62 lines
2.8 KiB
C
62 lines
2.8 KiB
C
/***********************************************************************
|
|
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"
|
|
|
|
/* Entropy code the mid/side quantization indices */
|
|
void silk_stereo_encode_pred(
|
|
ec_enc *psRangeEnc, /* I/O Compressor data structure */
|
|
opus_int8 ix[ 2 ][ 3 ] /* I Quantization indices */
|
|
)
|
|
{
|
|
opus_int n;
|
|
|
|
/* Entropy coding */
|
|
n = 5 * ix[ 0 ][ 2 ] + ix[ 1 ][ 2 ];
|
|
celt_assert( n < 25 );
|
|
ec_enc_icdf( psRangeEnc, n, silk_stereo_pred_joint_iCDF, 8 );
|
|
for( n = 0; n < 2; n++ ) {
|
|
celt_assert( ix[ n ][ 0 ] < 3 );
|
|
celt_assert( ix[ n ][ 1 ] < STEREO_QUANT_SUB_STEPS );
|
|
ec_enc_icdf( psRangeEnc, ix[ n ][ 0 ], silk_uniform3_iCDF, 8 );
|
|
ec_enc_icdf( psRangeEnc, ix[ n ][ 1 ], silk_uniform5_iCDF, 8 );
|
|
}
|
|
}
|
|
|
|
/* Entropy code the mid-only flag */
|
|
void silk_stereo_encode_mid_only(
|
|
ec_enc *psRangeEnc, /* I/O Compressor data structure */
|
|
opus_int8 mid_only_flag
|
|
)
|
|
{
|
|
/* Encode flag that only mid channel is coded */
|
|
ec_enc_icdf( psRangeEnc, mid_only_flag, silk_stereo_only_code_mid_iCDF, 8 );
|
|
}
|