diff options
Diffstat (limited to 'src/opus-1.0.2/silk/stereo_decode_pred.c')
| -rw-r--r-- | src/opus-1.0.2/silk/stereo_decode_pred.c | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/src/opus-1.0.2/silk/stereo_decode_pred.c b/src/opus-1.0.2/silk/stereo_decode_pred.c deleted file mode 100644 index 026aa7a0..00000000 --- a/src/opus-1.0.2/silk/stereo_decode_pred.c +++ /dev/null @@ -1,73 +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 mid/side predictors */ -void silk_stereo_decode_pred( - ec_dec *psRangeDec, /* I/O Compressor data structure */ - opus_int32 pred_Q13[] /* O Predictors */ -) -{ - opus_int n, ix[ 2 ][ 3 ]; - opus_int32 low_Q13, step_Q13; - - /* Entropy decoding */ - n = ec_dec_icdf( psRangeDec, silk_stereo_pred_joint_iCDF, 8 ); - ix[ 0 ][ 2 ] = silk_DIV32_16( n, 5 ); - ix[ 1 ][ 2 ] = n - 5 * ix[ 0 ][ 2 ]; - for( n = 0; n < 2; n++ ) { - ix[ n ][ 0 ] = ec_dec_icdf( psRangeDec, silk_uniform3_iCDF, 8 ); - ix[ n ][ 1 ] = ec_dec_icdf( psRangeDec, silk_uniform5_iCDF, 8 ); - } - - /* Dequantize */ - for( n = 0; n < 2; n++ ) { - ix[ n ][ 0 ] += 3 * ix[ n ][ 2 ]; - low_Q13 = silk_stereo_pred_quant_Q13[ ix[ n ][ 0 ] ]; - step_Q13 = silk_SMULWB( silk_stereo_pred_quant_Q13[ ix[ n ][ 0 ] + 1 ] - low_Q13, - SILK_FIX_CONST( 0.5 / STEREO_QUANT_SUB_STEPS, 16 ) ); - pred_Q13[ n ] = silk_SMLABB( low_Q13, step_Q13, 2 * ix[ n ][ 1 ] + 1 ); - } - - /* Subtract second from first predictor (helps when actually applying these) */ - pred_Q13[ 0 ] -= pred_Q13[ 1 ]; -} - -/* Decode mid-only flag */ -void silk_stereo_decode_mid_only( - ec_dec *psRangeDec, /* I/O Compressor data structure */ - opus_int *decode_only_mid /* O Flag that only mid channel has been coded */ -) -{ - /* Decode flag that only mid channel is coded */ - *decode_only_mid = ec_dec_icdf( psRangeDec, silk_stereo_only_code_mid_iCDF, 8 ); -} |