libao2/audio_out.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <assert.h>
  23
  24 #include "config.h"
  25 #include "audio_out.h"
  26
  27 #include "mp_msg.h"
  28
  29 // there are some globals:
  30 struct ao ao_data;
  31 char *ao_subdevice = NULL;
  32
  33 extern const ao_functions_t audio_out_oss;
  34 extern const ao_functions_t audio_out_coreaudio;
  35 extern const ao_functions_t audio_out_arts;
  36 extern const ao_functions_t audio_out_esd;
  37 extern const ao_functions_t audio_out_pulse;
  38 extern const ao_functions_t audio_out_jack;
  39 extern const ao_functions_t audio_out_openal;
  40 extern const ao_functions_t audio_out_null;
  41 extern const ao_functions_t audio_out_alsa5;
  42 extern const ao_functions_t audio_out_alsa;
  43 extern const ao_functions_t audio_out_nas;
  44 extern const ao_functions_t audio_out_sdl;
  45 extern const ao_functions_t audio_out_sun;
  46 extern const ao_functions_t audio_out_sgi;
  47 extern const ao_functions_t audio_out_win32;
  48 extern const ao_functions_t audio_out_dsound;
  49 extern const ao_functions_t audio_out_kai;
  50 extern const ao_functions_t audio_out_dart;
  51 extern const ao_functions_t audio_out_ivtv;
  52 extern const ao_functions_t audio_out_v4l2;
  53 extern const ao_functions_t audio_out_mpegpes;
  54 extern const ao_functions_t audio_out_pcm;
  55 extern const ao_functions_t audio_out_pss;
  56
  57 static const ao_functions_t *const audio_out_drivers[] = {
  58 // native:
  59 #ifdef CONFIG_DIRECTX
  60     &audio_out_dsound,
  61 #endif
  62 #ifdef CONFIG_WIN32WAVEOUT
  63     &audio_out_win32,
  64 #endif
  65 #ifdef CONFIG_KAI
  66     &audio_out_kai,
  67 #endif
  68 #ifdef CONFIG_DART
  69     &audio_out_dart,
  70 #endif
  71 #ifdef CONFIG_COREAUDIO
  72     &audio_out_coreaudio,
  73 #endif
  74 #ifdef CONFIG_OSS_AUDIO
  75     &audio_out_oss,
  76 #endif
  77 #ifdef CONFIG_ALSA
  78     &audio_out_alsa,
  79 #endif
  80 #ifdef CONFIG_ALSA5
  81     &audio_out_alsa5,
  82 #endif
  83 #ifdef CONFIG_SGI_AUDIO
  84     &audio_out_sgi,
  85 #endif
  86 #ifdef CONFIG_SUN_AUDIO
  87     &audio_out_sun,
  88 #endif
  89     // wrappers:
  90 #ifdef CONFIG_ARTS
  91     &audio_out_arts,
  92 #endif
  93 #ifdef CONFIG_ESD
  94     &audio_out_esd,
  95 #endif
  96 #ifdef CONFIG_PULSE
  97     &audio_out_pulse,
  98 #endif
  99 #ifdef CONFIG_JACK
 100     &audio_out_jack,
 101 #endif
 102 #ifdef CONFIG_NAS
 103     &audio_out_nas,
 104 #endif
 105 #ifdef CONFIG_SDL
 106     &audio_out_sdl,
 107 #endif
 108 #ifdef CONFIG_OPENAL
 109     &audio_out_openal,
 110 #endif
 111     &audio_out_mpegpes,
 112 #ifdef CONFIG_IVTV
 113     &audio_out_ivtv,
 114 #endif
 115 #ifdef CONFIG_V4L2_DECODER
 116     &audio_out_v4l2,
 117 #endif
 118     &audio_out_null,
 119     // should not be auto-selected:
 120     &audio_out_pcm,
 121     NULL
 122 };
 123
 124 void list_audio_out(void)
 125 {
 126     int i=0;
 127     mp_tmsg(MSGT_AO, MSGL_INFO, "Available audio output drivers:\n");
 128     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_AUDIO_OUTPUTS\n");
 129     while (audio_out_drivers[i]) {
 130         const ao_info_t *info = audio_out_drivers[i++]->info;
 131         mp_msg(MSGT_GLOBAL, MSGL_INFO, "\t%s\t%s\n", info->short_name,
 132                info->name);
 133     }
 134     mp_msg(MSGT_GLOBAL, MSGL_INFO,"\n");
 135 }
 136
 137 struct ao *ao_create(void)
 138 {
 139     ao_data = (struct ao){.outburst = OUTBURST, .buffersize = -1};
 140     return &ao_data;
 141 }
 142
 143 void ao_init(struct ao *ao, char **ao_list)
 144 {
 145     struct ao backup = *ao;
 146
 147     if (!ao_list)
 148         goto try_defaults;
 149
 150     // first try the preferred drivers, with their optional subdevice param:
 151     while (*ao_list) {
 152         char *ao_name = *ao_list;
 153         if (!*ao_name)
 154             goto try_defaults; // empty entry means try defaults
 155         int ao_len;
 156         assert(!ao_subdevice);
 157         ao_subdevice = strchr(ao_name, ':');
 158         if (ao_subdevice) {
 159             ao_len = ao_subdevice - ao_name;
 160             ao_subdevice = strdup(ao_subdevice + 1);
 161         } else
 162             ao_len = strlen(ao_name);
 163
 164         mp_tmsg(MSGT_AO, MSGL_V,
 165                 "Trying preferred audio driver '%.*s', options '%s'\n",
 166                 ao_len, ao_name, ao_subdevice ? ao_subdevice : "[none]");
 167
 168         const ao_functions_t *audio_out = NULL;
 169         for (int i = 0; audio_out_drivers[i]; i++) {
 170             audio_out = audio_out_drivers[i];
 171             if (!strncmp(audio_out->info->short_name, ao_name, ao_len))
 172                 break;
 173             audio_out = NULL;
 174         }
 175         if (audio_out) {
 176             // name matches, try it
 177             if (audio_out->init(ao->samplerate, ao->channels, ao->format, 0)) {
 178                 ao->driver = audio_out;
 179                 ao->initialized = true;
 180                 return;
 181             }
 182             mp_tmsg(MSGT_AO, MSGL_WARN,
 183                     "Failed to initialize audio driver '%s'\n", ao_name);
 184             *ao = backup;
 185         } else
 186             mp_tmsg(MSGT_AO, MSGL_WARN, "No such audio driver '%.*s'\n",
 187                     ao_len, ao_name);
 188         free(ao_subdevice);
 189         ao_subdevice = NULL;
 190         ++ao_list;
 191     }
 192     return;
 193
 194  try_defaults:
 195     mp_tmsg(MSGT_AO, MSGL_V, "Trying every known audio driver...\n");
 196
 197     // now try the rest...
 198     for (int i = 0; audio_out_drivers[i]; i++) {
 199         const ao_functions_t *audio_out = audio_out_drivers[i];
 200         if (audio_out->init(ao->samplerate, ao->channels, ao->format, 0)) {
 201             ao->initialized = true;
 202             ao->driver = audio_out;
 203             return;
 204         }
 205         *ao = backup;
 206     }
 207     return;
 208 }
 209
 210 void ao_uninit(struct ao *ao, bool drain_audio)
 211 {
 212     if (ao->initialized)
 213         ao->driver->uninit(drain_audio);
 214     ao->initialized = false;
 215     free(ao_subdevice);
 216     ao_subdevice = NULL;
 217 }
 218
 219 int ao_play(struct ao *ao, void *data, int len, int flags)
 220 {
 221     return ao->driver->play(data, len, flags);
 222 }
 223
 224 int ao_control(struct ao *ao, int cmd, void *arg)
 225 {
 226     return ao->driver->control(cmd, arg);
 227 }
 228
 229 double ao_get_delay(struct ao *ao)
 230 {
 231     return ao->driver->get_delay();
 232 }
 233
 234 int ao_get_space(struct ao *ao)
 235 {
 236     return ao->driver->get_space();
 237 }
 238
 239 void ao_reset(struct ao *ao)
 240 {
 241     ao->driver->reset();
 242 }
 243
 244 void ao_pause(struct ao *ao)
 245 {
 246     ao->driver->pause();
 247 }
 248
 249 void ao_resume(struct ao *ao)
 250 {
 251     ao->driver->resume();
 252 }