mirror of
https://github.com/mpv-player/mpv
synced 2024-11-14 22:48:35 +01:00
091bfa3abf
All of these filters are considered not useful anymore by us. Some have replacements in libavfilter (useable through af_lavfi). af_center, af_extrastereo, af_karaoke, af_sinesuppress, af_sub, af_surround, af_sweep: pretty simple and useless filters which probably nobody ever wants. af_ladspa: has a replacement in libavfilter. af_hrtf: the algorithm doesn't work properly on most sources, and the implementation was buggy and complicated. (The filter was inherited from MPlayer; but even in mpv times we had to apply fixes that fixed major issues with added noise.) There is a ladspa filter if you still want to use it. af_export: I'm not even sure what this is supposed to do. Possibly it was meant for GUIs rendering audio visualizations, but it couldn't really work well. For example, the size of the audio depended on the samplerate (fixed number of samples only), and it couldn't retrieve the complete audio, only fragments. If this is really needed for GUIs, mpv should add native visualization, or a proper API for it.
90 lines
3.7 KiB
C
90 lines
3.7 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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// --- 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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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 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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