void MP4File::CreateIsmaODUpdateCommandFromFileForStream(
MP4TrackId audioTrackId,
MP4TrackId videoTrackId,
u_int8_t** ppBytes,
u_int64_t* pNumBytes)
{
MP4DescriptorProperty* pAudioEsd = NULL;
MP4Integer8Property* pAudioSLConfigPredef = NULL;
MP4BitfieldProperty* pAudioAccessUnitEndFlag = NULL;
int oldAudioUnitEndFlagValue = 0;
MP4DescriptorProperty* pVideoEsd = NULL;
MP4Integer8Property* pVideoSLConfigPredef = NULL;
MP4BitfieldProperty* pVideoAccessUnitEndFlag = NULL;
int oldVideoUnitEndFlagValue = 0;
MP4IntegerProperty* pAudioEsdId = NULL;
MP4IntegerProperty* pVideoEsdId = NULL;
if (audioTrackId != MP4_INVALID_TRACK_ID) {
// changed mp4a to * to handle enca case
MP4Atom* pEsdsAtom =
FindAtom(MakeTrackName(audioTrackId,
"mdia.minf.stbl.stsd.*.esds"));
ASSERT(pEsdsAtom);
pAudioEsd = (MP4DescriptorProperty*)(pEsdsAtom->GetProperty(2));
// ESID is 0 for file, stream needs to be non-ze
pAudioEsd->FindProperty("ESID",
(MP4Property**)&pAudioEsdId);
ASSERT(pAudioEsdId);
pAudioEsdId->SetValue(audioTrackId);
// SL config needs to change from 2 (file) to 1 (null)
pAudioEsd->FindProperty("slConfigDescr.predefined",
(MP4Property**)&pAudioSLConfigPredef);
ASSERT(pAudioSLConfigPredef);
pAudioSLConfigPredef->SetValue(0);
pAudioEsd->FindProperty("slConfigDescr.useAccessUnitEndFlag",
(MP4Property **)&pAudioAccessUnitEndFlag);
oldAudioUnitEndFlagValue =
pAudioAccessUnitEndFlag->GetValue();
pAudioAccessUnitEndFlag->SetValue(1);
}
if (videoTrackId != MP4_INVALID_TRACK_ID) {
// changed mp4v to * to handle encv case
MP4Atom* pEsdsAtom =
FindAtom(MakeTrackName(videoTrackId,
"mdia.minf.stbl.stsd.*.esds"));
ASSERT(pEsdsAtom);
pVideoEsd = (MP4DescriptorProperty*)(pEsdsAtom->GetProperty(2));
pVideoEsd->FindProperty("ESID",
(MP4Property**)&pVideoEsdId);
ASSERT(pVideoEsdId);
pVideoEsdId->SetValue(videoTrackId);
// SL config needs to change from 2 (file) to 1 (null)
pVideoEsd->FindProperty("slConfigDescr.predefined",
(MP4Property**)&pVideoSLConfigPredef);
ASSERT(pVideoSLConfigPredef);
pVideoSLConfigPredef->SetValue(0);
pVideoEsd->FindProperty("slConfigDescr.useAccessUnitEndFlag",
(MP4Property **)&pVideoAccessUnitEndFlag);
oldVideoUnitEndFlagValue =
pVideoAccessUnitEndFlag->GetValue();
pVideoAccessUnitEndFlag->SetValue(1);
}
CreateIsmaODUpdateCommandForStream(
pAudioEsd, pVideoEsd, ppBytes, pNumBytes);
VERBOSE_ISMA(GetVerbosity(),
printf("After CreateImsaODUpdateCommandForStream len %llu =\n", *pNumBytes); MP4HexDump(*ppBytes, *pNumBytes));
// return SL config values to 2 (file)
// return ESID values to 0
if (pAudioSLConfigPredef) {
pAudioSLConfigPredef->SetValue(2);
}
if (pAudioEsdId) {
pAudioEsdId->SetValue(0);
}
if (pAudioAccessUnitEndFlag) {
pAudioAccessUnitEndFlag->SetValue(oldAudioUnitEndFlagValue );
}
if (pVideoEsdId) {
pVideoEsdId->SetValue(0);
}
if (pVideoSLConfigPredef) {
pVideoSLConfigPredef->SetValue(2);
}
if (pVideoAccessUnitEndFlag) {
pVideoAccessUnitEndFlag->SetValue(oldVideoUnitEndFlagValue );
}
}
void MP4File::CreateIsmaIodFromFile(
MP4TrackId odTrackId,
MP4TrackId sceneTrackId,
MP4TrackId audioTrackId,
MP4TrackId videoTrackId,
u_int8_t** ppBytes,
u_int64_t* pNumBytes)
{
MP4Descriptor* pIod = new MP4IODescriptor();
pIod->SetTag(MP4IODescrTag);
pIod->Generate();
MP4Atom* pIodsAtom = FindAtom("moov.iods");
ASSERT(pIodsAtom);
MP4DescriptorProperty* pSrcIod =
(MP4DescriptorProperty*)pIodsAtom->GetProperty(2);
CloneIntegerProperty(pIod, pSrcIod, "objectDescriptorId");
CloneIntegerProperty(pIod, pSrcIod, "ODProfileLevelId");
CloneIntegerProperty(pIod, pSrcIod, "sceneProfileLevelId");
CloneIntegerProperty(pIod, pSrcIod, "audioProfileLevelId");
CloneIntegerProperty(pIod, pSrcIod, "visualProfileLevelId");
CloneIntegerProperty(pIod, pSrcIod, "graphicsProfileLevelId");
// mutate esIds from MP4ESIDIncDescrTag to MP4ESDescrTag
MP4DescriptorProperty* pEsProperty;
pIod->FindProperty("esIds", (MP4Property**)&pEsProperty);
pEsProperty->SetTags(MP4ESDescrTag);
MP4IntegerProperty* pSetProperty;
MP4IntegerProperty* pSceneESID;
MP4IntegerProperty* pOdESID;
// OD
MP4Descriptor* pOdEsd =
pEsProperty->AddDescriptor(MP4ESDescrTag);
pOdEsd->Generate();
pOdEsd->FindProperty("ESID",
(MP4Property**)&pOdESID);
// we set the OD ESID to a non-zero unique value
pOdESID->SetValue(m_odTrackId);
pOdEsd->FindProperty("URLFlag",
(MP4Property**)&pSetProperty);
pSetProperty->SetValue(1);
u_int8_t* pBytes;
u_int64_t numBytes;
CreateIsmaODUpdateCommandFromFileForStream(
audioTrackId,
videoTrackId,
&pBytes,
&numBytes);
VERBOSE_ISMA(GetVerbosity(),
printf("OD data =\n"); MP4HexDump(pBytes, numBytes));
char* odCmdBase64 = MP4ToBase64(pBytes, numBytes);
char* urlBuf = (char*)MP4Malloc(strlen(odCmdBase64) + 64);
sprintf(urlBuf,
"data:application/mpeg4-od-au;base64,%s",
odCmdBase64);
MP4StringProperty* pUrlProperty;
pOdEsd->FindProperty("URL",
(MP4Property**)&pUrlProperty);
pUrlProperty->SetValue(urlBuf);
VERBOSE_ISMA(GetVerbosity(),
printf("OD data URL = \042%s\042\n", urlBuf));
MP4Free(odCmdBase64);
odCmdBase64 = NULL;
MP4Free(pBytes);
pBytes = NULL;
MP4Free(urlBuf);
urlBuf = NULL;
MP4DescriptorProperty* pSrcDcd = NULL;
// HACK temporarily point to scene decoder config
FindProperty(MakeTrackName(odTrackId,
"mdia.minf.stbl.stsd.mp4s.esds.decConfigDescr"),
(MP4Property**)&pSrcDcd);
ASSERT(pSrcDcd);
MP4Property* pOrgOdEsdProperty =
pOdEsd->GetProperty(8);
pOdEsd->SetProperty(8, pSrcDcd);
// bufferSizeDB needs to be set appropriately
MP4BitfieldProperty* pBufferSizeProperty = NULL;
pOdEsd->FindProperty("decConfigDescr.bufferSizeDB",
(MP4Property**)&pBufferSizeProperty);
ASSERT(pBufferSizeProperty);
pBufferSizeProperty->SetValue(numBytes);
// SL config needs to change from 2 (file) to 1 (null)
pOdEsd->FindProperty("slConfigDescr.predefined",
(MP4Property**)&pSetProperty);
pSetProperty->SetValue(1);
// Scene
MP4Descriptor* pSceneEsd =
pEsProperty->AddDescriptor(MP4ESDescrTag);
pSceneEsd->Generate();
pSceneEsd->FindProperty("ESID",
(MP4Property**)&pSceneESID);
// we set the Scene ESID to a non-zero unique value
pSceneESID->SetValue(sceneTrackId);
pSceneEsd->FindProperty("URLFlag",
(MP4Property**)&pSetProperty);
pSetProperty->SetValue(1);
CreateIsmaSceneCommand(
MP4_IS_VALID_TRACK_ID(audioTrackId),
MP4_IS_VALID_TRACK_ID(videoTrackId),
&pBytes,
&numBytes);
VERBOSE_ISMA(GetVerbosity(),
printf("Scene data =\n"); MP4HexDump(pBytes, numBytes));
char *sceneCmdBase64 = MP4ToBase64(pBytes, numBytes);
urlBuf = (char*)MP4Malloc(strlen(sceneCmdBase64) + 64);
sprintf(urlBuf,
"data:application/mpeg4-bifs-au;base64,%s",
sceneCmdBase64);
pSceneEsd->FindProperty("URL",
(MP4Property**)&pUrlProperty);
pUrlProperty->SetValue(urlBuf);
VERBOSE_ISMA(GetVerbosity(),
printf("Scene data URL = \042%s\042\n", urlBuf));
MP4Free(sceneCmdBase64);
sceneCmdBase64 = NULL;
MP4Free(urlBuf);
urlBuf = NULL;
MP4Free(pBytes);
pBytes = NULL;
// HACK temporarily point to scene decoder config
FindProperty(MakeTrackName(sceneTrackId,
"mdia.minf.stbl.stsd.mp4s.esds.decConfigDescr"),
(MP4Property**)&pSrcDcd);
ASSERT(pSrcDcd);
MP4Property* pOrgSceneEsdProperty =
pSceneEsd->GetProperty(8);
pSceneEsd->SetProperty(8, pSrcDcd);
// bufferSizeDB needs to be set
pBufferSizeProperty = NULL;
pSceneEsd->FindProperty("decConfigDescr.bufferSizeDB",
(MP4Property**)&pBufferSizeProperty);
ASSERT(pBufferSizeProperty);
pBufferSizeProperty->SetValue(numBytes);
// SL config needs to change from 2 (file) to 1 (null)
pSceneEsd->FindProperty("slConfigDescr.predefined",
(MP4Property**)&pSetProperty);
pSetProperty->SetValue(1);
// finally get the whole thing written to a memory
pIod->WriteToMemory(this, ppBytes, pNumBytes);
// now carefully replace esd properties before destroying
pOdEsd->SetProperty(8, pOrgOdEsdProperty);
pSceneEsd->SetProperty(8, pOrgSceneEsdProperty);
pSceneESID->SetValue(0); // restore 0 value
pOdESID->SetValue(0);
delete pIod;
VERBOSE_ISMA(GetVerbosity(),
printf("IOD data =\n"); MP4HexDump(*ppBytes, *pNumBytes));
}