The prefix is a historic remnant that probably meant "alternative". Now that the A32 bitstream reader has been dropped it makes no sense anymore.
		
			
				
	
	
		
			38 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			38 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 "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)
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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);
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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);
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}
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