bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 1 | /* |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 2 | * QEMU SDL audio driver |
| 3 | * |
| 4 | * Copyright (c) 2004-2005 Vassili Karpov (malc) |
| 5 | * |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
bellard | 9f059ec | 2004-11-14 18:59:52 +0000 | [diff] [blame] | 24 | #include <SDL.h> |
| 25 | #include <SDL_thread.h> |
pbrook | 87ecb68 | 2007-11-17 17:14:51 +0000 | [diff] [blame] | 26 | #include "qemu-common.h" |
| 27 | #include "audio.h" |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 28 | |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 29 | #ifndef _WIN32 |
| 30 | #ifdef __sun__ |
| 31 | #define _POSIX_PTHREAD_SEMANTICS 1 |
blueswir1 | c5e9723 | 2009-03-07 20:06:23 +0000 | [diff] [blame] | 32 | #elif defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__DragonFly__) |
blueswir1 | 9b4c14c | 2008-10-25 11:19:14 +0000 | [diff] [blame] | 33 | #include <pthread.h> |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 34 | #endif |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 35 | #endif |
| 36 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 37 | #define AUDIO_CAP "sdl" |
| 38 | #include "audio_int.h" |
bellard | fb06518 | 2004-11-09 23:09:44 +0000 | [diff] [blame] | 39 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 40 | typedef struct SDLVoiceOut { |
| 41 | HWVoiceOut hw; |
| 42 | int live; |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 43 | int rpos; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 44 | int decr; |
| 45 | } SDLVoiceOut; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 46 | |
| 47 | static struct { |
| 48 | int nb_samples; |
| 49 | } conf = { |
Juan Quintela | 1a40d5e | 2009-08-11 02:31:17 +0200 | [diff] [blame] | 50 | .nb_samples = 1024 |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 51 | }; |
| 52 | |
blueswir1 | b1d8e52 | 2008-10-26 13:43:07 +0000 | [diff] [blame] | 53 | static struct SDLAudioState { |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 54 | int exit; |
| 55 | SDL_mutex *mutex; |
| 56 | SDL_sem *sem; |
| 57 | int initialized; |
| 58 | } glob_sdl; |
| 59 | typedef struct SDLAudioState SDLAudioState; |
| 60 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 61 | static void GCC_FMT_ATTR (1, 2) sdl_logerr (const char *fmt, ...) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 62 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 63 | va_list ap; |
| 64 | |
| 65 | va_start (ap, fmt); |
| 66 | AUD_vlog (AUDIO_CAP, fmt, ap); |
| 67 | va_end (ap); |
| 68 | |
| 69 | AUD_log (AUDIO_CAP, "Reason: %s\n", SDL_GetError ()); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 70 | } |
| 71 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 72 | static int sdl_lock (SDLAudioState *s, const char *forfn) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 73 | { |
| 74 | if (SDL_LockMutex (s->mutex)) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 75 | sdl_logerr ("SDL_LockMutex for %s failed\n", forfn); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 76 | return -1; |
| 77 | } |
| 78 | return 0; |
| 79 | } |
| 80 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 81 | static int sdl_unlock (SDLAudioState *s, const char *forfn) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 82 | { |
| 83 | if (SDL_UnlockMutex (s->mutex)) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 84 | sdl_logerr ("SDL_UnlockMutex for %s failed\n", forfn); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 85 | return -1; |
| 86 | } |
| 87 | return 0; |
| 88 | } |
| 89 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 90 | static int sdl_post (SDLAudioState *s, const char *forfn) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 91 | { |
| 92 | if (SDL_SemPost (s->sem)) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 93 | sdl_logerr ("SDL_SemPost for %s failed\n", forfn); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 94 | return -1; |
| 95 | } |
| 96 | return 0; |
| 97 | } |
| 98 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 99 | static int sdl_wait (SDLAudioState *s, const char *forfn) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 100 | { |
| 101 | if (SDL_SemWait (s->sem)) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 102 | sdl_logerr ("SDL_SemWait for %s failed\n", forfn); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 103 | return -1; |
| 104 | } |
| 105 | return 0; |
| 106 | } |
| 107 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 108 | static int sdl_unlock_and_post (SDLAudioState *s, const char *forfn) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 109 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 110 | if (sdl_unlock (s, forfn)) { |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 111 | return -1; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 112 | } |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 113 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 114 | return sdl_post (s, forfn); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 115 | } |
| 116 | |
Serge Ziryukin | 6c557ab | 2010-04-22 14:14:24 +0300 | [diff] [blame] | 117 | static int aud_to_sdlfmt (audfmt_e fmt) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 118 | { |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 119 | switch (fmt) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 120 | case AUD_FMT_S8: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 121 | return AUDIO_S8; |
| 122 | |
| 123 | case AUD_FMT_U8: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 124 | return AUDIO_U8; |
| 125 | |
| 126 | case AUD_FMT_S16: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 127 | return AUDIO_S16LSB; |
| 128 | |
| 129 | case AUD_FMT_U16: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 130 | return AUDIO_U16LSB; |
| 131 | |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 132 | default: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 133 | dolog ("Internal logic error: Bad audio format %d\n", fmt); |
| 134 | #ifdef DEBUG_AUDIO |
| 135 | abort (); |
| 136 | #endif |
| 137 | return AUDIO_U8; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 138 | } |
| 139 | } |
| 140 | |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 141 | static int sdl_to_audfmt(int sdlfmt, audfmt_e *fmt, int *endianness) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 142 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 143 | switch (sdlfmt) { |
| 144 | case AUDIO_S8: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 145 | *endianness = 0; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 146 | *fmt = AUD_FMT_S8; |
| 147 | break; |
| 148 | |
| 149 | case AUDIO_U8: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 150 | *endianness = 0; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 151 | *fmt = AUD_FMT_U8; |
| 152 | break; |
| 153 | |
| 154 | case AUDIO_S16LSB: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 155 | *endianness = 0; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 156 | *fmt = AUD_FMT_S16; |
| 157 | break; |
| 158 | |
| 159 | case AUDIO_U16LSB: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 160 | *endianness = 0; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 161 | *fmt = AUD_FMT_U16; |
| 162 | break; |
| 163 | |
| 164 | case AUDIO_S16MSB: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 165 | *endianness = 1; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 166 | *fmt = AUD_FMT_S16; |
| 167 | break; |
| 168 | |
| 169 | case AUDIO_U16MSB: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 170 | *endianness = 1; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 171 | *fmt = AUD_FMT_U16; |
| 172 | break; |
| 173 | |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 174 | default: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 175 | dolog ("Unrecognized SDL audio format %d\n", sdlfmt); |
| 176 | return -1; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 177 | } |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 178 | |
| 179 | return 0; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 180 | } |
| 181 | |
| 182 | static int sdl_open (SDL_AudioSpec *req, SDL_AudioSpec *obt) |
| 183 | { |
| 184 | int status; |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 185 | #ifndef _WIN32 |
malc | d087bb3 | 2010-08-06 13:09:41 +0400 | [diff] [blame] | 186 | int err; |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 187 | sigset_t new, old; |
| 188 | |
| 189 | /* Make sure potential threads created by SDL don't hog signals. */ |
malc | d087bb3 | 2010-08-06 13:09:41 +0400 | [diff] [blame] | 190 | err = sigfillset (&new); |
| 191 | if (err) { |
| 192 | dolog ("sdl_open: sigfillset failed: %s\n", strerror (errno)); |
malc | 60592ed | 2010-08-07 20:03:05 +0400 | [diff] [blame] | 193 | return -1; |
malc | d087bb3 | 2010-08-06 13:09:41 +0400 | [diff] [blame] | 194 | } |
| 195 | err = pthread_sigmask (SIG_BLOCK, &new, &old); |
| 196 | if (err) { |
| 197 | dolog ("sdl_open: pthread_sigmask failed: %s\n", strerror (err)); |
| 198 | return -1; |
| 199 | } |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 200 | #endif |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 201 | |
| 202 | status = SDL_OpenAudio (req, obt); |
| 203 | if (status) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 204 | sdl_logerr ("SDL_OpenAudio failed\n"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 205 | } |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 206 | |
| 207 | #ifndef _WIN32 |
malc | d087bb3 | 2010-08-06 13:09:41 +0400 | [diff] [blame] | 208 | err = pthread_sigmask (SIG_SETMASK, &old, NULL); |
| 209 | if (err) { |
| 210 | dolog ("sdl_open: pthread_sigmask (restore) failed: %s\n", |
| 211 | strerror (errno)); |
| 212 | /* We have failed to restore original signal mask, all bets are off, |
| 213 | so exit the process */ |
| 214 | exit (EXIT_FAILURE); |
| 215 | } |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 216 | #endif |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 217 | return status; |
| 218 | } |
| 219 | |
| 220 | static void sdl_close (SDLAudioState *s) |
| 221 | { |
| 222 | if (s->initialized) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 223 | sdl_lock (s, "sdl_close"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 224 | s->exit = 1; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 225 | sdl_unlock_and_post (s, "sdl_close"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 226 | SDL_PauseAudio (1); |
| 227 | SDL_CloseAudio (); |
| 228 | s->initialized = 0; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | static void sdl_callback (void *opaque, Uint8 *buf, int len) |
| 233 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 234 | SDLVoiceOut *sdl = opaque; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 235 | SDLAudioState *s = &glob_sdl; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 236 | HWVoiceOut *hw = &sdl->hw; |
| 237 | int samples = len >> hw->info.shift; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 238 | |
| 239 | if (s->exit) { |
| 240 | return; |
| 241 | } |
| 242 | |
| 243 | while (samples) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 244 | int to_mix, decr; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 245 | |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 246 | /* dolog ("in callback samples=%d\n", samples); */ |
| 247 | sdl_wait (s, "sdl_callback"); |
| 248 | if (s->exit) { |
| 249 | return; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 250 | } |
| 251 | |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 252 | if (sdl_lock (s, "sdl_callback")) { |
| 253 | return; |
| 254 | } |
malc | 4839abe | 2009-09-30 16:25:55 +0400 | [diff] [blame] | 255 | |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 256 | if (audio_bug (AUDIO_FUNC, sdl->live < 0 || sdl->live > hw->samples)) { |
| 257 | dolog ("sdl->live=%d hw->samples=%d\n", |
| 258 | sdl->live, hw->samples); |
| 259 | return; |
| 260 | } |
| 261 | |
| 262 | if (!sdl->live) { |
| 263 | goto again; |
| 264 | } |
| 265 | |
| 266 | /* dolog ("in callback live=%d\n", live); */ |
| 267 | to_mix = audio_MIN (samples, sdl->live); |
| 268 | decr = to_mix; |
| 269 | while (to_mix) { |
| 270 | int chunk = audio_MIN (to_mix, hw->samples - hw->rpos); |
| 271 | struct st_sample *src = hw->mix_buf + hw->rpos; |
| 272 | |
| 273 | /* dolog ("in callback to_mix %d, chunk %d\n", to_mix, chunk); */ |
| 274 | hw->clip (buf, src, chunk); |
| 275 | sdl->rpos = (sdl->rpos + chunk) % hw->samples; |
| 276 | to_mix -= chunk; |
| 277 | buf += chunk << hw->info.shift; |
| 278 | } |
| 279 | samples -= decr; |
| 280 | sdl->live -= decr; |
| 281 | sdl->decr += decr; |
| 282 | |
| 283 | again: |
| 284 | if (sdl_unlock (s, "sdl_callback")) { |
| 285 | return; |
| 286 | } |
malc | 4839abe | 2009-09-30 16:25:55 +0400 | [diff] [blame] | 287 | } |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 288 | /* dolog ("done len=%d\n", len); */ |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 289 | } |
| 290 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 291 | static int sdl_write_out (SWVoiceOut *sw, void *buf, int len) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 292 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 293 | return audio_pcm_sw_write (sw, buf, len); |
| 294 | } |
| 295 | |
malc | bdff253 | 2009-09-18 11:37:39 +0400 | [diff] [blame] | 296 | static int sdl_run_out (HWVoiceOut *hw, int live) |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 297 | { |
malc | bdff253 | 2009-09-18 11:37:39 +0400 | [diff] [blame] | 298 | int decr; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 299 | SDLVoiceOut *sdl = (SDLVoiceOut *) hw; |
| 300 | SDLAudioState *s = &glob_sdl; |
| 301 | |
malc | 3fd7f63 | 2009-09-18 11:19:00 +0400 | [diff] [blame] | 302 | if (sdl_lock (s, "sdl_run_out")) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 303 | return 0; |
| 304 | } |
| 305 | |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 306 | if (sdl->decr > live) { |
| 307 | ldebug ("sdl->decr %d live %d sdl->live %d\n", |
| 308 | sdl->decr, |
| 309 | live, |
| 310 | sdl->live); |
| 311 | } |
| 312 | |
| 313 | decr = audio_MIN (sdl->decr, live); |
| 314 | sdl->decr -= decr; |
| 315 | |
| 316 | sdl->live = live - decr; |
| 317 | hw->rpos = sdl->rpos; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 318 | |
| 319 | if (sdl->live > 0) { |
malc | 3fd7f63 | 2009-09-18 11:19:00 +0400 | [diff] [blame] | 320 | sdl_unlock_and_post (s, "sdl_run_out"); |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 321 | } |
| 322 | else { |
malc | 3fd7f63 | 2009-09-18 11:19:00 +0400 | [diff] [blame] | 323 | sdl_unlock (s, "sdl_run_out"); |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 324 | } |
| 325 | return decr; |
| 326 | } |
| 327 | |
| 328 | static void sdl_fini_out (HWVoiceOut *hw) |
| 329 | { |
| 330 | (void) hw; |
| 331 | |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 332 | sdl_close (&glob_sdl); |
| 333 | } |
| 334 | |
malc | 1ea879e | 2008-12-03 22:48:44 +0000 | [diff] [blame] | 335 | static int sdl_init_out (HWVoiceOut *hw, struct audsettings *as) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 336 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 337 | SDLVoiceOut *sdl = (SDLVoiceOut *) hw; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 338 | SDLAudioState *s = &glob_sdl; |
| 339 | SDL_AudioSpec req, obt; |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 340 | int endianness; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 341 | int err; |
| 342 | audfmt_e effective_fmt; |
malc | 1ea879e | 2008-12-03 22:48:44 +0000 | [diff] [blame] | 343 | struct audsettings obt_as; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 344 | |
bellard | c0fe382 | 2005-11-05 18:55:28 +0000 | [diff] [blame] | 345 | req.freq = as->freq; |
Serge Ziryukin | 6c557ab | 2010-04-22 14:14:24 +0300 | [diff] [blame] | 346 | req.format = aud_to_sdlfmt (as->fmt); |
bellard | c0fe382 | 2005-11-05 18:55:28 +0000 | [diff] [blame] | 347 | req.channels = as->nchannels; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 348 | req.samples = conf.nb_samples; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 349 | req.callback = sdl_callback; |
| 350 | req.userdata = sdl; |
| 351 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 352 | if (sdl_open (&req, &obt)) { |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 353 | return -1; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 354 | } |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 355 | |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 356 | err = sdl_to_audfmt(obt.format, &effective_fmt, &endianness); |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 357 | if (err) { |
| 358 | sdl_close (s); |
| 359 | return -1; |
| 360 | } |
| 361 | |
bellard | c0fe382 | 2005-11-05 18:55:28 +0000 | [diff] [blame] | 362 | obt_as.freq = obt.freq; |
| 363 | obt_as.nchannels = obt.channels; |
| 364 | obt_as.fmt = effective_fmt; |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 365 | obt_as.endianness = endianness; |
bellard | c0fe382 | 2005-11-05 18:55:28 +0000 | [diff] [blame] | 366 | |
bellard | d929eba | 2006-07-04 21:47:22 +0000 | [diff] [blame] | 367 | audio_pcm_init_info (&hw->info, &obt_as); |
bellard | c0fe382 | 2005-11-05 18:55:28 +0000 | [diff] [blame] | 368 | hw->samples = obt.samples; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 369 | |
| 370 | s->initialized = 1; |
| 371 | s->exit = 0; |
| 372 | SDL_PauseAudio (0); |
| 373 | return 0; |
| 374 | } |
| 375 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 376 | static int sdl_ctl_out (HWVoiceOut *hw, int cmd, ...) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 377 | { |
| 378 | (void) hw; |
| 379 | |
| 380 | switch (cmd) { |
| 381 | case VOICE_ENABLE: |
| 382 | SDL_PauseAudio (0); |
| 383 | break; |
| 384 | |
| 385 | case VOICE_DISABLE: |
| 386 | SDL_PauseAudio (1); |
| 387 | break; |
| 388 | } |
| 389 | return 0; |
| 390 | } |
| 391 | |
| 392 | static void *sdl_audio_init (void) |
| 393 | { |
| 394 | SDLAudioState *s = &glob_sdl; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 395 | |
| 396 | if (SDL_InitSubSystem (SDL_INIT_AUDIO)) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 397 | sdl_logerr ("SDL failed to initialize audio subsystem\n"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 398 | return NULL; |
| 399 | } |
| 400 | |
| 401 | s->mutex = SDL_CreateMutex (); |
| 402 | if (!s->mutex) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 403 | sdl_logerr ("Failed to create SDL mutex\n"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 404 | SDL_QuitSubSystem (SDL_INIT_AUDIO); |
| 405 | return NULL; |
| 406 | } |
| 407 | |
| 408 | s->sem = SDL_CreateSemaphore (0); |
| 409 | if (!s->sem) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 410 | sdl_logerr ("Failed to create SDL semaphore\n"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 411 | SDL_DestroyMutex (s->mutex); |
| 412 | SDL_QuitSubSystem (SDL_INIT_AUDIO); |
| 413 | return NULL; |
| 414 | } |
| 415 | |
| 416 | return s; |
| 417 | } |
| 418 | |
| 419 | static void sdl_audio_fini (void *opaque) |
| 420 | { |
| 421 | SDLAudioState *s = opaque; |
| 422 | sdl_close (s); |
| 423 | SDL_DestroySemaphore (s->sem); |
| 424 | SDL_DestroyMutex (s->mutex); |
| 425 | SDL_QuitSubSystem (SDL_INIT_AUDIO); |
| 426 | } |
| 427 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 428 | static struct audio_option sdl_options[] = { |
malc | 98f9f48 | 2009-08-11 20:48:02 +0400 | [diff] [blame] | 429 | { |
| 430 | .name = "SAMPLES", |
| 431 | .tag = AUD_OPT_INT, |
| 432 | .valp = &conf.nb_samples, |
| 433 | .descr = "Size of SDL buffer in samples" |
| 434 | }, |
Juan Quintela | 2700efa | 2009-08-11 02:31:16 +0200 | [diff] [blame] | 435 | { /* End of list */ } |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 436 | }; |
| 437 | |
blueswir1 | 35f4b58 | 2008-10-06 18:08:30 +0000 | [diff] [blame] | 438 | static struct audio_pcm_ops sdl_pcm_ops = { |
Juan Quintela | 1dd3e4d | 2009-08-11 02:31:15 +0200 | [diff] [blame] | 439 | .init_out = sdl_init_out, |
| 440 | .fini_out = sdl_fini_out, |
| 441 | .run_out = sdl_run_out, |
| 442 | .write = sdl_write_out, |
| 443 | .ctl_out = sdl_ctl_out, |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 444 | }; |
| 445 | |
| 446 | struct audio_driver sdl_audio_driver = { |
Juan Quintela | bee37f3 | 2009-08-11 02:31:14 +0200 | [diff] [blame] | 447 | .name = "sdl", |
| 448 | .descr = "SDL http://www.libsdl.org", |
| 449 | .options = sdl_options, |
| 450 | .init = sdl_audio_init, |
| 451 | .fini = sdl_audio_fini, |
| 452 | .pcm_ops = &sdl_pcm_ops, |
| 453 | .can_be_default = 1, |
| 454 | .max_voices_out = 1, |
| 455 | .max_voices_in = 0, |
| 456 | .voice_size_out = sizeof (SDLVoiceOut), |
| 457 | .voice_size_in = 0 |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 458 | }; |