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/*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MP_AUDIO_H
#define MP_AUDIO_H
#include "format.h"
#include "chmap.h"
// Audio data chunk
struct mp_audio {
int samples; // number of samples in data (per channel)
void *planes[MP_NUM_CHANNELS]; // data buffer (one per plane)
int rate; // sample rate
struct mp_chmap channels; // channel layout, use mp_audio_set_*() to set
int format; // format (AF_FORMAT_...), use mp_audio_set_format() to set
// Redundant fields, for convenience
int sstride; // distance between 2 samples in bytes on a plane
// interleaved: bps * nch
// planar: bps
int nch; // number of channels (redundant with chmap)
int spf; // sub-samples per sample on each plane
int num_planes; // number of planes
int bps; // size of sub-samples (af_fmt_to_bytes(format))
double pts; // currently invalid within the filter chain
// --- private
// These do not necessarily map directly to planes[]. They can have
// different order or count. There shouldn't be more buffers than planes.
// If allocated[n] is NULL, allocated[n+1] must also be NULL.
struct AVBufferRef *allocated[MP_NUM_CHANNELS];
};
void mp_audio_set_format(struct mp_audio *mpa, int format);
void mp_audio_set_num_channels(struct mp_audio *mpa, int num_channels);
void mp_audio_set_channels(struct mp_audio *mpa, const struct mp_chmap *chmap);
void mp_audio_copy_config(struct mp_audio *dst, const struct mp_audio *src);
bool mp_audio_config_equals(const struct mp_audio *a, const struct mp_audio *b);
bool mp_audio_config_valid(const struct mp_audio *mpa);
char *mp_audio_config_to_str_buf(char *buf, size_t buf_sz, struct mp_audio *mpa);
#define mp_audio_config_to_str(m) mp_audio_config_to_str_buf((char[64]){0}, 64, (m))
void mp_audio_force_interleaved_format(struct mp_audio *mpa);
int mp_audio_psize(struct mp_audio *mpa);
void mp_audio_set_null_data(struct mp_audio *mpa);
void mp_audio_realloc(struct mp_audio *mpa, int samples);
void mp_audio_realloc_min(struct mp_audio *mpa, int samples);
int mp_audio_get_allocated_size(struct mp_audio *mpa);
void mp_audio_fill_silence(struct mp_audio *mpa, int start, int length);
void mp_audio_copy(struct mp_audio *dst, int dst_offset,
struct mp_audio *src, int src_offset, int length);
void mp_audio_copy_attributes(struct mp_audio *dst, struct mp_audio *src);
void mp_audio_skip_samples(struct mp_audio *data, int samples);
void mp_audio_clip_timestamps(struct mp_audio *f, double start, double end);
bool mp_audio_is_writeable(struct mp_audio *data);
int mp_audio_make_writeable(struct mp_audio *data);
struct AVFrame;
struct mp_audio *mp_audio_from_avframe(struct AVFrame *avframe);
struct AVFrame *mp_audio_to_avframe_and_unref(struct mp_audio *frame);
struct mp_audio_pool;
struct mp_audio_pool *mp_audio_pool_create(void *ta_parent);
struct mp_audio *mp_audio_pool_get(struct mp_audio_pool *pool,
const struct mp_audio *fmt, int samples);
struct mp_audio *mp_audio_pool_new_copy(struct mp_audio_pool *pool,
struct mp_audio *frame);
int mp_audio_pool_make_writeable(struct mp_audio_pool *pool,
struct mp_audio *frame);
#endif
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