Index: webrtc/modules/audio_coding/codecs/opus/opus/src/silk/fixed/process_gains_FIX.c |
diff --git a/webrtc/modules/audio_coding/codecs/opus/opus/src/silk/fixed/process_gains_FIX.c b/webrtc/modules/audio_coding/codecs/opus/opus/src/silk/fixed/process_gains_FIX.c |
new file mode 100644 |
index 0000000000000000000000000000000000000000..05aba317889bd3a5766cb01bd18f9a4150a57d5c |
--- /dev/null |
+++ b/webrtc/modules/audio_coding/codecs/opus/opus/src/silk/fixed/process_gains_FIX.c |
@@ -0,0 +1,117 @@ |
+/*********************************************************************** |
+Copyright (c) 2006-2011, Skype Limited. All rights reserved. |
+Redistribution and use in source and binary forms, with or without |
+modification, 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 Internet Society, IETF or IETF Trust, nor the |
+names of specific contributors, may be used to endorse or promote |
+products derived from this software without specific prior written |
+permission. |
+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. |
+***********************************************************************/ |
+ |
+#ifdef HAVE_CONFIG_H |
+#include "config.h" |
+#endif |
+ |
+#include "main_FIX.h" |
+#include "tuning_parameters.h" |
+ |
+/* Processing of gains */ |
+void silk_process_gains_FIX( |
+ silk_encoder_state_FIX *psEnc, /* I/O Encoder state */ |
+ silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control */ |
+ opus_int condCoding /* I The type of conditional coding to use */ |
+) |
+{ |
+ silk_shape_state_FIX *psShapeSt = &psEnc->sShape; |
+ opus_int k; |
+ opus_int32 s_Q16, InvMaxSqrVal_Q16, gain, gain_squared, ResNrg, ResNrgPart, quant_offset_Q10; |
+ |
+ /* Gain reduction when LTP coding gain is high */ |
+ if( psEnc->sCmn.indices.signalType == TYPE_VOICED ) { |
+ /*s = -0.5f * silk_sigmoid( 0.25f * ( psEncCtrl->LTPredCodGain - 12.0f ) ); */ |
+ s_Q16 = -silk_sigm_Q15( silk_RSHIFT_ROUND( psEncCtrl->LTPredCodGain_Q7 - SILK_FIX_CONST( 12.0, 7 ), 4 ) ); |
+ for( k = 0; k < psEnc->sCmn.nb_subfr; k++ ) { |
+ psEncCtrl->Gains_Q16[ k ] = silk_SMLAWB( psEncCtrl->Gains_Q16[ k ], psEncCtrl->Gains_Q16[ k ], s_Q16 ); |
+ } |
+ } |
+ |
+ /* Limit the quantized signal */ |
+ /* InvMaxSqrVal = pow( 2.0f, 0.33f * ( 21.0f - SNR_dB ) ) / subfr_length; */ |
+ InvMaxSqrVal_Q16 = silk_DIV32_16( silk_log2lin( |
+ silk_SMULWB( SILK_FIX_CONST( 21 + 16 / 0.33, 7 ) - psEnc->sCmn.SNR_dB_Q7, SILK_FIX_CONST( 0.33, 16 ) ) ), psEnc->sCmn.subfr_length ); |
+ |
+ for( k = 0; k < psEnc->sCmn.nb_subfr; k++ ) { |
+ /* Soft limit on ratio residual energy and squared gains */ |
+ ResNrg = psEncCtrl->ResNrg[ k ]; |
+ ResNrgPart = silk_SMULWW( ResNrg, InvMaxSqrVal_Q16 ); |
+ if( psEncCtrl->ResNrgQ[ k ] > 0 ) { |
+ ResNrgPart = silk_RSHIFT_ROUND( ResNrgPart, psEncCtrl->ResNrgQ[ k ] ); |
+ } else { |
+ if( ResNrgPart >= silk_RSHIFT( silk_int32_MAX, -psEncCtrl->ResNrgQ[ k ] ) ) { |
+ ResNrgPart = silk_int32_MAX; |
+ } else { |
+ ResNrgPart = silk_LSHIFT( ResNrgPart, -psEncCtrl->ResNrgQ[ k ] ); |
+ } |
+ } |
+ gain = psEncCtrl->Gains_Q16[ k ]; |
+ gain_squared = silk_ADD_SAT32( ResNrgPart, silk_SMMUL( gain, gain ) ); |
+ if( gain_squared < silk_int16_MAX ) { |
+ /* recalculate with higher precision */ |
+ gain_squared = silk_SMLAWW( silk_LSHIFT( ResNrgPart, 16 ), gain, gain ); |
+ silk_assert( gain_squared > 0 ); |
+ gain = silk_SQRT_APPROX( gain_squared ); /* Q8 */ |
+ gain = silk_min( gain, silk_int32_MAX >> 8 ); |
+ psEncCtrl->Gains_Q16[ k ] = silk_LSHIFT_SAT32( gain, 8 ); /* Q16 */ |
+ } else { |
+ gain = silk_SQRT_APPROX( gain_squared ); /* Q0 */ |
+ gain = silk_min( gain, silk_int32_MAX >> 16 ); |
+ psEncCtrl->Gains_Q16[ k ] = silk_LSHIFT_SAT32( gain, 16 ); /* Q16 */ |
+ } |
+ } |
+ |
+ /* Save unquantized gains and gain Index */ |
+ silk_memcpy( psEncCtrl->GainsUnq_Q16, psEncCtrl->Gains_Q16, psEnc->sCmn.nb_subfr * sizeof( opus_int32 ) ); |
+ psEncCtrl->lastGainIndexPrev = psShapeSt->LastGainIndex; |
+ |
+ /* Quantize gains */ |
+ silk_gains_quant( psEnc->sCmn.indices.GainsIndices, psEncCtrl->Gains_Q16, |
+ &psShapeSt->LastGainIndex, condCoding == CODE_CONDITIONALLY, psEnc->sCmn.nb_subfr ); |
+ |
+ /* Set quantizer offset for voiced signals. Larger offset when LTP coding gain is low or tilt is high (ie low-pass) */ |
+ if( psEnc->sCmn.indices.signalType == TYPE_VOICED ) { |
+ if( psEncCtrl->LTPredCodGain_Q7 + silk_RSHIFT( psEnc->sCmn.input_tilt_Q15, 8 ) > SILK_FIX_CONST( 1.0, 7 ) ) { |
+ psEnc->sCmn.indices.quantOffsetType = 0; |
+ } else { |
+ psEnc->sCmn.indices.quantOffsetType = 1; |
+ } |
+ } |
+ |
+ /* Quantizer boundary adjustment */ |
+ quant_offset_Q10 = silk_Quantization_Offsets_Q10[ psEnc->sCmn.indices.signalType >> 1 ][ psEnc->sCmn.indices.quantOffsetType ]; |
+ psEncCtrl->Lambda_Q10 = SILK_FIX_CONST( LAMBDA_OFFSET, 10 ) |
+ + silk_SMULBB( SILK_FIX_CONST( LAMBDA_DELAYED_DECISIONS, 10 ), psEnc->sCmn.nStatesDelayedDecision ) |
+ + silk_SMULWB( SILK_FIX_CONST( LAMBDA_SPEECH_ACT, 18 ), psEnc->sCmn.speech_activity_Q8 ) |
+ + silk_SMULWB( SILK_FIX_CONST( LAMBDA_INPUT_QUALITY, 12 ), psEncCtrl->input_quality_Q14 ) |
+ + silk_SMULWB( SILK_FIX_CONST( LAMBDA_CODING_QUALITY, 12 ), psEncCtrl->coding_quality_Q14 ) |
+ + silk_SMULWB( SILK_FIX_CONST( LAMBDA_QUANT_OFFSET, 16 ), quant_offset_Q10 ); |
+ |
+ silk_assert( psEncCtrl->Lambda_Q10 > 0 ); |
+ silk_assert( psEncCtrl->Lambda_Q10 < SILK_FIX_CONST( 2, 10 ) ); |
+} |