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Unified Diff: third_party/opus/src/silk/fixed/encode_frame_FIX.c

Issue 2962373002: [Opus] Update to v1.2.1 (Closed)
Patch Set: Pre-increment instead of post-increment Created 3 years, 5 months ago
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Index: third_party/opus/src/silk/fixed/encode_frame_FIX.c
diff --git a/third_party/opus/src/silk/fixed/encode_frame_FIX.c b/third_party/opus/src/silk/fixed/encode_frame_FIX.c
index 5ef44b03fc4c585999bcec28235e0ed4a55486b1..4f9e08610ef3490474d670c0e498a54d58a6f917 100644
--- a/third_party/opus/src/silk/fixed/encode_frame_FIX.c
+++ b/third_party/opus/src/silk/fixed/encode_frame_FIX.c
@@ -29,6 +29,7 @@ POSSIBILITY OF SUCH DAMAGE.
#include "config.h"
#endif
+#include <stdlib.h>
#include "main_FIX.h"
#include "stack_alloc.h"
#include "tuning_parameters.h"
@@ -37,7 +38,7 @@ POSSIBILITY OF SUCH DAMAGE.
static OPUS_INLINE void silk_LBRR_encode_FIX(
silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */
silk_encoder_control_FIX *psEncCtrl, /* I/O Pointer to Silk FIX encoder control struct */
- const opus_int32 xfw_Q3[], /* I Input signal */
+ const opus_int16 x16[], /* I Input signal */
opus_int condCoding /* I The type of conditional coding used so far for this frame */
);
@@ -94,6 +95,9 @@ opus_int silk_encode_frame_FIX(
opus_int16 ec_prevLagIndex_copy;
opus_int ec_prevSignalType_copy;
opus_int8 LastGainIndex_copy2;
+ opus_int gain_lock[ MAX_NB_SUBFR ] = {0};
+ opus_int16 best_gain_mult[ MAX_NB_SUBFR ];
+ opus_int best_sum[ MAX_NB_SUBFR ];
SAVE_STACK;
/* This is totally unnecessary but many compilers (including gcc) are too dumb to realise it */
@@ -118,7 +122,6 @@ opus_int silk_encode_frame_FIX(
silk_memcpy( x_frame + LA_SHAPE_MS * psEnc->sCmn.fs_kHz, psEnc->sCmn.inputBuf + 1, psEnc->sCmn.frame_length * sizeof( opus_int16 ) );
if( !psEnc->sCmn.prefillFlag ) {
- VARDECL( opus_int32, xfw_Q3 );
VARDECL( opus_int16, res_pitch );
VARDECL( opus_uint8, ec_buf_copy );
opus_int16 *res_pitch_frame;
@@ -132,7 +135,7 @@ opus_int silk_encode_frame_FIX(
/*****************************************/
/* Find pitch lags, initial LPC analysis */
/*****************************************/
- silk_find_pitch_lags_FIX( psEnc, &sEncCtrl, res_pitch, x_frame, psEnc->sCmn.arch );
+ silk_find_pitch_lags_FIX( psEnc, &sEncCtrl, res_pitch, x_frame - psEnc->sCmn.ltp_mem_length, psEnc->sCmn.arch );
/************************/
/* Noise shape analysis */
@@ -142,23 +145,17 @@ opus_int silk_encode_frame_FIX(
/***************************************************/
/* Find linear prediction coefficients (LPC + LTP) */
/***************************************************/
- silk_find_pred_coefs_FIX( psEnc, &sEncCtrl, res_pitch, x_frame, condCoding );
+ silk_find_pred_coefs_FIX( psEnc, &sEncCtrl, res_pitch_frame, x_frame, condCoding );
/****************************************/
/* Process gains */
/****************************************/
silk_process_gains_FIX( psEnc, &sEncCtrl, condCoding );
- /*****************************************/
- /* Prefiltering for noise shaper */
- /*****************************************/
- ALLOC( xfw_Q3, psEnc->sCmn.frame_length, opus_int32 );
- silk_prefilter_FIX( psEnc, &sEncCtrl, xfw_Q3, x_frame );
-
/****************************************/
/* Low Bitrate Redundant Encoding */
/****************************************/
- silk_LBRR_encode_FIX( psEnc, &sEncCtrl, xfw_Q3, condCoding );
+ silk_LBRR_encode_FIX( psEnc, &sEncCtrl, x_frame, condCoding );
/* Loop over quantizer and entropy coding to control bitrate */
maxIter = 6;
@@ -194,17 +191,21 @@ opus_int silk_encode_frame_FIX(
/* Noise shaping quantization */
/*****************************************/
if( psEnc->sCmn.nStatesDelayedDecision > 1 || psEnc->sCmn.warping_Q16 > 0 ) {
- silk_NSQ_del_dec( &psEnc->sCmn, &psEnc->sCmn.sNSQ, &psEnc->sCmn.indices, xfw_Q3, psEnc->sCmn.pulses,
- sEncCtrl.PredCoef_Q12[ 0 ], sEncCtrl.LTPCoef_Q14, sEncCtrl.AR2_Q13, sEncCtrl.HarmShapeGain_Q14,
+ silk_NSQ_del_dec( &psEnc->sCmn, &psEnc->sCmn.sNSQ, &psEnc->sCmn.indices, x_frame, psEnc->sCmn.pulses,
+ sEncCtrl.PredCoef_Q12[ 0 ], sEncCtrl.LTPCoef_Q14, sEncCtrl.AR_Q13, sEncCtrl.HarmShapeGain_Q14,
sEncCtrl.Tilt_Q14, sEncCtrl.LF_shp_Q14, sEncCtrl.Gains_Q16, sEncCtrl.pitchL, sEncCtrl.Lambda_Q10, sEncCtrl.LTP_scale_Q14,
psEnc->sCmn.arch );
} else {
- silk_NSQ( &psEnc->sCmn, &psEnc->sCmn.sNSQ, &psEnc->sCmn.indices, xfw_Q3, psEnc->sCmn.pulses,
- sEncCtrl.PredCoef_Q12[ 0 ], sEncCtrl.LTPCoef_Q14, sEncCtrl.AR2_Q13, sEncCtrl.HarmShapeGain_Q14,
+ silk_NSQ( &psEnc->sCmn, &psEnc->sCmn.sNSQ, &psEnc->sCmn.indices, x_frame, psEnc->sCmn.pulses,
+ sEncCtrl.PredCoef_Q12[ 0 ], sEncCtrl.LTPCoef_Q14, sEncCtrl.AR_Q13, sEncCtrl.HarmShapeGain_Q14,
sEncCtrl.Tilt_Q14, sEncCtrl.LF_shp_Q14, sEncCtrl.Gains_Q16, sEncCtrl.pitchL, sEncCtrl.Lambda_Q10, sEncCtrl.LTP_scale_Q14,
psEnc->sCmn.arch);
}
+ if ( iter == maxIter && !found_lower ) {
+ silk_memcpy( &sRangeEnc_copy2, psRangeEnc, sizeof( ec_enc ) );
+ }
+
/****************************************/
/* Encode Parameters */
/****************************************/
@@ -218,6 +219,33 @@ opus_int silk_encode_frame_FIX(
nBits = ec_tell( psRangeEnc );
+ /* If we still bust after the last iteration, do some damage control. */
+ if ( iter == maxIter && !found_lower && nBits > maxBits ) {
+ silk_memcpy( psRangeEnc, &sRangeEnc_copy2, sizeof( ec_enc ) );
+
+ /* Keep gains the same as the last frame. */
+ psEnc->sShape.LastGainIndex = sEncCtrl.lastGainIndexPrev;
+ for ( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
+ psEnc->sCmn.indices.GainsIndices[ i ] = 4;
+ }
+ if (condCoding != CODE_CONDITIONALLY) {
+ psEnc->sCmn.indices.GainsIndices[ 0 ] = sEncCtrl.lastGainIndexPrev;
+ }
+ psEnc->sCmn.ec_prevLagIndex = ec_prevLagIndex_copy;
+ psEnc->sCmn.ec_prevSignalType = ec_prevSignalType_copy;
+ /* Clear all pulses. */
+ for ( i = 0; i < psEnc->sCmn.frame_length; i++ ) {
+ psEnc->sCmn.pulses[ i ] = 0;
+ }
+
+ silk_encode_indices( &psEnc->sCmn, psRangeEnc, psEnc->sCmn.nFramesEncoded, 0, condCoding );
+
+ silk_encode_pulses( psRangeEnc, psEnc->sCmn.indices.signalType, psEnc->sCmn.indices.quantOffsetType,
+ psEnc->sCmn.pulses, psEnc->sCmn.frame_length );
+
+ nBits = ec_tell( psRangeEnc );
+ }
+
if( useCBR == 0 && iter == 0 && nBits <= maxBits ) {
break;
}
@@ -265,15 +293,35 @@ opus_int silk_encode_frame_FIX(
break;
}
+ if ( !found_lower && nBits > maxBits ) {
+ int j;
+ for ( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
+ int sum=0;
+ for ( j = i*psEnc->sCmn.subfr_length; j < (i+1)*psEnc->sCmn.subfr_length; j++ ) {
+ sum += abs( psEnc->sCmn.pulses[j] );
+ }
+ if ( iter == 0 || (sum < best_sum[i] && !gain_lock[i]) ) {
+ best_sum[i] = sum;
+ best_gain_mult[i] = gainMult_Q8;
+ } else {
+ gain_lock[i] = 1;
+ }
+ }
+ }
if( ( found_lower & found_upper ) == 0 ) {
/* Adjust gain according to high-rate rate/distortion curve */
- opus_int32 gain_factor_Q16;
- gain_factor_Q16 = silk_log2lin( silk_LSHIFT( nBits - maxBits, 7 ) / psEnc->sCmn.frame_length + SILK_FIX_CONST( 16, 7 ) );
- gain_factor_Q16 = silk_min_32( gain_factor_Q16, SILK_FIX_CONST( 2, 16 ) );
if( nBits > maxBits ) {
- gain_factor_Q16 = silk_max_32( gain_factor_Q16, SILK_FIX_CONST( 1.3, 16 ) );
+ if (gainMult_Q8 < 16384) {
+ gainMult_Q8 *= 2;
+ } else {
+ gainMult_Q8 = 32767;
+ }
+ } else {
+ opus_int32 gain_factor_Q16;
+ gain_factor_Q16 = silk_log2lin( silk_LSHIFT( nBits - maxBits, 7 ) / psEnc->sCmn.frame_length + SILK_FIX_CONST( 16, 7 ) );
+ gainMult_Q8 = silk_SMULWB( gain_factor_Q16, gainMult_Q8 );
}
- gainMult_Q8 = silk_SMULWB( gain_factor_Q16, gainMult_Q8 );
+
} else {
/* Adjust gain by interpolating */
gainMult_Q8 = gainMult_lower + silk_DIV32_16( silk_MUL( gainMult_upper - gainMult_lower, maxBits - nBits_lower ), nBits_upper - nBits_lower );
@@ -287,7 +335,13 @@ opus_int silk_encode_frame_FIX(
}
for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
- sEncCtrl.Gains_Q16[ i ] = silk_LSHIFT_SAT32( silk_SMULWB( sEncCtrl.GainsUnq_Q16[ i ], gainMult_Q8 ), 8 );
+ opus_int16 tmp;
+ if ( gain_lock[i] ) {
+ tmp = best_gain_mult[i];
+ } else {
+ tmp = gainMult_Q8;
+ }
+ sEncCtrl.Gains_Q16[ i ] = silk_LSHIFT_SAT32( silk_SMULWB( sEncCtrl.GainsUnq_Q16[ i ], tmp ), 8 );
}
/* Quantize gains */
@@ -331,7 +385,7 @@ opus_int silk_encode_frame_FIX(
static OPUS_INLINE void silk_LBRR_encode_FIX(
silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */
silk_encoder_control_FIX *psEncCtrl, /* I/O Pointer to Silk FIX encoder control struct */
- const opus_int32 xfw_Q3[], /* I Input signal */
+ const opus_int16 x16[], /* I Input signal */
opus_int condCoding /* I The type of conditional coding used so far for this frame */
)
{
@@ -370,14 +424,14 @@ static OPUS_INLINE void silk_LBRR_encode_FIX(
/* Noise shaping quantization */
/*****************************************/
if( psEnc->sCmn.nStatesDelayedDecision > 1 || psEnc->sCmn.warping_Q16 > 0 ) {
- silk_NSQ_del_dec( &psEnc->sCmn, &sNSQ_LBRR, psIndices_LBRR, xfw_Q3,
+ silk_NSQ_del_dec( &psEnc->sCmn, &sNSQ_LBRR, psIndices_LBRR, x16,
psEnc->sCmn.pulses_LBRR[ psEnc->sCmn.nFramesEncoded ], psEncCtrl->PredCoef_Q12[ 0 ], psEncCtrl->LTPCoef_Q14,
- psEncCtrl->AR2_Q13, psEncCtrl->HarmShapeGain_Q14, psEncCtrl->Tilt_Q14, psEncCtrl->LF_shp_Q14,
+ psEncCtrl->AR_Q13, psEncCtrl->HarmShapeGain_Q14, psEncCtrl->Tilt_Q14, psEncCtrl->LF_shp_Q14,
psEncCtrl->Gains_Q16, psEncCtrl->pitchL, psEncCtrl->Lambda_Q10, psEncCtrl->LTP_scale_Q14, psEnc->sCmn.arch );
} else {
- silk_NSQ( &psEnc->sCmn, &sNSQ_LBRR, psIndices_LBRR, xfw_Q3,
+ silk_NSQ( &psEnc->sCmn, &sNSQ_LBRR, psIndices_LBRR, x16,
psEnc->sCmn.pulses_LBRR[ psEnc->sCmn.nFramesEncoded ], psEncCtrl->PredCoef_Q12[ 0 ], psEncCtrl->LTPCoef_Q14,
- psEncCtrl->AR2_Q13, psEncCtrl->HarmShapeGain_Q14, psEncCtrl->Tilt_Q14, psEncCtrl->LF_shp_Q14,
+ psEncCtrl->AR_Q13, psEncCtrl->HarmShapeGain_Q14, psEncCtrl->Tilt_Q14, psEncCtrl->LF_shp_Q14,
psEncCtrl->Gains_Q16, psEncCtrl->pitchL, psEncCtrl->Lambda_Q10, psEncCtrl->LTP_scale_Q14, psEnc->sCmn.arch );
}
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