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https://gitee.com/openharmony/third_party_ffmpeg
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a16577d985
This is essentially a MS GSM decoder extension that supports more sampling rates and lower bitrates. Signed-off-by: Anton Khirnov <anton@khirnov.net>
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/*
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* GSM common header
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_GSM_H
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#define AVCODEC_GSM_H
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/* bytes per block */
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#define GSM_BLOCK_SIZE 33
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#define GSM_MS_BLOCK_SIZE 65
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#define MSN_MIN_BLOCK_SIZE 41
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/* samples per block */
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#define GSM_FRAME_SIZE 160
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enum GSMModes {
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GSM_13000 = 0,
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MSN_12400,
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MSN_11800,
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MSN_11200,
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MSN_10600,
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MSN_10000,
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MSN_9400,
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MSN_8800,
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MSN_8200,
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NUM_GSM_MODES
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};
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#endif /* AVCODEC_GSM_H */
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