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https://github.com/mpv-player/mpv
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279f4b59dc
The libavresample version of the current Libav stable release lacks the
avresample_set_channel_mapping() function. (FFmpeg's libswresample seems
to be fine, because they added swr_set_channel_mapping() first.)
Add a cheap/slow workaround to do channel reordering on our own. We
don't use the recently removed MPlayer code (see commit 586b75a),
because that is not generic enough.
The functionality should be the same as with full-featured
libavresample, and any differences are bugs. It's probably slower,
though.
37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
/*
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* common functions for reordering audio channels
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*
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* Copyright (C) 2007 Ulion <ulion A gmail P com>
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*
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* This file is part of MPlayer.
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*
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* MPlayer 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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* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_REORDER_CH_H
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#define MPLAYER_REORDER_CH_H
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#include <inttypes.h>
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void reorder_to_planar(void *restrict out, const void *restrict in,
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size_t size, size_t nchan, size_t nmemb);
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void reorder_to_packed(uint8_t *out, uint8_t **in,
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size_t size, size_t nchan, size_t nmemb);
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void reorder_channels(void *restrict data, int *restrict ch_order,
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size_t sample_size, size_t num_ch, size_t num_frames);
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#endif /* MPLAYER_REORDER_CH_H */
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