diff options
Diffstat (limited to 'src/opus-1.0.2/silk/control_codec.c')
| -rw-r--r-- | src/opus-1.0.2/silk/control_codec.c | 411 |
1 files changed, 0 insertions, 411 deletions
diff --git a/src/opus-1.0.2/silk/control_codec.c b/src/opus-1.0.2/silk/control_codec.c deleted file mode 100644 index ecc338ce..00000000 --- a/src/opus-1.0.2/silk/control_codec.c +++ /dev/null @@ -1,411 +0,0 @@ -/*********************************************************************** -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 -#ifdef FIXED_POINT -#include "main_FIX.h" -#define silk_encoder_state_Fxx silk_encoder_state_FIX -#else -#include "main_FLP.h" -#define silk_encoder_state_Fxx silk_encoder_state_FLP -#endif -#include "tuning_parameters.h" -#include "pitch_est_defines.h" - -static opus_int silk_setup_resamplers( - silk_encoder_state_Fxx *psEnc, /* I/O */ - opus_int fs_kHz /* I */ -); - -static opus_int silk_setup_fs( - silk_encoder_state_Fxx *psEnc, /* I/O */ - opus_int fs_kHz, /* I */ - opus_int PacketSize_ms /* I */ -); - -static opus_int silk_setup_complexity( - silk_encoder_state *psEncC, /* I/O */ - opus_int Complexity /* I */ -); - -static inline opus_int silk_setup_LBRR( - silk_encoder_state *psEncC, /* I/O */ - const opus_int32 TargetRate_bps /* I */ -); - - -/* Control encoder */ -opus_int silk_control_encoder( - silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk encoder state */ - silk_EncControlStruct *encControl, /* I Control structure */ - const opus_int32 TargetRate_bps, /* I Target max bitrate (bps) */ - const opus_int allow_bw_switch, /* I Flag to allow switching audio bandwidth */ - const opus_int channelNb, /* I Channel number */ - const opus_int force_fs_kHz -) -{ - opus_int fs_kHz, ret = 0; - - psEnc->sCmn.useDTX = encControl->useDTX; - psEnc->sCmn.useCBR = encControl->useCBR; - psEnc->sCmn.API_fs_Hz = encControl->API_sampleRate; - psEnc->sCmn.maxInternal_fs_Hz = encControl->maxInternalSampleRate; - psEnc->sCmn.minInternal_fs_Hz = encControl->minInternalSampleRate; - psEnc->sCmn.desiredInternal_fs_Hz = encControl->desiredInternalSampleRate; - psEnc->sCmn.useInBandFEC = encControl->useInBandFEC; - psEnc->sCmn.nChannelsAPI = encControl->nChannelsAPI; - psEnc->sCmn.nChannelsInternal = encControl->nChannelsInternal; - psEnc->sCmn.allow_bandwidth_switch = allow_bw_switch; - psEnc->sCmn.channelNb = channelNb; - - if( psEnc->sCmn.controlled_since_last_payload != 0 && psEnc->sCmn.prefillFlag == 0 ) { - if( psEnc->sCmn.API_fs_Hz != psEnc->sCmn.prev_API_fs_Hz && psEnc->sCmn.fs_kHz > 0 ) { - /* Change in API sampling rate in the middle of encoding a packet */ - ret += silk_setup_resamplers( psEnc, psEnc->sCmn.fs_kHz ); - } - return ret; - } - - /* Beyond this point we know that there are no previously coded frames in the payload buffer */ - - /********************************************/ - /* Determine internal sampling rate */ - /********************************************/ - fs_kHz = silk_control_audio_bandwidth( &psEnc->sCmn, encControl ); - if( force_fs_kHz ) { - fs_kHz = force_fs_kHz; - } - /********************************************/ - /* Prepare resampler and buffered data */ - /********************************************/ - ret += silk_setup_resamplers( psEnc, fs_kHz ); - - /********************************************/ - /* Set internal sampling frequency */ - /********************************************/ - ret += silk_setup_fs( psEnc, fs_kHz, encControl->payloadSize_ms ); - - /********************************************/ - /* Set encoding complexity */ - /********************************************/ - ret += silk_setup_complexity( &psEnc->sCmn, encControl->complexity ); - - /********************************************/ - /* Set packet loss rate measured by farend */ - /********************************************/ - psEnc->sCmn.PacketLoss_perc = encControl->packetLossPercentage; - - /********************************************/ - /* Set LBRR usage */ - /********************************************/ - ret += silk_setup_LBRR( &psEnc->sCmn, TargetRate_bps ); - - psEnc->sCmn.controlled_since_last_payload = 1; - - return ret; -} - -static opus_int silk_setup_resamplers( - silk_encoder_state_Fxx *psEnc, /* I/O */ - opus_int fs_kHz /* I */ -) -{ - opus_int ret = SILK_NO_ERROR; - opus_int32 nSamples_temp; - - if( psEnc->sCmn.fs_kHz != fs_kHz || psEnc->sCmn.prev_API_fs_Hz != psEnc->sCmn.API_fs_Hz ) - { - if( psEnc->sCmn.fs_kHz == 0 ) { - /* Initialize the resampler for enc_API.c preparing resampling from API_fs_Hz to fs_kHz */ - ret += silk_resampler_init( &psEnc->sCmn.resampler_state, psEnc->sCmn.API_fs_Hz, fs_kHz * 1000, 1 ); - } else { - /* Allocate worst case space for temporary upsampling, 8 to 48 kHz, so a factor 6 */ - opus_int16 x_buf_API_fs_Hz[ ( 2 * MAX_FRAME_LENGTH_MS + LA_SHAPE_MS ) * MAX_API_FS_KHZ ]; - silk_resampler_state_struct temp_resampler_state; -#ifdef FIXED_POINT - opus_int16 *x_bufFIX = psEnc->x_buf; -#else - opus_int16 x_bufFIX[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ]; -#endif - - nSamples_temp = silk_LSHIFT( psEnc->sCmn.frame_length, 1 ) + LA_SHAPE_MS * psEnc->sCmn.fs_kHz; - -#ifndef FIXED_POINT - silk_float2short_array( x_bufFIX, psEnc->x_buf, nSamples_temp ); -#endif - - /* Initialize resampler for temporary resampling of x_buf data to API_fs_Hz */ - ret += silk_resampler_init( &temp_resampler_state, silk_SMULBB( psEnc->sCmn.fs_kHz, 1000 ), psEnc->sCmn.API_fs_Hz, 0 ); - - /* Temporary resampling of x_buf data to API_fs_Hz */ - ret += silk_resampler( &temp_resampler_state, x_buf_API_fs_Hz, x_bufFIX, nSamples_temp ); - - /* Calculate number of samples that has been temporarily upsampled */ - nSamples_temp = silk_DIV32_16( nSamples_temp * psEnc->sCmn.API_fs_Hz, silk_SMULBB( psEnc->sCmn.fs_kHz, 1000 ) ); - - /* Initialize the resampler for enc_API.c preparing resampling from API_fs_Hz to fs_kHz */ - ret += silk_resampler_init( &psEnc->sCmn.resampler_state, psEnc->sCmn.API_fs_Hz, silk_SMULBB( fs_kHz, 1000 ), 1 ); - - /* Correct resampler state by resampling buffered data from API_fs_Hz to fs_kHz */ - ret += silk_resampler( &psEnc->sCmn.resampler_state, x_bufFIX, x_buf_API_fs_Hz, nSamples_temp ); - -#ifndef FIXED_POINT - silk_short2float_array( psEnc->x_buf, x_bufFIX, ( 2 * MAX_FRAME_LENGTH_MS + LA_SHAPE_MS ) * fs_kHz ); -#endif - } - } - - psEnc->sCmn.prev_API_fs_Hz = psEnc->sCmn.API_fs_Hz; - - return ret; -} - -static opus_int silk_setup_fs( - silk_encoder_state_Fxx *psEnc, /* I/O */ - opus_int fs_kHz, /* I */ - opus_int PacketSize_ms /* I */ -) -{ - opus_int ret = SILK_NO_ERROR; - - /* Set packet size */ - if( PacketSize_ms != psEnc->sCmn.PacketSize_ms ) { - if( ( PacketSize_ms != 10 ) && - ( PacketSize_ms != 20 ) && - ( PacketSize_ms != 40 ) && - ( PacketSize_ms != 60 ) ) { - ret = SILK_ENC_PACKET_SIZE_NOT_SUPPORTED; - } - if( PacketSize_ms <= 10 ) { - psEnc->sCmn.nFramesPerPacket = 1; - psEnc->sCmn.nb_subfr = PacketSize_ms == 10 ? 2 : 1; - psEnc->sCmn.frame_length = silk_SMULBB( PacketSize_ms, fs_kHz ); - psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS_2_SF, fs_kHz ); - if( psEnc->sCmn.fs_kHz == 8 ) { - psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_NB_iCDF; - } else { - psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_iCDF; - } - } else { - psEnc->sCmn.nFramesPerPacket = silk_DIV32_16( PacketSize_ms, MAX_FRAME_LENGTH_MS ); - psEnc->sCmn.nb_subfr = MAX_NB_SUBFR; - psEnc->sCmn.frame_length = silk_SMULBB( 20, fs_kHz ); - psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz ); - if( psEnc->sCmn.fs_kHz == 8 ) { - psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_NB_iCDF; - } else { - psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_iCDF; - } - } - psEnc->sCmn.PacketSize_ms = PacketSize_ms; - psEnc->sCmn.TargetRate_bps = 0; /* trigger new SNR computation */ - } - - /* Set internal sampling frequency */ - silk_assert( fs_kHz == 8 || fs_kHz == 12 || fs_kHz == 16 ); - silk_assert( psEnc->sCmn.nb_subfr == 2 || psEnc->sCmn.nb_subfr == 4 ); - if( psEnc->sCmn.fs_kHz != fs_kHz ) { - /* reset part of the state */ - silk_memset( &psEnc->sShape, 0, sizeof( psEnc->sShape ) ); - silk_memset( &psEnc->sPrefilt, 0, sizeof( psEnc->sPrefilt ) ); - silk_memset( &psEnc->sCmn.sNSQ, 0, sizeof( psEnc->sCmn.sNSQ ) ); - silk_memset( psEnc->sCmn.prev_NLSFq_Q15, 0, sizeof( psEnc->sCmn.prev_NLSFq_Q15 ) ); - silk_memset( &psEnc->sCmn.sLP.In_LP_State, 0, sizeof( psEnc->sCmn.sLP.In_LP_State ) ); - psEnc->sCmn.inputBufIx = 0; - psEnc->sCmn.nFramesEncoded = 0; - psEnc->sCmn.TargetRate_bps = 0; /* trigger new SNR computation */ - - /* Initialize non-zero parameters */ - psEnc->sCmn.prevLag = 100; - psEnc->sCmn.first_frame_after_reset = 1; - psEnc->sPrefilt.lagPrev = 100; - psEnc->sShape.LastGainIndex = 10; - psEnc->sCmn.sNSQ.lagPrev = 100; - psEnc->sCmn.sNSQ.prev_gain_Q16 = 65536; - psEnc->sCmn.prevSignalType = TYPE_NO_VOICE_ACTIVITY; - - psEnc->sCmn.fs_kHz = fs_kHz; - if( psEnc->sCmn.fs_kHz == 8 ) { - if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) { - psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_NB_iCDF; - } else { - psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_NB_iCDF; - } - } else { - if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) { - psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_iCDF; - } else { - psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_iCDF; - } - } - if( psEnc->sCmn.fs_kHz == 8 || psEnc->sCmn.fs_kHz == 12 ) { - psEnc->sCmn.predictLPCOrder = MIN_LPC_ORDER; - psEnc->sCmn.psNLSF_CB = &silk_NLSF_CB_NB_MB; - } else { - psEnc->sCmn.predictLPCOrder = MAX_LPC_ORDER; - psEnc->sCmn.psNLSF_CB = &silk_NLSF_CB_WB; - } - psEnc->sCmn.subfr_length = SUB_FRAME_LENGTH_MS * fs_kHz; - psEnc->sCmn.frame_length = silk_SMULBB( psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr ); - psEnc->sCmn.ltp_mem_length = silk_SMULBB( LTP_MEM_LENGTH_MS, fs_kHz ); - psEnc->sCmn.la_pitch = silk_SMULBB( LA_PITCH_MS, fs_kHz ); - psEnc->sCmn.max_pitch_lag = silk_SMULBB( 18, fs_kHz ); - if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) { - psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz ); - } else { - psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS_2_SF, fs_kHz ); - } - if( psEnc->sCmn.fs_kHz == 16 ) { - psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_WB, 9 ); - psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform8_iCDF; - } else if( psEnc->sCmn.fs_kHz == 12 ) { - psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_MB, 9 ); - psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform6_iCDF; - } else { - psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_NB, 9 ); - psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform4_iCDF; - } - } - - /* Check that settings are valid */ - silk_assert( ( psEnc->sCmn.subfr_length * psEnc->sCmn.nb_subfr ) == psEnc->sCmn.frame_length ); - - return ret; -} - -static opus_int silk_setup_complexity( - silk_encoder_state *psEncC, /* I/O */ - opus_int Complexity /* I */ -) -{ - opus_int ret = 0; - - /* Set encoding complexity */ - silk_assert( Complexity >= 0 && Complexity <= 10 ); - if( Complexity < 2 ) { - psEncC->pitchEstimationComplexity = SILK_PE_MIN_COMPLEX; - psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.8, 16 ); - psEncC->pitchEstimationLPCOrder = 6; - psEncC->shapingLPCOrder = 8; - psEncC->la_shape = 3 * psEncC->fs_kHz; - psEncC->nStatesDelayedDecision = 1; - psEncC->useInterpolatedNLSFs = 0; - psEncC->LTPQuantLowComplexity = 1; - psEncC->NLSF_MSVQ_Survivors = 2; - psEncC->warping_Q16 = 0; - } else if( Complexity < 4 ) { - psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX; - psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.76, 16 ); - psEncC->pitchEstimationLPCOrder = 8; - psEncC->shapingLPCOrder = 10; - psEncC->la_shape = 5 * psEncC->fs_kHz; - psEncC->nStatesDelayedDecision = 1; - psEncC->useInterpolatedNLSFs = 0; - psEncC->LTPQuantLowComplexity = 0; - psEncC->NLSF_MSVQ_Survivors = 4; - psEncC->warping_Q16 = 0; - } else if( Complexity < 6 ) { - psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX; - psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.74, 16 ); - psEncC->pitchEstimationLPCOrder = 10; - psEncC->shapingLPCOrder = 12; - psEncC->la_shape = 5 * psEncC->fs_kHz; - psEncC->nStatesDelayedDecision = 2; - psEncC->useInterpolatedNLSFs = 1; - psEncC->LTPQuantLowComplexity = 0; - psEncC->NLSF_MSVQ_Survivors = 8; - psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 ); - } else if( Complexity < 8 ) { - psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX; - psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.72, 16 ); - psEncC->pitchEstimationLPCOrder = 12; - psEncC->shapingLPCOrder = 14; - psEncC->la_shape = 5 * psEncC->fs_kHz; - psEncC->nStatesDelayedDecision = 3; - psEncC->useInterpolatedNLSFs = 1; - psEncC->LTPQuantLowComplexity = 0; - psEncC->NLSF_MSVQ_Survivors = 16; - psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 ); - } else { - psEncC->pitchEstimationComplexity = SILK_PE_MAX_COMPLEX; - psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.7, 16 ); - psEncC->pitchEstimationLPCOrder = 16; - psEncC->shapingLPCOrder = 16; - psEncC->la_shape = 5 * psEncC->fs_kHz; - psEncC->nStatesDelayedDecision = MAX_DEL_DEC_STATES; - psEncC->useInterpolatedNLSFs = 1; - psEncC->LTPQuantLowComplexity = 0; - psEncC->NLSF_MSVQ_Survivors = 32; - psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 ); - } - - /* Do not allow higher pitch estimation LPC order than predict LPC order */ - psEncC->pitchEstimationLPCOrder = silk_min_int( psEncC->pitchEstimationLPCOrder, psEncC->predictLPCOrder ); - psEncC->shapeWinLength = SUB_FRAME_LENGTH_MS * psEncC->fs_kHz + 2 * psEncC->la_shape; - psEncC->Complexity = Complexity; - - silk_assert( psEncC->pitchEstimationLPCOrder <= MAX_FIND_PITCH_LPC_ORDER ); - silk_assert( psEncC->shapingLPCOrder <= MAX_SHAPE_LPC_ORDER ); - silk_assert( psEncC->nStatesDelayedDecision <= MAX_DEL_DEC_STATES ); - silk_assert( psEncC->warping_Q16 <= 32767 ); - silk_assert( psEncC->la_shape <= LA_SHAPE_MAX ); - silk_assert( psEncC->shapeWinLength <= SHAPE_LPC_WIN_MAX ); - silk_assert( psEncC->NLSF_MSVQ_Survivors <= NLSF_VQ_MAX_SURVIVORS ); - - return ret; -} - -static inline opus_int silk_setup_LBRR( - silk_encoder_state *psEncC, /* I/O */ - const opus_int32 TargetRate_bps /* I */ -) -{ - opus_int ret = SILK_NO_ERROR; - opus_int32 LBRR_rate_thres_bps; - - psEncC->LBRR_enabled = 0; - if( psEncC->useInBandFEC && psEncC->PacketLoss_perc > 0 ) { - if( psEncC->fs_kHz == 8 ) { - LBRR_rate_thres_bps = LBRR_NB_MIN_RATE_BPS; - } else if( psEncC->fs_kHz == 12 ) { - LBRR_rate_thres_bps = LBRR_MB_MIN_RATE_BPS; - } else { - LBRR_rate_thres_bps = LBRR_WB_MIN_RATE_BPS; - } - LBRR_rate_thres_bps = silk_SMULWB( silk_MUL( LBRR_rate_thres_bps, 125 - silk_min( psEncC->PacketLoss_perc, 25 ) ), SILK_FIX_CONST( 0.01, 16 ) ); - - if( TargetRate_bps > LBRR_rate_thres_bps ) { - /* Set gain increase for coding LBRR excitation */ - psEncC->LBRR_enabled = 1; - psEncC->LBRR_GainIncreases = silk_max_int( 7 - silk_SMULWB( (opus_int32)psEncC->PacketLoss_perc, SILK_FIX_CONST( 0.4, 16 ) ), 2 ); - } - } - - return ret; -} |