19682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* 29682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL - Simple DirectMedia Layer 39682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Copyright (C) 1997-2012 Sam Lantinga 49682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 59682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is free software; you can redistribute it and/or 69682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall modify it under the terms of the GNU Lesser General Public 79682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License as published by the Free Software Foundation; either 89682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall version 2.1 of the License, or (at your option) any later version. 99682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is distributed in the hope that it will be useful, 119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall but WITHOUT ANY WARRANTY; without even the implied warranty of 129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Lesser General Public License for more details. 149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall You should have received a copy of the GNU Lesser General Public 169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License along with this library; if not, write to the Free Software 179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Sam Lantinga 209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall slouken@libsdl.org 219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall*/ 229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_config.h" 239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Allow access to a raw mixing buffer */ 259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL.h" 279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_audio_c.h" 289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_audiomem.h" 299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_sysaudio.h" 309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef __OS2__ 329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* We'll need the DosSetPriority() API! */ 339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define INCL_DOSPROCESS 349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include <os2.h> 359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Available audio drivers */ 389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic AudioBootStrap *bootstrap[] = { 399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_PULSE 409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &PULSE_bootstrap, 419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_ALSA 439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &ALSA_bootstrap, 449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_BSD 469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &BSD_AUDIO_bootstrap, 479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_OSS 499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &DSP_bootstrap, 509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &DMA_bootstrap, 519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_QNXNTO 539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &QNXNTOAUDIO_bootstrap, 549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_SUNAUDIO 569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &SUNAUDIO_bootstrap, 579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_DMEDIA 599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &DMEDIA_bootstrap, 609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_ARTS 629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &ARTS_bootstrap, 639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_ESD 659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &ESD_bootstrap, 669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_NAS 689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &NAS_bootstrap, 699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_DSOUND 719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &DSOUND_bootstrap, 729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_WAVEOUT 749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &WAVEOUT_bootstrap, 759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_PAUD 779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &Paud_bootstrap, 789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_BAUDIO 809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &BAUDIO_bootstrap, 819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_COREAUDIO 839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &COREAUDIO_bootstrap, 849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_SNDMGR 869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &SNDMGR_bootstrap, 879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_MINT 899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &MINTAUDIO_GSXB_bootstrap, 909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &MINTAUDIO_MCSN_bootstrap, 919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &MINTAUDIO_STFA_bootstrap, 929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &MINTAUDIO_XBIOS_bootstrap, 939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &MINTAUDIO_DMA8_bootstrap, 949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_DISK 969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &DISKAUD_bootstrap, 979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_DUMMY 999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &DUMMYAUD_bootstrap, 1009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_DC 1029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &DCAUD_bootstrap, 1039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_NDS 1059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &NDSAUD_bootstrap, 1069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_MMEAUDIO 1089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &MMEAUDIO_bootstrap, 1099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_DART 1119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &DART_bootstrap, 1129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_EPOCAUDIO 1149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall &EPOCAudio_bootstrap, 1159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall NULL 1179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall}; 1189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse HallSDL_AudioDevice *current_audio = NULL; 1199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Various local functions */ 1219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint SDL_AudioInit(const char *driver_name); 1229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_AudioQuit(void); 1239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* The general mixing thread function */ 1259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint SDLCALL SDL_RunAudio(void *audiop) 1269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_AudioDevice *audio = (SDL_AudioDevice *)audiop; 1289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Uint8 *stream; 1299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int stream_len; 1309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall void *udata; 1319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall void (SDLCALL *fill)(void *userdata,Uint8 *stream, int len); 1329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int silence; 1339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Perform any thread setup */ 1359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->ThreadInit ) { 1369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->ThreadInit(audio); 1379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->threadid = SDL_ThreadID(); 1399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Set up the mixing function */ 1419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall fill = audio->spec.callback; 1429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall udata = audio->spec.userdata; 1439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->convert.needed ) { 1459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->convert.src_format == AUDIO_U8 ) { 1469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall silence = 0x80; 1479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 1489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall silence = 0; 1499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall stream_len = audio->convert.len; 1519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 1529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall silence = audio->spec.silence; 1539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall stream_len = audio->spec.size; 1549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef __OS2__ 1579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Increase the priority of this thread to make sure that 1589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall the audio will be continuous all the time! */ 1599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef USE_DOSSETPRIORITY 1609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (SDL_getenv("SDL_USE_TIMECRITICAL_AUDIO")) 1619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { 1629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef DEBUG_BUILD 1639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall printf("[SDL_RunAudio] : Setting priority to TimeCritical+0! (TID%d)\n", SDL_ThreadID()); 1649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DosSetPriority(PRTYS_THREAD, PRTYC_TIMECRITICAL, 0, 0); 1669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall else 1689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { 1699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef DEBUG_BUILD 1709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall printf("[SDL_RunAudio] : Setting priority to ForegroundServer+0! (TID%d)\n", SDL_ThreadID()); 1719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DosSetPriority(PRTYS_THREAD, PRTYC_FOREGROUNDSERVER, 0, 0); 1739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Loop, filling the audio buffers */ 1789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall while ( audio->enabled ) { 1799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Fill the current buffer with sound */ 1819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->convert.needed ) { 1829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->convert.buf ) { 1839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall stream = audio->convert.buf; 1849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 1859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall continue; 1869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 1889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall stream = audio->GetAudioBuf(audio); 1899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( stream == NULL ) { 1909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall stream = audio->fake_stream; 1919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_memset(stream, silence, stream_len); 1959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( ! audio->paused ) { 1979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_mutexP(audio->mixer_lock); 1989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall (*fill)(udata, stream, stream_len); 1999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_mutexV(audio->mixer_lock); 2009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Convert the audio if necessary */ 2039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->convert.needed ) { 2049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_ConvertAudio(&audio->convert); 2059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall stream = audio->GetAudioBuf(audio); 2069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( stream == NULL ) { 2079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall stream = audio->fake_stream; 2089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_memcpy(stream, audio->convert.buf, 2109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->convert.len_cvt); 2119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Ready current buffer for play and change current buffer */ 2149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( stream != audio->fake_stream ) { 2159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->PlayAudio(audio); 2169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Wait for an audio buffer to become available */ 2199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( stream == audio->fake_stream ) { 2209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_Delay((audio->spec.samples*1000)/audio->spec.freq); 2219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 2229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->WaitAudio(audio); 2239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Wait for the audio to drain.. */ 2279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->WaitDone ) { 2289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->WaitDone(audio); 2299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef __OS2__ 2329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef DEBUG_BUILD 2339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall printf("[SDL_RunAudio] : Task exiting. (TID%d)\n", SDL_ThreadID()); 2349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 2359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 2369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 2379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 2389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void SDL_LockAudio_Default(SDL_AudioDevice *audio) 2409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 2419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->thread && (SDL_ThreadID() == audio->threadid) ) { 2429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return; 2439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_mutexP(audio->mixer_lock); 2459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 2469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void SDL_UnlockAudio_Default(SDL_AudioDevice *audio) 2489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 2499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->thread && (SDL_ThreadID() == audio->threadid) ) { 2509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return; 2519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_mutexV(audio->mixer_lock); 2539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 2549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic Uint16 SDL_ParseAudioFormat(const char *string) 2569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 2579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Uint16 format = 0; 2589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall switch (*string) { 2609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall case 'U': 2619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall ++string; 2629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall format |= 0x0000; 2639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 2649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall case 'S': 2659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall ++string; 2669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall format |= 0x8000; 2679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 2689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall default: 2699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return 0; 2709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall switch (SDL_atoi(string)) { 2729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall case 8: 2739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall string += 1; 2749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall format |= 8; 2759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 2769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall case 16: 2779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall string += 2; 2789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall format |= 16; 2799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( SDL_strcmp(string, "LSB") == 0 2809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_BYTEORDER == SDL_LIL_ENDIAN 2819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall || SDL_strcmp(string, "SYS") == 0 2829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 2839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall ) { 2849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall format |= 0x0000; 2859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( SDL_strcmp(string, "MSB") == 0 2879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_BYTEORDER == SDL_BIG_ENDIAN 2889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall || SDL_strcmp(string, "SYS") == 0 2899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 2909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall ) { 2919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall format |= 0x1000; 2929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 2949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall default: 2959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return 0; 2969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return format; 2989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 2999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint SDL_AudioInit(const char *driver_name) 3019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 3029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_AudioDevice *audio; 3039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int i = 0, idx; 3049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Check to make sure we don't overwrite 'current_audio' */ 3069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( current_audio != NULL ) { 3079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_AudioQuit(); 3089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Select the proper audio driver */ 3119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio = NULL; 3129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall idx = 0; 3139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_AUDIO_DRIVER_ESD 3149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( (driver_name == NULL) && (SDL_getenv("ESPEAKER") != NULL) ) { 3159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Ahem, we know that if ESPEAKER is set, user probably wants 3169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall to use ESD, but don't start it if it's not already running. 3179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This probably isn't the place to do this, but... Shh! :) 3189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 3199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall for ( i=0; bootstrap[i]; ++i ) { 3209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( SDL_strcasecmp(bootstrap[i]->name, "esd") == 0 ) { 3219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef HAVE_PUTENV 3229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall const char *esd_no_spawn; 3239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Don't start ESD if it's not running */ 3259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall esd_no_spawn = getenv("ESD_NO_SPAWN"); 3269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( esd_no_spawn == NULL ) { 3279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall putenv("ESD_NO_SPAWN=1"); 3289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 3309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( bootstrap[i]->available() ) { 3319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio = bootstrap[i]->create(0); 3329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 3339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef HAVE_UNSETENV 3359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( esd_no_spawn == NULL ) { 3369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall unsetenv("ESD_NO_SPAWN"); 3379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 3399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif /* SDL_AUDIO_DRIVER_ESD */ 3439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio == NULL ) { 3449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( driver_name != NULL ) { 3459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if 0 /* This will be replaced with a better driver selection API */ 3469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( SDL_strrchr(driver_name, ':') != NULL ) { 3479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall idx = atoi(SDL_strrchr(driver_name, ':')+1); 3489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 3509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall for ( i=0; bootstrap[i]; ++i ) { 3519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (SDL_strcasecmp(bootstrap[i]->name, driver_name) == 0) { 3529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( bootstrap[i]->available() ) { 3539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio=bootstrap[i]->create(idx); 3549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 3559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 3599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall for ( i=0; bootstrap[i]; ++i ) { 3609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( bootstrap[i]->available() ) { 3619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio = bootstrap[i]->create(idx); 3629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio != NULL ) { 3639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 3649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio == NULL ) { 3699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("No available audio device"); 3709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if 0 /* Don't fail SDL_Init() if audio isn't available. 3719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_OpenAudio() will handle it at that point. *sigh* 3729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 3739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 3749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 3759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall current_audio = audio; 3789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( current_audio ) { 3799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall current_audio->name = bootstrap[i]->name; 3809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( !current_audio->LockAudio && !current_audio->UnlockAudio ) { 3819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall current_audio->LockAudio = SDL_LockAudio_Default; 3829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall current_audio->UnlockAudio = SDL_UnlockAudio_Default; 3839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 3869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 3879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallchar *SDL_AudioDriverName(char *namebuf, int maxlen) 3899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 3909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( current_audio != NULL ) { 3919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_strlcpy(namebuf, current_audio->name, maxlen); 3929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(namebuf); 3939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(NULL); 3959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 3969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint SDL_OpenAudio(SDL_AudioSpec *desired, SDL_AudioSpec *obtained) 3989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 3999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_AudioDevice *audio; 4009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall const char *env; 4019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 4029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Start up the audio driver, if necessary */ 4039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( ! current_audio ) { 4049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) || 4059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall (current_audio == NULL) ) { 4069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 4079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio = current_audio; 4109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 4119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (audio->opened) { 4129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Audio device is already opened"); 4139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 4149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 4169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Verify some parameters */ 4179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( desired->freq == 0 ) { 4189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall env = SDL_getenv("SDL_AUDIO_FREQUENCY"); 4199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( env ) { 4209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->freq = SDL_atoi(env); 4219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( desired->freq == 0 ) { 4249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Pick some default audio frequency */ 4259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->freq = 22050; 4269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( desired->format == 0 ) { 4289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall env = SDL_getenv("SDL_AUDIO_FORMAT"); 4299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( env ) { 4309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->format = SDL_ParseAudioFormat(env); 4319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( desired->format == 0 ) { 4349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Pick some default audio format */ 4359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->format = AUDIO_S16; 4369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( desired->channels == 0 ) { 4389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall env = SDL_getenv("SDL_AUDIO_CHANNELS"); 4399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( env ) { 4409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->channels = (Uint8)SDL_atoi(env); 4419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( desired->channels == 0 ) { 4449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Pick a default number of channels */ 4459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->channels = 2; 4469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall switch ( desired->channels ) { 4489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall case 1: /* Mono */ 4499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall case 2: /* Stereo */ 4509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall case 4: /* surround */ 4519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall case 6: /* surround with center and lfe */ 4529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 4539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall default: 4549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("1 (mono) and 2 (stereo) channels supported"); 4559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 4569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( desired->samples == 0 ) { 4589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall env = SDL_getenv("SDL_AUDIO_SAMPLES"); 4599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( env ) { 4609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->samples = (Uint16)SDL_atoi(env); 4619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( desired->samples == 0 ) { 4649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Pick a default of ~46 ms at desired frequency */ 4659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int samples = (desired->freq / 1000) * 46; 4669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int power2 = 1; 4679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall while ( power2 < samples ) { 4689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall power2 *= 2; 4699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->samples = power2; 4719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( desired->callback == NULL ) { 4739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("SDL_OpenAudio() passed a NULL callback"); 4749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 4759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 4779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_THREADS_DISABLED 4789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Uses interrupt driven audio, without thread */ 4799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#else 4809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Create a semaphore for locking the sound buffers */ 4819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->mixer_lock = SDL_CreateMutex(); 4829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->mixer_lock == NULL ) { 4839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Couldn't create mixer lock"); 4849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_CloseAudio(); 4859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 4869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 4879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif /* SDL_THREADS_DISABLED */ 4889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 4899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Calculate the silence and size of the audio specification */ 4909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_CalculateAudioSpec(desired); 4919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 4929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Open the audio subsystem */ 4939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_memcpy(&audio->spec, desired, sizeof(audio->spec)); 4949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->convert.needed = 0; 4959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->enabled = 1; 4969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->paused = 1; 4979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 4989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->opened = audio->OpenAudio(audio, &audio->spec)+1; 4999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( ! audio->opened ) { 5019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_CloseAudio(); 5029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 5039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* If the audio driver changes the buffer size, accept it */ 5069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->spec.samples != desired->samples ) { 5079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->samples = audio->spec.samples; 5089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_CalculateAudioSpec(desired); 5099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Allocate a fake audio memory buffer */ 5129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->fake_stream = SDL_AllocAudioMem(audio->spec.size); 5139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->fake_stream == NULL ) { 5149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_CloseAudio(); 5159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_OutOfMemory(); 5169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 5179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* See if we need to do any conversion */ 5209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( obtained != NULL ) { 5219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_memcpy(obtained, &audio->spec, sizeof(audio->spec)); 5229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else if ( desired->freq != audio->spec.freq || 5239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->format != audio->spec.format || 5249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->channels != audio->spec.channels ) { 5259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Build an audio conversion block */ 5269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( SDL_BuildAudioCVT(&audio->convert, 5279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->format, desired->channels, 5289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall desired->freq, 5299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->spec.format, audio->spec.channels, 5309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->spec.freq) < 0 ) { 5319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_CloseAudio(); 5329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 5339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->convert.needed ) { 5359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->convert.len = (int) ( ((double) audio->spec.size) / 5369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->convert.len_ratio ); 5379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->convert.buf =(Uint8 *)SDL_AllocAudioMem( 5389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->convert.len*audio->convert.len_mult); 5399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->convert.buf == NULL ) { 5409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_CloseAudio(); 5419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_OutOfMemory(); 5429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 5439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Start the audio thread if necessary */ 5489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall switch (audio->opened) { 5499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall case 1: 5509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Start the audio thread */ 5519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if (defined(__WIN32__) && !defined(_WIN32_WCE)) && !defined(HAVE_LIBC) && !defined(__SYMBIAN32__) 5529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#undef SDL_CreateThread 5539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->thread = SDL_CreateThread(SDL_RunAudio, audio, NULL, NULL); 5549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#else 5559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->thread = SDL_CreateThread(SDL_RunAudio, audio); 5569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 5579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->thread == NULL ) { 5589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_CloseAudio(); 5599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Couldn't create audio thread"); 5609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 5619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 5639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall default: 5659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* The audio is now playing */ 5669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 5679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 5709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 5719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse HallSDL_audiostatus SDL_GetAudioStatus(void) 5739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 5749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_AudioDevice *audio = current_audio; 5759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_audiostatus status; 5769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall status = SDL_AUDIO_STOPPED; 5789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio && audio->enabled ) { 5799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->paused ) { 5809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall status = SDL_AUDIO_PAUSED; 5819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 5829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall status = SDL_AUDIO_PLAYING; 5839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(status); 5869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 5879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_PauseAudio (int pause_on) 5899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 5909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_AudioDevice *audio = current_audio; 5919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio ) { 5939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->paused = pause_on; 5949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 5959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 5969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 5979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_LockAudio (void) 5989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 5999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_AudioDevice *audio = current_audio; 6009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Obtain a lock on the mixing buffers */ 6029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio && audio->LockAudio ) { 6039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->LockAudio(audio); 6049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 6069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_UnlockAudio (void) 6089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 6099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_AudioDevice *audio = current_audio; 6109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Release lock on the mixing buffers */ 6129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio && audio->UnlockAudio ) { 6139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->UnlockAudio(audio); 6149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 6169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_CloseAudio (void) 6189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 6199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_QuitSubSystem(SDL_INIT_AUDIO); 6209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 6219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_AudioQuit(void) 6239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 6249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_AudioDevice *audio = current_audio; 6259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio ) { 6279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->enabled = 0; 6289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->thread != NULL ) { 6299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_WaitThread(audio->thread, NULL); 6309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->mixer_lock != NULL ) { 6329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_DestroyMutex(audio->mixer_lock); 6339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->fake_stream != NULL ) { 6359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_FreeAudioMem(audio->fake_stream); 6369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->convert.needed ) { 6389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_FreeAudioMem(audio->convert.buf); 6399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( audio->opened ) { 6429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->CloseAudio(audio); 6439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->opened = 0; 6449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Free the driver data */ 6469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall audio->free(audio); 6479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall current_audio = NULL; 6489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 6509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define NUM_FORMATS 6 6529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic int format_idx; 6539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic int format_idx_sub; 6549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic Uint16 format_list[NUM_FORMATS][NUM_FORMATS] = { 6559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { AUDIO_U8, AUDIO_S8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB }, 6569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { AUDIO_S8, AUDIO_U8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB }, 6579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_U8, AUDIO_S8 }, 6589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8, AUDIO_S8 }, 6599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U8, AUDIO_S8 }, 6609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U8, AUDIO_S8 }, 6619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall}; 6629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse HallUint16 SDL_FirstAudioFormat(Uint16 format) 6649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 6659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall for ( format_idx=0; format_idx < NUM_FORMATS; ++format_idx ) { 6669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( format_list[format_idx][0] == format ) { 6679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 6689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall format_idx_sub = 0; 6719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(SDL_NextAudioFormat()); 6729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 6739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse HallUint16 SDL_NextAudioFormat(void) 6759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 6769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( (format_idx == NUM_FORMATS) || (format_idx_sub == NUM_FORMATS) ) { 6779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 6789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(format_list[format_idx][format_idx_sub++]); 6809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 6819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_CalculateAudioSpec(SDL_AudioSpec *spec) 6839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 6849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall switch (spec->format) { 6859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall case AUDIO_U8: 6869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall spec->silence = 0x80; 6879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 6889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall default: 6899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall spec->silence = 0x00; 6909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall break; 6919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 6929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall spec->size = (spec->format&0xFF)/8; 6939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall spec->size *= spec->channels; 6949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall spec->size *= spec->samples; 6959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 6969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 6979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_Audio_SetCaption(const char *caption) 6989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 6999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ((current_audio) && (current_audio->SetCaption)) { 7009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall current_audio->SetCaption(current_audio, caption); 7019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 7029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 7039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 704