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Diffstat (limited to 'drivers/opus/silk/encode_pulses.c')
-rw-r--r--drivers/opus/silk/encode_pulses.c203
1 files changed, 0 insertions, 203 deletions
diff --git a/drivers/opus/silk/encode_pulses.c b/drivers/opus/silk/encode_pulses.c
deleted file mode 100644
index 238eec1e42..0000000000
--- a/drivers/opus/silk/encode_pulses.c
+++ /dev/null
@@ -1,203 +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.
-***********************************************************************/
-#include "opus/opus_config.h"
-
-#include "opus/silk/main.h"
-#include "opus/celt/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[ SILK_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, SILK_MAX_PULSES + 1, cdf_ptr, 8 );
- for( k = 0; k < nRshifts[ i ] - 1; k++ ) {
- ec_enc_icdf( psRangeEnc, SILK_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;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 05:31:17 +0000