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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_AUDIO_OUT_H
#define MPLAYER_AUDIO_OUT_H
#include <stdbool.h>
#include "core/bstr.h"
#include "core/mp_common.h"
#include "audio/chmap.h"
#include "audio/chmap_sel.h"
enum aocontrol {
// _VOLUME commands take struct ao_control_vol pointer for input/output.
// If there's only one volume, SET should use average of left/right.
AOCONTROL_GET_VOLUME,
AOCONTROL_SET_VOLUME,
// _MUTE commands take a pointer to bool
AOCONTROL_GET_MUTE,
AOCONTROL_SET_MUTE,
};
#define AOPLAY_FINAL_CHUNK 1
typedef struct ao_control_vol {
float left;
float right;
} ao_control_vol_t;
typedef struct ao_info {
/* driver name ("Matrox Millennium G200/G400" */
const char *name;
/* short name (for config strings) ("mga") */
const char *short_name;
/* author ("Aaron Holtzman <aholtzma@ess.engr.uvic.ca>") */
const char *author;
/* any additional comments */
const char *comment;
} ao_info_t;
/* interface towards mplayer and */
typedef struct ao_old_functions {
int (*control)(int cmd, void *arg);
int (*init)(int rate, const struct mp_chmap *channels, int format, int flags);
void (*uninit)(int immed);
void (*reset)(void);
int (*get_space)(void);
int (*play)(void *data, int len, int flags);
float (*get_delay)(void);
void (*pause)(void);
void (*resume)(void);
} ao_functions_t;
struct ao;
struct ao_driver {
bool encode;
const struct ao_info *info;
const struct ao_old_functions *old_functions;
int (*control)(struct ao *ao, enum aocontrol cmd, void *arg);
int (*init)(struct ao *ao, char *params);
void (*uninit)(struct ao *ao, bool cut_audio);
void (*reset)(struct ao*ao);
int (*get_space)(struct ao *ao);
int (*play)(struct ao *ao, void *data, int len, int flags);
float (*get_delay)(struct ao *ao);
void (*pause)(struct ao *ao);
void (*resume)(struct ao *ao);
};
/* global data used by mplayer and plugins */
struct ao {
int samplerate;
struct mp_chmap channels;
int format;
int bps; // bytes per second
double pts; // some mplayer.c state (why is this here?)
struct bstr buffer;
int buffer_playable_size;
bool probing; // if true, don't fail loudly on init
bool initialized;
bool untimed;
bool no_persistent_volume; // the AO does the equivalent of af_volume
bool per_application_mixer; // like above, but volume persists (per app)
const struct ao_driver *driver;
void *priv;
struct encode_lavc_context *encode_lavc_ctx;
struct MPOpts *opts;
struct input_ctx *input_ctx;
};
extern char *ao_subdevice;
void list_audio_out(void);
struct ao *ao_create(struct MPOpts *opts, struct input_ctx *input);
void ao_init(struct ao *ao, char **ao_list);
void ao_uninit(struct ao *ao, bool cut_audio);
int ao_play(struct ao *ao, void *data, int len, int flags);
int ao_control(struct ao *ao, enum aocontrol cmd, void *arg);
double ao_get_delay(struct ao *ao);
int ao_get_space(struct ao *ao);
void ao_reset(struct ao *ao);
void ao_pause(struct ao *ao);
void ao_resume(struct ao *ao);
bool ao_chmap_sel_adjust(struct ao *ao, const struct mp_chmap_sel *s,
struct mp_chmap *map);
bool ao_chmap_sel_get_def(struct ao *ao, const struct mp_chmap_sel *s,
struct mp_chmap *map, int num);
#endif /* MPLAYER_AUDIO_OUT_H */
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