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-rw-r--r--thirdparty/opus/silk/decode_pulses.c115
1 files changed, 0 insertions, 115 deletions
diff --git a/thirdparty/opus/silk/decode_pulses.c b/thirdparty/opus/silk/decode_pulses.c
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--- a/thirdparty/opus/silk/decode_pulses.c
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@@ -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_int16 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_int16 *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 ] == SILK_MAX_PULSES + 1 ) {
- nLshifts[ i ]++;
- /* When we've already got 10 LSBs, we shift the table to not allow (SILK_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( pulses[0] ) );
- }
- }
-
- /***************************************************/
- /* 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 );
-}