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 | */ |
Peter Maydell | 6086a56 | 2016-01-18 17:33:52 +0000 | [diff] [blame] | 24 | #include "qemu/osdep.h" |
bellard | 9f059ec | 2004-11-14 18:59:52 +0000 | [diff] [blame] | 25 | #include <SDL.h> |
| 26 | #include <SDL_thread.h> |
pbrook | 87ecb68 | 2007-11-17 17:14:51 +0000 | [diff] [blame] | 27 | #include "qemu-common.h" |
| 28 | #include "audio.h" |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 29 | |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 30 | #ifndef _WIN32 |
| 31 | #ifdef __sun__ |
| 32 | #define _POSIX_PTHREAD_SEMANTICS 1 |
blueswir1 | c5e9723 | 2009-03-07 20:06:23 +0000 | [diff] [blame] | 33 | #elif defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__DragonFly__) |
blueswir1 | 9b4c14c | 2008-10-25 11:19:14 +0000 | [diff] [blame] | 34 | #include <pthread.h> |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 35 | #endif |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 36 | #endif |
| 37 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 38 | #define AUDIO_CAP "sdl" |
| 39 | #include "audio_int.h" |
bellard | fb06518 | 2004-11-09 23:09:44 +0000 | [diff] [blame] | 40 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 41 | typedef struct SDLVoiceOut { |
| 42 | HWVoiceOut hw; |
| 43 | int live; |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 44 | int rpos; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 45 | int decr; |
| 46 | } SDLVoiceOut; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 47 | |
| 48 | static struct { |
| 49 | int nb_samples; |
| 50 | } conf = { |
Juan Quintela | 1a40d5e | 2009-08-11 02:31:17 +0200 | [diff] [blame] | 51 | .nb_samples = 1024 |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 52 | }; |
| 53 | |
blueswir1 | b1d8e52 | 2008-10-26 13:43:07 +0000 | [diff] [blame] | 54 | static struct SDLAudioState { |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 55 | int exit; |
| 56 | SDL_mutex *mutex; |
| 57 | SDL_sem *sem; |
| 58 | int initialized; |
Kővágó, Zoltán | 81ebb07 | 2015-06-03 23:03:55 +0200 | [diff] [blame] | 59 | bool driver_created; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 60 | } glob_sdl; |
| 61 | typedef struct SDLAudioState SDLAudioState; |
| 62 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 63 | static void GCC_FMT_ATTR (1, 2) sdl_logerr (const char *fmt, ...) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 64 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 65 | va_list ap; |
| 66 | |
| 67 | va_start (ap, fmt); |
| 68 | AUD_vlog (AUDIO_CAP, fmt, ap); |
| 69 | va_end (ap); |
| 70 | |
| 71 | AUD_log (AUDIO_CAP, "Reason: %s\n", SDL_GetError ()); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 72 | } |
| 73 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 74 | static int sdl_lock (SDLAudioState *s, const char *forfn) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 75 | { |
| 76 | if (SDL_LockMutex (s->mutex)) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 77 | sdl_logerr ("SDL_LockMutex for %s failed\n", forfn); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 78 | return -1; |
| 79 | } |
| 80 | return 0; |
| 81 | } |
| 82 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 83 | static int sdl_unlock (SDLAudioState *s, const char *forfn) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 84 | { |
| 85 | if (SDL_UnlockMutex (s->mutex)) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 86 | sdl_logerr ("SDL_UnlockMutex for %s failed\n", forfn); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 87 | return -1; |
| 88 | } |
| 89 | return 0; |
| 90 | } |
| 91 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 92 | static int sdl_post (SDLAudioState *s, const char *forfn) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 93 | { |
| 94 | if (SDL_SemPost (s->sem)) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 95 | sdl_logerr ("SDL_SemPost for %s failed\n", forfn); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 96 | return -1; |
| 97 | } |
| 98 | return 0; |
| 99 | } |
| 100 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 101 | static int sdl_wait (SDLAudioState *s, const char *forfn) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 102 | { |
| 103 | if (SDL_SemWait (s->sem)) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 104 | sdl_logerr ("SDL_SemWait for %s failed\n", forfn); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 105 | return -1; |
| 106 | } |
| 107 | return 0; |
| 108 | } |
| 109 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 110 | static int sdl_unlock_and_post (SDLAudioState *s, const char *forfn) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 111 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 112 | if (sdl_unlock (s, forfn)) { |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 113 | return -1; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 114 | } |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 115 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 116 | return sdl_post (s, forfn); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 117 | } |
| 118 | |
Serge Ziryukin | 6c557ab | 2010-04-22 14:14:24 +0300 | [diff] [blame] | 119 | static int aud_to_sdlfmt (audfmt_e fmt) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 120 | { |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 121 | switch (fmt) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 122 | case AUD_FMT_S8: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 123 | return AUDIO_S8; |
| 124 | |
| 125 | case AUD_FMT_U8: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 126 | return AUDIO_U8; |
| 127 | |
| 128 | case AUD_FMT_S16: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 129 | return AUDIO_S16LSB; |
| 130 | |
| 131 | case AUD_FMT_U16: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 132 | return AUDIO_U16LSB; |
| 133 | |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 134 | default: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 135 | dolog ("Internal logic error: Bad audio format %d\n", fmt); |
| 136 | #ifdef DEBUG_AUDIO |
| 137 | abort (); |
| 138 | #endif |
| 139 | return AUDIO_U8; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 140 | } |
| 141 | } |
| 142 | |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 143 | static int sdl_to_audfmt(int sdlfmt, audfmt_e *fmt, int *endianness) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 144 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 145 | switch (sdlfmt) { |
| 146 | case AUDIO_S8: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 147 | *endianness = 0; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 148 | *fmt = AUD_FMT_S8; |
| 149 | break; |
| 150 | |
| 151 | case AUDIO_U8: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 152 | *endianness = 0; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 153 | *fmt = AUD_FMT_U8; |
| 154 | break; |
| 155 | |
| 156 | case AUDIO_S16LSB: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 157 | *endianness = 0; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 158 | *fmt = AUD_FMT_S16; |
| 159 | break; |
| 160 | |
| 161 | case AUDIO_U16LSB: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 162 | *endianness = 0; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 163 | *fmt = AUD_FMT_U16; |
| 164 | break; |
| 165 | |
| 166 | case AUDIO_S16MSB: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 167 | *endianness = 1; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 168 | *fmt = AUD_FMT_S16; |
| 169 | break; |
| 170 | |
| 171 | case AUDIO_U16MSB: |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 172 | *endianness = 1; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 173 | *fmt = AUD_FMT_U16; |
| 174 | break; |
| 175 | |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 176 | default: |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 177 | dolog ("Unrecognized SDL audio format %d\n", sdlfmt); |
| 178 | return -1; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 179 | } |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 180 | |
| 181 | return 0; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | static int sdl_open (SDL_AudioSpec *req, SDL_AudioSpec *obt) |
| 185 | { |
| 186 | int status; |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 187 | #ifndef _WIN32 |
malc | d087bb3 | 2010-08-06 13:09:41 +0400 | [diff] [blame] | 188 | int err; |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 189 | sigset_t new, old; |
| 190 | |
| 191 | /* Make sure potential threads created by SDL don't hog signals. */ |
malc | d087bb3 | 2010-08-06 13:09:41 +0400 | [diff] [blame] | 192 | err = sigfillset (&new); |
| 193 | if (err) { |
| 194 | dolog ("sdl_open: sigfillset failed: %s\n", strerror (errno)); |
malc | 60592ed | 2010-08-07 20:03:05 +0400 | [diff] [blame] | 195 | return -1; |
malc | d087bb3 | 2010-08-06 13:09:41 +0400 | [diff] [blame] | 196 | } |
| 197 | err = pthread_sigmask (SIG_BLOCK, &new, &old); |
| 198 | if (err) { |
| 199 | dolog ("sdl_open: pthread_sigmask failed: %s\n", strerror (err)); |
| 200 | return -1; |
| 201 | } |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 202 | #endif |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 203 | |
| 204 | status = SDL_OpenAudio (req, obt); |
| 205 | if (status) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 206 | sdl_logerr ("SDL_OpenAudio failed\n"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 207 | } |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 208 | |
| 209 | #ifndef _WIN32 |
malc | d087bb3 | 2010-08-06 13:09:41 +0400 | [diff] [blame] | 210 | err = pthread_sigmask (SIG_SETMASK, &old, NULL); |
| 211 | if (err) { |
| 212 | dolog ("sdl_open: pthread_sigmask (restore) failed: %s\n", |
| 213 | strerror (errno)); |
| 214 | /* We have failed to restore original signal mask, all bets are off, |
| 215 | so exit the process */ |
| 216 | exit (EXIT_FAILURE); |
| 217 | } |
ths | e784ba7 | 2007-07-11 23:23:15 +0000 | [diff] [blame] | 218 | #endif |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 219 | return status; |
| 220 | } |
| 221 | |
| 222 | static void sdl_close (SDLAudioState *s) |
| 223 | { |
| 224 | if (s->initialized) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 225 | sdl_lock (s, "sdl_close"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 226 | s->exit = 1; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 227 | sdl_unlock_and_post (s, "sdl_close"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 228 | SDL_PauseAudio (1); |
| 229 | SDL_CloseAudio (); |
| 230 | s->initialized = 0; |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | static void sdl_callback (void *opaque, Uint8 *buf, int len) |
| 235 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 236 | SDLVoiceOut *sdl = opaque; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 237 | SDLAudioState *s = &glob_sdl; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 238 | HWVoiceOut *hw = &sdl->hw; |
| 239 | int samples = len >> hw->info.shift; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 240 | |
| 241 | if (s->exit) { |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | while (samples) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 246 | int to_mix, decr; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 247 | |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 248 | /* dolog ("in callback samples=%d\n", samples); */ |
| 249 | sdl_wait (s, "sdl_callback"); |
| 250 | if (s->exit) { |
| 251 | return; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 252 | } |
| 253 | |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 254 | if (sdl_lock (s, "sdl_callback")) { |
| 255 | return; |
| 256 | } |
malc | 4839abe | 2009-09-30 16:25:55 +0400 | [diff] [blame] | 257 | |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 258 | if (audio_bug (AUDIO_FUNC, sdl->live < 0 || sdl->live > hw->samples)) { |
| 259 | dolog ("sdl->live=%d hw->samples=%d\n", |
| 260 | sdl->live, hw->samples); |
| 261 | return; |
| 262 | } |
| 263 | |
| 264 | if (!sdl->live) { |
| 265 | goto again; |
| 266 | } |
| 267 | |
| 268 | /* dolog ("in callback live=%d\n", live); */ |
| 269 | to_mix = audio_MIN (samples, sdl->live); |
| 270 | decr = to_mix; |
| 271 | while (to_mix) { |
| 272 | int chunk = audio_MIN (to_mix, hw->samples - hw->rpos); |
| 273 | struct st_sample *src = hw->mix_buf + hw->rpos; |
| 274 | |
| 275 | /* dolog ("in callback to_mix %d, chunk %d\n", to_mix, chunk); */ |
| 276 | hw->clip (buf, src, chunk); |
| 277 | sdl->rpos = (sdl->rpos + chunk) % hw->samples; |
| 278 | to_mix -= chunk; |
| 279 | buf += chunk << hw->info.shift; |
| 280 | } |
| 281 | samples -= decr; |
| 282 | sdl->live -= decr; |
| 283 | sdl->decr += decr; |
| 284 | |
| 285 | again: |
| 286 | if (sdl_unlock (s, "sdl_callback")) { |
| 287 | return; |
| 288 | } |
malc | 4839abe | 2009-09-30 16:25:55 +0400 | [diff] [blame] | 289 | } |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 290 | /* dolog ("done len=%d\n", len); */ |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 291 | } |
| 292 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 293 | static int sdl_write_out (SWVoiceOut *sw, void *buf, int len) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 294 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 295 | return audio_pcm_sw_write (sw, buf, len); |
| 296 | } |
| 297 | |
malc | bdff253 | 2009-09-18 11:37:39 +0400 | [diff] [blame] | 298 | static int sdl_run_out (HWVoiceOut *hw, int live) |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 299 | { |
malc | bdff253 | 2009-09-18 11:37:39 +0400 | [diff] [blame] | 300 | int decr; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 301 | SDLVoiceOut *sdl = (SDLVoiceOut *) hw; |
| 302 | SDLAudioState *s = &glob_sdl; |
| 303 | |
malc | 3fd7f63 | 2009-09-18 11:19:00 +0400 | [diff] [blame] | 304 | if (sdl_lock (s, "sdl_run_out")) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 305 | return 0; |
| 306 | } |
| 307 | |
malc | ff54149 | 2010-01-17 00:25:29 +0300 | [diff] [blame] | 308 | if (sdl->decr > live) { |
| 309 | ldebug ("sdl->decr %d live %d sdl->live %d\n", |
| 310 | sdl->decr, |
| 311 | live, |
| 312 | sdl->live); |
| 313 | } |
| 314 | |
| 315 | decr = audio_MIN (sdl->decr, live); |
| 316 | sdl->decr -= decr; |
| 317 | |
| 318 | sdl->live = live - decr; |
| 319 | hw->rpos = sdl->rpos; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 320 | |
| 321 | if (sdl->live > 0) { |
malc | 3fd7f63 | 2009-09-18 11:19:00 +0400 | [diff] [blame] | 322 | sdl_unlock_and_post (s, "sdl_run_out"); |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 323 | } |
| 324 | else { |
malc | 3fd7f63 | 2009-09-18 11:19:00 +0400 | [diff] [blame] | 325 | sdl_unlock (s, "sdl_run_out"); |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 326 | } |
| 327 | return decr; |
| 328 | } |
| 329 | |
| 330 | static void sdl_fini_out (HWVoiceOut *hw) |
| 331 | { |
| 332 | (void) hw; |
| 333 | |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 334 | sdl_close (&glob_sdl); |
| 335 | } |
| 336 | |
Kővágó, Zoltán | 5706db1 | 2015-06-03 23:03:47 +0200 | [diff] [blame] | 337 | static int sdl_init_out(HWVoiceOut *hw, struct audsettings *as, |
| 338 | void *drv_opaque) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 339 | { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 340 | SDLVoiceOut *sdl = (SDLVoiceOut *) hw; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 341 | SDLAudioState *s = &glob_sdl; |
| 342 | SDL_AudioSpec req, obt; |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 343 | int endianness; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 344 | int err; |
| 345 | audfmt_e effective_fmt; |
malc | 1ea879e | 2008-12-03 22:48:44 +0000 | [diff] [blame] | 346 | struct audsettings obt_as; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 347 | |
bellard | c0fe382 | 2005-11-05 18:55:28 +0000 | [diff] [blame] | 348 | req.freq = as->freq; |
Serge Ziryukin | 6c557ab | 2010-04-22 14:14:24 +0300 | [diff] [blame] | 349 | req.format = aud_to_sdlfmt (as->fmt); |
bellard | c0fe382 | 2005-11-05 18:55:28 +0000 | [diff] [blame] | 350 | req.channels = as->nchannels; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 351 | req.samples = conf.nb_samples; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 352 | req.callback = sdl_callback; |
| 353 | req.userdata = sdl; |
| 354 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 355 | if (sdl_open (&req, &obt)) { |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 356 | return -1; |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 357 | } |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 358 | |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 359 | err = sdl_to_audfmt(obt.format, &effective_fmt, &endianness); |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 360 | if (err) { |
| 361 | sdl_close (s); |
| 362 | return -1; |
| 363 | } |
| 364 | |
bellard | c0fe382 | 2005-11-05 18:55:28 +0000 | [diff] [blame] | 365 | obt_as.freq = obt.freq; |
| 366 | obt_as.nchannels = obt.channels; |
| 367 | obt_as.fmt = effective_fmt; |
Stefan Weil | 4ff9786 | 2011-03-13 15:44:02 +0100 | [diff] [blame] | 368 | obt_as.endianness = endianness; |
bellard | c0fe382 | 2005-11-05 18:55:28 +0000 | [diff] [blame] | 369 | |
bellard | d929eba | 2006-07-04 21:47:22 +0000 | [diff] [blame] | 370 | audio_pcm_init_info (&hw->info, &obt_as); |
bellard | c0fe382 | 2005-11-05 18:55:28 +0000 | [diff] [blame] | 371 | hw->samples = obt.samples; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 372 | |
| 373 | s->initialized = 1; |
| 374 | s->exit = 0; |
| 375 | SDL_PauseAudio (0); |
| 376 | return 0; |
| 377 | } |
| 378 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 379 | static int sdl_ctl_out (HWVoiceOut *hw, int cmd, ...) |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 380 | { |
| 381 | (void) hw; |
| 382 | |
| 383 | switch (cmd) { |
| 384 | case VOICE_ENABLE: |
| 385 | SDL_PauseAudio (0); |
| 386 | break; |
| 387 | |
| 388 | case VOICE_DISABLE: |
| 389 | SDL_PauseAudio (1); |
| 390 | break; |
| 391 | } |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | static void *sdl_audio_init (void) |
| 396 | { |
| 397 | SDLAudioState *s = &glob_sdl; |
Kővágó, Zoltán | 81ebb07 | 2015-06-03 23:03:55 +0200 | [diff] [blame] | 398 | if (s->driver_created) { |
| 399 | sdl_logerr("Can't create multiple sdl backends\n"); |
| 400 | return NULL; |
| 401 | } |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 402 | |
| 403 | if (SDL_InitSubSystem (SDL_INIT_AUDIO)) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 404 | sdl_logerr ("SDL failed to initialize audio subsystem\n"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 405 | return NULL; |
| 406 | } |
| 407 | |
| 408 | s->mutex = SDL_CreateMutex (); |
| 409 | if (!s->mutex) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 410 | sdl_logerr ("Failed to create SDL mutex\n"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 411 | SDL_QuitSubSystem (SDL_INIT_AUDIO); |
| 412 | return NULL; |
| 413 | } |
| 414 | |
| 415 | s->sem = SDL_CreateSemaphore (0); |
| 416 | if (!s->sem) { |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 417 | sdl_logerr ("Failed to create SDL semaphore\n"); |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 418 | SDL_DestroyMutex (s->mutex); |
| 419 | SDL_QuitSubSystem (SDL_INIT_AUDIO); |
| 420 | return NULL; |
| 421 | } |
| 422 | |
Kővágó, Zoltán | 81ebb07 | 2015-06-03 23:03:55 +0200 | [diff] [blame] | 423 | s->driver_created = true; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 424 | return s; |
| 425 | } |
| 426 | |
| 427 | static void sdl_audio_fini (void *opaque) |
| 428 | { |
| 429 | SDLAudioState *s = opaque; |
| 430 | sdl_close (s); |
| 431 | SDL_DestroySemaphore (s->sem); |
| 432 | SDL_DestroyMutex (s->mutex); |
| 433 | SDL_QuitSubSystem (SDL_INIT_AUDIO); |
Kővágó, Zoltán | 81ebb07 | 2015-06-03 23:03:55 +0200 | [diff] [blame] | 434 | s->driver_created = false; |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 435 | } |
| 436 | |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 437 | static struct audio_option sdl_options[] = { |
malc | 98f9f48 | 2009-08-11 20:48:02 +0400 | [diff] [blame] | 438 | { |
| 439 | .name = "SAMPLES", |
| 440 | .tag = AUD_OPT_INT, |
| 441 | .valp = &conf.nb_samples, |
| 442 | .descr = "Size of SDL buffer in samples" |
| 443 | }, |
Juan Quintela | 2700efa | 2009-08-11 02:31:16 +0200 | [diff] [blame] | 444 | { /* End of list */ } |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 445 | }; |
| 446 | |
blueswir1 | 35f4b58 | 2008-10-06 18:08:30 +0000 | [diff] [blame] | 447 | static struct audio_pcm_ops sdl_pcm_ops = { |
Juan Quintela | 1dd3e4d | 2009-08-11 02:31:15 +0200 | [diff] [blame] | 448 | .init_out = sdl_init_out, |
| 449 | .fini_out = sdl_fini_out, |
| 450 | .run_out = sdl_run_out, |
| 451 | .write = sdl_write_out, |
| 452 | .ctl_out = sdl_ctl_out, |
bellard | 1d14ffa | 2005-10-30 18:58:22 +0000 | [diff] [blame] | 453 | }; |
| 454 | |
| 455 | struct audio_driver sdl_audio_driver = { |
Juan Quintela | bee37f3 | 2009-08-11 02:31:14 +0200 | [diff] [blame] | 456 | .name = "sdl", |
| 457 | .descr = "SDL http://www.libsdl.org", |
| 458 | .options = sdl_options, |
| 459 | .init = sdl_audio_init, |
| 460 | .fini = sdl_audio_fini, |
| 461 | .pcm_ops = &sdl_pcm_ops, |
| 462 | .can_be_default = 1, |
| 463 | .max_voices_out = 1, |
| 464 | .max_voices_in = 0, |
| 465 | .voice_size_out = sizeof (SDLVoiceOut), |
| 466 | .voice_size_in = 0 |
bellard | 85571bc | 2004-11-07 18:04:02 +0000 | [diff] [blame] | 467 | }; |