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authorJean-Marc Valin <jmvalin@jmvalin.ca>2011-09-16 12:16:53 +0400
committerJean-Marc Valin <jmvalin@jmvalin.ca>2011-09-16 12:16:53 +0400
commit1c2f5633d101c08b5ef8095a8682d3d52cbd952d (patch)
tree66f80e67f075db5fa5233759a89f475d8bedade2 /silk/fixed/encode_frame_FIX.c
parentfb3a437c9dabb4aafe4a3927158161590ed745ab (diff)
Removed all the silk_ prefixes in source file names (not symbols)
Diffstat (limited to 'silk/fixed/encode_frame_FIX.c')
-rw-r--r--silk/fixed/encode_frame_FIX.c305
1 files changed, 305 insertions, 0 deletions
diff --git a/silk/fixed/encode_frame_FIX.c b/silk/fixed/encode_frame_FIX.c
new file mode 100644
index 00000000..55cf5395
--- /dev/null
+++ b/silk/fixed/encode_frame_FIX.c
@@ -0,0 +1,305 @@
+/***********************************************************************
+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.
+***********************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "main_FIX.h"
+#include "tuning_parameters.h"
+
+/****************/
+/* Encode frame */
+/****************/
+opus_int silk_encode_frame_FIX(
+ silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */
+ opus_int32 *pnBytesOut, /* O Number of payload bytes */
+ ec_enc *psRangeEnc /* I/O compressor data structure */
+)
+{
+ silk_encoder_control_FIX sEncCtrl;
+ opus_int ret = 0;
+ opus_int16 *x_frame, *res_pitch_frame;
+ opus_int16 xfw[ MAX_FRAME_LENGTH ];
+ opus_int16 res_pitch[ 2 * MAX_FRAME_LENGTH + LA_PITCH_MAX ];
+
+TIC(ENCODE_FRAME)
+
+ psEnc->sCmn.indices.Seed = psEnc->sCmn.frameCounter++ & 3;
+
+ /**************************************************************/
+ /* Setup Input Pointers, and insert frame in input buffer */
+ /*************************************************************/
+ /* pointers aligned with start of frame to encode */
+ x_frame = psEnc->x_buf + psEnc->sCmn.ltp_mem_length; /* start of frame to encode */
+ res_pitch_frame = res_pitch + psEnc->sCmn.ltp_mem_length; /* start of pitch LPC residual frame */
+
+ /****************************/
+ /* Voice Activity Detection */
+ /****************************/
+TIC(VAD)
+ ret = silk_VAD_GetSA_Q8( &psEnc->sCmn, psEnc->sCmn.inputBuf + 1 );
+TOC(VAD)
+
+ /**************************************************/
+ /* Convert speech activity into VAD and DTX flags */
+ /**************************************************/
+ if( psEnc->sCmn.nFramesEncoded == 0 ) {
+ psEnc->sCmn.inDTX = psEnc->sCmn.useDTX;
+ }
+ if( psEnc->sCmn.speech_activity_Q8 < SILK_FIX_CONST( SPEECH_ACTIVITY_DTX_THRES, 8 ) ) {
+ psEnc->sCmn.indices.signalType = TYPE_NO_VOICE_ACTIVITY;
+ psEnc->sCmn.noSpeechCounter++;
+ if( psEnc->sCmn.noSpeechCounter < NB_SPEECH_FRAMES_BEFORE_DTX ) {
+ psEnc->sCmn.inDTX = 0;
+ } else if( psEnc->sCmn.noSpeechCounter > MAX_CONSECUTIVE_DTX + NB_SPEECH_FRAMES_BEFORE_DTX ) {
+ psEnc->sCmn.noSpeechCounter = NB_SPEECH_FRAMES_BEFORE_DTX;
+ psEnc->sCmn.inDTX = 0;
+ }
+ psEnc->sCmn.VAD_flags[ psEnc->sCmn.nFramesEncoded ] = 0;
+ } else {
+ psEnc->sCmn.noSpeechCounter = 0;
+ psEnc->sCmn.inDTX = 0;
+ psEnc->sCmn.indices.signalType = TYPE_UNVOICED;
+ psEnc->sCmn.VAD_flags[ psEnc->sCmn.nFramesEncoded ] = 1;
+ }
+
+ /***************************************/
+ /* Ensure smooth bandwidth transitions */
+ /***************************************/
+ silk_LP_variable_cutoff( &psEnc->sCmn.sLP, psEnc->sCmn.inputBuf + 1, psEnc->sCmn.frame_length );
+
+ /*******************************************/
+ /* Copy new frame to front of input buffer */
+ /*******************************************/
+ silk_memcpy( x_frame + LA_SHAPE_MS * psEnc->sCmn.fs_kHz, psEnc->sCmn.inputBuf + 1, psEnc->sCmn.frame_length * sizeof( opus_int16 ) );
+
+ /*****************************************/
+ /* Find pitch lags, initial LPC analysis */
+ /*****************************************/
+TIC(FIND_PITCH)
+ silk_find_pitch_lags_FIX( psEnc, &sEncCtrl, res_pitch, x_frame );
+TOC(FIND_PITCH)
+
+ /************************/
+ /* Noise shape analysis */
+ /************************/
+TIC(NOISE_SHAPE_ANALYSIS)
+ silk_noise_shape_analysis_FIX( psEnc, &sEncCtrl, res_pitch_frame, x_frame );
+TOC(NOISE_SHAPE_ANALYSIS)
+
+ /***************************************************/
+ /* Find linear prediction coefficients (LPC + LTP) */
+ /***************************************************/
+TIC(FIND_PRED_COEF)
+ silk_find_pred_coefs_FIX( psEnc, &sEncCtrl, res_pitch, x_frame );
+TOC(FIND_PRED_COEF)
+
+ /****************************************/
+ /* Process gains */
+ /****************************************/
+TIC(PROCESS_GAINS)
+ silk_process_gains_FIX( psEnc, &sEncCtrl );
+TOC(PROCESS_GAINS)
+
+ /*****************************************/
+ /* Prefiltering for noise shaper */
+ /*****************************************/
+TIC(PREFILTER)
+ silk_prefilter_FIX( psEnc, &sEncCtrl, xfw, x_frame );
+TOC(PREFILTER)
+
+ /****************************************/
+ /* Low Bitrate Redundant Encoding */
+ /****************************************/
+TIC(LBRR)
+ silk_LBRR_encode_FIX( psEnc, &sEncCtrl, xfw );
+TOC(LBRR)
+
+ /*****************************************/
+ /* Noise shaping quantization */
+ /*****************************************/
+TIC(NSQ)
+ if( psEnc->sCmn.nStatesDelayedDecision > 1 || psEnc->sCmn.warping_Q16 > 0 ) {
+ silk_NSQ_del_dec( &psEnc->sCmn, &psEnc->sCmn.sNSQ, &psEnc->sCmn.indices, xfw, psEnc->sCmn.pulses,
+ sEncCtrl.PredCoef_Q12[ 0 ], sEncCtrl.LTPCoef_Q14, sEncCtrl.AR2_Q13, sEncCtrl.HarmShapeGain_Q14,
+ sEncCtrl.Tilt_Q14, sEncCtrl.LF_shp_Q14, sEncCtrl.Gains_Q16, sEncCtrl.pitchL, sEncCtrl.Lambda_Q10, sEncCtrl.LTP_scale_Q14 );
+ } else {
+ silk_NSQ( &psEnc->sCmn, &psEnc->sCmn.sNSQ, &psEnc->sCmn.indices, xfw, psEnc->sCmn.pulses,
+ sEncCtrl.PredCoef_Q12[ 0 ], sEncCtrl.LTPCoef_Q14, sEncCtrl.AR2_Q13, sEncCtrl.HarmShapeGain_Q14,
+ sEncCtrl.Tilt_Q14, sEncCtrl.LF_shp_Q14, sEncCtrl.Gains_Q16, sEncCtrl.pitchL, sEncCtrl.Lambda_Q10, sEncCtrl.LTP_scale_Q14 );
+ }
+TOC(NSQ)
+
+ /* Update input buffer */
+ silk_memmove( psEnc->x_buf, &psEnc->x_buf[ psEnc->sCmn.frame_length ],
+ ( psEnc->sCmn.ltp_mem_length + LA_SHAPE_MS * psEnc->sCmn.fs_kHz ) * sizeof( opus_int16 ) );
+
+ /* Parameters needed for next frame */
+ psEnc->sCmn.prevLag = sEncCtrl.pitchL[ psEnc->sCmn.nb_subfr - 1 ];
+ psEnc->sCmn.prevSignalType = psEnc->sCmn.indices.signalType;
+
+ /* Exit without entropy coding */
+ if( psEnc->sCmn.prefillFlag ) {
+ /* No payload */
+ *pnBytesOut = 0;
+ return ret;
+ }
+
+ /****************************************/
+ /* Encode Parameters */
+ /****************************************/
+TIC(ENCODE_PARAMS)
+ silk_encode_indices( &psEnc->sCmn, psRangeEnc, psEnc->sCmn.nFramesEncoded, 0 );
+TOC(ENCODE_PARAMS)
+
+ /****************************************/
+ /* Encode Excitation Signal */
+ /****************************************/
+TIC(ENCODE_PULSES)
+ silk_encode_pulses( psRangeEnc, psEnc->sCmn.indices.signalType, psEnc->sCmn.indices.quantOffsetType,
+ psEnc->sCmn.pulses, psEnc->sCmn.frame_length );
+TOC(ENCODE_PULSES)
+
+ /****************************************/
+ /* Finalize payload */
+ /****************************************/
+ psEnc->sCmn.first_frame_after_reset = 0;
+ if( ++psEnc->sCmn.nFramesEncoded >= psEnc->sCmn.nFramesPerPacket ) {
+ /* Payload size */
+ *pnBytesOut = silk_RSHIFT( ec_tell( psRangeEnc ) + 7, 3 );
+
+ /* Reset the number of frames in payload buffer */
+ psEnc->sCmn.nFramesEncoded = 0;
+ } else {
+ /* No payload this time */
+ *pnBytesOut = 0;
+ }
+TOC(ENCODE_FRAME)
+
+#ifdef SAVE_ALL_INTERNAL_DATA
+ {
+ silk_float tmp[ MAX_NB_SUBFR * LTP_ORDER ];
+ int i;
+ DEBUG_STORE_DATA( xf.dat, x_frame + LA_SHAPE_MS * psEnc->sCmn.fs_kHz, psEnc->sCmn.frame_length * sizeof( opus_int16 ) );
+ DEBUG_STORE_DATA( xfw.dat, xfw, psEnc->sCmn.frame_length * sizeof( opus_int16 ) );
+ DEBUG_STORE_DATA( pitchL.dat, sEncCtrl.pitchL, psEnc->sCmn.nb_subfr * sizeof( opus_int ) );
+ for( i = 0; i < psEnc->sCmn.nb_subfr * LTP_ORDER; i++ ) {
+ tmp[ i ] = (silk_float)sEncCtrl.LTPCoef_Q14[ i ] / 16384.0f;
+ }
+ DEBUG_STORE_DATA( pitchG_quantized.dat, tmp, psEnc->sCmn.nb_subfr * LTP_ORDER * sizeof( silk_float ) );
+ for( i = 0; i <psEnc->sCmn.predictLPCOrder; i++ ) {
+ tmp[ i ] = (silk_float)sEncCtrl.PredCoef_Q12[ 1 ][ i ] / 4096.0f;
+ }
+ DEBUG_STORE_DATA( PredCoef.dat, tmp, psEnc->sCmn.predictLPCOrder * sizeof( silk_float ) );
+
+ tmp[ 0 ] = (silk_float)sEncCtrl.LTPredCodGain_Q7 / 128.0f;
+ DEBUG_STORE_DATA( LTPredCodGain.dat, tmp, sizeof( silk_float ) );
+ tmp[ 0 ] = (silk_float)psEnc->LTPCorr_Q15 / 32768.0f;
+ DEBUG_STORE_DATA( LTPcorr.dat, tmp, sizeof( silk_float ) );
+ tmp[ 0 ] = (silk_float)psEnc->sCmn.input_tilt_Q15 / 32768.0f;
+ DEBUG_STORE_DATA( tilt.dat, tmp, sizeof( silk_float ) );
+ for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
+ tmp[ i ] = (silk_float)sEncCtrl.Gains_Q16[ i ] / 65536.0f;
+ }
+ DEBUG_STORE_DATA( gains.dat, tmp, psEnc->sCmn.nb_subfr * sizeof( silk_float ) );
+ DEBUG_STORE_DATA( gains_indices.dat, &psEnc->sCmn.indices.GainsIndices, psEnc->sCmn.nb_subfr * sizeof( opus_int ) );
+ tmp[ 0 ] = (silk_float)sEncCtrl.current_SNR_dB_Q7 / 128.0f;
+ DEBUG_STORE_DATA( current_SNR_db.dat, tmp, sizeof( silk_float ) );
+ DEBUG_STORE_DATA( quantOffsetType.dat, &psEnc->sCmn.indices.quantOffsetType, sizeof( opus_int ) );
+ tmp[ 0 ] = (silk_float)psEnc->sCmn.speech_activity_Q8 / 256.0f;
+ DEBUG_STORE_DATA( speech_activity.dat, tmp, sizeof( silk_float ) );
+ for( i = 0; i < VAD_N_BANDS; i++ ) {
+ tmp[ i ] = (silk_float)psEnc->sCmn.input_quality_bands_Q15[ i ] / 32768.0f;
+ }
+ DEBUG_STORE_DATA( input_quality_bands.dat, tmp, VAD_N_BANDS * sizeof( silk_float ) );
+ DEBUG_STORE_DATA( signalType.dat, &psEnc->sCmn.indices.signalType, sizeof( opus_int8) );
+ DEBUG_STORE_DATA( lag_index.dat, &psEnc->sCmn.indices.lagIndex, sizeof( opus_int16 ) );
+ DEBUG_STORE_DATA( contour_index.dat, &psEnc->sCmn.indices.contourIndex, sizeof( opus_int8 ) );
+ DEBUG_STORE_DATA( per_index.dat, &psEnc->sCmn.indices.PERIndex, sizeof( opus_int8) );
+ }
+#endif
+ return ret;
+}
+
+/* Low-Bitrate Redundancy (LBRR) encoding. Reuse all parameters but encode excitation at lower bitrate */
+void silk_LBRR_encode_FIX(
+ silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */
+ silk_encoder_control_FIX *psEncCtrl, /* I/O Pointer to Silk FIX encoder control struct */
+ const opus_int16 xfw[] /* I Input signal */
+)
+{
+ opus_int32 TempGains_Q16[ MAX_NB_SUBFR ];
+ SideInfoIndices *psIndices_LBRR = &psEnc->sCmn.indices_LBRR[ psEnc->sCmn.nFramesEncoded ];
+ silk_nsq_state sNSQ_LBRR;
+
+ /*******************************************/
+ /* Control use of inband LBRR */
+ /*******************************************/
+ if( psEnc->sCmn.LBRR_enabled && psEnc->sCmn.speech_activity_Q8 > SILK_FIX_CONST( LBRR_SPEECH_ACTIVITY_THRES, 8 ) ) {
+ psEnc->sCmn.LBRR_flags[ psEnc->sCmn.nFramesEncoded ] = 1;
+
+ /* Copy noise shaping quantizer state and quantization indices from regular encoding */
+ silk_memcpy( &sNSQ_LBRR, &psEnc->sCmn.sNSQ, sizeof( silk_nsq_state ) );
+ silk_memcpy( psIndices_LBRR, &psEnc->sCmn.indices, sizeof( SideInfoIndices ) );
+
+ /* Save original gains */
+ silk_memcpy( TempGains_Q16, psEncCtrl->Gains_Q16, psEnc->sCmn.nb_subfr * sizeof( opus_int32 ) );
+
+ if( psEnc->sCmn.nFramesEncoded == 0 || psEnc->sCmn.LBRR_flags[ psEnc->sCmn.nFramesEncoded - 1 ] == 0 ) {
+ /* First frame in packet or previous frame not LBRR coded */
+ psEnc->sCmn.LBRRprevLastGainIndex = psEnc->sShape.LastGainIndex;
+
+ /* Increase Gains to get target LBRR rate */
+ psIndices_LBRR->GainsIndices[ 0 ] = psIndices_LBRR->GainsIndices[ 0 ] + psEnc->sCmn.LBRR_GainIncreases;
+ psIndices_LBRR->GainsIndices[ 0 ] = silk_min_int( psIndices_LBRR->GainsIndices[ 0 ], N_LEVELS_QGAIN - 1 );
+ }
+
+ /* Decode to get gains in sync with decoder */
+ /* Overwrite unquantized gains with quantized gains */
+ silk_gains_dequant( psEncCtrl->Gains_Q16, psIndices_LBRR->GainsIndices,
+ &psEnc->sCmn.LBRRprevLastGainIndex, psEnc->sCmn.nFramesEncoded, psEnc->sCmn.nb_subfr );
+
+ /*****************************************/
+ /* Noise shaping quantization */
+ /*****************************************/
+ if( psEnc->sCmn.nStatesDelayedDecision > 1 || psEnc->sCmn.warping_Q16 > 0 ) {
+ silk_NSQ_del_dec( &psEnc->sCmn, &sNSQ_LBRR, psIndices_LBRR, xfw,
+ psEnc->sCmn.pulses_LBRR[ psEnc->sCmn.nFramesEncoded ], psEncCtrl->PredCoef_Q12[ 0 ], psEncCtrl->LTPCoef_Q14,
+ psEncCtrl->AR2_Q13, psEncCtrl->HarmShapeGain_Q14, psEncCtrl->Tilt_Q14, psEncCtrl->LF_shp_Q14,
+ psEncCtrl->Gains_Q16, psEncCtrl->pitchL, psEncCtrl->Lambda_Q10, psEncCtrl->LTP_scale_Q14 );
+ } else {
+ silk_NSQ( &psEnc->sCmn, &sNSQ_LBRR, psIndices_LBRR, xfw,
+ psEnc->sCmn.pulses_LBRR[ psEnc->sCmn.nFramesEncoded ], psEncCtrl->PredCoef_Q12[ 0 ], psEncCtrl->LTPCoef_Q14,
+ psEncCtrl->AR2_Q13, psEncCtrl->HarmShapeGain_Q14, psEncCtrl->Tilt_Q14, psEncCtrl->LF_shp_Q14,
+ psEncCtrl->Gains_Q16, psEncCtrl->pitchL, psEncCtrl->Lambda_Q10, psEncCtrl->LTP_scale_Q14 );
+ }
+
+ /* Restore original gains */
+ silk_memcpy( psEncCtrl->Gains_Q16, TempGains_Q16, psEnc->sCmn.nb_subfr * sizeof( opus_int32 ) );
+ }
+}