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Diffstat (limited to 'media/libstagefright/MPEG4Extractor.cpp')
-rw-r--r--media/libstagefright/MPEG4Extractor.cpp170
1 files changed, 165 insertions, 5 deletions
diff --git a/media/libstagefright/MPEG4Extractor.cpp b/media/libstagefright/MPEG4Extractor.cpp
index 6a33ce6..4756b3e 100644
--- a/media/libstagefright/MPEG4Extractor.cpp
+++ b/media/libstagefright/MPEG4Extractor.cpp
@@ -571,7 +571,8 @@ static int32_t readSize(off64_t offset,
return size;
}
-status_t MPEG4Extractor::parseDrmSINF(off64_t *offset, off64_t data_offset) {
+status_t MPEG4Extractor::parseDrmSINF(
+ off64_t * /* offset */, off64_t data_offset) {
uint8_t updateIdTag;
if (mDataSource->readAt(data_offset, &updateIdTag, 1) < 1) {
return ERROR_IO;
@@ -2441,6 +2442,58 @@ status_t MPEG4Extractor::verifyTrack(Track *track) {
return OK;
}
+typedef enum {
+ //AOT_NONE = -1,
+ //AOT_NULL_OBJECT = 0,
+ //AOT_AAC_MAIN = 1, /**< Main profile */
+ AOT_AAC_LC = 2, /**< Low Complexity object */
+ //AOT_AAC_SSR = 3,
+ //AOT_AAC_LTP = 4,
+ AOT_SBR = 5,
+ //AOT_AAC_SCAL = 6,
+ //AOT_TWIN_VQ = 7,
+ //AOT_CELP = 8,
+ //AOT_HVXC = 9,
+ //AOT_RSVD_10 = 10, /**< (reserved) */
+ //AOT_RSVD_11 = 11, /**< (reserved) */
+ //AOT_TTSI = 12, /**< TTSI Object */
+ //AOT_MAIN_SYNTH = 13, /**< Main Synthetic object */
+ //AOT_WAV_TAB_SYNTH = 14, /**< Wavetable Synthesis object */
+ //AOT_GEN_MIDI = 15, /**< General MIDI object */
+ //AOT_ALG_SYNTH_AUD_FX = 16, /**< Algorithmic Synthesis and Audio FX object */
+ AOT_ER_AAC_LC = 17, /**< Error Resilient(ER) AAC Low Complexity */
+ //AOT_RSVD_18 = 18, /**< (reserved) */
+ //AOT_ER_AAC_LTP = 19, /**< Error Resilient(ER) AAC LTP object */
+ AOT_ER_AAC_SCAL = 20, /**< Error Resilient(ER) AAC Scalable object */
+ //AOT_ER_TWIN_VQ = 21, /**< Error Resilient(ER) TwinVQ object */
+ AOT_ER_BSAC = 22, /**< Error Resilient(ER) BSAC object */
+ AOT_ER_AAC_LD = 23, /**< Error Resilient(ER) AAC LowDelay object */
+ //AOT_ER_CELP = 24, /**< Error Resilient(ER) CELP object */
+ //AOT_ER_HVXC = 25, /**< Error Resilient(ER) HVXC object */
+ //AOT_ER_HILN = 26, /**< Error Resilient(ER) HILN object */
+ //AOT_ER_PARA = 27, /**< Error Resilient(ER) Parametric object */
+ //AOT_RSVD_28 = 28, /**< might become SSC */
+ AOT_PS = 29, /**< PS, Parametric Stereo (includes SBR) */
+ //AOT_MPEGS = 30, /**< MPEG Surround */
+
+ AOT_ESCAPE = 31, /**< Signal AOT uses more than 5 bits */
+
+ //AOT_MP3ONMP4_L1 = 32, /**< MPEG-Layer1 in mp4 */
+ //AOT_MP3ONMP4_L2 = 33, /**< MPEG-Layer2 in mp4 */
+ //AOT_MP3ONMP4_L3 = 34, /**< MPEG-Layer3 in mp4 */
+ //AOT_RSVD_35 = 35, /**< might become DST */
+ //AOT_RSVD_36 = 36, /**< might become ALS */
+ //AOT_AAC_SLS = 37, /**< AAC + SLS */
+ //AOT_SLS = 38, /**< SLS */
+ //AOT_ER_AAC_ELD = 39, /**< AAC Enhanced Low Delay */
+
+ //AOT_USAC = 42, /**< USAC */
+ //AOT_SAOC = 43, /**< SAOC */
+ //AOT_LD_MPEGS = 44, /**< Low Delay MPEG Surround */
+
+ //AOT_RSVD50 = 50, /**< Interim AOT for Rsvd50 */
+} AUDIO_OBJECT_TYPE;
+
status_t MPEG4Extractor::updateAudioTrackInfoFromESDS_MPEG4Audio(
const void *esds_data, size_t esds_size) {
ESDS esds(esds_data, esds_size);
@@ -2523,7 +2576,7 @@ status_t MPEG4Extractor::updateAudioTrackInfoFromESDS_MPEG4Audio(
sampleRate = kSamplingRate[freqIndex];
}
- if (objectType == 5 || objectType == 29) { // SBR specific config per 14496-3 table 1.13
+ if (objectType == AOT_SBR || objectType == AOT_PS) {//SBR specific config per 14496-3 table 1.13
uint32_t extFreqIndex = br.getBits(4);
int32_t extSampleRate;
if (extFreqIndex == 15) {
@@ -2541,6 +2594,111 @@ status_t MPEG4Extractor::updateAudioTrackInfoFromESDS_MPEG4Audio(
// mLastTrack->meta->setInt32(kKeyExtSampleRate, extSampleRate);
}
+ switch (numChannels) {
+ // values defined in 14496-3_2009 amendment-4 Table 1.19 - Channel Configuration
+ case 0:
+ case 1:// FC
+ case 2:// FL FR
+ case 3:// FC, FL FR
+ case 4:// FC, FL FR, RC
+ case 5:// FC, FL FR, SL SR
+ case 6:// FC, FL FR, SL SR, LFE
+ //numChannels already contains the right value
+ break;
+ case 11:// FC, FL FR, SL SR, RC, LFE
+ numChannels = 7;
+ break;
+ case 7: // FC, FCL FCR, FL FR, SL SR, LFE
+ case 12:// FC, FL FR, SL SR, RL RR, LFE
+ case 14:// FC, FL FR, SL SR, LFE, FHL FHR
+ numChannels = 8;
+ break;
+ default:
+ return ERROR_UNSUPPORTED;
+ }
+
+ {
+ if (objectType == AOT_SBR || objectType == AOT_PS) {
+ const int32_t extensionSamplingFrequency = br.getBits(4);
+ objectType = br.getBits(5);
+
+ if (objectType == AOT_ESCAPE) {
+ objectType = 32 + br.getBits(6);
+ }
+ }
+ if (objectType == AOT_AAC_LC || objectType == AOT_ER_AAC_LC ||
+ objectType == AOT_ER_AAC_LD || objectType == AOT_ER_AAC_SCAL ||
+ objectType == AOT_ER_BSAC) {
+ const int32_t frameLengthFlag = br.getBits(1);
+
+ const int32_t dependsOnCoreCoder = br.getBits(1);
+
+ if (dependsOnCoreCoder ) {
+ const int32_t coreCoderDelay = br.getBits(14);
+ }
+
+ const int32_t extensionFlag = br.getBits(1);
+
+ if (numChannels == 0 ) {
+ int32_t channelsEffectiveNum = 0;
+ int32_t channelsNum = 0;
+ const int32_t ElementInstanceTag = br.getBits(4);
+ const int32_t Profile = br.getBits(2);
+ const int32_t SamplingFrequencyIndex = br.getBits(4);
+ const int32_t NumFrontChannelElements = br.getBits(4);
+ const int32_t NumSideChannelElements = br.getBits(4);
+ const int32_t NumBackChannelElements = br.getBits(4);
+ const int32_t NumLfeChannelElements = br.getBits(2);
+ const int32_t NumAssocDataElements = br.getBits(3);
+ const int32_t NumValidCcElements = br.getBits(4);
+
+ const int32_t MonoMixdownPresent = br.getBits(1);
+ if (MonoMixdownPresent != 0) {
+ const int32_t MonoMixdownElementNumber = br.getBits(4);
+ }
+
+ const int32_t StereoMixdownPresent = br.getBits(1);
+ if (StereoMixdownPresent != 0) {
+ const int32_t StereoMixdownElementNumber = br.getBits(4);
+ }
+
+ const int32_t MatrixMixdownIndexPresent = br.getBits(1);
+ if (MatrixMixdownIndexPresent != 0) {
+ const int32_t MatrixMixdownIndex = br.getBits(2);
+ const int32_t PseudoSurroundEnable = br.getBits(1);
+ }
+
+ int i;
+ for (i=0; i < NumFrontChannelElements; i++) {
+ const int32_t FrontElementIsCpe = br.getBits(1);
+ const int32_t FrontElementTagSelect = br.getBits(4);
+ channelsNum += FrontElementIsCpe ? 2 : 1;
+ }
+
+ for (i=0; i < NumSideChannelElements; i++) {
+ const int32_t SideElementIsCpe = br.getBits(1);
+ const int32_t SideElementTagSelect = br.getBits(4);
+ channelsNum += SideElementIsCpe ? 2 : 1;
+ }
+
+ for (i=0; i < NumBackChannelElements; i++) {
+ const int32_t BackElementIsCpe = br.getBits(1);
+ const int32_t BackElementTagSelect = br.getBits(4);
+ channelsNum += BackElementIsCpe ? 2 : 1;
+ }
+ channelsEffectiveNum = channelsNum;
+
+ for (i=0; i < NumLfeChannelElements; i++) {
+ const int32_t LfeElementTagSelect = br.getBits(4);
+ channelsNum += 1;
+ }
+ ALOGV("mpeg4 audio channelsNum = %d", channelsNum);
+ ALOGV("mpeg4 audio channelsEffectiveNum = %d", channelsEffectiveNum);
+ numChannels = channelsNum;
+ }
+ }
+ }
+
if (numChannels == 0) {
return ERROR_UNSUPPORTED;
}
@@ -2802,7 +2960,8 @@ status_t MPEG4Source::parseChunk(off64_t *offset) {
return OK;
}
-status_t MPEG4Source::parseSampleAuxiliaryInformationSizes(off64_t offset, off64_t size) {
+status_t MPEG4Source::parseSampleAuxiliaryInformationSizes(
+ off64_t offset, off64_t /* size */) {
ALOGV("parseSampleAuxiliaryInformationSizes");
// 14496-12 8.7.12
uint8_t version;
@@ -2864,7 +3023,8 @@ status_t MPEG4Source::parseSampleAuxiliaryInformationSizes(off64_t offset, off64
return OK;
}
-status_t MPEG4Source::parseSampleAuxiliaryInformationOffsets(off64_t offset, off64_t size) {
+status_t MPEG4Source::parseSampleAuxiliaryInformationOffsets(
+ off64_t offset, off64_t /* size */) {
ALOGV("parseSampleAuxiliaryInformationOffsets");
// 14496-12 8.7.13
uint8_t version;
@@ -3575,7 +3735,7 @@ status_t MPEG4Source::fragmentedRead(
}
off64_t offset = 0;
- size_t size;
+ size_t size = 0;
uint32_t cts = 0;
bool isSyncSample = false;
bool newBuffer = false;
generated by cgit v1.1 at 2024-05-29 01:20:53 +0000