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authorJean-Michel Trivi <jmtrivi@google.com>2013-08-08 18:32:55 -0700
committerJean-Michel Trivi <jmtrivi@google.com>2013-08-20 15:31:42 -0700
commit16c472c201c197d3660334df5952eb4084897f9f (patch)
tree33f6729a47fb3a6021e9a6f6bc2c330fb17924e3 /libAACenc/src
parenta84864deb7c36b88f104f3116552d52d1ce64045 (diff)
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AAC encoder metadata improvement
AAC-Encoder - Introduce metadata support for parametric stereo audio object type. Write metadata matrix mixdown coefficient only for channel config 5 and 6. Modified file(s): libAACenc/src/aacenc_lib.cpp - Revise metadata encoder downmix gain and fix matrix mixdown coefficient. Modified file(s): libAACenc/src/aacenc_lib.cpp libAACenc/src/metadata_compressor.cpp libMpegTPEnc/src/tpenc_asc.cpp libMpegTPEnc/src/tpenc_lib.cpp libMpegTPEnc/src/version Bug 9428126 Change-Id: I87f5f1a1fdddd8223187aa0f9dc733e0ecc3e7e4
Diffstat (limited to 'libAACenc/src')
-rw-r--r--libAACenc/src/aacenc_lib.cpp11
-rw-r--r--libAACenc/src/metadata_compressor.cpp10
2 files changed, 13 insertions, 8 deletions
diff --git a/libAACenc/src/aacenc_lib.cpp b/libAACenc/src/aacenc_lib.cpp
index 161ed1c..a256f05 100644
--- a/libAACenc/src/aacenc_lib.cpp
+++ b/libAACenc/src/aacenc_lib.cpp
@@ -98,7 +98,7 @@ amm-info@iis.fraunhofer.de
/* Encoder library info */
#define AACENCODER_LIB_VL0 3
#define AACENCODER_LIB_VL1 4
-#define AACENCODER_LIB_VL2 6
+#define AACENCODER_LIB_VL2 7
#define AACENCODER_LIB_TITLE "AAC Encoder"
#define AACENCODER_LIB_BUILD_DATE __DATE__
#define AACENCODER_LIB_BUILD_TIME __TIME__
@@ -759,6 +759,7 @@ AACENC_ERROR FDKaacEnc_AdjustEncSettings(HANDLE_AACENCODER hAacEncoder,
/* Allow metadata support */
case AOT_AAC_LC:
case AOT_SBR:
+ case AOT_PS:
hAacEncoder->metaDataAllowed = 1;
if (((INT)hAacConfig->channelMode < 1) || ((INT)hAacConfig->channelMode > 7)) {
config->userMetaDataMode = 0;
@@ -1337,8 +1338,12 @@ AACENC_ERROR aacEncEncode(
for (i=0; i<(INT)nMetaDataExtensions; i++) { /* Get meta data extension payload. */
hAacEncoder->extPayload[nExtensions++] = pMetaDataExtPayload[i];
}
- if (matrix_mixdown_idx!=-1) { /* Set matrix mixdown coefficient. */
- UINT pceValue = (UINT)( (1<<3) | ((matrix_mixdown_idx&0x2)<<1) | 1 );
+
+ if ( (matrix_mixdown_idx!=-1)
+ && ((hAacEncoder->extParam.userChannelMode==MODE_1_2_2)||(hAacEncoder->extParam.userChannelMode==MODE_1_2_2_1)) )
+ {
+ /* Set matrix mixdown coefficient. */
+ UINT pceValue = (UINT)( (1<<3) | ((matrix_mixdown_idx&0x3)<<1) | 1 );
if (hAacEncoder->extParam.userPceAdditions != pceValue) {
hAacEncoder->extParam.userPceAdditions = pceValue;
hAacEncoder->InitFlags |= AACENC_INIT_TRANSPORT;
diff --git a/libAACenc/src/metadata_compressor.cpp b/libAACenc/src/metadata_compressor.cpp
index a96afbf..6fd8266 100644
--- a/libAACenc/src/metadata_compressor.cpp
+++ b/libAACenc/src/metadata_compressor.cpp
@@ -421,7 +421,7 @@ static FIXP_DBL tc2Coeff(
result = f2Pow(-exponent, DFRACT_BITS-1-METADATA_FRACT_BITS, &e_res);
/* result = 1.0 - exp(-1.0/((t) * (f))) */
- result = FL2FXCONST_DBL(1.0f) - scaleValue(result, e_res);
+ result = (FIXP_DBL)MAXVAL_DBL - scaleValue(result, e_res);
return result;
}
@@ -832,12 +832,12 @@ INT FDK_DRC_Generator_Calc(
FIXP_DBL accu;
/* drcComp->smoothLevel[i] = (1-alpha) * drcComp->smoothLevel[i] + alpha * level; */
- accu = fMult((FL2FXCONST_DBL(1.f)-alpha), drcComp->smoothLevel[i]);
+ accu = fMult(((FIXP_DBL)MAXVAL_DBL-alpha), drcComp->smoothLevel[i]);
accu += fMult(alpha,level);
drcComp->smoothLevel[i] = accu;
/* drcComp->smoothGain[i] = (1-alpha) * drcComp->smoothGain[i] + alpha * gain; */
- accu = fMult((FL2FXCONST_DBL(1.f)-alpha), drcComp->smoothGain[i]);
+ accu = fMult(((FIXP_DBL)MAXVAL_DBL-alpha), drcComp->smoothGain[i]);
accu += fMult(alpha,gain);
drcComp->smoothGain[i] = accu;
}
@@ -941,7 +941,7 @@ INT FDK_DRC_Generator_Calc(
if ((drcComp->channelIdx[LS] >= 0) && (drcComp->channelIdx[LS2] >= 0)) tmp = fMult(FL2FXCONST_DBL(0.707f), tmp); /* 7.1ch */
/*if ((drcComp->channelIdx[RS] >= 0) && (drcComp->channelIdx[RS2] >= 0)) tmp *=0.707f;*/ /* 7.1ch */
if (drcComp->channelIdx[S] >= 0) tmp += fMultDiv2(slev, fMult(FL2FXCONST_DBL(0.7f), (FIXP_PCM)pSamples[drcComp->channelIdx[S]]))>>(DOWNMIX_SHIFT-1); /* S */
- if (drcComp->channelIdx[C] >= 0) tmp += fMultDiv2(clev, (FIXP_PCM)pSamples[drcComp->channelIdx[C]])>>(DOWNMIX_SHIFT-1); /* C */
+ if (drcComp->channelIdx[C] >= 0) tmp += fMult(clev, (FIXP_PCM)pSamples[drcComp->channelIdx[C]])>>(DOWNMIX_SHIFT-1); /* C (2*clev) */
tmp += (FX_PCM2FX_DBL((FIXP_PCM)pSamples[drcComp->channelIdx[L]])>>DOWNMIX_SHIFT); /* L */
tmp += (FX_PCM2FX_DBL((FIXP_PCM)pSamples[drcComp->channelIdx[R]])>>DOWNMIX_SHIFT); /* R */
@@ -973,7 +973,7 @@ INT FDK_DRC_Generator_Calc(
* + 0.2f*2^(-METADATA_FRACT_BITS) + drcComp->smoothGain[i]
*/
peak[i] = fMult((FIXP_DBL)(10<<(METADATA_FRACT_BITS+LD_DATA_SHIFT)), fMult( FL2FX_DBL(2*0.30102999566398119521373889472449f), ld_peak));
- peak[i] += (FL2FX_DBL(0.2f)>>METADATA_INT_BITS); /* add a little bit headroom */
+ peak[i] += (FL2FX_DBL(0.5f)>>METADATA_INT_BITS); /* add a little bit headroom */
peak[i] += drcComp->smoothGain[i];
}