src/audio/SDL_audio.c
author Sam Lantinga <slouken@libsdl.org>
Thu, 01 Jan 2009 21:34:22 +0000
changeset 2947 fec0db6c44b7
parent 2942 1e431c2631ee
child 2979 d578ae900755
permissions -rw-r--r--
Date: Thu, 01 Jan 2009 21:32:12 +0100 From: Couriersud Subject: Fusionsound audio driver attached is a diff containing a audio driver for the FusionSound library. This sound library is closely related to DirectFB and uses the same transport (fusion) as DirectFB when running applications "remote", i.e. over the network. As such, it natively redirects sound where DirectFB redirects video. This may be handy for everyone using SDL over DirectFB.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
     1
/*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
     2
    SDL - Simple DirectMedia Layer
2859
99210400e8b9 Updated copyright date
Sam Lantinga <slouken@libsdl.org>
parents: 2765
diff changeset
     3
    Copyright (C) 1997-2009 Sam Lantinga
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
     4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
     5
    This library is free software; you can redistribute it and/or
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1204
diff changeset
     6
    modify it under the terms of the GNU Lesser General Public
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
     7
    License as published by the Free Software Foundation; either
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1204
diff changeset
     8
    version 2.1 of the License, or (at your option) any later version.
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
     9
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    10
    This library is distributed in the hope that it will be useful,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    11
    but WITHOUT ANY WARRANTY; without even the implied warranty of
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    12
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1204
diff changeset
    13
    Lesser General Public License for more details.
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    14
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1204
diff changeset
    15
    You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1204
diff changeset
    16
    License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1204
diff changeset
    17
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    18
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    19
    Sam Lantinga
252
e8157fcb3114 Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents: 148
diff changeset
    20
    slouken@libsdl.org
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    21
*/
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
    22
#include "SDL_config.h"
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    23
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    24
/* Allow access to a raw mixing buffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    25
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    26
#include "SDL.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    27
#include "SDL_audio_c.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    28
#include "SDL_audiomem.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    29
#include "SDL_sysaudio.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    30
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    31
#define _THIS	SDL_AudioDevice *this
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    32
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    33
static SDL_AudioDriver current_audio;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    34
static SDL_AudioDevice *open_devices[16];
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    35
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    36
/* !!! FIXME: These are wordy and unlocalized... */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    37
#define DEFAULT_OUTPUT_DEVNAME "System audio output device"
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    38
#define DEFAULT_INPUT_DEVNAME "System audio capture device"
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    39
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    40
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    41
/*
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    42
 * Not all of these will be compiled and linked in, but it's convenient
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    43
 *  to have a complete list here and saves yet-another block of #ifdefs...
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    44
 *  Please see bootstrap[], below, for the actual #ifdef mess.
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    45
 */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    46
extern AudioBootStrap BSD_AUDIO_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    47
extern AudioBootStrap DSP_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    48
extern AudioBootStrap DMA_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    49
extern AudioBootStrap ALSA_bootstrap;
2271
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2147
diff changeset
    50
extern AudioBootStrap PULSEAUDIO_bootstrap;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    51
extern AudioBootStrap QNXNTOAUDIO_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    52
extern AudioBootStrap SUNAUDIO_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    53
extern AudioBootStrap DMEDIA_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    54
extern AudioBootStrap ARTS_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    55
extern AudioBootStrap ESD_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    56
extern AudioBootStrap NAS_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    57
extern AudioBootStrap DSOUND_bootstrap;
2070
dbfa1ebd73b0 Fixed building of Windows waveout audio.
Ryan C. Gordon <icculus@icculus.org>
parents: 2060
diff changeset
    58
extern AudioBootStrap WINWAVEOUT_bootstrap;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    59
extern AudioBootStrap PAUDIO_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    60
extern AudioBootStrap BEOSAUDIO_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    61
extern AudioBootStrap COREAUDIO_bootstrap;
2765
f55c87ae336b Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
    62
extern AudioBootStrap COREAUDIOIPHONE_bootstrap;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    63
extern AudioBootStrap SNDMGR_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    64
extern AudioBootStrap MINTAUDIO_GSXB_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    65
extern AudioBootStrap MINTAUDIO_MCSN_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    66
extern AudioBootStrap MINTAUDIO_STFA_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    67
extern AudioBootStrap MINTAUDIO_XBIOS_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    68
extern AudioBootStrap MINTAUDIO_DMA8_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    69
extern AudioBootStrap DISKAUD_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    70
extern AudioBootStrap DUMMYAUD_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    71
extern AudioBootStrap DCAUD_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    72
extern AudioBootStrap MMEAUDIO_bootstrap;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    73
extern AudioBootStrap DART_bootstrap;
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
    74
extern AudioBootStrap NDSAUD_bootstrap;
2947
fec0db6c44b7 Date: Thu, 01 Jan 2009 21:32:12 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2942
diff changeset
    75
extern AudioBootStrap FUSIONSOUND_bootstrap;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
    76
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
    77
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    78
/* Available audio drivers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    79
static AudioBootStrap *bootstrap[] = {
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents: 1562
diff changeset
    80
#if SDL_AUDIO_DRIVER_BSD
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
    81
    &BSD_AUDIO_bootstrap,
94
ae6e6b73333f Cleaned up the OpenBSD port, thanks to Peter Valchev
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
    82
#endif
2939
084e5b4fc5be Audio driver priority: favor PulseAudio and ALSA over OSS.
Ryan C. Gordon <icculus@icculus.org>
parents: 2938
diff changeset
    83
#if SDL_AUDIO_DRIVER_PULSEAUDIO
084e5b4fc5be Audio driver priority: favor PulseAudio and ALSA over OSS.
Ryan C. Gordon <icculus@icculus.org>
parents: 2938
diff changeset
    84
    &PULSEAUDIO_bootstrap,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    85
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    86
#if SDL_AUDIO_DRIVER_ALSA
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
    87
    &ALSA_bootstrap,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    88
#endif
2939
084e5b4fc5be Audio driver priority: favor PulseAudio and ALSA over OSS.
Ryan C. Gordon <icculus@icculus.org>
parents: 2938
diff changeset
    89
#if SDL_AUDIO_DRIVER_OSS
084e5b4fc5be Audio driver priority: favor PulseAudio and ALSA over OSS.
Ryan C. Gordon <icculus@icculus.org>
parents: 2938
diff changeset
    90
    &DSP_bootstrap,
084e5b4fc5be Audio driver priority: favor PulseAudio and ALSA over OSS.
Ryan C. Gordon <icculus@icculus.org>
parents: 2938
diff changeset
    91
    &DMA_bootstrap,
2271
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2147
diff changeset
    92
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    93
#if SDL_AUDIO_DRIVER_QNXNTO
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
    94
    &QNXNTOAUDIO_bootstrap,
663
8bedd6d61642 Date: Sat, 2 Aug 2003 16:22:51 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 654
diff changeset
    95
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    96
#if SDL_AUDIO_DRIVER_SUNAUDIO
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
    97
    &SUNAUDIO_bootstrap,
148
8758b8d42cd9 Audio subsystem no longer assumes sun audio API on UNIX systems
Sam Lantinga <slouken@libsdl.org>
parents: 121
diff changeset
    98
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    99
#if SDL_AUDIO_DRIVER_DMEDIA
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   100
    &DMEDIA_bootstrap,
35
d3bc792e136d Added detection of Open Sound System on Solaris x86
Sam Lantinga <slouken@lokigames.com>
parents: 21
diff changeset
   101
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   102
#if SDL_AUDIO_DRIVER_ARTS
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   103
    &ARTS_bootstrap,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   104
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   105
#if SDL_AUDIO_DRIVER_ESD
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   106
    &ESD_bootstrap,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   107
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   108
#if SDL_AUDIO_DRIVER_NAS
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   109
    &NAS_bootstrap,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   110
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   111
#if SDL_AUDIO_DRIVER_DSOUND
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   112
    &DSOUND_bootstrap,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   113
#endif
2070
dbfa1ebd73b0 Fixed building of Windows waveout audio.
Ryan C. Gordon <icculus@icculus.org>
parents: 2060
diff changeset
   114
#if SDL_AUDIO_DRIVER_WINWAVEOUT
dbfa1ebd73b0 Fixed building of Windows waveout audio.
Ryan C. Gordon <icculus@icculus.org>
parents: 2060
diff changeset
   115
    &WINWAVEOUT_bootstrap,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   116
#endif
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   117
#if SDL_AUDIO_DRIVER_PAUDIO
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   118
    &PAUDIO_bootstrap,
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   119
#endif
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   120
#if SDL_AUDIO_DRIVER_BEOSAUDIO
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   121
    &BEOSAUDIO_bootstrap,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   122
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   123
#if SDL_AUDIO_DRIVER_COREAUDIO
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   124
    &COREAUDIO_bootstrap,
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents: 808
diff changeset
   125
#endif
2765
f55c87ae336b Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
   126
#if SDL_AUDIO_DRIVER_COREAUDIOIPHONE
f55c87ae336b Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
   127
    &COREAUDIOIPHONE_bootstrap,
f55c87ae336b Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
   128
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   129
#if SDL_AUDIO_DRIVER_SNDMGR
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   130
    &SNDMGR_bootstrap,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   131
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   132
#if SDL_AUDIO_DRIVER_MINT
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   133
    &MINTAUDIO_GSXB_bootstrap,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   134
    &MINTAUDIO_MCSN_bootstrap,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   135
    &MINTAUDIO_STFA_bootstrap,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   136
    &MINTAUDIO_XBIOS_bootstrap,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   137
    &MINTAUDIO_DMA8_bootstrap,
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
   138
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   139
#if SDL_AUDIO_DRIVER_DISK
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   140
    &DISKAUD_bootstrap,
68
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 38
diff changeset
   141
#endif
1532
30f189cdd82b Implemented dummy audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 1487
diff changeset
   142
#if SDL_AUDIO_DRIVER_DUMMY
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   143
    &DUMMYAUD_bootstrap,
1532
30f189cdd82b Implemented dummy audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 1487
diff changeset
   144
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   145
#if SDL_AUDIO_DRIVER_DC
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   146
    &DCAUD_bootstrap,
509
dad72daf44b3 Added initial support for Dreamcast (thanks HERO!)
Sam Lantinga <slouken@libsdl.org>
parents: 398
diff changeset
   147
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   148
#if SDL_AUDIO_DRIVER_MMEAUDIO
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   149
    &MMEAUDIO_bootstrap,
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   150
#endif
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   151
#if SDL_AUDIO_DRIVER_DART
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   152
    &DART_bootstrap,
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   153
#endif
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
   154
#if SDL_AUDIO_DRIVER_NDS
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
   155
    &NDSAUD_bootstrap,
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
   156
#endif
2947
fec0db6c44b7 Date: Thu, 01 Jan 2009 21:32:12 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2942
diff changeset
   157
#if SDL_AUDIO_DRIVER_FUSIONSOUND
fec0db6c44b7 Date: Thu, 01 Jan 2009 21:32:12 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2942
diff changeset
   158
    &FUSIONSOUND_bootstrap,
fec0db6c44b7 Date: Thu, 01 Jan 2009 21:32:12 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2942
diff changeset
   159
#endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   160
    NULL
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   161
};
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   162
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   163
static SDL_AudioDevice *
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   164
get_audio_device(SDL_AudioDeviceID id)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   165
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   166
    id--;
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   167
    if ((id >= SDL_arraysize(open_devices)) || (open_devices[id] == NULL)) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   168
        SDL_SetError("Invalid audio device ID");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   169
        return NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   170
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   171
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   172
    return open_devices[id];
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   173
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   174
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   175
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   176
/* stubs for audio drivers that don't need a specific entry point... */
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   177
static int
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   178
SDL_AudioDetectDevices_Default(int iscapture)
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   179
{
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   180
    return -1;
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   181
}
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
   182
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   183
static void
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   184
SDL_AudioThreadInit_Default(_THIS)
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   185
{                               /* no-op. */
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   186
}
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
   187
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   188
static void
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   189
SDL_AudioWaitDevice_Default(_THIS)
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   190
{                               /* no-op. */
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   191
}
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
   192
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   193
static void
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   194
SDL_AudioPlayDevice_Default(_THIS)
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   195
{                               /* no-op. */
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   196
}
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
   197
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   198
static Uint8 *
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   199
SDL_AudioGetDeviceBuf_Default(_THIS)
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   200
{
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   201
    return NULL;
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   202
}
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
   203
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   204
static void
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   205
SDL_AudioWaitDone_Default(_THIS)
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   206
{                               /* no-op. */
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   207
}
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
   208
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   209
static void
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   210
SDL_AudioCloseDevice_Default(_THIS)
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   211
{                               /* no-op. */
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   212
}
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2728
diff changeset
   213
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   214
static void
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   215
SDL_AudioDeinitialize_Default(void)
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   216
{                               /* no-op. */
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   217
}
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   218
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   219
static int
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   220
SDL_AudioOpenDevice_Default(_THIS, const char *devname, int iscapture)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   221
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   222
    return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   223
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   224
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   225
static const char *
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   226
SDL_AudioGetDeviceName_Default(int index, int iscapture)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   227
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   228
    SDL_SetError("No such device");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   229
    return NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   230
}
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   231
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   232
static void
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   233
SDL_AudioLockDevice_Default(SDL_AudioDevice * device)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   234
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   235
    if (device->thread && (SDL_ThreadID() == device->threadid)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   236
        return;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   237
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   238
    SDL_mutexP(device->mixer_lock);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   239
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   240
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   241
static void
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   242
SDL_AudioUnlockDevice_Default(SDL_AudioDevice * device)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   243
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   244
    if (device->thread && (SDL_ThreadID() == device->threadid)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   245
        return;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   246
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   247
    SDL_mutexV(device->mixer_lock);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   248
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   249
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   250
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   251
static void
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   252
finalize_audio_entry_points(void)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   253
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   254
    /*
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   255
     * Fill in stub functions for unused driver entry points. This lets us
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   256
     *  blindly call them without having to check for validity first.
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   257
     */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   258
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   259
#define FILL_STUB(x) \
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   260
        if (current_audio.impl.x == NULL) { \
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   261
            current_audio.impl.x = SDL_Audio##x##_Default; \
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   262
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   263
    FILL_STUB(DetectDevices);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   264
    FILL_STUB(GetDeviceName);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   265
    FILL_STUB(OpenDevice);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   266
    FILL_STUB(ThreadInit);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   267
    FILL_STUB(WaitDevice);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   268
    FILL_STUB(PlayDevice);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   269
    FILL_STUB(GetDeviceBuf);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   270
    FILL_STUB(WaitDone);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   271
    FILL_STUB(CloseDevice);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   272
    FILL_STUB(LockDevice);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   273
    FILL_STUB(UnlockDevice);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   274
    FILL_STUB(Deinitialize);
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   275
#undef FILL_STUB
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   276
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   277
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   278
/* Streaming functions (for when the input and output buffer sizes are different) */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   279
/* Write [length] bytes from buf into the streamer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   280
void
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   281
SDL_StreamWrite(SDL_AudioStreamer * stream, Uint8 * buf, int length)
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   282
{
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   283
    int i;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   284
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   285
    for (i = 0; i < length; ++i) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   286
        stream->buffer[stream->write_pos] = buf[i];
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   287
        ++stream->write_pos;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   288
    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   289
}
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   290
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   291
/* Read [length] bytes out of the streamer into buf */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   292
void
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   293
SDL_StreamRead(SDL_AudioStreamer * stream, Uint8 * buf, int length)
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   294
{
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   295
    int i;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   296
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   297
    for (i = 0; i < length; ++i) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   298
        buf[i] = stream->buffer[stream->read_pos];
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   299
        ++stream->read_pos;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   300
    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   301
}
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   302
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   303
int
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   304
SDL_StreamLength(SDL_AudioStreamer * stream)
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   305
{
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   306
    return (stream->write_pos - stream->read_pos) % stream->max_len;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   307
}
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   308
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   309
/* Initialize the stream by allocating the buffer and setting the read/write heads to the beginning */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   310
int
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   311
SDL_StreamInit(SDL_AudioStreamer * stream, int max_len, Uint8 silence)
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   312
{
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   313
    /* First try to allocate the buffer */
2728
2768bd7281e0 Fixed Visual Studio compilation problems
Sam Lantinga <slouken@libsdl.org>
parents: 2716
diff changeset
   314
    stream->buffer = (Uint8 *) SDL_malloc(max_len);
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   315
    if (stream->buffer == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   316
        return -1;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   317
    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   318
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   319
    stream->max_len = max_len;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   320
    stream->read_pos = 0;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   321
    stream->write_pos = 0;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   322
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   323
    /* Zero out the buffer */
2728
2768bd7281e0 Fixed Visual Studio compilation problems
Sam Lantinga <slouken@libsdl.org>
parents: 2716
diff changeset
   324
    SDL_memset(stream->buffer, silence, max_len);
2768bd7281e0 Fixed Visual Studio compilation problems
Sam Lantinga <slouken@libsdl.org>
parents: 2716
diff changeset
   325
2768bd7281e0 Fixed Visual Studio compilation problems
Sam Lantinga <slouken@libsdl.org>
parents: 2716
diff changeset
   326
    return 0;
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   327
}
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   328
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   329
/* Deinitialize the stream simply by freeing the buffer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   330
void
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   331
SDL_StreamDeinit(SDL_AudioStreamer * stream)
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   332
{
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   333
    if (stream->buffer != NULL) {
2728
2768bd7281e0 Fixed Visual Studio compilation problems
Sam Lantinga <slouken@libsdl.org>
parents: 2716
diff changeset
   334
        SDL_free(stream->buffer);
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   335
    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   336
}
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   337
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   338
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   339
/* The general mixing thread function */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   340
int SDLCALL
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   341
SDL_RunAudio(void *devicep)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   342
{
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   343
    SDL_AudioDevice *device = (SDL_AudioDevice *) devicep;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   344
    Uint8 *stream;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   345
    int stream_len;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   346
    void *udata;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   347
    void (SDLCALL * fill) (void *userdata, Uint8 * stream, int len);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   348
    int silence;
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   349
    int stream_max_len;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   350
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   351
    /* For streaming when the buffer sizes don't match up */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   352
    Uint8 *istream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   353
    int istream_len;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   354
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   355
    /* Perform any thread setup */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   356
    device->threadid = SDL_ThreadID();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   357
    current_audio.impl.ThreadInit(device);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   358
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   359
    /* Set up the mixing function */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   360
    fill = device->spec.callback;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   361
    udata = device->spec.userdata;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   362
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   363
    /* By default do not stream */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   364
    device->use_streamer = 0;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   365
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   366
    if (device->convert.needed) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   367
        if (device->convert.src_format == AUDIO_U8) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   368
            silence = 0x80;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   369
        } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   370
            silence = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   371
        }
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   372
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   373
        /* If the result of the conversion alters the length, i.e. resampling is being used, use the streamer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   374
        if (device->convert.len_mult != 1 || device->convert.len_div != 1) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   375
            /* The streamer's maximum length should be twice whichever is larger: spec.size or len_cvt */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   376
            stream_max_len = 2 * device->spec.size;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   377
            if (device->convert.len_mult > device->convert.len_div) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   378
                stream_max_len *= device->convert.len_mult;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   379
                stream_max_len /= device->convert.len_div;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   380
            }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   381
            if (SDL_StreamInit(&device->streamer, stream_max_len, silence) <
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   382
                0)
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   383
                return -1;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   384
            device->use_streamer = 1;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   385
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   386
            /* istream_len should be the length of what we grab from the callback and feed to conversion,
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   387
               so that we get close to spec_size. I.e. we want device.spec_size = istream_len * u / d
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   388
             */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   389
            istream_len =
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   390
                device->spec.size * device->convert.len_div /
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   391
                device->convert.len_mult;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   392
        }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   393
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   394
        /* stream_len = device->convert.len; */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   395
        stream_len = device->spec.size;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   396
    } else {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   397
        silence = device->spec.silence;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   398
        stream_len = device->spec.size;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   399
    }
1561
c724c4a99759 Try to fill the hardware audio buffer immediately.
Ryan C. Gordon <icculus@icculus.org>
parents: 1532
diff changeset
   400
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   401
    /* Determine if the streamer is necessary here */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   402
    if (device->use_streamer == 1) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   403
        /* This code is almost the same as the old code. The difference is, instead of reding
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   404
           directly from the callback into "stream", then converting and sending the audio off,
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   405
           we go: callback -> "istream" -> (conversion) -> streamer -> stream -> device.
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   406
           However, reading and writing with streamer are done separately:
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   407
           - We only call the callback and write to the streamer when the streamer does not
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   408
           contain enough samples to output to the device.
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   409
           - We only read from the streamer and tell the device to play when the streamer
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   410
           does have enough samples to output.
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   411
           This allows us to perform resampling in the conversion step, where the output of the
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   412
           resampling process can be any number. We will have to see what a good size for the
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   413
           stream's maximum length is, but I suspect 2*max(len_cvt, stream_len) is a good figure.
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   414
         */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   415
        while (device->enabled) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   416
            /* Only read in audio if the streamer doesn't have enough already (if it does not have enough samples to output) */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   417
            if (SDL_StreamLength(&device->streamer) < stream_len) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   418
                /* Set up istream */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   419
                if (device->convert.needed) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   420
                    if (device->convert.buf) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   421
                        istream = device->convert.buf;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   422
                    } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   423
                        continue;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   424
                    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   425
                } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   426
                    istream = current_audio.impl.GetDeviceBuf(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   427
                    if (istream == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   428
                        istream = device->fake_stream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   429
                    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   430
                }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   431
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   432
                /* Read from the callback into the _input_ stream */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   433
                if (!device->paused) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   434
                    SDL_mutexP(device->mixer_lock);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   435
                    (*fill) (udata, istream, istream_len);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   436
                    SDL_mutexV(device->mixer_lock);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   437
                }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   438
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   439
                /* Convert the audio if necessary and write to the streamer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   440
                if (device->convert.needed) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   441
                    SDL_ConvertAudio(&device->convert);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   442
                    if (istream == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   443
                        istream = device->fake_stream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   444
                    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   445
                    /*SDL_memcpy(istream, device->convert.buf, device->convert.len_cvt); */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   446
                    SDL_StreamWrite(&device->streamer, device->convert.buf,
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   447
                                    device->convert.len_cvt);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   448
                } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   449
                    SDL_StreamWrite(&device->streamer, istream, istream_len);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   450
                }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   451
            }
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   452
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   453
            /* Only output audio if the streamer has enough to output */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   454
            if (SDL_StreamLength(&device->streamer) >= stream_len) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   455
                /* Set up the output stream */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   456
                if (device->convert.needed) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   457
                    if (device->convert.buf) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   458
                        stream = device->convert.buf;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   459
                    } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   460
                        continue;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   461
                    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   462
                } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   463
                    stream = current_audio.impl.GetDeviceBuf(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   464
                    if (stream == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   465
                        stream = device->fake_stream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   466
                    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   467
                }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   468
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   469
                /* Now read from the streamer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   470
                SDL_StreamRead(&device->streamer, stream, stream_len);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   471
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   472
                /* Ready current buffer for play and change current buffer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   473
                if (stream != device->fake_stream) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   474
                    current_audio.impl.PlayDevice(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   475
                }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   476
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   477
                /* Wait for an audio buffer to become available */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   478
                if (stream == device->fake_stream) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   479
                    SDL_Delay((device->spec.samples * 1000) /
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   480
                              device->spec.freq);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   481
                } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   482
                    current_audio.impl.WaitDevice(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   483
                }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   484
            }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   485
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   486
        }
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   487
    } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   488
        /* Otherwise, do not use the streamer. This is the old code. */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   489
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   490
        /* Loop, filling the audio buffers */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   491
        while (device->enabled) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   492
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   493
            /* Fill the current buffer with sound */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   494
            if (device->convert.needed) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   495
                if (device->convert.buf) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   496
                    stream = device->convert.buf;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   497
                } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   498
                    continue;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   499
                }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   500
            } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   501
                stream = current_audio.impl.GetDeviceBuf(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   502
                if (stream == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   503
                    stream = device->fake_stream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   504
                }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   505
            }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   506
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   507
            if (!device->paused) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   508
                SDL_mutexP(device->mixer_lock);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   509
                (*fill) (udata, stream, stream_len);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   510
                SDL_mutexV(device->mixer_lock);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   511
            }
1562
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   512
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   513
            /* Convert the audio if necessary */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   514
            if (device->convert.needed) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   515
                SDL_ConvertAudio(&device->convert);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   516
                stream = current_audio.impl.GetDeviceBuf(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   517
                if (stream == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   518
                    stream = device->fake_stream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   519
                }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   520
                SDL_memcpy(stream, device->convert.buf,
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   521
                           device->convert.len_cvt);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   522
            }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   523
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   524
            /* Ready current buffer for play and change current buffer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   525
            if (stream != device->fake_stream) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   526
                current_audio.impl.PlayDevice(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   527
            }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   528
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   529
            /* Wait for an audio buffer to become available */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   530
            if (stream == device->fake_stream) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   531
                SDL_Delay((device->spec.samples * 1000) / device->spec.freq);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   532
            } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   533
                current_audio.impl.WaitDevice(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   534
            }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   535
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   536
    }
1562
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   537
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   538
    /* Wait for the audio to drain.. */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   539
    current_audio.impl.WaitDone(device);
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   540
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   541
    /* If necessary, deinit the streamer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   542
    if (device->use_streamer == 1)
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   543
        SDL_StreamDeinit(&device->streamer);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   544
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   545
    return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   546
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   547
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   548
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
   549
static SDL_AudioFormat
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   550
SDL_ParseAudioFormat(const char *string)
1794
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   551
{
2076
939420dee849 Use SDL_strcmp(), not strcmp().
Ryan C. Gordon <icculus@icculus.org>
parents: 2070
diff changeset
   552
#define CHECK_FMT_STRING(x) if (SDL_strcmp(string, #x) == 0) return AUDIO_##x
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   553
    CHECK_FMT_STRING(U8);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   554
    CHECK_FMT_STRING(S8);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   555
    CHECK_FMT_STRING(U16LSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   556
    CHECK_FMT_STRING(S16LSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   557
    CHECK_FMT_STRING(U16MSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   558
    CHECK_FMT_STRING(S16MSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   559
    CHECK_FMT_STRING(U16SYS);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   560
    CHECK_FMT_STRING(S16SYS);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   561
    CHECK_FMT_STRING(U16);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   562
    CHECK_FMT_STRING(S16);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   563
    CHECK_FMT_STRING(S32LSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   564
    CHECK_FMT_STRING(S32MSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   565
    CHECK_FMT_STRING(S32SYS);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   566
    CHECK_FMT_STRING(S32);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   567
    CHECK_FMT_STRING(F32LSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   568
    CHECK_FMT_STRING(F32MSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   569
    CHECK_FMT_STRING(F32SYS);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   570
    CHECK_FMT_STRING(F32);
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   571
#undef CHECK_FMT_STRING
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   572
    return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   573
}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   574
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   575
int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   576
SDL_GetNumAudioDrivers(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   577
{
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   578
    return (SDL_arraysize(bootstrap) - 1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   579
}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   580
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   581
const char *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   582
SDL_GetAudioDriver(int index)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   583
{
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   584
    if (index >= 0 && index < SDL_GetNumAudioDrivers()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   585
        return (bootstrap[index]->name);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   586
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   587
    return (NULL);
1794
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   588
}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   589
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   590
int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   591
SDL_AudioInit(const char *driver_name)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   592
{
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   593
    int i = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   594
    int initialized = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   595
    int tried_to_init = 0;
2938
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   596
    int rc = 0;
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   597
    int best_choice = -1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   598
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   599
    if (SDL_WasInit(SDL_INIT_AUDIO)) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   600
        SDL_AudioQuit();        /* shutdown driver if already running. */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   601
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   602
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   603
    SDL_memset(&current_audio, '\0', sizeof(current_audio));
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   604
    SDL_memset(open_devices, '\0', sizeof(open_devices));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   605
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   606
    /* Select the proper audio driver */
1909
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
Sam Lantinga <slouken@libsdl.org>
parents: 1903
diff changeset
   607
    if (driver_name == NULL) {
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
Sam Lantinga <slouken@libsdl.org>
parents: 1903
diff changeset
   608
        driver_name = SDL_getenv("SDL_AUDIODRIVER");
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
Sam Lantinga <slouken@libsdl.org>
parents: 1903
diff changeset
   609
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   610
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   611
    for (i = 0; (!initialized) && (bootstrap[i]); ++i) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   612
        /* make sure we should even try this driver before doing so... */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   613
        const AudioBootStrap *backend = bootstrap[i];
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   614
        if (((driver_name) && (SDL_strcasecmp(backend->name, driver_name))) ||
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   615
            ((!driver_name) && (backend->demand_only))) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   616
            continue;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   617
        }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   618
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   619
        tried_to_init = 1;
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   620
        SDL_memset(&current_audio, 0, sizeof(current_audio));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   621
        current_audio.name = backend->name;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   622
        current_audio.desc = backend->desc;
2938
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   623
        rc = backend->init(&current_audio.impl);
2942
Sam Lantinga <slouken@libsdl.org>
parents: 2939
diff changeset
   624
        if (rc == 2) {          /* init'd, and devices available. Take it! */
2938
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   625
            initialized = 1;
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   626
            best_choice = i;
2942
Sam Lantinga <slouken@libsdl.org>
parents: 2939
diff changeset
   627
        } else if (rc == 1) {   /* init'd, but can't see any devices. */
2938
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   628
            current_audio.impl.Deinitialize();
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   629
            if (best_choice == -1) {
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   630
                best_choice = i;
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   631
            }
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   632
        }
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   633
    }
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   634
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   635
    /* No definite choice. Pick one that works but can't promise a device. */
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   636
    if ((!initialized) && (best_choice != -1)) {
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   637
        const AudioBootStrap *backend = bootstrap[best_choice];
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   638
        SDL_memset(&current_audio, 0, sizeof(current_audio));
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   639
        current_audio.name = backend->name;
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   640
        current_audio.desc = backend->desc;
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2866
diff changeset
   641
        initialized = (backend->init(&current_audio.impl) > 0);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   642
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   643
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   644
    if (!initialized) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   645
        /* specific drivers will set the error message if they fail... */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   646
        if (!tried_to_init) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   647
            if (driver_name) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   648
                SDL_SetError("%s not available", driver_name);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   649
            } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   650
                SDL_SetError("No available audio device");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   651
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   652
        }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   653
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   654
        SDL_memset(&current_audio, 0, sizeof(current_audio));
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   655
        return (-1);            /* No driver was available, so fail. */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   656
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   657
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   658
    finalize_audio_entry_points();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   659
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   660
    return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   661
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   662
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   663
/*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   664
 * Get the current audio driver name
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   665
 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   666
const char *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   667
SDL_GetCurrentAudioDriver()
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   668
{
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   669
    return current_audio.name;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   670
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   671
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   672
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   673
int
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   674
SDL_GetNumAudioDevices(int iscapture)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   675
{
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   676
    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   677
        return -1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   678
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   679
    if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   680
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   681
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   682
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   683
    if ((iscapture) && (current_audio.impl.OnlyHasDefaultInputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   684
        return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   685
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   686
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   687
    if ((!iscapture) && (current_audio.impl.OnlyHasDefaultOutputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   688
        return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   689
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   690
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   691
    return current_audio.impl.DetectDevices(iscapture);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   692
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   693
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   694
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   695
const char *
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   696
SDL_GetAudioDeviceName(int index, int iscapture)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   697
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   698
    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   699
        SDL_SetError("Audio subsystem is not initialized");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   700
        return NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   701
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   702
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   703
    if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   704
        SDL_SetError("No capture support");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   705
        return NULL;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   706
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   707
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   708
    if (index < 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   709
        SDL_SetError("No such device");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   710
        return NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   711
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   712
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   713
    if ((iscapture) && (current_audio.impl.OnlyHasDefaultInputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   714
        return DEFAULT_INPUT_DEVNAME;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   715
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   716
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   717
    if ((!iscapture) && (current_audio.impl.OnlyHasDefaultOutputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   718
        return DEFAULT_OUTPUT_DEVNAME;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   719
    }
262
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
   720
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   721
    return current_audio.impl.GetDeviceName(index, iscapture);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   722
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   723
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   724
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   725
static void
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   726
close_audio_device(SDL_AudioDevice * device)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   727
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   728
    device->enabled = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   729
    if (device->thread != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   730
        SDL_WaitThread(device->thread, NULL);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   731
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   732
    if (device->mixer_lock != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   733
        SDL_DestroyMutex(device->mixer_lock);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   734
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   735
    if (device->fake_stream != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   736
        SDL_FreeAudioMem(device->fake_stream);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   737
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   738
    if (device->convert.needed) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   739
        SDL_FreeAudioMem(device->convert.buf);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   740
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   741
    if (device->opened) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   742
        current_audio.impl.CloseDevice(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   743
        device->opened = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   744
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   745
    SDL_FreeAudioMem(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   746
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   747
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   748
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   749
/*
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   750
 * Sanity check desired AudioSpec for SDL_OpenAudio() in (orig).
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   751
 *  Fills in a sanitized copy in (prepared).
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   752
 *  Returns non-zero if okay, zero on fatal parameters in (orig).
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   753
 */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   754
static int
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   755
prepare_audiospec(const SDL_AudioSpec * orig, SDL_AudioSpec * prepared)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   756
{
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   757
    SDL_memcpy(prepared, orig, sizeof(SDL_AudioSpec));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   758
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   759
    if (orig->callback == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   760
        SDL_SetError("SDL_OpenAudio() passed a NULL callback");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   761
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   762
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   763
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   764
    if (orig->freq == 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   765
        const char *env = SDL_getenv("SDL_AUDIO_FREQUENCY");
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   766
        if ((!env) || ((prepared->freq = SDL_atoi(env)) == 0)) {
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   767
            prepared->freq = 22050;     /* a reasonable default */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   768
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   769
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   770
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   771
    if (orig->format == 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   772
        const char *env = SDL_getenv("SDL_AUDIO_FORMAT");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   773
        if ((!env) || ((prepared->format = SDL_ParseAudioFormat(env)) == 0)) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   774
            prepared->format = AUDIO_S16;       /* a reasonable default */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   775
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   776
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   777
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   778
    switch (orig->channels) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   779
    case 0:{
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   780
            const char *env = SDL_getenv("SDL_AUDIO_CHANNELS");
2141
e1a70460c354 stupid indent
Sam Lantinga <slouken@libsdl.org>
parents: 2130
diff changeset
   781
            if ((!env) || ((prepared->channels = (Uint8) SDL_atoi(env)) == 0)) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   782
                prepared->channels = 2; /* a reasonable default */
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   783
            }
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   784
            break;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   785
        }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   786
    case 1:                    /* Mono */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   787
    case 2:                    /* Stereo */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   788
    case 4:                    /* surround */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   789
    case 6:                    /* surround with center and lfe */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   790
        break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   791
    default:
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   792
        SDL_SetError("Unsupported number of audio channels.");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   793
        return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   794
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   795
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   796
    if (orig->samples == 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   797
        const char *env = SDL_getenv("SDL_AUDIO_SAMPLES");
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   798
        if ((!env) || ((prepared->samples = (Uint16) SDL_atoi(env)) == 0)) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   799
            /* Pick a default of ~46 ms at desired frequency */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   800
            /* !!! FIXME: remove this when the non-Po2 resampling is in. */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   801
            const int samples = (prepared->freq / 1000) * 46;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   802
            int power2 = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   803
            while (power2 < samples) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   804
                power2 *= 2;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   805
            }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   806
            prepared->samples = power2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   807
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   808
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   809
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   810
    /* Calculate the silence and size of the audio specification */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   811
    SDL_CalculateAudioSpec(prepared);
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   812
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   813
    return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   814
}
1408
ceb5c2fec4f1 Fixed some preprocessor mangling
Sam Lantinga <slouken@libsdl.org>
parents: 1406
diff changeset
   815
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   816
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   817
static SDL_AudioDeviceID
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   818
open_audio_device(const char *devname, int iscapture,
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   819
                  const SDL_AudioSpec * desired, SDL_AudioSpec * obtained,
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   820
                  int allowed_changes, int min_id)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   821
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   822
    SDL_AudioDeviceID id = 0;
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   823
    SDL_AudioSpec _obtained;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   824
    SDL_AudioDevice *device;
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   825
    SDL_bool build_cvt;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   826
    int i = 0;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   827
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   828
    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   829
        SDL_SetError("Audio subsystem is not initialized");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   830
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   831
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   832
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   833
    if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   834
        SDL_SetError("No capture support");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   835
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   836
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   837
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   838
    if (!obtained) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   839
        obtained = &_obtained;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   840
    }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   841
    if (!prepare_audiospec(desired, obtained)) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   842
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   843
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   844
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   845
    /* If app doesn't care about a specific device, let the user override. */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   846
    if (devname == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   847
        devname = SDL_getenv("SDL_AUDIO_DEVICE_NAME");
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   848
    }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   849
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   850
    /*
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   851
     * Catch device names at the high level for the simple case...
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   852
     * This lets us have a basic "device enumeration" for systems that
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   853
     *  don't have multiple devices, but makes sure the device name is
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   854
     *  always NULL when it hits the low level.
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   855
     *
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   856
     * Also make sure that the simple case prevents multiple simultaneous
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   857
     *  opens of the default system device.
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   858
     */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   859
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   860
    if ((iscapture) && (current_audio.impl.OnlyHasDefaultInputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   861
        if ((devname) && (SDL_strcmp(devname, DEFAULT_INPUT_DEVNAME) != 0)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   862
            SDL_SetError("No such device");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   863
            return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   864
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   865
        devname = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   866
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   867
        for (i = 0; i < SDL_arraysize(open_devices); i++) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   868
            if ((open_devices[i]) && (open_devices[i]->iscapture)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   869
                SDL_SetError("Audio device already open");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   870
                return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   871
            }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   872
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   873
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   874
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   875
    if ((!iscapture) && (current_audio.impl.OnlyHasDefaultOutputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   876
        if ((devname) && (SDL_strcmp(devname, DEFAULT_OUTPUT_DEVNAME) != 0)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   877
            SDL_SetError("No such device");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   878
            return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   879
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   880
        devname = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   881
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   882
        for (i = 0; i < SDL_arraysize(open_devices); i++) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   883
            if ((open_devices[i]) && (!open_devices[i]->iscapture)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   884
                SDL_SetError("Audio device already open");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   885
                return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   886
            }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   887
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   888
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   889
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   890
    device = (SDL_AudioDevice *) SDL_AllocAudioMem(sizeof(SDL_AudioDevice));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   891
    if (device == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   892
        SDL_OutOfMemory();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   893
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   894
    }
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   895
    SDL_memset(device, '\0', sizeof(SDL_AudioDevice));
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   896
    device->spec = *obtained;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   897
    device->enabled = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   898
    device->paused = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   899
    device->iscapture = iscapture;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   900
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   901
    /* Create a semaphore for locking the sound buffers */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   902
    if (!current_audio.impl.SkipMixerLock) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   903
        device->mixer_lock = SDL_CreateMutex();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   904
        if (device->mixer_lock == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   905
            close_audio_device(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   906
            SDL_SetError("Couldn't create mixer lock");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   907
            return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   908
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   909
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   910
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   911
    if (!current_audio.impl.OpenDevice(device, devname, iscapture)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   912
        close_audio_device(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   913
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   914
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   915
    device->opened = 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   916
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   917
    /* Allocate a fake audio memory buffer */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   918
    device->fake_stream = SDL_AllocAudioMem(device->spec.size);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   919
    if (device->fake_stream == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   920
        close_audio_device(device);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   921
        SDL_OutOfMemory();
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   922
        return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   923
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   924
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   925
    /* If the audio driver changes the buffer size, accept it */
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   926
    if (device->spec.samples != obtained->samples) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   927
        obtained->samples = device->spec.samples;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   928
        SDL_CalculateAudioSpec(obtained);
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   929
    }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   930
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   931
    /* See if we need to do any conversion */
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   932
    build_cvt = SDL_FALSE;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   933
    if (obtained->freq != device->spec.freq) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   934
        if (allowed_changes & SDL_AUDIO_ALLOW_FREQUENCY_CHANGE) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   935
            obtained->freq = device->spec.freq;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   936
        } else {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   937
            build_cvt = SDL_TRUE;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   938
        }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   939
    }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   940
    if (obtained->format != device->spec.format) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   941
        if (allowed_changes & SDL_AUDIO_ALLOW_FORMAT_CHANGE) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   942
            obtained->format = device->spec.format;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   943
        } else {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   944
            build_cvt = SDL_TRUE;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   945
        }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   946
    }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   947
    if (obtained->channels != device->spec.channels) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   948
        if (allowed_changes & SDL_AUDIO_ALLOW_CHANNELS_CHANGE) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   949
            obtained->channels = device->spec.channels;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   950
        } else {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   951
            build_cvt = SDL_TRUE;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   952
        }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   953
    }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   954
    if (build_cvt) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   955
        /* Build an audio conversion block */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   956
        if (SDL_BuildAudioCVT(&device->convert,
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   957
                              obtained->format, obtained->channels,
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   958
                              obtained->freq,
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   959
                              device->spec.format, device->spec.channels,
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   960
                              device->spec.freq) < 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   961
            close_audio_device(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   962
            return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   963
        }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   964
        if (device->convert.needed) {
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   965
            device->convert.len = (int) (((double) obtained->size) /
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   966
                                         device->convert.len_ratio);
2053
716cf90f24a0 1.3 branch version of revision 2878.
Ryan C. Gordon <icculus@icculus.org>
parents: 2049
diff changeset
   967
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   968
            device->convert.buf =
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   969
                (Uint8 *) SDL_AllocAudioMem(device->convert.len *
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   970
                                            device->convert.len_mult);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   971
            if (device->convert.buf == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   972
                close_audio_device(device);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   973
                SDL_OutOfMemory();
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   974
                return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   975
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   976
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   977
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   978
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   979
    /* Find an available device ID and store the structure... */
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   980
    for (id = min_id - 1; id < SDL_arraysize(open_devices); id++) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   981
        if (open_devices[id] == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   982
            open_devices[id] = device;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   983
            break;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   984
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   985
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   986
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   987
    if (id == SDL_arraysize(open_devices)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   988
        SDL_SetError("Too many open audio devices");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   989
        close_audio_device(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   990
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   991
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   992
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   993
    /* Start the audio thread if necessary */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   994
    if (!current_audio.impl.ProvidesOwnCallbackThread) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   995
        /* Start the audio thread */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   996
/* !!! FIXME: this is nasty. */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
   997
#if (defined(__WIN32__) && !defined(_WIN32_WCE)) && !defined(HAVE_LIBC)
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
   998
#undef SDL_CreateThread
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   999
        device->thread = SDL_CreateThread(SDL_RunAudio, device, NULL, NULL);
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
  1000
#else
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1001
        device->thread = SDL_CreateThread(SDL_RunAudio, device);
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
  1002
#endif
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1003
        if (device->thread == NULL) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
  1004
            SDL_CloseAudioDevice(id + 1);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1005
            SDL_SetError("Couldn't create audio thread");
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1006
            return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1007
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1008
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1009
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
  1010
    return id + 1;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1011
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1012
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1013
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1014
int
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1015
SDL_OpenAudio(SDL_AudioSpec * desired, SDL_AudioSpec * obtained)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1016
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1017
    SDL_AudioDeviceID id = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1018
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1019
    /* Start up the audio driver, if necessary. This is legacy behaviour! */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1020
    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1021
        if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1022
            return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1023
        }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1024
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
  1025
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1026
    /* SDL_OpenAudio() is legacy and can only act on Device ID #1. */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1027
    if (open_devices[0] != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1028
        SDL_SetError("Audio device is already opened");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1029
        return (-1);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1030
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1031
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1032
    if (obtained) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1033
        id = open_audio_device(NULL, 0, desired, obtained,
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1034
                               SDL_AUDIO_ALLOW_ANY_CHANGE, 1);
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1035
    } else {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1036
        id = open_audio_device(NULL, 0, desired, desired, 0, 1);
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1037
    }
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
  1038
    if (id > 1) {               /* this should never happen in theory... */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1039
        SDL_CloseAudioDevice(id);
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
  1040
        SDL_SetError("Internal error"); /* MUST be Device ID #1! */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1041
        return (-1);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1042
    }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
  1043
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1044
    return ((id == 0) ? -1 : 0);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1045
}
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
  1046
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1047
SDL_AudioDeviceID
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff