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-rw-r--r--drivers/opus/opus_encoder.c2524
1 files changed, 0 insertions, 2524 deletions
diff --git a/drivers/opus/opus_encoder.c b/drivers/opus/opus_encoder.c
deleted file mode 100644
index 5c6af5a199..0000000000
--- a/drivers/opus/opus_encoder.c
+++ /dev/null
@@ -1,2524 +0,0 @@
-/* Copyright (c) 2010-2011 Xiph.Org Foundation, Skype Limited
- Written by Jean-Marc Valin and Koen Vos */
-/*
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- - Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- - Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
- OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-#include "opus/opus_config.h"
-
-#include <stdarg.h>
-#include "opus/celt/celt.h"
-#include "opus/celt/entenc.h"
-#include "opus/celt/modes.h"
-#include "opus/silk/API.h"
-#include "opus/celt/stack_alloc.h"
-#include "opus/celt/float_cast.h"
-#include "opus/opus.h"
-#include "opus/celt/arch.h"
-#include "opus/celt/pitch.h"
-#include "opus/opus_private.h"
-#include "opus/celt/os_support.h"
-#include "opus/celt/cpu_support.h"
-#include "opus/analysis.h"
-#include "opus/celt/mathops.h"
-#include "opus/silk/tuning_parameters.h"
-#ifdef OPUS_FIXED_POINT
-#include "opus/silk/fixed/structs_FIX.h"
-#else
-#include "opus/silk/float/structs_FLP.h"
-#endif
-
-#define MAX_ENCODER_BUFFER 480
-
-typedef struct {
- opus_val32 XX, XY, YY;
- opus_val16 smoothed_width;
- opus_val16 max_follower;
-} StereoWidthState;
-
-struct OpusEncoder {
- int celt_enc_offset;
- int silk_enc_offset;
- silk_EncControlStruct silk_mode;
- int application;
- int channels;
- int delay_compensation;
- int force_channels;
- int signal_type;
- int user_bandwidth;
- int max_bandwidth;
- int user_forced_mode;
- int voice_ratio;
- opus_int32 Fs;
- int use_vbr;
- int vbr_constraint;
- int variable_duration;
- opus_int32 bitrate_bps;
- opus_int32 user_bitrate_bps;
- int lsb_depth;
- int encoder_buffer;
- int lfe;
- int arch;
-#ifndef DISABLE_FLOAT_API
- TonalityAnalysisState analysis;
-#endif
-
-#define OPUS_ENCODER_RESET_START stream_channels
- int stream_channels;
- opus_int16 hybrid_stereo_width_Q14;
- opus_int32 variable_HP_smth2_Q15;
- opus_val16 prev_HB_gain;
- opus_val32 hp_mem[4];
- int mode;
- int prev_mode;
- int prev_channels;
- int prev_framesize;
- int bandwidth;
- int silk_bw_switch;
- /* Sampling rate (at the API level) */
- int first;
- opus_val16 * energy_masking;
- StereoWidthState width_mem;
- opus_val16 delay_buffer[MAX_ENCODER_BUFFER*2];
-#ifndef DISABLE_FLOAT_API
- int detected_bandwidth;
-#endif
- opus_uint32 rangeFinal;
-};
-
-/* Transition tables for the voice and music. First column is the
- middle (memoriless) threshold. The second column is the hysteresis
- (difference with the middle) */
-static const opus_int32 mono_voice_bandwidth_thresholds[8] = {
- 11000, 1000, /* NB<->MB */
- 14000, 1000, /* MB<->WB */
- 17000, 1000, /* WB<->SWB */
- 21000, 2000, /* SWB<->FB */
-};
-static const opus_int32 mono_music_bandwidth_thresholds[8] = {
- 12000, 1000, /* NB<->MB */
- 15000, 1000, /* MB<->WB */
- 18000, 2000, /* WB<->SWB */
- 22000, 2000, /* SWB<->FB */
-};
-static const opus_int32 stereo_voice_bandwidth_thresholds[8] = {
- 11000, 1000, /* NB<->MB */
- 14000, 1000, /* MB<->WB */
- 21000, 2000, /* WB<->SWB */
- 28000, 2000, /* SWB<->FB */
-};
-static const opus_int32 stereo_music_bandwidth_thresholds[8] = {
- 12000, 1000, /* NB<->MB */
- 18000, 2000, /* MB<->WB */
- 21000, 2000, /* WB<->SWB */
- 30000, 2000, /* SWB<->FB */
-};
-/* Threshold bit-rates for switching between mono and stereo */
-static const opus_int32 stereo_voice_threshold = 30000;
-static const opus_int32 stereo_music_threshold = 30000;
-
-/* Threshold bit-rate for switching between SILK/hybrid and CELT-only */
-static const opus_int32 mode_thresholds[2][2] = {
- /* voice */ /* music */
- { 64000, 16000}, /* mono */
- { 36000, 16000}, /* stereo */
-};
-
-int opus_encoder_get_size(int channels)
-{
- int silkEncSizeBytes, celtEncSizeBytes;
- int ret;
- if (channels<1 || channels > 2)
- return 0;
- ret = silk_Get_Encoder_Size( &silkEncSizeBytes );
- if (ret)
- return 0;
- silkEncSizeBytes = align(silkEncSizeBytes);
- celtEncSizeBytes = celt_encoder_get_size(channels);
- return align(sizeof(OpusEncoder))+silkEncSizeBytes+celtEncSizeBytes;
-}
-
-int opus_encoder_init(OpusEncoder* st, opus_int32 Fs, int channels, int application)
-{
- void *silk_enc;
- CELTEncoder *celt_enc;
- int err;
- int ret, silkEncSizeBytes;
-
- 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))
- return OPUS_BAD_ARG;
-
- OPUS_CLEAR((char*)st, opus_encoder_get_size(channels));
- /* Create SILK encoder */
- ret = silk_Get_Encoder_Size( &silkEncSizeBytes );
- if (ret)
- return OPUS_BAD_ARG;
- silkEncSizeBytes = align(silkEncSizeBytes);
- st->silk_enc_offset = align(sizeof(OpusEncoder));
- st->celt_enc_offset = st->silk_enc_offset+silkEncSizeBytes;
- silk_enc = (char*)st+st->silk_enc_offset;
- celt_enc = (CELTEncoder*)((char*)st+st->celt_enc_offset);
-
- st->stream_channels = st->channels = channels;
-
- st->Fs = Fs;
-
- st->arch = opus_select_arch();
-
- ret = silk_InitEncoder( silk_enc, st->arch, &st->silk_mode );
- if(ret)return OPUS_INTERNAL_ERROR;
-
- /* default SILK parameters */
- st->silk_mode.nChannelsAPI = channels;
- st->silk_mode.nChannelsInternal = channels;
- st->silk_mode.API_sampleRate = st->Fs;
- st->silk_mode.maxInternalSampleRate = 16000;
- st->silk_mode.minInternalSampleRate = 8000;
- st->silk_mode.desiredInternalSampleRate = 16000;
- st->silk_mode.payloadSize_ms = 20;
- st->silk_mode.bitRate = 25000;
- st->silk_mode.packetLossPercentage = 0;
- st->silk_mode.complexity = 9;
- st->silk_mode.useInBandFEC = 0;
- st->silk_mode.useDTX = 0;
- st->silk_mode.useCBR = 0;
- st->silk_mode.reducedDependency = 0;
-
- /* Create CELT encoder */
- /* Initialize CELT encoder */
- err = celt_encoder_init(celt_enc, Fs, channels, st->arch);
- if(err!=OPUS_OK)return OPUS_INTERNAL_ERROR;
-
- celt_encoder_ctl(celt_enc, CELT_SET_SIGNALLING(0));
- celt_encoder_ctl(celt_enc, OPUS_SET_COMPLEXITY(st->silk_mode.complexity));
-
- st->use_vbr = 1;
- /* Makes constrained VBR the default (safer for real-time use) */
- st->vbr_constraint = 1;
- st->user_bitrate_bps = OPUS_AUTO;
- st->bitrate_bps = 3000+Fs*channels;
- st->application = application;
- st->signal_type = OPUS_AUTO;
- st->user_bandwidth = OPUS_AUTO;
- st->max_bandwidth = OPUS_BANDWIDTH_FULLBAND;
- st->force_channels = OPUS_AUTO;
- st->user_forced_mode = OPUS_AUTO;
- st->voice_ratio = -1;
- st->encoder_buffer = st->Fs/100;
- st->lsb_depth = 24;
- st->variable_duration = OPUS_FRAMESIZE_ARG;
-
- /* Delay compensation of 4 ms (2.5 ms for SILK's extra look-ahead
- + 1.5 ms for SILK resamplers and stereo prediction) */
- st->delay_compensation = st->Fs/250;
-
- st->hybrid_stereo_width_Q14 = 1 << 14;
- st->prev_HB_gain = Q15ONE;
- st->variable_HP_smth2_Q15 = silk_LSHIFT( silk_lin2log( VARIABLE_HP_MIN_CUTOFF_HZ ), 8 );
- st->first = 1;
- st->mode = MODE_HYBRID;
- st->bandwidth = OPUS_BANDWIDTH_FULLBAND;
-
-#ifndef DISABLE_FLOAT_API
- tonality_analysis_init(&st->analysis);
-#endif
-
- return OPUS_OK;
-}
-
-static unsigned char gen_toc(int mode, int framerate, int bandwidth, int channels)
-{
- int period;
- unsigned char toc;
- period = 0;
- while (framerate < 400)
- {
- framerate <<= 1;
- period++;
- }
- if (mode == MODE_SILK_ONLY)
- {
- toc = (bandwidth-OPUS_BANDWIDTH_NARROWBAND)<<5;
- toc |= (period-2)<<3;
- } else if (mode == MODE_CELT_ONLY)
- {
- int tmp = bandwidth-OPUS_BANDWIDTH_MEDIUMBAND;
- if (tmp < 0)
- tmp = 0;
- toc = 0x80;
- toc |= tmp << 5;
- toc |= period<<3;
- } else /* Hybrid */
- {
- toc = 0x60;
- toc |= (bandwidth-OPUS_BANDWIDTH_SUPERWIDEBAND)<<4;
- toc |= (period-2)<<3;
- }
- toc |= (channels==2)<<2;
- return toc;
-}
-
-#ifndef OPUS_FIXED_POINT
-static void silk_biquad_float(
- const opus_val16 *in, /* I: Input signal */
- const opus_int32 *B_Q28, /* I: MA coefficients [3] */
- const opus_int32 *A_Q28, /* I: AR coefficients [2] */
- opus_val32 *S, /* I/O: State vector [2] */
- opus_val16 *out, /* O: Output signal */
- const opus_int32 len, /* I: Signal length (must be even) */
- int stride
-)
-{
- /* DIRECT FORM II TRANSPOSED (uses 2 element state vector) */
- opus_int k;
- opus_val32 vout;
- opus_val32 inval;
- opus_val32 A[2], B[3];
-
- A[0] = (opus_val32)(A_Q28[0] * (1.f/((opus_int32)1<<28)));
- A[1] = (opus_val32)(A_Q28[1] * (1.f/((opus_int32)1<<28)));
- B[0] = (opus_val32)(B_Q28[0] * (1.f/((opus_int32)1<<28)));
- B[1] = (opus_val32)(B_Q28[1] * (1.f/((opus_int32)1<<28)));
- B[2] = (opus_val32)(B_Q28[2] * (1.f/((opus_int32)1<<28)));
-
- /* Negate A_Q28 values and split in two parts */
-
- for( k = 0; k < len; k++ ) {
- /* S[ 0 ], S[ 1 ]: Q12 */
- inval = in[ k*stride ];
- vout = S[ 0 ] + B[0]*inval;
-
- S[ 0 ] = S[1] - vout*A[0] + B[1]*inval;
-
- S[ 1 ] = - vout*A[1] + B[2]*inval + VERY_SMALL;
-
- /* Scale back to Q0 and saturate */
- out[ k*stride ] = vout;
- }
-}
-#endif
-
-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)
-{
- opus_int32 B_Q28[ 3 ], A_Q28[ 2 ];
- opus_int32 Fc_Q19, r_Q28, r_Q22;
-
- silk_assert( cutoff_Hz <= silk_int32_MAX / SILK_FIX_CONST( 1.5 * 3.14159 / 1000, 19 ) );
- Fc_Q19 = silk_DIV32_16( silk_SMULBB( SILK_FIX_CONST( 1.5 * 3.14159 / 1000, 19 ), cutoff_Hz ), Fs/1000 );
- silk_assert( Fc_Q19 > 0 && Fc_Q19 < 32768 );
-
- r_Q28 = SILK_FIX_CONST( 1.0, 28 ) - silk_MUL( SILK_FIX_CONST( 0.92, 9 ), Fc_Q19 );
-
- /* b = r * [ 1; -2; 1 ]; */
- /* a = [ 1; -2 * r * ( 1 - 0.5 * Fc^2 ); r^2 ]; */
- B_Q28[ 0 ] = r_Q28;
- B_Q28[ 1 ] = silk_LSHIFT( -r_Q28, 1 );
- B_Q28[ 2 ] = r_Q28;
-
- /* -r * ( 2 - Fc * Fc ); */
- r_Q22 = silk_RSHIFT( r_Q28, 6 );
- A_Q28[ 0 ] = silk_SMULWW( r_Q22, silk_SMULWW( Fc_Q19, Fc_Q19 ) - SILK_FIX_CONST( 2.0, 22 ) );
- A_Q28[ 1 ] = silk_SMULWW( r_Q22, r_Q22 );
-
-#ifdef OPUS_FIXED_POINT
- silk_biquad_alt( in, B_Q28, A_Q28, hp_mem, out, len, channels );
- if( channels == 2 ) {
- silk_biquad_alt( in+1, B_Q28, A_Q28, hp_mem+2, out+1, len, channels );
- }
-#else
- silk_biquad_float( in, B_Q28, A_Q28, hp_mem, out, len, channels );
- if( channels == 2 ) {
- silk_biquad_float( in+1, B_Q28, A_Q28, hp_mem+2, out+1, len, channels );
- }
-#endif
-}
-
-#ifdef OPUS_FIXED_POINT
-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)
-{
- int c, i;
- int shift;
-
- /* Approximates -round(log2(4.*cutoff_Hz/Fs)) */
- shift=celt_ilog2(Fs/(cutoff_Hz*3));
- for (c=0;c<channels;c++)
- {
- for (i=0;i<len;i++)
- {
- opus_val32 x, tmp, y;
- x = SHL32(EXTEND32(in[channels*i+c]), 15);
- /* First stage */
- tmp = x-hp_mem[2*c];
- hp_mem[2*c] = hp_mem[2*c] + PSHR32(x - hp_mem[2*c], shift);
- /* Second stage */
- y = tmp - hp_mem[2*c+1];
- hp_mem[2*c+1] = hp_mem[2*c+1] + PSHR32(tmp - hp_mem[2*c+1], shift);
- out[channels*i+c] = EXTRACT16(SATURATE(PSHR32(y, 15), 32767));
- }
- }
-}
-
-#else
-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)
-{
- int c, i;
- float coef;
-
- coef = 4.0f*cutoff_Hz/Fs;
- for (c=0;c<channels;c++)
- {
- for (i=0;i<len;i++)
- {
- opus_val32 x, tmp, y;
- x = in[channels*i+c];
- /* First stage */
- tmp = x-hp_mem[2*c];
- hp_mem[2*c] = hp_mem[2*c] + coef*(x - hp_mem[2*c]) + VERY_SMALL;
- /* Second stage */
- y = tmp - hp_mem[2*c+1];
- hp_mem[2*c+1] = hp_mem[2*c+1] + coef*(tmp - hp_mem[2*c+1]) + VERY_SMALL;
- out[channels*i+c] = y;
- }
- }
-}
-#endif
-
-static void stereo_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 overlap;
- int inc;
- inc = 48000/Fs;
- overlap=overlap48/inc;
- g1 = Q15ONE-g1;
- g2 = Q15ONE-g2;
- for (i=0;i<overlap;i++)
- {
- opus_val32 diff;
- 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);
- diff = EXTRACT16(HALF32((opus_val32)in[i*channels] - (opus_val32)in[i*channels+1]));
- diff = MULT16_16_Q15(g, diff);
- out[i*channels] = out[i*channels] - diff;
- out[i*channels+1] = out[i*channels+1] + diff;
- }
- for (;i<frame_size;i++)
- {
- opus_val32 diff;
- diff = EXTRACT16(HALF32((opus_val32)in[i*channels] - (opus_val32)in[i*channels+1]));
- diff = MULT16_16_Q15(g2, diff);
- out[i*channels] = out[i*channels] - diff;
- out[i*channels+1] = out[i*channels+1] + diff;
- }
-}
-
-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;
-}
-
-static int optimize_framesize(const void *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;
- int offset;
- 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 */
- offset = 2*subframe - buffering;
- celt_assert(offset>=0 && offset <= subframe);
- 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;
- offset=0;
- }
- 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+offset, 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
-#else
- (void)analysis_pcm;
- (void)C;
- (void)bitrate_bps;
- (void)delay_compensation;
- (void)downmix;
-#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, int float_api)
-{
- 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;
-#ifndef DISABLE_FLOAT_API
- AnalysisInfo analysis_info;
- int analysis_read_pos_bak=-1;
- int analysis_read_subframe_bak=-1;
-#endif
- 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);
-
- celt_encoder_ctl(celt_enc, CELT_GET_MODE(&celt_mode));
-#ifndef DISABLE_FLOAT_API
- analysis_info.valid = 0;
-#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);
- }
-#else
- (void)analysis_pcm;
- (void)analysis_size;
-#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, float_api);
- 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);
- OPUS_COPY(pcm_buf, &st->delay_buffer[(st->encoder_buffer-total_buffer)*st->channels], total_buffer*st->channels);
-
- 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);
- }
-#ifndef OPUS_FIXED_POINT
- if (float_api)
- {
- opus_val32 sum;
- sum = celt_inner_prod(&pcm_buf[total_buffer*st->channels], &pcm_buf[total_buffer*st->channels], frame_size*st->channels, st->arch);
- /* This should filter out both NaNs and ridiculous signals that could
- cause NaNs further down. */
- if (!(sum < 1e9f) || celt_isnan(sum))
- {
- OPUS_CLEAR(&pcm_buf[total_buffer*st->channels], frame_size*st->channels);
- st->hp_mem[0] = st->hp_mem[1] = st->hp_mem[2] = st->hp_mem[3] = 0;
- }
- }
-#endif
-
-
- /* 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);
- OPUS_CLEAR(st->delay_buffer, prefill_offset);
-#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)
- {
- OPUS_COPY(tmp_prefill, &st->delay_buffer[(st->encoder_buffer-total_buffer-st->Fs/400)*st->channels], st->channels*st->Fs/400);
- }
-
- if (st->channels*(st->encoder_buffer-(frame_size+total_buffer)) > 0)
- {
- OPUS_MOVE(st->delay_buffer, &st->delay_buffer[st->channels*frame_size], st->channels*(st->encoder_buffer-frame_size-total_buffer));
- OPUS_COPY(&st->delay_buffer[st->channels*(st->encoder_buffer-frame_size-total_buffer)],
- &pcm_buf[0],
- (frame_size+total_buffer)*st->channels);
- } else {
- OPUS_COPY(st->delay_buffer, &pcm_buf[(frame_size+total_buffer-st->encoder_buffer)*st->channels], st->encoder_buffer*st->channels);
- }
- /* 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, 1);
- 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, 0);
-}
-
-#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, 0);
- 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, 1);
-}
-#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;
- char *start;
- silk_enc = (char*)st+st->silk_enc_offset;
-#ifndef DISABLE_FLOAT_API
- tonality_analysis_reset(&st->analysis);
-#endif
-
- start = (char*)&st->OPUS_ENCODER_RESET_START;
- OPUS_CLEAR(start, sizeof(OpusEncoder) - (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);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 01:49:38 +0000