mirror of https://github.com/mpv-player/mpv
94 lines
3.9 KiB
C
94 lines
3.9 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MP_AUDIO_H
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#define MP_AUDIO_H
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#include "format.h"
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#include "chmap.h"
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// Audio data chunk
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struct mp_audio {
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int samples; // number of samples in data (per channel)
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void *planes[MP_NUM_CHANNELS]; // data buffer (one per plane)
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int rate; // sample rate
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struct mp_chmap channels; // channel layout, use mp_audio_set_*() to set
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int format; // format (AF_FORMAT_...), use mp_audio_set_format() to set
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// Redundant fields, for convenience
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int sstride; // distance between 2 samples in bytes on a plane
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// interleaved: bps * nch
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// planar: bps
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int nch; // number of channels (redundant with chmap)
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int spf; // sub-samples per sample on each plane
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int num_planes; // number of planes
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int bps; // size of sub-samples (af_fmt_to_bytes(format))
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double pts; // currently invalid within the filter chain
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// --- private
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// These do not necessarily map directly to planes[]. They can have
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// different order or count. There shouldn't be more buffers than planes.
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// If allocated[n] is NULL, allocated[n+1] must also be NULL.
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struct AVBufferRef *allocated[MP_NUM_CHANNELS];
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};
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void mp_audio_set_format(struct mp_audio *mpa, int format);
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void mp_audio_set_num_channels(struct mp_audio *mpa, int num_channels);
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void mp_audio_set_channels(struct mp_audio *mpa, const struct mp_chmap *chmap);
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void mp_audio_copy_config(struct mp_audio *dst, const struct mp_audio *src);
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bool mp_audio_config_equals(const struct mp_audio *a, const struct mp_audio *b);
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bool mp_audio_config_valid(const struct mp_audio *mpa);
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char *mp_audio_config_to_str_buf(char *buf, size_t buf_sz, struct mp_audio *mpa);
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#define mp_audio_config_to_str(m) mp_audio_config_to_str_buf((char[64]){0}, 64, (m))
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void mp_audio_force_interleaved_format(struct mp_audio *mpa);
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int mp_audio_psize(struct mp_audio *mpa);
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void mp_audio_set_null_data(struct mp_audio *mpa);
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void mp_audio_realloc(struct mp_audio *mpa, int samples);
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void mp_audio_realloc_min(struct mp_audio *mpa, int samples);
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int mp_audio_get_allocated_size(struct mp_audio *mpa);
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void mp_audio_fill_silence(struct mp_audio *mpa, int start, int length);
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void mp_audio_copy(struct mp_audio *dst, int dst_offset,
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struct mp_audio *src, int src_offset, int length);
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void mp_audio_copy_attributes(struct mp_audio *dst, struct mp_audio *src);
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void mp_audio_skip_samples(struct mp_audio *data, int samples);
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void mp_audio_clip_timestamps(struct mp_audio *f, double start, double end);
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bool mp_audio_is_writeable(struct mp_audio *data);
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int mp_audio_make_writeable(struct mp_audio *data);
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struct AVFrame;
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struct mp_audio *mp_audio_from_avframe(struct AVFrame *avframe);
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struct AVFrame *mp_audio_to_avframe_and_unref(struct mp_audio *frame);
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struct mp_audio_pool;
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struct mp_audio_pool *mp_audio_pool_create(void *ta_parent);
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struct mp_audio *mp_audio_pool_get(struct mp_audio_pool *pool,
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const struct mp_audio *fmt, int samples);
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struct mp_audio *mp_audio_pool_new_copy(struct mp_audio_pool *pool,
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struct mp_audio *frame);
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int mp_audio_pool_make_writeable(struct mp_audio_pool *pool,
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struct mp_audio *frame);
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#endif
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