src/audio/SDL_audio.c
author Sam Lantinga <slouken@libsdl.org>
Sat, 13 Dec 2008 06:36:47 +0000
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parent 2859 99210400e8b9
child 2938 2929ed239d2a
permissions -rw-r--r--
Fixed SDL 1.2 compatibility problem. The API specifies that SDL_OpenAudio() will fill out the 'desired' audio spec with the correct samples and size set by the driver. This value is important since it may be used by applications that size audio buffers, etc. However, we want to allow advanced applications to call SDL_OpenAudioDevice() which gets passed a const 'desired' parameter, and have the correct data filled into the 'obtained' parameter, possibly allowing or not allowing format changes. So... 'obtained' becomes the audio format the user callback is expected to use, and we add flags to allow the application to specify which format changes are allowed. Note: We really need to add a way to query the 'obtained' audio spec.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2009 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* Allow access to a raw mixing buffer */
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#include "SDL.h"
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#include "SDL_audio_c.h"
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#include "SDL_audiomem.h"
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#include "SDL_sysaudio.h"
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#define _THIS	SDL_AudioDevice *this
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static SDL_AudioDriver current_audio;
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static SDL_AudioDevice *open_devices[16];
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/* !!! FIXME: These are wordy and unlocalized... */
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#define DEFAULT_OUTPUT_DEVNAME "System audio output device"
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#define DEFAULT_INPUT_DEVNAME "System audio capture device"
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/*
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 * Not all of these will be compiled and linked in, but it's convenient
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 *  to have a complete list here and saves yet-another block of #ifdefs...
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 *  Please see bootstrap[], below, for the actual #ifdef mess.
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 */
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extern AudioBootStrap BSD_AUDIO_bootstrap;
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extern AudioBootStrap DSP_bootstrap;
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extern AudioBootStrap DMA_bootstrap;
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extern AudioBootStrap ALSA_bootstrap;
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extern AudioBootStrap PULSEAUDIO_bootstrap;
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extern AudioBootStrap QNXNTOAUDIO_bootstrap;
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extern AudioBootStrap SUNAUDIO_bootstrap;
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extern AudioBootStrap DMEDIA_bootstrap;
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extern AudioBootStrap ARTS_bootstrap;
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extern AudioBootStrap ESD_bootstrap;
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extern AudioBootStrap NAS_bootstrap;
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extern AudioBootStrap DSOUND_bootstrap;
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extern AudioBootStrap WINWAVEOUT_bootstrap;
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extern AudioBootStrap PAUDIO_bootstrap;
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extern AudioBootStrap BEOSAUDIO_bootstrap;
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extern AudioBootStrap COREAUDIO_bootstrap;
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extern AudioBootStrap COREAUDIOIPHONE_bootstrap;
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extern AudioBootStrap SNDMGR_bootstrap;
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extern AudioBootStrap MINTAUDIO_GSXB_bootstrap;
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extern AudioBootStrap MINTAUDIO_MCSN_bootstrap;
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extern AudioBootStrap MINTAUDIO_STFA_bootstrap;
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extern AudioBootStrap MINTAUDIO_XBIOS_bootstrap;
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extern AudioBootStrap MINTAUDIO_DMA8_bootstrap;
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extern AudioBootStrap DISKAUD_bootstrap;
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extern AudioBootStrap DUMMYAUD_bootstrap;
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extern AudioBootStrap DCAUD_bootstrap;
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extern AudioBootStrap MMEAUDIO_bootstrap;
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extern AudioBootStrap DART_bootstrap;
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extern AudioBootStrap NDSAUD_bootstrap;
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/* Available audio drivers */
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static AudioBootStrap *bootstrap[] = {
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#if SDL_AUDIO_DRIVER_BSD
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    &BSD_AUDIO_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_OSS
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    &DSP_bootstrap,
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    &DMA_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_ALSA
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    &ALSA_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_PULSEAUDIO
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    &PULSEAUDIO_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_QNXNTO
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    &QNXNTOAUDIO_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_SUNAUDIO
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    &SUNAUDIO_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_DMEDIA
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    &DMEDIA_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_ARTS
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    &ARTS_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_ESD
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    &ESD_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_NAS
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    &NAS_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_DSOUND
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    &DSOUND_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_WINWAVEOUT
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    &WINWAVEOUT_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_PAUDIO
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    &PAUDIO_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_BEOSAUDIO
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    &BEOSAUDIO_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_COREAUDIO
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    &COREAUDIO_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_COREAUDIOIPHONE
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    &COREAUDIOIPHONE_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_SNDMGR
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    &SNDMGR_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_MINT
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    &MINTAUDIO_GSXB_bootstrap,
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    &MINTAUDIO_MCSN_bootstrap,
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    &MINTAUDIO_STFA_bootstrap,
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    &MINTAUDIO_XBIOS_bootstrap,
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    &MINTAUDIO_DMA8_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_DISK
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    &DISKAUD_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_DUMMY
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    &DUMMYAUD_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_DC
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    &DCAUD_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_MMEAUDIO
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    &MMEAUDIO_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_DART
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    &DART_bootstrap,
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#endif
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#if SDL_AUDIO_DRIVER_NDS
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    &NDSAUD_bootstrap,
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#endif
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    NULL
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};
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static SDL_AudioDevice *
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get_audio_device(SDL_AudioDeviceID id)
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{
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    id--;
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    if ((id >= SDL_arraysize(open_devices)) || (open_devices[id] == NULL)) {
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        SDL_SetError("Invalid audio device ID");
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        return NULL;
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    }
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    return open_devices[id];
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}
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/* stubs for audio drivers that don't need a specific entry point... */
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static int
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SDL_AudioDetectDevices_Default(int iscapture)
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{
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    return -1;
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}
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static void
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SDL_AudioThreadInit_Default(_THIS)
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{                               /* no-op. */
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}
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static void
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SDL_AudioWaitDevice_Default(_THIS)
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{                               /* no-op. */
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}
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static void
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SDL_AudioPlayDevice_Default(_THIS)
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{                               /* no-op. */
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}
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static Uint8 *
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SDL_AudioGetDeviceBuf_Default(_THIS)
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{
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    return NULL;
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}
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static void
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SDL_AudioWaitDone_Default(_THIS)
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{                               /* no-op. */
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}
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static void
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SDL_AudioCloseDevice_Default(_THIS)
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{                               /* no-op. */
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}
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static void
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SDL_AudioDeinitialize_Default(void)
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{                               /* no-op. */
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}
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static int
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SDL_AudioOpenDevice_Default(_THIS, const char *devname, int iscapture)
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{
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    return 0;
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}
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static const char *
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SDL_AudioGetDeviceName_Default(int index, int iscapture)
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{
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    SDL_SetError("No such device");
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    return NULL;
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}
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static void
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SDL_AudioLockDevice_Default(SDL_AudioDevice * device)
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{
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    if (device->thread && (SDL_ThreadID() == device->threadid)) {
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        return;
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    }
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    SDL_mutexP(device->mixer_lock);
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}
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static void
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SDL_AudioUnlockDevice_Default(SDL_AudioDevice * device)
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{
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    if (device->thread && (SDL_ThreadID() == device->threadid)) {
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        return;
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    }
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    SDL_mutexV(device->mixer_lock);
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}
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static void
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finalize_audio_entry_points(void)
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{
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    /*
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     * Fill in stub functions for unused driver entry points. This lets us
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     *  blindly call them without having to check for validity first.
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     */
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#define FILL_STUB(x) \
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        if (current_audio.impl.x == NULL) { \
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            current_audio.impl.x = SDL_Audio##x##_Default; \
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        }
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    FILL_STUB(DetectDevices);
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    FILL_STUB(GetDeviceName);
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    FILL_STUB(OpenDevice);
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    FILL_STUB(ThreadInit);
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    FILL_STUB(WaitDevice);
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    FILL_STUB(PlayDevice);
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    FILL_STUB(GetDeviceBuf);
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    FILL_STUB(WaitDone);
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    FILL_STUB(CloseDevice);
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    FILL_STUB(LockDevice);
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    FILL_STUB(UnlockDevice);
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    FILL_STUB(Deinitialize);
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#undef FILL_STUB
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}
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/* Streaming functions (for when the input and output buffer sizes are different) */
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/* Write [length] bytes from buf into the streamer */
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void
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SDL_StreamWrite(SDL_AudioStreamer * stream, Uint8 * buf, int length)
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{
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    int i;
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    for (i = 0; i < length; ++i) {
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        stream->buffer[stream->write_pos] = buf[i];
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        ++stream->write_pos;
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    }
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}
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/* Read [length] bytes out of the streamer into buf */
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void
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SDL_StreamRead(SDL_AudioStreamer * stream, Uint8 * buf, int length)
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{
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    int i;
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    for (i = 0; i < length; ++i) {
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        buf[i] = stream->buffer[stream->read_pos];
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        ++stream->read_pos;
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    }
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}
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int
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SDL_StreamLength(SDL_AudioStreamer * stream)
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{
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    return (stream->write_pos - stream->read_pos) % stream->max_len;
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}
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/* Initialize the stream by allocating the buffer and setting the read/write heads to the beginning */
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int
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SDL_StreamInit(SDL_AudioStreamer * stream, int max_len, Uint8 silence)
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{
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    /* First try to allocate the buffer */
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    stream->buffer = (Uint8 *) SDL_malloc(max_len);
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    if (stream->buffer == NULL) {
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        return -1;
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    }
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    stream->max_len = max_len;
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    stream->read_pos = 0;
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    stream->write_pos = 0;
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    /* Zero out the buffer */
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    SDL_memset(stream->buffer, silence, max_len);
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    return 0;
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}
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/* Deinitialize the stream simply by freeing the buffer */
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void
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SDL_StreamDeinit(SDL_AudioStreamer * stream)
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{
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    if (stream->buffer != NULL) {
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        SDL_free(stream->buffer);
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    }
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}
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0
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/* The general mixing thread function */
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int SDLCALL
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SDL_RunAudio(void *devicep)
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{
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    SDL_AudioDevice *device = (SDL_AudioDevice *) devicep;
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    Uint8 *stream;
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    int stream_len;
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    void *udata;
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    void (SDLCALL * fill) (void *userdata, Uint8 * stream, int len);
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    int silence;
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    int stream_max_len;
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    /* For streaming when the buffer sizes don't match up */
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    Uint8 *istream;
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    int istream_len;
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    /* Perform any thread setup */
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    device->threadid = SDL_ThreadID();
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    current_audio.impl.ThreadInit(device);
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    /* Set up the mixing function */
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    fill = device->spec.callback;
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    udata = device->spec.userdata;
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    /* By default do not stream */
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    device->use_streamer = 0;
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    if (device->convert.needed) {
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        if (device->convert.src_format == AUDIO_U8) {
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            silence = 0x80;
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        } else {
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            silence = 0;
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        }
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        /* If the result of the conversion alters the length, i.e. resampling is being used, use the streamer */
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        if (device->convert.len_mult != 1 || device->convert.len_div != 1) {
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            /* The streamer's maximum length should be twice whichever is larger: spec.size or len_cvt */
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            stream_max_len = 2 * device->spec.size;
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            if (device->convert.len_mult > device->convert.len_div) {
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                stream_max_len *= device->convert.len_mult;
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                stream_max_len /= device->convert.len_div;
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   376
            }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   377
            if (SDL_StreamInit(&device->streamer, stream_max_len, silence) <
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   378
                0)
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   379
                return -1;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   380
            device->use_streamer = 1;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   381
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   382
            /* istream_len should be the length of what we grab from the callback and feed to conversion,
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   383
               so that we get close to spec_size. I.e. we want device.spec_size = istream_len * u / d
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   384
             */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   385
            istream_len =
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   386
                device->spec.size * device->convert.len_div /
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   387
                device->convert.len_mult;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   388
        }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   389
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   390
        /* stream_len = device->convert.len; */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   391
        stream_len = device->spec.size;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   392
    } else {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   393
        silence = device->spec.silence;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   394
        stream_len = device->spec.size;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   395
    }
1561
c724c4a99759 Try to fill the hardware audio buffer immediately.
Ryan C. Gordon <icculus@icculus.org>
parents: 1532
diff changeset
   396
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   397
    /* Determine if the streamer is necessary here */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   398
    if (device->use_streamer == 1) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   399
        /* This code is almost the same as the old code. The difference is, instead of reding
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   400
           directly from the callback into "stream", then converting and sending the audio off,
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   401
           we go: callback -> "istream" -> (conversion) -> streamer -> stream -> device.
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   402
           However, reading and writing with streamer are done separately:
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   403
           - We only call the callback and write to the streamer when the streamer does not
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   404
           contain enough samples to output to the device.
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   405
           - We only read from the streamer and tell the device to play when the streamer
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   406
           does have enough samples to output.
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   407
           This allows us to perform resampling in the conversion step, where the output of the
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   408
           resampling process can be any number. We will have to see what a good size for the
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   409
           stream's maximum length is, but I suspect 2*max(len_cvt, stream_len) is a good figure.
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   410
         */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   411
        while (device->enabled) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   412
            /* Only read in audio if the streamer doesn't have enough already (if it does not have enough samples to output) */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   413
            if (SDL_StreamLength(&device->streamer) < stream_len) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   414
                /* Set up istream */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   415
                if (device->convert.needed) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   416
                    if (device->convert.buf) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   417
                        istream = device->convert.buf;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   418
                    } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   419
                        continue;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   420
                    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   421
                } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   422
                    istream = current_audio.impl.GetDeviceBuf(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   423
                    if (istream == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   424
                        istream = device->fake_stream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   425
                    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   426
                }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   427
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   428
                /* Read from the callback into the _input_ stream */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   429
                if (!device->paused) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   430
                    SDL_mutexP(device->mixer_lock);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   431
                    (*fill) (udata, istream, istream_len);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   432
                    SDL_mutexV(device->mixer_lock);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   433
                }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   434
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   435
                /* Convert the audio if necessary and write to the streamer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   436
                if (device->convert.needed) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   437
                    SDL_ConvertAudio(&device->convert);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   438
                    if (istream == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   439
                        istream = device->fake_stream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   440
                    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   441
                    /*SDL_memcpy(istream, device->convert.buf, device->convert.len_cvt); */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   442
                    SDL_StreamWrite(&device->streamer, device->convert.buf,
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   443
                                    device->convert.len_cvt);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   444
                } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   445
                    SDL_StreamWrite(&device->streamer, istream, istream_len);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   446
                }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   447
            }
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   448
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   449
            /* Only output audio if the streamer has enough to output */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   450
            if (SDL_StreamLength(&device->streamer) >= stream_len) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   451
                /* Set up the output stream */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   452
                if (device->convert.needed) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   453
                    if (device->convert.buf) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   454
                        stream = device->convert.buf;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   455
                    } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   456
                        continue;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   457
                    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   458
                } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   459
                    stream = current_audio.impl.GetDeviceBuf(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   460
                    if (stream == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   461
                        stream = device->fake_stream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   462
                    }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   463
                }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   464
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   465
                /* Now read from the streamer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   466
                SDL_StreamRead(&device->streamer, stream, stream_len);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   467
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   468
                /* Ready current buffer for play and change current buffer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   469
                if (stream != device->fake_stream) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   470
                    current_audio.impl.PlayDevice(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   471
                }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   472
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   473
                /* Wait for an audio buffer to become available */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   474
                if (stream == device->fake_stream) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   475
                    SDL_Delay((device->spec.samples * 1000) /
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   476
                              device->spec.freq);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   477
                } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   478
                    current_audio.impl.WaitDevice(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   479
                }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   480
            }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   481
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   482
        }
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   483
    } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   484
        /* Otherwise, do not use the streamer. This is the old code. */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   485
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   486
        /* Loop, filling the audio buffers */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   487
        while (device->enabled) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   488
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   489
            /* Fill the current buffer with sound */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   490
            if (device->convert.needed) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   491
                if (device->convert.buf) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   492
                    stream = device->convert.buf;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   493
                } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   494
                    continue;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   495
                }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   496
            } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   497
                stream = current_audio.impl.GetDeviceBuf(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   498
                if (stream == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   499
                    stream = device->fake_stream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   500
                }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   501
            }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   502
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   503
            if (!device->paused) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   504
                SDL_mutexP(device->mixer_lock);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   505
                (*fill) (udata, stream, stream_len);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   506
                SDL_mutexV(device->mixer_lock);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   507
            }
1562
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   508
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   509
            /* Convert the audio if necessary */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   510
            if (device->convert.needed) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   511
                SDL_ConvertAudio(&device->convert);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   512
                stream = current_audio.impl.GetDeviceBuf(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   513
                if (stream == NULL) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   514
                    stream = device->fake_stream;
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   515
                }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   516
                SDL_memcpy(stream, device->convert.buf,
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   517
                           device->convert.len_cvt);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   518
            }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   519
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   520
            /* Ready current buffer for play and change current buffer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   521
            if (stream != device->fake_stream) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   522
                current_audio.impl.PlayDevice(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   523
            }
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   524
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   525
            /* Wait for an audio buffer to become available */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   526
            if (stream == device->fake_stream) {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   527
                SDL_Delay((device->spec.samples * 1000) / device->spec.freq);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   528
            } else {
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   529
                current_audio.impl.WaitDevice(device);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   530
            }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   531
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   532
    }
1562
1d487a3fab41 Fixed bug #18
Sam Lantinga <slouken@libsdl.org>
parents: 1561
diff changeset
   533
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   534
    /* Wait for the audio to drain.. */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   535
    current_audio.impl.WaitDone(device);
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   536
2716
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   537
    /* If necessary, deinit the streamer */
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   538
    if (device->use_streamer == 1)
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   539
        SDL_StreamDeinit(&device->streamer);
f8f68f47285a Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2274
diff changeset
   540
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   541
    return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   542
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   543
322
fd93a09655e3 The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   544
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1978
diff changeset
   545
static SDL_AudioFormat
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   546
SDL_ParseAudioFormat(const char *string)
1794
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   547
{
2076
939420dee849 Use SDL_strcmp(), not strcmp().
Ryan C. Gordon <icculus@icculus.org>
parents: 2070
diff changeset
   548
#define CHECK_FMT_STRING(x) if (SDL_strcmp(string, #x) == 0) return AUDIO_##x
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   549
    CHECK_FMT_STRING(U8);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   550
    CHECK_FMT_STRING(S8);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   551
    CHECK_FMT_STRING(U16LSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   552
    CHECK_FMT_STRING(S16LSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   553
    CHECK_FMT_STRING(U16MSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   554
    CHECK_FMT_STRING(S16MSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   555
    CHECK_FMT_STRING(U16SYS);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   556
    CHECK_FMT_STRING(S16SYS);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   557
    CHECK_FMT_STRING(U16);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   558
    CHECK_FMT_STRING(S16);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   559
    CHECK_FMT_STRING(S32LSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   560
    CHECK_FMT_STRING(S32MSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   561
    CHECK_FMT_STRING(S32SYS);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   562
    CHECK_FMT_STRING(S32);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   563
    CHECK_FMT_STRING(F32LSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   564
    CHECK_FMT_STRING(F32MSB);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   565
    CHECK_FMT_STRING(F32SYS);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   566
    CHECK_FMT_STRING(F32);
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   567
#undef CHECK_FMT_STRING
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   568
    return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   569
}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   570
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   571
int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   572
SDL_GetNumAudioDrivers(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   573
{
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   574
    return (SDL_arraysize(bootstrap) - 1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   575
}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   576
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   577
const char *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   578
SDL_GetAudioDriver(int index)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   579
{
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   580
    if (index >= 0 && index < SDL_GetNumAudioDrivers()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   581
        return (bootstrap[index]->name);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   582
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   583
    return (NULL);
1794
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   584
}
5605a9820134 Fixed bug #137
Sam Lantinga <slouken@libsdl.org>
parents: 1769
diff changeset
   585
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   586
int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   587
SDL_AudioInit(const char *driver_name)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   588
{
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   589
    int i = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   590
    int initialized = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   591
    int tried_to_init = 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   592
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   593
    if (SDL_WasInit(SDL_INIT_AUDIO)) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   594
        SDL_AudioQuit();        /* shutdown driver if already running. */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   595
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   596
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   597
    SDL_memset(&current_audio, '\0', sizeof(current_audio));
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   598
    SDL_memset(open_devices, '\0', sizeof(open_devices));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   599
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   600
    /* Select the proper audio driver */
1909
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
Sam Lantinga <slouken@libsdl.org>
parents: 1903
diff changeset
   601
    if (driver_name == NULL) {
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
Sam Lantinga <slouken@libsdl.org>
parents: 1903
diff changeset
   602
        driver_name = SDL_getenv("SDL_AUDIODRIVER");
8f1ab2f7c722 Look at environment variables in SDL_VideoInit() and SDL_AudioInit()
Sam Lantinga <slouken@libsdl.org>
parents: 1903
diff changeset
   603
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   604
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   605
    for (i = 0; (!initialized) && (bootstrap[i]); ++i) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   606
        /* make sure we should even try this driver before doing so... */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   607
        const AudioBootStrap *backend = bootstrap[i];
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   608
        if (((driver_name) && (SDL_strcasecmp(backend->name, driver_name))) ||
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   609
            ((!driver_name) && (backend->demand_only))) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   610
            continue;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   611
        }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   612
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   613
        tried_to_init = 1;
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   614
        SDL_memset(&current_audio, 0, sizeof(current_audio));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   615
        current_audio.name = backend->name;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   616
        current_audio.desc = backend->desc;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   617
        initialized = backend->init(&current_audio.impl);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   618
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   619
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   620
    if (!initialized) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   621
        /* specific drivers will set the error message if they fail... */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   622
        if (!tried_to_init) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   623
            if (driver_name) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   624
                SDL_SetError("%s not available", driver_name);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   625
            } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   626
                SDL_SetError("No available audio device");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   627
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   628
        }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   629
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   630
        SDL_memset(&current_audio, 0, sizeof(current_audio));
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   631
        return (-1);            /* No driver was available, so fail. */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   632
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   633
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   634
    finalize_audio_entry_points();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   635
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   636
    return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   637
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   638
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   639
/*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   640
 * Get the current audio driver name
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   641
 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   642
const char *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   643
SDL_GetCurrentAudioDriver()
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   644
{
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   645
    return current_audio.name;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   646
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   647
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   648
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   649
int
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   650
SDL_GetNumAudioDevices(int iscapture)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   651
{
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   652
    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   653
        return -1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   654
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   655
    if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   656
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   657
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   658
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   659
    if ((iscapture) && (current_audio.impl.OnlyHasDefaultInputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   660
        return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   661
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   662
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   663
    if ((!iscapture) && (current_audio.impl.OnlyHasDefaultOutputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   664
        return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   665
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   666
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   667
    return current_audio.impl.DetectDevices(iscapture);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   668
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   669
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   670
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   671
const char *
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   672
SDL_GetAudioDeviceName(int index, int iscapture)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   673
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   674
    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   675
        SDL_SetError("Audio subsystem is not initialized");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   676
        return NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   677
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   678
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   679
    if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   680
        SDL_SetError("No capture support");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   681
        return NULL;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   682
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   683
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   684
    if (index < 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   685
        SDL_SetError("No such device");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   686
        return NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   687
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   688
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   689
    if ((iscapture) && (current_audio.impl.OnlyHasDefaultInputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   690
        return DEFAULT_INPUT_DEVNAME;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   691
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   692
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   693
    if ((!iscapture) && (current_audio.impl.OnlyHasDefaultOutputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   694
        return DEFAULT_OUTPUT_DEVNAME;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   695
    }
262
ba5363e21df8 Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
   696
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   697
    return current_audio.impl.GetDeviceName(index, iscapture);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   698
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   699
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   700
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   701
static void
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   702
close_audio_device(SDL_AudioDevice * device)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   703
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   704
    device->enabled = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   705
    if (device->thread != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   706
        SDL_WaitThread(device->thread, NULL);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   707
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   708
    if (device->mixer_lock != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   709
        SDL_DestroyMutex(device->mixer_lock);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   710
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   711
    if (device->fake_stream != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   712
        SDL_FreeAudioMem(device->fake_stream);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   713
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   714
    if (device->convert.needed) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   715
        SDL_FreeAudioMem(device->convert.buf);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   716
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   717
    if (device->opened) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   718
        current_audio.impl.CloseDevice(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   719
        device->opened = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   720
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   721
    SDL_FreeAudioMem(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   722
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   723
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   724
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   725
/*
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   726
 * Sanity check desired AudioSpec for SDL_OpenAudio() in (orig).
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   727
 *  Fills in a sanitized copy in (prepared).
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   728
 *  Returns non-zero if okay, zero on fatal parameters in (orig).
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   729
 */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   730
static int
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   731
prepare_audiospec(const SDL_AudioSpec * orig, SDL_AudioSpec * prepared)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   732
{
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   733
    SDL_memcpy(prepared, orig, sizeof(SDL_AudioSpec));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   734
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   735
    if (orig->callback == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   736
        SDL_SetError("SDL_OpenAudio() passed a NULL callback");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   737
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   738
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   739
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   740
    if (orig->freq == 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   741
        const char *env = SDL_getenv("SDL_AUDIO_FREQUENCY");
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   742
        if ((!env) || ((prepared->freq = SDL_atoi(env)) == 0)) {
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   743
            prepared->freq = 22050;     /* a reasonable default */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   744
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   745
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   746
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   747
    if (orig->format == 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   748
        const char *env = SDL_getenv("SDL_AUDIO_FORMAT");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   749
        if ((!env) || ((prepared->format = SDL_ParseAudioFormat(env)) == 0)) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   750
            prepared->format = AUDIO_S16;       /* a reasonable default */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   751
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   752
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   753
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   754
    switch (orig->channels) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   755
    case 0:{
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   756
            const char *env = SDL_getenv("SDL_AUDIO_CHANNELS");
2141
e1a70460c354 stupid indent
Sam Lantinga <slouken@libsdl.org>
parents: 2130
diff changeset
   757
            if ((!env) || ((prepared->channels = (Uint8) SDL_atoi(env)) == 0)) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   758
                prepared->channels = 2; /* a reasonable default */
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   759
            }
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   760
            break;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   761
        }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   762
    case 1:                    /* Mono */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   763
    case 2:                    /* Stereo */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   764
    case 4:                    /* surround */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   765
    case 6:                    /* surround with center and lfe */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   766
        break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   767
    default:
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   768
        SDL_SetError("Unsupported number of audio channels.");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   769
        return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   770
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   771
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   772
    if (orig->samples == 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   773
        const char *env = SDL_getenv("SDL_AUDIO_SAMPLES");
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   774
        if ((!env) || ((prepared->samples = (Uint16) SDL_atoi(env)) == 0)) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   775
            /* Pick a default of ~46 ms at desired frequency */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   776
            /* !!! FIXME: remove this when the non-Po2 resampling is in. */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   777
            const int samples = (prepared->freq / 1000) * 46;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   778
            int power2 = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   779
            while (power2 < samples) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   780
                power2 *= 2;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   781
            }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   782
            prepared->samples = power2;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   783
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   784
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   785
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   786
    /* Calculate the silence and size of the audio specification */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   787
    SDL_CalculateAudioSpec(prepared);
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   788
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   789
    return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   790
}
1408
ceb5c2fec4f1 Fixed some preprocessor mangling
Sam Lantinga <slouken@libsdl.org>
parents: 1406
diff changeset
   791
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   792
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   793
static SDL_AudioDeviceID
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   794
open_audio_device(const char *devname, int iscapture,
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   795
                  const SDL_AudioSpec * desired, SDL_AudioSpec * obtained,
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   796
                  int allowed_changes, int min_id)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   797
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   798
    SDL_AudioDeviceID id = 0;
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   799
    SDL_AudioSpec _obtained;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   800
    SDL_AudioDevice *device;
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   801
    SDL_bool build_cvt;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   802
    int i = 0;
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   803
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   804
    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   805
        SDL_SetError("Audio subsystem is not initialized");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   806
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   807
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   808
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   809
    if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   810
        SDL_SetError("No capture support");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   811
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   812
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   813
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   814
    if (!obtained) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   815
        obtained = &_obtained;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   816
    }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   817
    if (!prepare_audiospec(desired, obtained)) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   818
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   819
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   820
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   821
    /* If app doesn't care about a specific device, let the user override. */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   822
    if (devname == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   823
        devname = SDL_getenv("SDL_AUDIO_DEVICE_NAME");
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   824
    }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   825
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   826
    /*
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   827
     * Catch device names at the high level for the simple case...
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   828
     * This lets us have a basic "device enumeration" for systems that
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   829
     *  don't have multiple devices, but makes sure the device name is
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   830
     *  always NULL when it hits the low level.
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   831
     *
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   832
     * Also make sure that the simple case prevents multiple simultaneous
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   833
     *  opens of the default system device.
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   834
     */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   835
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   836
    if ((iscapture) && (current_audio.impl.OnlyHasDefaultInputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   837
        if ((devname) && (SDL_strcmp(devname, DEFAULT_INPUT_DEVNAME) != 0)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   838
            SDL_SetError("No such device");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   839
            return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   840
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   841
        devname = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   842
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   843
        for (i = 0; i < SDL_arraysize(open_devices); i++) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   844
            if ((open_devices[i]) && (open_devices[i]->iscapture)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   845
                SDL_SetError("Audio device already open");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   846
                return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   847
            }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   848
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   849
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   850
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   851
    if ((!iscapture) && (current_audio.impl.OnlyHasDefaultOutputDevice)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   852
        if ((devname) && (SDL_strcmp(devname, DEFAULT_OUTPUT_DEVNAME) != 0)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   853
            SDL_SetError("No such device");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   854
            return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   855
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   856
        devname = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   857
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   858
        for (i = 0; i < SDL_arraysize(open_devices); i++) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   859
            if ((open_devices[i]) && (!open_devices[i]->iscapture)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   860
                SDL_SetError("Audio device already open");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   861
                return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   862
            }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   863
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   864
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   865
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   866
    device = (SDL_AudioDevice *) SDL_AllocAudioMem(sizeof(SDL_AudioDevice));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   867
    if (device == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   868
        SDL_OutOfMemory();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   869
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   870
    }
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   871
    SDL_memset(device, '\0', sizeof(SDL_AudioDevice));
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   872
    device->spec = *obtained;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   873
    device->enabled = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   874
    device->paused = 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   875
    device->iscapture = iscapture;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   876
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   877
    /* Create a semaphore for locking the sound buffers */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   878
    if (!current_audio.impl.SkipMixerLock) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   879
        device->mixer_lock = SDL_CreateMutex();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   880
        if (device->mixer_lock == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   881
            close_audio_device(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   882
            SDL_SetError("Couldn't create mixer lock");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   883
            return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   884
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   885
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   886
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   887
    if (!current_audio.impl.OpenDevice(device, devname, iscapture)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   888
        close_audio_device(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   889
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   890
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   891
    device->opened = 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   892
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   893
    /* Allocate a fake audio memory buffer */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   894
    device->fake_stream = SDL_AllocAudioMem(device->spec.size);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   895
    if (device->fake_stream == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   896
        close_audio_device(device);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   897
        SDL_OutOfMemory();
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   898
        return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   899
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   900
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   901
    /* If the audio driver changes the buffer size, accept it */
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   902
    if (device->spec.samples != obtained->samples) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   903
        obtained->samples = device->spec.samples;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   904
        SDL_CalculateAudioSpec(obtained);
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   905
    }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   906
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   907
    /* See if we need to do any conversion */
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   908
    build_cvt = SDL_FALSE;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   909
    if (obtained->freq != device->spec.freq) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   910
        if (allowed_changes & SDL_AUDIO_ALLOW_FREQUENCY_CHANGE) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   911
            obtained->freq = device->spec.freq;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   912
        } else {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   913
            build_cvt = SDL_TRUE;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   914
        }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   915
    }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   916
    if (obtained->format != device->spec.format) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   917
        if (allowed_changes & SDL_AUDIO_ALLOW_FORMAT_CHANGE) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   918
            obtained->format = device->spec.format;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   919
        } else {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   920
            build_cvt = SDL_TRUE;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   921
        }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   922
    }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   923
    if (obtained->channels != device->spec.channels) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   924
        if (allowed_changes & SDL_AUDIO_ALLOW_CHANNELS_CHANGE) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   925
            obtained->channels = device->spec.channels;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   926
        } else {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   927
            build_cvt = SDL_TRUE;
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   928
        }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   929
    }
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   930
    if (build_cvt) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   931
        /* Build an audio conversion block */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   932
        if (SDL_BuildAudioCVT(&device->convert,
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   933
                              obtained->format, obtained->channels,
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   934
                              obtained->freq,
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   935
                              device->spec.format, device->spec.channels,
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   936
                              device->spec.freq) < 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   937
            close_audio_device(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   938
            return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   939
        }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   940
        if (device->convert.needed) {
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   941
            device->convert.len = (int) (((double) obtained->size) /
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   942
                                         device->convert.len_ratio);
2053
716cf90f24a0 1.3 branch version of revision 2878.
Ryan C. Gordon <icculus@icculus.org>
parents: 2049
diff changeset
   943
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   944
            device->convert.buf =
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   945
                (Uint8 *) SDL_AllocAudioMem(device->convert.len *
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   946
                                            device->convert.len_mult);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   947
            if (device->convert.buf == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   948
                close_audio_device(device);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   949
                SDL_OutOfMemory();
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   950
                return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   951
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   952
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   953
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   954
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   955
    /* Find an available device ID and store the structure... */
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   956
    for (id = min_id - 1; id < SDL_arraysize(open_devices); id++) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   957
        if (open_devices[id] == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   958
            open_devices[id] = device;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   959
            break;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   960
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   961
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   962
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   963
    if (id == SDL_arraysize(open_devices)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   964
        SDL_SetError("Too many open audio devices");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   965
        close_audio_device(device);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   966
        return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   967
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   968
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   969
    /* Start the audio thread if necessary */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   970
    if (!current_audio.impl.ProvidesOwnCallbackThread) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   971
        /* Start the audio thread */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   972
/* !!! FIXME: this is nasty. */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1379
diff changeset
   973
#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
   974
#undef SDL_CreateThread
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   975
        device->thread = SDL_CreateThread(SDL_RunAudio, device, NULL, NULL);
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
   976
#else
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   977
        device->thread = SDL_CreateThread(SDL_RunAudio, device);
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
   978
#endif
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   979
        if (device->thread == NULL) {
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   980
            SDL_CloseAudioDevice(id + 1);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   981
            SDL_SetError("Couldn't create audio thread");
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   982
            return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   983
        }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   984
    }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   985
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
   986
    return id + 1;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   987
}
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   988
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   989
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   990
int
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   991
SDL_OpenAudio(SDL_AudioSpec * desired, SDL_AudioSpec * obtained)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   992
{
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   993
    SDL_AudioDeviceID id = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   994
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   995
    /* Start up the audio driver, if necessary. This is legacy behaviour! */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   996
    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
   997
        if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   998
            return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
   999
        }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1000
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
  1001
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1002
    /* SDL_OpenAudio() is legacy and can only act on Device ID #1. */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1003
    if (open_devices[0] != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1004
        SDL_SetError("Audio device is already opened");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1005
        return (-1);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1006
    }
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1007
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1008
    if (obtained) {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1009
        id = open_audio_device(NULL, 0, desired, obtained,
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1010
                               SDL_AUDIO_ALLOW_ANY_CHANGE, 1);
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1011
    } else {
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1012
        id = open_audio_device(NULL, 0, desired, desired, 0, 1);
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1013
    }
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
  1014
    if (id > 1) {               /* this should never happen in theory... */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1015
        SDL_CloseAudioDevice(id);
2060
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2053
diff changeset
  1016
        SDL_SetError("Internal error"); /* MUST be Device ID #1! */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1017
        return (-1);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1018
    }
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
  1019
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1020
    return ((id == 0) ? -1 : 0);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1021
}
21
75a95f82bc1f Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
  1022
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1023
SDL_AudioDeviceID
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1024
SDL_OpenAudioDevice(const char *device, int iscapture,
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1025
                    const SDL_AudioSpec * desired, SDL_AudioSpec * obtained,
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1026
                    int allowed_changes)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1027
{
2866
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1028
    return open_audio_device(device, iscapture, desired, obtained,
e532417a6977 Fixed SDL 1.2 compatibility problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
  1029
                             allowed_changes, 2);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1030
}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1031
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1032
SDL_audiostatus
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1033
SDL_GetAudioDeviceStatus(SDL_AudioDeviceID devid)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1034
{
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1035
    SDL_AudioDevice *device = get_audio_device(devid);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1036
    SDL_audiostatus status = SDL_AUDIO_STOPPED;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1037
    if (device && device->enabled) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff changeset
  1038
        if (device->paused) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1039
            status = SDL_AUDIO_PAUSED;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1040
        } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1041
            status = SDL_AUDIO_PLAYING;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1042
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1043
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1794
diff changeset
  1044
    return (status);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
  1045
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
  1046
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2045
diff