ref: 132ed59464dccaae8f1e2f13f168763e99f85d17
parent: e619ea76bfaec2b17d09d9c4283c0343d2c10e3f
author: Jean-Marc Valin <[email protected]>
date: Fri Nov 4 07:41:13 EDT 2016
Removes OPUS_FRAMESIZE_VARIABLE That experiment never actually worked
--- a/celt/celt.h
+++ b/celt/celt.h
@@ -74,9 +74,6 @@
/* Encoder/decoder Requests */
-/* Expose this option again when variable framesize actually works */
-#define OPUS_FRAMESIZE_VARIABLE 5010 /**< Optimize the frame size dynamically */
-
#define CELT_SET_PREDICTION_REQUEST 10002
/** Controls the use of interframe prediction.
--- a/celt/celt_encoder.c
+++ b/celt/celt_encoder.c
@@ -73,7 +73,6 @@
int constrained_vbr; /* If zero, VBR can do whatever it likes with the rate */
int loss_rate;
int lsb_depth;
- int variable_duration;
int lfe;
int disable_inv;
int arch;
@@ -1220,7 +1219,7 @@
int LM, opus_int32 bitrate, int lastCodedBands, int C, int intensity,
int constrained_vbr, opus_val16 stereo_saving, int tot_boost,
opus_val16 tf_estimate, int pitch_change, opus_val16 maxDepth,
- int variable_duration, int lfe, int has_surround_mask, opus_val16 surround_masking,
+ int lfe, int has_surround_mask, opus_val16 surround_masking,
opus_val16 temporal_vbr)
{/* The target rate in 8th bits per frame */
@@ -1264,8 +1263,7 @@
/* Boost the rate according to dynalloc (minus the dynalloc average for calibration). */
target += tot_boost-(16<<LM);
/* Apply transient boost, compensating for average boost. */
- tf_calibration = variable_duration==OPUS_FRAMESIZE_VARIABLE ?
- QCONST16(0.02f,14) : QCONST16(0.04f,14);
+ tf_calibration = QCONST16(0.04f,14);
target += (opus_int32)SHL32(MULT16_32_Q15(tf_estimate-tf_calibration, target),1);
#ifndef DISABLE_FLOAT_API
@@ -1582,7 +1580,7 @@
int enabled;
int qg;
enabled = ((st->lfe&&nbAvailableBytes>3) || nbAvailableBytes>12*C) && !hybrid && !silence && !st->disable_pf
- && st->complexity >= 5 && !(st->consec_transient && LM!=3 && st->variable_duration==OPUS_FRAMESIZE_VARIABLE);
+ && st->complexity >= 5;
prefilter_tapset = st->tapset_decision;
pf_on = run_prefilter(st, in, prefilter_mem, CC, N, prefilter_tapset, &pitch_index, &gain1, &qg, enabled, nbAvailableBytes);
@@ -1990,7 +1988,7 @@
target = compute_vbr(mode, &st->analysis, base_target, LM, equiv_rate,
st->lastCodedBands, C, st->intensity, st->constrained_vbr,
st->stereo_saving, tot_boost, tf_estimate, pitch_change, maxDepth,
- st->variable_duration, st->lfe, st->energy_mask!=NULL, surround_masking,
+ st->lfe, st->energy_mask!=NULL, surround_masking,
temporal_vbr);
} else {target = base_target;
@@ -2407,12 +2405,6 @@
{opus_int32 *value = va_arg(ap, opus_int32*);
*value=st->lsb_depth;
- }
- break;
- case OPUS_SET_EXPERT_FRAME_DURATION_REQUEST:
- {- opus_int32 value = va_arg(ap, opus_int32);
- st->variable_duration = value;
}
break;
case OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST:
--- a/include/opus_defines.h
+++ b/include/opus_defines.h
@@ -573,7 +573,6 @@
* <dt>OPUS_FRAMESIZE_80_MS</dt><dd>Use 80 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_100_MS</dt><dd>Use 100 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_120_MS</dt><dd>Use 120 ms frames.</dd>
- * <dt>OPUS_FRAMESIZE_VARIABLE</dt><dd>Optimize the frame size dynamically.</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_EXPERT_FRAME_DURATION(x) OPUS_SET_EXPERT_FRAME_DURATION_REQUEST, __opus_check_int(x)
@@ -591,7 +590,6 @@
* <dt>OPUS_FRAMESIZE_80_MS</dt><dd>Use 80 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_100_MS</dt><dd>Use 100 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_120_MS</dt><dd>Use 120 ms frames.</dd>
- * <dt>OPUS_FRAMESIZE_VARIABLE</dt><dd>Optimize the frame size dynamically.</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_EXPERT_FRAME_DURATION(x) OPUS_GET_EXPERT_FRAME_DURATION_REQUEST, __opus_check_int_ptr(x)
--- a/src/analysis.h
+++ b/src/analysis.h
@@ -62,7 +62,6 @@
int last_music;
int last_transition;
int count;
- float subframe_mem[3];
int analysis_offset;
/** Probability of having speech for time i to DETECT_SIZE-1 (and music before).
pspeech[0] is the probability that all frames in the window are speech. */
--- a/src/opus_demo.c
+++ b/src/opus_demo.c
@@ -415,10 +415,6 @@
check_encoder_option(decode_only, "-cvbr");
cvbr = 1;
args++;
- } else if( strcmp( argv[ args ], "-variable-duration" ) == 0 ) {- check_encoder_option(decode_only, "-variable-duration");
- variable_duration = OPUS_FRAMESIZE_VARIABLE;
- args++;
} else if( strcmp( argv[ args ], "-delayed-decision" ) == 0 ) {check_encoder_option(decode_only, "-delayed-decision");
delayed_decision = 1;
@@ -606,28 +602,25 @@
}
if(delayed_decision)
{- if (variable_duration!=OPUS_FRAMESIZE_VARIABLE)
- {- if (frame_size==sampling_rate/400)
- variable_duration = OPUS_FRAMESIZE_2_5_MS;
- else if (frame_size==sampling_rate/200)
- variable_duration = OPUS_FRAMESIZE_5_MS;
- else if (frame_size==sampling_rate/100)
- variable_duration = OPUS_FRAMESIZE_10_MS;
- else if (frame_size==sampling_rate/50)
- variable_duration = OPUS_FRAMESIZE_20_MS;
- else if (frame_size==sampling_rate/25)
- variable_duration = OPUS_FRAMESIZE_40_MS;
- else if (frame_size==3*sampling_rate/50)
- variable_duration = OPUS_FRAMESIZE_60_MS;
- else if (frame_size==4*sampling_rate/50)
- variable_duration = OPUS_FRAMESIZE_80_MS;
- else if (frame_size==5*sampling_rate/50)
- variable_duration = OPUS_FRAMESIZE_100_MS;
- else
- variable_duration = OPUS_FRAMESIZE_120_MS;
- opus_encoder_ctl(enc, OPUS_SET_EXPERT_FRAME_DURATION(variable_duration));
- }
+ if (frame_size==sampling_rate/400)
+ variable_duration = OPUS_FRAMESIZE_2_5_MS;
+ else if (frame_size==sampling_rate/200)
+ variable_duration = OPUS_FRAMESIZE_5_MS;
+ else if (frame_size==sampling_rate/100)
+ variable_duration = OPUS_FRAMESIZE_10_MS;
+ else if (frame_size==sampling_rate/50)
+ variable_duration = OPUS_FRAMESIZE_20_MS;
+ else if (frame_size==sampling_rate/25)
+ variable_duration = OPUS_FRAMESIZE_40_MS;
+ else if (frame_size==3*sampling_rate/50)
+ variable_duration = OPUS_FRAMESIZE_60_MS;
+ else if (frame_size==4*sampling_rate/50)
+ variable_duration = OPUS_FRAMESIZE_80_MS;
+ else if (frame_size==5*sampling_rate/50)
+ variable_duration = OPUS_FRAMESIZE_100_MS;
+ else
+ variable_duration = OPUS_FRAMESIZE_120_MS;
+ opus_encoder_ctl(enc, OPUS_SET_EXPERT_FRAME_DURATION(variable_duration));
frame_size = 2*48000;
}
while (!stop)
--- a/src/opus_encoder.c
+++ b/src/opus_encoder.c
@@ -572,215 +572,6 @@
}
#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 FIXED_POINT
#define PCM2VAL(x) FLOAT2INT16(x)
#else
@@ -862,8 +653,6 @@
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_120_MS)
{if (variable_duration <= OPUS_FRAMESIZE_40_MS)
@@ -882,39 +671,6 @@
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_val32 xx, xy, yy;
@@ -2140,18 +1896,9 @@
} 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));
+ celt_encoder_ctl(celt_enc, OPUS_SET_BITRATE(st->bitrate_bps));
}
}
}
@@ -2420,17 +2167,10 @@
{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);
+ frame_size = frame_size_select(analysis_frame_size, st->variable_duration, st->Fs);
ALLOC(in, frame_size*st->channels, opus_int16);
@@ -2447,18 +2187,7 @@
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
- );
+ frame_size = frame_size_select(analysis_frame_size, st->variable_duration, st->Fs);
return opus_encode_native(st, pcm, frame_size, data, out_data_bytes, 16,
pcm, analysis_frame_size, 0, -2, st->channels, downmix_int, 0);
}
@@ -2469,17 +2198,10 @@
{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);
+ frame_size = frame_size_select(analysis_frame_size, st->variable_duration, st->Fs);
ALLOC(in, frame_size*st->channels, float);
@@ -2494,14 +2216,7 @@
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);
+ frame_size = frame_size_select(analysis_frame_size, st->variable_duration, st->Fs);
return opus_encode_native(st, pcm, frame_size, data, out_data_bytes, 24,
pcm, analysis_frame_size, 0, -2, st->channels, downmix_float, 1);
}
@@ -2865,8 +2580,7 @@
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_80_MS &&
- value != OPUS_FRAMESIZE_100_MS && value != OPUS_FRAMESIZE_120_MS &&
- value != OPUS_FRAMESIZE_VARIABLE)
+ value != OPUS_FRAMESIZE_100_MS && value != OPUS_FRAMESIZE_120_MS)
{goto bad_arg;
}
--- a/src/opus_multistream_encoder.c
+++ b/src/opus_multistream_encoder.c
@@ -87,7 +87,6 @@
int variable_duration;
MappingType mapping_type;
opus_int32 bitrate_bps;
- float subframe_mem[3];
/* Encoder states go here */
/* then opus_val32 window_mem[channels*120]; */
/* then opus_val32 preemph_mem[channels]; */
@@ -461,7 +460,6 @@
st->layout.nb_channels = channels;
st->layout.nb_streams = streams;
st->layout.nb_coupled_streams = coupled_streams;
- st->subframe_mem[0]=st->subframe_mem[1]=st->subframe_mem[2]=0;
if (mapping_type != MAPPING_TYPE_SURROUND)
st->lfe_stream = -1;
st->bitrate_bps = OPUS_AUTO;
@@ -729,14 +727,6 @@
+ coupled_ratio*nb_coupled /* stereo */
+ nb_lfe*lfe_ratio;
channel_rate = 256*(opus_int64)(bitrate - lfe_offset*nb_lfe - stream_offset*(nb_coupled+nb_uncoupled) - channel_offset*nb_normal)/total;
-#ifndef FIXED_POINT
- if (st->variable_duration==OPUS_FRAMESIZE_VARIABLE && frame_size != Fs/50)
- {- opus_int32 bonus;
- bonus = 60*(Fs/frame_size-50);
- channel_rate += bonus;
- }
-#endif
for (i=0;i<st->layout.nb_streams;i++)
{@@ -788,14 +778,6 @@
total_rate * rate_ratio_den
/ (rate_ratio_den*num_channels + rate_ratio_num - rate_ratio_den);
-#ifndef FIXED_POINT
- if (st->variable_duration==OPUS_FRAMESIZE_VARIABLE && frame_size != Fs/50)
- {- opus_int32 bonus = 60*(Fs/frame_size-50);
- non_mono_rate += bonus;
- }
-#endif
-
rate[0] = total_rate - (num_channels - 1) * non_mono_rate;
for (i=1;i<st->layout.nb_streams;i++)
{@@ -887,13 +869,7 @@
opus_encoder_ctl((OpusEncoder*)ptr, OPUS_GET_LOOKAHEAD(&delay_compensation));
delay_compensation -= Fs/400;
- frame_size = compute_frame_size(pcm, analysis_frame_size,
- st->variable_duration, st->layout.nb_channels, Fs, st->bitrate_bps,
- delay_compensation, downmix
-#ifndef DISABLE_FLOAT_API
- , st->subframe_mem
-#endif
- );
+ frame_size = frame_size_select(analysis_frame_size, st->variable_duration, Fs);
}
if (400*frame_size < Fs)
@@ -1346,7 +1322,6 @@
case OPUS_RESET_STATE:
{int s;
- st->subframe_mem[0] = st->subframe_mem[1] = st->subframe_mem[2] = 0;
if (st->mapping_type == MAPPING_TYPE_SURROUND)
{OPUS_CLEAR(ms_get_preemph_mem(st), st->layout.nb_channels);
--- a/src/opus_private.h
+++ b/src/opus_private.h
@@ -92,14 +92,6 @@
opus_int32 frame_size_select(opus_int32 frame_size, int variable_duration, opus_int32 Fs);
-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
- );
-
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,