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bring the code up to the release tarball
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@17026 d0543943-73ff-0310-b7d9-9358b9ac24b2
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@@ -1,220 +1,195 @@
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/***********************************************************************
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Copyright (c) 2006-2010, Skype Limited. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, (subject to the limitations in the disclaimer below)
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are permitted provided that the following conditions are met:
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||||
- Redistributions of source code must retain the above copyright notice,
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||||
this list of conditions and the following disclaimer.
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||||
- Redistributions in binary form must reproduce the above copyright
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||||
notice, this list of conditions and the following disclaimer in the
|
||||
documentation and/or other materials provided with the distribution.
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||||
- Neither the name of Skype Limited, nor the names of specific
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||||
contributors, may be used to endorse or promote products derived from
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this software without specific prior written permission.
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NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
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BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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***********************************************************************/
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#include "SKP_Silk_main.h"
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/*********************************************/
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/* Encode quantization indices of excitation */
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/*********************************************/
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SKP_INLINE SKP_int combine_and_check( /* return ok */
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SKP_int *pulses_comb, /* O */
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const SKP_int *pulses_in, /* I */
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SKP_int max_pulses, /* I max value for sum of pulses */
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SKP_int len /* I number of output values */
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)
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{
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SKP_int k, sum;
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for( k = 0; k < len; k++ ) {
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sum = pulses_in[2*k] + pulses_in[2*k+1];
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if( sum > max_pulses ) {
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return 1;
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}
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pulses_comb[ k ] = sum;
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}
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return 0;
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}
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/* Encode quantization indices of excitation */
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void SKP_Silk_encode_pulses(
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SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */
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const SKP_int sigtype, /* I Sigtype */
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const SKP_int QuantOffsetType,/* I QuantOffsetType */
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const SKP_int q[], /* I quantization indices */
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const SKP_int frame_length /* I Frame length */
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)
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{
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SKP_int i, k, j, iter, bit, nLS, scale_down, RateLevelIndex = 0;
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SKP_int32 abs_q, minSumBits_Q6, sumBits_Q6;
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SKP_int abs_pulses[MAX_FRAME_LENGTH];
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SKP_int pulses_comb[ 8 ];
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SKP_int sum_pulses[MAX_NB_SHELL_BLOCKS], nRshifts[MAX_NB_SHELL_BLOCKS];
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SKP_int *abs_pulses_ptr;
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const SKP_int *pulses_ptr;
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const SKP_uint16 *cdf_ptr;
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const SKP_int16 *nBits_ptr;
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SKP_memset( pulses_comb, 0, 8 * sizeof(SKP_int)); // Fixing Valgrind reported problem
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/********************************/
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/* Prepare for shell coding */
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/********************************/
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/* Calculate number of shell blocks */
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iter = frame_length / SHELL_CODEC_FRAME_LENGTH;
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/* Take the absolute value of the pulses */
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for( i = 0; i < frame_length; i+=4 ) {
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abs_pulses[i+0] = (SKP_int)SKP_abs(q[i+0]);
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abs_pulses[i+1] = (SKP_int)SKP_abs(q[i+1]);
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abs_pulses[i+2] = (SKP_int)SKP_abs(q[i+2]);
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abs_pulses[i+3] = (SKP_int)SKP_abs(q[i+3]);
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}
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/* Calc sum pulses per shell code frame */
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abs_pulses_ptr = abs_pulses;
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for( i = 0; i < iter; i++ ) {
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nRshifts[ i ] = 0;
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while (1) {
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/* 1+1 -> 2 */
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scale_down = combine_and_check(pulses_comb, abs_pulses_ptr, SKP_Silk_max_pulses_table[ 0 ], 8);
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/* 2+2 -> 4 */
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scale_down += combine_and_check(pulses_comb, pulses_comb, SKP_Silk_max_pulses_table[ 1 ], 4);
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/* 4+4 -> 8 */
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scale_down += combine_and_check(pulses_comb, pulses_comb, SKP_Silk_max_pulses_table[ 2 ], 2);
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/* 8+8 -> 16 */
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sum_pulses[ i ] = pulses_comb[ 0 ] + pulses_comb[ 1 ];
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if( sum_pulses[ i ] > SKP_Silk_max_pulses_table[ 3 ] ) {
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scale_down++;
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}
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if( scale_down ) {
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/* We need to down scale the Quantization Signal */
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nRshifts[ i ]++;
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for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) {
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abs_pulses_ptr[ k ] = SKP_RSHIFT(abs_pulses_ptr[ k ], 1);
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}
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} else {
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/* Jump out of while(1) loop and go to next shell coding frame */
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break;
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}
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}
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abs_pulses_ptr += SHELL_CODEC_FRAME_LENGTH;
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}
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/********************/
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/* Rate level */
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/********************/
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/* find rate level that leads to fewest bits for coding of pulses per block info */
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minSumBits_Q6 = SKP_int32_MAX;
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for( k = 0; k < N_RATE_LEVELS - 1; k++ ) {
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nBits_ptr = SKP_Silk_pulses_per_block_BITS_Q6[ k ];
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sumBits_Q6 = SKP_Silk_rate_levels_BITS_Q6[sigtype][ k ];
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for( i = 0; i < iter; i++ ) {
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if(nRshifts[ i ] > 0) {
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sumBits_Q6 += nBits_ptr[MAX_PULSES+1];
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} else {
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sumBits_Q6 += nBits_ptr[sum_pulses[ i ]];
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}
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}
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if( sumBits_Q6 < minSumBits_Q6 ) {
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minSumBits_Q6 = sumBits_Q6;
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RateLevelIndex = k;
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}
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}
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SKP_Silk_range_encoder( psRC, RateLevelIndex, SKP_Silk_rate_levels_CDF[ sigtype ] );
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/***************************************************/
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/* Sum-Weighted-Pulses Encoding */
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/***************************************************/
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cdf_ptr = SKP_Silk_pulses_per_block_CDF[ RateLevelIndex ];
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for( i = 0; i < iter; i++ ){
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if(nRshifts[ i ] == 0) {
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SKP_Silk_range_encoder( psRC, sum_pulses[ i ], cdf_ptr );
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} else {
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SKP_Silk_range_encoder( psRC, MAX_PULSES+1, cdf_ptr );
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for( k = 0; k < nRshifts[ i ] - 1; k++ ) {
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SKP_Silk_range_encoder( psRC, MAX_PULSES+1, SKP_Silk_pulses_per_block_CDF[N_RATE_LEVELS-1] );
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}
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SKP_Silk_range_encoder( psRC, sum_pulses[ i ], SKP_Silk_pulses_per_block_CDF[N_RATE_LEVELS-1] );
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}
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}
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/***************************************************/
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/* Shell Encoding */
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/***************************************************/
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for( i = 0; i < iter; i++ ) {
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if( sum_pulses[ i ] > 0 ) {
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SKP_Silk_shell_encoder(psRC, &abs_pulses[i * SHELL_CODEC_FRAME_LENGTH]);
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}
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}
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/***************************************************/
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/* LSB Encoding */
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/***************************************************/
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for( i = 0; i < iter; i++ ) {
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if(nRshifts[ i ] > 0) {
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pulses_ptr = &q[i * SHELL_CODEC_FRAME_LENGTH];
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nLS = nRshifts[ i ] - 1;
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for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) {
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abs_q = SKP_abs(pulses_ptr[ k ]);
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for( j = nLS; j > 0; j-- ) {
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bit = SKP_RSHIFT(abs_q, j) & 1;
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SKP_Silk_range_encoder(psRC, bit, SKP_Silk_lsb_CDF);
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}
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bit = abs_q & 1;
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SKP_Silk_range_encoder(psRC, bit, SKP_Silk_lsb_CDF);
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}
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}
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}
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/****************************************/
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/* Encode signs */
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/****************************************/
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SKP_Silk_encode_signs( psRC, q, frame_length, sigtype, QuantOffsetType, RateLevelIndex);
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}
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/***********************************************************************
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Copyright (c) 2006-2010, Skype Limited. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, (subject to the limitations in the disclaimer below)
|
||||
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 Skype Limited, nor the names of specific
|
||||
contributors, may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
|
||||
BY THIS LICENSE. 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
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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***********************************************************************/
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#include "SKP_Silk_main.h"
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/*********************************************/
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/* Encode quantization indices of excitation */
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/*********************************************/
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SKP_INLINE SKP_int combine_and_check( /* return ok */
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SKP_int *pulses_comb, /* O */
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const SKP_int *pulses_in, /* I */
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SKP_int max_pulses, /* I max value for sum of pulses */
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SKP_int len /* I number of output values */
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)
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{
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SKP_int k, sum;
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for( k = 0; k < len; k++ ) {
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sum = pulses_in[ 2 * k ] + pulses_in[ 2 * k + 1 ];
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if( sum > max_pulses ) {
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return 1;
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}
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pulses_comb[ k ] = sum;
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}
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return 0;
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}
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/* Encode quantization indices of excitation */
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void SKP_Silk_encode_pulses(
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SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */
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const SKP_int sigtype, /* I Sigtype */
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const SKP_int QuantOffsetType,/* I QuantOffsetType */
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const SKP_int q[], /* I quantization indices */
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const SKP_int frame_length /* I Frame length */
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)
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{
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SKP_int i, k, j, iter, bit, nLS, scale_down, RateLevelIndex = 0;
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SKP_int32 abs_q, minSumBits_Q6, sumBits_Q6;
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SKP_int abs_pulses[ MAX_FRAME_LENGTH ];
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SKP_int sum_pulses[ MAX_NB_SHELL_BLOCKS ];
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SKP_int nRshifts[ MAX_NB_SHELL_BLOCKS ];
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SKP_int pulses_comb[ 8 ];
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SKP_int *abs_pulses_ptr;
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const SKP_int *pulses_ptr;
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const SKP_uint16 *cdf_ptr;
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const SKP_int16 *nBits_ptr;
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SKP_memset( pulses_comb, 0, 8 * sizeof( SKP_int ) ); // Fixing Valgrind reported problem
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/****************************/
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/* Prepare for shell coding */
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/****************************/
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/* Calculate number of shell blocks */
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iter = frame_length / SHELL_CODEC_FRAME_LENGTH;
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/* Take the absolute value of the pulses */
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for( i = 0; i < frame_length; i+=4 ) {
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abs_pulses[i+0] = ( SKP_int )SKP_abs( q[ i + 0 ] );
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abs_pulses[i+1] = ( SKP_int )SKP_abs( q[ i + 1 ] );
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abs_pulses[i+2] = ( SKP_int )SKP_abs( q[ i + 2 ] );
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abs_pulses[i+3] = ( SKP_int )SKP_abs( q[ i + 3 ] );
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}
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/* Calc sum pulses per shell code frame */
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abs_pulses_ptr = abs_pulses;
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for( i = 0; i < iter; i++ ) {
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nRshifts[ i ] = 0;
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while( 1 ) {
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/* 1+1 -> 2 */
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scale_down = combine_and_check( pulses_comb, abs_pulses_ptr, SKP_Silk_max_pulses_table[ 0 ], 8 );
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/* 2+2 -> 4 */
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scale_down += combine_and_check( pulses_comb, pulses_comb, SKP_Silk_max_pulses_table[ 1 ], 4 );
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/* 4+4 -> 8 */
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scale_down += combine_and_check( pulses_comb, pulses_comb, SKP_Silk_max_pulses_table[ 2 ], 2 );
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/* 8+8 -> 16 */
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sum_pulses[ i ] = pulses_comb[ 0 ] + pulses_comb[ 1 ];
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if( sum_pulses[ i ] > SKP_Silk_max_pulses_table[ 3 ] ) {
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scale_down++;
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}
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if( scale_down ) {
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/* We need to down scale the quantization signal */
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nRshifts[ i ]++;
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for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) {
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abs_pulses_ptr[ k ] = SKP_RSHIFT( abs_pulses_ptr[ k ], 1 );
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}
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} else {
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/* Jump out of while(1) loop and go to next shell coding frame */
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break;
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}
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}
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abs_pulses_ptr += SHELL_CODEC_FRAME_LENGTH;
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}
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/**************/
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/* Rate level */
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/**************/
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/* find rate level that leads to fewest bits for coding of pulses per block info */
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minSumBits_Q6 = SKP_int32_MAX;
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for( k = 0; k < N_RATE_LEVELS - 1; k++ ) {
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nBits_ptr = SKP_Silk_pulses_per_block_BITS_Q6[ k ];
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sumBits_Q6 = SKP_Silk_rate_levels_BITS_Q6[sigtype][ k ];
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for( i = 0; i < iter; i++ ) {
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if( nRshifts[ i ] > 0 ) {
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sumBits_Q6 += nBits_ptr[ MAX_PULSES + 1 ];
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} else {
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sumBits_Q6 += nBits_ptr[ sum_pulses[ i ] ];
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}
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}
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if( sumBits_Q6 < minSumBits_Q6 ) {
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minSumBits_Q6 = sumBits_Q6;
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RateLevelIndex = k;
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}
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}
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SKP_Silk_range_encoder( psRC, RateLevelIndex, SKP_Silk_rate_levels_CDF[ sigtype ] );
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/***************************************************/
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/* Sum-Weighted-Pulses Encoding */
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/***************************************************/
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cdf_ptr = SKP_Silk_pulses_per_block_CDF[ RateLevelIndex ];
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for( i = 0; i < iter; i++ ) {
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if( nRshifts[ i ] == 0 ) {
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SKP_Silk_range_encoder( psRC, sum_pulses[ i ], cdf_ptr );
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} else {
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SKP_Silk_range_encoder( psRC, MAX_PULSES + 1, cdf_ptr );
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for( k = 0; k < nRshifts[ i ] - 1; k++ ) {
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SKP_Silk_range_encoder( psRC, MAX_PULSES + 1, SKP_Silk_pulses_per_block_CDF[ N_RATE_LEVELS - 1 ] );
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}
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SKP_Silk_range_encoder( psRC, sum_pulses[ i ], SKP_Silk_pulses_per_block_CDF[ N_RATE_LEVELS - 1 ] );
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}
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}
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/******************/
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/* Shell Encoding */
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/******************/
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for( i = 0; i < iter; i++ ) {
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if( sum_pulses[ i ] > 0 ) {
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SKP_Silk_shell_encoder( psRC, &abs_pulses[ i * SHELL_CODEC_FRAME_LENGTH ] );
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}
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}
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/****************/
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/* LSB Encoding */
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/****************/
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for( i = 0; i < iter; i++ ) {
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if( nRshifts[ i ] > 0 ) {
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pulses_ptr = &q[ i * SHELL_CODEC_FRAME_LENGTH ];
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nLS = nRshifts[ i ] - 1;
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for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) {
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abs_q = SKP_abs( pulses_ptr[ k ] );
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for( j = nLS; j > 0; j-- ) {
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bit = SKP_RSHIFT( abs_q, j ) & 1;
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SKP_Silk_range_encoder( psRC, bit, SKP_Silk_lsb_CDF );
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||||
}
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bit = abs_q & 1;
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SKP_Silk_range_encoder( psRC, bit, SKP_Silk_lsb_CDF );
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||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/****************/
|
||||
/* Encode signs */
|
||||
/****************/
|
||||
SKP_Silk_encode_signs( psRC, q, frame_length, sigtype, QuantOffsetType, RateLevelIndex );
|
||||
}
|
||||
Reference in new issue
Block a user