diff options
Diffstat (limited to 'thirdparty/opus/silk/quant_LTP_gains.c')
| -rw-r--r-- | thirdparty/opus/silk/quant_LTP_gains.c | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/thirdparty/opus/silk/quant_LTP_gains.c b/thirdparty/opus/silk/quant_LTP_gains.c deleted file mode 100644 index 513a8c4468..0000000000 --- a/thirdparty/opus/silk/quant_LTP_gains.c +++ /dev/null @@ -1,129 +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 "tuning_parameters.h" - -void silk_quant_LTP_gains( - opus_int16 B_Q14[ MAX_NB_SUBFR * LTP_ORDER ], /* I/O (un)quantized LTP gains */ - opus_int8 cbk_index[ MAX_NB_SUBFR ], /* O Codebook Index */ - opus_int8 *periodicity_index, /* O Periodicity Index */ - opus_int32 *sum_log_gain_Q7, /* I/O Cumulative max prediction gain */ - const opus_int32 W_Q18[ MAX_NB_SUBFR*LTP_ORDER*LTP_ORDER ], /* I Error Weights in Q18 */ - opus_int mu_Q9, /* I Mu value (R/D tradeoff) */ - opus_int lowComplexity, /* I Flag for low complexity */ - const opus_int nb_subfr, /* I number of subframes */ - int arch /* I Run-time architecture */ -) -{ - opus_int j, k, cbk_size; - opus_int8 temp_idx[ MAX_NB_SUBFR ]; - const opus_uint8 *cl_ptr_Q5; - const opus_int8 *cbk_ptr_Q7; - const opus_uint8 *cbk_gain_ptr_Q7; - const opus_int16 *b_Q14_ptr; - const opus_int32 *W_Q18_ptr; - opus_int32 rate_dist_Q14_subfr, rate_dist_Q14, min_rate_dist_Q14; - opus_int32 sum_log_gain_tmp_Q7, best_sum_log_gain_Q7, max_gain_Q7, gain_Q7; - - /***************************************************/ - /* iterate over different codebooks with different */ - /* rates/distortions, and choose best */ - /***************************************************/ - min_rate_dist_Q14 = silk_int32_MAX; - best_sum_log_gain_Q7 = 0; - for( k = 0; k < 3; k++ ) { - /* Safety margin for pitch gain control, to take into account factors - such as state rescaling/rewhitening. */ - opus_int32 gain_safety = SILK_FIX_CONST( 0.4, 7 ); - - cl_ptr_Q5 = silk_LTP_gain_BITS_Q5_ptrs[ k ]; - cbk_ptr_Q7 = silk_LTP_vq_ptrs_Q7[ k ]; - cbk_gain_ptr_Q7 = silk_LTP_vq_gain_ptrs_Q7[ k ]; - cbk_size = silk_LTP_vq_sizes[ k ]; - - /* Set up pointer to first subframe */ - W_Q18_ptr = W_Q18; - b_Q14_ptr = B_Q14; - - rate_dist_Q14 = 0; - sum_log_gain_tmp_Q7 = *sum_log_gain_Q7; - for( j = 0; j < nb_subfr; j++ ) { - max_gain_Q7 = silk_log2lin( ( SILK_FIX_CONST( MAX_SUM_LOG_GAIN_DB / 6.0, 7 ) - sum_log_gain_tmp_Q7 ) - + SILK_FIX_CONST( 7, 7 ) ) - gain_safety; - - silk_VQ_WMat_EC( - &temp_idx[ j ], /* O index of best codebook vector */ - &rate_dist_Q14_subfr, /* O best weighted quantization error + mu * rate */ - &gain_Q7, /* O sum of absolute LTP coefficients */ - b_Q14_ptr, /* I input vector to be quantized */ - W_Q18_ptr, /* I weighting matrix */ - cbk_ptr_Q7, /* I codebook */ - cbk_gain_ptr_Q7, /* I codebook effective gains */ - cl_ptr_Q5, /* I code length for each codebook vector */ - mu_Q9, /* I tradeoff between weighted error and rate */ - max_gain_Q7, /* I maximum sum of absolute LTP coefficients */ - cbk_size, /* I number of vectors in codebook */ - arch /* I Run-time architecture */ - ); - - rate_dist_Q14 = silk_ADD_POS_SAT32( rate_dist_Q14, rate_dist_Q14_subfr ); - sum_log_gain_tmp_Q7 = silk_max(0, sum_log_gain_tmp_Q7 - + silk_lin2log( gain_safety + gain_Q7 ) - SILK_FIX_CONST( 7, 7 )); - - b_Q14_ptr += LTP_ORDER; - W_Q18_ptr += LTP_ORDER * LTP_ORDER; - } - - /* Avoid never finding a codebook */ - rate_dist_Q14 = silk_min( silk_int32_MAX - 1, rate_dist_Q14 ); - - if( rate_dist_Q14 < min_rate_dist_Q14 ) { - min_rate_dist_Q14 = rate_dist_Q14; - *periodicity_index = (opus_int8)k; - silk_memcpy( cbk_index, temp_idx, nb_subfr * sizeof( opus_int8 ) ); - best_sum_log_gain_Q7 = sum_log_gain_tmp_Q7; - } - - /* Break early in low-complexity mode if rate distortion is below threshold */ - if( lowComplexity && ( rate_dist_Q14 < silk_LTP_gain_middle_avg_RD_Q14 ) ) { - break; - } - } - - cbk_ptr_Q7 = silk_LTP_vq_ptrs_Q7[ *periodicity_index ]; - for( j = 0; j < nb_subfr; j++ ) { - for( k = 0; k < LTP_ORDER; k++ ) { - B_Q14[ j * LTP_ORDER + k ] = silk_LSHIFT( cbk_ptr_Q7[ cbk_index[ j ] * LTP_ORDER + k ], 7 ); - } - } - *sum_log_gain_Q7 = best_sum_log_gain_Q7; -} |