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Diffstat (limited to 'src/opus-1.0.2/silk/decode_pulses.c')
| -rw-r--r-- | src/opus-1.0.2/silk/decode_pulses.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/src/opus-1.0.2/silk/decode_pulses.c b/src/opus-1.0.2/silk/decode_pulses.c deleted file mode 100644 index 1c781a0b..00000000 --- a/src/opus-1.0.2/silk/decode_pulses.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" - -/*********************************************/ -/* Decode quantization indices of excitation */ -/*********************************************/ -void silk_decode_pulses( - ec_dec *psRangeDec, /* I/O Compressor data structure */ - opus_int pulses[], /* O Excitation signal */ - const opus_int signalType, /* I Sigtype */ - const opus_int quantOffsetType, /* I quantOffsetType */ - const opus_int frame_length /* I Frame length */ -) -{ - opus_int i, j, k, iter, abs_q, nLS, RateLevelIndex; - opus_int sum_pulses[ MAX_NB_SHELL_BLOCKS ], nLshifts[ MAX_NB_SHELL_BLOCKS ]; - opus_int *pulses_ptr; - const opus_uint8 *cdf_ptr; - - /*********************/ - /* Decode rate level */ - /*********************/ - RateLevelIndex = ec_dec_icdf( psRangeDec, silk_rate_levels_iCDF[ signalType >> 1 ], 8 ); - - /* Calculate number of shell blocks */ - silk_assert( 1 << LOG2_SHELL_CODEC_FRAME_LENGTH == SHELL_CODEC_FRAME_LENGTH ); - iter = silk_RSHIFT( frame_length, LOG2_SHELL_CODEC_FRAME_LENGTH ); - if( iter * SHELL_CODEC_FRAME_LENGTH < frame_length ) { - silk_assert( frame_length == 12 * 10 ); /* Make sure only happens for 10 ms @ 12 kHz */ - iter++; - } - - /***************************************************/ - /* Sum-Weighted-Pulses Decoding */ - /***************************************************/ - cdf_ptr = silk_pulses_per_block_iCDF[ RateLevelIndex ]; - for( i = 0; i < iter; i++ ) { - nLshifts[ i ] = 0; - sum_pulses[ i ] = ec_dec_icdf( psRangeDec, cdf_ptr, 8 ); - - /* LSB indication */ - while( sum_pulses[ i ] == MAX_PULSES + 1 ) { - nLshifts[ i ]++; - /* When we've already got 10 LSBs, we shift the table to not allow (MAX_PULSES + 1) */ - sum_pulses[ i ] = ec_dec_icdf( psRangeDec, - silk_pulses_per_block_iCDF[ N_RATE_LEVELS - 1] + ( nLshifts[ i ] == 10 ), 8 ); - } - } - - /***************************************************/ - /* Shell decoding */ - /***************************************************/ - for( i = 0; i < iter; i++ ) { - if( sum_pulses[ i ] > 0 ) { - silk_shell_decoder( &pulses[ silk_SMULBB( i, SHELL_CODEC_FRAME_LENGTH ) ], psRangeDec, sum_pulses[ i ] ); - } else { - silk_memset( &pulses[ silk_SMULBB( i, SHELL_CODEC_FRAME_LENGTH ) ], 0, SHELL_CODEC_FRAME_LENGTH * sizeof( opus_int ) ); - } - } - - /***************************************************/ - /* LSB Decoding */ - /***************************************************/ - for( i = 0; i < iter; i++ ) { - if( nLshifts[ i ] > 0 ) { - nLS = nLshifts[ i ]; - pulses_ptr = &pulses[ silk_SMULBB( i, SHELL_CODEC_FRAME_LENGTH ) ]; - for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) { - abs_q = pulses_ptr[ k ]; - for( j = 0; j < nLS; j++ ) { - abs_q = silk_LSHIFT( abs_q, 1 ); - abs_q += ec_dec_icdf( psRangeDec, silk_lsb_iCDF, 8 ); - } - pulses_ptr[ k ] = abs_q; - } - /* Mark the number of pulses non-zero for sign decoding. */ - sum_pulses[ i ] |= nLS << 5; - } - } - - /****************************************/ - /* Decode and add signs to pulse signal */ - /****************************************/ - silk_decode_signs( psRangeDec, pulses, frame_length, signalType, quantOffsetType, sum_pulses ); -} |