src/audio/SDL_audio.c
author Sam Lantinga <slouken@libsdl.org>
Tue, 09 May 2006 08:52:54 +0000
changeset 1794 5605a9820134
parent 1769 290b5baf2fca
child 1895 c121d94672cb
child 3881 c1b6bb5205f1
permissions -rw-r--r--
Fixed bug #137 If SDL_OpenAudio() is passed zero for the desired format fields, the following environment variables will be used to fill them in: SDL_AUDIO_FREQUENCY SDL_AUDIO_FORMAT SDL_AUDIO_CHANNELS SDL_AUDIO_SAMPLES If an environment variable is not specified, it will be set to a reasonable default value.
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
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1204
diff changeset
     3
    Copyright (C) 1997-2006 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
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
    31
#ifdef __OS2__
1487
dc6b59e925a2 Cleaning up warnings on MacOS X
Sam Lantinga <slouken@libsdl.org>
parents: 1442
diff changeset
    32
/* We'll need the DosSetPriority() API! */
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
    33
#define INCL_DOSPROCESS
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
    34
#include <os2.h>
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
    35
#endif
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
    36
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    37
/* Available audio drivers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    38
static AudioBootStrap *bootstrap[] = {
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents: 1562
diff changeset
    39
#if SDL_AUDIO_DRIVER_BSD
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents: 1562
diff changeset
    40
	&BSD_AUDIO_bootstrap,
94
ae6e6b73333f Cleaned up the OpenBSD port, thanks to Peter Valchev
Sam Lantinga <slouken@lokigames.com>
parents: 68
diff changeset
    41
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    42
#if SDL_AUDIO_DRIVER_OSS
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    43
	&DSP_bootstrap,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    44
	&DMA_bootstrap,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    45
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    46
#if SDL_AUDIO_DRIVER_ALSA
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    47
	&ALSA_bootstrap,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    48
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    49
#if SDL_AUDIO_DRIVER_QNXNTO
663
8bedd6d61642 Date: Sat, 2 Aug 2003 16:22:51 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 654
diff changeset
    50
	&QNXNTOAUDIO_bootstrap,
8bedd6d61642 Date: Sat, 2 Aug 2003 16:22:51 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 654
diff changeset
    51
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    52
#if SDL_AUDIO_DRIVER_SUNAUDIO
148
8758b8d42cd9 Audio subsystem no longer assumes sun audio API on UNIX systems
Sam Lantinga <slouken@libsdl.org>
parents: 121
diff changeset
    53
	&SUNAUDIO_bootstrap,
8758b8d42cd9 Audio subsystem no longer assumes sun audio API on UNIX systems
Sam Lantinga <slouken@libsdl.org>
parents: 121
diff changeset
    54
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    55
#if SDL_AUDIO_DRIVER_DMEDIA
148
8758b8d42cd9 Audio subsystem no longer assumes sun audio API on UNIX systems
Sam Lantinga <slouken@libsdl.org>
parents: 121
diff changeset
    56
	&DMEDIA_bootstrap,
35
d3bc792e136d Added detection of Open Sound System on Solaris x86
Sam Lantinga <slouken@lokigames.com>
parents: 21
diff changeset
    57
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    58
#if SDL_AUDIO_DRIVER_ARTS
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    59
	&ARTS_bootstrap,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    60
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    61
#if SDL_AUDIO_DRIVER_ESD
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    62
	&ESD_bootstrap,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    63
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    64
#if SDL_AUDIO_DRIVER_NAS
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    65
	&NAS_bootstrap,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    66
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    67
#if SDL_AUDIO_DRIVER_DSOUND
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    68
	&DSOUND_bootstrap,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    69
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    70
#if SDL_AUDIO_DRIVER_WAVEOUT
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    71
	&WAVEOUT_bootstrap,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    72
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    73
#if SDL_AUDIO_DRIVER_PAUD
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    74
	&Paud_bootstrap,
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    75
#endif
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    76
#if SDL_AUDIO_DRIVER_BAUDIO
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    77
	&BAUDIO_bootstrap,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    78
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    79
#if SDL_AUDIO_DRIVER_COREAUDIO
935
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents: 808
diff changeset
    80
	&COREAUDIO_bootstrap,
f8d5ddc7aef1 Audio improvements from Max Horn, including a new CoreAudio driver for MacOSX
Sam Lantinga <slouken@libsdl.org>
parents: 808
diff changeset
    81
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    82
#if SDL_AUDIO_DRIVER_SNDMGR
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    83
	&SNDMGR_bootstrap,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
    84
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    85
#if SDL_AUDIO_DRIVER_AHI
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
    86
	&AHI_bootstrap,
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
    87
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    88
#if SDL_AUDIO_DRIVER_MINT
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 630
diff changeset
    89
	&MINTAUDIO_GSXB_bootstrap,
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 630
diff changeset
    90
	&MINTAUDIO_MCSN_bootstrap,
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 630
diff changeset
    91
	&MINTAUDIO_STFA_bootstrap,
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 630
diff changeset
    92
	&MINTAUDIO_XBIOS_bootstrap,
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 630
diff changeset
    93
	&MINTAUDIO_DMA8_bootstrap,
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
    94
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
    95
#if SDL_AUDIO_DRIVER_DISK
68
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 38
diff changeset
    96
	&DISKAUD_bootstrap,
ac6645260d31 Added an audio driver that writes to disk (thanks Ryan!)
Sam Lantinga <slouken@lokigames.com>
parents: 38
diff changeset
    97
#endif
1532
30f189cdd82b Implemented dummy audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 1487
diff changeset
    98
#if SDL_AUDIO_DRIVER_DUMMY
30f189cdd82b Implemented dummy audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 1487
diff changeset
    99
	&DUMMYAUD_bootstrap,
30f189cdd82b Implemented dummy audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 1487
diff changeset
   100
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   101
#if SDL_AUDIO_DRIVER_DC
509
dad72daf44b3 Added initial support for Dreamcast (thanks HERO!)
Sam Lantinga <slouken@libsdl.org>
parents: 398
diff changeset
   102
	&DCAUD_bootstrap,
dad72daf44b3 Added initial support for Dreamcast (thanks HERO!)
Sam Lantinga <slouken@libsdl.org>
parents: 398
diff changeset
   103
#endif
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   104
#if SDL_AUDIO_DRIVER_MMEAUDIO
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   105
	&MMEAUDIO_bootstrap,
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   106
#endif
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   107
#if SDL_AUDIO_DRIVER_DART
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   108
	&DART_bootstrap,
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   109
#endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   110
	NULL
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   111
};
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   112
SDL_AudioDevice *current_audio = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   113
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   114
/* Various local functions */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   115
int SDL_AudioInit(const char *driver_name);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   116
void SDL_AudioQuit(void);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   117
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
   118
#if SDL_AUDIO_DRIVER_AHI
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   119
static int audio_configured = 0;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   120
#endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   121
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   122
/* The general mixing thread function */
1769
290b5baf2fca Fixed bug #215
Sam Lantinga <slouken@libsdl.org>
parents: 1567
diff changeset
   123
int SDLCALL SDL_RunAudio(void *audiop)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   124
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   125
	SDL_AudioDevice *audio = (SDL_AudioDevice *)audiop;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   126
	Uint8 *stream;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   127
	int    stream_len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   128
	void  *udata;
1769
290b5baf2fca Fixed bug #215
Sam Lantinga <slouken@libsdl.org>
parents: 1567
diff changeset
   129
	void (SDLCALL *fill)(void *userdata,Uint8 *stream, int len);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   130
	int    silence;
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
   131
#if SDL_AUDIO_DRIVER_AHI
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   132
	int started = 0;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   133
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   134
/* AmigaOS NEEDS that the audio driver is opened in the thread that uses it! */
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   135
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   136
	D(bug("Task audio started audio struct:<%lx>...\n",audiop));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   137
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   138
	D(bug("Before Openaudio..."));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   139
	if(audio->OpenAudio(audio, &audio->spec)==-1)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   140
	{
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   141
		D(bug("Open audio failed...\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   142
		return(-1);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   143
	}
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   144
	D(bug("OpenAudio...OK\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   145
#endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   146
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   147
	/* Perform any thread setup */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   148
	if ( audio->ThreadInit ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   149
		audio->ThreadInit(audio);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   150
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   151
	audio->threadid = SDL_ThreadID();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   152
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   153
	/* Set up the mixing function */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   154
	fill  = audio->spec.callback;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   155
	udata = audio->spec.userdata;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   156
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
   157
#if SDL_AUDIO_DRIVER_AHI
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   158
	audio_configured = 1;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   159
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   160
	D(bug("Audio configured... Checking for conversion\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   161
	SDL_mutexP(audio->mixer_lock);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   162
	D(bug("Semaphore obtained...\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   163
#endif
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   164
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   165
	if ( audio->convert.needed ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   166
		if ( audio->convert.src_format == AUDIO_U8 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   167
			silence = 0x80;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   168
		} else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   169
			silence = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   170
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   171
		stream_len = audio->convert.len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   172
	} else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   173
		silence = audio->spec.silence;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   174
		stream_len = audio->spec.size;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   175
	}
1561
c724c4a99759 Try to fill the hardware audio buffer immediately.
Ryan C. Gordon <icculus@icculus.org>
parents: 1532
diff changeset
   176
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
   177
#if SDL_AUDIO_DRIVER_AHI
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   178
	SDL_mutexV(audio->mixer_lock);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   179
	D(bug("Entering audio loop...\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   180
#endif
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   181
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   182
#ifdef __OS2__
1487
dc6b59e925a2 Cleaning up warnings on MacOS X
Sam Lantinga <slouken@libsdl.org>
parents: 1442
diff changeset
   183
        /* Increase the priority of this thread to make sure that
dc6b59e925a2 Cleaning up warnings on MacOS X
Sam Lantinga <slouken@libsdl.org>
parents: 1442
diff changeset
   184
           the audio will be continuous all the time! */
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   185
#ifdef USE_DOSSETPRIORITY
1442
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   186
        if (SDL_getenv("SDL_USE_TIMECRITICAL_AUDIO"))
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   187
        {
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   188
#ifdef DEBUG_BUILD
1442
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   189
          printf("[SDL_RunAudio] : Setting priority to TimeCritical+0! (TID%d)\n", SDL_ThreadID());
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   190
#endif
1442
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   191
          DosSetPriority(PRTYS_THREAD, PRTYC_TIMECRITICAL, 0, 0);
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   192
        }
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   193
        else
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   194
        {
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   195
#ifdef DEBUG_BUILD
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   196
          printf("[SDL_RunAudio] : Setting priority to ForegroundServer+0! (TID%d)\n", SDL_ThreadID());
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   197
#endif
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   198
          DosSetPriority(PRTYS_THREAD, PRTYC_FOREGROUNDSERVER, 0, 0);
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1408
diff changeset
   199
        }
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   200
#endif
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   201
#endif
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   202
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   203
	/* Loop, filling the audio buffers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   204
	while ( audio->enabled ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   205
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   206
		/* Fill the current buffer with sound */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   207
		if ( audio->convert.needed ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   208
			if ( audio->convert.buf ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   209
				stream = audio->convert.buf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   210
			} else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   211
				continue;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   212
			}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   213
		} else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   214
			stream = audio->GetAudioBuf(audio);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   215
			if ( stream == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   216
				stream = audio->fake_stream;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   217
			}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   218
		}
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
   219
		SDL_memset(stream, silence, stream_len);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   220
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   221
		if ( ! audio->paused ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   222
			SDL_mutexP(audio->mixer_lock);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   223
			(*fill)(udata, stream, stream_len);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   224
			SDL_mutexV(audio->mixer_lock);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   225
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   226
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   227
		/* Convert the audio if necessary */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   228
		if ( audio->convert.needed ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   229
			SDL_ConvertAudio(&audio->convert);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   230
			stream = audio->GetAudioBuf(audio);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   231
			if ( stream == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   232
				stream = audio->fake_stream;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   233
			}
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
   234
			SDL_memcpy(stream, audio->convert.buf,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   235
			               audio->convert.len_cvt);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   236
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   237
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   238
		/* Ready current buffer for play and change current buffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   239
		if ( stream != audio->fake_stream ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   240
			audio->PlayAudio(audio);
1562
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   241
		}
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   242
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   243
		/* Wait for an audio buffer to become available */
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   244
		if ( stream == audio->fake_stream ) {
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   245
			SDL_Delay((audio->spec.samples*1000)/audio->spec.freq);
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   246
		} else {
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   247
			audio->WaitAudio(audio);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   248
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   249
	}
1562
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   250
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   251
	/* Wait for the audio to drain.. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   252
	if ( audio->WaitDone ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   253
		audio->WaitDone(audio);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   254
	}
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   255
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
   256
#if SDL_AUDIO_DRIVER_AHI
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   257
	D(bug("WaitAudio...Done\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   258
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   259
	audio->CloseAudio(audio);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   260
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   261
	D(bug("CloseAudio..Done, subtask exiting...\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   262
	audio_configured = 0;
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   263
#endif
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   264
#ifdef __OS2__
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   265
#ifdef DEBUG_BUILD
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   266
        printf("[SDL_RunAudio] : Task exiting. (TID%d)\n", SDL_ThreadID());
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   267
#endif
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 955
diff changeset
   268
#endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   269
	return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   270
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   271
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   272
static void SDL_LockAudio_Default(SDL_AudioDevice *audio)
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   273
{
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   274
	if ( audio->thread && (SDL_ThreadID() == audio->threadid) ) {
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   275
		return;
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   276
	}
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   277
	SDL_mutexP(audio->mixer_lock);
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   278
}
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   279
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   280
static void SDL_UnlockAudio_Default(SDL_AudioDevice *audio)
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   281
{
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   282
	if ( audio->thread && (SDL_ThreadID() == audio->threadid) ) {
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   283
		return;
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   284
	}
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   285
	SDL_mutexV(audio->mixer_lock);
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   286
}
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   287
1794
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   288
static Uint16 SDL_ParseAudioFormat(const char *string)
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   289
{
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   290
	Uint16 format = 0;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   291
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   292
	switch (*string) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   293
	    case 'U':
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   294
		++string;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   295
		format |= 0x0000;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   296
		break;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   297
	    case 'S':
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   298
		++string;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   299
		format |= 0x8000;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   300
		break;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   301
	    default:
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   302
		return 0;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   303
	}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   304
	switch (SDL_atoi(string)) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   305
	    case 8:
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   306
		string += 1;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   307
		format |= 8;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   308
		break;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   309
	    case 16:
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   310
		string += 2;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   311
		format |= 16;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   312
		if ( SDL_strcmp(string, "LSB") == 0
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   313
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   314
		     || SDL_strcmp(string, "SYS") == 0
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   315
#endif
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   316
		    ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   317
			format |= 0x0000;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   318
		}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   319
		if ( SDL_strcmp(string, "MSB") == 0
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   320
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   321
		     || SDL_strcmp(string, "SYS") == 0
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   322
#endif
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   323
		    ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   324
			format |= 0x1000;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   325
		}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   326
		break;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   327
	    default:
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   328
		return 0;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   329
	}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   330
	return format;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   331
}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   332
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   333
int SDL_AudioInit(const char *driver_name)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   334
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   335
	SDL_AudioDevice *audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   336
	int i = 0, idx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   337
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   338
	/* Check to make sure we don't overwrite 'current_audio' */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   339
	if ( current_audio != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   340
		SDL_AudioQuit();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   341
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   342
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   343
	/* Select the proper audio driver */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   344
	audio = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   345
	idx = 0;
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   346
#if SDL_AUDIO_DRIVER_ESD
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
   347
	if ( (driver_name == NULL) && (SDL_getenv("ESPEAKER") != NULL) ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   348
		/* Ahem, we know that if ESPEAKER is set, user probably wants
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   349
		   to use ESD, but don't start it if it's not already running.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   350
		   This probably isn't the place to do this, but... Shh! :)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   351
		 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   352
		for ( i=0; bootstrap[i]; ++i ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
   353
			if ( SDL_strcmp(bootstrap[i]->name, "esd") == 0 ) {
1341
d02b552e5304 Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
   354
#ifdef HAVE_PUTENV
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   355
				const char *esd_no_spawn;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   356
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   357
				/* Don't start ESD if it's not running */
1341
d02b552e5304 Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
   358
				esd_no_spawn = getenv("ESD_NO_SPAWN");
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   359
				if ( esd_no_spawn == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   360
					putenv("ESD_NO_SPAWN=1");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   361
				}
1341
d02b552e5304 Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
   362
#endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   363
				if ( bootstrap[i]->available() ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   364
					audio = bootstrap[i]->create(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   365
					break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   366
				}
1341
d02b552e5304 Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents: 1336
diff changeset
   367
#ifdef HAVE_UNSETENV
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   368
				if ( esd_no_spawn == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   369
					unsetenv("ESD_NO_SPAWN");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   370
				}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   371
#endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   372
			}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   373
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   374
	}
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   375
#endif /* SDL_AUDIO_DRIVER_ESD */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   376
	if ( audio == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   377
		if ( driver_name != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   378
#if 0	/* This will be replaced with a better driver selection API */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
   379
			if ( SDL_strrchr(driver_name, ':') != NULL ) {
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
   380
				idx = atoi(SDL_strrchr(driver_name, ':')+1);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   381
			}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   382
#endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   383
			for ( i=0; bootstrap[i]; ++i ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
   384
				if (SDL_strncmp(bootstrap[i]->name, driver_name,
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
   385
				            SDL_strlen(bootstrap[i]->name)) == 0) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   386
					if ( bootstrap[i]->available() ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   387
						audio=bootstrap[i]->create(idx);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   388
						break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   389
					}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   390
				}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   391
			}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   392
		} else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   393
			for ( i=0; bootstrap[i]; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   394
				if ( bootstrap[i]->available() ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   395
					audio = bootstrap[i]->create(idx);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   396
					if ( audio != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   397
						break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   398
					}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   399
				}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   400
			}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   401
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   402
		if ( audio == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   403
			SDL_SetError("No available audio device");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   404
#if 0 /* Don't fail SDL_Init() if audio isn't available.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   405
         SDL_OpenAudio() will handle it at that point.  *sigh*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   406
       */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   407
			return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   408
#endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   409
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   410
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   411
	current_audio = audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   412
	if ( current_audio ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   413
		current_audio->name = bootstrap[i]->name;
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   414
		if ( !current_audio->LockAudio && !current_audio->UnlockAudio ) {
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   415
			current_audio->LockAudio = SDL_LockAudio_Default;
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   416
			current_audio->UnlockAudio = SDL_UnlockAudio_Default;
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   417
		}
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   418
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   419
	return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   420
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   421
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   422
char *SDL_AudioDriverName(char *namebuf, int maxlen)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   423
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   424
	if ( current_audio != NULL ) {
1379
c0a74f199ecf Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
   425
		SDL_strlcpy(namebuf, current_audio->name, maxlen);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   426
		return(namebuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   427
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   428
	return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   429
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   430
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   431
int SDL_OpenAudio(SDL_AudioSpec *desired, SDL_AudioSpec *obtained)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   432
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   433
	SDL_AudioDevice *audio;
1794
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   434
	const char *env;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   435
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   436
	/* Start up the audio driver, if necessary */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   437
	if ( ! current_audio ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   438
		if ( (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   439
		     (current_audio == NULL) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   440
			return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   441
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   442
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   443
	audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   444
262
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
   445
	if (audio->opened) {
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
   446
		SDL_SetError("Audio device is already opened");
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
   447
		return(-1);
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
   448
	}
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
   449
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   450
	/* Verify some parameters */
1794
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   451
	if ( desired->freq == 0 ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   452
		env = SDL_getenv("SDL_AUDIO_FREQUENCY");
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   453
		if ( env ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   454
			desired->freq = SDL_atoi(env);
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   455
		}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   456
	}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   457
	if ( desired->freq == 0 ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   458
		/* Pick some default audio frequency */
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   459
		desired->freq = 22050;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   460
	}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   461
	if ( desired->format == 0 ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   462
		env = SDL_getenv("SDL_AUDIO_FORMAT");
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   463
		if ( env ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   464
			desired->format = SDL_ParseAudioFormat(env);
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   465
		}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   466
	}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   467
	if ( desired->format == 0 ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   468
		/* Pick some default audio format */
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   469
		desired->format = AUDIO_S16;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   470
	}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   471
	if ( desired->channels == 0 ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   472
		env = SDL_getenv("SDL_AUDIO_CHANNELS");
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   473
		if ( env ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   474
			desired->channels = SDL_atoi(env);
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   475
		}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   476
	}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   477
	if ( desired->channels == 0 ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   478
		/* Pick a default number of channels */
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   479
		desired->channels = 2;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   480
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   481
	switch ( desired->channels ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   482
	    case 1:	/* Mono */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   483
	    case 2:	/* Stereo */
942
41a59de7f2ed Here are patches for SDL12 and SDL_mixer for 4 or 6 channel
Sam Lantinga <slouken@libsdl.org>
parents: 936
diff changeset
   484
	    case 4:	/* surround */
41a59de7f2ed Here are patches for SDL12 and SDL_mixer for 4 or 6 channel
Sam Lantinga <slouken@libsdl.org>
parents: 936
diff changeset
   485
	    case 6:	/* surround with center and lfe */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   486
		break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   487
	    default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   488
		SDL_SetError("1 (mono) and 2 (stereo) channels supported");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   489
		return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   490
	}
1794
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   491
	if ( desired->samples == 0 ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   492
		env = SDL_getenv("SDL_AUDIO_SAMPLES");
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   493
		if ( env ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   494
			desired->samples = SDL_atoi(env);
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   495
		}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   496
	}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   497
	if ( desired->samples == 0 ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   498
		/* Pick a default of ~46 ms at desired frequency */
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   499
		int samples = (desired->freq / 1000) * 46;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   500
		int power2 = 1;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   501
		while ( power2 < samples ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   502
			power2 *= 2;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   503
		}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   504
		desired->samples = power2;
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   505
	}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   506
	if ( desired->callback == NULL ) {
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   507
		SDL_SetError("SDL_OpenAudio() passed a NULL callback");
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   508
		return(-1);
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   509
	}
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   510
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
   511
#if defined(__MACOS__) || (defined(__RISCOS__) && SDL_THREADS_DISABLED)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   512
	/* FIXME: Need to implement PPC interrupt asm for SDL_LockAudio() */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   513
#else
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
   514
#if defined(__MINT__) && SDL_THREADS_DISABLED
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
   515
	/* Uses interrupt driven audio, without thread */
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
   516
#else
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   517
	/* Create a semaphore for locking the sound buffers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   518
	audio->mixer_lock = SDL_CreateMutex();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   519
	if ( audio->mixer_lock == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   520
		SDL_SetError("Couldn't create mixer lock");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   521
		SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   522
		return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   523
	}
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents: 322
diff changeset
   524
#endif /* __MINT__ */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
   525
#endif /* __MACOS__ */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   526
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   527
	/* Calculate the silence and size of the audio specification */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   528
	SDL_CalculateAudioSpec(desired);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   529
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   530
	/* Open the audio subsystem */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
   531
	SDL_memcpy(&audio->spec, desired, sizeof(audio->spec));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   532
	audio->convert.needed = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   533
	audio->enabled = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   534
	audio->paused  = 1;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   535
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   536
#if !SDL_AUDIO_DRIVER_AHI
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   537
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   538
/* AmigaOS opens audio inside the main loop */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   539
	audio->opened = audio->OpenAudio(audio, &audio->spec)+1;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   540
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   541
	if ( ! audio->opened ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   542
		SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   543
		return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   544
	}
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   545
#else
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   546
	D(bug("Locking semaphore..."));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   547
	SDL_mutexP(audio->mixer_lock);
1408
ceb5c2fec4f1 Fixed some preprocessor mangling
Sam Lantinga <slouken@libsdl.org>
parents: 1406
diff changeset
   548
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   549
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   550
	audio->thread = SDL_CreateThread(SDL_RunAudio, audio);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   551
	D(bug("Created thread...\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   552
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   553
	if ( audio->thread == NULL ) {
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   554
		SDL_mutexV(audio->mixer_lock);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   555
		SDL_CloseAudio();
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   556
		SDL_SetError("Couldn't create audio thread");
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   557
		return(-1);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   558
	}
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   559
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   560
	while(!audio_configured)
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   561
		SDL_Delay(100);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   562
#endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   563
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   564
	/* If the audio driver changes the buffer size, accept it */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   565
	if ( audio->spec.samples != desired->samples ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   566
		desired->samples = audio->spec.samples;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   567
		SDL_CalculateAudioSpec(desired);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   568
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   569
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   570
	/* Allocate a fake audio memory buffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   571
	audio->fake_stream = SDL_AllocAudioMem(audio->spec.size);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   572
	if ( audio->fake_stream == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   573
		SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   574
		SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   575
		return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   576
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   577
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   578
	/* See if we need to do any conversion */
808
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   579
	if ( obtained != NULL ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
   580
		SDL_memcpy(obtained, &audio->spec, sizeof(audio->spec));
808
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   581
	} else if ( desired->freq != audio->spec.freq ||
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   582
                    desired->format != audio->spec.format ||
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   583
	            desired->channels != audio->spec.channels ) {
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   584
		/* Build an audio conversion block */
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   585
		if ( SDL_BuildAudioCVT(&audio->convert,
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   586
			desired->format, desired->channels,
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   587
					desired->freq,
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   588
			audio->spec.format, audio->spec.channels,
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   589
					audio->spec.freq) < 0 ) {
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   590
			SDL_CloseAudio();
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   591
			return(-1);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   592
		}
808
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   593
		if ( audio->convert.needed ) {
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   594
			audio->convert.len = desired->size;
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   595
			audio->convert.buf =(Uint8 *)SDL_AllocAudioMem(
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   596
			   audio->convert.len*audio->convert.len_mult);
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   597
			if ( audio->convert.buf == NULL ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   598
				SDL_CloseAudio();
808
0defd90ef27c Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   599
				SDL_OutOfMemory();
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   600
				return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   601
			}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   602
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   603
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   604
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   605
#if !SDL_AUDIO_DRIVER_AHI
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   606
	/* Start the audio thread if necessary */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   607
	switch (audio->opened) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   608
		case  1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   609
			/* Start the audio thread */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
   610
#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
   611
#undef SDL_CreateThread
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
   612
			audio->thread = SDL_CreateThread(SDL_RunAudio, audio, NULL, NULL);
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
   613
#else
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   614
			audio->thread = SDL_CreateThread(SDL_RunAudio, audio);
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
   615
#endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   616
			if ( audio->thread == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   617
				SDL_CloseAudio();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   618
				SDL_SetError("Couldn't create audio thread");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   619
				return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   620
			}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   621
			break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   622
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   623
		default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   624
			/* The audio is now playing */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   625
			break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   626
	}
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   627
#else
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   628
	SDL_mutexV(audio->mixer_lock);
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   629
	D(bug("SDL_OpenAudio USCITA...\n"));
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   630
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   631
#endif
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   632
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   633
	return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   634
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   635
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   636
SDL_audiostatus SDL_GetAudioStatus(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   637
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   638
	SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   639
	SDL_audiostatus status;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   640
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   641
	status = SDL_AUDIO_STOPPED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   642
	if ( audio && audio->enabled ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   643
		if ( audio->paused ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   644
			status = SDL_AUDIO_PAUSED;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   645
		} else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   646
			status = SDL_AUDIO_PLAYING;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   647
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   648
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   649
	return(status);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   650
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   651
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   652
void SDL_PauseAudio (int pause_on)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   653
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   654
	SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   655
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   656
	if ( audio ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   657
		audio->paused = pause_on;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   658
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   659
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   660
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   661
void SDL_LockAudio (void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   662
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   663
	SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   664
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   665
	/* Obtain a lock on the mixing buffers */
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   666
	if ( audio && audio->LockAudio ) {
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   667
		audio->LockAudio(audio);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   668
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   669
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   670
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   671
void SDL_UnlockAudio (void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   672
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   673
	SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   674
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   675
	/* Release lock on the mixing buffers */
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   676
	if ( audio && audio->UnlockAudio ) {
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   677
		audio->UnlockAudio(audio);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   678
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   679
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   680
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   681
void SDL_CloseAudio (void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   682
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   683
	SDL_QuitSubSystem(SDL_INIT_AUDIO);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   684
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   685
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   686
void SDL_AudioQuit(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   687
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   688
	SDL_AudioDevice *audio = current_audio;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   689
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   690
	if ( audio ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   691
		audio->enabled = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   692
		if ( audio->thread != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   693
			SDL_WaitThread(audio->thread, NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   694
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   695
		if ( audio->mixer_lock != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   696
			SDL_DestroyMutex(audio->mixer_lock);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   697
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   698
		if ( audio->fake_stream != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   699
			SDL_FreeAudioMem(audio->fake_stream);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   700
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   701
		if ( audio->convert.needed ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   702
			SDL_FreeAudioMem(audio->convert.buf);
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   703
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   704
		}
1406
39ca9a4b22f3 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   705
#if !SDL_AUDIO_DRIVER_AHI
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   706
		if ( audio->opened ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   707
			audio->CloseAudio(audio);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   708
			audio->opened = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   709
		}
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   710
#endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   711
		/* Free the driver data */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   712
		audio->free(audio);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   713
		current_audio = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   714
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   715
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   716
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   717
#define NUM_FORMATS	6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   718
static int format_idx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   719
static int format_idx_sub;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   720
static Uint16 format_list[NUM_FORMATS][NUM_FORMATS] = {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   721
 { AUDIO_U8, AUDIO_S8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   722
 { AUDIO_S8, AUDIO_U8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   723
 { AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_U8, AUDIO_S8 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   724
 { AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8, AUDIO_S8 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   725
 { AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U8, AUDIO_S8 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   726
 { AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U8, AUDIO_S8 },
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   727
};
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   728
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   729
Uint16 SDL_FirstAudioFormat(Uint16 format)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   730
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   731
	for ( format_idx=0; format_idx < NUM_FORMATS; ++format_idx ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   732
		if ( format_list[format_idx][0] == format ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   733
			break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   734
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   735
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   736
	format_idx_sub = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   737
	return(SDL_NextAudioFormat());
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   738
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   739
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   740
Uint16 SDL_NextAudioFormat(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   741
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   742
	if ( (format_idx == NUM_FORMATS) || (format_idx_sub == NUM_FORMATS) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   743
		return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   744
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   745
	return(format_list[format_idx][format_idx_sub++]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   746
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   747
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   748
void SDL_CalculateAudioSpec(SDL_AudioSpec *spec)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   749
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   750
	switch (spec->format) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   751
		case AUDIO_U8:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   752
			spec->silence = 0x80;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   753
			break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   754
		default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   755
			spec->silence = 0x00;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   756
			break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   757
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   758
	spec->size = (spec->format&0xFF)/8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   759
	spec->size *= spec->channels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   760
	spec->size *= spec->samples;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   761
}