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Diffstat (limited to 'src/opus-1.1/silk/code_signs.c')
| -rw-r--r-- | src/opus-1.1/silk/code_signs.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/src/opus-1.1/silk/code_signs.c b/src/opus-1.1/silk/code_signs.c deleted file mode 100644 index 0419ea26..00000000 --- a/src/opus-1.1/silk/code_signs.c +++ /dev/null @@ -1,115 +0,0 @@ -/*********************************************************************** -Copyright (c) 2006-2011, Skype Limited. All rights reserved. -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions -are met: -- Redistributions of source code must retain the above copyright notice, -this list of conditions and the following disclaimer. -- Redistributions in binary form must reproduce the above copyright -notice, this list of conditions and the following disclaimer in the -documentation and/or other materials provided with the distribution. -- Neither the name of Internet Society, IETF or IETF Trust, nor the -names of specific contributors, may be used to endorse or promote -products derived from this software without specific prior written -permission. -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -POSSIBILITY OF SUCH DAMAGE. -***********************************************************************/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "main.h" - -/*#define silk_enc_map(a) ((a) > 0 ? 1 : 0)*/ -/*#define silk_dec_map(a) ((a) > 0 ? 1 : -1)*/ -/* shifting avoids if-statement */ -#define silk_enc_map(a) ( silk_RSHIFT( (a), 15 ) + 1 ) -#define silk_dec_map(a) ( silk_LSHIFT( (a), 1 ) - 1 ) - -/* Encodes signs of excitation */ -void silk_encode_signs( - ec_enc *psRangeEnc, /* I/O Compressor data structure */ - const opus_int8 pulses[], /* I pulse signal */ - opus_int length, /* I length of input */ - const opus_int signalType, /* I Signal type */ - const opus_int quantOffsetType, /* I Quantization offset type */ - const opus_int sum_pulses[ MAX_NB_SHELL_BLOCKS ] /* I Sum of absolute pulses per block */ -) -{ - opus_int i, j, p; - opus_uint8 icdf[ 2 ]; - const opus_int8 *q_ptr; - const opus_uint8 *icdf_ptr; - - icdf[ 1 ] = 0; - q_ptr = pulses; - i = silk_SMULBB( 7, silk_ADD_LSHIFT( quantOffsetType, signalType, 1 ) ); - icdf_ptr = &silk_sign_iCDF[ i ]; - length = silk_RSHIFT( length + SHELL_CODEC_FRAME_LENGTH/2, LOG2_SHELL_CODEC_FRAME_LENGTH ); - for( i = 0; i < length; i++ ) { - p = sum_pulses[ i ]; - if( p > 0 ) { - icdf[ 0 ] = icdf_ptr[ silk_min( p & 0x1F, 6 ) ]; - for( j = 0; j < SHELL_CODEC_FRAME_LENGTH; j++ ) { - if( q_ptr[ j ] != 0 ) { - ec_enc_icdf( psRangeEnc, silk_enc_map( q_ptr[ j ]), icdf, 8 ); - } - } - } - q_ptr += SHELL_CODEC_FRAME_LENGTH; - } -} - -/* Decodes signs of excitation */ -void silk_decode_signs( - ec_dec *psRangeDec, /* I/O Compressor data structure */ - opus_int pulses[], /* I/O pulse signal */ - opus_int length, /* I length of input */ - const opus_int signalType, /* I Signal type */ - const opus_int quantOffsetType, /* I Quantization offset type */ - const opus_int sum_pulses[ MAX_NB_SHELL_BLOCKS ] /* I Sum of absolute pulses per block */ -) -{ - opus_int i, j, p; - opus_uint8 icdf[ 2 ]; - opus_int *q_ptr; - const opus_uint8 *icdf_ptr; - - icdf[ 1 ] = 0; - q_ptr = pulses; - i = silk_SMULBB( 7, silk_ADD_LSHIFT( quantOffsetType, signalType, 1 ) ); - icdf_ptr = &silk_sign_iCDF[ i ]; - length = silk_RSHIFT( length + SHELL_CODEC_FRAME_LENGTH/2, LOG2_SHELL_CODEC_FRAME_LENGTH ); - for( i = 0; i < length; i++ ) { - p = sum_pulses[ i ]; - if( p > 0 ) { - icdf[ 0 ] = icdf_ptr[ silk_min( p & 0x1F, 6 ) ]; - for( j = 0; j < SHELL_CODEC_FRAME_LENGTH; j++ ) { - if( q_ptr[ j ] > 0 ) { - /* attach sign */ -#if 0 - /* conditional implementation */ - if( ec_dec_icdf( psRangeDec, icdf, 8 ) == 0 ) { - q_ptr[ j ] = -q_ptr[ j ]; - } -#else - /* implementation with shift, subtraction, multiplication */ - q_ptr[ j ] *= silk_dec_map( ec_dec_icdf( psRangeDec, icdf, 8 ) ); -#endif - } - } - } - q_ptr += SHELL_CODEC_FRAME_LENGTH; - } -} |