2411 lines
75 KiB
C
2411 lines
75 KiB
C
/* Copyright (c) 2007-2008 CSIRO
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Copyright (c) 2007-2010 Xiph.Org Foundation
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Copyright (c) 2008 Gregory Maxwell
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Written by Jean-Marc Valin and Gregory Maxwell */
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/*
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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
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notice, 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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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#define CELT_ENCODER_C
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#include "cpu_support.h"
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#include "os_support.h"
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#include "mdct.h"
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#include <math.h>
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#include "celt.h"
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#include "pitch.h"
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#include "bands.h"
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#include "modes.h"
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#include "entcode.h"
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#include "quant_bands.h"
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#include "rate.h"
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#include "stack_alloc.h"
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#include "mathops.h"
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#include "float_cast.h"
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#include <stdarg.h>
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#include "celt_lpc.h"
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#include "vq.h"
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/** Encoder state
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@brief Encoder state
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*/
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struct OpusCustomEncoder {
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const OpusCustomMode *mode; /**< Mode used by the encoder */
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int channels;
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int stream_channels;
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int force_intra;
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int clip;
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int disable_pf;
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int complexity;
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int upsample;
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int start, end;
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opus_int32 bitrate;
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int vbr;
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int signalling;
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int constrained_vbr; /* If zero, VBR can do whatever it likes with the rate */
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int loss_rate;
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int lsb_depth;
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int variable_duration;
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int lfe;
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int arch;
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/* Everything beyond this point gets cleared on a reset */
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#define ENCODER_RESET_START rng
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opus_uint32 rng;
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int spread_decision;
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opus_val32 delayedIntra;
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int tonal_average;
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int lastCodedBands;
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int hf_average;
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int tapset_decision;
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int prefilter_period;
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opus_val16 prefilter_gain;
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int prefilter_tapset;
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#ifdef RESYNTH
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int prefilter_period_old;
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opus_val16 prefilter_gain_old;
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int prefilter_tapset_old;
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#endif
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int consec_transient;
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AnalysisInfo analysis;
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opus_val32 preemph_memE[2];
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opus_val32 preemph_memD[2];
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/* VBR-related parameters */
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opus_int32 vbr_reservoir;
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opus_int32 vbr_drift;
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opus_int32 vbr_offset;
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opus_int32 vbr_count;
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opus_val32 overlap_max;
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opus_val16 stereo_saving;
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int intensity;
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opus_val16 *energy_mask;
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opus_val16 spec_avg;
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#ifdef RESYNTH
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/* +MAX_PERIOD/2 to make space for overlap */
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celt_sig syn_mem[2][2*MAX_PERIOD+MAX_PERIOD/2];
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#endif
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celt_sig in_mem[1]; /* Size = channels*mode->overlap */
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/* celt_sig prefilter_mem[], Size = channels*COMBFILTER_MAXPERIOD */
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/* opus_val16 oldBandE[], Size = channels*mode->nbEBands */
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/* opus_val16 oldLogE[], Size = channels*mode->nbEBands */
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/* opus_val16 oldLogE2[], Size = channels*mode->nbEBands */
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};
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int celt_encoder_get_size(int channels)
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{
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CELTMode *mode = opus_custom_mode_create(48000, 960, NULL);
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return opus_custom_encoder_get_size(mode, channels);
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}
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OPUS_CUSTOM_NOSTATIC int opus_custom_encoder_get_size(const CELTMode *mode, int channels)
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{
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int size = sizeof(struct CELTEncoder)
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+ (channels*mode->overlap-1)*sizeof(celt_sig) /* celt_sig in_mem[channels*mode->overlap]; */
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+ channels*COMBFILTER_MAXPERIOD*sizeof(celt_sig) /* celt_sig prefilter_mem[channels*COMBFILTER_MAXPERIOD]; */
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+ 3*channels*mode->nbEBands*sizeof(opus_val16); /* opus_val16 oldBandE[channels*mode->nbEBands]; */
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/* opus_val16 oldLogE[channels*mode->nbEBands]; */
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/* opus_val16 oldLogE2[channels*mode->nbEBands]; */
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return size;
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}
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#ifdef CUSTOM_MODES
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CELTEncoder *opus_custom_encoder_create(const CELTMode *mode, int channels, int *error)
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{
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int ret;
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CELTEncoder *st = (CELTEncoder *)opus_alloc(opus_custom_encoder_get_size(mode, channels));
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/* init will handle the NULL case */
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ret = opus_custom_encoder_init(st, mode, channels);
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if (ret != OPUS_OK)
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{
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opus_custom_encoder_destroy(st);
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st = NULL;
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}
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if (error)
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*error = ret;
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return st;
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}
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#endif /* CUSTOM_MODES */
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static int opus_custom_encoder_init_arch(CELTEncoder *st, const CELTMode *mode,
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int channels, int arch)
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{
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if (channels < 0 || channels > 2)
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return OPUS_BAD_ARG;
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if (st==NULL || mode==NULL)
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return OPUS_ALLOC_FAIL;
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OPUS_CLEAR((char*)st, opus_custom_encoder_get_size(mode, channels));
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st->mode = mode;
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st->stream_channels = st->channels = channels;
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st->upsample = 1;
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st->start = 0;
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st->end = st->mode->effEBands;
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st->signalling = 1;
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st->arch = arch;
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st->constrained_vbr = 1;
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st->clip = 1;
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st->bitrate = OPUS_BITRATE_MAX;
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st->vbr = 0;
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st->force_intra = 0;
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st->complexity = 5;
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st->lsb_depth=24;
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opus_custom_encoder_ctl(st, OPUS_RESET_STATE);
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return OPUS_OK;
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}
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#ifdef CUSTOM_MODES
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int opus_custom_encoder_init(CELTEncoder *st, const CELTMode *mode, int channels)
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{
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return opus_custom_encoder_init_arch(st, mode, channels, opus_select_arch());
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}
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#endif
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int celt_encoder_init(CELTEncoder *st, opus_int32 sampling_rate, int channels,
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int arch)
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{
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int ret;
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ret = opus_custom_encoder_init_arch(st,
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opus_custom_mode_create(48000, 960, NULL), channels, arch);
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if (ret != OPUS_OK)
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return ret;
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st->upsample = resampling_factor(sampling_rate);
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return OPUS_OK;
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}
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#ifdef CUSTOM_MODES
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void opus_custom_encoder_destroy(CELTEncoder *st)
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{
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opus_free(st);
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}
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#endif /* CUSTOM_MODES */
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static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int C,
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opus_val16 *tf_estimate, int *tf_chan)
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{
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int i;
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VARDECL(opus_val16, tmp);
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opus_val32 mem0,mem1;
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int is_transient = 0;
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opus_int32 mask_metric = 0;
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int c;
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opus_val16 tf_max;
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int len2;
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/* Table of 6*64/x, trained on real data to minimize the average error */
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static const unsigned char inv_table[128] = {
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255,255,156,110, 86, 70, 59, 51, 45, 40, 37, 33, 31, 28, 26, 25,
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23, 22, 21, 20, 19, 18, 17, 16, 16, 15, 15, 14, 13, 13, 12, 12,
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12, 12, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8,
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8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6,
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6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5,
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5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2,
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};
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SAVE_STACK;
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ALLOC(tmp, len, opus_val16);
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len2=len/2;
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for (c=0;c<C;c++)
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{
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opus_val32 mean;
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opus_int32 unmask=0;
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opus_val32 norm;
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opus_val16 maxE;
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mem0=0;
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mem1=0;
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/* High-pass filter: (1 - 2*z^-1 + z^-2) / (1 - z^-1 + .5*z^-2) */
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for (i=0;i<len;i++)
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{
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opus_val32 x,y;
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x = SHR32(in[i+c*len],SIG_SHIFT);
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y = ADD32(mem0, x);
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#ifdef FIXED_POINT
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mem0 = mem1 + y - SHL32(x,1);
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mem1 = x - SHR32(y,1);
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#else
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mem0 = mem1 + y - 2*x;
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mem1 = x - .5f*y;
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#endif
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tmp[i] = EXTRACT16(SHR32(y,2));
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/*printf("%f ", tmp[i]);*/
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}
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/*printf("\n");*/
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/* First few samples are bad because we don't propagate the memory */
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OPUS_CLEAR(tmp, 12);
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#ifdef FIXED_POINT
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/* Normalize tmp to max range */
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{
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int shift=0;
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shift = 14-celt_ilog2(1+celt_maxabs16(tmp, len));
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if (shift!=0)
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{
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for (i=0;i<len;i++)
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tmp[i] = SHL16(tmp[i], shift);
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}
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}
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#endif
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mean=0;
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mem0=0;
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/* Grouping by two to reduce complexity */
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/* Forward pass to compute the post-echo threshold*/
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for (i=0;i<len2;i++)
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{
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opus_val16 x2 = PSHR32(MULT16_16(tmp[2*i],tmp[2*i]) + MULT16_16(tmp[2*i+1],tmp[2*i+1]),16);
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mean += x2;
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#ifdef FIXED_POINT
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/* FIXME: Use PSHR16() instead */
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tmp[i] = mem0 + PSHR32(x2-mem0,4);
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#else
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tmp[i] = mem0 + MULT16_16_P15(QCONST16(.0625f,15),x2-mem0);
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#endif
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mem0 = tmp[i];
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}
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mem0=0;
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maxE=0;
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/* Backward pass to compute the pre-echo threshold */
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for (i=len2-1;i>=0;i--)
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{
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#ifdef FIXED_POINT
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/* FIXME: Use PSHR16() instead */
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tmp[i] = mem0 + PSHR32(tmp[i]-mem0,3);
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#else
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tmp[i] = mem0 + MULT16_16_P15(QCONST16(0.125f,15),tmp[i]-mem0);
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#endif
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mem0 = tmp[i];
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maxE = MAX16(maxE, mem0);
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}
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/*for (i=0;i<len2;i++)printf("%f ", tmp[i]/mean);printf("\n");*/
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/* Compute the ratio of the "frame energy" over the harmonic mean of the energy.
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This essentially corresponds to a bitrate-normalized temporal noise-to-mask
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ratio */
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/* As a compromise with the old transient detector, frame energy is the
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geometric mean of the energy and half the max */
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#ifdef FIXED_POINT
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/* Costs two sqrt() to avoid overflows */
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mean = MULT16_16(celt_sqrt(mean), celt_sqrt(MULT16_16(maxE,len2>>1)));
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#else
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mean = celt_sqrt(mean * maxE*.5*len2);
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#endif
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/* Inverse of the mean energy in Q15+6 */
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norm = SHL32(EXTEND32(len2),6+14)/ADD32(EPSILON,SHR32(mean,1));
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/* Compute harmonic mean discarding the unreliable boundaries
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The data is smooth, so we only take 1/4th of the samples */
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unmask=0;
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for (i=12;i<len2-5;i+=4)
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{
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int id;
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#ifdef FIXED_POINT
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id = MAX32(0,MIN32(127,MULT16_32_Q15(tmp[i]+EPSILON,norm))); /* Do not round to nearest */
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#else
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id = (int)MAX32(0,MIN32(127,floor(64*norm*(tmp[i]+EPSILON)))); /* Do not round to nearest */
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#endif
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unmask += inv_table[id];
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}
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/*printf("%d\n", unmask);*/
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/* Normalize, compensate for the 1/4th of the sample and the factor of 6 in the inverse table */
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unmask = 64*unmask*4/(6*(len2-17));
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if (unmask>mask_metric)
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{
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*tf_chan = c;
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mask_metric = unmask;
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}
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}
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is_transient = mask_metric>200;
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/* Arbitrary metric for VBR boost */
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tf_max = MAX16(0,celt_sqrt(27*mask_metric)-42);
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/* *tf_estimate = 1 + MIN16(1, sqrt(MAX16(0, tf_max-30))/20); */
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*tf_estimate = celt_sqrt(MAX32(0, SHL32(MULT16_16(QCONST16(0.0069,14),MIN16(163,tf_max)),14)-QCONST32(0.139,28)));
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/*printf("%d %f\n", tf_max, mask_metric);*/
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RESTORE_STACK;
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#ifdef FUZZING
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is_transient = rand()&0x1;
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#endif
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/*printf("%d %f %d\n", is_transient, (float)*tf_estimate, tf_max);*/
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return is_transient;
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}
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/* Looks for sudden increases of energy to decide whether we need to patch
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the transient decision */
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static int patch_transient_decision(opus_val16 *newE, opus_val16 *oldE, int nbEBands,
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int start, int end, int C)
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{
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int i, c;
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opus_val32 mean_diff=0;
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opus_val16 spread_old[26];
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/* Apply an aggressive (-6 dB/Bark) spreading function to the old frame to
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avoid false detection caused by irrelevant bands */
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if (C==1)
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{
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spread_old[start] = oldE[start];
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for (i=start+1;i<end;i++)
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spread_old[i] = MAX16(spread_old[i-1]-QCONST16(1.0f, DB_SHIFT), oldE[i]);
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} else {
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spread_old[start] = MAX16(oldE[start],oldE[start+nbEBands]);
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for (i=start+1;i<end;i++)
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spread_old[i] = MAX16(spread_old[i-1]-QCONST16(1.0f, DB_SHIFT),
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MAX16(oldE[i],oldE[i+nbEBands]));
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}
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for (i=end-2;i>=start;i--)
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spread_old[i] = MAX16(spread_old[i], spread_old[i+1]-QCONST16(1.0f, DB_SHIFT));
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/* Compute mean increase */
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c=0; do {
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for (i=IMAX(2,start);i<end-1;i++)
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{
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opus_val16 x1, x2;
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x1 = MAX16(0, newE[i + c*nbEBands]);
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x2 = MAX16(0, spread_old[i]);
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mean_diff = ADD32(mean_diff, EXTEND32(MAX16(0, SUB16(x1, x2))));
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}
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} while (++c<C);
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mean_diff = DIV32(mean_diff, C*(end-1-IMAX(2,start)));
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/*printf("%f %f %d\n", mean_diff, max_diff, count);*/
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return mean_diff > QCONST16(1.f, DB_SHIFT);
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}
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/** Apply window and compute the MDCT for all sub-frames and
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all channels in a frame */
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static void compute_mdcts(const CELTMode *mode, int shortBlocks, celt_sig * OPUS_RESTRICT in,
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celt_sig * OPUS_RESTRICT out, int C, int CC, int LM, int upsample,
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int arch)
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{
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const int overlap = mode->overlap;
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int N;
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int B;
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int shift;
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int i, b, c;
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if (shortBlocks)
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{
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B = shortBlocks;
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N = mode->shortMdctSize;
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shift = mode->maxLM;
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} else {
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B = 1;
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N = mode->shortMdctSize<<LM;
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shift = mode->maxLM-LM;
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}
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c=0; do {
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for (b=0;b<B;b++)
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{
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/* Interleaving the sub-frames while doing the MDCTs */
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clt_mdct_forward(&mode->mdct, in+c*(B*N+overlap)+b*N,
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&out[b+c*N*B], mode->window, overlap, shift, B,
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arch);
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}
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} while (++c<CC);
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if (CC==2&&C==1)
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{
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for (i=0;i<B*N;i++)
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out[i] = ADD32(HALF32(out[i]), HALF32(out[B*N+i]));
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}
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if (upsample != 1)
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{
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c=0; do
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{
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int bound = B*N/upsample;
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for (i=0;i<bound;i++)
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out[c*B*N+i] *= upsample;
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OPUS_CLEAR(&out[c*B*N+bound], B*N-bound);
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} while (++c<C);
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}
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}
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void celt_preemphasis(const opus_val16 * OPUS_RESTRICT pcmp, celt_sig * OPUS_RESTRICT inp,
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int N, int CC, int upsample, const opus_val16 *coef, celt_sig *mem, int clip)
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{
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int i;
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opus_val16 coef0;
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celt_sig m;
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int Nu;
|
|
|
|
coef0 = coef[0];
|
|
m = *mem;
|
|
|
|
/* Fast path for the normal 48kHz case and no clipping */
|
|
if (coef[1] == 0 && upsample == 1 && !clip)
|
|
{
|
|
for (i=0;i<N;i++)
|
|
{
|
|
opus_val16 x;
|
|
x = SCALEIN(pcmp[CC*i]);
|
|
/* Apply pre-emphasis */
|
|
inp[i] = SHL32(x, SIG_SHIFT) - m;
|
|
m = SHR32(MULT16_16(coef0, x), 15-SIG_SHIFT);
|
|
}
|
|
*mem = m;
|
|
return;
|
|
}
|
|
|
|
Nu = N/upsample;
|
|
if (upsample!=1)
|
|
{
|
|
OPUS_CLEAR(inp, N);
|
|
}
|
|
for (i=0;i<Nu;i++)
|
|
inp[i*upsample] = SCALEIN(pcmp[CC*i]);
|
|
|
|
#ifndef FIXED_POINT
|
|
if (clip)
|
|
{
|
|
/* Clip input to avoid encoding non-portable files */
|
|
for (i=0;i<Nu;i++)
|
|
inp[i*upsample] = MAX32(-65536.f, MIN32(65536.f,inp[i*upsample]));
|
|
}
|
|
#else
|
|
(void)clip; /* Avoids a warning about clip being unused. */
|
|
#endif
|
|
#ifdef CUSTOM_MODES
|
|
if (coef[1] != 0)
|
|
{
|
|
opus_val16 coef1 = coef[1];
|
|
opus_val16 coef2 = coef[2];
|
|
for (i=0;i<N;i++)
|
|
{
|
|
celt_sig x, tmp;
|
|
x = inp[i];
|
|
/* Apply pre-emphasis */
|
|
tmp = MULT16_16(coef2, x);
|
|
inp[i] = tmp + m;
|
|
m = MULT16_32_Q15(coef1, inp[i]) - MULT16_32_Q15(coef0, tmp);
|
|
}
|
|
} else
|
|
#endif
|
|
{
|
|
for (i=0;i<N;i++)
|
|
{
|
|
opus_val16 x;
|
|
x = inp[i];
|
|
/* Apply pre-emphasis */
|
|
inp[i] = SHL32(x, SIG_SHIFT) - m;
|
|
m = SHR32(MULT16_16(coef0, x), 15-SIG_SHIFT);
|
|
}
|
|
}
|
|
*mem = m;
|
|
}
|
|
|
|
|
|
|
|
static opus_val32 l1_metric(const celt_norm *tmp, int N, int LM, opus_val16 bias)
|
|
{
|
|
int i;
|
|
opus_val32 L1;
|
|
L1 = 0;
|
|
for (i=0;i<N;i++)
|
|
L1 += EXTEND32(ABS16(tmp[i]));
|
|
/* When in doubt, prefer good freq resolution */
|
|
L1 = MAC16_32_Q15(L1, LM*bias, L1);
|
|
return L1;
|
|
|
|
}
|
|
|
|
static int tf_analysis(const CELTMode *m, int len, int isTransient,
|
|
int *tf_res, int lambda, celt_norm *X, int N0, int LM,
|
|
int *tf_sum, opus_val16 tf_estimate, int tf_chan)
|
|
{
|
|
int i;
|
|
VARDECL(int, metric);
|
|
int cost0;
|
|
int cost1;
|
|
VARDECL(int, path0);
|
|
VARDECL(int, path1);
|
|
VARDECL(celt_norm, tmp);
|
|
VARDECL(celt_norm, tmp_1);
|
|
int sel;
|
|
int selcost[2];
|
|
int tf_select=0;
|
|
opus_val16 bias;
|
|
|
|
SAVE_STACK;
|
|
bias = MULT16_16_Q14(QCONST16(.04f,15), MAX16(-QCONST16(.25f,14), QCONST16(.5f,14)-tf_estimate));
|
|
/*printf("%f ", bias);*/
|
|
|
|
ALLOC(metric, len, int);
|
|
ALLOC(tmp, (m->eBands[len]-m->eBands[len-1])<<LM, celt_norm);
|
|
ALLOC(tmp_1, (m->eBands[len]-m->eBands[len-1])<<LM, celt_norm);
|
|
ALLOC(path0, len, int);
|
|
ALLOC(path1, len, int);
|
|
|
|
*tf_sum = 0;
|
|
for (i=0;i<len;i++)
|
|
{
|
|
int k, N;
|
|
int narrow;
|
|
opus_val32 L1, best_L1;
|
|
int best_level=0;
|
|
N = (m->eBands[i+1]-m->eBands[i])<<LM;
|
|
/* band is too narrow to be split down to LM=-1 */
|
|
narrow = (m->eBands[i+1]-m->eBands[i])==1;
|
|
OPUS_COPY(tmp, &X[tf_chan*N0 + (m->eBands[i]<<LM)], N);
|
|
/* Just add the right channel if we're in stereo */
|
|
/*if (C==2)
|
|
for (j=0;j<N;j++)
|
|
tmp[j] = ADD16(SHR16(tmp[j], 1),SHR16(X[N0+j+(m->eBands[i]<<LM)], 1));*/
|
|
L1 = l1_metric(tmp, N, isTransient ? LM : 0, bias);
|
|
best_L1 = L1;
|
|
/* Check the -1 case for transients */
|
|
if (isTransient && !narrow)
|
|
{
|
|
OPUS_COPY(tmp_1, tmp, N);
|
|
haar1(tmp_1, N>>LM, 1<<LM);
|
|
L1 = l1_metric(tmp_1, N, LM+1, bias);
|
|
if (L1<best_L1)
|
|
{
|
|
best_L1 = L1;
|
|
best_level = -1;
|
|
}
|
|
}
|
|
/*printf ("%f ", L1);*/
|
|
for (k=0;k<LM+!(isTransient||narrow);k++)
|
|
{
|
|
int B;
|
|
|
|
if (isTransient)
|
|
B = (LM-k-1);
|
|
else
|
|
B = k+1;
|
|
|
|
haar1(tmp, N>>k, 1<<k);
|
|
|
|
L1 = l1_metric(tmp, N, B, bias);
|
|
|
|
if (L1 < best_L1)
|
|
{
|
|
best_L1 = L1;
|
|
best_level = k+1;
|
|
}
|
|
}
|
|
/*printf ("%d ", isTransient ? LM-best_level : best_level);*/
|
|
/* metric is in Q1 to be able to select the mid-point (-0.5) for narrower bands */
|
|
if (isTransient)
|
|
metric[i] = 2*best_level;
|
|
else
|
|
metric[i] = -2*best_level;
|
|
*tf_sum += (isTransient ? LM : 0) - metric[i]/2;
|
|
/* For bands that can't be split to -1, set the metric to the half-way point to avoid
|
|
biasing the decision */
|
|
if (narrow && (metric[i]==0 || metric[i]==-2*LM))
|
|
metric[i]-=1;
|
|
/*printf("%d ", metric[i]);*/
|
|
}
|
|
/*printf("\n");*/
|
|
/* Search for the optimal tf resolution, including tf_select */
|
|
tf_select = 0;
|
|
for (sel=0;sel<2;sel++)
|
|
{
|
|
cost0 = 0;
|
|
cost1 = isTransient ? 0 : lambda;
|
|
for (i=1;i<len;i++)
|
|
{
|
|
int curr0, curr1;
|
|
curr0 = IMIN(cost0, cost1 + lambda);
|
|
curr1 = IMIN(cost0 + lambda, cost1);
|
|
cost0 = curr0 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*sel+0]);
|
|
cost1 = curr1 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*sel+1]);
|
|
}
|
|
cost0 = IMIN(cost0, cost1);
|
|
selcost[sel]=cost0;
|
|
}
|
|
/* For now, we're conservative and only allow tf_select=1 for transients.
|
|
* If tests confirm it's useful for non-transients, we could allow it. */
|
|
if (selcost[1]<selcost[0] && isTransient)
|
|
tf_select=1;
|
|
cost0 = 0;
|
|
cost1 = isTransient ? 0 : lambda;
|
|
/* Viterbi forward pass */
|
|
for (i=1;i<len;i++)
|
|
{
|
|
int curr0, curr1;
|
|
int from0, from1;
|
|
|
|
from0 = cost0;
|
|
from1 = cost1 + lambda;
|
|
if (from0 < from1)
|
|
{
|
|
curr0 = from0;
|
|
path0[i]= 0;
|
|
} else {
|
|
curr0 = from1;
|
|
path0[i]= 1;
|
|
}
|
|
|
|
from0 = cost0 + lambda;
|
|
from1 = cost1;
|
|
if (from0 < from1)
|
|
{
|
|
curr1 = from0;
|
|
path1[i]= 0;
|
|
} else {
|
|
curr1 = from1;
|
|
path1[i]= 1;
|
|
}
|
|
cost0 = curr0 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*tf_select+0]);
|
|
cost1 = curr1 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*tf_select+1]);
|
|
}
|
|
tf_res[len-1] = cost0 < cost1 ? 0 : 1;
|
|
/* Viterbi backward pass to check the decisions */
|
|
for (i=len-2;i>=0;i--)
|
|
{
|
|
if (tf_res[i+1] == 1)
|
|
tf_res[i] = path1[i+1];
|
|
else
|
|
tf_res[i] = path0[i+1];
|
|
}
|
|
/*printf("%d %f\n", *tf_sum, tf_estimate);*/
|
|
RESTORE_STACK;
|
|
#ifdef FUZZING
|
|
tf_select = rand()&0x1;
|
|
tf_res[0] = rand()&0x1;
|
|
for (i=1;i<len;i++)
|
|
tf_res[i] = tf_res[i-1] ^ ((rand()&0xF) == 0);
|
|
#endif
|
|
return tf_select;
|
|
}
|
|
|
|
static void tf_encode(int start, int end, int isTransient, int *tf_res, int LM, int tf_select, ec_enc *enc)
|
|
{
|
|
int curr, i;
|
|
int tf_select_rsv;
|
|
int tf_changed;
|
|
int logp;
|
|
opus_uint32 budget;
|
|
opus_uint32 tell;
|
|
budget = enc->storage*8;
|
|
tell = ec_tell(enc);
|
|
logp = isTransient ? 2 : 4;
|
|
/* Reserve space to code the tf_select decision. */
|
|
tf_select_rsv = LM>0 && tell+logp+1 <= budget;
|
|
budget -= tf_select_rsv;
|
|
curr = tf_changed = 0;
|
|
for (i=start;i<end;i++)
|
|
{
|
|
if (tell+logp<=budget)
|
|
{
|
|
ec_enc_bit_logp(enc, tf_res[i] ^ curr, logp);
|
|
tell = ec_tell(enc);
|
|
curr = tf_res[i];
|
|
tf_changed |= curr;
|
|
}
|
|
else
|
|
tf_res[i] = curr;
|
|
logp = isTransient ? 4 : 5;
|
|
}
|
|
/* Only code tf_select if it would actually make a difference. */
|
|
if (tf_select_rsv &&
|
|
tf_select_table[LM][4*isTransient+0+tf_changed]!=
|
|
tf_select_table[LM][4*isTransient+2+tf_changed])
|
|
ec_enc_bit_logp(enc, tf_select, 1);
|
|
else
|
|
tf_select = 0;
|
|
for (i=start;i<end;i++)
|
|
tf_res[i] = tf_select_table[LM][4*isTransient+2*tf_select+tf_res[i]];
|
|
/*for(i=0;i<end;i++)printf("%d ", isTransient ? tf_res[i] : LM+tf_res[i]);printf("\n");*/
|
|
}
|
|
|
|
|
|
static int alloc_trim_analysis(const CELTMode *m, const celt_norm *X,
|
|
const opus_val16 *bandLogE, int end, int LM, int C, int N0,
|
|
AnalysisInfo *analysis, opus_val16 *stereo_saving, opus_val16 tf_estimate,
|
|
int intensity, opus_val16 surround_trim, int arch)
|
|
{
|
|
int i;
|
|
opus_val32 diff=0;
|
|
int c;
|
|
int trim_index;
|
|
opus_val16 trim = QCONST16(5.f, 8);
|
|
opus_val16 logXC, logXC2;
|
|
if (C==2)
|
|
{
|
|
opus_val16 sum = 0; /* Q10 */
|
|
opus_val16 minXC; /* Q10 */
|
|
/* Compute inter-channel correlation for low frequencies */
|
|
for (i=0;i<8;i++)
|
|
{
|
|
opus_val32 partial;
|
|
partial = celt_inner_prod(&X[m->eBands[i]<<LM], &X[N0+(m->eBands[i]<<LM)],
|
|
(m->eBands[i+1]-m->eBands[i])<<LM, arch);
|
|
sum = ADD16(sum, EXTRACT16(SHR32(partial, 18)));
|
|
}
|
|
sum = MULT16_16_Q15(QCONST16(1.f/8, 15), sum);
|
|
sum = MIN16(QCONST16(1.f, 10), ABS16(sum));
|
|
minXC = sum;
|
|
for (i=8;i<intensity;i++)
|
|
{
|
|
opus_val32 partial;
|
|
partial = celt_inner_prod(&X[m->eBands[i]<<LM], &X[N0+(m->eBands[i]<<LM)],
|
|
(m->eBands[i+1]-m->eBands[i])<<LM, arch);
|
|
minXC = MIN16(minXC, ABS16(EXTRACT16(SHR32(partial, 18))));
|
|
}
|
|
minXC = MIN16(QCONST16(1.f, 10), ABS16(minXC));
|
|
/*printf ("%f\n", sum);*/
|
|
/* mid-side savings estimations based on the LF average*/
|
|
logXC = celt_log2(QCONST32(1.001f, 20)-MULT16_16(sum, sum));
|
|
/* mid-side savings estimations based on min correlation */
|
|
logXC2 = MAX16(HALF16(logXC), celt_log2(QCONST32(1.001f, 20)-MULT16_16(minXC, minXC)));
|
|
#ifdef FIXED_POINT
|
|
/* Compensate for Q20 vs Q14 input and convert output to Q8 */
|
|
logXC = PSHR32(logXC-QCONST16(6.f, DB_SHIFT),DB_SHIFT-8);
|
|
logXC2 = PSHR32(logXC2-QCONST16(6.f, DB_SHIFT),DB_SHIFT-8);
|
|
#endif
|
|
|
|
trim += MAX16(-QCONST16(4.f, 8), MULT16_16_Q15(QCONST16(.75f,15),logXC));
|
|
*stereo_saving = MIN16(*stereo_saving + QCONST16(0.25f, 8), -HALF16(logXC2));
|
|
}
|
|
|
|
/* Estimate spectral tilt */
|
|
c=0; do {
|
|
for (i=0;i<end-1;i++)
|
|
{
|
|
diff += bandLogE[i+c*m->nbEBands]*(opus_int32)(2+2*i-end);
|
|
}
|
|
} while (++c<C);
|
|
diff /= C*(end-1);
|
|
/*printf("%f\n", diff);*/
|
|
trim -= MAX16(-QCONST16(2.f, 8), MIN16(QCONST16(2.f, 8), SHR16(diff+QCONST16(1.f, DB_SHIFT),DB_SHIFT-8)/6 ));
|
|
trim -= SHR16(surround_trim, DB_SHIFT-8);
|
|
trim -= 2*SHR16(tf_estimate, 14-8);
|
|
#ifndef DISABLE_FLOAT_API
|
|
if (analysis->valid)
|
|
{
|
|
trim -= MAX16(-QCONST16(2.f, 8), MIN16(QCONST16(2.f, 8),
|
|
(opus_val16)(QCONST16(2.f, 8)*(analysis->tonality_slope+.05f))));
|
|
}
|
|
#else
|
|
(void)analysis;
|
|
#endif
|
|
|
|
#ifdef FIXED_POINT
|
|
trim_index = PSHR32(trim, 8);
|
|
#else
|
|
trim_index = (int)floor(.5f+trim);
|
|
#endif
|
|
trim_index = IMAX(0, IMIN(10, trim_index));
|
|
/*printf("%d\n", trim_index);*/
|
|
#ifdef FUZZING
|
|
trim_index = rand()%11;
|
|
#endif
|
|
return trim_index;
|
|
}
|
|
|
|
static int stereo_analysis(const CELTMode *m, const celt_norm *X,
|
|
int LM, int N0)
|
|
{
|
|
int i;
|
|
int thetas;
|
|
opus_val32 sumLR = EPSILON, sumMS = EPSILON;
|
|
|
|
/* Use the L1 norm to model the entropy of the L/R signal vs the M/S signal */
|
|
for (i=0;i<13;i++)
|
|
{
|
|
int j;
|
|
for (j=m->eBands[i]<<LM;j<m->eBands[i+1]<<LM;j++)
|
|
{
|
|
opus_val32 L, R, M, S;
|
|
/* We cast to 32-bit first because of the -32768 case */
|
|
L = EXTEND32(X[j]);
|
|
R = EXTEND32(X[N0+j]);
|
|
M = ADD32(L, R);
|
|
S = SUB32(L, R);
|
|
sumLR = ADD32(sumLR, ADD32(ABS32(L), ABS32(R)));
|
|
sumMS = ADD32(sumMS, ADD32(ABS32(M), ABS32(S)));
|
|
}
|
|
}
|
|
sumMS = MULT16_32_Q15(QCONST16(0.707107f, 15), sumMS);
|
|
thetas = 13;
|
|
/* We don't need thetas for lower bands with LM<=1 */
|
|
if (LM<=1)
|
|
thetas -= 8;
|
|
return MULT16_32_Q15((m->eBands[13]<<(LM+1))+thetas, sumMS)
|
|
> MULT16_32_Q15(m->eBands[13]<<(LM+1), sumLR);
|
|
}
|
|
|
|
#define MSWAP(a,b) do {opus_val16 tmp = a;a=b;b=tmp;} while(0)
|
|
static opus_val16 median_of_5(const opus_val16 *x)
|
|
{
|
|
opus_val16 t0, t1, t2, t3, t4;
|
|
t2 = x[2];
|
|
if (x[0] > x[1])
|
|
{
|
|
t0 = x[1];
|
|
t1 = x[0];
|
|
} else {
|
|
t0 = x[0];
|
|
t1 = x[1];
|
|
}
|
|
if (x[3] > x[4])
|
|
{
|
|
t3 = x[4];
|
|
t4 = x[3];
|
|
} else {
|
|
t3 = x[3];
|
|
t4 = x[4];
|
|
}
|
|
if (t0 > t3)
|
|
{
|
|
MSWAP(t0, t3);
|
|
MSWAP(t1, t4);
|
|
}
|
|
if (t2 > t1)
|
|
{
|
|
if (t1 < t3)
|
|
return MIN16(t2, t3);
|
|
else
|
|
return MIN16(t4, t1);
|
|
} else {
|
|
if (t2 < t3)
|
|
return MIN16(t1, t3);
|
|
else
|
|
return MIN16(t2, t4);
|
|
}
|
|
}
|
|
|
|
static opus_val16 median_of_3(const opus_val16 *x)
|
|
{
|
|
opus_val16 t0, t1, t2;
|
|
if (x[0] > x[1])
|
|
{
|
|
t0 = x[1];
|
|
t1 = x[0];
|
|
} else {
|
|
t0 = x[0];
|
|
t1 = x[1];
|
|
}
|
|
t2 = x[2];
|
|
if (t1 < t2)
|
|
return t1;
|
|
else if (t0 < t2)
|
|
return t2;
|
|
else
|
|
return t0;
|
|
}
|
|
|
|
static opus_val16 dynalloc_analysis(const opus_val16 *bandLogE, const opus_val16 *bandLogE2,
|
|
int nbEBands, int start, int end, int C, int *offsets, int lsb_depth, const opus_int16 *logN,
|
|
int isTransient, int vbr, int constrained_vbr, const opus_int16 *eBands, int LM,
|
|
int effectiveBytes, opus_int32 *tot_boost_, int lfe, opus_val16 *surround_dynalloc)
|
|
{
|
|
int i, c;
|
|
opus_int32 tot_boost=0;
|
|
opus_val16 maxDepth;
|
|
VARDECL(opus_val16, follower);
|
|
VARDECL(opus_val16, noise_floor);
|
|
SAVE_STACK;
|
|
ALLOC(follower, C*nbEBands, opus_val16);
|
|
ALLOC(noise_floor, C*nbEBands, opus_val16);
|
|
OPUS_CLEAR(offsets, nbEBands);
|
|
/* Dynamic allocation code */
|
|
maxDepth=-QCONST16(31.9f, DB_SHIFT);
|
|
for (i=0;i<end;i++)
|
|
{
|
|
/* Noise floor must take into account eMeans, the depth, the width of the bands
|
|
and the preemphasis filter (approx. square of bark band ID) */
|
|
noise_floor[i] = MULT16_16(QCONST16(0.0625f, DB_SHIFT),logN[i])
|
|
+QCONST16(.5f,DB_SHIFT)+SHL16(9-lsb_depth,DB_SHIFT)-SHL16(eMeans[i],6)
|
|
+MULT16_16(QCONST16(.0062,DB_SHIFT),(i+5)*(i+5));
|
|
}
|
|
c=0;do
|
|
{
|
|
for (i=0;i<end;i++)
|
|
maxDepth = MAX16(maxDepth, bandLogE[c*nbEBands+i]-noise_floor[i]);
|
|
} while (++c<C);
|
|
/* Make sure that dynamic allocation can't make us bust the budget */
|
|
if (effectiveBytes > 50 && LM>=1 && !lfe)
|
|
{
|
|
int last=0;
|
|
c=0;do
|
|
{
|
|
opus_val16 offset;
|
|
opus_val16 tmp;
|
|
opus_val16 *f;
|
|
f = &follower[c*nbEBands];
|
|
f[0] = bandLogE2[c*nbEBands];
|
|
for (i=1;i<end;i++)
|
|
{
|
|
/* The last band to be at least 3 dB higher than the previous one
|
|
is the last we'll consider. Otherwise, we run into problems on
|
|
bandlimited signals. */
|
|
if (bandLogE2[c*nbEBands+i] > bandLogE2[c*nbEBands+i-1]+QCONST16(.5f,DB_SHIFT))
|
|
last=i;
|
|
f[i] = MIN16(f[i-1]+QCONST16(1.5f,DB_SHIFT), bandLogE2[c*nbEBands+i]);
|
|
}
|
|
for (i=last-1;i>=0;i--)
|
|
f[i] = MIN16(f[i], MIN16(f[i+1]+QCONST16(2.f,DB_SHIFT), bandLogE2[c*nbEBands+i]));
|
|
|
|
/* Combine with a median filter to avoid dynalloc triggering unnecessarily.
|
|
The "offset" value controls how conservative we are -- a higher offset
|
|
reduces the impact of the median filter and makes dynalloc use more bits. */
|
|
offset = QCONST16(1.f, DB_SHIFT);
|
|
for (i=2;i<end-2;i++)
|
|
f[i] = MAX16(f[i], median_of_5(&bandLogE2[c*nbEBands+i-2])-offset);
|
|
tmp = median_of_3(&bandLogE2[c*nbEBands])-offset;
|
|
f[0] = MAX16(f[0], tmp);
|
|
f[1] = MAX16(f[1], tmp);
|
|
tmp = median_of_3(&bandLogE2[c*nbEBands+end-3])-offset;
|
|
f[end-2] = MAX16(f[end-2], tmp);
|
|
f[end-1] = MAX16(f[end-1], tmp);
|
|
|
|
for (i=0;i<end;i++)
|
|
f[i] = MAX16(f[i], noise_floor[i]);
|
|
} while (++c<C);
|
|
if (C==2)
|
|
{
|
|
for (i=start;i<end;i++)
|
|
{
|
|
/* Consider 24 dB "cross-talk" */
|
|
follower[nbEBands+i] = MAX16(follower[nbEBands+i], follower[ i]-QCONST16(4.f,DB_SHIFT));
|
|
follower[ i] = MAX16(follower[ i], follower[nbEBands+i]-QCONST16(4.f,DB_SHIFT));
|
|
follower[i] = HALF16(MAX16(0, bandLogE[i]-follower[i]) + MAX16(0, bandLogE[nbEBands+i]-follower[nbEBands+i]));
|
|
}
|
|
} else {
|
|
for (i=start;i<end;i++)
|
|
{
|
|
follower[i] = MAX16(0, bandLogE[i]-follower[i]);
|
|
}
|
|
}
|
|
for (i=start;i<end;i++)
|
|
follower[i] = MAX16(follower[i], surround_dynalloc[i]);
|
|
/* For non-transient CBR/CVBR frames, halve the dynalloc contribution */
|
|
if ((!vbr || constrained_vbr)&&!isTransient)
|
|
{
|
|
for (i=start;i<end;i++)
|
|
follower[i] = HALF16(follower[i]);
|
|
}
|
|
for (i=start;i<end;i++)
|
|
{
|
|
int width;
|
|
int boost;
|
|
int boost_bits;
|
|
|
|
if (i<8)
|
|
follower[i] *= 2;
|
|
if (i>=12)
|
|
follower[i] = HALF16(follower[i]);
|
|
follower[i] = MIN16(follower[i], QCONST16(4, DB_SHIFT));
|
|
|
|
width = C*(eBands[i+1]-eBands[i])<<LM;
|
|
if (width<6)
|
|
{
|
|
boost = (int)SHR32(EXTEND32(follower[i]),DB_SHIFT);
|
|
boost_bits = boost*width<<BITRES;
|
|
} else if (width > 48) {
|
|
boost = (int)SHR32(EXTEND32(follower[i])*8,DB_SHIFT);
|
|
boost_bits = (boost*width<<BITRES)/8;
|
|
} else {
|
|
boost = (int)SHR32(EXTEND32(follower[i])*width/6,DB_SHIFT);
|
|
boost_bits = boost*6<<BITRES;
|
|
}
|
|
/* For CBR and non-transient CVBR frames, limit dynalloc to 1/4 of the bits */
|
|
if ((!vbr || (constrained_vbr&&!isTransient))
|
|
&& (tot_boost+boost_bits)>>BITRES>>3 > effectiveBytes/4)
|
|
{
|
|
opus_int32 cap = ((effectiveBytes/4)<<BITRES<<3);
|
|
offsets[i] = cap-tot_boost;
|
|
tot_boost = cap;
|
|
break;
|
|
} else {
|
|
offsets[i] = boost;
|
|
tot_boost += boost_bits;
|
|
}
|
|
}
|
|
}
|
|
*tot_boost_ = tot_boost;
|
|
RESTORE_STACK;
|
|
return maxDepth;
|
|
}
|
|
|
|
|
|
static int run_prefilter(CELTEncoder *st, celt_sig *in, celt_sig *prefilter_mem, int CC, int N,
|
|
int prefilter_tapset, int *pitch, opus_val16 *gain, int *qgain, int enabled, int nbAvailableBytes)
|
|
{
|
|
int c;
|
|
VARDECL(celt_sig, _pre);
|
|
celt_sig *pre[2];
|
|
const CELTMode *mode;
|
|
int pitch_index;
|
|
opus_val16 gain1;
|
|
opus_val16 pf_threshold;
|
|
int pf_on;
|
|
int qg;
|
|
int overlap;
|
|
SAVE_STACK;
|
|
|
|
mode = st->mode;
|
|
overlap = mode->overlap;
|
|
ALLOC(_pre, CC*(N+COMBFILTER_MAXPERIOD), celt_sig);
|
|
|
|
pre[0] = _pre;
|
|
pre[1] = _pre + (N+COMBFILTER_MAXPERIOD);
|
|
|
|
|
|
c=0; do {
|
|
OPUS_COPY(pre[c], prefilter_mem+c*COMBFILTER_MAXPERIOD, COMBFILTER_MAXPERIOD);
|
|
OPUS_COPY(pre[c]+COMBFILTER_MAXPERIOD, in+c*(N+overlap)+overlap, N);
|
|
} while (++c<CC);
|
|
|
|
if (enabled)
|
|
{
|
|
VARDECL(opus_val16, pitch_buf);
|
|
ALLOC(pitch_buf, (COMBFILTER_MAXPERIOD+N)>>1, opus_val16);
|
|
|
|
pitch_downsample(pre, pitch_buf, COMBFILTER_MAXPERIOD+N, CC, st->arch);
|
|
/* Don't search for the fir last 1.5 octave of the range because
|
|
there's too many false-positives due to short-term correlation */
|
|
pitch_search(pitch_buf+(COMBFILTER_MAXPERIOD>>1), pitch_buf, N,
|
|
COMBFILTER_MAXPERIOD-3*COMBFILTER_MINPERIOD, &pitch_index,
|
|
st->arch);
|
|
pitch_index = COMBFILTER_MAXPERIOD-pitch_index;
|
|
|
|
gain1 = remove_doubling(pitch_buf, COMBFILTER_MAXPERIOD, COMBFILTER_MINPERIOD,
|
|
N, &pitch_index, st->prefilter_period, st->prefilter_gain, st->arch);
|
|
if (pitch_index > COMBFILTER_MAXPERIOD-2)
|
|
pitch_index = COMBFILTER_MAXPERIOD-2;
|
|
gain1 = MULT16_16_Q15(QCONST16(.7f,15),gain1);
|
|
/*printf("%d %d %f %f\n", pitch_change, pitch_index, gain1, st->analysis.tonality);*/
|
|
if (st->loss_rate>2)
|
|
gain1 = HALF32(gain1);
|
|
if (st->loss_rate>4)
|
|
gain1 = HALF32(gain1);
|
|
if (st->loss_rate>8)
|
|
gain1 = 0;
|
|
} else {
|
|
gain1 = 0;
|
|
pitch_index = COMBFILTER_MINPERIOD;
|
|
}
|
|
|
|
/* Gain threshold for enabling the prefilter/postfilter */
|
|
pf_threshold = QCONST16(.2f,15);
|
|
|
|
/* Adjusting the threshold based on rate and continuity */
|
|
if (abs(pitch_index-st->prefilter_period)*10>pitch_index)
|
|
pf_threshold += QCONST16(.2f,15);
|
|
if (nbAvailableBytes<25)
|
|
pf_threshold += QCONST16(.1f,15);
|
|
if (nbAvailableBytes<35)
|
|
pf_threshold += QCONST16(.1f,15);
|
|
if (st->prefilter_gain > QCONST16(.4f,15))
|
|
pf_threshold -= QCONST16(.1f,15);
|
|
if (st->prefilter_gain > QCONST16(.55f,15))
|
|
pf_threshold -= QCONST16(.1f,15);
|
|
|
|
/* Hard threshold at 0.2 */
|
|
pf_threshold = MAX16(pf_threshold, QCONST16(.2f,15));
|
|
if (gain1<pf_threshold)
|
|
{
|
|
gain1 = 0;
|
|
pf_on = 0;
|
|
qg = 0;
|
|
} else {
|
|
/*This block is not gated by a total bits check only because
|
|
of the nbAvailableBytes check above.*/
|
|
if (ABS16(gain1-st->prefilter_gain)<QCONST16(.1f,15))
|
|
gain1=st->prefilter_gain;
|
|
|
|
#ifdef FIXED_POINT
|
|
qg = ((gain1+1536)>>10)/3-1;
|
|
#else
|
|
qg = (int)floor(.5f+gain1*32/3)-1;
|
|
#endif
|
|
qg = IMAX(0, IMIN(7, qg));
|
|
gain1 = QCONST16(0.09375f,15)*(qg+1);
|
|
pf_on = 1;
|
|
}
|
|
/*printf("%d %f\n", pitch_index, gain1);*/
|
|
|
|
c=0; do {
|
|
int offset = mode->shortMdctSize-overlap;
|
|
st->prefilter_period=IMAX(st->prefilter_period, COMBFILTER_MINPERIOD);
|
|
OPUS_COPY(in+c*(N+overlap), st->in_mem+c*(overlap), overlap);
|
|
if (offset)
|
|
comb_filter(in+c*(N+overlap)+overlap, pre[c]+COMBFILTER_MAXPERIOD,
|
|
st->prefilter_period, st->prefilter_period, offset, -st->prefilter_gain, -st->prefilter_gain,
|
|
st->prefilter_tapset, st->prefilter_tapset, NULL, 0, st->arch);
|
|
|
|
comb_filter(in+c*(N+overlap)+overlap+offset, pre[c]+COMBFILTER_MAXPERIOD+offset,
|
|
st->prefilter_period, pitch_index, N-offset, -st->prefilter_gain, -gain1,
|
|
st->prefilter_tapset, prefilter_tapset, mode->window, overlap, st->arch);
|
|
OPUS_COPY(st->in_mem+c*(overlap), in+c*(N+overlap)+N, overlap);
|
|
|
|
if (N>COMBFILTER_MAXPERIOD)
|
|
{
|
|
OPUS_COPY(prefilter_mem+c*COMBFILTER_MAXPERIOD, pre[c]+N, COMBFILTER_MAXPERIOD);
|
|
} else {
|
|
OPUS_MOVE(prefilter_mem+c*COMBFILTER_MAXPERIOD, prefilter_mem+c*COMBFILTER_MAXPERIOD+N, COMBFILTER_MAXPERIOD-N);
|
|
OPUS_COPY(prefilter_mem+c*COMBFILTER_MAXPERIOD+COMBFILTER_MAXPERIOD-N, pre[c]+COMBFILTER_MAXPERIOD, N);
|
|
}
|
|
} while (++c<CC);
|
|
|
|
RESTORE_STACK;
|
|
*gain = gain1;
|
|
*pitch = pitch_index;
|
|
*qgain = qg;
|
|
return pf_on;
|
|
}
|
|
|
|
static int compute_vbr(const CELTMode *mode, AnalysisInfo *analysis, opus_int32 base_target,
|
|
int LM, opus_int32 bitrate, int lastCodedBands, int C, int intensity,
|
|
int constrained_vbr, opus_val16 stereo_saving, int tot_boost,
|
|
opus_val16 tf_estimate, int pitch_change, opus_val16 maxDepth,
|
|
int variable_duration, int lfe, int has_surround_mask, opus_val16 surround_masking,
|
|
opus_val16 temporal_vbr)
|
|
{
|
|
/* The target rate in 8th bits per frame */
|
|
opus_int32 target;
|
|
int coded_bins;
|
|
int coded_bands;
|
|
opus_val16 tf_calibration;
|
|
int nbEBands;
|
|
const opus_int16 *eBands;
|
|
|
|
nbEBands = mode->nbEBands;
|
|
eBands = mode->eBands;
|
|
|
|
coded_bands = lastCodedBands ? lastCodedBands : nbEBands;
|
|
coded_bins = eBands[coded_bands]<<LM;
|
|
if (C==2)
|
|
coded_bins += eBands[IMIN(intensity, coded_bands)]<<LM;
|
|
|
|
target = base_target;
|
|
|
|
/*printf("%f %f %f %f %d %d ", st->analysis.activity, st->analysis.tonality, tf_estimate, st->stereo_saving, tot_boost, coded_bands);*/
|
|
#ifndef DISABLE_FLOAT_API
|
|
if (analysis->valid && analysis->activity<.4)
|
|
target -= (opus_int32)((coded_bins<<BITRES)*(.4f-analysis->activity));
|
|
#endif
|
|
/* Stereo savings */
|
|
if (C==2)
|
|
{
|
|
int coded_stereo_bands;
|
|
int coded_stereo_dof;
|
|
opus_val16 max_frac;
|
|
coded_stereo_bands = IMIN(intensity, coded_bands);
|
|
coded_stereo_dof = (eBands[coded_stereo_bands]<<LM)-coded_stereo_bands;
|
|
/* Maximum fraction of the bits we can save if the signal is mono. */
|
|
max_frac = DIV32_16(MULT16_16(QCONST16(0.8f, 15), coded_stereo_dof), coded_bins);
|
|
stereo_saving = MIN16(stereo_saving, QCONST16(1.f, 8));
|
|
/*printf("%d %d %d ", coded_stereo_dof, coded_bins, tot_boost);*/
|
|
target -= (opus_int32)MIN32(MULT16_32_Q15(max_frac,target),
|
|
SHR32(MULT16_16(stereo_saving-QCONST16(0.1f,8),(coded_stereo_dof<<BITRES)),8));
|
|
}
|
|
/* Boost the rate according to dynalloc (minus the dynalloc average for calibration). */
|
|
target += tot_boost-(16<<LM);
|
|
/* Apply transient boost, compensating for average boost. */
|
|
tf_calibration = variable_duration==OPUS_FRAMESIZE_VARIABLE ?
|
|
QCONST16(0.02f,14) : QCONST16(0.04f,14);
|
|
target += (opus_int32)SHL32(MULT16_32_Q15(tf_estimate-tf_calibration, target),1);
|
|
|
|
#ifndef DISABLE_FLOAT_API
|
|
/* Apply tonality boost */
|
|
if (analysis->valid && !lfe)
|
|
{
|
|
opus_int32 tonal_target;
|
|
float tonal;
|
|
|
|
/* Tonality boost (compensating for the average). */
|
|
tonal = MAX16(0.f,analysis->tonality-.15f)-0.09f;
|
|
tonal_target = target + (opus_int32)((coded_bins<<BITRES)*1.2f*tonal);
|
|
if (pitch_change)
|
|
tonal_target += (opus_int32)((coded_bins<<BITRES)*.8f);
|
|
/*printf("%f %f ", analysis->tonality, tonal);*/
|
|
target = tonal_target;
|
|
}
|
|
#else
|
|
(void)analysis;
|
|
(void)pitch_change;
|
|
#endif
|
|
|
|
if (has_surround_mask&&!lfe)
|
|
{
|
|
opus_int32 surround_target = target + (opus_int32)SHR32(MULT16_16(surround_masking,coded_bins<<BITRES), DB_SHIFT);
|
|
/*printf("%f %d %d %d %d %d %d ", surround_masking, coded_bins, st->end, st->intensity, surround_target, target, st->bitrate);*/
|
|
target = IMAX(target/4, surround_target);
|
|
}
|
|
|
|
{
|
|
opus_int32 floor_depth;
|
|
int bins;
|
|
bins = eBands[nbEBands-2]<<LM;
|
|
/*floor_depth = SHR32(MULT16_16((C*bins<<BITRES),celt_log2(SHL32(MAX16(1,sample_max),13))), DB_SHIFT);*/
|
|
floor_depth = (opus_int32)SHR32(MULT16_16((C*bins<<BITRES),maxDepth), DB_SHIFT);
|
|
floor_depth = IMAX(floor_depth, target>>2);
|
|
target = IMIN(target, floor_depth);
|
|
/*printf("%f %d\n", maxDepth, floor_depth);*/
|
|
}
|
|
|
|
if ((!has_surround_mask||lfe) && (constrained_vbr || bitrate<64000))
|
|
{
|
|
opus_val16 rate_factor = Q15ONE;
|
|
if (bitrate < 64000)
|
|
{
|
|
#ifdef FIXED_POINT
|
|
rate_factor = MAX16(0,(bitrate-32000));
|
|
#else
|
|
rate_factor = MAX16(0,(1.f/32768)*(bitrate-32000));
|
|
#endif
|
|
}
|
|
if (constrained_vbr)
|
|
rate_factor = MIN16(rate_factor, QCONST16(0.67f, 15));
|
|
target = base_target + (opus_int32)MULT16_32_Q15(rate_factor, target-base_target);
|
|
|
|
}
|
|
|
|
if (!has_surround_mask && tf_estimate < QCONST16(.2f, 14))
|
|
{
|
|
opus_val16 amount;
|
|
opus_val16 tvbr_factor;
|
|
amount = MULT16_16_Q15(QCONST16(.0000031f, 30), IMAX(0, IMIN(32000, 96000-bitrate)));
|
|
tvbr_factor = SHR32(MULT16_16(temporal_vbr, amount), DB_SHIFT);
|
|
target += (opus_int32)MULT16_32_Q15(tvbr_factor, target);
|
|
}
|
|
|
|
/* Don't allow more than doubling the rate */
|
|
target = IMIN(2*base_target, target);
|
|
|
|
return target;
|
|
}
|
|
|
|
int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc)
|
|
{
|
|
int i, c, N;
|
|
opus_int32 bits;
|
|
ec_enc _enc;
|
|
VARDECL(celt_sig, in);
|
|
VARDECL(celt_sig, freq);
|
|
VARDECL(celt_norm, X);
|
|
VARDECL(celt_ener, bandE);
|
|
VARDECL(opus_val16, bandLogE);
|
|
VARDECL(opus_val16, bandLogE2);
|
|
VARDECL(int, fine_quant);
|
|
VARDECL(opus_val16, error);
|
|
VARDECL(int, pulses);
|
|
VARDECL(int, cap);
|
|
VARDECL(int, offsets);
|
|
VARDECL(int, fine_priority);
|
|
VARDECL(int, tf_res);
|
|
VARDECL(unsigned char, collapse_masks);
|
|
celt_sig *prefilter_mem;
|
|
opus_val16 *oldBandE, *oldLogE, *oldLogE2;
|
|
int shortBlocks=0;
|
|
int isTransient=0;
|
|
const int CC = st->channels;
|
|
const int C = st->stream_channels;
|
|
int LM, M;
|
|
int tf_select;
|
|
int nbFilledBytes, nbAvailableBytes;
|
|
int start;
|
|
int end;
|
|
int effEnd;
|
|
int codedBands;
|
|
int tf_sum;
|
|
int alloc_trim;
|
|
int pitch_index=COMBFILTER_MINPERIOD;
|
|
opus_val16 gain1 = 0;
|
|
int dual_stereo=0;
|
|
int effectiveBytes;
|
|
int dynalloc_logp;
|
|
opus_int32 vbr_rate;
|
|
opus_int32 total_bits;
|
|
opus_int32 total_boost;
|
|
opus_int32 balance;
|
|
opus_int32 tell;
|
|
int prefilter_tapset=0;
|
|
int pf_on;
|
|
int anti_collapse_rsv;
|
|
int anti_collapse_on=0;
|
|
int silence=0;
|
|
int tf_chan = 0;
|
|
opus_val16 tf_estimate;
|
|
int pitch_change=0;
|
|
opus_int32 tot_boost;
|
|
opus_val32 sample_max;
|
|
opus_val16 maxDepth;
|
|
const OpusCustomMode *mode;
|
|
int nbEBands;
|
|
int overlap;
|
|
const opus_int16 *eBands;
|
|
int secondMdct;
|
|
int signalBandwidth;
|
|
int transient_got_disabled=0;
|
|
opus_val16 surround_masking=0;
|
|
opus_val16 temporal_vbr=0;
|
|
opus_val16 surround_trim = 0;
|
|
opus_int32 equiv_rate = 510000;
|
|
VARDECL(opus_val16, surround_dynalloc);
|
|
ALLOC_STACK;
|
|
|
|
mode = st->mode;
|
|
nbEBands = mode->nbEBands;
|
|
overlap = mode->overlap;
|
|
eBands = mode->eBands;
|
|
start = st->start;
|
|
end = st->end;
|
|
tf_estimate = 0;
|
|
if (nbCompressedBytes<2 || pcm==NULL)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_BAD_ARG;
|
|
}
|
|
|
|
frame_size *= st->upsample;
|
|
for (LM=0;LM<=mode->maxLM;LM++)
|
|
if (mode->shortMdctSize<<LM==frame_size)
|
|
break;
|
|
if (LM>mode->maxLM)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_BAD_ARG;
|
|
}
|
|
M=1<<LM;
|
|
N = M*mode->shortMdctSize;
|
|
|
|
prefilter_mem = st->in_mem+CC*(overlap);
|
|
oldBandE = (opus_val16*)(st->in_mem+CC*(overlap+COMBFILTER_MAXPERIOD));
|
|
oldLogE = oldBandE + CC*nbEBands;
|
|
oldLogE2 = oldLogE + CC*nbEBands;
|
|
|
|
if (enc==NULL)
|
|
{
|
|
tell=1;
|
|
nbFilledBytes=0;
|
|
} else {
|
|
tell=ec_tell(enc);
|
|
nbFilledBytes=(tell+4)>>3;
|
|
}
|
|
|
|
#ifdef CUSTOM_MODES
|
|
if (st->signalling && enc==NULL)
|
|
{
|
|
int tmp = (mode->effEBands-end)>>1;
|
|
end = st->end = IMAX(1, mode->effEBands-tmp);
|
|
compressed[0] = tmp<<5;
|
|
compressed[0] |= LM<<3;
|
|
compressed[0] |= (C==2)<<2;
|
|
/* Convert "standard mode" to Opus header */
|
|
if (mode->Fs==48000 && mode->shortMdctSize==120)
|
|
{
|
|
int c0 = toOpus(compressed[0]);
|
|
if (c0<0)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_BAD_ARG;
|
|
}
|
|
compressed[0] = c0;
|
|
}
|
|
compressed++;
|
|
nbCompressedBytes--;
|
|
}
|
|
#else
|
|
celt_assert(st->signalling==0);
|
|
#endif
|
|
|
|
/* Can't produce more than 1275 output bytes */
|
|
nbCompressedBytes = IMIN(nbCompressedBytes,1275);
|
|
nbAvailableBytes = nbCompressedBytes - nbFilledBytes;
|
|
|
|
if (st->vbr && st->bitrate!=OPUS_BITRATE_MAX)
|
|
{
|
|
opus_int32 den=mode->Fs>>BITRES;
|
|
vbr_rate=(st->bitrate*frame_size+(den>>1))/den;
|
|
#ifdef CUSTOM_MODES
|
|
if (st->signalling)
|
|
vbr_rate -= 8<<BITRES;
|
|
#endif
|
|
effectiveBytes = vbr_rate>>(3+BITRES);
|
|
} else {
|
|
opus_int32 tmp;
|
|
vbr_rate = 0;
|
|
tmp = st->bitrate*frame_size;
|
|
if (tell>1)
|
|
tmp += tell;
|
|
if (st->bitrate!=OPUS_BITRATE_MAX)
|
|
nbCompressedBytes = IMAX(2, IMIN(nbCompressedBytes,
|
|
(tmp+4*mode->Fs)/(8*mode->Fs)-!!st->signalling));
|
|
effectiveBytes = nbCompressedBytes;
|
|
}
|
|
if (st->bitrate != OPUS_BITRATE_MAX)
|
|
equiv_rate = st->bitrate - (40*C+20)*((400>>LM) - 50);
|
|
|
|
if (enc==NULL)
|
|
{
|
|
ec_enc_init(&_enc, compressed, nbCompressedBytes);
|
|
enc = &_enc;
|
|
}
|
|
|
|
if (vbr_rate>0)
|
|
{
|
|
/* Computes the max bit-rate allowed in VBR mode to avoid violating the
|
|
target rate and buffering.
|
|
We must do this up front so that bust-prevention logic triggers
|
|
correctly if we don't have enough bits. */
|
|
if (st->constrained_vbr)
|
|
{
|
|
opus_int32 vbr_bound;
|
|
opus_int32 max_allowed;
|
|
/* We could use any multiple of vbr_rate as bound (depending on the
|
|
delay).
|
|
This is clamped to ensure we use at least two bytes if the encoder
|
|
was entirely empty, but to allow 0 in hybrid mode. */
|
|
vbr_bound = vbr_rate;
|
|
max_allowed = IMIN(IMAX(tell==1?2:0,
|
|
(vbr_rate+vbr_bound-st->vbr_reservoir)>>(BITRES+3)),
|
|
nbAvailableBytes);
|
|
if(max_allowed < nbAvailableBytes)
|
|
{
|
|
nbCompressedBytes = nbFilledBytes+max_allowed;
|
|
nbAvailableBytes = max_allowed;
|
|
ec_enc_shrink(enc, nbCompressedBytes);
|
|
}
|
|
}
|
|
}
|
|
total_bits = nbCompressedBytes*8;
|
|
|
|
effEnd = end;
|
|
if (effEnd > mode->effEBands)
|
|
effEnd = mode->effEBands;
|
|
|
|
ALLOC(in, CC*(N+overlap), celt_sig);
|
|
|
|
sample_max=MAX32(st->overlap_max, celt_maxabs16(pcm, C*(N-overlap)/st->upsample));
|
|
st->overlap_max=celt_maxabs16(pcm+C*(N-overlap)/st->upsample, C*overlap/st->upsample);
|
|
sample_max=MAX32(sample_max, st->overlap_max);
|
|
#ifdef FIXED_POINT
|
|
silence = (sample_max==0);
|
|
#else
|
|
silence = (sample_max <= (opus_val16)1/(1<<st->lsb_depth));
|
|
#endif
|
|
#ifdef FUZZING
|
|
if ((rand()&0x3F)==0)
|
|
silence = 1;
|
|
#endif
|
|
if (tell==1)
|
|
ec_enc_bit_logp(enc, silence, 15);
|
|
else
|
|
silence=0;
|
|
if (silence)
|
|
{
|
|
/*In VBR mode there is no need to send more than the minimum. */
|
|
if (vbr_rate>0)
|
|
{
|
|
effectiveBytes=nbCompressedBytes=IMIN(nbCompressedBytes, nbFilledBytes+2);
|
|
total_bits=nbCompressedBytes*8;
|
|
nbAvailableBytes=2;
|
|
ec_enc_shrink(enc, nbCompressedBytes);
|
|
}
|
|
/* Pretend we've filled all the remaining bits with zeros
|
|
(that's what the initialiser did anyway) */
|
|
tell = nbCompressedBytes*8;
|
|
enc->nbits_total+=tell-ec_tell(enc);
|
|
}
|
|
c=0; do {
|
|
int need_clip=0;
|
|
#ifndef FIXED_POINT
|
|
need_clip = st->clip && sample_max>65536.f;
|
|
#endif
|
|
celt_preemphasis(pcm+c, in+c*(N+overlap)+overlap, N, CC, st->upsample,
|
|
mode->preemph, st->preemph_memE+c, need_clip);
|
|
} while (++c<CC);
|
|
|
|
|
|
|
|
/* Find pitch period and gain */
|
|
{
|
|
int enabled;
|
|
int qg;
|
|
enabled = ((st->lfe&&nbAvailableBytes>3) || nbAvailableBytes>12*C) && start==0 && !silence && !st->disable_pf
|
|
&& st->complexity >= 5 && !(st->consec_transient && LM!=3 && st->variable_duration==OPUS_FRAMESIZE_VARIABLE);
|
|
|
|
prefilter_tapset = st->tapset_decision;
|
|
pf_on = run_prefilter(st, in, prefilter_mem, CC, N, prefilter_tapset, &pitch_index, &gain1, &qg, enabled, nbAvailableBytes);
|
|
if ((gain1 > QCONST16(.4f,15) || st->prefilter_gain > QCONST16(.4f,15)) && (!st->analysis.valid || st->analysis.tonality > .3)
|
|
&& (pitch_index > 1.26*st->prefilter_period || pitch_index < .79*st->prefilter_period))
|
|
pitch_change = 1;
|
|
if (pf_on==0)
|
|
{
|
|
if(start==0 && tell+16<=total_bits)
|
|
ec_enc_bit_logp(enc, 0, 1);
|
|
} else {
|
|
/*This block is not gated by a total bits check only because
|
|
of the nbAvailableBytes check above.*/
|
|
int octave;
|
|
ec_enc_bit_logp(enc, 1, 1);
|
|
pitch_index += 1;
|
|
octave = EC_ILOG(pitch_index)-5;
|
|
ec_enc_uint(enc, octave, 6);
|
|
ec_enc_bits(enc, pitch_index-(16<<octave), 4+octave);
|
|
pitch_index -= 1;
|
|
ec_enc_bits(enc, qg, 3);
|
|
ec_enc_icdf(enc, prefilter_tapset, tapset_icdf, 2);
|
|
}
|
|
}
|
|
|
|
isTransient = 0;
|
|
shortBlocks = 0;
|
|
if (st->complexity >= 1 && !st->lfe)
|
|
{
|
|
isTransient = transient_analysis(in, N+overlap, CC,
|
|
&tf_estimate, &tf_chan);
|
|
}
|
|
if (LM>0 && ec_tell(enc)+3<=total_bits)
|
|
{
|
|
if (isTransient)
|
|
shortBlocks = M;
|
|
} else {
|
|
isTransient = 0;
|
|
transient_got_disabled=1;
|
|
}
|
|
|
|
ALLOC(freq, CC*N, celt_sig); /**< Interleaved signal MDCTs */
|
|
ALLOC(bandE,nbEBands*CC, celt_ener);
|
|
ALLOC(bandLogE,nbEBands*CC, opus_val16);
|
|
|
|
secondMdct = shortBlocks && st->complexity>=8;
|
|
ALLOC(bandLogE2, C*nbEBands, opus_val16);
|
|
if (secondMdct)
|
|
{
|
|
compute_mdcts(mode, 0, in, freq, C, CC, LM, st->upsample, st->arch);
|
|
compute_band_energies(mode, freq, bandE, effEnd, C, LM);
|
|
amp2Log2(mode, effEnd, end, bandE, bandLogE2, C);
|
|
for (i=0;i<C*nbEBands;i++)
|
|
bandLogE2[i] += HALF16(SHL16(LM, DB_SHIFT));
|
|
}
|
|
|
|
compute_mdcts(mode, shortBlocks, in, freq, C, CC, LM, st->upsample, st->arch);
|
|
if (CC==2&&C==1)
|
|
tf_chan = 0;
|
|
compute_band_energies(mode, freq, bandE, effEnd, C, LM);
|
|
|
|
if (st->lfe)
|
|
{
|
|
for (i=2;i<end;i++)
|
|
{
|
|
bandE[i] = IMIN(bandE[i], MULT16_32_Q15(QCONST16(1e-4f,15),bandE[0]));
|
|
bandE[i] = MAX32(bandE[i], EPSILON);
|
|
}
|
|
}
|
|
amp2Log2(mode, effEnd, end, bandE, bandLogE, C);
|
|
|
|
ALLOC(surround_dynalloc, C*nbEBands, opus_val16);
|
|
OPUS_CLEAR(surround_dynalloc, end);
|
|
/* This computes how much masking takes place between surround channels */
|
|
if (start==0&&st->energy_mask&&!st->lfe)
|
|
{
|
|
int mask_end;
|
|
int midband;
|
|
int count_dynalloc;
|
|
opus_val32 mask_avg=0;
|
|
opus_val32 diff=0;
|
|
int count=0;
|
|
mask_end = IMAX(2,st->lastCodedBands);
|
|
for (c=0;c<C;c++)
|
|
{
|
|
for(i=0;i<mask_end;i++)
|
|
{
|
|
opus_val16 mask;
|
|
mask = MAX16(MIN16(st->energy_mask[nbEBands*c+i],
|
|
QCONST16(.25f, DB_SHIFT)), -QCONST16(2.0f, DB_SHIFT));
|
|
if (mask > 0)
|
|
mask = HALF16(mask);
|
|
mask_avg += MULT16_16(mask, eBands[i+1]-eBands[i]);
|
|
count += eBands[i+1]-eBands[i];
|
|
diff += MULT16_16(mask, 1+2*i-mask_end);
|
|
}
|
|
}
|
|
celt_assert(count>0);
|
|
mask_avg = DIV32_16(mask_avg,count);
|
|
mask_avg += QCONST16(.2f, DB_SHIFT);
|
|
diff = diff*6/(C*(mask_end-1)*(mask_end+1)*mask_end);
|
|
/* Again, being conservative */
|
|
diff = HALF32(diff);
|
|
diff = MAX32(MIN32(diff, QCONST32(.031f, DB_SHIFT)), -QCONST32(.031f, DB_SHIFT));
|
|
/* Find the band that's in the middle of the coded spectrum */
|
|
for (midband=0;eBands[midband+1] < eBands[mask_end]/2;midband++);
|
|
count_dynalloc=0;
|
|
for(i=0;i<mask_end;i++)
|
|
{
|
|
opus_val32 lin;
|
|
opus_val16 unmask;
|
|
lin = mask_avg + diff*(i-midband);
|
|
if (C==2)
|
|
unmask = MAX16(st->energy_mask[i], st->energy_mask[nbEBands+i]);
|
|
else
|
|
unmask = st->energy_mask[i];
|
|
unmask = MIN16(unmask, QCONST16(.0f, DB_SHIFT));
|
|
unmask -= lin;
|
|
if (unmask > QCONST16(.25f, DB_SHIFT))
|
|
{
|
|
surround_dynalloc[i] = unmask - QCONST16(.25f, DB_SHIFT);
|
|
count_dynalloc++;
|
|
}
|
|
}
|
|
if (count_dynalloc>=3)
|
|
{
|
|
/* If we need dynalloc in many bands, it's probably because our
|
|
initial masking rate was too low. */
|
|
mask_avg += QCONST16(.25f, DB_SHIFT);
|
|
if (mask_avg>0)
|
|
{
|
|
/* Something went really wrong in the original calculations,
|
|
disabling masking. */
|
|
mask_avg = 0;
|
|
diff = 0;
|
|
OPUS_CLEAR(surround_dynalloc, mask_end);
|
|
} else {
|
|
for(i=0;i<mask_end;i++)
|
|
surround_dynalloc[i] = MAX16(0, surround_dynalloc[i]-QCONST16(.25f, DB_SHIFT));
|
|
}
|
|
}
|
|
mask_avg += QCONST16(.2f, DB_SHIFT);
|
|
/* Convert to 1/64th units used for the trim */
|
|
surround_trim = 64*diff;
|
|
/*printf("%d %d ", mask_avg, surround_trim);*/
|
|
surround_masking = mask_avg;
|
|
}
|
|
/* Temporal VBR (but not for LFE) */
|
|
if (!st->lfe)
|
|
{
|
|
opus_val16 follow=-QCONST16(10.0f,DB_SHIFT);
|
|
opus_val32 frame_avg=0;
|
|
opus_val16 offset = shortBlocks?HALF16(SHL16(LM, DB_SHIFT)):0;
|
|
for(i=start;i<end;i++)
|
|
{
|
|
follow = MAX16(follow-QCONST16(1.f, DB_SHIFT), bandLogE[i]-offset);
|
|
if (C==2)
|
|
follow = MAX16(follow, bandLogE[i+nbEBands]-offset);
|
|
frame_avg += follow;
|
|
}
|
|
frame_avg /= (end-start);
|
|
temporal_vbr = SUB16(frame_avg,st->spec_avg);
|
|
temporal_vbr = MIN16(QCONST16(3.f, DB_SHIFT), MAX16(-QCONST16(1.5f, DB_SHIFT), temporal_vbr));
|
|
st->spec_avg += MULT16_16_Q15(QCONST16(.02f, 15), temporal_vbr);
|
|
}
|
|
/*for (i=0;i<21;i++)
|
|
printf("%f ", bandLogE[i]);
|
|
printf("\n");*/
|
|
|
|
if (!secondMdct)
|
|
{
|
|
OPUS_COPY(bandLogE2, bandLogE, C*nbEBands);
|
|
}
|
|
|
|
/* Last chance to catch any transient we might have missed in the
|
|
time-domain analysis */
|
|
if (LM>0 && ec_tell(enc)+3<=total_bits && !isTransient && st->complexity>=5 && !st->lfe)
|
|
{
|
|
if (patch_transient_decision(bandLogE, oldBandE, nbEBands, start, end, C))
|
|
{
|
|
isTransient = 1;
|
|
shortBlocks = M;
|
|
compute_mdcts(mode, shortBlocks, in, freq, C, CC, LM, st->upsample, st->arch);
|
|
compute_band_energies(mode, freq, bandE, effEnd, C, LM);
|
|
amp2Log2(mode, effEnd, end, bandE, bandLogE, C);
|
|
/* Compensate for the scaling of short vs long mdcts */
|
|
for (i=0;i<C*nbEBands;i++)
|
|
bandLogE2[i] += HALF16(SHL16(LM, DB_SHIFT));
|
|
tf_estimate = QCONST16(.2f,14);
|
|
}
|
|
}
|
|
|
|
if (LM>0 && ec_tell(enc)+3<=total_bits)
|
|
ec_enc_bit_logp(enc, isTransient, 3);
|
|
|
|
ALLOC(X, C*N, celt_norm); /**< Interleaved normalised MDCTs */
|
|
|
|
/* Band normalisation */
|
|
normalise_bands(mode, freq, X, bandE, effEnd, C, M);
|
|
|
|
ALLOC(tf_res, nbEBands, int);
|
|
/* Disable variable tf resolution for hybrid and at very low bitrate */
|
|
if (effectiveBytes>=15*C && start==0 && st->complexity>=2 && !st->lfe)
|
|
{
|
|
int lambda;
|
|
if (effectiveBytes<40)
|
|
lambda = 12;
|
|
else if (effectiveBytes<60)
|
|
lambda = 6;
|
|
else if (effectiveBytes<100)
|
|
lambda = 4;
|
|
else
|
|
lambda = 3;
|
|
lambda*=2;
|
|
tf_select = tf_analysis(mode, effEnd, isTransient, tf_res, lambda, X, N, LM, &tf_sum, tf_estimate, tf_chan);
|
|
for (i=effEnd;i<end;i++)
|
|
tf_res[i] = tf_res[effEnd-1];
|
|
} else {
|
|
tf_sum = 0;
|
|
for (i=0;i<end;i++)
|
|
tf_res[i] = isTransient;
|
|
tf_select=0;
|
|
}
|
|
|
|
ALLOC(error, C*nbEBands, opus_val16);
|
|
quant_coarse_energy(mode, start, end, effEnd, bandLogE,
|
|
oldBandE, total_bits, error, enc,
|
|
C, LM, nbAvailableBytes, st->force_intra,
|
|
&st->delayedIntra, st->complexity >= 4, st->loss_rate, st->lfe);
|
|
|
|
tf_encode(start, end, isTransient, tf_res, LM, tf_select, enc);
|
|
|
|
if (ec_tell(enc)+4<=total_bits)
|
|
{
|
|
if (st->lfe)
|
|
{
|
|
st->tapset_decision = 0;
|
|
st->spread_decision = SPREAD_NORMAL;
|
|
} else if (shortBlocks || st->complexity < 3 || nbAvailableBytes < 10*C || start != 0)
|
|
{
|
|
if (st->complexity == 0)
|
|
st->spread_decision = SPREAD_NONE;
|
|
else
|
|
st->spread_decision = SPREAD_NORMAL;
|
|
} else {
|
|
/* Disable new spreading+tapset estimator until we can show it works
|
|
better than the old one. So far it seems like spreading_decision()
|
|
works best. */
|
|
#if 0
|
|
if (st->analysis.valid)
|
|
{
|
|
static const opus_val16 spread_thresholds[3] = {-QCONST16(.6f, 15), -QCONST16(.2f, 15), -QCONST16(.07f, 15)};
|
|
static const opus_val16 spread_histeresis[3] = {QCONST16(.15f, 15), QCONST16(.07f, 15), QCONST16(.02f, 15)};
|
|
static const opus_val16 tapset_thresholds[2] = {QCONST16(.0f, 15), QCONST16(.15f, 15)};
|
|
static const opus_val16 tapset_histeresis[2] = {QCONST16(.1f, 15), QCONST16(.05f, 15)};
|
|
st->spread_decision = hysteresis_decision(-st->analysis.tonality, spread_thresholds, spread_histeresis, 3, st->spread_decision);
|
|
st->tapset_decision = hysteresis_decision(st->analysis.tonality_slope, tapset_thresholds, tapset_histeresis, 2, st->tapset_decision);
|
|
} else
|
|
#endif
|
|
{
|
|
st->spread_decision = spreading_decision(mode, X,
|
|
&st->tonal_average, st->spread_decision, &st->hf_average,
|
|
&st->tapset_decision, pf_on&&!shortBlocks, effEnd, C, M);
|
|
}
|
|
/*printf("%d %d\n", st->tapset_decision, st->spread_decision);*/
|
|
/*printf("%f %d %f %d\n\n", st->analysis.tonality, st->spread_decision, st->analysis.tonality_slope, st->tapset_decision);*/
|
|
}
|
|
ec_enc_icdf(enc, st->spread_decision, spread_icdf, 5);
|
|
}
|
|
|
|
ALLOC(offsets, nbEBands, int);
|
|
|
|
maxDepth = dynalloc_analysis(bandLogE, bandLogE2, nbEBands, start, end, C, offsets,
|
|
st->lsb_depth, mode->logN, isTransient, st->vbr, st->constrained_vbr,
|
|
eBands, LM, effectiveBytes, &tot_boost, st->lfe, surround_dynalloc);
|
|
/* For LFE, everything interesting is in the first band */
|
|
if (st->lfe)
|
|
offsets[0] = IMIN(8, effectiveBytes/3);
|
|
ALLOC(cap, nbEBands, int);
|
|
init_caps(mode,cap,LM,C);
|
|
|
|
dynalloc_logp = 6;
|
|
total_bits<<=BITRES;
|
|
total_boost = 0;
|
|
tell = ec_tell_frac(enc);
|
|
for (i=start;i<end;i++)
|
|
{
|
|
int width, quanta;
|
|
int dynalloc_loop_logp;
|
|
int boost;
|
|
int j;
|
|
width = C*(eBands[i+1]-eBands[i])<<LM;
|
|
/* quanta is 6 bits, but no more than 1 bit/sample
|
|
and no less than 1/8 bit/sample */
|
|
quanta = IMIN(width<<BITRES, IMAX(6<<BITRES, width));
|
|
dynalloc_loop_logp = dynalloc_logp;
|
|
boost = 0;
|
|
for (j = 0; tell+(dynalloc_loop_logp<<BITRES) < total_bits-total_boost
|
|
&& boost < cap[i]; j++)
|
|
{
|
|
int flag;
|
|
flag = j<offsets[i];
|
|
ec_enc_bit_logp(enc, flag, dynalloc_loop_logp);
|
|
tell = ec_tell_frac(enc);
|
|
if (!flag)
|
|
break;
|
|
boost += quanta;
|
|
total_boost += quanta;
|
|
dynalloc_loop_logp = 1;
|
|
}
|
|
/* Making dynalloc more likely */
|
|
if (j)
|
|
dynalloc_logp = IMAX(2, dynalloc_logp-1);
|
|
offsets[i] = boost;
|
|
}
|
|
|
|
if (C==2)
|
|
{
|
|
static const opus_val16 intensity_thresholds[21]=
|
|
/* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 off*/
|
|
{ 1, 2, 3, 4, 5, 6, 7, 8,16,24,36,44,50,56,62,67,72,79,88,106,134};
|
|
static const opus_val16 intensity_histeresis[21]=
|
|
{ 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 4, 5, 6, 8, 8};
|
|
|
|
/* Always use MS for 2.5 ms frames until we can do a better analysis */
|
|
if (LM!=0)
|
|
dual_stereo = stereo_analysis(mode, X, LM, N);
|
|
|
|
st->intensity = hysteresis_decision((opus_val16)(equiv_rate/1000),
|
|
intensity_thresholds, intensity_histeresis, 21, st->intensity);
|
|
st->intensity = IMIN(end,IMAX(start, st->intensity));
|
|
}
|
|
|
|
alloc_trim = 5;
|
|
if (tell+(6<<BITRES) <= total_bits - total_boost)
|
|
{
|
|
if (st->lfe)
|
|
alloc_trim = 5;
|
|
else
|
|
alloc_trim = alloc_trim_analysis(mode, X, bandLogE,
|
|
end, LM, C, N, &st->analysis, &st->stereo_saving, tf_estimate,
|
|
st->intensity, surround_trim, st->arch);
|
|
ec_enc_icdf(enc, alloc_trim, trim_icdf, 7);
|
|
tell = ec_tell_frac(enc);
|
|
}
|
|
|
|
/* Variable bitrate */
|
|
if (vbr_rate>0)
|
|
{
|
|
opus_val16 alpha;
|
|
opus_int32 delta;
|
|
/* The target rate in 8th bits per frame */
|
|
opus_int32 target, base_target;
|
|
opus_int32 min_allowed;
|
|
int lm_diff = mode->maxLM - LM;
|
|
|
|
/* Don't attempt to use more than 510 kb/s, even for frames smaller than 20 ms.
|
|
The CELT allocator will just not be able to use more than that anyway. */
|
|
nbCompressedBytes = IMIN(nbCompressedBytes,1275>>(3-LM));
|
|
base_target = vbr_rate - ((40*C+20)<<BITRES);
|
|
|
|
if (st->constrained_vbr)
|
|
base_target += (st->vbr_offset>>lm_diff);
|
|
|
|
target = compute_vbr(mode, &st->analysis, base_target, LM, equiv_rate,
|
|
st->lastCodedBands, C, st->intensity, st->constrained_vbr,
|
|
st->stereo_saving, tot_boost, tf_estimate, pitch_change, maxDepth,
|
|
st->variable_duration, st->lfe, st->energy_mask!=NULL, surround_masking,
|
|
temporal_vbr);
|
|
|
|
/* The current offset is removed from the target and the space used
|
|
so far is added*/
|
|
target=target+tell;
|
|
/* In VBR mode the frame size must not be reduced so much that it would
|
|
result in the encoder running out of bits.
|
|
The margin of 2 bytes ensures that none of the bust-prevention logic
|
|
in the decoder will have triggered so far. */
|
|
min_allowed = ((tell+total_boost+(1<<(BITRES+3))-1)>>(BITRES+3)) + 2 - nbFilledBytes;
|
|
|
|
nbAvailableBytes = (target+(1<<(BITRES+2)))>>(BITRES+3);
|
|
nbAvailableBytes = IMAX(min_allowed,nbAvailableBytes);
|
|
nbAvailableBytes = IMIN(nbCompressedBytes,nbAvailableBytes+nbFilledBytes) - nbFilledBytes;
|
|
|
|
/* By how much did we "miss" the target on that frame */
|
|
delta = target - vbr_rate;
|
|
|
|
target=nbAvailableBytes<<(BITRES+3);
|
|
|
|
/*If the frame is silent we don't adjust our drift, otherwise
|
|
the encoder will shoot to very high rates after hitting a
|
|
span of silence, but we do allow the bitres to refill.
|
|
This means that we'll undershoot our target in CVBR/VBR modes
|
|
on files with lots of silence. */
|
|
if(silence)
|
|
{
|
|
nbAvailableBytes = 2;
|
|
target = 2*8<<BITRES;
|
|
delta = 0;
|
|
}
|
|
|
|
if (st->vbr_count < 970)
|
|
{
|
|
st->vbr_count++;
|
|
alpha = celt_rcp(SHL32(EXTEND32(st->vbr_count+20),16));
|
|
} else
|
|
alpha = QCONST16(.001f,15);
|
|
/* How many bits have we used in excess of what we're allowed */
|
|
if (st->constrained_vbr)
|
|
st->vbr_reservoir += target - vbr_rate;
|
|
/*printf ("%d\n", st->vbr_reservoir);*/
|
|
|
|
/* Compute the offset we need to apply in order to reach the target */
|
|
if (st->constrained_vbr)
|
|
{
|
|
st->vbr_drift += (opus_int32)MULT16_32_Q15(alpha,(delta*(1<<lm_diff))-st->vbr_offset-st->vbr_drift);
|
|
st->vbr_offset = -st->vbr_drift;
|
|
}
|
|
/*printf ("%d\n", st->vbr_drift);*/
|
|
|
|
if (st->constrained_vbr && st->vbr_reservoir < 0)
|
|
{
|
|
/* We're under the min value -- increase rate */
|
|
int adjust = (-st->vbr_reservoir)/(8<<BITRES);
|
|
/* Unless we're just coding silence */
|
|
nbAvailableBytes += silence?0:adjust;
|
|
st->vbr_reservoir = 0;
|
|
/*printf ("+%d\n", adjust);*/
|
|
}
|
|
nbCompressedBytes = IMIN(nbCompressedBytes,nbAvailableBytes+nbFilledBytes);
|
|
/*printf("%d\n", nbCompressedBytes*50*8);*/
|
|
/* This moves the raw bits to take into account the new compressed size */
|
|
ec_enc_shrink(enc, nbCompressedBytes);
|
|
}
|
|
|
|
/* Bit allocation */
|
|
ALLOC(fine_quant, nbEBands, int);
|
|
ALLOC(pulses, nbEBands, int);
|
|
ALLOC(fine_priority, nbEBands, int);
|
|
|
|
/* bits = packet size - where we are - safety*/
|
|
bits = (((opus_int32)nbCompressedBytes*8)<<BITRES) - ec_tell_frac(enc) - 1;
|
|
anti_collapse_rsv = isTransient&&LM>=2&&bits>=((LM+2)<<BITRES) ? (1<<BITRES) : 0;
|
|
bits -= anti_collapse_rsv;
|
|
signalBandwidth = end-1;
|
|
#ifndef DISABLE_FLOAT_API
|
|
if (st->analysis.valid)
|
|
{
|
|
int min_bandwidth;
|
|
if (equiv_rate < (opus_int32)32000*C)
|
|
min_bandwidth = 13;
|
|
else if (equiv_rate < (opus_int32)48000*C)
|
|
min_bandwidth = 16;
|
|
else if (equiv_rate < (opus_int32)60000*C)
|
|
min_bandwidth = 18;
|
|
else if (equiv_rate < (opus_int32)80000*C)
|
|
min_bandwidth = 19;
|
|
else
|
|
min_bandwidth = 20;
|
|
signalBandwidth = IMAX(st->analysis.bandwidth, min_bandwidth);
|
|
}
|
|
#endif
|
|
if (st->lfe)
|
|
signalBandwidth = 1;
|
|
codedBands = compute_allocation(mode, start, end, offsets, cap,
|
|
alloc_trim, &st->intensity, &dual_stereo, bits, &balance, pulses,
|
|
fine_quant, fine_priority, C, LM, enc, 1, st->lastCodedBands, signalBandwidth);
|
|
if (st->lastCodedBands)
|
|
st->lastCodedBands = IMIN(st->lastCodedBands+1,IMAX(st->lastCodedBands-1,codedBands));
|
|
else
|
|
st->lastCodedBands = codedBands;
|
|
|
|
quant_fine_energy(mode, start, end, oldBandE, error, fine_quant, enc, C);
|
|
|
|
/* Residual quantisation */
|
|
ALLOC(collapse_masks, C*nbEBands, unsigned char);
|
|
quant_all_bands(1, mode, start, end, X, C==2 ? X+N : NULL, collapse_masks,
|
|
bandE, pulses, shortBlocks, st->spread_decision,
|
|
dual_stereo, st->intensity, tf_res, nbCompressedBytes*(8<<BITRES)-anti_collapse_rsv,
|
|
balance, enc, LM, codedBands, &st->rng, st->arch);
|
|
|
|
if (anti_collapse_rsv > 0)
|
|
{
|
|
anti_collapse_on = st->consec_transient<2;
|
|
#ifdef FUZZING
|
|
anti_collapse_on = rand()&0x1;
|
|
#endif
|
|
ec_enc_bits(enc, anti_collapse_on, 1);
|
|
}
|
|
quant_energy_finalise(mode, start, end, oldBandE, error, fine_quant, fine_priority, nbCompressedBytes*8-ec_tell(enc), enc, C);
|
|
|
|
if (silence)
|
|
{
|
|
for (i=0;i<C*nbEBands;i++)
|
|
oldBandE[i] = -QCONST16(28.f,DB_SHIFT);
|
|
}
|
|
|
|
#ifdef RESYNTH
|
|
/* Re-synthesis of the coded audio if required */
|
|
{
|
|
celt_sig *out_mem[2];
|
|
|
|
if (anti_collapse_on)
|
|
{
|
|
anti_collapse(mode, X, collapse_masks, LM, C, N,
|
|
start, end, oldBandE, oldLogE, oldLogE2, pulses, st->rng);
|
|
}
|
|
|
|
c=0; do {
|
|
OPUS_MOVE(st->syn_mem[c], st->syn_mem[c]+N, 2*MAX_PERIOD-N+overlap/2);
|
|
} while (++c<CC);
|
|
|
|
c=0; do {
|
|
out_mem[c] = st->syn_mem[c]+2*MAX_PERIOD-N;
|
|
} while (++c<CC);
|
|
|
|
celt_synthesis(mode, X, out_mem, oldBandE, start, effEnd,
|
|
C, CC, isTransient, LM, st->upsample, silence, st->arch);
|
|
|
|
c=0; do {
|
|
st->prefilter_period=IMAX(st->prefilter_period, COMBFILTER_MINPERIOD);
|
|
st->prefilter_period_old=IMAX(st->prefilter_period_old, COMBFILTER_MINPERIOD);
|
|
comb_filter(out_mem[c], out_mem[c], st->prefilter_period_old, st->prefilter_period, mode->shortMdctSize,
|
|
st->prefilter_gain_old, st->prefilter_gain, st->prefilter_tapset_old, st->prefilter_tapset,
|
|
mode->window, overlap);
|
|
if (LM!=0)
|
|
comb_filter(out_mem[c]+mode->shortMdctSize, out_mem[c]+mode->shortMdctSize, st->prefilter_period, pitch_index, N-mode->shortMdctSize,
|
|
st->prefilter_gain, gain1, st->prefilter_tapset, prefilter_tapset,
|
|
mode->window, overlap);
|
|
} while (++c<CC);
|
|
|
|
/* We reuse freq[] as scratch space for the de-emphasis */
|
|
deemphasis(out_mem, (opus_val16*)pcm, N, CC, st->upsample, mode->preemph, st->preemph_memD);
|
|
st->prefilter_period_old = st->prefilter_period;
|
|
st->prefilter_gain_old = st->prefilter_gain;
|
|
st->prefilter_tapset_old = st->prefilter_tapset;
|
|
}
|
|
#endif
|
|
|
|
st->prefilter_period = pitch_index;
|
|
st->prefilter_gain = gain1;
|
|
st->prefilter_tapset = prefilter_tapset;
|
|
#ifdef RESYNTH
|
|
if (LM!=0)
|
|
{
|
|
st->prefilter_period_old = st->prefilter_period;
|
|
st->prefilter_gain_old = st->prefilter_gain;
|
|
st->prefilter_tapset_old = st->prefilter_tapset;
|
|
}
|
|
#endif
|
|
|
|
if (CC==2&&C==1) {
|
|
OPUS_COPY(&oldBandE[nbEBands], oldBandE, nbEBands);
|
|
}
|
|
|
|
if (!isTransient)
|
|
{
|
|
OPUS_COPY(oldLogE2, oldLogE, CC*nbEBands);
|
|
OPUS_COPY(oldLogE, oldBandE, CC*nbEBands);
|
|
} else {
|
|
for (i=0;i<CC*nbEBands;i++)
|
|
oldLogE[i] = MIN16(oldLogE[i], oldBandE[i]);
|
|
}
|
|
/* In case start or end were to change */
|
|
c=0; do
|
|
{
|
|
for (i=0;i<start;i++)
|
|
{
|
|
oldBandE[c*nbEBands+i]=0;
|
|
oldLogE[c*nbEBands+i]=oldLogE2[c*nbEBands+i]=-QCONST16(28.f,DB_SHIFT);
|
|
}
|
|
for (i=end;i<nbEBands;i++)
|
|
{
|
|
oldBandE[c*nbEBands+i]=0;
|
|
oldLogE[c*nbEBands+i]=oldLogE2[c*nbEBands+i]=-QCONST16(28.f,DB_SHIFT);
|
|
}
|
|
} while (++c<CC);
|
|
|
|
if (isTransient || transient_got_disabled)
|
|
st->consec_transient++;
|
|
else
|
|
st->consec_transient=0;
|
|
st->rng = enc->rng;
|
|
|
|
/* If there's any room left (can only happen for very high rates),
|
|
it's already filled with zeros */
|
|
ec_enc_done(enc);
|
|
|
|
#ifdef CUSTOM_MODES
|
|
if (st->signalling)
|
|
nbCompressedBytes++;
|
|
#endif
|
|
|
|
RESTORE_STACK;
|
|
if (ec_get_error(enc))
|
|
return OPUS_INTERNAL_ERROR;
|
|
else
|
|
return nbCompressedBytes;
|
|
}
|
|
|
|
|
|
#ifdef CUSTOM_MODES
|
|
|
|
#ifdef FIXED_POINT
|
|
int opus_custom_encode(CELTEncoder * OPUS_RESTRICT st, const opus_int16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes)
|
|
{
|
|
return celt_encode_with_ec(st, pcm, frame_size, compressed, nbCompressedBytes, NULL);
|
|
}
|
|
|
|
#ifndef DISABLE_FLOAT_API
|
|
int opus_custom_encode_float(CELTEncoder * OPUS_RESTRICT st, const float * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes)
|
|
{
|
|
int j, ret, C, N;
|
|
VARDECL(opus_int16, in);
|
|
ALLOC_STACK;
|
|
|
|
if (pcm==NULL)
|
|
return OPUS_BAD_ARG;
|
|
|
|
C = st->channels;
|
|
N = frame_size;
|
|
ALLOC(in, C*N, opus_int16);
|
|
|
|
for (j=0;j<C*N;j++)
|
|
in[j] = FLOAT2INT16(pcm[j]);
|
|
|
|
ret=celt_encode_with_ec(st,in,frame_size,compressed,nbCompressedBytes, NULL);
|
|
#ifdef RESYNTH
|
|
for (j=0;j<C*N;j++)
|
|
((float*)pcm)[j]=in[j]*(1.f/32768.f);
|
|
#endif
|
|
RESTORE_STACK;
|
|
return ret;
|
|
}
|
|
#endif /* DISABLE_FLOAT_API */
|
|
#else
|
|
|
|
int opus_custom_encode(CELTEncoder * OPUS_RESTRICT st, const opus_int16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes)
|
|
{
|
|
int j, ret, C, N;
|
|
VARDECL(celt_sig, in);
|
|
ALLOC_STACK;
|
|
|
|
if (pcm==NULL)
|
|
return OPUS_BAD_ARG;
|
|
|
|
C=st->channels;
|
|
N=frame_size;
|
|
ALLOC(in, C*N, celt_sig);
|
|
for (j=0;j<C*N;j++) {
|
|
in[j] = SCALEOUT(pcm[j]);
|
|
}
|
|
|
|
ret = celt_encode_with_ec(st,in,frame_size,compressed,nbCompressedBytes, NULL);
|
|
#ifdef RESYNTH
|
|
for (j=0;j<C*N;j++)
|
|
((opus_int16*)pcm)[j] = FLOAT2INT16(in[j]);
|
|
#endif
|
|
RESTORE_STACK;
|
|
return ret;
|
|
}
|
|
|
|
int opus_custom_encode_float(CELTEncoder * OPUS_RESTRICT st, const float * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes)
|
|
{
|
|
return celt_encode_with_ec(st, pcm, frame_size, compressed, nbCompressedBytes, NULL);
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* CUSTOM_MODES */
|
|
|
|
int opus_custom_encoder_ctl(CELTEncoder * OPUS_RESTRICT st, int request, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, request);
|
|
switch (request)
|
|
{
|
|
case OPUS_SET_COMPLEXITY_REQUEST:
|
|
{
|
|
int value = va_arg(ap, opus_int32);
|
|
if (value<0 || value>10)
|
|
goto bad_arg;
|
|
st->complexity = value;
|
|
}
|
|
break;
|
|
case CELT_SET_START_BAND_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value<0 || value>=st->mode->nbEBands)
|
|
goto bad_arg;
|
|
st->start = value;
|
|
}
|
|
break;
|
|
case CELT_SET_END_BAND_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value<1 || value>st->mode->nbEBands)
|
|
goto bad_arg;
|
|
st->end = value;
|
|
}
|
|
break;
|
|
case CELT_SET_PREDICTION_REQUEST:
|
|
{
|
|
int value = va_arg(ap, opus_int32);
|
|
if (value<0 || value>2)
|
|
goto bad_arg;
|
|
st->disable_pf = value<=1;
|
|
st->force_intra = value==0;
|
|
}
|
|
break;
|
|
case OPUS_SET_PACKET_LOSS_PERC_REQUEST:
|
|
{
|
|
int value = va_arg(ap, opus_int32);
|
|
if (value<0 || value>100)
|
|
goto bad_arg;
|
|
st->loss_rate = value;
|
|
}
|
|
break;
|
|
case OPUS_SET_VBR_CONSTRAINT_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
st->constrained_vbr = value;
|
|
}
|
|
break;
|
|
case OPUS_SET_VBR_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
st->vbr = value;
|
|
}
|
|
break;
|
|
case OPUS_SET_BITRATE_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value<=500 && value!=OPUS_BITRATE_MAX)
|
|
goto bad_arg;
|
|
value = IMIN(value, 260000*st->channels);
|
|
st->bitrate = value;
|
|
}
|
|
break;
|
|
case CELT_SET_CHANNELS_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value<1 || value>2)
|
|
goto bad_arg;
|
|
st->stream_channels = value;
|
|
}
|
|
break;
|
|
case OPUS_SET_LSB_DEPTH_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value<8 || value>24)
|
|
goto bad_arg;
|
|
st->lsb_depth=value;
|
|
}
|
|
break;
|
|
case OPUS_GET_LSB_DEPTH_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
*value=st->lsb_depth;
|
|
}
|
|
break;
|
|
case OPUS_SET_EXPERT_FRAME_DURATION_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
st->variable_duration = value;
|
|
}
|
|
break;
|
|
case OPUS_RESET_STATE:
|
|
{
|
|
int i;
|
|
opus_val16 *oldBandE, *oldLogE, *oldLogE2;
|
|
oldBandE = (opus_val16*)(st->in_mem+st->channels*(st->mode->overlap+COMBFILTER_MAXPERIOD));
|
|
oldLogE = oldBandE + st->channels*st->mode->nbEBands;
|
|
oldLogE2 = oldLogE + st->channels*st->mode->nbEBands;
|
|
OPUS_CLEAR((char*)&st->ENCODER_RESET_START,
|
|
opus_custom_encoder_get_size(st->mode, st->channels)-
|
|
((char*)&st->ENCODER_RESET_START - (char*)st));
|
|
for (i=0;i<st->channels*st->mode->nbEBands;i++)
|
|
oldLogE[i]=oldLogE2[i]=-QCONST16(28.f,DB_SHIFT);
|
|
st->vbr_offset = 0;
|
|
st->delayedIntra = 1;
|
|
st->spread_decision = SPREAD_NORMAL;
|
|
st->tonal_average = 256;
|
|
st->hf_average = 0;
|
|
st->tapset_decision = 0;
|
|
}
|
|
break;
|
|
#ifdef CUSTOM_MODES
|
|
case CELT_SET_INPUT_CLIPPING_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
st->clip = value;
|
|
}
|
|
break;
|
|
#endif
|
|
case CELT_SET_SIGNALLING_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
st->signalling = value;
|
|
}
|
|
break;
|
|
case CELT_SET_ANALYSIS_REQUEST:
|
|
{
|
|
AnalysisInfo *info = va_arg(ap, AnalysisInfo *);
|
|
if (info)
|
|
OPUS_COPY(&st->analysis, info, 1);
|
|
}
|
|
break;
|
|
case CELT_GET_MODE_REQUEST:
|
|
{
|
|
const CELTMode ** value = va_arg(ap, const CELTMode**);
|
|
if (value==0)
|
|
goto bad_arg;
|
|
*value=st->mode;
|
|
}
|
|
break;
|
|
case OPUS_GET_FINAL_RANGE_REQUEST:
|
|
{
|
|
opus_uint32 * value = va_arg(ap, opus_uint32 *);
|
|
if (value==0)
|
|
goto bad_arg;
|
|
*value=st->rng;
|
|
}
|
|
break;
|
|
case OPUS_SET_LFE_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
st->lfe = value;
|
|
}
|
|
break;
|
|
case OPUS_SET_ENERGY_MASK_REQUEST:
|
|
{
|
|
opus_val16 *value = va_arg(ap, opus_val16*);
|
|
st->energy_mask = value;
|
|
}
|
|
break;
|
|
default:
|
|
goto bad_request;
|
|
}
|
|
va_end(ap);
|
|
return OPUS_OK;
|
|
bad_arg:
|
|
va_end(ap);
|
|
return OPUS_BAD_ARG;
|
|
bad_request:
|
|
va_end(ap);
|
|
return OPUS_UNIMPLEMENTED;
|
|
}
|