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 typedef struct ao_info_s
  23 {
  24         /* driver name ("Matrox Millennium G200/G400" */
  25         const char *name;
  26         /* short name (for config strings) ("mga") */
  27         const char *short_name;
  28         /* author ("Aaron Holtzman <aholtzma@ess.engr.uvic.ca>") */
  29         const char *author;
  30         /* any additional comments */
  31         const char *comment;
  32 } ao_info_t;
  33
  34 /* interface towards mplayer and */
  35 typedef struct ao_functions_s
  36 {
  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 typedef struct ao_data_s
  51 {
  52   int samplerate;
  53   int channels;
  54   int format;
  55   int bps;
  56   int outburst;
  57   int buffersize;
  58   int pts;
  59 } ao_data_t;
  60
  61 extern char *ao_subdevice;
  62 extern ao_data_t ao_data;
  63
  64 void list_audio_out(void);
  65 const ao_functions_t* init_best_audio_out(char** ao_list,int use_plugin,int rate,int channels,int format,int flags);
  66
  67 // NULL terminated array of all drivers
  68 extern const ao_functions_t* const audio_out_drivers[];
  69
  70 #define CONTROL_OK 1
  71 #define CONTROL_TRUE 1
  72 #define CONTROL_FALSE 0
  73 #define CONTROL_UNKNOWN -1
  74 #define CONTROL_ERROR -2
  75 #define CONTROL_NA -3
  76
  77 #define AOCONTROL_SET_DEVICE 1
  78 #define AOCONTROL_GET_DEVICE 2
  79 #define AOCONTROL_QUERY_FORMAT 3 /* test for availabilty of a format */
  80 #define AOCONTROL_GET_VOLUME 4
  81 #define AOCONTROL_SET_VOLUME 5
  82 #define AOCONTROL_SET_PLUGIN_DRIVER 6
  83 #define AOCONTROL_SET_PLUGIN_LIST 7
  84
  85 #define AOPLAY_FINAL_CHUNK 1
  86
  87 typedef struct ao_control_vol_s {
  88         float left;
  89         float right;
  90 } ao_control_vol_t;
  91
  92 #endif /* MPLAYER_AUDIO_OUT_H */