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 #include "bstr.h"
  25
  26 typedef struct ao_info {
  27     /* driver name ("Matrox Millennium G200/G400" */
  28     const char *name;
  29     /* short name (for config strings) ("mga") */
  30     const char *short_name;
  31     /* author ("Aaron Holtzman <aholtzma@ess.engr.uvic.ca>") */
  32     const char *author;
  33     /* any additional comments */
  34     const char *comment;
  35 } ao_info_t;
  36
  37 /* interface towards mplayer and */
  38 typedef struct ao_old_functions {
  39     int (*control)(int cmd, void *arg);
  40     int (*init)(int rate, int channels, int format, int flags);
  41     void (*uninit)(int immed);
  42     void (*reset)(void);
  43     int (*get_space)(void);
  44     int (*play)(void *data, int len, int flags);
  45     float (*get_delay)(void);
  46     void (*pause)(void);
  47     void (*resume)(void);
  48 } ao_functions_t;
  49
  50 struct ao;
  51
  52 struct ao_driver {
  53     bool is_new;
  54     const struct ao_info *info;
  55     const struct ao_old_functions *old_functions;
  56     int (*control)(struct ao *ao, int cmd, void *arg);
  57     int (*init)(struct ao *ao, char *params);
  58     void (*uninit)(struct ao *ao, bool cut_audio);
  59     void (*reset)(struct ao*ao);
  60     int (*get_space)(struct ao *ao);
  61     int (*play)(struct ao *ao, void *data, int len, int flags);
  62     float (*get_delay)(struct ao *ao);
  63     void (*pause)(struct ao *ao);
  64     void (*resume)(struct ao *ao);
  65 };
  66
  67 /* global data used by mplayer and plugins */
  68 struct ao {
  69     int samplerate;
  70     int channels;
  71     int format;
  72     int bps;
  73     int outburst;
  74     int buffersize;
  75     int brokenpts;
  76     double pts;
  77     struct bstr buffer;
  78     int buffer_playable_size;
  79     bool initialized;
  80     bool untimed;
  81     const struct ao_driver *driver;
  82     void *priv;
  83     struct MPOpts *opts;
  84     struct input_ctx *input_ctx;
  85 };
  86
  87 extern char *ao_subdevice;
  88
  89 void list_audio_out(void);
  90
  91 #define CONTROL_OK 1
  92 #define CONTROL_TRUE 1
  93 #define CONTROL_FALSE 0
  94 #define CONTROL_UNKNOWN -1
  95 #define CONTROL_ERROR -2
  96 #define CONTROL_NA -3
  97
  98 #define AOCONTROL_SET_DEVICE 1
  99 #define AOCONTROL_GET_DEVICE 2
 100 #define AOCONTROL_QUERY_FORMAT 3 /* test for availabilty of a format */
 101 #define AOCONTROL_GET_VOLUME 4
 102 #define AOCONTROL_SET_VOLUME 5
 103 #define AOCONTROL_SET_PLUGIN_DRIVER 6
 104 #define AOCONTROL_SET_PLUGIN_LIST 7
 105
 106 #define AOPLAY_FINAL_CHUNK 1
 107
 108 typedef struct ao_control_vol {
 109     float left;
 110     float right;
 111 } ao_control_vol_t;
 112
 113 struct ao *ao_create(struct MPOpts *opts, struct input_ctx *input);
 114 void ao_init(struct ao *ao, char **ao_list);
 115 void ao_uninit(struct ao *ao, bool cut_audio);
 116 int ao_play(struct ao *ao, void *data, int len, int flags);
 117 int ao_control(struct ao *ao, int cmd, void *arg);
 118 double ao_get_delay(struct ao *ao);
 119 int ao_get_space(struct ao *ao);
 120 void ao_reset(struct ao *ao);
 121 void ao_pause(struct ao *ao);
 122 void ao_resume(struct ao *ao);
 123
 124 int old_ao_control(struct ao *ao, int cmd, void *arg);
 125 int old_ao_init(struct ao *ao, char *params);
 126 void old_ao_uninit(struct ao *ao, bool cut_audio);
 127 void old_ao_reset(struct ao*ao);
 128 int old_ao_get_space(struct ao *ao);
 129 int old_ao_play(struct ao *ao, void *data, int len, int flags);
 130 float old_ao_get_delay(struct ao *ao);
 131 void old_ao_pause(struct ao *ao);
 132 void old_ao_resume(struct ao *ao);
 133
 134 #endif /* MPLAYER_AUDIO_OUT_H */