Vignesh Venkatasubramanian | 2bd8b54 | 2014-02-20 10:50:35 -0800 | [diff] [blame] | 1 | /*********************************************************************** |
| 2 | Copyright (c) 2006-2011, Skype Limited. All rights reserved. |
| 3 | Redistribution and use in source and binary forms, with or without |
| 4 | modification, are permitted provided that the following conditions |
| 5 | are met: |
| 6 | - Redistributions of source code must retain the above copyright notice, |
| 7 | this list of conditions and the following disclaimer. |
| 8 | - Redistributions in binary form must reproduce the above copyright |
| 9 | notice, this list of conditions and the following disclaimer in the |
| 10 | documentation and/or other materials provided with the distribution. |
| 11 | - Neither the name of Internet Society, IETF or IETF Trust, nor the |
| 12 | names of specific contributors, may be used to endorse or promote |
| 13 | products derived from this software without specific prior written |
| 14 | permission. |
| 15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 16 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 19 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 20 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 21 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 22 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 24 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 25 | POSSIBILITY OF SUCH DAMAGE. |
| 26 | ***********************************************************************/ |
| 27 | |
| 28 | #ifdef HAVE_CONFIG_H |
| 29 | #include "config.h" |
| 30 | #endif |
| 31 | |
| 32 | #include "main.h" |
| 33 | |
| 34 | /* Entropy code the mid/side quantization indices */ |
| 35 | void silk_stereo_encode_pred( |
| 36 | ec_enc *psRangeEnc, /* I/O Compressor data structure */ |
| 37 | opus_int8 ix[ 2 ][ 3 ] /* I Quantization indices */ |
| 38 | ) |
| 39 | { |
| 40 | opus_int n; |
| 41 | |
| 42 | /* Entropy coding */ |
| 43 | n = 5 * ix[ 0 ][ 2 ] + ix[ 1 ][ 2 ]; |
Felicia Lim | 0efcc2b | 2018-11-06 12:35:39 -0800 | [diff] [blame] | 44 | celt_assert( n < 25 ); |
Vignesh Venkatasubramanian | 2bd8b54 | 2014-02-20 10:50:35 -0800 | [diff] [blame] | 45 | ec_enc_icdf( psRangeEnc, n, silk_stereo_pred_joint_iCDF, 8 ); |
| 46 | for( n = 0; n < 2; n++ ) { |
Felicia Lim | 0efcc2b | 2018-11-06 12:35:39 -0800 | [diff] [blame] | 47 | celt_assert( ix[ n ][ 0 ] < 3 ); |
| 48 | celt_assert( ix[ n ][ 1 ] < STEREO_QUANT_SUB_STEPS ); |
Vignesh Venkatasubramanian | 2bd8b54 | 2014-02-20 10:50:35 -0800 | [diff] [blame] | 49 | ec_enc_icdf( psRangeEnc, ix[ n ][ 0 ], silk_uniform3_iCDF, 8 ); |
| 50 | ec_enc_icdf( psRangeEnc, ix[ n ][ 1 ], silk_uniform5_iCDF, 8 ); |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | /* Entropy code the mid-only flag */ |
| 55 | void silk_stereo_encode_mid_only( |
| 56 | ec_enc *psRangeEnc, /* I/O Compressor data structure */ |
| 57 | opus_int8 mid_only_flag |
| 58 | ) |
| 59 | { |
| 60 | /* Encode flag that only mid channel is coded */ |
| 61 | ec_enc_icdf( psRangeEnc, mid_only_flag, silk_stereo_only_code_mid_iCDF, 8 ); |
| 62 | } |