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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 "mpvcore/bstr.h"
#include "mpvcore/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,
// Has char* as argument, which contains the desired stream title.
AOCONTROL_UPDATE_STREAM_TITLE,
};
#define AOPLAY_FINAL_CHUNK 1
typedef struct ao_control_vol {
float left;
float right;
} ao_control_vol_t;
struct ao;
struct ao_driver {
bool encode;
const char *name;
const char *description;
int (*control)(struct ao *ao, enum aocontrol cmd, void *arg);
int (*init)(struct ao *ao);
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 samples, int flags);
float (*get_delay)(struct ao *ao);
void (*pause)(struct ao *ao);
void (*resume)(struct ao *ao);
// For option parsing (see vo.h)
int priv_size;
const void *priv_defaults;
const struct m_option *options;
};
/* global data used by mplayer and plugins */
struct ao {
int samplerate;
struct mp_chmap channels;
int format;
int bps; // bytes per second
int sstride; // size of a sample on each plane
// (format_size*num_channels/num_planes)
double pts; // some mplayer.c state (why is this here?)
struct bstr buffer;
int buffer_playable_size; // part of the part of the buffer the AO hasn't
// accepted yet with play()
bool probing; // if true, don't fail loudly on init
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;
struct mp_log *log; // Using e.g. "[ao/coreaudio]" as prefix
};
struct mpv_global;
struct ao *ao_init_best(struct mpv_global *global,
struct input_ctx *input_ctx,
struct encode_lavc_context *encode_lavc_ctx,
int samplerate, int format, struct mp_chmap channels);
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);
int ao_play_silence(struct ao *ao, int samples);
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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