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16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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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 */
silk_stereo_encode_pred(ec_enc * psRangeEnc,opus_int8 ix[2][3])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 silk_assert( n < 25 );
45 ec_enc_icdf( psRangeEnc, n, silk_stereo_pred_joint_iCDF, 8 );
46 for( n = 0; n < 2; n++ ) {
47 silk_assert( ix[ n ][ 0 ] < 3 );
48 silk_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 */
silk_stereo_encode_mid_only(ec_enc * psRangeEnc,opus_int8 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 }
63