Moved all SILK source code to the silk/ directory

1 files changed, 0 insertions, 149 deletions

diff --git a/src_common/SKP_Silk_CNG.c b/src_common/SKP_Silk_CNG.c
deleted file mode 100644
index 41128ef2..00000000
--- a/src_common/SKP_Silk_CNG.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/***********************************************************************

-Copyright (c) 2006-2011, Skype Limited. All rights reserved. 

-Redistribution and use in source and binary forms, with or without 

-modification, (subject to the limitations in the disclaimer below) 

-are permitted provided that the following conditions are met:

-- Redistributions of source code must retain the above copyright notice,

-this list of conditions and the following disclaimer.

-- Redistributions in binary form must reproduce the above copyright 

-notice, this list of conditions and the following disclaimer in the 

-documentation and/or other materials provided with the distribution.

-- Neither the name of Skype Limited, nor the names of specific 

-contributors, may be used to endorse or promote products derived from 

-this software without specific prior written permission.

-NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED 

-BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 

-CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,

-BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 

-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 

-COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 

-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

-NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 

-USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 

-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 

-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 

-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

-***********************************************************************/

-

-#include "SKP_Silk_main.h"

-

-/* Generates excitation for CNG LPC synthesis */

-SKP_INLINE void SKP_Silk_CNG_exc(

-    SKP_int16                       residual[],         /* O    CNG residual signal Q0                      */

-    SKP_int32                       exc_buf_Q10[],      /* I    Random samples buffer Q10                   */

-    SKP_int32                       Gain_Q16,           /* I    Gain to apply                               */

-    SKP_int                         length,             /* I    Length                                      */

-    SKP_int32                       *rand_seed          /* I/O  Seed to random index generator              */

-)

-{

-    SKP_int32 seed;

-    SKP_int   i, idx, exc_mask;

-

-    exc_mask = CNG_BUF_MASK_MAX;

-    while( exc_mask > length ) {

-        exc_mask = SKP_RSHIFT( exc_mask, 1 );

-    }

-

-    seed = *rand_seed;

-    for( i = 0; i < length; i++ ) {

-        seed = SKP_RAND( seed );

-        idx = ( SKP_int )( SKP_RSHIFT( seed, 24 ) & exc_mask );

-        SKP_assert( idx >= 0 );

-        SKP_assert( idx <= CNG_BUF_MASK_MAX );

-        residual[ i ] = ( SKP_int16 )SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SMULWW( exc_buf_Q10[ idx ], Gain_Q16 ), 10 ) );

-    }

-    *rand_seed = seed;

-}

-

-void SKP_Silk_CNG_Reset(

-    SKP_Silk_decoder_state      *psDec              /* I/O  Decoder state                               */

-)

-{

-    SKP_int i, NLSF_step_Q15, NLSF_acc_Q15;

-

-    NLSF_step_Q15 = SKP_DIV32_16( SKP_int16_MAX, psDec->LPC_order + 1 );

-    NLSF_acc_Q15 = 0;

-    for( i = 0; i < psDec->LPC_order; i++ ) {

-        NLSF_acc_Q15 += NLSF_step_Q15;

-        psDec->sCNG.CNG_smth_NLSF_Q15[ i ] = NLSF_acc_Q15;

-    }

-    psDec->sCNG.CNG_smth_Gain_Q16 = 0;

-    psDec->sCNG.rand_seed = 3176576;

-}

-

-/* Updates CNG estimate, and applies the CNG when packet was lost   */

-void SKP_Silk_CNG(

-    SKP_Silk_decoder_state      *psDec,             /* I/O  Decoder state                               */

-    SKP_Silk_decoder_control    *psDecCtrl,         /* I/O  Decoder control                             */

-    SKP_int16                   signal[],           /* I/O  Signal                                      */

-    SKP_int                     length              /* I    Length of residual                          */

-)

-{

-    SKP_int   i, subfr;

-    SKP_int32 tmp_32, Gain_Q26, max_Gain_Q16;

-    SKP_int16 LPC_buf[ MAX_LPC_ORDER ];

-    SKP_int16 CNG_sig[ MAX_FRAME_LENGTH ];

-    SKP_Silk_CNG_struct *psCNG;

-    psCNG = &psDec->sCNG;

-

-    if( psDec->fs_kHz != psCNG->fs_kHz ) {

-        /* Reset state */

-        SKP_Silk_CNG_Reset( psDec );

-

-        psCNG->fs_kHz = psDec->fs_kHz;

-    }

-    if( psDec->lossCnt == 0 && psDec->prevSignalType == TYPE_NO_VOICE_ACTIVITY ) {

-        /* Update CNG parameters */

-

-        /* Smoothing of LSF's  */

-        for( i = 0; i < psDec->LPC_order; i++ ) {

-            psCNG->CNG_smth_NLSF_Q15[ i ] += SKP_SMULWB( psDec->prevNLSF_Q15[ i ] - psCNG->CNG_smth_NLSF_Q15[ i ], CNG_NLSF_SMTH_Q16 );

-        }

-        /* Find the subframe with the highest gain */

-        max_Gain_Q16 = 0;

-        subfr        = 0;

-        for( i = 0; i < psDec->nb_subfr; i++ ) {

-            if( psDecCtrl->Gains_Q16[ i ] > max_Gain_Q16 ) {

-                max_Gain_Q16 = psDecCtrl->Gains_Q16[ i ];

-                subfr        = i;

-            }

-        }

-        /* Update CNG excitation buffer with excitation from this subframe */

-        SKP_memmove( &psCNG->CNG_exc_buf_Q10[ psDec->subfr_length ], psCNG->CNG_exc_buf_Q10, ( psDec->nb_subfr - 1 ) * psDec->subfr_length * sizeof( SKP_int32 ) );

-        SKP_memcpy(   psCNG->CNG_exc_buf_Q10, &psDec->exc_Q10[ subfr * psDec->subfr_length ], psDec->subfr_length * sizeof( SKP_int32 ) );

-

-        /* Smooth gains */

-        for( i = 0; i < psDec->nb_subfr; i++ ) {

-            psCNG->CNG_smth_Gain_Q16 += SKP_SMULWB( psDecCtrl->Gains_Q16[ i ] - psCNG->CNG_smth_Gain_Q16, CNG_GAIN_SMTH_Q16 );

-        }

-    }

-

-    /* Add CNG when packet is lost and / or when low speech activity */

-    if( psDec->lossCnt ) {

-

-        /* Generate CNG excitation */

-        SKP_Silk_CNG_exc( CNG_sig, psCNG->CNG_exc_buf_Q10, 

-                psCNG->CNG_smth_Gain_Q16, length, &psCNG->rand_seed );

-

-        /* Convert CNG NLSF to filter representation */

-        SKP_Silk_NLSF2A_stable( LPC_buf, psCNG->CNG_smth_NLSF_Q15, psDec->LPC_order );

-

-        Gain_Q26 = ( SKP_int32 )1 << 26; /* 1.0 */

-        

-        /* Generate CNG signal, by synthesis filtering */

-        if( psDec->LPC_order == 16 ) {

-            SKP_Silk_LPC_synthesis_order16( CNG_sig, LPC_buf, 

-                Gain_Q26, psCNG->CNG_synth_state, CNG_sig, length );

-        } else {

-            SKP_Silk_LPC_synthesis_filter( CNG_sig, LPC_buf, 

-                Gain_Q26, psCNG->CNG_synth_state, CNG_sig, length, psDec->LPC_order );

-        }

-        /* Mix with signal */

-        for( i = 0; i < length; i++ ) {

-            tmp_32 = signal[ i ] + CNG_sig[ i ];

-            signal[ i ] = SKP_SAT16( tmp_32 );

-        }

-    } else {

-        SKP_memset( psCNG->CNG_synth_state, 0, psDec->LPC_order *  sizeof( SKP_int32 ) );

-    }

-}