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
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      15             : THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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      25             : POSSIBILITY OF SUCH DAMAGE.
      26             : ***********************************************************************/
      27             : 
      28             : #ifdef HAVE_CONFIG_H
      29             : #include "config.h"
      30             : #endif
      31             : 
      32             : #include "main_FLP.h"
      33             : 
      34           0 : void silk_LTP_scale_ctrl_FLP(
      35             :     silk_encoder_state_FLP          *psEnc,                             /* I/O  Encoder state FLP                           */
      36             :     silk_encoder_control_FLP        *psEncCtrl,                         /* I/O  Encoder control FLP                         */
      37             :     opus_int                        condCoding                          /* I    The type of conditional coding to use       */
      38             : )
      39             : {
      40             :     opus_int   round_loss;
      41             : 
      42           0 :     if( condCoding == CODE_INDEPENDENTLY ) {
      43             :         /* Only scale if first frame in packet */
      44           0 :         round_loss = psEnc->sCmn.PacketLoss_perc + psEnc->sCmn.nFramesPerPacket;
      45           0 :         psEnc->sCmn.indices.LTP_scaleIndex = (opus_int8)silk_LIMIT( round_loss * psEncCtrl->LTPredCodGain * 0.1f, 0.0f, 2.0f );
      46             :     } else {
      47             :         /* Default is minimum scaling */
      48           0 :         psEnc->sCmn.indices.LTP_scaleIndex = 0;
      49             :     }
      50             : 
      51           0 :     psEncCtrl->LTP_scale = (silk_float)silk_LTPScales_table_Q14[ psEnc->sCmn.indices.LTP_scaleIndex ] / 16384.0f;
      52           0 : }