diff options
Diffstat (limited to 'lib/rbcodec/codecs/libopus/silk/stereo_encode_pred.c')
-rw-r--r-- | lib/rbcodec/codecs/libopus/silk/stereo_encode_pred.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libopus/silk/stereo_encode_pred.c b/lib/rbcodec/codecs/libopus/silk/stereo_encode_pred.c new file mode 100644 index 0000000000..03becb6736 --- /dev/null +++ b/lib/rbcodec/codecs/libopus/silk/stereo_encode_pred.c | |||
@@ -0,0 +1,62 @@ | |||
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 | ||
23 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
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 ]; | ||
44 | celt_assert( n < 25 ); | ||
45 | ec_enc_icdf( psRangeEnc, n, silk_stereo_pred_joint_iCDF, 8 ); | ||
46 | for( n = 0; n < 2; n++ ) { | ||
47 | celt_assert( ix[ n ][ 0 ] < 3 ); | ||
48 | celt_assert( ix[ n ][ 1 ] < STEREO_QUANT_SUB_STEPS ); | ||
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 | } | ||