Line data    Source code

       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           0 : 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           0 :     n = 5 * ix[ 0 ][ 2 ] + ix[ 1 ][ 2 ];
      44           0 :     silk_assert( n < 25 );
      45           0 :     ec_enc_icdf( psRangeEnc, n, silk_stereo_pred_joint_iCDF, 8 );
      46           0 :     for( n = 0; n < 2; n++ ) {
      47           0 :         silk_assert( ix[ n ][ 0 ] < 3 );
      48           0 :         silk_assert( ix[ n ][ 1 ] < STEREO_QUANT_SUB_STEPS );
      49           0 :         ec_enc_icdf( psRangeEnc, ix[ n ][ 0 ], silk_uniform3_iCDF, 8 );
      50           0 :         ec_enc_icdf( psRangeEnc, ix[ n ][ 1 ], silk_uniform5_iCDF, 8 );
      51             :     }
      52           0 : }
      53             : 
      54             : /* Entropy code the mid-only flag */
      55           0 : 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           0 :     ec_enc_icdf( psRangeEnc, mid_only_flag, silk_stereo_only_code_mid_iCDF, 8 );
      62           0 : }