libao2/audio_out.h

   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 #ifndef MPLAYER_AUDIO_OUT_H
  20 #define MPLAYER_AUDIO_OUT_H
  21
  22 #include <stdbool.h>
  23
  24 typedef struct ao_info {
  25     /* driver name ("Matrox Millennium G200/G400" */
  26     const char *name;
  27     /* short name (for config strings) ("mga") */
  28     const char *short_name;
  29     /* author ("Aaron Holtzman <aholtzma@ess.engr.uvic.ca>") */
  30     const char *author;
  31     /* any additional comments */
  32     const char *comment;
  33 } ao_info_t;
  34
  35 /* interface towards mplayer and */
  36 typedef struct ao_functions {
  37     const ao_info_t *info;
  38     int (*control)(int cmd, void *arg);
  39     int (*init)(int rate, int channels, int format, int flags);
  40     void (*uninit)(int immed);
  41     void (*reset)(void);
  42     int (*get_space)(void);
  43     int (*play)(void *data, int len, int flags);
  44     float (*get_delay)(void);
  45     void (*pause)(void);
  46     void (*resume)(void);
  47 } ao_functions_t;
  48
  49 /* global data used by mplayer and plugins */
  50 struct ao {
  51     int samplerate;
  52     int channels;
  53     int format;
  54     int bps;
  55     int outburst;
  56     int buffersize;
  57     int pts;
  58     bool initialized;
  59     const struct ao_functions *driver;
  60 };
  61
  62 extern char *ao_subdevice;
  63
  64 void list_audio_out(void);
  65
  66 #define CONTROL_OK 1
  67 #define CONTROL_TRUE 1
  68 #define CONTROL_FALSE 0
  69 #define CONTROL_UNKNOWN -1
  70 #define CONTROL_ERROR -2
  71 #define CONTROL_NA -3
  72
  73 #define AOCONTROL_SET_DEVICE 1
  74 #define AOCONTROL_GET_DEVICE 2
  75 #define AOCONTROL_QUERY_FORMAT 3 /* test for availabilty of a format */
  76 #define AOCONTROL_GET_VOLUME 4
  77 #define AOCONTROL_SET_VOLUME 5
  78 #define AOCONTROL_SET_PLUGIN_DRIVER 6
  79 #define AOCONTROL_SET_PLUGIN_LIST 7
  80
  81 #define AOPLAY_FINAL_CHUNK 1
  82
  83 typedef struct ao_control_vol {
  84     float left;
  85     float right;
  86 } ao_control_vol_t;
  87
  88 struct ao *ao_create(void);
  89 void ao_init(struct ao *ao, char **ao_list);
  90 void ao_uninit(struct ao *ao, bool drain_audio);
  91 int ao_play(struct ao *ao, void *data, int len, int flags);
  92 int ao_control(struct ao *ao, int cmd, void *arg);
  93 double ao_get_delay(struct ao *ao);
  94 int ao_get_space(struct ao *ao);
  95 void ao_reset(struct ao *ao);
  96 void ao_pause(struct ao *ao);
  97 void ao_resume(struct ao *ao);
  98
  99 #endif /* MPLAYER_AUDIO_OUT_H */