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77fab7603a
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0186 http://www.mega-nerd.com/libsndfile/libsndfile-1.0.19.tar.gz This will likely require a fresh boostrap to updated source checkouts. git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13415 d0543943-73ff-0310-b7d9-9358b9ac24b2
92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
/*
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** Copyright (C) 1999-2009 Erik de Castro Lopo <erikd@mega-nerd.com>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation; either version 2.1 of the License, or
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** (at your option) any later version.
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**
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** This program 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 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 License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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** This file is not the same as the original file from Sun Microsystems. Nearly
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** all the original definitions and function prototypes that were in the file
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** of this name have been moved to g72x_priv.h.
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*/
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#ifndef G72X_HEADER_FILE
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#define G72X_HEADER_FILE
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/*
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** Number of samples per block to process.
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** Must be a common multiple of possible bits per sample : 2, 3, 4, 5 and 8.
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*/
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#define G72x_BLOCK_SIZE (3 * 5 * 8)
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/*
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** Identifiers for the differing kinds of G72x ADPCM codecs.
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** The identifiers also define the number of encoded bits per sample.
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*/
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enum
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{ G723_16_BITS_PER_SAMPLE = 2,
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G723_24_BITS_PER_SAMPLE = 3,
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G723_40_BITS_PER_SAMPLE = 5,
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G721_32_BITS_PER_SAMPLE = 4,
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G721_40_BITS_PER_SAMPLE = 5,
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G723_16_SAMPLES_PER_BLOCK = G72x_BLOCK_SIZE,
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G723_24_SAMPLES_PER_BLOCK = G723_24_BITS_PER_SAMPLE * (G72x_BLOCK_SIZE / G723_24_BITS_PER_SAMPLE),
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G723_40_SAMPLES_PER_BLOCK = G723_40_BITS_PER_SAMPLE * (G72x_BLOCK_SIZE / G723_40_BITS_PER_SAMPLE),
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G721_32_SAMPLES_PER_BLOCK = G72x_BLOCK_SIZE,
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G721_40_SAMPLES_PER_BLOCK = G721_40_BITS_PER_SAMPLE * (G72x_BLOCK_SIZE / G721_40_BITS_PER_SAMPLE),
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G723_16_BYTES_PER_BLOCK = (G723_16_BITS_PER_SAMPLE * G72x_BLOCK_SIZE) / 8,
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G723_24_BYTES_PER_BLOCK = (G723_24_BITS_PER_SAMPLE * G72x_BLOCK_SIZE) / 8,
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G723_40_BYTES_PER_BLOCK = (G723_40_BITS_PER_SAMPLE * G72x_BLOCK_SIZE) / 8,
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G721_32_BYTES_PER_BLOCK = (G721_32_BITS_PER_SAMPLE * G72x_BLOCK_SIZE) / 8,
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G721_40_BYTES_PER_BLOCK = (G721_40_BITS_PER_SAMPLE * G72x_BLOCK_SIZE) / 8
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} ;
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/* Forward declaration of of g72x_state. */
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struct g72x_state ;
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/* External function definitions. */
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struct g72x_state * g72x_reader_init (int codec, int *blocksize, int *samplesperblock) ;
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struct g72x_state * g72x_writer_init (int codec, int *blocksize, int *samplesperblock) ;
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/*
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** Initialize the ADPCM state table for the given codec.
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** Return 0 on success, 1 on fail.
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*/
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int g72x_decode_block (struct g72x_state *pstate, const unsigned char *block, short *samples) ;
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/*
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** The caller fills data->block with data->bytes bytes before calling the
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** function. The value data->bytes must be an integer multiple of
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** data->blocksize and be <= data->max_bytes.
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** When it returns, the caller can read out data->samples samples.
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*/
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int g72x_encode_block (struct g72x_state *pstate, short *samples, unsigned char *block) ;
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/*
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** The caller fills state->samples some integer multiple data->samples_per_block
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** (up to G72x_BLOCK_SIZE) samples before calling the function.
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** When it returns, the caller can read out bytes encoded bytes.
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*/
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#endif /* !G72X_HEADER_FILE */
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