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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>
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/*
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* gsm 06.10 decoder, Microsoft variant
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* Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
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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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#define BITSTREAM_READER_LE
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#include "avcodec.h"
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#include "msgsmdec.h"
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#include "gsm.h"
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#include "gsmdec_template.c"
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int ff_msgsm_decode_block(AVCodecContext *avctx, int16_t *samples,
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const uint8_t *buf, int mode)
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{
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int res;
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GetBitContext gb;
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init_get_bits(&gb, buf, GSM_MS_BLOCK_SIZE * 8);
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res = gsm_decode_block(avctx, samples, &gb, mode);
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if (res < 0)
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return res;
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return gsm_decode_block(avctx, samples + GSM_FRAME_SIZE, &gb, mode);
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}
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