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https://github.com/mpv-player/mpv.git
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fdb300b983
This code could not be relicensed. The intention was to write new filter code (which could handle both audio and video), but that's a bit of work. Write some code that can do audio conversion (resampling, downmixing, etc.) without the old audio filter chain code in order to speed up the LGPL relicensing. If you build with --disable-libaf, nothing in audio/filter/* is compiled in. It breaks a few features, such as --volume, --af, pitch correction on speed changes, replaygain. Most likely this adds some bugs, even if --disable-libaf is not used. (How the fuck does EOF notification work again anyway?)
103 lines
4.3 KiB
C
103 lines
4.3 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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double mp_audio_end_pts(struct mp_audio *data);
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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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int mp_audio_to_avframe(struct mp_audio *frame, struct AVFrame *avframe);
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struct mp_aframe;
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struct mp_audio *mp_audio_from_aframe(struct mp_aframe *aframe);
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void mp_audio_config_from_aframe(struct mp_audio *dst, struct mp_aframe *src);
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struct mp_aframe *mp_audio_to_aframe(struct mp_audio *mpa);
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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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#include "filter/af.h"
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#endif
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