mirror of
https://github.com/mpv-player/mpv
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d2e7467eb2
Based on earlier work by Stefano Pigozzi. There are 2 changes: 1. Instead of mp_audio.audio, mp_audio.planes[0] must be used. 2. mp_audio.len used to contain the size of the audio in bytes. Now mp_audio.samples must be used. (Where 1 sample is the smallest unit of audio that covers all channels.) Also, some filters need changes to reject non-interleaved formats properly. Nothing uses the non-interleaved features yet, but this is needed so that things don't just break when doing so.
68 lines
2.7 KiB
C
68 lines
2.7 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_fmt2bits(format) / 8)
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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_old(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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char *mp_audio_fmt_to_str(int srate, const struct mp_chmap *chmap, int format);
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char *mp_audio_config_to_str(struct mp_audio *mpa);
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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_skip_samples(struct mp_audio *data, int samples);
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#endif
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