diff options
author | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2011-09-16 12:16:53 +0400 |
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committer | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2011-09-16 12:16:53 +0400 |
commit | 1c2f5633d101c08b5ef8095a8682d3d52cbd952d (patch) | |
tree | 66f80e67f075db5fa5233759a89f475d8bedade2 /silk/fixed/encode_frame_FIX.c | |
parent | fb3a437c9dabb4aafe4a3927158161590ed745ab (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.c | 305 |
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 ) ); + } +} |