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2489 lines
82 KiB
C
2489 lines
82 KiB
C
/* Copyright (c) 2010-2011 Xiph.Org Foundation, Skype Limited
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Written by Jean-Marc Valin and Koen Vos */
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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 OPUS_HAVE_CONFIG_H
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#include "opus_config.h"
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#endif
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#include <stdarg.h>
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#include "celt.h"
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#include "entenc.h"
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#include "opus_modes.h"
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#include "API.h"
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#include "stack_alloc.h"
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#include "float_cast.h"
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#include "opus.h"
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#include "arch.h"
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#include "opus_private.h"
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#include "os_support.h"
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#include "cpu_support.h"
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#include "analysis.h"
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#include "mathops.h"
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#include "tuning_parameters.h"
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#ifdef OPUS_FIXED_POINT
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#include "fixed/structs_FIX.h"
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#else
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#include "float/structs_FLP.h"
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#endif
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#define MAX_ENCODER_BUFFER 480
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typedef struct {
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opus_val32 XX, XY, YY;
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opus_val16 smoothed_width;
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opus_val16 max_follower;
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} StereoWidthState;
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struct OpusEncoder {
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int celt_enc_offset;
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int silk_enc_offset;
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silk_EncControlStruct silk_mode;
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int application;
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int channels;
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int delay_compensation;
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int force_channels;
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int signal_type;
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int user_bandwidth;
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int max_bandwidth;
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int user_forced_mode;
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int voice_ratio;
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opus_int32 Fs;
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int use_vbr;
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int vbr_constraint;
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int variable_duration;
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opus_int32 bitrate_bps;
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opus_int32 user_bitrate_bps;
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int lsb_depth;
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int encoder_buffer;
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int lfe;
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#define OPUS_ENCODER_RESET_START stream_channels
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int stream_channels;
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opus_int16 hybrid_stereo_width_Q14;
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opus_int32 variable_HP_smth2_Q15;
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opus_val16 prev_HB_gain;
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opus_val32 hp_mem[4];
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int mode;
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int prev_mode;
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int prev_channels;
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int prev_framesize;
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int bandwidth;
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int silk_bw_switch;
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/* Sampling rate (at the API level) */
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int first;
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opus_val16 * energy_masking;
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StereoWidthState width_mem;
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opus_val16 delay_buffer[MAX_ENCODER_BUFFER*2];
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#ifndef DISABLE_FLOAT_API
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TonalityAnalysisState analysis;
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int detected_bandwidth;
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int analysis_offset;
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#endif
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opus_uint32 rangeFinal;
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int arch;
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};
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/* Transition tables for the voice and music. First column is the
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middle (memoriless) threshold. The second column is the hysteresis
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(difference with the middle) */
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static const opus_int32 mono_voice_bandwidth_thresholds[8] = {
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11000, 1000, /* NB<->MB */
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14000, 1000, /* MB<->WB */
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17000, 1000, /* WB<->SWB */
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21000, 2000, /* SWB<->FB */
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};
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static const opus_int32 mono_music_bandwidth_thresholds[8] = {
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12000, 1000, /* NB<->MB */
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15000, 1000, /* MB<->WB */
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18000, 2000, /* WB<->SWB */
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22000, 2000, /* SWB<->FB */
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};
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static const opus_int32 stereo_voice_bandwidth_thresholds[8] = {
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11000, 1000, /* NB<->MB */
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14000, 1000, /* MB<->WB */
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21000, 2000, /* WB<->SWB */
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28000, 2000, /* SWB<->FB */
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};
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static const opus_int32 stereo_music_bandwidth_thresholds[8] = {
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12000, 1000, /* NB<->MB */
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18000, 2000, /* MB<->WB */
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21000, 2000, /* WB<->SWB */
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30000, 2000, /* SWB<->FB */
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};
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/* Threshold bit-rates for switching between mono and stereo */
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static const opus_int32 stereo_voice_threshold = 30000;
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static const opus_int32 stereo_music_threshold = 30000;
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/* Threshold bit-rate for switching between SILK/hybrid and CELT-only */
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static const opus_int32 mode_thresholds[2][2] = {
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/* voice */ /* music */
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{ 64000, 16000}, /* mono */
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{ 36000, 16000}, /* stereo */
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};
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int opus_encoder_get_size(int channels)
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{
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int silkEncSizeBytes, celtEncSizeBytes;
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int ret;
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if (channels<1 || channels > 2)
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return 0;
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ret = silk_Get_Encoder_Size( &silkEncSizeBytes );
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if (ret)
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return 0;
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silkEncSizeBytes = align(silkEncSizeBytes);
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celtEncSizeBytes = celt_encoder_get_size(channels);
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return align(sizeof(OpusEncoder))+silkEncSizeBytes+celtEncSizeBytes;
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}
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int opus_encoder_init(OpusEncoder* st, opus_int32 Fs, int channels, int application)
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{
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void *silk_enc;
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CELTEncoder *celt_enc;
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int err;
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int ret, silkEncSizeBytes;
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if((Fs!=48000&&Fs!=24000&&Fs!=16000&&Fs!=12000&&Fs!=8000)||(channels!=1&&channels!=2)||
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(application != OPUS_APPLICATION_VOIP && application != OPUS_APPLICATION_AUDIO
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&& application != OPUS_APPLICATION_RESTRICTED_LOWDELAY))
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return OPUS_BAD_ARG;
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OPUS_CLEAR((char*)st, opus_encoder_get_size(channels));
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/* Create SILK encoder */
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ret = silk_Get_Encoder_Size( &silkEncSizeBytes );
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if (ret)
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return OPUS_BAD_ARG;
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silkEncSizeBytes = align(silkEncSizeBytes);
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st->silk_enc_offset = align(sizeof(OpusEncoder));
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st->celt_enc_offset = st->silk_enc_offset+silkEncSizeBytes;
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silk_enc = (char*)st+st->silk_enc_offset;
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celt_enc = (CELTEncoder*)((char*)st+st->celt_enc_offset);
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st->stream_channels = st->channels = channels;
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st->Fs = Fs;
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st->arch = opus_select_arch();
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ret = silk_InitEncoder( silk_enc, st->arch, &st->silk_mode );
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if(ret)return OPUS_INTERNAL_ERROR;
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/* default SILK parameters */
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st->silk_mode.nChannelsAPI = channels;
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st->silk_mode.nChannelsInternal = channels;
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st->silk_mode.API_sampleRate = st->Fs;
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st->silk_mode.maxInternalSampleRate = 16000;
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st->silk_mode.minInternalSampleRate = 8000;
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st->silk_mode.desiredInternalSampleRate = 16000;
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st->silk_mode.payloadSize_ms = 20;
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st->silk_mode.bitRate = 25000;
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st->silk_mode.packetLossPercentage = 0;
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st->silk_mode.complexity = 9;
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st->silk_mode.useInBandFEC = 0;
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st->silk_mode.useDTX = 0;
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st->silk_mode.useCBR = 0;
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st->silk_mode.reducedDependency = 0;
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/* Create CELT encoder */
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/* Initialize CELT encoder */
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err = celt_encoder_init(celt_enc, Fs, channels, st->arch);
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if(err!=OPUS_OK)return OPUS_INTERNAL_ERROR;
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celt_encoder_ctl(celt_enc, CELT_SET_SIGNALLING(0));
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celt_encoder_ctl(celt_enc, OPUS_SET_COMPLEXITY(st->silk_mode.complexity));
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st->use_vbr = 1;
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/* Makes constrained VBR the default (safer for real-time use) */
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st->vbr_constraint = 1;
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st->user_bitrate_bps = OPUS_AUTO;
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st->bitrate_bps = 3000+Fs*channels;
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st->application = application;
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st->signal_type = OPUS_AUTO;
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st->user_bandwidth = OPUS_AUTO;
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st->max_bandwidth = OPUS_BANDWIDTH_FULLBAND;
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st->force_channels = OPUS_AUTO;
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st->user_forced_mode = OPUS_AUTO;
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st->voice_ratio = -1;
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st->encoder_buffer = st->Fs/100;
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st->lsb_depth = 24;
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st->variable_duration = OPUS_FRAMESIZE_ARG;
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/* Delay compensation of 4 ms (2.5 ms for SILK's extra look-ahead
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+ 1.5 ms for SILK resamplers and stereo prediction) */
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st->delay_compensation = st->Fs/250;
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st->hybrid_stereo_width_Q14 = 1 << 14;
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st->prev_HB_gain = Q15ONE;
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st->variable_HP_smth2_Q15 = silk_LSHIFT( silk_lin2log( VARIABLE_HP_MIN_CUTOFF_HZ ), 8 );
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st->first = 1;
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st->mode = MODE_HYBRID;
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st->bandwidth = OPUS_BANDWIDTH_FULLBAND;
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return OPUS_OK;
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}
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static unsigned char gen_toc(int mode, int framerate, int bandwidth, int channels)
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{
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int period;
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unsigned char toc;
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period = 0;
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while (framerate < 400)
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{
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framerate <<= 1;
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period++;
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}
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if (mode == MODE_SILK_ONLY)
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{
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toc = (bandwidth-OPUS_BANDWIDTH_NARROWBAND)<<5;
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toc |= (period-2)<<3;
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} else if (mode == MODE_CELT_ONLY)
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{
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int tmp = bandwidth-OPUS_BANDWIDTH_MEDIUMBAND;
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if (tmp < 0)
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tmp = 0;
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toc = 0x80;
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toc |= tmp << 5;
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toc |= period<<3;
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} else /* Hybrid */
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{
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toc = 0x60;
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toc |= (bandwidth-OPUS_BANDWIDTH_SUPERWIDEBAND)<<4;
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toc |= (period-2)<<3;
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}
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toc |= (channels==2)<<2;
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return toc;
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}
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#ifndef OPUS_FIXED_POINT
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static void silk_biquad_float(
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const opus_val16 *in, /* I: Input signal */
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const opus_int32 *B_Q28, /* I: MA coefficients [3] */
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const opus_int32 *A_Q28, /* I: AR coefficients [2] */
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opus_val32 *S, /* I/O: State vector [2] */
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opus_val16 *out, /* O: Output signal */
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const opus_int32 len, /* I: Signal length (must be even) */
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int stride
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)
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{
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/* DIRECT FORM II TRANSPOSED (uses 2 element state vector) */
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opus_int k;
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opus_val32 vout;
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opus_val32 inval;
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opus_val32 A[2], B[3];
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A[0] = (opus_val32)(A_Q28[0] * (1.f/((opus_int32)1<<28)));
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A[1] = (opus_val32)(A_Q28[1] * (1.f/((opus_int32)1<<28)));
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B[0] = (opus_val32)(B_Q28[0] * (1.f/((opus_int32)1<<28)));
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B[1] = (opus_val32)(B_Q28[1] * (1.f/((opus_int32)1<<28)));
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B[2] = (opus_val32)(B_Q28[2] * (1.f/((opus_int32)1<<28)));
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/* Negate A_Q28 values and split in two parts */
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for( k = 0; k < len; k++ ) {
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/* S[ 0 ], S[ 1 ]: Q12 */
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inval = in[ k*stride ];
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vout = S[ 0 ] + B[0]*inval;
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S[ 0 ] = S[1] - vout*A[0] + B[1]*inval;
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S[ 1 ] = - vout*A[1] + B[2]*inval + VERY_SMALL;
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/* Scale back to Q0 and saturate */
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out[ k*stride ] = vout;
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}
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}
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#endif
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static void hp_cutoff(const opus_val16 *in, opus_int32 cutoff_Hz, opus_val16 *out, opus_val32 *hp_mem, int len, int channels, opus_int32 Fs)
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{
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opus_int32 B_Q28[ 3 ], A_Q28[ 2 ];
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opus_int32 Fc_Q19, r_Q28, r_Q22;
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silk_assert( cutoff_Hz <= silk_int32_MAX / SILK_FIX_CONST( 1.5 * 3.14159 / 1000, 19 ) );
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Fc_Q19 = silk_DIV32_16( silk_SMULBB( SILK_FIX_CONST( 1.5 * 3.14159 / 1000, 19 ), cutoff_Hz ), Fs/1000 );
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silk_assert( Fc_Q19 > 0 && Fc_Q19 < 32768 );
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r_Q28 = SILK_FIX_CONST( 1.0, 28 ) - silk_MUL( SILK_FIX_CONST( 0.92, 9 ), Fc_Q19 );
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/* b = r * [ 1; -2; 1 ]; */
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/* a = [ 1; -2 * r * ( 1 - 0.5 * Fc^2 ); r^2 ]; */
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B_Q28[ 0 ] = r_Q28;
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B_Q28[ 1 ] = silk_LSHIFT( -r_Q28, 1 );
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B_Q28[ 2 ] = r_Q28;
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/* -r * ( 2 - Fc * Fc ); */
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r_Q22 = silk_RSHIFT( r_Q28, 6 );
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A_Q28[ 0 ] = silk_SMULWW( r_Q22, silk_SMULWW( Fc_Q19, Fc_Q19 ) - SILK_FIX_CONST( 2.0, 22 ) );
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A_Q28[ 1 ] = silk_SMULWW( r_Q22, r_Q22 );
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#ifdef OPUS_FIXED_POINT
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silk_biquad_alt( in, B_Q28, A_Q28, hp_mem, out, len, channels );
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if( channels == 2 ) {
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silk_biquad_alt( in+1, B_Q28, A_Q28, hp_mem+2, out+1, len, channels );
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}
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#else
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silk_biquad_float( in, B_Q28, A_Q28, hp_mem, out, len, channels );
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if( channels == 2 ) {
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silk_biquad_float( in+1, B_Q28, A_Q28, hp_mem+2, out+1, len, channels );
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}
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#endif
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}
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#ifdef OPUS_FIXED_POINT
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static void dc_reject(const opus_val16 *in, opus_int32 cutoff_Hz, opus_val16 *out, opus_val32 *hp_mem, int len, int channels, opus_int32 Fs)
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{
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int c, i;
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int shift;
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/* Approximates -round(log2(4.*cutoff_Hz/Fs)) */
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shift=celt_ilog2(Fs/(cutoff_Hz*3));
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for (c=0;c<channels;c++)
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{
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for (i=0;i<len;i++)
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{
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opus_val32 x, tmp, y;
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x = SHL32(EXTEND32(in[channels*i+c]), 15);
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/* First stage */
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tmp = x-hp_mem[2*c];
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hp_mem[2*c] = hp_mem[2*c] + PSHR32(x - hp_mem[2*c], shift);
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/* Second stage */
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y = tmp - hp_mem[2*c+1];
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hp_mem[2*c+1] = hp_mem[2*c+1] + PSHR32(tmp - hp_mem[2*c+1], shift);
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out[channels*i+c] = EXTRACT16(SATURATE(PSHR32(y, 15), 32767));
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}
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}
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}
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#else
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static void dc_reject(const opus_val16 *in, opus_int32 cutoff_Hz, opus_val16 *out, opus_val32 *hp_mem, int len, int channels, opus_int32 Fs)
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{
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int c, i;
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float coef;
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coef = 4.0f*cutoff_Hz/Fs;
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for (c=0;c<channels;c++)
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{
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for (i=0;i<len;i++)
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{
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opus_val32 x, tmp, y;
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x = in[channels*i+c];
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/* First stage */
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tmp = x-hp_mem[2*c];
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hp_mem[2*c] = hp_mem[2*c] + coef*(x - hp_mem[2*c]) + VERY_SMALL;
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/* Second stage */
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y = tmp - hp_mem[2*c+1];
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hp_mem[2*c+1] = hp_mem[2*c+1] + coef*(tmp - hp_mem[2*c+1]) + VERY_SMALL;
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out[channels*i+c] = y;
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}
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}
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}
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#endif
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static void stereo_fade(const opus_val16 *in, opus_val16 *out, opus_val16 g1, opus_val16 g2,
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int overlap48, int frame_size, int channels, const opus_val16 *window, opus_int32 Fs)
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{
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int i;
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int overlap;
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int inc;
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inc = 48000/Fs;
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overlap=overlap48/inc;
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g1 = Q15ONE-g1;
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g2 = Q15ONE-g2;
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for (i=0;i<overlap;i++)
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{
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opus_val32 diff;
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opus_val16 g, w;
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w = MULT16_16_Q15(window[i*inc], window[i*inc]);
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g = SHR32(MAC16_16(MULT16_16(w,g2),
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Q15ONE-w, g1), 15);
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diff = EXTRACT16(HALF32((opus_val32)in[i*channels] - (opus_val32)in[i*channels+1]));
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diff = MULT16_16_Q15(g, diff);
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out[i*channels] = out[i*channels] - diff;
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out[i*channels+1] = out[i*channels+1] + diff;
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}
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for (;i<frame_size;i++)
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{
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opus_val32 diff;
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diff = EXTRACT16(HALF32((opus_val32)in[i*channels] - (opus_val32)in[i*channels+1]));
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diff = MULT16_16_Q15(g2, diff);
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out[i*channels] = out[i*channels] - diff;
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out[i*channels+1] = out[i*channels+1] + diff;
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}
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}
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static void gain_fade(const opus_val16 *in, opus_val16 *out, opus_val16 g1, opus_val16 g2,
|
|
int overlap48, int frame_size, int channels, const opus_val16 *window, opus_int32 Fs)
|
|
{
|
|
int i;
|
|
int inc;
|
|
int overlap;
|
|
int c;
|
|
inc = 48000/Fs;
|
|
overlap=overlap48/inc;
|
|
if (channels==1)
|
|
{
|
|
for (i=0;i<overlap;i++)
|
|
{
|
|
opus_val16 g, w;
|
|
w = MULT16_16_Q15(window[i*inc], window[i*inc]);
|
|
g = SHR32(MAC16_16(MULT16_16(w,g2),
|
|
Q15ONE-w, g1), 15);
|
|
out[i] = MULT16_16_Q15(g, in[i]);
|
|
}
|
|
} else {
|
|
for (i=0;i<overlap;i++)
|
|
{
|
|
opus_val16 g, w;
|
|
w = MULT16_16_Q15(window[i*inc], window[i*inc]);
|
|
g = SHR32(MAC16_16(MULT16_16(w,g2),
|
|
Q15ONE-w, g1), 15);
|
|
out[i*2] = MULT16_16_Q15(g, in[i*2]);
|
|
out[i*2+1] = MULT16_16_Q15(g, in[i*2+1]);
|
|
}
|
|
}
|
|
c=0;do {
|
|
for (i=overlap;i<frame_size;i++)
|
|
{
|
|
out[i*channels+c] = MULT16_16_Q15(g2, in[i*channels+c]);
|
|
}
|
|
}
|
|
while (++c<channels);
|
|
}
|
|
|
|
OpusEncoder *opus_encoder_create(opus_int32 Fs, int channels, int application, int *error)
|
|
{
|
|
int ret;
|
|
OpusEncoder *st;
|
|
if((Fs!=48000&&Fs!=24000&&Fs!=16000&&Fs!=12000&&Fs!=8000)||(channels!=1&&channels!=2)||
|
|
(application != OPUS_APPLICATION_VOIP && application != OPUS_APPLICATION_AUDIO
|
|
&& application != OPUS_APPLICATION_RESTRICTED_LOWDELAY))
|
|
{
|
|
if (error)
|
|
*error = OPUS_BAD_ARG;
|
|
return NULL;
|
|
}
|
|
st = (OpusEncoder *)opus_alloc(opus_encoder_get_size(channels));
|
|
if (st == NULL)
|
|
{
|
|
if (error)
|
|
*error = OPUS_ALLOC_FAIL;
|
|
return NULL;
|
|
}
|
|
ret = opus_encoder_init(st, Fs, channels, application);
|
|
if (error)
|
|
*error = ret;
|
|
if (ret != OPUS_OK)
|
|
{
|
|
opus_free(st);
|
|
st = NULL;
|
|
}
|
|
return st;
|
|
}
|
|
|
|
static opus_int32 user_bitrate_to_bitrate(OpusEncoder *st, int frame_size, int max_data_bytes)
|
|
{
|
|
if(!frame_size)frame_size=st->Fs/400;
|
|
if (st->user_bitrate_bps==OPUS_AUTO)
|
|
return 60*st->Fs/frame_size + st->Fs*st->channels;
|
|
else if (st->user_bitrate_bps==OPUS_BITRATE_MAX)
|
|
return max_data_bytes*8*st->Fs/frame_size;
|
|
else
|
|
return st->user_bitrate_bps;
|
|
}
|
|
|
|
#ifndef DISABLE_FLOAT_API
|
|
/* Don't use more than 60 ms for the frame size analysis */
|
|
#define MAX_DYNAMIC_FRAMESIZE 24
|
|
/* Estimates how much the bitrate will be boosted based on the sub-frame energy */
|
|
static float transient_boost(const float *E, const float *E_1, int LM, int maxM)
|
|
{
|
|
int i;
|
|
int M;
|
|
float sumE=0, sumE_1=0;
|
|
float metric;
|
|
|
|
M = IMIN(maxM, (1<<LM)+1);
|
|
for (i=0;i<M;i++)
|
|
{
|
|
sumE += E[i];
|
|
sumE_1 += E_1[i];
|
|
}
|
|
metric = sumE*sumE_1/(M*M);
|
|
/*if (LM==3)
|
|
printf("%f\n", metric);*/
|
|
/*return metric>10 ? 1 : 0;*/
|
|
/*return MAX16(0,1-exp(-.25*(metric-2.)));*/
|
|
return MIN16(1,(float)sqrt(MAX16(0,.05f*(metric-2))));
|
|
}
|
|
|
|
/* Viterbi decoding trying to find the best frame size combination using look-ahead
|
|
|
|
State numbering:
|
|
0: unused
|
|
1: 2.5 ms
|
|
2: 5 ms (#1)
|
|
3: 5 ms (#2)
|
|
4: 10 ms (#1)
|
|
5: 10 ms (#2)
|
|
6: 10 ms (#3)
|
|
7: 10 ms (#4)
|
|
8: 20 ms (#1)
|
|
9: 20 ms (#2)
|
|
10: 20 ms (#3)
|
|
11: 20 ms (#4)
|
|
12: 20 ms (#5)
|
|
13: 20 ms (#6)
|
|
14: 20 ms (#7)
|
|
15: 20 ms (#8)
|
|
*/
|
|
static int transient_viterbi(const float *E, const float *E_1, int N, int frame_cost, int rate)
|
|
{
|
|
int i;
|
|
float cost[MAX_DYNAMIC_FRAMESIZE][16];
|
|
int states[MAX_DYNAMIC_FRAMESIZE][16];
|
|
float best_cost;
|
|
int best_state;
|
|
float factor;
|
|
/* Take into account that we damp VBR in the 32 kb/s to 64 kb/s range. */
|
|
if (rate<80)
|
|
factor=0;
|
|
else if (rate>160)
|
|
factor=1;
|
|
else
|
|
factor = (rate-80.f)/80.f;
|
|
/* Makes variable framesize less aggressive at lower bitrates, but I can't
|
|
find any valid theoretical justification for this (other than it seems
|
|
to help) */
|
|
for (i=0;i<16;i++)
|
|
{
|
|
/* Impossible state */
|
|
states[0][i] = -1;
|
|
cost[0][i] = 1e10;
|
|
}
|
|
for (i=0;i<4;i++)
|
|
{
|
|
cost[0][1<<i] = (frame_cost + rate*(1<<i))*(1+factor*transient_boost(E, E_1, i, N+1));
|
|
states[0][1<<i] = i;
|
|
}
|
|
for (i=1;i<N;i++)
|
|
{
|
|
int j;
|
|
|
|
/* Follow continuations */
|
|
for (j=2;j<16;j++)
|
|
{
|
|
cost[i][j] = cost[i-1][j-1];
|
|
states[i][j] = j-1;
|
|
}
|
|
|
|
/* New frames */
|
|
for(j=0;j<4;j++)
|
|
{
|
|
int k;
|
|
float min_cost;
|
|
float curr_cost;
|
|
states[i][1<<j] = 1;
|
|
min_cost = cost[i-1][1];
|
|
for(k=1;k<4;k++)
|
|
{
|
|
float tmp = cost[i-1][(1<<(k+1))-1];
|
|
if (tmp < min_cost)
|
|
{
|
|
states[i][1<<j] = (1<<(k+1))-1;
|
|
min_cost = tmp;
|
|
}
|
|
}
|
|
curr_cost = (frame_cost + rate*(1<<j))*(1+factor*transient_boost(E+i, E_1+i, j, N-i+1));
|
|
cost[i][1<<j] = min_cost;
|
|
/* If part of the frame is outside the analysis window, only count part of the cost */
|
|
if (N-i < (1<<j))
|
|
cost[i][1<<j] += curr_cost*(float)(N-i)/(1<<j);
|
|
else
|
|
cost[i][1<<j] += curr_cost;
|
|
}
|
|
}
|
|
|
|
best_state=1;
|
|
best_cost = cost[N-1][1];
|
|
/* Find best end state (doesn't force a frame to end at N-1) */
|
|
for (i=2;i<16;i++)
|
|
{
|
|
if (cost[N-1][i]<best_cost)
|
|
{
|
|
best_cost = cost[N-1][i];
|
|
best_state = i;
|
|
}
|
|
}
|
|
|
|
/* Follow transitions back */
|
|
for (i=N-1;i>=0;i--)
|
|
{
|
|
/*printf("%d ", best_state);*/
|
|
best_state = states[i][best_state];
|
|
}
|
|
/*printf("%d\n", best_state);*/
|
|
return best_state;
|
|
}
|
|
|
|
int optimize_framesize(const opus_val16 *x, int len, int C, opus_int32 Fs,
|
|
int bitrate, opus_val16 tonality, float *mem, int buffering,
|
|
downmix_func downmix)
|
|
{
|
|
int N;
|
|
int i;
|
|
float e[MAX_DYNAMIC_FRAMESIZE+4];
|
|
float e_1[MAX_DYNAMIC_FRAMESIZE+3];
|
|
opus_val32 memx;
|
|
int bestLM=0;
|
|
int subframe;
|
|
int pos;
|
|
VARDECL(opus_val32, sub);
|
|
|
|
subframe = Fs/400;
|
|
ALLOC(sub, subframe, opus_val32);
|
|
e[0]=mem[0];
|
|
e_1[0]=1.f/(EPSILON+mem[0]);
|
|
if (buffering)
|
|
{
|
|
/* Consider the CELT delay when not in restricted-lowdelay */
|
|
/* We assume the buffering is between 2.5 and 5 ms */
|
|
int offset = 2*subframe - buffering;
|
|
celt_assert(offset>=0 && offset <= subframe);
|
|
x += C*offset;
|
|
len -= offset;
|
|
e[1]=mem[1];
|
|
e_1[1]=1.f/(EPSILON+mem[1]);
|
|
e[2]=mem[2];
|
|
e_1[2]=1.f/(EPSILON+mem[2]);
|
|
pos = 3;
|
|
} else {
|
|
pos=1;
|
|
}
|
|
N=IMIN(len/subframe, MAX_DYNAMIC_FRAMESIZE);
|
|
/* Just silencing a warning, it's really initialized later */
|
|
memx = 0;
|
|
for (i=0;i<N;i++)
|
|
{
|
|
float tmp;
|
|
opus_val32 tmpx;
|
|
int j;
|
|
tmp=EPSILON;
|
|
|
|
downmix(x, sub, subframe, i*subframe, 0, -2, C);
|
|
if (i==0)
|
|
memx = sub[0];
|
|
for (j=0;j<subframe;j++)
|
|
{
|
|
tmpx = sub[j];
|
|
tmp += (tmpx-memx)*(float)(tmpx-memx);
|
|
memx = tmpx;
|
|
}
|
|
e[i+pos] = tmp;
|
|
e_1[i+pos] = 1.f/tmp;
|
|
}
|
|
/* Hack to get 20 ms working with APPLICATION_AUDIO
|
|
The real problem is that the corresponding memory needs to use 1.5 ms
|
|
from this frame and 1 ms from the next frame */
|
|
e[i+pos] = e[i+pos-1];
|
|
if (buffering)
|
|
N=IMIN(MAX_DYNAMIC_FRAMESIZE, N+2);
|
|
bestLM = transient_viterbi(e, e_1, N, (int)((1.f+.5f*tonality)*(60*C+40)), bitrate/400);
|
|
mem[0] = e[1<<bestLM];
|
|
if (buffering)
|
|
{
|
|
mem[1] = e[(1<<bestLM)+1];
|
|
mem[2] = e[(1<<bestLM)+2];
|
|
}
|
|
return bestLM;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifndef DISABLE_FLOAT_API
|
|
#ifdef OPUS_FIXED_POINT
|
|
#define PCM2VAL(x) FLOAT2INT16(x)
|
|
#else
|
|
#define PCM2VAL(x) SCALEIN(x)
|
|
#endif
|
|
void downmix_float(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C)
|
|
{
|
|
const float *x;
|
|
opus_val32 scale;
|
|
int j;
|
|
x = (const float *)_x;
|
|
for (j=0;j<subframe;j++)
|
|
sub[j] = PCM2VAL(x[(j+offset)*C+c1]);
|
|
if (c2>-1)
|
|
{
|
|
for (j=0;j<subframe;j++)
|
|
sub[j] += PCM2VAL(x[(j+offset)*C+c2]);
|
|
} else if (c2==-2)
|
|
{
|
|
int c;
|
|
for (c=1;c<C;c++)
|
|
{
|
|
for (j=0;j<subframe;j++)
|
|
sub[j] += PCM2VAL(x[(j+offset)*C+c]);
|
|
}
|
|
}
|
|
#ifdef OPUS_FIXED_POINT
|
|
scale = (1<<SIG_SHIFT);
|
|
#else
|
|
scale = 1.f;
|
|
#endif
|
|
if (C==-2)
|
|
scale /= C;
|
|
else
|
|
scale /= 2;
|
|
for (j=0;j<subframe;j++)
|
|
sub[j] *= scale;
|
|
}
|
|
#endif
|
|
|
|
void downmix_int(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C)
|
|
{
|
|
const opus_int16 *x;
|
|
opus_val32 scale;
|
|
int j;
|
|
x = (const opus_int16 *)_x;
|
|
for (j=0;j<subframe;j++)
|
|
sub[j] = x[(j+offset)*C+c1];
|
|
if (c2>-1)
|
|
{
|
|
for (j=0;j<subframe;j++)
|
|
sub[j] += x[(j+offset)*C+c2];
|
|
} else if (c2==-2)
|
|
{
|
|
int c;
|
|
for (c=1;c<C;c++)
|
|
{
|
|
for (j=0;j<subframe;j++)
|
|
sub[j] += x[(j+offset)*C+c];
|
|
}
|
|
}
|
|
#ifdef OPUS_FIXED_POINT
|
|
scale = (1<<SIG_SHIFT);
|
|
#else
|
|
scale = 1.f/32768;
|
|
#endif
|
|
if (C==-2)
|
|
scale /= C;
|
|
else
|
|
scale /= 2;
|
|
for (j=0;j<subframe;j++)
|
|
sub[j] *= scale;
|
|
}
|
|
|
|
opus_int32 frame_size_select(opus_int32 frame_size, int variable_duration, opus_int32 Fs)
|
|
{
|
|
int new_size;
|
|
if (frame_size<Fs/400)
|
|
return -1;
|
|
if (variable_duration == OPUS_FRAMESIZE_ARG)
|
|
new_size = frame_size;
|
|
else if (variable_duration == OPUS_FRAMESIZE_VARIABLE)
|
|
new_size = Fs/50;
|
|
else if (variable_duration >= OPUS_FRAMESIZE_2_5_MS && variable_duration <= OPUS_FRAMESIZE_60_MS)
|
|
new_size = IMIN(3*Fs/50, (Fs/400)<<(variable_duration-OPUS_FRAMESIZE_2_5_MS));
|
|
else
|
|
return -1;
|
|
if (new_size>frame_size)
|
|
return -1;
|
|
if (400*new_size!=Fs && 200*new_size!=Fs && 100*new_size!=Fs &&
|
|
50*new_size!=Fs && 25*new_size!=Fs && 50*new_size!=3*Fs)
|
|
return -1;
|
|
return new_size;
|
|
}
|
|
|
|
opus_int32 compute_frame_size(const void *analysis_pcm, int frame_size,
|
|
int variable_duration, int C, opus_int32 Fs, int bitrate_bps,
|
|
int delay_compensation, downmix_func downmix
|
|
#ifndef DISABLE_FLOAT_API
|
|
, float *subframe_mem
|
|
#endif
|
|
)
|
|
{
|
|
#ifndef DISABLE_FLOAT_API
|
|
if (variable_duration == OPUS_FRAMESIZE_VARIABLE && frame_size >= Fs/200)
|
|
{
|
|
int LM = 3;
|
|
LM = optimize_framesize(analysis_pcm, frame_size, C, Fs, bitrate_bps,
|
|
0, subframe_mem, delay_compensation, downmix);
|
|
while ((Fs/400<<LM)>frame_size)
|
|
LM--;
|
|
frame_size = (Fs/400<<LM);
|
|
} else
|
|
#endif
|
|
{
|
|
frame_size = frame_size_select(frame_size, variable_duration, Fs);
|
|
}
|
|
if (frame_size<0)
|
|
return -1;
|
|
return frame_size;
|
|
}
|
|
|
|
opus_val16 compute_stereo_width(const opus_val16 *pcm, int frame_size, opus_int32 Fs, StereoWidthState *mem)
|
|
{
|
|
opus_val16 corr;
|
|
opus_val16 ldiff;
|
|
opus_val16 width;
|
|
opus_val32 xx, xy, yy;
|
|
opus_val16 sqrt_xx, sqrt_yy;
|
|
opus_val16 qrrt_xx, qrrt_yy;
|
|
int frame_rate;
|
|
int i;
|
|
opus_val16 short_alpha;
|
|
|
|
frame_rate = Fs/frame_size;
|
|
short_alpha = Q15ONE - 25*Q15ONE/IMAX(50,frame_rate);
|
|
xx=xy=yy=0;
|
|
for (i=0;i<frame_size;i+=4)
|
|
{
|
|
opus_val32 pxx=0;
|
|
opus_val32 pxy=0;
|
|
opus_val32 pyy=0;
|
|
opus_val16 x, y;
|
|
x = pcm[2*i];
|
|
y = pcm[2*i+1];
|
|
pxx = SHR32(MULT16_16(x,x),2);
|
|
pxy = SHR32(MULT16_16(x,y),2);
|
|
pyy = SHR32(MULT16_16(y,y),2);
|
|
x = pcm[2*i+2];
|
|
y = pcm[2*i+3];
|
|
pxx += SHR32(MULT16_16(x,x),2);
|
|
pxy += SHR32(MULT16_16(x,y),2);
|
|
pyy += SHR32(MULT16_16(y,y),2);
|
|
x = pcm[2*i+4];
|
|
y = pcm[2*i+5];
|
|
pxx += SHR32(MULT16_16(x,x),2);
|
|
pxy += SHR32(MULT16_16(x,y),2);
|
|
pyy += SHR32(MULT16_16(y,y),2);
|
|
x = pcm[2*i+6];
|
|
y = pcm[2*i+7];
|
|
pxx += SHR32(MULT16_16(x,x),2);
|
|
pxy += SHR32(MULT16_16(x,y),2);
|
|
pyy += SHR32(MULT16_16(y,y),2);
|
|
|
|
xx += SHR32(pxx, 10);
|
|
xy += SHR32(pxy, 10);
|
|
yy += SHR32(pyy, 10);
|
|
}
|
|
mem->XX += MULT16_32_Q15(short_alpha, xx-mem->XX);
|
|
mem->XY += MULT16_32_Q15(short_alpha, xy-mem->XY);
|
|
mem->YY += MULT16_32_Q15(short_alpha, yy-mem->YY);
|
|
mem->XX = MAX32(0, mem->XX);
|
|
mem->XY = MAX32(0, mem->XY);
|
|
mem->YY = MAX32(0, mem->YY);
|
|
if (MAX32(mem->XX, mem->YY)>QCONST16(8e-4f, 18))
|
|
{
|
|
sqrt_xx = celt_sqrt(mem->XX);
|
|
sqrt_yy = celt_sqrt(mem->YY);
|
|
qrrt_xx = celt_sqrt(sqrt_xx);
|
|
qrrt_yy = celt_sqrt(sqrt_yy);
|
|
/* Inter-channel correlation */
|
|
mem->XY = MIN32(mem->XY, sqrt_xx*sqrt_yy);
|
|
corr = SHR32(frac_div32(mem->XY,EPSILON+MULT16_16(sqrt_xx,sqrt_yy)),16);
|
|
/* Approximate loudness difference */
|
|
ldiff = Q15ONE*ABS16(qrrt_xx-qrrt_yy)/(EPSILON+qrrt_xx+qrrt_yy);
|
|
width = MULT16_16_Q15(celt_sqrt(QCONST32(1.f,30)-MULT16_16(corr,corr)), ldiff);
|
|
/* Smoothing over one second */
|
|
mem->smoothed_width += (width-mem->smoothed_width)/frame_rate;
|
|
/* Peak follower */
|
|
mem->max_follower = MAX16(mem->max_follower-QCONST16(.02f,15)/frame_rate, mem->smoothed_width);
|
|
} else {
|
|
width = 0;
|
|
corr=Q15ONE;
|
|
ldiff=0;
|
|
}
|
|
/*printf("%f %f %f %f %f ", corr/(float)Q15ONE, ldiff/(float)Q15ONE, width/(float)Q15ONE, mem->smoothed_width/(float)Q15ONE, mem->max_follower/(float)Q15ONE);*/
|
|
return EXTRACT16(MIN32(Q15ONE,20*mem->max_follower));
|
|
}
|
|
|
|
opus_int32 opus_encode_native(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
|
|
unsigned char *data, opus_int32 out_data_bytes, int lsb_depth,
|
|
const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2, int analysis_channels, downmix_func downmix)
|
|
{
|
|
void *silk_enc;
|
|
CELTEncoder *celt_enc;
|
|
int i;
|
|
int ret=0;
|
|
opus_int32 nBytes;
|
|
ec_enc enc;
|
|
int bytes_target;
|
|
int prefill=0;
|
|
int start_band = 0;
|
|
int redundancy = 0;
|
|
int redundancy_bytes = 0; /* Number of bytes to use for redundancy frame */
|
|
int celt_to_silk = 0;
|
|
VARDECL(opus_val16, pcm_buf);
|
|
int nb_compr_bytes;
|
|
int to_celt = 0;
|
|
opus_uint32 redundant_rng = 0;
|
|
int cutoff_Hz, hp_freq_smth1;
|
|
int voice_est; /* Probability of voice in Q7 */
|
|
opus_int32 equiv_rate;
|
|
int delay_compensation;
|
|
int frame_rate;
|
|
opus_int32 max_rate; /* Max bitrate we're allowed to use */
|
|
int curr_bandwidth;
|
|
opus_val16 HB_gain;
|
|
opus_int32 max_data_bytes; /* Max number of bytes we're allowed to use */
|
|
int total_buffer;
|
|
opus_val16 stereo_width;
|
|
const CELTMode *celt_mode;
|
|
AnalysisInfo analysis_info;
|
|
int analysis_read_pos_bak=-1;
|
|
int analysis_read_subframe_bak=-1;
|
|
VARDECL(opus_val16, tmp_prefill);
|
|
|
|
ALLOC_STACK;
|
|
|
|
max_data_bytes = IMIN(1276, out_data_bytes);
|
|
|
|
st->rangeFinal = 0;
|
|
if ((!st->variable_duration && 400*frame_size != st->Fs && 200*frame_size != st->Fs && 100*frame_size != st->Fs &&
|
|
50*frame_size != st->Fs && 25*frame_size != st->Fs && 50*frame_size != 3*st->Fs)
|
|
|| (400*frame_size < st->Fs)
|
|
|| max_data_bytes<=0
|
|
)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_BAD_ARG;
|
|
}
|
|
silk_enc = (char*)st+st->silk_enc_offset;
|
|
celt_enc = (CELTEncoder*)((char*)st+st->celt_enc_offset);
|
|
if (st->application == OPUS_APPLICATION_RESTRICTED_LOWDELAY)
|
|
delay_compensation = 0;
|
|
else
|
|
delay_compensation = st->delay_compensation;
|
|
|
|
lsb_depth = IMIN(lsb_depth, st->lsb_depth);
|
|
|
|
analysis_info.valid = 0;
|
|
celt_encoder_ctl(celt_enc, CELT_GET_MODE(&celt_mode));
|
|
#ifndef DISABLE_FLOAT_API
|
|
#ifdef OPUS_FIXED_POINT
|
|
if (st->silk_mode.complexity >= 10 && st->Fs==48000)
|
|
#else
|
|
if (st->silk_mode.complexity >= 7 && st->Fs==48000)
|
|
#endif
|
|
{
|
|
analysis_read_pos_bak = st->analysis.read_pos;
|
|
analysis_read_subframe_bak = st->analysis.read_subframe;
|
|
run_analysis(&st->analysis, celt_mode, analysis_pcm, analysis_size, frame_size,
|
|
c1, c2, analysis_channels, st->Fs,
|
|
lsb_depth, downmix, &analysis_info);
|
|
}
|
|
#endif
|
|
|
|
st->voice_ratio = -1;
|
|
|
|
#ifndef DISABLE_FLOAT_API
|
|
st->detected_bandwidth = 0;
|
|
if (analysis_info.valid)
|
|
{
|
|
int analysis_bandwidth;
|
|
if (st->signal_type == OPUS_AUTO)
|
|
st->voice_ratio = (int)floor(.5+100*(1-analysis_info.music_prob));
|
|
|
|
analysis_bandwidth = analysis_info.bandwidth;
|
|
if (analysis_bandwidth<=12)
|
|
st->detected_bandwidth = OPUS_BANDWIDTH_NARROWBAND;
|
|
else if (analysis_bandwidth<=14)
|
|
st->detected_bandwidth = OPUS_BANDWIDTH_MEDIUMBAND;
|
|
else if (analysis_bandwidth<=16)
|
|
st->detected_bandwidth = OPUS_BANDWIDTH_WIDEBAND;
|
|
else if (analysis_bandwidth<=18)
|
|
st->detected_bandwidth = OPUS_BANDWIDTH_SUPERWIDEBAND;
|
|
else
|
|
st->detected_bandwidth = OPUS_BANDWIDTH_FULLBAND;
|
|
}
|
|
#endif
|
|
|
|
if (st->channels==2 && st->force_channels!=1)
|
|
stereo_width = compute_stereo_width(pcm, frame_size, st->Fs, &st->width_mem);
|
|
else
|
|
stereo_width = 0;
|
|
total_buffer = delay_compensation;
|
|
st->bitrate_bps = user_bitrate_to_bitrate(st, frame_size, max_data_bytes);
|
|
|
|
frame_rate = st->Fs/frame_size;
|
|
if (max_data_bytes<3 || st->bitrate_bps < 3*frame_rate*8
|
|
|| (frame_rate<50 && (max_data_bytes*frame_rate<300 || st->bitrate_bps < 2400)))
|
|
{
|
|
/*If the space is too low to do something useful, emit 'PLC' frames.*/
|
|
int tocmode = st->mode;
|
|
int bw = st->bandwidth == 0 ? OPUS_BANDWIDTH_NARROWBAND : st->bandwidth;
|
|
if (tocmode==0)
|
|
tocmode = MODE_SILK_ONLY;
|
|
if (frame_rate>100)
|
|
tocmode = MODE_CELT_ONLY;
|
|
if (frame_rate < 50)
|
|
tocmode = MODE_SILK_ONLY;
|
|
if(tocmode==MODE_SILK_ONLY&&bw>OPUS_BANDWIDTH_WIDEBAND)
|
|
bw=OPUS_BANDWIDTH_WIDEBAND;
|
|
else if (tocmode==MODE_CELT_ONLY&&bw==OPUS_BANDWIDTH_MEDIUMBAND)
|
|
bw=OPUS_BANDWIDTH_NARROWBAND;
|
|
else if (bw<=OPUS_BANDWIDTH_SUPERWIDEBAND)
|
|
bw=OPUS_BANDWIDTH_SUPERWIDEBAND;
|
|
data[0] = gen_toc(tocmode, frame_rate, bw, st->stream_channels);
|
|
RESTORE_STACK;
|
|
return 1;
|
|
}
|
|
if (!st->use_vbr)
|
|
{
|
|
int cbrBytes;
|
|
cbrBytes = IMIN( (st->bitrate_bps + 4*frame_rate)/(8*frame_rate) , max_data_bytes);
|
|
st->bitrate_bps = cbrBytes * (8*frame_rate);
|
|
max_data_bytes = cbrBytes;
|
|
}
|
|
max_rate = frame_rate*max_data_bytes*8;
|
|
|
|
/* Equivalent 20-ms rate for mode/channel/bandwidth decisions */
|
|
equiv_rate = st->bitrate_bps - (40*st->channels+20)*(st->Fs/frame_size - 50);
|
|
|
|
if (st->signal_type == OPUS_SIGNAL_VOICE)
|
|
voice_est = 127;
|
|
else if (st->signal_type == OPUS_SIGNAL_MUSIC)
|
|
voice_est = 0;
|
|
else if (st->voice_ratio >= 0)
|
|
{
|
|
voice_est = st->voice_ratio*327>>8;
|
|
/* For AUDIO, never be more than 90% confident of having speech */
|
|
if (st->application == OPUS_APPLICATION_AUDIO)
|
|
voice_est = IMIN(voice_est, 115);
|
|
} else if (st->application == OPUS_APPLICATION_VOIP)
|
|
voice_est = 115;
|
|
else
|
|
voice_est = 48;
|
|
|
|
if (st->force_channels!=OPUS_AUTO && st->channels == 2)
|
|
{
|
|
st->stream_channels = st->force_channels;
|
|
} else {
|
|
#ifdef FUZZING
|
|
/* Random mono/stereo decision */
|
|
if (st->channels == 2 && (rand()&0x1F)==0)
|
|
st->stream_channels = 3-st->stream_channels;
|
|
#else
|
|
/* Rate-dependent mono-stereo decision */
|
|
if (st->channels == 2)
|
|
{
|
|
opus_int32 stereo_threshold;
|
|
stereo_threshold = stereo_music_threshold + ((voice_est*voice_est*(stereo_voice_threshold-stereo_music_threshold))>>14);
|
|
if (st->stream_channels == 2)
|
|
stereo_threshold -= 1000;
|
|
else
|
|
stereo_threshold += 1000;
|
|
st->stream_channels = (equiv_rate > stereo_threshold) ? 2 : 1;
|
|
} else {
|
|
st->stream_channels = st->channels;
|
|
}
|
|
#endif
|
|
}
|
|
equiv_rate = st->bitrate_bps - (40*st->stream_channels+20)*(st->Fs/frame_size - 50);
|
|
|
|
/* Mode selection depending on application and signal type */
|
|
if (st->application == OPUS_APPLICATION_RESTRICTED_LOWDELAY)
|
|
{
|
|
st->mode = MODE_CELT_ONLY;
|
|
} else if (st->user_forced_mode == OPUS_AUTO)
|
|
{
|
|
#ifdef FUZZING
|
|
/* Random mode switching */
|
|
if ((rand()&0xF)==0)
|
|
{
|
|
if ((rand()&0x1)==0)
|
|
st->mode = MODE_CELT_ONLY;
|
|
else
|
|
st->mode = MODE_SILK_ONLY;
|
|
} else {
|
|
if (st->prev_mode==MODE_CELT_ONLY)
|
|
st->mode = MODE_CELT_ONLY;
|
|
else
|
|
st->mode = MODE_SILK_ONLY;
|
|
}
|
|
#else
|
|
opus_int32 mode_voice, mode_music;
|
|
opus_int32 threshold;
|
|
|
|
/* Interpolate based on stereo width */
|
|
mode_voice = (opus_int32)(MULT16_32_Q15(Q15ONE-stereo_width,mode_thresholds[0][0])
|
|
+ MULT16_32_Q15(stereo_width,mode_thresholds[1][0]));
|
|
mode_music = (opus_int32)(MULT16_32_Q15(Q15ONE-stereo_width,mode_thresholds[1][1])
|
|
+ MULT16_32_Q15(stereo_width,mode_thresholds[1][1]));
|
|
/* Interpolate based on speech/music probability */
|
|
threshold = mode_music + ((voice_est*voice_est*(mode_voice-mode_music))>>14);
|
|
/* Bias towards SILK for VoIP because of some useful features */
|
|
if (st->application == OPUS_APPLICATION_VOIP)
|
|
threshold += 8000;
|
|
|
|
/*printf("%f %d\n", stereo_width/(float)Q15ONE, threshold);*/
|
|
/* Hysteresis */
|
|
if (st->prev_mode == MODE_CELT_ONLY)
|
|
threshold -= 4000;
|
|
else if (st->prev_mode>0)
|
|
threshold += 4000;
|
|
|
|
st->mode = (equiv_rate >= threshold) ? MODE_CELT_ONLY: MODE_SILK_ONLY;
|
|
|
|
/* When FEC is enabled and there's enough packet loss, use SILK */
|
|
if (st->silk_mode.useInBandFEC && st->silk_mode.packetLossPercentage > (128-voice_est)>>4)
|
|
st->mode = MODE_SILK_ONLY;
|
|
/* When encoding voice and DTX is enabled, set the encoder to SILK mode (at least for now) */
|
|
if (st->silk_mode.useDTX && voice_est > 100)
|
|
st->mode = MODE_SILK_ONLY;
|
|
#endif
|
|
} else {
|
|
st->mode = st->user_forced_mode;
|
|
}
|
|
|
|
/* Override the chosen mode to make sure we meet the requested frame size */
|
|
if (st->mode != MODE_CELT_ONLY && frame_size < st->Fs/100)
|
|
st->mode = MODE_CELT_ONLY;
|
|
if (st->lfe)
|
|
st->mode = MODE_CELT_ONLY;
|
|
/* If max_data_bytes represents less than 8 kb/s, switch to CELT-only mode */
|
|
if (max_data_bytes < (frame_rate > 50 ? 12000 : 8000)*frame_size / (st->Fs * 8))
|
|
st->mode = MODE_CELT_ONLY;
|
|
|
|
if (st->stream_channels == 1 && st->prev_channels ==2 && st->silk_mode.toMono==0
|
|
&& st->mode != MODE_CELT_ONLY && st->prev_mode != MODE_CELT_ONLY)
|
|
{
|
|
/* Delay stereo->mono transition by two frames so that SILK can do a smooth downmix */
|
|
st->silk_mode.toMono = 1;
|
|
st->stream_channels = 2;
|
|
} else {
|
|
st->silk_mode.toMono = 0;
|
|
}
|
|
|
|
if (st->prev_mode > 0 &&
|
|
((st->mode != MODE_CELT_ONLY && st->prev_mode == MODE_CELT_ONLY) ||
|
|
(st->mode == MODE_CELT_ONLY && st->prev_mode != MODE_CELT_ONLY)))
|
|
{
|
|
redundancy = 1;
|
|
celt_to_silk = (st->mode != MODE_CELT_ONLY);
|
|
if (!celt_to_silk)
|
|
{
|
|
/* Switch to SILK/hybrid if frame size is 10 ms or more*/
|
|
if (frame_size >= st->Fs/100)
|
|
{
|
|
st->mode = st->prev_mode;
|
|
to_celt = 1;
|
|
} else {
|
|
redundancy=0;
|
|
}
|
|
}
|
|
}
|
|
/* For the first frame at a new SILK bandwidth */
|
|
if (st->silk_bw_switch)
|
|
{
|
|
redundancy = 1;
|
|
celt_to_silk = 1;
|
|
st->silk_bw_switch = 0;
|
|
prefill=1;
|
|
}
|
|
|
|
if (redundancy)
|
|
{
|
|
/* Fair share of the max size allowed */
|
|
redundancy_bytes = IMIN(257, max_data_bytes*(opus_int32)(st->Fs/200)/(frame_size+st->Fs/200));
|
|
/* For VBR, target the actual bitrate (subject to the limit above) */
|
|
if (st->use_vbr)
|
|
redundancy_bytes = IMIN(redundancy_bytes, st->bitrate_bps/1600);
|
|
}
|
|
|
|
if (st->mode != MODE_CELT_ONLY && st->prev_mode == MODE_CELT_ONLY)
|
|
{
|
|
silk_EncControlStruct dummy;
|
|
silk_InitEncoder( silk_enc, st->arch, &dummy);
|
|
prefill=1;
|
|
}
|
|
|
|
/* Automatic (rate-dependent) bandwidth selection */
|
|
if (st->mode == MODE_CELT_ONLY || st->first || st->silk_mode.allowBandwidthSwitch)
|
|
{
|
|
const opus_int32 *voice_bandwidth_thresholds, *music_bandwidth_thresholds;
|
|
opus_int32 bandwidth_thresholds[8];
|
|
int bandwidth = OPUS_BANDWIDTH_FULLBAND;
|
|
opus_int32 equiv_rate2;
|
|
|
|
equiv_rate2 = equiv_rate;
|
|
if (st->mode != MODE_CELT_ONLY)
|
|
{
|
|
/* Adjust the threshold +/- 10% depending on complexity */
|
|
equiv_rate2 = equiv_rate2 * (45+st->silk_mode.complexity)/50;
|
|
/* CBR is less efficient by ~1 kb/s */
|
|
if (!st->use_vbr)
|
|
equiv_rate2 -= 1000;
|
|
}
|
|
if (st->channels==2 && st->force_channels!=1)
|
|
{
|
|
voice_bandwidth_thresholds = stereo_voice_bandwidth_thresholds;
|
|
music_bandwidth_thresholds = stereo_music_bandwidth_thresholds;
|
|
} else {
|
|
voice_bandwidth_thresholds = mono_voice_bandwidth_thresholds;
|
|
music_bandwidth_thresholds = mono_music_bandwidth_thresholds;
|
|
}
|
|
/* Interpolate bandwidth thresholds depending on voice estimation */
|
|
for (i=0;i<8;i++)
|
|
{
|
|
bandwidth_thresholds[i] = music_bandwidth_thresholds[i]
|
|
+ ((voice_est*voice_est*(voice_bandwidth_thresholds[i]-music_bandwidth_thresholds[i]))>>14);
|
|
}
|
|
do {
|
|
int threshold, hysteresis;
|
|
threshold = bandwidth_thresholds[2*(bandwidth-OPUS_BANDWIDTH_MEDIUMBAND)];
|
|
hysteresis = bandwidth_thresholds[2*(bandwidth-OPUS_BANDWIDTH_MEDIUMBAND)+1];
|
|
if (!st->first)
|
|
{
|
|
if (st->bandwidth >= bandwidth)
|
|
threshold -= hysteresis;
|
|
else
|
|
threshold += hysteresis;
|
|
}
|
|
if (equiv_rate2 >= threshold)
|
|
break;
|
|
} while (--bandwidth>OPUS_BANDWIDTH_NARROWBAND);
|
|
st->bandwidth = bandwidth;
|
|
/* Prevents any transition to SWB/FB until the SILK layer has fully
|
|
switched to WB mode and turned the variable LP filter off */
|
|
if (!st->first && st->mode != MODE_CELT_ONLY && !st->silk_mode.inWBmodeWithoutVariableLP && st->bandwidth > OPUS_BANDWIDTH_WIDEBAND)
|
|
st->bandwidth = OPUS_BANDWIDTH_WIDEBAND;
|
|
}
|
|
|
|
if (st->bandwidth>st->max_bandwidth)
|
|
st->bandwidth = st->max_bandwidth;
|
|
|
|
if (st->user_bandwidth != OPUS_AUTO)
|
|
st->bandwidth = st->user_bandwidth;
|
|
|
|
/* This prevents us from using hybrid at unsafe CBR/max rates */
|
|
if (st->mode != MODE_CELT_ONLY && max_rate < 15000)
|
|
{
|
|
st->bandwidth = IMIN(st->bandwidth, OPUS_BANDWIDTH_WIDEBAND);
|
|
}
|
|
|
|
/* Prevents Opus from wasting bits on frequencies that are above
|
|
the Nyquist rate of the input signal */
|
|
if (st->Fs <= 24000 && st->bandwidth > OPUS_BANDWIDTH_SUPERWIDEBAND)
|
|
st->bandwidth = OPUS_BANDWIDTH_SUPERWIDEBAND;
|
|
if (st->Fs <= 16000 && st->bandwidth > OPUS_BANDWIDTH_WIDEBAND)
|
|
st->bandwidth = OPUS_BANDWIDTH_WIDEBAND;
|
|
if (st->Fs <= 12000 && st->bandwidth > OPUS_BANDWIDTH_MEDIUMBAND)
|
|
st->bandwidth = OPUS_BANDWIDTH_MEDIUMBAND;
|
|
if (st->Fs <= 8000 && st->bandwidth > OPUS_BANDWIDTH_NARROWBAND)
|
|
st->bandwidth = OPUS_BANDWIDTH_NARROWBAND;
|
|
#ifndef DISABLE_FLOAT_API
|
|
/* Use detected bandwidth to reduce the encoded bandwidth. */
|
|
if (st->detected_bandwidth && st->user_bandwidth == OPUS_AUTO)
|
|
{
|
|
int min_detected_bandwidth;
|
|
/* Makes bandwidth detection more conservative just in case the detector
|
|
gets it wrong when we could have coded a high bandwidth transparently.
|
|
When operating in SILK/hybrid mode, we don't go below wideband to avoid
|
|
more complicated switches that require redundancy. */
|
|
if (equiv_rate <= 18000*st->stream_channels && st->mode == MODE_CELT_ONLY)
|
|
min_detected_bandwidth = OPUS_BANDWIDTH_NARROWBAND;
|
|
else if (equiv_rate <= 24000*st->stream_channels && st->mode == MODE_CELT_ONLY)
|
|
min_detected_bandwidth = OPUS_BANDWIDTH_MEDIUMBAND;
|
|
else if (equiv_rate <= 30000*st->stream_channels)
|
|
min_detected_bandwidth = OPUS_BANDWIDTH_WIDEBAND;
|
|
else if (equiv_rate <= 44000*st->stream_channels)
|
|
min_detected_bandwidth = OPUS_BANDWIDTH_SUPERWIDEBAND;
|
|
else
|
|
min_detected_bandwidth = OPUS_BANDWIDTH_FULLBAND;
|
|
|
|
st->detected_bandwidth = IMAX(st->detected_bandwidth, min_detected_bandwidth);
|
|
st->bandwidth = IMIN(st->bandwidth, st->detected_bandwidth);
|
|
}
|
|
#endif
|
|
celt_encoder_ctl(celt_enc, OPUS_SET_LSB_DEPTH(lsb_depth));
|
|
|
|
/* CELT mode doesn't support mediumband, use wideband instead */
|
|
if (st->mode == MODE_CELT_ONLY && st->bandwidth == OPUS_BANDWIDTH_MEDIUMBAND)
|
|
st->bandwidth = OPUS_BANDWIDTH_WIDEBAND;
|
|
if (st->lfe)
|
|
st->bandwidth = OPUS_BANDWIDTH_NARROWBAND;
|
|
|
|
/* Can't support higher than wideband for >20 ms frames */
|
|
if (frame_size > st->Fs/50 && (st->mode == MODE_CELT_ONLY || st->bandwidth > OPUS_BANDWIDTH_WIDEBAND))
|
|
{
|
|
VARDECL(unsigned char, tmp_data);
|
|
int nb_frames;
|
|
int bak_mode, bak_bandwidth, bak_channels, bak_to_mono;
|
|
VARDECL(OpusRepacketizer, rp);
|
|
opus_int32 bytes_per_frame;
|
|
opus_int32 repacketize_len;
|
|
|
|
#ifndef DISABLE_FLOAT_API
|
|
if (analysis_read_pos_bak!= -1)
|
|
{
|
|
st->analysis.read_pos = analysis_read_pos_bak;
|
|
st->analysis.read_subframe = analysis_read_subframe_bak;
|
|
}
|
|
#endif
|
|
|
|
nb_frames = frame_size > st->Fs/25 ? 3 : 2;
|
|
bytes_per_frame = IMIN(1276,(out_data_bytes-3)/nb_frames);
|
|
|
|
ALLOC(tmp_data, nb_frames*bytes_per_frame, unsigned char);
|
|
|
|
ALLOC(rp, 1, OpusRepacketizer);
|
|
opus_repacketizer_init(rp);
|
|
|
|
bak_mode = st->user_forced_mode;
|
|
bak_bandwidth = st->user_bandwidth;
|
|
bak_channels = st->force_channels;
|
|
|
|
st->user_forced_mode = st->mode;
|
|
st->user_bandwidth = st->bandwidth;
|
|
st->force_channels = st->stream_channels;
|
|
bak_to_mono = st->silk_mode.toMono;
|
|
|
|
if (bak_to_mono)
|
|
st->force_channels = 1;
|
|
else
|
|
st->prev_channels = st->stream_channels;
|
|
for (i=0;i<nb_frames;i++)
|
|
{
|
|
int tmp_len;
|
|
st->silk_mode.toMono = 0;
|
|
/* When switching from SILK/Hybrid to CELT, only ask for a switch at the last frame */
|
|
if (to_celt && i==nb_frames-1)
|
|
st->user_forced_mode = MODE_CELT_ONLY;
|
|
tmp_len = opus_encode_native(st, pcm+i*(st->channels*st->Fs/50), st->Fs/50,
|
|
tmp_data+i*bytes_per_frame, bytes_per_frame, lsb_depth,
|
|
NULL, 0, c1, c2, analysis_channels, downmix);
|
|
if (tmp_len<0)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_INTERNAL_ERROR;
|
|
}
|
|
ret = opus_repacketizer_cat(rp, tmp_data+i*bytes_per_frame, tmp_len);
|
|
if (ret<0)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_INTERNAL_ERROR;
|
|
}
|
|
}
|
|
if (st->use_vbr)
|
|
repacketize_len = out_data_bytes;
|
|
else
|
|
repacketize_len = IMIN(3*st->bitrate_bps/(3*8*50/nb_frames), out_data_bytes);
|
|
ret = opus_repacketizer_out_range_impl(rp, 0, nb_frames, data, repacketize_len, 0, !st->use_vbr);
|
|
if (ret<0)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_INTERNAL_ERROR;
|
|
}
|
|
st->user_forced_mode = bak_mode;
|
|
st->user_bandwidth = bak_bandwidth;
|
|
st->force_channels = bak_channels;
|
|
st->silk_mode.toMono = bak_to_mono;
|
|
RESTORE_STACK;
|
|
return ret;
|
|
}
|
|
curr_bandwidth = st->bandwidth;
|
|
|
|
/* Chooses the appropriate mode for speech
|
|
*NEVER* switch to/from CELT-only mode here as this will invalidate some assumptions */
|
|
if (st->mode == MODE_SILK_ONLY && curr_bandwidth > OPUS_BANDWIDTH_WIDEBAND)
|
|
st->mode = MODE_HYBRID;
|
|
if (st->mode == MODE_HYBRID && curr_bandwidth <= OPUS_BANDWIDTH_WIDEBAND)
|
|
st->mode = MODE_SILK_ONLY;
|
|
|
|
/* printf("%d %d %d %d\n", st->bitrate_bps, st->stream_channels, st->mode, curr_bandwidth); */
|
|
bytes_target = IMIN(max_data_bytes-redundancy_bytes, st->bitrate_bps * frame_size / (st->Fs * 8)) - 1;
|
|
|
|
data += 1;
|
|
|
|
ec_enc_init(&enc, data, max_data_bytes-1);
|
|
|
|
ALLOC(pcm_buf, (total_buffer+frame_size)*st->channels, opus_val16);
|
|
for (i=0;i<total_buffer*st->channels;i++)
|
|
pcm_buf[i] = st->delay_buffer[(st->encoder_buffer-total_buffer)*st->channels+i];
|
|
|
|
if (st->mode == MODE_CELT_ONLY)
|
|
hp_freq_smth1 = silk_LSHIFT( silk_lin2log( VARIABLE_HP_MIN_CUTOFF_HZ ), 8 );
|
|
else
|
|
hp_freq_smth1 = ((silk_encoder*)silk_enc)->state_Fxx[0].sCmn.variable_HP_smth1_Q15;
|
|
|
|
st->variable_HP_smth2_Q15 = silk_SMLAWB( st->variable_HP_smth2_Q15,
|
|
hp_freq_smth1 - st->variable_HP_smth2_Q15, SILK_FIX_CONST( VARIABLE_HP_SMTH_COEF2, 16 ) );
|
|
|
|
/* convert from log scale to Hertz */
|
|
cutoff_Hz = silk_log2lin( silk_RSHIFT( st->variable_HP_smth2_Q15, 8 ) );
|
|
|
|
if (st->application == OPUS_APPLICATION_VOIP)
|
|
{
|
|
hp_cutoff(pcm, cutoff_Hz, &pcm_buf[total_buffer*st->channels], st->hp_mem, frame_size, st->channels, st->Fs);
|
|
} else {
|
|
dc_reject(pcm, 3, &pcm_buf[total_buffer*st->channels], st->hp_mem, frame_size, st->channels, st->Fs);
|
|
}
|
|
|
|
|
|
|
|
/* SILK processing */
|
|
HB_gain = Q15ONE;
|
|
if (st->mode != MODE_CELT_ONLY)
|
|
{
|
|
opus_int32 total_bitRate, celt_rate;
|
|
#ifdef OPUS_FIXED_POINT
|
|
const opus_int16 *pcm_silk;
|
|
#else
|
|
VARDECL(opus_int16, pcm_silk);
|
|
ALLOC(pcm_silk, st->channels*frame_size, opus_int16);
|
|
#endif
|
|
|
|
/* Distribute bits between SILK and CELT */
|
|
total_bitRate = 8 * bytes_target * frame_rate;
|
|
if( st->mode == MODE_HYBRID ) {
|
|
int HB_gain_ref;
|
|
/* Base rate for SILK */
|
|
st->silk_mode.bitRate = st->stream_channels * ( 5000 + 1000 * ( st->Fs == 100 * frame_size ) );
|
|
if( curr_bandwidth == OPUS_BANDWIDTH_SUPERWIDEBAND ) {
|
|
/* SILK gets 2/3 of the remaining bits */
|
|
st->silk_mode.bitRate += ( total_bitRate - st->silk_mode.bitRate ) * 2 / 3;
|
|
} else { /* FULLBAND */
|
|
/* SILK gets 3/5 of the remaining bits */
|
|
st->silk_mode.bitRate += ( total_bitRate - st->silk_mode.bitRate ) * 3 / 5;
|
|
}
|
|
/* Don't let SILK use more than 80% */
|
|
if( st->silk_mode.bitRate > total_bitRate * 4/5 ) {
|
|
st->silk_mode.bitRate = total_bitRate * 4/5;
|
|
}
|
|
if (!st->energy_masking)
|
|
{
|
|
/* Increasingly attenuate high band when it gets allocated fewer bits */
|
|
celt_rate = total_bitRate - st->silk_mode.bitRate;
|
|
HB_gain_ref = (curr_bandwidth == OPUS_BANDWIDTH_SUPERWIDEBAND) ? 3000 : 3600;
|
|
HB_gain = SHL32((opus_val32)celt_rate, 9) / SHR32((opus_val32)celt_rate + st->stream_channels * HB_gain_ref, 6);
|
|
HB_gain = HB_gain < Q15ONE*6/7 ? HB_gain + Q15ONE/7 : Q15ONE;
|
|
}
|
|
} else {
|
|
/* SILK gets all bits */
|
|
st->silk_mode.bitRate = total_bitRate;
|
|
}
|
|
|
|
/* Surround masking for SILK */
|
|
if (st->energy_masking && st->use_vbr && !st->lfe)
|
|
{
|
|
opus_val32 mask_sum=0;
|
|
opus_val16 masking_depth;
|
|
opus_int32 rate_offset;
|
|
int c;
|
|
int end = 17;
|
|
opus_int16 srate = 16000;
|
|
if (st->bandwidth == OPUS_BANDWIDTH_NARROWBAND)
|
|
{
|
|
end = 13;
|
|
srate = 8000;
|
|
} else if (st->bandwidth == OPUS_BANDWIDTH_MEDIUMBAND)
|
|
{
|
|
end = 15;
|
|
srate = 12000;
|
|
}
|
|
for (c=0;c<st->channels;c++)
|
|
{
|
|
for(i=0;i<end;i++)
|
|
{
|
|
opus_val16 mask;
|
|
mask = MAX16(MIN16(st->energy_masking[21*c+i],
|
|
QCONST16(.5f, DB_SHIFT)), -QCONST16(2.0f, DB_SHIFT));
|
|
if (mask > 0)
|
|
mask = HALF16(mask);
|
|
mask_sum += mask;
|
|
}
|
|
}
|
|
/* Conservative rate reduction, we cut the masking in half */
|
|
masking_depth = mask_sum / end*st->channels;
|
|
masking_depth += QCONST16(.2f, DB_SHIFT);
|
|
rate_offset = (opus_int32)PSHR32(MULT16_16(srate, masking_depth), DB_SHIFT);
|
|
rate_offset = MAX32(rate_offset, -2*st->silk_mode.bitRate/3);
|
|
/* Split the rate change between the SILK and CELT part for hybrid. */
|
|
if (st->bandwidth==OPUS_BANDWIDTH_SUPERWIDEBAND || st->bandwidth==OPUS_BANDWIDTH_FULLBAND)
|
|
st->silk_mode.bitRate += 3*rate_offset/5;
|
|
else
|
|
st->silk_mode.bitRate += rate_offset;
|
|
bytes_target += rate_offset * frame_size / (8 * st->Fs);
|
|
}
|
|
|
|
st->silk_mode.payloadSize_ms = 1000 * frame_size / st->Fs;
|
|
st->silk_mode.nChannelsAPI = st->channels;
|
|
st->silk_mode.nChannelsInternal = st->stream_channels;
|
|
if (curr_bandwidth == OPUS_BANDWIDTH_NARROWBAND) {
|
|
st->silk_mode.desiredInternalSampleRate = 8000;
|
|
} else if (curr_bandwidth == OPUS_BANDWIDTH_MEDIUMBAND) {
|
|
st->silk_mode.desiredInternalSampleRate = 12000;
|
|
} else {
|
|
silk_assert( st->mode == MODE_HYBRID || curr_bandwidth == OPUS_BANDWIDTH_WIDEBAND );
|
|
st->silk_mode.desiredInternalSampleRate = 16000;
|
|
}
|
|
if( st->mode == MODE_HYBRID ) {
|
|
/* Don't allow bandwidth reduction at lowest bitrates in hybrid mode */
|
|
st->silk_mode.minInternalSampleRate = 16000;
|
|
} else {
|
|
st->silk_mode.minInternalSampleRate = 8000;
|
|
}
|
|
|
|
if (st->mode == MODE_SILK_ONLY)
|
|
{
|
|
opus_int32 effective_max_rate = max_rate;
|
|
st->silk_mode.maxInternalSampleRate = 16000;
|
|
if (frame_rate > 50)
|
|
effective_max_rate = effective_max_rate*2/3;
|
|
if (effective_max_rate < 13000)
|
|
{
|
|
st->silk_mode.maxInternalSampleRate = 12000;
|
|
st->silk_mode.desiredInternalSampleRate = IMIN(12000, st->silk_mode.desiredInternalSampleRate);
|
|
}
|
|
if (effective_max_rate < 9600)
|
|
{
|
|
st->silk_mode.maxInternalSampleRate = 8000;
|
|
st->silk_mode.desiredInternalSampleRate = IMIN(8000, st->silk_mode.desiredInternalSampleRate);
|
|
}
|
|
} else {
|
|
st->silk_mode.maxInternalSampleRate = 16000;
|
|
}
|
|
|
|
st->silk_mode.useCBR = !st->use_vbr;
|
|
|
|
/* Call SILK encoder for the low band */
|
|
nBytes = IMIN(1275, max_data_bytes-1-redundancy_bytes);
|
|
|
|
st->silk_mode.maxBits = nBytes*8;
|
|
/* Only allow up to 90% of the bits for hybrid mode*/
|
|
if (st->mode == MODE_HYBRID)
|
|
st->silk_mode.maxBits = (opus_int32)st->silk_mode.maxBits*9/10;
|
|
if (st->silk_mode.useCBR)
|
|
{
|
|
st->silk_mode.maxBits = (st->silk_mode.bitRate * frame_size / (st->Fs * 8))*8;
|
|
/* Reduce the initial target to make it easier to reach the CBR rate */
|
|
st->silk_mode.bitRate = IMAX(1, st->silk_mode.bitRate-2000);
|
|
}
|
|
|
|
if (prefill)
|
|
{
|
|
opus_int32 zero=0;
|
|
int prefill_offset;
|
|
/* Use a smooth onset for the SILK prefill to avoid the encoder trying to encode
|
|
a discontinuity. The exact location is what we need to avoid leaving any "gap"
|
|
in the audio when mixing with the redundant CELT frame. Here we can afford to
|
|
overwrite st->delay_buffer because the only thing that uses it before it gets
|
|
rewritten is tmp_prefill[] and even then only the part after the ramp really
|
|
gets used (rather than sent to the encoder and discarded) */
|
|
prefill_offset = st->channels*(st->encoder_buffer-st->delay_compensation-st->Fs/400);
|
|
gain_fade(st->delay_buffer+prefill_offset, st->delay_buffer+prefill_offset,
|
|
0, Q15ONE, celt_mode->overlap, st->Fs/400, st->channels, celt_mode->window, st->Fs);
|
|
for(i=0;i<prefill_offset;i++)
|
|
st->delay_buffer[i]=0;
|
|
#ifdef OPUS_FIXED_POINT
|
|
pcm_silk = st->delay_buffer;
|
|
#else
|
|
for (i=0;i<st->encoder_buffer*st->channels;i++)
|
|
pcm_silk[i] = FLOAT2INT16(st->delay_buffer[i]);
|
|
#endif
|
|
silk_Encode( silk_enc, &st->silk_mode, pcm_silk, st->encoder_buffer, NULL, &zero, 1 );
|
|
}
|
|
|
|
#ifdef OPUS_FIXED_POINT
|
|
pcm_silk = pcm_buf+total_buffer*st->channels;
|
|
#else
|
|
for (i=0;i<frame_size*st->channels;i++)
|
|
pcm_silk[i] = FLOAT2INT16(pcm_buf[total_buffer*st->channels + i]);
|
|
#endif
|
|
ret = silk_Encode( silk_enc, &st->silk_mode, pcm_silk, frame_size, &enc, &nBytes, 0 );
|
|
if( ret ) {
|
|
/*fprintf (stderr, "SILK encode error: %d\n", ret);*/
|
|
/* Handle error */
|
|
RESTORE_STACK;
|
|
return OPUS_INTERNAL_ERROR;
|
|
}
|
|
if (nBytes==0)
|
|
{
|
|
st->rangeFinal = 0;
|
|
data[-1] = gen_toc(st->mode, st->Fs/frame_size, curr_bandwidth, st->stream_channels);
|
|
RESTORE_STACK;
|
|
return 1;
|
|
}
|
|
/* Extract SILK internal bandwidth for signaling in first byte */
|
|
if( st->mode == MODE_SILK_ONLY ) {
|
|
if( st->silk_mode.internalSampleRate == 8000 ) {
|
|
curr_bandwidth = OPUS_BANDWIDTH_NARROWBAND;
|
|
} else if( st->silk_mode.internalSampleRate == 12000 ) {
|
|
curr_bandwidth = OPUS_BANDWIDTH_MEDIUMBAND;
|
|
} else if( st->silk_mode.internalSampleRate == 16000 ) {
|
|
curr_bandwidth = OPUS_BANDWIDTH_WIDEBAND;
|
|
}
|
|
} else {
|
|
silk_assert( st->silk_mode.internalSampleRate == 16000 );
|
|
}
|
|
|
|
st->silk_mode.opusCanSwitch = st->silk_mode.switchReady;
|
|
/* FIXME: How do we allocate the redundancy for CBR? */
|
|
if (st->silk_mode.opusCanSwitch)
|
|
{
|
|
redundancy = 1;
|
|
celt_to_silk = 0;
|
|
st->silk_bw_switch = 1;
|
|
}
|
|
}
|
|
|
|
/* CELT processing */
|
|
{
|
|
int endband=21;
|
|
|
|
switch(curr_bandwidth)
|
|
{
|
|
case OPUS_BANDWIDTH_NARROWBAND:
|
|
endband = 13;
|
|
break;
|
|
case OPUS_BANDWIDTH_MEDIUMBAND:
|
|
case OPUS_BANDWIDTH_WIDEBAND:
|
|
endband = 17;
|
|
break;
|
|
case OPUS_BANDWIDTH_SUPERWIDEBAND:
|
|
endband = 19;
|
|
break;
|
|
case OPUS_BANDWIDTH_FULLBAND:
|
|
endband = 21;
|
|
break;
|
|
}
|
|
celt_encoder_ctl(celt_enc, CELT_SET_END_BAND(endband));
|
|
celt_encoder_ctl(celt_enc, CELT_SET_CHANNELS(st->stream_channels));
|
|
}
|
|
celt_encoder_ctl(celt_enc, OPUS_SET_BITRATE(OPUS_BITRATE_MAX));
|
|
if (st->mode != MODE_SILK_ONLY)
|
|
{
|
|
opus_val32 celt_pred=2;
|
|
celt_encoder_ctl(celt_enc, OPUS_SET_VBR(0));
|
|
/* We may still decide to disable prediction later */
|
|
if (st->silk_mode.reducedDependency)
|
|
celt_pred = 0;
|
|
celt_encoder_ctl(celt_enc, CELT_SET_PREDICTION(celt_pred));
|
|
|
|
if (st->mode == MODE_HYBRID)
|
|
{
|
|
int len;
|
|
|
|
len = (ec_tell(&enc)+7)>>3;
|
|
if (redundancy)
|
|
len += st->mode == MODE_HYBRID ? 3 : 1;
|
|
if( st->use_vbr ) {
|
|
nb_compr_bytes = len + bytes_target - (st->silk_mode.bitRate * frame_size) / (8 * st->Fs);
|
|
} else {
|
|
/* check if SILK used up too much */
|
|
nb_compr_bytes = len > bytes_target ? len : bytes_target;
|
|
}
|
|
} else {
|
|
if (st->use_vbr)
|
|
{
|
|
opus_int32 bonus=0;
|
|
#ifndef DISABLE_FLOAT_API
|
|
if (st->variable_duration==OPUS_FRAMESIZE_VARIABLE && frame_size != st->Fs/50)
|
|
{
|
|
bonus = (60*st->stream_channels+40)*(st->Fs/frame_size-50);
|
|
if (analysis_info.valid)
|
|
bonus = (opus_int32)(bonus*(1.f+.5f*analysis_info.tonality));
|
|
}
|
|
#endif
|
|
celt_encoder_ctl(celt_enc, OPUS_SET_VBR(1));
|
|
celt_encoder_ctl(celt_enc, OPUS_SET_VBR_CONSTRAINT(st->vbr_constraint));
|
|
celt_encoder_ctl(celt_enc, OPUS_SET_BITRATE(st->bitrate_bps+bonus));
|
|
nb_compr_bytes = max_data_bytes-1-redundancy_bytes;
|
|
} else {
|
|
nb_compr_bytes = bytes_target;
|
|
}
|
|
}
|
|
|
|
} else {
|
|
nb_compr_bytes = 0;
|
|
}
|
|
|
|
ALLOC(tmp_prefill, st->channels*st->Fs/400, opus_val16);
|
|
if (st->mode != MODE_SILK_ONLY && st->mode != st->prev_mode && st->prev_mode > 0)
|
|
{
|
|
for (i=0;i<st->channels*st->Fs/400;i++)
|
|
tmp_prefill[i] = st->delay_buffer[(st->encoder_buffer-total_buffer-st->Fs/400)*st->channels + i];
|
|
}
|
|
|
|
for (i=0;i<st->channels*(st->encoder_buffer-(frame_size+total_buffer));i++)
|
|
st->delay_buffer[i] = st->delay_buffer[i+st->channels*frame_size];
|
|
for (;i<st->encoder_buffer*st->channels;i++)
|
|
st->delay_buffer[i] = pcm_buf[(frame_size+total_buffer-st->encoder_buffer)*st->channels+i];
|
|
|
|
/* gain_fade() and stereo_fade() need to be after the buffer copying
|
|
because we don't want any of this to affect the SILK part */
|
|
if( st->prev_HB_gain < Q15ONE || HB_gain < Q15ONE ) {
|
|
gain_fade(pcm_buf, pcm_buf,
|
|
st->prev_HB_gain, HB_gain, celt_mode->overlap, frame_size, st->channels, celt_mode->window, st->Fs);
|
|
}
|
|
st->prev_HB_gain = HB_gain;
|
|
if (st->mode != MODE_HYBRID || st->stream_channels==1)
|
|
st->silk_mode.stereoWidth_Q14 = IMIN((1<<14),2*IMAX(0,equiv_rate-30000));
|
|
if( !st->energy_masking && st->channels == 2 ) {
|
|
/* Apply stereo width reduction (at low bitrates) */
|
|
if( st->hybrid_stereo_width_Q14 < (1 << 14) || st->silk_mode.stereoWidth_Q14 < (1 << 14) ) {
|
|
opus_val16 g1, g2;
|
|
g1 = st->hybrid_stereo_width_Q14;
|
|
g2 = (opus_val16)(st->silk_mode.stereoWidth_Q14);
|
|
#ifdef OPUS_FIXED_POINT
|
|
g1 = g1==16384 ? Q15ONE : SHL16(g1,1);
|
|
g2 = g2==16384 ? Q15ONE : SHL16(g2,1);
|
|
#else
|
|
g1 *= (1.f/16384);
|
|
g2 *= (1.f/16384);
|
|
#endif
|
|
stereo_fade(pcm_buf, pcm_buf, g1, g2, celt_mode->overlap,
|
|
frame_size, st->channels, celt_mode->window, st->Fs);
|
|
st->hybrid_stereo_width_Q14 = st->silk_mode.stereoWidth_Q14;
|
|
}
|
|
}
|
|
|
|
if ( st->mode != MODE_CELT_ONLY && ec_tell(&enc)+17+20*(st->mode == MODE_HYBRID) <= 8*(max_data_bytes-1))
|
|
{
|
|
/* For SILK mode, the redundancy is inferred from the length */
|
|
if (st->mode == MODE_HYBRID && (redundancy || ec_tell(&enc)+37 <= 8*nb_compr_bytes))
|
|
ec_enc_bit_logp(&enc, redundancy, 12);
|
|
if (redundancy)
|
|
{
|
|
int max_redundancy;
|
|
ec_enc_bit_logp(&enc, celt_to_silk, 1);
|
|
if (st->mode == MODE_HYBRID)
|
|
max_redundancy = (max_data_bytes-1)-nb_compr_bytes;
|
|
else
|
|
max_redundancy = (max_data_bytes-1)-((ec_tell(&enc)+7)>>3);
|
|
/* Target the same bit-rate for redundancy as for the rest,
|
|
up to a max of 257 bytes */
|
|
redundancy_bytes = IMIN(max_redundancy, st->bitrate_bps/1600);
|
|
redundancy_bytes = IMIN(257, IMAX(2, redundancy_bytes));
|
|
if (st->mode == MODE_HYBRID)
|
|
ec_enc_uint(&enc, redundancy_bytes-2, 256);
|
|
}
|
|
} else {
|
|
redundancy = 0;
|
|
}
|
|
|
|
if (!redundancy)
|
|
{
|
|
st->silk_bw_switch = 0;
|
|
redundancy_bytes = 0;
|
|
}
|
|
if (st->mode != MODE_CELT_ONLY)start_band=17;
|
|
|
|
if (st->mode == MODE_SILK_ONLY)
|
|
{
|
|
ret = (ec_tell(&enc)+7)>>3;
|
|
ec_enc_done(&enc);
|
|
nb_compr_bytes = ret;
|
|
} else {
|
|
nb_compr_bytes = IMIN((max_data_bytes-1)-redundancy_bytes, nb_compr_bytes);
|
|
ec_enc_shrink(&enc, nb_compr_bytes);
|
|
}
|
|
|
|
#ifndef DISABLE_FLOAT_API
|
|
if (redundancy || st->mode != MODE_SILK_ONLY)
|
|
celt_encoder_ctl(celt_enc, CELT_SET_ANALYSIS(&analysis_info));
|
|
#endif
|
|
|
|
/* 5 ms redundant frame for CELT->SILK */
|
|
if (redundancy && celt_to_silk)
|
|
{
|
|
int err;
|
|
celt_encoder_ctl(celt_enc, CELT_SET_START_BAND(0));
|
|
celt_encoder_ctl(celt_enc, OPUS_SET_VBR(0));
|
|
err = celt_encode_with_ec(celt_enc, pcm_buf, st->Fs/200, data+nb_compr_bytes, redundancy_bytes, NULL);
|
|
if (err < 0)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_INTERNAL_ERROR;
|
|
}
|
|
celt_encoder_ctl(celt_enc, OPUS_GET_FINAL_RANGE(&redundant_rng));
|
|
celt_encoder_ctl(celt_enc, OPUS_RESET_STATE);
|
|
}
|
|
|
|
celt_encoder_ctl(celt_enc, CELT_SET_START_BAND(start_band));
|
|
|
|
if (st->mode != MODE_SILK_ONLY)
|
|
{
|
|
if (st->mode != st->prev_mode && st->prev_mode > 0)
|
|
{
|
|
unsigned char dummy[2];
|
|
celt_encoder_ctl(celt_enc, OPUS_RESET_STATE);
|
|
|
|
/* Prefilling */
|
|
celt_encode_with_ec(celt_enc, tmp_prefill, st->Fs/400, dummy, 2, NULL);
|
|
celt_encoder_ctl(celt_enc, CELT_SET_PREDICTION(0));
|
|
}
|
|
/* If false, we already busted the budget and we'll end up with a "PLC packet" */
|
|
if (ec_tell(&enc) <= 8*nb_compr_bytes)
|
|
{
|
|
ret = celt_encode_with_ec(celt_enc, pcm_buf, frame_size, NULL, nb_compr_bytes, &enc);
|
|
if (ret < 0)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_INTERNAL_ERROR;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 5 ms redundant frame for SILK->CELT */
|
|
if (redundancy && !celt_to_silk)
|
|
{
|
|
int err;
|
|
unsigned char dummy[2];
|
|
int N2, N4;
|
|
N2 = st->Fs/200;
|
|
N4 = st->Fs/400;
|
|
|
|
celt_encoder_ctl(celt_enc, OPUS_RESET_STATE);
|
|
celt_encoder_ctl(celt_enc, CELT_SET_START_BAND(0));
|
|
celt_encoder_ctl(celt_enc, CELT_SET_PREDICTION(0));
|
|
|
|
/* NOTE: We could speed this up slightly (at the expense of code size) by just adding a function that prefills the buffer */
|
|
celt_encode_with_ec(celt_enc, pcm_buf+st->channels*(frame_size-N2-N4), N4, dummy, 2, NULL);
|
|
|
|
err = celt_encode_with_ec(celt_enc, pcm_buf+st->channels*(frame_size-N2), N2, data+nb_compr_bytes, redundancy_bytes, NULL);
|
|
if (err < 0)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_INTERNAL_ERROR;
|
|
}
|
|
celt_encoder_ctl(celt_enc, OPUS_GET_FINAL_RANGE(&redundant_rng));
|
|
}
|
|
|
|
|
|
|
|
/* Signalling the mode in the first byte */
|
|
data--;
|
|
data[0] = gen_toc(st->mode, st->Fs/frame_size, curr_bandwidth, st->stream_channels);
|
|
|
|
st->rangeFinal = enc.rng ^ redundant_rng;
|
|
|
|
if (to_celt)
|
|
st->prev_mode = MODE_CELT_ONLY;
|
|
else
|
|
st->prev_mode = st->mode;
|
|
st->prev_channels = st->stream_channels;
|
|
st->prev_framesize = frame_size;
|
|
|
|
st->first = 0;
|
|
|
|
/* In the unlikely case that the SILK encoder busted its target, tell
|
|
the decoder to call the PLC */
|
|
if (ec_tell(&enc) > (max_data_bytes-1)*8)
|
|
{
|
|
if (max_data_bytes < 2)
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_BUFFER_TOO_SMALL;
|
|
}
|
|
data[1] = 0;
|
|
ret = 1;
|
|
st->rangeFinal = 0;
|
|
} else if (st->mode==MODE_SILK_ONLY&&!redundancy)
|
|
{
|
|
/*When in LPC only mode it's perfectly
|
|
reasonable to strip off trailing zero bytes as
|
|
the required range decoder behavior is to
|
|
fill these in. This can't be done when the MDCT
|
|
modes are used because the decoder needs to know
|
|
the actual length for allocation purposes.*/
|
|
while(ret>2&&data[ret]==0)ret--;
|
|
}
|
|
/* Count ToC and redundancy */
|
|
ret += 1+redundancy_bytes;
|
|
if (!st->use_vbr)
|
|
{
|
|
if (opus_packet_pad(data, ret, max_data_bytes) != OPUS_OK)
|
|
|
|
{
|
|
RESTORE_STACK;
|
|
return OPUS_INTERNAL_ERROR;
|
|
}
|
|
ret = max_data_bytes;
|
|
}
|
|
RESTORE_STACK;
|
|
return ret;
|
|
}
|
|
|
|
#ifdef OPUS_FIXED_POINT
|
|
|
|
#ifndef DISABLE_FLOAT_API
|
|
opus_int32 opus_encode_float(OpusEncoder *st, const float *pcm, int analysis_frame_size,
|
|
unsigned char *data, opus_int32 max_data_bytes)
|
|
{
|
|
int i, ret;
|
|
int frame_size;
|
|
int delay_compensation;
|
|
VARDECL(opus_int16, in);
|
|
ALLOC_STACK;
|
|
|
|
if (st->application == OPUS_APPLICATION_RESTRICTED_LOWDELAY)
|
|
delay_compensation = 0;
|
|
else
|
|
delay_compensation = st->delay_compensation;
|
|
frame_size = compute_frame_size(pcm, analysis_frame_size,
|
|
st->variable_duration, st->channels, st->Fs, st->bitrate_bps,
|
|
delay_compensation, downmix_float, st->analysis.subframe_mem);
|
|
|
|
ALLOC(in, frame_size*st->channels, opus_int16);
|
|
|
|
for (i=0;i<frame_size*st->channels;i++)
|
|
in[i] = FLOAT2INT16(pcm[i]);
|
|
ret = opus_encode_native(st, in, frame_size, data, max_data_bytes, 16, pcm, analysis_frame_size, 0, -2, st->channels, downmix_float);
|
|
RESTORE_STACK;
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
opus_int32 opus_encode(OpusEncoder *st, const opus_int16 *pcm, int analysis_frame_size,
|
|
unsigned char *data, opus_int32 out_data_bytes)
|
|
{
|
|
int frame_size;
|
|
int delay_compensation;
|
|
if (st->application == OPUS_APPLICATION_RESTRICTED_LOWDELAY)
|
|
delay_compensation = 0;
|
|
else
|
|
delay_compensation = st->delay_compensation;
|
|
frame_size = compute_frame_size(pcm, analysis_frame_size,
|
|
st->variable_duration, st->channels, st->Fs, st->bitrate_bps,
|
|
delay_compensation, downmix_int
|
|
#ifndef DISABLE_FLOAT_API
|
|
, st->analysis.subframe_mem
|
|
#endif
|
|
);
|
|
return opus_encode_native(st, pcm, frame_size, data, out_data_bytes, 16, pcm, analysis_frame_size, 0, -2, st->channels, downmix_int);
|
|
}
|
|
|
|
#else
|
|
opus_int32 opus_encode(OpusEncoder *st, const opus_int16 *pcm, int analysis_frame_size,
|
|
unsigned char *data, opus_int32 max_data_bytes)
|
|
{
|
|
int i, ret;
|
|
int frame_size;
|
|
int delay_compensation;
|
|
VARDECL(float, in);
|
|
ALLOC_STACK;
|
|
|
|
if (st->application == OPUS_APPLICATION_RESTRICTED_LOWDELAY)
|
|
delay_compensation = 0;
|
|
else
|
|
delay_compensation = st->delay_compensation;
|
|
frame_size = compute_frame_size(pcm, analysis_frame_size,
|
|
st->variable_duration, st->channels, st->Fs, st->bitrate_bps,
|
|
delay_compensation, downmix_int, st->analysis.subframe_mem);
|
|
|
|
ALLOC(in, frame_size*st->channels, float);
|
|
|
|
for (i=0;i<frame_size*st->channels;i++)
|
|
in[i] = (1.0f/32768)*pcm[i];
|
|
ret = opus_encode_native(st, in, frame_size, data, max_data_bytes, 16, pcm, analysis_frame_size, 0, -2, st->channels, downmix_int);
|
|
RESTORE_STACK;
|
|
return ret;
|
|
}
|
|
opus_int32 opus_encode_float(OpusEncoder *st, const float *pcm, int analysis_frame_size,
|
|
unsigned char *data, opus_int32 out_data_bytes)
|
|
{
|
|
int frame_size;
|
|
int delay_compensation;
|
|
if (st->application == OPUS_APPLICATION_RESTRICTED_LOWDELAY)
|
|
delay_compensation = 0;
|
|
else
|
|
delay_compensation = st->delay_compensation;
|
|
frame_size = compute_frame_size(pcm, analysis_frame_size,
|
|
st->variable_duration, st->channels, st->Fs, st->bitrate_bps,
|
|
delay_compensation, downmix_float, st->analysis.subframe_mem);
|
|
return opus_encode_native(st, pcm, frame_size, data, out_data_bytes, 24,
|
|
pcm, analysis_frame_size, 0, -2, st->channels, downmix_float);
|
|
}
|
|
#endif
|
|
|
|
|
|
int opus_encoder_ctl(OpusEncoder *st, int request, ...)
|
|
{
|
|
int ret;
|
|
CELTEncoder *celt_enc;
|
|
va_list ap;
|
|
|
|
ret = OPUS_OK;
|
|
va_start(ap, request);
|
|
|
|
celt_enc = (CELTEncoder*)((char*)st+st->celt_enc_offset);
|
|
|
|
switch (request)
|
|
{
|
|
case OPUS_SET_APPLICATION_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if ( (value != OPUS_APPLICATION_VOIP && value != OPUS_APPLICATION_AUDIO
|
|
&& value != OPUS_APPLICATION_RESTRICTED_LOWDELAY)
|
|
|| (!st->first && st->application != value))
|
|
{
|
|
ret = OPUS_BAD_ARG;
|
|
break;
|
|
}
|
|
st->application = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_APPLICATION_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->application;
|
|
}
|
|
break;
|
|
case OPUS_SET_BITRATE_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value != OPUS_AUTO && value != OPUS_BITRATE_MAX)
|
|
{
|
|
if (value <= 0)
|
|
goto bad_arg;
|
|
else if (value <= 500)
|
|
value = 500;
|
|
else if (value > (opus_int32)300000*st->channels)
|
|
value = (opus_int32)300000*st->channels;
|
|
}
|
|
st->user_bitrate_bps = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_BITRATE_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = user_bitrate_to_bitrate(st, st->prev_framesize, 1276);
|
|
}
|
|
break;
|
|
case OPUS_SET_FORCE_CHANNELS_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if((value<1 || value>st->channels) && value != OPUS_AUTO)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->force_channels = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_FORCE_CHANNELS_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->force_channels;
|
|
}
|
|
break;
|
|
case OPUS_SET_MAX_BANDWIDTH_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value < OPUS_BANDWIDTH_NARROWBAND || value > OPUS_BANDWIDTH_FULLBAND)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->max_bandwidth = value;
|
|
if (st->max_bandwidth == OPUS_BANDWIDTH_NARROWBAND) {
|
|
st->silk_mode.maxInternalSampleRate = 8000;
|
|
} else if (st->max_bandwidth == OPUS_BANDWIDTH_MEDIUMBAND) {
|
|
st->silk_mode.maxInternalSampleRate = 12000;
|
|
} else {
|
|
st->silk_mode.maxInternalSampleRate = 16000;
|
|
}
|
|
}
|
|
break;
|
|
case OPUS_GET_MAX_BANDWIDTH_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->max_bandwidth;
|
|
}
|
|
break;
|
|
case OPUS_SET_BANDWIDTH_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if ((value < OPUS_BANDWIDTH_NARROWBAND || value > OPUS_BANDWIDTH_FULLBAND) && value != OPUS_AUTO)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->user_bandwidth = value;
|
|
if (st->user_bandwidth == OPUS_BANDWIDTH_NARROWBAND) {
|
|
st->silk_mode.maxInternalSampleRate = 8000;
|
|
} else if (st->user_bandwidth == OPUS_BANDWIDTH_MEDIUMBAND) {
|
|
st->silk_mode.maxInternalSampleRate = 12000;
|
|
} else {
|
|
st->silk_mode.maxInternalSampleRate = 16000;
|
|
}
|
|
}
|
|
break;
|
|
case OPUS_GET_BANDWIDTH_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->bandwidth;
|
|
}
|
|
break;
|
|
case OPUS_SET_DTX_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if(value<0 || value>1)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->silk_mode.useDTX = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_DTX_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->silk_mode.useDTX;
|
|
}
|
|
break;
|
|
case OPUS_SET_COMPLEXITY_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if(value<0 || value>10)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->silk_mode.complexity = value;
|
|
celt_encoder_ctl(celt_enc, OPUS_SET_COMPLEXITY(value));
|
|
}
|
|
break;
|
|
case OPUS_GET_COMPLEXITY_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->silk_mode.complexity;
|
|
}
|
|
break;
|
|
case OPUS_SET_INBAND_FEC_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if(value<0 || value>1)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->silk_mode.useInBandFEC = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_INBAND_FEC_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->silk_mode.useInBandFEC;
|
|
}
|
|
break;
|
|
case OPUS_SET_PACKET_LOSS_PERC_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value < 0 || value > 100)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->silk_mode.packetLossPercentage = value;
|
|
celt_encoder_ctl(celt_enc, OPUS_SET_PACKET_LOSS_PERC(value));
|
|
}
|
|
break;
|
|
case OPUS_GET_PACKET_LOSS_PERC_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->silk_mode.packetLossPercentage;
|
|
}
|
|
break;
|
|
case OPUS_SET_VBR_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if(value<0 || value>1)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->use_vbr = value;
|
|
st->silk_mode.useCBR = 1-value;
|
|
}
|
|
break;
|
|
case OPUS_GET_VBR_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->use_vbr;
|
|
}
|
|
break;
|
|
case OPUS_SET_VOICE_RATIO_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value<-1 || value>100)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->voice_ratio = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_VOICE_RATIO_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->voice_ratio;
|
|
}
|
|
break;
|
|
case OPUS_SET_VBR_CONSTRAINT_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if(value<0 || value>1)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->vbr_constraint = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_VBR_CONSTRAINT_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->vbr_constraint;
|
|
}
|
|
break;
|
|
case OPUS_SET_SIGNAL_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if(value!=OPUS_AUTO && value!=OPUS_SIGNAL_VOICE && value!=OPUS_SIGNAL_MUSIC)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->signal_type = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_SIGNAL_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->signal_type;
|
|
}
|
|
break;
|
|
case OPUS_GET_LOOKAHEAD_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->Fs/400;
|
|
if (st->application != OPUS_APPLICATION_RESTRICTED_LOWDELAY)
|
|
*value += st->delay_compensation;
|
|
}
|
|
break;
|
|
case OPUS_GET_SAMPLE_RATE_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->Fs;
|
|
}
|
|
break;
|
|
case OPUS_GET_FINAL_RANGE_REQUEST:
|
|
{
|
|
opus_uint32 *value = va_arg(ap, opus_uint32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->rangeFinal;
|
|
}
|
|
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*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->lsb_depth;
|
|
}
|
|
break;
|
|
case OPUS_SET_EXPERT_FRAME_DURATION_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value != OPUS_FRAMESIZE_ARG && value != OPUS_FRAMESIZE_2_5_MS &&
|
|
value != OPUS_FRAMESIZE_5_MS && value != OPUS_FRAMESIZE_10_MS &&
|
|
value != OPUS_FRAMESIZE_20_MS && value != OPUS_FRAMESIZE_40_MS &&
|
|
value != OPUS_FRAMESIZE_60_MS && value != OPUS_FRAMESIZE_VARIABLE)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->variable_duration = value;
|
|
celt_encoder_ctl(celt_enc, OPUS_SET_EXPERT_FRAME_DURATION(value));
|
|
}
|
|
break;
|
|
case OPUS_GET_EXPERT_FRAME_DURATION_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
*value = st->variable_duration;
|
|
}
|
|
break;
|
|
case OPUS_SET_PREDICTION_DISABLED_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if (value > 1 || value < 0)
|
|
goto bad_arg;
|
|
st->silk_mode.reducedDependency = value;
|
|
}
|
|
break;
|
|
case OPUS_GET_PREDICTION_DISABLED_REQUEST:
|
|
{
|
|
opus_int32 *value = va_arg(ap, opus_int32*);
|
|
if (!value)
|
|
goto bad_arg;
|
|
*value = st->silk_mode.reducedDependency;
|
|
}
|
|
break;
|
|
case OPUS_RESET_STATE:
|
|
{
|
|
void *silk_enc;
|
|
silk_EncControlStruct dummy;
|
|
silk_enc = (char*)st+st->silk_enc_offset;
|
|
|
|
OPUS_CLEAR((char*)&st->OPUS_ENCODER_RESET_START,
|
|
sizeof(OpusEncoder)-
|
|
((char*)&st->OPUS_ENCODER_RESET_START - (char*)st));
|
|
|
|
celt_encoder_ctl(celt_enc, OPUS_RESET_STATE);
|
|
silk_InitEncoder( silk_enc, st->arch, &dummy );
|
|
st->stream_channels = st->channels;
|
|
st->hybrid_stereo_width_Q14 = 1 << 14;
|
|
st->prev_HB_gain = Q15ONE;
|
|
st->first = 1;
|
|
st->mode = MODE_HYBRID;
|
|
st->bandwidth = OPUS_BANDWIDTH_FULLBAND;
|
|
st->variable_HP_smth2_Q15 = silk_LSHIFT( silk_lin2log( VARIABLE_HP_MIN_CUTOFF_HZ ), 8 );
|
|
}
|
|
break;
|
|
case OPUS_SET_FORCE_MODE_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
if ((value < MODE_SILK_ONLY || value > MODE_CELT_ONLY) && value != OPUS_AUTO)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
st->user_forced_mode = value;
|
|
}
|
|
break;
|
|
case OPUS_SET_LFE_REQUEST:
|
|
{
|
|
opus_int32 value = va_arg(ap, opus_int32);
|
|
st->lfe = value;
|
|
ret = celt_encoder_ctl(celt_enc, OPUS_SET_LFE(value));
|
|
}
|
|
break;
|
|
case OPUS_SET_ENERGY_MASK_REQUEST:
|
|
{
|
|
opus_val16 *value = va_arg(ap, opus_val16*);
|
|
st->energy_masking = value;
|
|
ret = celt_encoder_ctl(celt_enc, OPUS_SET_ENERGY_MASK(value));
|
|
}
|
|
break;
|
|
|
|
case CELT_GET_MODE_REQUEST:
|
|
{
|
|
const CELTMode ** value = va_arg(ap, const CELTMode**);
|
|
if (!value)
|
|
{
|
|
goto bad_arg;
|
|
}
|
|
ret = celt_encoder_ctl(celt_enc, CELT_GET_MODE(value));
|
|
}
|
|
break;
|
|
default:
|
|
/* fprintf(stderr, "unknown opus_encoder_ctl() request: %d", request);*/
|
|
ret = OPUS_UNIMPLEMENTED;
|
|
break;
|
|
}
|
|
va_end(ap);
|
|
return ret;
|
|
bad_arg:
|
|
va_end(ap);
|
|
return OPUS_BAD_ARG;
|
|
}
|
|
|
|
void opus_encoder_destroy(OpusEncoder *st)
|
|
{
|
|
opus_free(st);
|
|
}
|