summaryrefslogtreecommitdiffstats
path: root/libSBRenc
diff options
context:
space:
mode:
Diffstat (limited to 'libSBRenc')
-rw-r--r--libSBRenc/src/env_est.cpp20
-rw-r--r--libSBRenc/src/sbr_encoder.cpp2
-rw-r--r--libSBRenc/src/sbr_rom.h4
-rw-r--r--libSBRenc/src/sbr_rom_enc.cpp17
4 files changed, 20 insertions, 23 deletions
diff --git a/libSBRenc/src/env_est.cpp b/libSBRenc/src/env_est.cpp
index 312e0ae..a9a7881 100644
--- a/libSBRenc/src/env_est.cpp
+++ b/libSBRenc/src/env_est.cpp
@@ -536,13 +536,18 @@ mhLoweringEnergy(FIXP_DBL nrg, INT M)
\return void
****************************************************************************/
-static FIXP_DBL
-nmhLoweringEnergy(FIXP_DBL nrg, FIXP_DBL nrgSum, INT M)
+static FIXP_DBL nmhLoweringEnergy(
+ FIXP_DBL nrg,
+ const FIXP_DBL nrgSum,
+ const INT nrgSum_scale,
+ const INT M
+ )
{
if (nrg>FL2FXCONST_DBL(0)) {
int sc=0;
/* gain = nrgSum / (nrg*(M+1)) */
FIXP_DBL gain = fMult(fDivNorm(nrgSum, nrg, &sc), GetInvInt(M+1));
+ sc += nrgSum_scale;
/* reduce nrg if gain smaller 1.f */
if ( !((sc>=0) && ( gain > ((FIXP_DBL)MAXVAL_DBL>>sc) )) ) {
@@ -616,6 +621,7 @@ calculateSbrEnvelope (FIXP_DBL **RESTRICT YBufferLeft, /*! energy buffer left *
FIXP_DBL pNrgLeft[QMF_MAX_TIME_SLOTS];
FIXP_DBL pNrgRight[QMF_MAX_TIME_SLOTS];
+ int envNrg_scale;
FIXP_DBL envNrgLeft = FL2FXCONST_DBL(0.0f);
FIXP_DBL envNrgRight = FL2FXCONST_DBL(0.0f);
int missingHarmonic[QMF_MAX_TIME_SLOTS];
@@ -625,6 +631,7 @@ calculateSbrEnvelope (FIXP_DBL **RESTRICT YBufferLeft, /*! energy buffer left *
stop_pos = timeStep * frame_info->borders[i + 1];
freq_res = frame_info->freqRes[i];
no_of_bands = h_con->nSfb[freq_res];
+ envNrg_scale = DFRACT_BITS-fNormz((FIXP_DBL)no_of_bands);
if (i == short_env) {
stop_pos -= fixMax(2, timeStep); /* consider at least 2 QMF slots less for short envelopes (envelopes just before transients) */
@@ -762,9 +769,8 @@ calculateSbrEnvelope (FIXP_DBL **RESTRICT YBufferLeft, /*! energy buffer left *
/* save energies */
pNrgLeft[j] = nrgLeft;
pNrgRight[j] = nrgRight;
- envNrgLeft = fAddSaturate(envNrgLeft, nrgLeft);
- envNrgRight = fAddSaturate(envNrgRight, nrgRight);
-
+ envNrgLeft += (nrgLeft>>envNrg_scale);
+ envNrgRight += (nrgRight>>envNrg_scale);
} /* j */
for (j = 0; j < no_of_bands; j++) {
@@ -777,9 +783,9 @@ calculateSbrEnvelope (FIXP_DBL **RESTRICT YBufferLeft, /*! energy buffer left *
if(!missingHarmonic[j] && h_sbr->fLevelProtect) {
/* in case of missing energy in base band,
reduce reference energy to prevent overflows in decoder output */
- nrgLeft = nmhLoweringEnergy(nrgLeft, envNrgLeft, no_of_bands);
+ nrgLeft = nmhLoweringEnergy(nrgLeft, envNrgLeft, envNrg_scale, no_of_bands);
if (stereoMode == SBR_COUPLING) {
- nrgRight = nmhLoweringEnergy(nrgRight, envNrgRight, no_of_bands);
+ nrgRight = nmhLoweringEnergy(nrgRight, envNrgRight, envNrg_scale, no_of_bands);
}
}
diff --git a/libSBRenc/src/sbr_encoder.cpp b/libSBRenc/src/sbr_encoder.cpp
index 0dcc1b2..e991199 100644
--- a/libSBRenc/src/sbr_encoder.cpp
+++ b/libSBRenc/src/sbr_encoder.cpp
@@ -103,7 +103,7 @@ amm-info@iis.fraunhofer.de
#define SBRENCODER_LIB_VL0 3
#define SBRENCODER_LIB_VL1 2
-#define SBRENCODER_LIB_VL2 1
+#define SBRENCODER_LIB_VL2 2
diff --git a/libSBRenc/src/sbr_rom.h b/libSBRenc/src/sbr_rom.h
index 4cd1ba5..e79a730 100644
--- a/libSBRenc/src/sbr_rom.h
+++ b/libSBRenc/src/sbr_rom.h
@@ -119,8 +119,8 @@ extern const INT bookSbrNoiseBalanceC11T[25];
extern const UCHAR bookSbrNoiseBalanceL11T[25];
#define SBRENC_AACLC_TUNING_SIZE 124
-#define SBRENC_AACELD_TUNING_SIZE 35
-#define SBRENC_AACELD2_TUNING_SIZE 31
+#define SBRENC_AACELD_TUNING_SIZE (26)
+#define SBRENC_AACELD2_TUNING_SIZE (26)
#define SBRENC_TUNING_SIZE (SBRENC_AACLC_TUNING_SIZE + SBRENC_AACELD_TUNING_SIZE)
diff --git a/libSBRenc/src/sbr_rom_enc.cpp b/libSBRenc/src/sbr_rom_enc.cpp
index 6fd51a2..c8b945f 100644
--- a/libSBRenc/src/sbr_rom_enc.cpp
+++ b/libSBRenc/src/sbr_rom_enc.cpp
@@ -588,7 +588,7 @@ const sbrTuningTable_t sbrTuningTable[SBRENC_TUNING_SIZE] =
{ 100000,160001, 44100, 1, 13,13,11,11, 2, 0, 3, SBR_MONO, 1 }, /* backwards compatible */
/* 48/96 kHz dual rate */ /* not yet finally tuned */
- { 24000, 36000, 48000, 1, 4, 4, 9, 9, 2, 0, 3, SBR_MONO, 3 }, /* lowest range (multichannel rear) */
+ { 32000, 36000, 48000, 1, 4, 4, 9, 9, 2, 0, 3, SBR_MONO, 3 }, /* lowest range (multichannel rear) */
{ 36000, 60000, 48000, 1, 7, 7,10,10, 2, 0, 3, SBR_MONO, 2 }, /* nominal: 40 */
{ 60000, 72000, 48000, 1, 9, 9,10,10, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 64 */
{ 72000,100000, 48000, 1, 11,11,11,11, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 80 */
@@ -671,7 +671,7 @@ const sbrTuningTable_t sbrTuningTable[SBRENC_TUNING_SIZE] =
{ 144000,256001, 44100, 2, 13,13,11,11, 3, 0, -3, SBR_LEFT_RIGHT, 1 }, /* backwards compatible */
/* 48/96 kHz dual rate */ /* not yet finally tuned */
- { 32000, 60000, 48000, 2, 4, 4, 9, 9, 2, 0, -3, SBR_SWITCH_LRC, 3 }, /* lowest range (multichannel rear) */
+ { 36000, 60000, 48000, 2, 4, 4, 9, 9, 2, 0, -3, SBR_SWITCH_LRC, 3 }, /* lowest range (multichannel rear) */
{ 60000, 80000, 48000, 2, 7, 7, 9, 9, 3, 0, -3, SBR_SWITCH_LRC, 2 }, /* nominal: 64 */
{ 80000,112000, 48000, 2, 9, 9,10,10, 3, 0, -3, SBR_LEFT_RIGHT, 1 }, /* nominal: 96 */
{ 112000,144000, 48000, 2, 11,11,11,11, 3, 0, -3, SBR_LEFT_RIGHT, 1 }, /* nominal: 128 */
@@ -680,9 +680,6 @@ const sbrTuningTable_t sbrTuningTable[SBRENC_TUNING_SIZE] =
/** AAC LOW DELAY SECTION **/
/* 22.05/44.1 kHz dual rate */
- { 8000, 11369, 22050, 1, 1, 1, 1, 1, 1, 0, 6, SBR_MONO, 3 }, /* nominal: 8 kbit/s */ /**changed (not changed !!)*/
- { 11369, 16000, 22050, 1, 1, 0, 3, 3, 1, 0, 6, SBR_MONO, 3 }, /* nominal: 12 kbit/s */
- { 16000, 18000, 22050, 1, 2, 4, 4, 3, 1, 0, 6, SBR_MONO, 3 }, /* nominal: 16 kbit/s */
{ 18000, 22000, 22050, 1, 4, 4, 5, 5, 2, 0, 6, SBR_MONO, 2 }, /* nominal: 20 kbit/s */
{ 22000, 28000, 22050, 1, 4, 4, 6, 5, 2, 0, 6, SBR_MONO, 2 }, /* nominal: 24 kbit/s */
{ 28000, 36000, 22050, 1, 7, 8, 8, 8, 2, 0, 3, SBR_MONO, 2 }, /* nominal: 32 kbit/s */
@@ -691,10 +688,7 @@ const sbrTuningTable_t sbrTuningTable[SBRENC_TUNING_SIZE] =
{ 52000, 64001, 22050, 1, 12,11,11,11, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 56 kbit/s */
/* 24/48 kHz dual rate */
- { 8000, 12000, 24000, 1, 1, 1, 1, 1, 1, 0, 6, SBR_MONO, 3 }, /* nominal: 8 kbit/s */ /**changed (not changed !!)*/
- { 12000, 16000, 24000, 1, 1, 0, 3, 3, 1, 0, 6, SBR_MONO, 3 }, /* nominal: 12 kbit/s */
- { 16000, 18000, 24000, 1, 2, 4, 4, 3, 1, 0, 6, SBR_MONO, 3 }, /* nominal: 16 kbit/s */
- { 18000, 22000, 24000, 1, 4, 4, 5, 5, 2, 0, 6, SBR_MONO, 2 }, /* nominal: 20 kbit/s */
+ { 20000, 22000, 24000, 1, 4, 4, 5, 5, 2, 0, 6, SBR_MONO, 2 }, /* nominal: 20 kbit/s */
{ 22000, 28000, 24000, 1, 4, 4, 6, 5, 2, 0, 6, SBR_MONO, 2 }, /* nominal: 24 kbit/s */
{ 28000, 36000, 24000, 1, 6, 8, 8, 8, 2, 0, 3, SBR_MONO, 2 }, /* nominal: 32 kbit/s */
{ 36000, 44000, 24000, 1, 8, 9, 9, 9, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 40 kbit/s */
@@ -702,8 +696,6 @@ const sbrTuningTable_t sbrTuningTable[SBRENC_TUNING_SIZE] =
{ 52000, 64001, 24000, 1, 13,11,11,10, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 48 kbit/s */
/* 22.05/44.1 kHz dual rate */
- { 24000, 28000, 22050, 2, 3, 2, 5, 4, 1, 0, -3, SBR_SWITCH_LRC, 3 }, /* nominal: 24 kbit/s */
- { 28000, 32000, 22050, 2, 3, 2, 7, 6, 2, 0, -3, SBR_SWITCH_LRC, 2 }, /* nominal: 28 kbit/s */
{ 32000, 36000, 22050, 2, 5, 4, 7, 6, 2, 0, -3, SBR_SWITCH_LRC, 2 }, /* nominal: 32 kbit/s */
{ 36000, 44000, 22050, 2, 5, 8, 8, 8, 2, 0, -3, SBR_SWITCH_LRC, 2 }, /* nominal: 40 kbit/s */
{ 44000, 52000, 22050, 2, 7,10, 8, 8, 3, 0, -3, SBR_SWITCH_LRC, 2 }, /* nominal: 48 kbit/s */
@@ -713,8 +705,7 @@ const sbrTuningTable_t sbrTuningTable[SBRENC_TUNING_SIZE] =
{ 82000,128001, 22050, 2, 13,12,11,11, 3, 0, -3, SBR_LEFT_RIGHT, 1 }, /* nominal: 80 kbit/s */
/* 24/48 kHz dual rate */
- { 24000, 28000, 24000, 2, 3, 3, 5, 5, 1, 0, -3, SBR_SWITCH_LRC, 3 }, /* nominal: 24 kbit/s */
- { 28000, 36000, 24000, 2, 5, 4, 7, 6, 2, 0, -3, SBR_SWITCH_LRC, 2 }, /* nominal: 32 kbit/s */
+ { 32000, 36000, 24000, 2, 5, 4, 7, 6, 2, 0, -3, SBR_SWITCH_LRC, 2 }, /* nominal: 32 kbit/s */
{ 36000, 44000, 24000, 2, 4, 8, 8, 8, 2, 0, -3, SBR_SWITCH_LRC, 2 }, /* nominal: 40 kbit/s */
{ 44000, 52000, 24000, 2, 6,10, 8, 8, 3, 0, -3, SBR_SWITCH_LRC, 2 }, /* nominal: 48 kbit/s */
{ 52000, 60000, 24000, 2, 9,11, 9, 9, 3, 0, -3, SBR_SWITCH_LRC, 1 }, /* nominal: 56 kbit/s */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 15:37:14 +0000