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Diffstat (limited to 'src/opus-1.1/silk/encode_pulses.c')
| -rw-r--r-- | src/opus-1.1/silk/encode_pulses.c | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/src/opus-1.1/silk/encode_pulses.c b/src/opus-1.1/silk/encode_pulses.c deleted file mode 100644 index a4501438..00000000 --- a/src/opus-1.1/silk/encode_pulses.c +++ /dev/null @@ -1,206 +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" -#include "stack_alloc.h" - -/*********************************************/ -/* Encode quantization indices of excitation */ -/*********************************************/ - -static OPUS_INLINE opus_int combine_and_check( /* return ok */ - opus_int *pulses_comb, /* O */ - const opus_int *pulses_in, /* I */ - opus_int max_pulses, /* I max value for sum of pulses */ - opus_int len /* I number of output values */ -) -{ - opus_int k, sum; - - for( k = 0; k < len; k++ ) { - sum = pulses_in[ 2 * k ] + pulses_in[ 2 * k + 1 ]; - if( sum > max_pulses ) { - return 1; - } - pulses_comb[ k ] = sum; - } - - return 0; -} - -/* Encode quantization indices of excitation */ -void silk_encode_pulses( - ec_enc *psRangeEnc, /* I/O compressor data structure */ - const opus_int signalType, /* I Signal type */ - const opus_int quantOffsetType, /* I quantOffsetType */ - opus_int8 pulses[], /* I quantization indices */ - const opus_int frame_length /* I Frame length */ -) -{ - opus_int i, k, j, iter, bit, nLS, scale_down, RateLevelIndex = 0; - opus_int32 abs_q, minSumBits_Q5, sumBits_Q5; - VARDECL( opus_int, abs_pulses ); - VARDECL( opus_int, sum_pulses ); - VARDECL( opus_int, nRshifts ); - opus_int pulses_comb[ 8 ]; - opus_int *abs_pulses_ptr; - const opus_int8 *pulses_ptr; - const opus_uint8 *cdf_ptr; - const opus_uint8 *nBits_ptr; - SAVE_STACK; - - silk_memset( pulses_comb, 0, 8 * sizeof( opus_int ) ); /* Fixing Valgrind reported problem*/ - - /****************************/ - /* Prepare for shell coding */ - /****************************/ - /* 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++; - silk_memset( &pulses[ frame_length ], 0, SHELL_CODEC_FRAME_LENGTH * sizeof(opus_int8)); - } - - /* Take the absolute value of the pulses */ - ALLOC( abs_pulses, iter * SHELL_CODEC_FRAME_LENGTH, opus_int ); - silk_assert( !( SHELL_CODEC_FRAME_LENGTH & 3 ) ); - for( i = 0; i < iter * SHELL_CODEC_FRAME_LENGTH; i+=4 ) { - abs_pulses[i+0] = ( opus_int )silk_abs( pulses[ i + 0 ] ); - abs_pulses[i+1] = ( opus_int )silk_abs( pulses[ i + 1 ] ); - abs_pulses[i+2] = ( opus_int )silk_abs( pulses[ i + 2 ] ); - abs_pulses[i+3] = ( opus_int )silk_abs( pulses[ i + 3 ] ); - } - - /* Calc sum pulses per shell code frame */ - ALLOC( sum_pulses, iter, opus_int ); - ALLOC( nRshifts, iter, opus_int ); - abs_pulses_ptr = abs_pulses; - for( i = 0; i < iter; i++ ) { - nRshifts[ i ] = 0; - - while( 1 ) { - /* 1+1 -> 2 */ - scale_down = combine_and_check( pulses_comb, abs_pulses_ptr, silk_max_pulses_table[ 0 ], 8 ); - /* 2+2 -> 4 */ - scale_down += combine_and_check( pulses_comb, pulses_comb, silk_max_pulses_table[ 1 ], 4 ); - /* 4+4 -> 8 */ - scale_down += combine_and_check( pulses_comb, pulses_comb, silk_max_pulses_table[ 2 ], 2 ); - /* 8+8 -> 16 */ - scale_down += combine_and_check( &sum_pulses[ i ], pulses_comb, silk_max_pulses_table[ 3 ], 1 ); - - if( scale_down ) { - /* We need to downscale the quantization signal */ - nRshifts[ i ]++; - for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) { - abs_pulses_ptr[ k ] = silk_RSHIFT( abs_pulses_ptr[ k ], 1 ); - } - } else { - /* Jump out of while(1) loop and go to next shell coding frame */ - break; - } - } - abs_pulses_ptr += SHELL_CODEC_FRAME_LENGTH; - } - - /**************/ - /* Rate level */ - /**************/ - /* find rate level that leads to fewest bits for coding of pulses per block info */ - minSumBits_Q5 = silk_int32_MAX; - for( k = 0; k < N_RATE_LEVELS - 1; k++ ) { - nBits_ptr = silk_pulses_per_block_BITS_Q5[ k ]; - sumBits_Q5 = silk_rate_levels_BITS_Q5[ signalType >> 1 ][ k ]; - for( i = 0; i < iter; i++ ) { - if( nRshifts[ i ] > 0 ) { - sumBits_Q5 += nBits_ptr[ MAX_PULSES + 1 ]; - } else { - sumBits_Q5 += nBits_ptr[ sum_pulses[ i ] ]; - } - } - if( sumBits_Q5 < minSumBits_Q5 ) { - minSumBits_Q5 = sumBits_Q5; - RateLevelIndex = k; - } - } - ec_enc_icdf( psRangeEnc, RateLevelIndex, silk_rate_levels_iCDF[ signalType >> 1 ], 8 ); - - /***************************************************/ - /* Sum-Weighted-Pulses Encoding */ - /***************************************************/ - cdf_ptr = silk_pulses_per_block_iCDF[ RateLevelIndex ]; - for( i = 0; i < iter; i++ ) { - if( nRshifts[ i ] == 0 ) { - ec_enc_icdf( psRangeEnc, sum_pulses[ i ], cdf_ptr, 8 ); - } else { - ec_enc_icdf( psRangeEnc, MAX_PULSES + 1, cdf_ptr, 8 ); - for( k = 0; k < nRshifts[ i ] - 1; k++ ) { - ec_enc_icdf( psRangeEnc, MAX_PULSES + 1, silk_pulses_per_block_iCDF[ N_RATE_LEVELS - 1 ], 8 ); - } - ec_enc_icdf( psRangeEnc, sum_pulses[ i ], silk_pulses_per_block_iCDF[ N_RATE_LEVELS - 1 ], 8 ); - } - } - - /******************/ - /* Shell Encoding */ - /******************/ - for( i = 0; i < iter; i++ ) { - if( sum_pulses[ i ] > 0 ) { - silk_shell_encoder( psRangeEnc, &abs_pulses[ i * SHELL_CODEC_FRAME_LENGTH ] ); - } - } - - /****************/ - /* LSB Encoding */ - /****************/ - for( i = 0; i < iter; i++ ) { - if( nRshifts[ i ] > 0 ) { - pulses_ptr = &pulses[ i * SHELL_CODEC_FRAME_LENGTH ]; - nLS = nRshifts[ i ] - 1; - for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) { - abs_q = (opus_int8)silk_abs( pulses_ptr[ k ] ); - for( j = nLS; j > 0; j-- ) { - bit = silk_RSHIFT( abs_q, j ) & 1; - ec_enc_icdf( psRangeEnc, bit, silk_lsb_iCDF, 8 ); - } - bit = abs_q & 1; - ec_enc_icdf( psRangeEnc, bit, silk_lsb_iCDF, 8 ); - } - } - } - - /****************/ - /* Encode signs */ - /****************/ - silk_encode_signs( psRangeEnc, pulses, frame_length, signalType, quantOffsetType, sum_pulses ); - RESTORE_STACK; -} |