author | Sam Lantinga <slouken@libsdl.org> |
Tue, 21 Mar 2006 06:45:47 +0000 | |
changeset 1562 | 1d487a3fab41 |
parent 1561 | c724c4a99759 |
child 1567 | 12b6d331d82a |
permissions | -rw-r--r-- |
0 | 1 |
/* |
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SDL - Simple DirectMedia Layer |
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Copyright (C) 1997-2006 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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#ifdef __OS2__ |
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/* We'll need the DosSetPriority() API! */ |
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#define INCL_DOSPROCESS |
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#include <os2.h> |
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#endif |
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/* Available audio drivers */ |
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static AudioBootStrap *bootstrap[] = { |
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#if SDL_AUDIO_DRIVER_OPENBSD |
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&OPENBSD_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_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_WAVEOUT |
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&WAVEOUT_bootstrap, |
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#endif |
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#if SDL_AUDIO_DRIVER_PAUD |
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&Paud_bootstrap, |
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#endif |
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#if SDL_AUDIO_DRIVER_BAUDIO |
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&BAUDIO_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_SNDMGR |
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&SNDMGR_bootstrap, |
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#endif |
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#if SDL_AUDIO_DRIVER_AHI |
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&AHI_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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NULL |
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}; |
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SDL_AudioDevice *current_audio = NULL; |
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/* Various local functions */ |
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int SDL_AudioInit(const char *driver_name); |
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void SDL_AudioQuit(void); |
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#if SDL_AUDIO_DRIVER_AHI |
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static int audio_configured = 0; |
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#endif |
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/* The general mixing thread function */ |
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int SDL_RunAudio(void *audiop) |
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{ |
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SDL_AudioDevice *audio = (SDL_AudioDevice *)audiop; |
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Uint8 *stream; |
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int stream_len; |
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void *udata; |
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void (*fill)(void *userdata,Uint8 *stream, int len); |
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int silence; |
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#if SDL_AUDIO_DRIVER_AHI |
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int started = 0; |
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/* AmigaOS NEEDS that the audio driver is opened in the thread that uses it! */ |
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D(bug("Task audio started audio struct:<%lx>...\n",audiop)); |
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D(bug("Before Openaudio...")); |
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if(audio->OpenAudio(audio, &audio->spec)==-1) |
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{ |
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D(bug("Open audio failed...\n")); |
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return(-1); |
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} |
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D(bug("OpenAudio...OK\n")); |
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#endif |
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/* Perform any thread setup */ |
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148 |
if ( audio->ThreadInit ) { |
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149 |
audio->ThreadInit(audio); |
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} |
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audio->threadid = SDL_ThreadID(); |
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/* Set up the mixing function */ |
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fill = audio->spec.callback; |
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udata = audio->spec.userdata; |
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#if SDL_AUDIO_DRIVER_AHI |
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audio_configured = 1; |
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D(bug("Audio configured... Checking for conversion\n")); |
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SDL_mutexP(audio->mixer_lock); |
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D(bug("Semaphore obtained...\n")); |
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#endif |
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if ( audio->convert.needed ) { |
166 |
if ( audio->convert.src_format == AUDIO_U8 ) { |
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167 |
silence = 0x80; |
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168 |
} else { |
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169 |
silence = 0; |
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170 |
} |
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171 |
stream_len = audio->convert.len; |
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172 |
} else { |
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173 |
silence = audio->spec.silence; |
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174 |
stream_len = audio->spec.size; |
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175 |
} |
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Try to fill the hardware audio buffer immediately.
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changeset
|
176 |
|
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|
177 |
#if SDL_AUDIO_DRIVER_AHI |
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|
178 |
SDL_mutexV(audio->mixer_lock); |
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|
179 |
D(bug("Entering audio loop...\n")); |
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|
180 |
#endif |
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|
181 |
|
1190 | 182 |
#ifdef __OS2__ |
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|
183 |
/* Increase the priority of this thread to make sure that |
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|
184 |
the audio will be continuous all the time! */ |
1190 | 185 |
#ifdef USE_DOSSETPRIORITY |
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|
186 |
if (SDL_getenv("SDL_USE_TIMECRITICAL_AUDIO")) |
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|
187 |
{ |
1190 | 188 |
#ifdef DEBUG_BUILD |
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|
189 |
printf("[SDL_RunAudio] : Setting priority to TimeCritical+0! (TID%d)\n", SDL_ThreadID()); |
1190 | 190 |
#endif |
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|
191 |
DosSetPriority(PRTYS_THREAD, PRTYC_TIMECRITICAL, 0, 0); |
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|
192 |
} |
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|
193 |
else |
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|
194 |
{ |
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|
195 |
#ifdef DEBUG_BUILD |
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|
196 |
printf("[SDL_RunAudio] : Setting priority to ForegroundServer+0! (TID%d)\n", SDL_ThreadID()); |
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|
197 |
#endif |
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|
198 |
DosSetPriority(PRTYS_THREAD, PRTYC_FOREGROUNDSERVER, 0, 0); |
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|
199 |
} |
1190 | 200 |
#endif |
201 |
#endif |
|
21
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|
202 |
|
0 | 203 |
/* Loop, filling the audio buffers */ |
204 |
while ( audio->enabled ) { |
|
205 |
||
206 |
/* Fill the current buffer with sound */ |
|
207 |
if ( audio->convert.needed ) { |
|
208 |
if ( audio->convert.buf ) { |
|
209 |
stream = audio->convert.buf; |
|
210 |
} else { |
|
211 |
continue; |
|
212 |
} |
|
213 |
} else { |
|
214 |
stream = audio->GetAudioBuf(audio); |
|
215 |
if ( stream == NULL ) { |
|
216 |
stream = audio->fake_stream; |
|
217 |
} |
|
218 |
} |
|
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|
219 |
SDL_memset(stream, silence, stream_len); |
0 | 220 |
|
221 |
if ( ! audio->paused ) { |
|
222 |
SDL_mutexP(audio->mixer_lock); |
|
223 |
(*fill)(udata, stream, stream_len); |
|
224 |
SDL_mutexV(audio->mixer_lock); |
|
225 |
} |
|
226 |
||
227 |
/* Convert the audio if necessary */ |
|
228 |
if ( audio->convert.needed ) { |
|
229 |
SDL_ConvertAudio(&audio->convert); |
|
230 |
stream = audio->GetAudioBuf(audio); |
|
231 |
if ( stream == NULL ) { |
|
232 |
stream = audio->fake_stream; |
|
233 |
} |
|
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|
234 |
SDL_memcpy(stream, audio->convert.buf, |
0 | 235 |
audio->convert.len_cvt); |
236 |
} |
|
237 |
||
238 |
/* Ready current buffer for play and change current buffer */ |
|
239 |
if ( stream != audio->fake_stream ) { |
|
240 |
audio->PlayAudio(audio); |
|
1562 | 241 |
} |
242 |
||
243 |
/* Wait for an audio buffer to become available */ |
|
244 |
if ( stream == audio->fake_stream ) { |
|
245 |
SDL_Delay((audio->spec.samples*1000)/audio->spec.freq); |
|
246 |
} else { |
|
247 |
audio->WaitAudio(audio); |
|
0 | 248 |
} |
249 |
} |
|
1562 | 250 |
|
0 | 251 |
/* Wait for the audio to drain.. */ |
252 |
if ( audio->WaitDone ) { |
|
253 |
audio->WaitDone(audio); |
|
254 |
} |
|
21
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|
255 |
|
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|
256 |
#if SDL_AUDIO_DRIVER_AHI |
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|
257 |
D(bug("WaitAudio...Done\n")); |
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|
258 |
|
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Updated the Amiga OS port of SDL (thanks Gabriele)
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|
259 |
audio->CloseAudio(audio); |
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|
260 |
|
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|
261 |
D(bug("CloseAudio..Done, subtask exiting...\n")); |
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|
262 |
audio_configured = 0; |
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parents:
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diff
changeset
|
263 |
#endif |
1190 | 264 |
#ifdef __OS2__ |
265 |
#ifdef DEBUG_BUILD |
|
266 |
printf("[SDL_RunAudio] : Task exiting. (TID%d)\n", SDL_ThreadID()); |
|
267 |
#endif |
|
268 |
#endif |
|
0 | 269 |
return(0); |
270 |
} |
|
271 |
||
322
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|
272 |
static void SDL_LockAudio_Default(SDL_AudioDevice *audio) |
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|
273 |
{ |
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parents:
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diff
changeset
|
274 |
if ( audio->thread && (SDL_ThreadID() == audio->threadid) ) { |
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changeset
|
275 |
return; |
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The audio lock and unlock functions are now a part of the driver.
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parents:
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changeset
|
276 |
} |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
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parents:
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diff
changeset
|
277 |
SDL_mutexP(audio->mixer_lock); |
fd93a09655e3
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parents:
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diff
changeset
|
278 |
} |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
279 |
|
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
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parents:
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diff
changeset
|
280 |
static void SDL_UnlockAudio_Default(SDL_AudioDevice *audio) |
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The audio lock and unlock functions are now a part of the driver.
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parents:
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diff
changeset
|
281 |
{ |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
282 |
if ( audio->thread && (SDL_ThreadID() == audio->threadid) ) { |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
283 |
return; |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
284 |
} |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
285 |
SDL_mutexV(audio->mixer_lock); |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
286 |
} |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
287 |
|
0 | 288 |
int SDL_AudioInit(const char *driver_name) |
289 |
{ |
|
290 |
SDL_AudioDevice *audio; |
|
291 |
int i = 0, idx; |
|
292 |
||
293 |
/* Check to make sure we don't overwrite 'current_audio' */ |
|
294 |
if ( current_audio != NULL ) { |
|
295 |
SDL_AudioQuit(); |
|
296 |
} |
|
297 |
||
298 |
/* Select the proper audio driver */ |
|
299 |
audio = NULL; |
|
300 |
idx = 0; |
|
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
|
301 |
#if SDL_AUDIO_DRIVER_ESD |
1336
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Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
302 |
if ( (driver_name == NULL) && (SDL_getenv("ESPEAKER") != NULL) ) { |
0 | 303 |
/* Ahem, we know that if ESPEAKER is set, user probably wants |
304 |
to use ESD, but don't start it if it's not already running. |
|
305 |
This probably isn't the place to do this, but... Shh! :) |
|
306 |
*/ |
|
307 |
for ( i=0; bootstrap[i]; ++i ) { |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
308 |
if ( SDL_strcmp(bootstrap[i]->name, "esd") == 0 ) { |
1341
d02b552e5304
Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents:
1336
diff
changeset
|
309 |
#ifdef HAVE_PUTENV |
0 | 310 |
const char *esd_no_spawn; |
311 |
||
312 |
/* Don't start ESD if it's not running */ |
|
1341
d02b552e5304
Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents:
1336
diff
changeset
|
313 |
esd_no_spawn = getenv("ESD_NO_SPAWN"); |
0 | 314 |
if ( esd_no_spawn == NULL ) { |
315 |
putenv("ESD_NO_SPAWN=1"); |
|
316 |
} |
|
1341
d02b552e5304
Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents:
1336
diff
changeset
|
317 |
#endif |
0 | 318 |
if ( bootstrap[i]->available() ) { |
319 |
audio = bootstrap[i]->create(0); |
|
320 |
break; |
|
321 |
} |
|
1341
d02b552e5304
Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents:
1336
diff
changeset
|
322 |
#ifdef HAVE_UNSETENV |
0 | 323 |
if ( esd_no_spawn == NULL ) { |
324 |
unsetenv("ESD_NO_SPAWN"); |
|
325 |
} |
|
326 |
#endif |
|
327 |
} |
|
328 |
} |
|
329 |
} |
|
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
|
330 |
#endif /* SDL_AUDIO_DRIVER_ESD */ |
0 | 331 |
if ( audio == NULL ) { |
332 |
if ( driver_name != NULL ) { |
|
333 |
#if 0 /* This will be replaced with a better driver selection API */ |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
334 |
if ( SDL_strrchr(driver_name, ':') != NULL ) { |
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
335 |
idx = atoi(SDL_strrchr(driver_name, ':')+1); |
0 | 336 |
} |
337 |
#endif |
|
338 |
for ( i=0; bootstrap[i]; ++i ) { |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
339 |
if (SDL_strncmp(bootstrap[i]->name, driver_name, |
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
340 |
SDL_strlen(bootstrap[i]->name)) == 0) { |
0 | 341 |
if ( bootstrap[i]->available() ) { |
342 |
audio=bootstrap[i]->create(idx); |
|
343 |
break; |
|
344 |
} |
|
345 |
} |
|
346 |
} |
|
347 |
} else { |
|
348 |
for ( i=0; bootstrap[i]; ++i ) { |
|
349 |
if ( bootstrap[i]->available() ) { |
|
350 |
audio = bootstrap[i]->create(idx); |
|
351 |
if ( audio != NULL ) { |
|
352 |
break; |
|
353 |
} |
|
354 |
} |
|
355 |
} |
|
356 |
} |
|
357 |
if ( audio == NULL ) { |
|
358 |
SDL_SetError("No available audio device"); |
|
359 |
#if 0 /* Don't fail SDL_Init() if audio isn't available. |
|
360 |
SDL_OpenAudio() will handle it at that point. *sigh* |
|
361 |
*/ |
|
362 |
return(-1); |
|
363 |
#endif |
|
364 |
} |
|
365 |
} |
|
366 |
current_audio = audio; |
|
367 |
if ( current_audio ) { |
|
368 |
current_audio->name = bootstrap[i]->name; |
|
322
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
369 |
if ( !current_audio->LockAudio && !current_audio->UnlockAudio ) { |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
370 |
current_audio->LockAudio = SDL_LockAudio_Default; |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
371 |
current_audio->UnlockAudio = SDL_UnlockAudio_Default; |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
372 |
} |
0 | 373 |
} |
374 |
return(0); |
|
375 |
} |
|
376 |
||
377 |
char *SDL_AudioDriverName(char *namebuf, int maxlen) |
|
378 |
{ |
|
379 |
if ( current_audio != NULL ) { |
|
1379
c0a74f199ecf
Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents:
1361
diff
changeset
|
380 |
SDL_strlcpy(namebuf, current_audio->name, maxlen); |
0 | 381 |
return(namebuf); |
382 |
} |
|
383 |
return(NULL); |
|
384 |
} |
|
385 |
||
386 |
int SDL_OpenAudio(SDL_AudioSpec *desired, SDL_AudioSpec *obtained) |
|
387 |
{ |
|
388 |
SDL_AudioDevice *audio; |
|
389 |
||
390 |
/* Start up the audio driver, if necessary */ |
|
391 |
if ( ! current_audio ) { |
|
392 |
if ( (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) || |
|
393 |
(current_audio == NULL) ) { |
|
394 |
return(-1); |
|
395 |
} |
|
396 |
} |
|
397 |
audio = current_audio; |
|
398 |
||
262
ba5363e21df8
Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
399 |
if (audio->opened) { |
ba5363e21df8
Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
400 |
SDL_SetError("Audio device is already opened"); |
ba5363e21df8
Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
401 |
return(-1); |
ba5363e21df8
Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
402 |
} |
ba5363e21df8
Don't allow multiple audio opens to succeed (until SDL 1.3)
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
403 |
|
0 | 404 |
/* Verify some parameters */ |
405 |
if ( desired->callback == NULL ) { |
|
406 |
SDL_SetError("SDL_OpenAudio() passed a NULL callback"); |
|
407 |
return(-1); |
|
408 |
} |
|
409 |
switch ( desired->channels ) { |
|
410 |
case 1: /* Mono */ |
|
411 |
case 2: /* Stereo */ |
|
942
41a59de7f2ed
Here are patches for SDL12 and SDL_mixer for 4 or 6 channel
Sam Lantinga <slouken@libsdl.org>
parents:
936
diff
changeset
|
412 |
case 4: /* surround */ |
41a59de7f2ed
Here are patches for SDL12 and SDL_mixer for 4 or 6 channel
Sam Lantinga <slouken@libsdl.org>
parents:
936
diff
changeset
|
413 |
case 6: /* surround with center and lfe */ |
0 | 414 |
break; |
415 |
default: |
|
416 |
SDL_SetError("1 (mono) and 2 (stereo) channels supported"); |
|
417 |
return(-1); |
|
418 |
} |
|
419 |
||
1402
d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents:
1379
diff
changeset
|
420 |
#if defined(__MACOS__) || (defined(__RISCOS__) && SDL_THREADS_DISABLED) |
0 | 421 |
/* FIXME: Need to implement PPC interrupt asm for SDL_LockAudio() */ |
422 |
#else |
|
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
|
423 |
#if defined(__MINT__) && SDL_THREADS_DISABLED |
398
d219b0e02f5f
Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
322
diff
changeset
|
424 |
/* Uses interrupt driven audio, without thread */ |
d219b0e02f5f
Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
322
diff
changeset
|
425 |
#else |
0 | 426 |
/* Create a semaphore for locking the sound buffers */ |
427 |
audio->mixer_lock = SDL_CreateMutex(); |
|
428 |
if ( audio->mixer_lock == NULL ) { |
|
429 |
SDL_SetError("Couldn't create mixer lock"); |
|
430 |
SDL_CloseAudio(); |
|
431 |
return(-1); |
|
432 |
} |
|
398
d219b0e02f5f
Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
322
diff
changeset
|
433 |
#endif /* __MINT__ */ |
1402
d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents:
1379
diff
changeset
|
434 |
#endif /* __MACOS__ */ |
0 | 435 |
|
436 |
/* Calculate the silence and size of the audio specification */ |
|
437 |
SDL_CalculateAudioSpec(desired); |
|
438 |
||
439 |
/* Open the audio subsystem */ |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
440 |
SDL_memcpy(&audio->spec, desired, sizeof(audio->spec)); |
0 | 441 |
audio->convert.needed = 0; |
442 |
audio->enabled = 1; |
|
443 |
audio->paused = 1; |
|
21
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
444 |
|
1406
39ca9a4b22f3
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
445 |
#if !SDL_AUDIO_DRIVER_AHI |
21
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
446 |
|
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
447 |
/* AmigaOS opens audio inside the main loop */ |
0 | 448 |
audio->opened = audio->OpenAudio(audio, &audio->spec)+1; |
21
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
449 |
|
0 | 450 |
if ( ! audio->opened ) { |
451 |
SDL_CloseAudio(); |
|
452 |
return(-1); |
|
453 |
} |
|
21
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
454 |
#else |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
455 |
D(bug("Locking semaphore...")); |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
456 |
SDL_mutexP(audio->mixer_lock); |
1408
ceb5c2fec4f1
Fixed some preprocessor mangling
Sam Lantinga <slouken@libsdl.org>
parents:
1406
diff
changeset
|
457 |
|
21
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
458 |
|
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
459 |
audio->thread = SDL_CreateThread(SDL_RunAudio, audio); |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
460 |
D(bug("Created thread...\n")); |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
461 |
|
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
462 |
if ( audio->thread == NULL ) { |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
463 |
SDL_mutexV(audio->mixer_lock); |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
464 |
SDL_CloseAudio(); |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
465 |
SDL_SetError("Couldn't create audio thread"); |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
466 |
return(-1); |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
467 |
} |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
468 |
|
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
469 |
while(!audio_configured) |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
470 |
SDL_Delay(100); |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
471 |
#endif |
0 | 472 |
|
473 |
/* If the audio driver changes the buffer size, accept it */ |
|
474 |
if ( audio->spec.samples != desired->samples ) { |
|
475 |
desired->samples = audio->spec.samples; |
|
476 |
SDL_CalculateAudioSpec(desired); |
|
477 |
} |
|
478 |
||
479 |
/* Allocate a fake audio memory buffer */ |
|
480 |
audio->fake_stream = SDL_AllocAudioMem(audio->spec.size); |
|
481 |
if ( audio->fake_stream == NULL ) { |
|
482 |
SDL_CloseAudio(); |
|
483 |
SDL_OutOfMemory(); |
|
484 |
return(-1); |
|
485 |
} |
|
486 |
||
487 |
/* See if we need to do any conversion */ |
|
808
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
488 |
if ( obtained != NULL ) { |
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
489 |
SDL_memcpy(obtained, &audio->spec, sizeof(audio->spec)); |
808
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
490 |
} else if ( desired->freq != audio->spec.freq || |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
491 |
desired->format != audio->spec.format || |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
492 |
desired->channels != audio->spec.channels ) { |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
493 |
/* Build an audio conversion block */ |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
494 |
if ( SDL_BuildAudioCVT(&audio->convert, |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
495 |
desired->format, desired->channels, |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
496 |
desired->freq, |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
497 |
audio->spec.format, audio->spec.channels, |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
498 |
audio->spec.freq) < 0 ) { |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
499 |
SDL_CloseAudio(); |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
500 |
return(-1); |
0 | 501 |
} |
808
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
502 |
if ( audio->convert.needed ) { |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
503 |
audio->convert.len = desired->size; |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
504 |
audio->convert.buf =(Uint8 *)SDL_AllocAudioMem( |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
505 |
audio->convert.len*audio->convert.len_mult); |
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
506 |
if ( audio->convert.buf == NULL ) { |
0 | 507 |
SDL_CloseAudio(); |
808
0defd90ef27c
Simplify code and clean up Valgrind warning
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
508 |
SDL_OutOfMemory(); |
0 | 509 |
return(-1); |
510 |
} |
|
511 |
} |
|
512 |
} |
|
513 |
||
1406
39ca9a4b22f3
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
514 |
#if !SDL_AUDIO_DRIVER_AHI |
0 | 515 |
/* Start the audio thread if necessary */ |
516 |
switch (audio->opened) { |
|
517 |
case 1: |
|
518 |
/* Start the audio thread */ |
|
1402
d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents:
1379
diff
changeset
|
519 |
#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
|
520 |
#undef SDL_CreateThread |
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
521 |
audio->thread = SDL_CreateThread(SDL_RunAudio, audio, NULL, NULL); |
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
522 |
#else |
0 | 523 |
audio->thread = SDL_CreateThread(SDL_RunAudio, audio); |
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
524 |
#endif |
0 | 525 |
if ( audio->thread == NULL ) { |
526 |
SDL_CloseAudio(); |
|
527 |
SDL_SetError("Couldn't create audio thread"); |
|
528 |
return(-1); |
|
529 |
} |
|
530 |
break; |
|
531 |
||
532 |
default: |
|
533 |
/* The audio is now playing */ |
|
534 |
break; |
|
535 |
} |
|
21
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
536 |
#else |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
537 |
SDL_mutexV(audio->mixer_lock); |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
538 |
D(bug("SDL_OpenAudio USCITA...\n")); |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
539 |
|
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
540 |
#endif |
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
541 |
|
0 | 542 |
return(0); |
543 |
} |
|
544 |
||
545 |
SDL_audiostatus SDL_GetAudioStatus(void) |
|
546 |
{ |
|
547 |
SDL_AudioDevice *audio = current_audio; |
|
548 |
SDL_audiostatus status; |
|
549 |
||
550 |
status = SDL_AUDIO_STOPPED; |
|
551 |
if ( audio && audio->enabled ) { |
|
552 |
if ( audio->paused ) { |
|
553 |
status = SDL_AUDIO_PAUSED; |
|
554 |
} else { |
|
555 |
status = SDL_AUDIO_PLAYING; |
|
556 |
} |
|
557 |
} |
|
558 |
return(status); |
|
559 |
} |
|
560 |
||
561 |
void SDL_PauseAudio (int pause_on) |
|
562 |
{ |
|
563 |
SDL_AudioDevice *audio = current_audio; |
|
564 |
||
565 |
if ( audio ) { |
|
566 |
audio->paused = pause_on; |
|
567 |
} |
|
568 |
} |
|
569 |
||
570 |
void SDL_LockAudio (void) |
|
571 |
{ |
|
572 |
SDL_AudioDevice *audio = current_audio; |
|
573 |
||
574 |
/* Obtain a lock on the mixing buffers */ |
|
322
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
575 |
if ( audio && audio->LockAudio ) { |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
576 |
audio->LockAudio(audio); |
0 | 577 |
} |
578 |
} |
|
579 |
||
580 |
void SDL_UnlockAudio (void) |
|
581 |
{ |
|
582 |
SDL_AudioDevice *audio = current_audio; |
|
583 |
||
584 |
/* Release lock on the mixing buffers */ |
|
322
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
585 |
if ( audio && audio->UnlockAudio ) { |
fd93a09655e3
The audio lock and unlock functions are now a part of the driver.
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
586 |
audio->UnlockAudio(audio); |
0 | 587 |
} |
588 |
} |
|
589 |
||
590 |
void SDL_CloseAudio (void) |
|
591 |
{ |
|
592 |
SDL_QuitSubSystem(SDL_INIT_AUDIO); |
|
593 |
} |
|
594 |
||
595 |
void SDL_AudioQuit(void) |
|
596 |
{ |
|
597 |
SDL_AudioDevice *audio = current_audio; |
|
598 |
||
599 |
if ( audio ) { |
|
600 |
audio->enabled = 0; |
|
601 |
if ( audio->thread != NULL ) { |
|
602 |
SDL_WaitThread(audio->thread, NULL); |
|
603 |
} |
|
604 |
if ( audio->mixer_lock != NULL ) { |
|
605 |
SDL_DestroyMutex(audio->mixer_lock); |
|
606 |
} |
|
607 |
if ( audio->fake_stream != NULL ) { |
|
608 |
SDL_FreeAudioMem(audio->fake_stream); |
|
609 |
} |
|
610 |
if ( audio->convert.needed ) { |
|
611 |
SDL_FreeAudioMem(audio->convert.buf); |
|
21
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
612 |
|
0 | 613 |
} |
1406
39ca9a4b22f3
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
614 |
#if !SDL_AUDIO_DRIVER_AHI |
0 | 615 |
if ( audio->opened ) { |
616 |
audio->CloseAudio(audio); |
|
617 |
audio->opened = 0; |
|
618 |
} |
|
21
75a95f82bc1f
Updated the Amiga OS port of SDL (thanks Gabriele)
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
619 |
#endif |
0 | 620 |
/* Free the driver data */ |
621 |
audio->free(audio); |
|
622 |
current_audio = NULL; |
|
623 |
} |
|
624 |
} |
|
625 |
||
626 |
#define NUM_FORMATS 6 |
|
627 |
static int format_idx; |
|
628 |
static int format_idx_sub; |
|
629 |
static Uint16 format_list[NUM_FORMATS][NUM_FORMATS] = { |
|
630 |
{ AUDIO_U8, AUDIO_S8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB }, |
|
631 |
{ AUDIO_S8, AUDIO_U8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB }, |
|
632 |
{ AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_U8, AUDIO_S8 }, |
|
633 |
{ AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8, AUDIO_S8 }, |
|
634 |
{ AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U8, AUDIO_S8 }, |
|
635 |
{ AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U8, AUDIO_S8 }, |
|
636 |
}; |
|
637 |
||
638 |
Uint16 SDL_FirstAudioFormat(Uint16 format) |
|
639 |
{ |
|
640 |
for ( format_idx=0; format_idx < NUM_FORMATS; ++format_idx ) { |
|
641 |
if ( format_list[format_idx][0] == format ) { |
|
642 |
break; |
|
643 |
} |
|
644 |
} |
|
645 |
format_idx_sub = 0; |
|
646 |
return(SDL_NextAudioFormat()); |
|
647 |
} |
|
648 |
||
649 |
Uint16 SDL_NextAudioFormat(void) |
|
650 |
{ |
|
651 |
if ( (format_idx == NUM_FORMATS) || (format_idx_sub == NUM_FORMATS) ) { |
|
652 |
return(0); |
|
653 |
} |
|
654 |
return(format_list[format_idx][format_idx_sub++]); |
|
655 |
} |
|
656 |
||
657 |
void SDL_CalculateAudioSpec(SDL_AudioSpec *spec) |
|
658 |
{ |
|
659 |
switch (spec->format) { |
|
660 |
case AUDIO_U8: |
|
661 |
spec->silence = 0x80; |
|
662 |
break; |
|
663 |
default: |
|
664 |
spec->silence = 0x00; |
|
665 |
break; |
|
666 |
} |
|
667 |
spec->size = (spec->format&0xFF)/8; |
|
668 |
spec->size *= spec->channels; |
|
669 |
spec->size *= spec->samples; |
|
670 |
} |