diff options
Diffstat (limited to 'src/opus-1.0.2/silk/NLSF_del_dec_quant.c')
| -rw-r--r-- | src/opus-1.0.2/silk/NLSF_del_dec_quant.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/src/opus-1.0.2/silk/NLSF_del_dec_quant.c b/src/opus-1.0.2/silk/NLSF_del_dec_quant.c deleted file mode 100644 index 78870de5..00000000 --- a/src/opus-1.0.2/silk/NLSF_del_dec_quant.c +++ /dev/null @@ -1,207 +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" - -/* Delayed-decision quantizer for NLSF residuals */ -opus_int32 silk_NLSF_del_dec_quant( /* O Returns RD value in Q25 */ - opus_int8 indices[], /* O Quantization indices [ order ] */ - const opus_int16 x_Q10[], /* I Input [ order ] */ - const opus_int16 w_Q5[], /* I Weights [ order ] */ - const opus_uint8 pred_coef_Q8[], /* I Backward predictor coefs [ order ] */ - const opus_int16 ec_ix[], /* I Indices to entropy coding tables [ order ] */ - const opus_uint8 ec_rates_Q5[], /* I Rates [] */ - const opus_int quant_step_size_Q16, /* I Quantization step size */ - const opus_int16 inv_quant_step_size_Q6, /* I Inverse quantization step size */ - const opus_int32 mu_Q20, /* I R/D tradeoff */ - const opus_int16 order /* I Number of input values */ -) -{ - opus_int i, j, nStates, ind_tmp, ind_min_max, ind_max_min, in_Q10, res_Q10; - opus_int pred_Q10, diff_Q10, out0_Q10, out1_Q10, rate0_Q5, rate1_Q5; - opus_int32 RD_tmp_Q25, min_Q25, min_max_Q25, max_min_Q25, pred_coef_Q16; - opus_int ind_sort[ NLSF_QUANT_DEL_DEC_STATES ]; - opus_int8 ind[ NLSF_QUANT_DEL_DEC_STATES ][ MAX_LPC_ORDER ]; - opus_int16 prev_out_Q10[ 2 * NLSF_QUANT_DEL_DEC_STATES ]; - opus_int32 RD_Q25[ 2 * NLSF_QUANT_DEL_DEC_STATES ]; - opus_int32 RD_min_Q25[ NLSF_QUANT_DEL_DEC_STATES ]; - opus_int32 RD_max_Q25[ NLSF_QUANT_DEL_DEC_STATES ]; - const opus_uint8 *rates_Q5; - - silk_assert( (NLSF_QUANT_DEL_DEC_STATES & (NLSF_QUANT_DEL_DEC_STATES-1)) == 0 ); /* must be power of two */ - - nStates = 1; - RD_Q25[ 0 ] = 0; - prev_out_Q10[ 0 ] = 0; - for( i = order - 1; ; i-- ) { - rates_Q5 = &ec_rates_Q5[ ec_ix[ i ] ]; - pred_coef_Q16 = silk_LSHIFT( (opus_int32)pred_coef_Q8[ i ], 8 ); - in_Q10 = x_Q10[ i ]; - for( j = 0; j < nStates; j++ ) { - pred_Q10 = silk_SMULWB( pred_coef_Q16, prev_out_Q10[ j ] ); - res_Q10 = silk_SUB16( in_Q10, pred_Q10 ); - ind_tmp = silk_SMULWB( (opus_int32)inv_quant_step_size_Q6, res_Q10 ); - ind_tmp = silk_LIMIT( ind_tmp, -NLSF_QUANT_MAX_AMPLITUDE_EXT, NLSF_QUANT_MAX_AMPLITUDE_EXT-1 ); - ind[ j ][ i ] = (opus_int8)ind_tmp; - - /* compute outputs for ind_tmp and ind_tmp + 1 */ - out0_Q10 = silk_LSHIFT( ind_tmp, 10 ); - out1_Q10 = silk_ADD16( out0_Q10, 1024 ); - if( ind_tmp > 0 ) { - out0_Q10 = silk_SUB16( out0_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) ); - out1_Q10 = silk_SUB16( out1_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) ); - } else if( ind_tmp == 0 ) { - out1_Q10 = silk_SUB16( out1_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) ); - } else if( ind_tmp == -1 ) { - out0_Q10 = silk_ADD16( out0_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) ); - } else { - out0_Q10 = silk_ADD16( out0_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) ); - out1_Q10 = silk_ADD16( out1_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) ); - } - out0_Q10 = silk_SMULWB( (opus_int32)out0_Q10, quant_step_size_Q16 ); - out1_Q10 = silk_SMULWB( (opus_int32)out1_Q10, quant_step_size_Q16 ); - out0_Q10 = silk_ADD16( out0_Q10, pred_Q10 ); - out1_Q10 = silk_ADD16( out1_Q10, pred_Q10 ); - prev_out_Q10[ j ] = out0_Q10; - prev_out_Q10[ j + nStates ] = out1_Q10; - - /* compute RD for ind_tmp and ind_tmp + 1 */ - if( ind_tmp + 1 >= NLSF_QUANT_MAX_AMPLITUDE ) { - if( ind_tmp + 1 == NLSF_QUANT_MAX_AMPLITUDE ) { - rate0_Q5 = rates_Q5[ ind_tmp + NLSF_QUANT_MAX_AMPLITUDE ]; - rate1_Q5 = 280; - } else { - rate0_Q5 = silk_SMLABB( 280 - 43 * NLSF_QUANT_MAX_AMPLITUDE, 43, ind_tmp ); - rate1_Q5 = silk_ADD16( rate0_Q5, 43 ); - } - } else if( ind_tmp <= -NLSF_QUANT_MAX_AMPLITUDE ) { - if( ind_tmp == -NLSF_QUANT_MAX_AMPLITUDE ) { - rate0_Q5 = 280; - rate1_Q5 = rates_Q5[ ind_tmp + 1 + NLSF_QUANT_MAX_AMPLITUDE ]; - } else { - rate0_Q5 = silk_SMLABB( 280 - 43 * NLSF_QUANT_MAX_AMPLITUDE, -43, ind_tmp ); - rate1_Q5 = silk_SUB16( rate0_Q5, 43 ); - } - } else { - rate0_Q5 = rates_Q5[ ind_tmp + NLSF_QUANT_MAX_AMPLITUDE ]; - rate1_Q5 = rates_Q5[ ind_tmp + 1 + NLSF_QUANT_MAX_AMPLITUDE ]; - } - RD_tmp_Q25 = RD_Q25[ j ]; - diff_Q10 = silk_SUB16( in_Q10, out0_Q10 ); - RD_Q25[ j ] = silk_SMLABB( silk_MLA( RD_tmp_Q25, silk_SMULBB( diff_Q10, diff_Q10 ), w_Q5[ i ] ), mu_Q20, rate0_Q5 ); - diff_Q10 = silk_SUB16( in_Q10, out1_Q10 ); - RD_Q25[ j + nStates ] = silk_SMLABB( silk_MLA( RD_tmp_Q25, silk_SMULBB( diff_Q10, diff_Q10 ), w_Q5[ i ] ), mu_Q20, rate1_Q5 ); - } - - if( nStates < NLSF_QUANT_DEL_DEC_STATES ) { - /* double number of states and copy */ - for( j = 0; j < nStates; j++ ) { - ind[ j + nStates ][ i ] = ind[ j ][ i ] + 1; - } - nStates = silk_LSHIFT( nStates, 1 ); - for( j = nStates; j < NLSF_QUANT_DEL_DEC_STATES; j++ ) { - ind[ j ][ i ] = ind[ j - nStates ][ i ]; - } - } else if( i > 0 ) { - /* sort lower and upper half of RD_Q25, pairwise */ - for( j = 0; j < NLSF_QUANT_DEL_DEC_STATES; j++ ) { - if( RD_Q25[ j ] > RD_Q25[ j + NLSF_QUANT_DEL_DEC_STATES ] ) { - RD_max_Q25[ j ] = RD_Q25[ j ]; - RD_min_Q25[ j ] = RD_Q25[ j + NLSF_QUANT_DEL_DEC_STATES ]; - RD_Q25[ j ] = RD_min_Q25[ j ]; - RD_Q25[ j + NLSF_QUANT_DEL_DEC_STATES ] = RD_max_Q25[ j ]; - /* swap prev_out values */ - out0_Q10 = prev_out_Q10[ j ]; - prev_out_Q10[ j ] = prev_out_Q10[ j + NLSF_QUANT_DEL_DEC_STATES ]; - prev_out_Q10[ j + NLSF_QUANT_DEL_DEC_STATES ] = out0_Q10; - ind_sort[ j ] = j + NLSF_QUANT_DEL_DEC_STATES; - } else { - RD_min_Q25[ j ] = RD_Q25[ j ]; - RD_max_Q25[ j ] = RD_Q25[ j + NLSF_QUANT_DEL_DEC_STATES ]; - ind_sort[ j ] = j; - } - } - /* compare the highest RD values of the winning half with the lowest one in the losing half, and copy if necessary */ - /* afterwards ind_sort[] will contain the indices of the NLSF_QUANT_DEL_DEC_STATES winning RD values */ - while( 1 ) { - min_max_Q25 = silk_int32_MAX; - max_min_Q25 = 0; - ind_min_max = 0; - ind_max_min = 0; - for( j = 0; j < NLSF_QUANT_DEL_DEC_STATES; j++ ) { - if( min_max_Q25 > RD_max_Q25[ j ] ) { - min_max_Q25 = RD_max_Q25[ j ]; - ind_min_max = j; - } - if( max_min_Q25 < RD_min_Q25[ j ] ) { - max_min_Q25 = RD_min_Q25[ j ]; - ind_max_min = j; - } - } - if( min_max_Q25 >= max_min_Q25 ) { - break; - } - /* copy ind_min_max to ind_max_min */ - ind_sort[ ind_max_min ] = ind_sort[ ind_min_max ] ^ NLSF_QUANT_DEL_DEC_STATES; - RD_Q25[ ind_max_min ] = RD_Q25[ ind_min_max + NLSF_QUANT_DEL_DEC_STATES ]; - prev_out_Q10[ ind_max_min ] = prev_out_Q10[ ind_min_max + NLSF_QUANT_DEL_DEC_STATES ]; - RD_min_Q25[ ind_max_min ] = 0; - RD_max_Q25[ ind_min_max ] = silk_int32_MAX; - silk_memcpy( ind[ ind_max_min ], ind[ ind_min_max ], MAX_LPC_ORDER * sizeof( opus_int8 ) ); - } - /* increment index if it comes from the upper half */ - for( j = 0; j < NLSF_QUANT_DEL_DEC_STATES; j++ ) { - ind[ j ][ i ] += silk_RSHIFT( ind_sort[ j ], NLSF_QUANT_DEL_DEC_STATES_LOG2 ); - } - } else { /* i == 0 */ - break; - } - } - - /* last sample: find winner, copy indices and return RD value */ - ind_tmp = 0; - min_Q25 = silk_int32_MAX; - for( j = 0; j < 2 * NLSF_QUANT_DEL_DEC_STATES; j++ ) { - if( min_Q25 > RD_Q25[ j ] ) { - min_Q25 = RD_Q25[ j ]; - ind_tmp = j; - } - } - for( j = 0; j < order; j++ ) { - indices[ j ] = ind[ ind_tmp & ( NLSF_QUANT_DEL_DEC_STATES - 1 ) ][ j ]; - silk_assert( indices[ j ] >= -NLSF_QUANT_MAX_AMPLITUDE_EXT ); - silk_assert( indices[ j ] <= NLSF_QUANT_MAX_AMPLITUDE_EXT ); - } - indices[ 0 ] += silk_RSHIFT( ind_tmp, NLSF_QUANT_DEL_DEC_STATES_LOG2 ); - silk_assert( indices[ 0 ] <= NLSF_QUANT_MAX_AMPLITUDE_EXT ); - silk_assert( min_Q25 >= 0 ); - return min_Q25; -} |