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233 lines
19 KiB
233 lines
19 KiB
/*********************************************************************** |
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Copyright (c) 2006-2011, Skype Limited. All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions |
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are met: |
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- Redistributions of source code must retain the above copyright notice, |
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this list of conditions and the following disclaimer. |
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- Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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- Neither the name of Internet Society, IETF or IETF Trust, nor the |
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names of specific contributors, may be used to endorse or promote |
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products derived from this software without specific prior written |
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permission. |
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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POSSIBILITY OF SUCH DAMAGE. |
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***********************************************************************/ |
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#ifndef SILK_MAIN_FIX_H |
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#define SILK_MAIN_FIX_H |
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#include "SigProc_FIX.h" |
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#include "structs_FIX.h" |
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#include "control.h" |
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#include "main.h" |
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#include "PLC.h" |
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#include "debug.h" |
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#include "entenc.h" |
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#if ((defined(OPUS_ARM_ASM) && defined(FIXED_POINT)) \ |
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|| defined(OPUS_ARM_MAY_HAVE_NEON_INTR)) |
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#include "fixed/arm/warped_autocorrelation_FIX_arm.h" |
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#endif |
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#define silk_encoder_state_Fxx silk_encoder_state_FIX |
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#define silk_encode_do_VAD_Fxx silk_encode_do_VAD_FIX |
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#define silk_encode_frame_Fxx silk_encode_frame_FIX |
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#define QC 10 |
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#define QS 13 |
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/*********************/ |
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/* Encoder Functions */ |
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/*********************/ |
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/* High-pass filter with cutoff frequency adaptation based on pitch lag statistics */ |
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void silk_HP_variable_cutoff( |
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silk_encoder_state_Fxx state_Fxx[] /* I/O Encoder states */ |
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); |
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/* Encoder main function */ |
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void silk_encode_do_VAD_FIX( |
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silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ |
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opus_int activity /* I Decision of Opus voice activity detector */ |
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); |
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/* Encoder main function */ |
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opus_int silk_encode_frame_FIX( |
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silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ |
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opus_int32 *pnBytesOut, /* O Pointer to number of payload bytes; */ |
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ec_enc *psRangeEnc, /* I/O compressor data structure */ |
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opus_int condCoding, /* I The type of conditional coding to use */ |
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opus_int maxBits, /* I If > 0: maximum number of output bits */ |
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opus_int useCBR /* I Flag to force constant-bitrate operation */ |
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); |
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/* Initializes the Silk encoder state */ |
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opus_int silk_init_encoder( |
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silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk FIX encoder state */ |
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int arch /* I Run-time architecture */ |
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); |
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/* Control the Silk encoder */ |
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opus_int silk_control_encoder( |
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silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk encoder state */ |
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silk_EncControlStruct *encControl, /* I Control structure */ |
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const opus_int allow_bw_switch, /* I Flag to allow switching audio bandwidth */ |
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const opus_int channelNb, /* I Channel number */ |
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const opus_int force_fs_kHz |
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); |
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/**************************/ |
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/* Noise shaping analysis */ |
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/**************************/ |
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/* Compute noise shaping coefficients and initial gain values */ |
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void silk_noise_shape_analysis_FIX( |
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silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */ |
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silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */ |
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const opus_int16 *pitch_res, /* I LPC residual from pitch analysis */ |
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const opus_int16 *x, /* I Input signal [ frame_length + la_shape ] */ |
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int arch /* I Run-time architecture */ |
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); |
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/* Autocorrelations for a warped frequency axis */ |
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void silk_warped_autocorrelation_FIX_c( |
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opus_int32 *corr, /* O Result [order + 1] */ |
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opus_int *scale, /* O Scaling of the correlation vector */ |
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const opus_int16 *input, /* I Input data to correlate */ |
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const opus_int warping_Q16, /* I Warping coefficient */ |
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const opus_int length, /* I Length of input */ |
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const opus_int order /* I Correlation order (even) */ |
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); |
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#if !defined(OVERRIDE_silk_warped_autocorrelation_FIX) |
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#define silk_warped_autocorrelation_FIX(corr, scale, input, warping_Q16, length, order, arch) \ |
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((void)(arch), silk_warped_autocorrelation_FIX_c(corr, scale, input, warping_Q16, length, order)) |
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#endif |
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/* Calculation of LTP state scaling */ |
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void silk_LTP_scale_ctrl_FIX( |
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silk_encoder_state_FIX *psEnc, /* I/O encoder state */ |
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silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ |
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opus_int condCoding /* I The type of conditional coding to use */ |
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); |
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/**********************************************/ |
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/* Prediction Analysis */ |
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/**********************************************/ |
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/* Find pitch lags */ |
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void silk_find_pitch_lags_FIX( |
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silk_encoder_state_FIX *psEnc, /* I/O encoder state */ |
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silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ |
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opus_int16 res[], /* O residual */ |
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const opus_int16 x[], /* I Speech signal */ |
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int arch /* I Run-time architecture */ |
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); |
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/* Find LPC and LTP coefficients */ |
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void silk_find_pred_coefs_FIX( |
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silk_encoder_state_FIX *psEnc, /* I/O encoder state */ |
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silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ |
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const opus_int16 res_pitch[], /* I Residual from pitch analysis */ |
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const opus_int16 x[], /* I Speech signal */ |
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opus_int condCoding /* I The type of conditional coding to use */ |
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); |
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/* LPC analysis */ |
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void silk_find_LPC_FIX( |
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silk_encoder_state *psEncC, /* I/O Encoder state */ |
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opus_int16 NLSF_Q15[], /* O NLSFs */ |
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const opus_int16 x[], /* I Input signal */ |
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const opus_int32 minInvGain_Q30 /* I Inverse of max prediction gain */ |
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); |
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/* LTP analysis */ |
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void silk_find_LTP_FIX( |
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opus_int32 XXLTP_Q17[ MAX_NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* O Correlation matrix */ |
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opus_int32 xXLTP_Q17[ MAX_NB_SUBFR * LTP_ORDER ], /* O Correlation vector */ |
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const opus_int16 r_lpc[], /* I Residual signal after LPC */ |
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const opus_int lag[ MAX_NB_SUBFR ], /* I LTP lags */ |
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const opus_int subfr_length, /* I Subframe length */ |
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const opus_int nb_subfr, /* I Number of subframes */ |
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int arch /* I Run-time architecture */ |
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); |
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void silk_LTP_analysis_filter_FIX( |
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opus_int16 *LTP_res, /* O LTP residual signal of length MAX_NB_SUBFR * ( pre_length + subfr_length ) */ |
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const opus_int16 *x, /* I Pointer to input signal with at least max( pitchL ) preceding samples */ |
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const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ],/* I LTP_ORDER LTP coefficients for each MAX_NB_SUBFR subframe */ |
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const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag, one for each subframe */ |
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const opus_int32 invGains_Q16[ MAX_NB_SUBFR ], /* I Inverse quantization gains, one for each subframe */ |
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const opus_int subfr_length, /* I Length of each subframe */ |
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const opus_int nb_subfr, /* I Number of subframes */ |
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const opus_int pre_length /* I Length of the preceding samples starting at &x[0] for each subframe */ |
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); |
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/* Calculates residual energies of input subframes where all subframes have LPC_order */ |
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/* of preceding samples */ |
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void silk_residual_energy_FIX( |
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opus_int32 nrgs[ MAX_NB_SUBFR ], /* O Residual energy per subframe */ |
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opus_int nrgsQ[ MAX_NB_SUBFR ], /* O Q value per subframe */ |
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const opus_int16 x[], /* I Input signal */ |
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opus_int16 a_Q12[ 2 ][ MAX_LPC_ORDER ], /* I AR coefs for each frame half */ |
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const opus_int32 gains[ MAX_NB_SUBFR ], /* I Quantization gains */ |
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const opus_int subfr_length, /* I Subframe length */ |
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const opus_int nb_subfr, /* I Number of subframes */ |
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const opus_int LPC_order, /* I LPC order */ |
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int arch /* I Run-time architecture */ |
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); |
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/* Residual energy: nrg = wxx - 2 * wXx * c + c' * wXX * c */ |
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opus_int32 silk_residual_energy16_covar_FIX( |
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const opus_int16 *c, /* I Prediction vector */ |
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const opus_int32 *wXX, /* I Correlation matrix */ |
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const opus_int32 *wXx, /* I Correlation vector */ |
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opus_int32 wxx, /* I Signal energy */ |
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opus_int D, /* I Dimension */ |
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opus_int cQ /* I Q value for c vector 0 - 15 */ |
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); |
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/* Processing of gains */ |
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void silk_process_gains_FIX( |
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silk_encoder_state_FIX *psEnc, /* I/O Encoder state */ |
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silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control */ |
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opus_int condCoding /* I The type of conditional coding to use */ |
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); |
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/******************/ |
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/* Linear Algebra */ |
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/******************/ |
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/* Calculates correlation matrix X'*X */ |
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void silk_corrMatrix_FIX( |
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const opus_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */ |
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const opus_int L, /* I Length of vectors */ |
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const opus_int order, /* I Max lag for correlation */ |
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opus_int32 *XX, /* O Pointer to X'*X correlation matrix [ order x order ] */ |
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opus_int32 *nrg, /* O Energy of x vector */ |
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opus_int *rshifts, /* O Right shifts of correlations */ |
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int arch /* I Run-time architecture */ |
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); |
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/* Calculates correlation vector X'*t */ |
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void silk_corrVector_FIX( |
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const opus_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */ |
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const opus_int16 *t, /* I Target vector [L] */ |
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const opus_int L, /* I Length of vectors */ |
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const opus_int order, /* I Max lag for correlation */ |
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opus_int32 *Xt, /* O Pointer to X'*t correlation vector [order] */ |
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const opus_int rshifts, /* I Right shifts of correlations */ |
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int arch /* I Run-time architecture */ |
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); |
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#endif /* SILK_MAIN_FIX_H */
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