string
TypeHandlerSelector::GetParameterValue(Context &context, Parameter *param,
const void *address)
{
TypeHandler *target = fDefault;
int index = get_value<int>(context.GetValue(context.GetSibling(fSibling)));
SelectMap::const_iterator i = fMap.find(index);
if (i != fMap.end())
target = i->second;
return target->GetParameterValue(context, param, address);
}
/*----------------------------------------------------------------------
| AP4_AtomFactory::CreateAtomFromStream
+---------------------------------------------------------------------*/
AP4_Result
AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream& stream,
AP4_Size& bytes_available,
AP4_Atom*& atom,
AP4_Atom* parent)
{
AP4_Result result;
// NULL by default
atom = NULL;
// check that there are enough bytes for at least a header
if (bytes_available < 8) return AP4_ERROR_EOS;
// remember current stream offset
AP4_Offset start;
stream.Tell(start);
// read atom size
AP4_UI64 size = 0;
result = stream.ReadUI32((AP4_UI32&)size);
if (AP4_FAILED(result)) {
stream.Seek(start);
return result;
}
if (size == 0) {
// atom extends to end of file
AP4_Size streamSize = 0;
stream.GetSize(streamSize);
if (streamSize >= start) {
size = streamSize - start;
}
}
// check the size (we don't handle extended size yet)
if (size != 1 && size < 8 || size > bytes_available) {
stream.Seek(start);
return AP4_ERROR_INVALID_FORMAT;
}
// read atom type
AP4_Atom::Type type;
result = stream.ReadUI32(type);
if (AP4_FAILED(result)) {
stream.Seek(start);
return result;
}
if (size == 1)
{
AP4_UI64 size_high;
result = stream.ReadUI64(size_high);
if (AP4_FAILED(result) ) {
stream.Seek(start);
return AP4_ERROR_INVALID_FORMAT;
}
size = size_high;
}
// create the atom
switch (type) {
case AP4_ATOM_TYPE_MOOV:
atom = new AP4_MoovAtom(size, stream, *this);
break;
case AP4_ATOM_TYPE_MVHD:
atom = new AP4_MvhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_TRAK:
atom = new AP4_TrakAtom(size, stream, *this);
break;
case AP4_ATOM_TYPE_HDLR:
atom = new AP4_HdlrAtom(size, stream);
break;
case AP4_ATOM_TYPE_DREF:
atom = new AP4_DrefAtom(size, stream, *this);
break;
case AP4_ATOM_TYPE_URL:
atom = new AP4_UrlAtom(size, stream);
break;
case AP4_ATOM_TYPE_TKHD:
atom = new AP4_TkhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_MDHD:
atom = new AP4_MdhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_STSD:
atom = new AP4_StsdAtom(size, stream, *this);
break;
case AP4_ATOM_TYPE_STSC:
atom = new AP4_StscAtom(size, stream);
break;
case AP4_ATOM_TYPE_STCO:
atom = new AP4_StcoAtom(size, stream);
break;
case AP4_ATOM_TYPE_CO64:
atom = new AP4_Co64Atom(size, stream);
break;
case AP4_ATOM_TYPE_STSZ:
atom = new AP4_StszAtom(size, stream);
break;
case AP4_ATOM_TYPE_STTS:
atom = new AP4_SttsAtom(size, stream);
break;
case AP4_ATOM_TYPE_CTTS:
atom = new AP4_CttsAtom(size, stream);
break;
case AP4_ATOM_TYPE_STSS:
atom = new AP4_StssAtom(size, stream);
break;
case AP4_ATOM_TYPE_MP4S:
atom = new AP4_Mp4sSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_MP4A:
atom = parent && parent->GetType() == AP4_ATOM_TYPE_STSD
? (AP4_Atom*)new AP4_Mp4aSampleEntry(size, stream, *this)
: (AP4_Atom*)new AP4_UnknownAtom(type, size, false, stream);
break;
case AP4_ATOM_TYPE_MP4V:
atom = new AP4_Mp4vSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_AVC1:
atom = new AP4_Avc1SampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_ENCA:
atom = new AP4_EncaSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_ENCV:
atom = new AP4_EncvSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_ESDS:
atom = new AP4_EsdsAtom(size, stream);
break;
case AP4_ATOM_TYPE_VMHD:
atom = new AP4_VmhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_SMHD:
atom = new AP4_SmhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_NMHD:
atom = new AP4_NmhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_HMHD:
atom = new AP4_HmhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_FRMA:
atom = new AP4_FrmaAtom(size, stream);
break;
case AP4_ATOM_TYPE_SCHM:
atom = new AP4_SchmAtom(size, stream);
break;
case AP4_ATOM_TYPE_FTYP:
atom = new AP4_FtypAtom(size, stream);
break;
case AP4_ATOM_TYPE_RTP:
if (m_Context == AP4_ATOM_TYPE_HNTI) {
atom = new AP4_RtpAtom(size, stream);
} else {
atom = new AP4_RtpHintSampleEntry(size, stream, *this);
}
break;
case AP4_ATOM_TYPE_TIMS:
atom = new AP4_TimsAtom(size, stream);
break;
case AP4_ATOM_TYPE_SDP:
atom = new AP4_SdpAtom(size, stream);
break;
case AP4_ATOM_TYPE_IKMS:
atom = new AP4_IkmsAtom(size, stream);
break;
case AP4_ATOM_TYPE_ISFM:
atom = new AP4_IsfmAtom(size, stream);
break;
case AP4_ATOM_TYPE_HINT:
atom = new AP4_TrefTypeAtom(type, size, stream);
break;
// container atoms
case AP4_ATOM_TYPE_TREF:
case AP4_ATOM_TYPE_HNTI:
case AP4_ATOM_TYPE_STBL:
case AP4_ATOM_TYPE_MDIA:
case AP4_ATOM_TYPE_DINF:
case AP4_ATOM_TYPE_MINF:
case AP4_ATOM_TYPE_SCHI:
case AP4_ATOM_TYPE_SINF:
case AP4_ATOM_TYPE_UDTA:
case AP4_ATOM_TYPE_ILST:
case AP4_ATOM_TYPE_NAM:
case AP4_ATOM_TYPE_ART:
case AP4_ATOM_TYPE_WRT:
case AP4_ATOM_TYPE_ALB:
case AP4_ATOM_TYPE_DAY:
case AP4_ATOM_TYPE_TOO:
case AP4_ATOM_TYPE_CMT:
case AP4_ATOM_TYPE_GEN:
case AP4_ATOM_TYPE_TRKN:
case AP4_ATOM_TYPE_EDTS:
case AP4_ATOM_TYPE_WAVE:
case AP4_ATOM_TYPE_CMOV: {
AP4_UI32 context = m_Context;
m_Context = type; // set the context for the children
atom = new AP4_ContainerAtom(type, size, false, stream, *this);
m_Context = context; // restore the previous context
break;
}
// full container atoms
case AP4_ATOM_TYPE_META:
atom = new AP4_ContainerAtom(type, size, true, stream, *this);
break;
// other
case AP4_ATOM_TYPE_AVCC:
atom = new AP4_AvcCAtom(size, stream);
break;
case AP4_ATOM_TYPE_TEXT:
atom = new AP4_TextSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_TX3G:
atom = new AP4_Tx3gSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_FTAB:
atom = new AP4_FtabAtom(size, stream);
break;
case AP4_ATOM_TYPE_RAW:
{
AP4_Offset pos;
AP4_UI16 ch_count_test;
stream.Tell(pos);
stream.Seek(pos + 16);
stream.ReadUI16(ch_count_test);
stream.Seek(pos);
if (ch_count_test == 0) {
atom = new AP4_VisualSampleEntry(type, size, stream, *this);
} else {
atom = new AP4_AudioSampleEntry(type, size, stream, *this);
}
}
break;
case AP4_ATOM_TYPE_CVID:
case AP4_ATOM_TYPE_SVQ1:
case AP4_ATOM_TYPE_SVQ2:
case AP4_ATOM_TYPE_SVQ3:
case AP4_ATOM_TYPE_H261:
case AP4_ATOM_TYPE_H263:
case AP4_ATOM_TYPE_S263:
case AP4_ATOM_TYPE_JPEG:
case AP4_ATOM_TYPE_PNG:
case AP4_ATOM_TYPE_RLE:
case AP4_ATOM_TYPE_MJPA:
case AP4_ATOM_TYPE_MJPB:
case AP4_ATOM_TYPE_RPZA:
case AP4_ATOM_TYPE_DIV3:
case AP4_ATOM_TYPE_DIVX:
case AP4_ATOM_TYPE_8BPS:
case AP4_ATOM_TYPE_3IV1:
case AP4_ATOM_TYPE_3IV2:
case AP4_ATOM_TYPE_IV32:
case AP4_ATOM_TYPE_IV41:
case AP4_ATOM_TYPE_VP31:
case AP4_ATOM_TYPE_YV12:
case AP4_ATOM_TYPE_APCN:
case AP4_ATOM_TYPE_APCH:
case AP4_ATOM_TYPE_APCO:
case AP4_ATOM_TYPE_APCS:
atom = new AP4_VisualSampleEntry(type, size, stream, *this);
break;
// DV Video Subtypes - http://msdn.microsoft.com/en-us/library/windows/desktop/dd388646%28v=vs.85%29.aspx
case AP4_ATOM_TYPE_DVC:
case AP4_ATOM_TYPE_DVCP:
atom = new AP4_VisualSampleEntry(AP4_ATOM_TYPE('d','v','s','d'), size, stream, *this); // MEDIASUBTYPE_dvsd (DV Video Decoder, ffdshow, LAV)
break;
case AP4_ATOM_TYPE_DVPP:
atom = new AP4_VisualSampleEntry(AP4_ATOM_TYPE('d','v','2','5'), size, stream, *this); // MEDIASUBTYPE_dv25 (ffdshow, LAV)
break;
case AP4_ATOM_TYPE_DV5N:
case AP4_ATOM_TYPE_DV5P:
atom = new AP4_VisualSampleEntry(AP4_ATOM_TYPE('d','v','5','0'), size, stream, *this); // MEDIASUBTYPE_dv50 (ffdshow, LAV)
break;
case AP4_ATOM_TYPE_DVHQ:
case AP4_ATOM_TYPE_DVH5:
atom = new AP4_VisualSampleEntry(AP4_ATOM_TYPE('C','D','V','H'), size, stream, *this); // MEDIASUBTYPE_CDVH (LAV)
break;
case AP4_ATOM_TYPE_MJPG:
case AP4_ATOM_TYPE_AVDJ: // uncommon fourcc
case AP4_ATOM_TYPE_DMB1: // uncommon fourcc
atom = new AP4_VisualSampleEntry(AP4_ATOM_TYPE_MJPG, size, stream, *this);
break;
case AP4_ATOM_TYPE_2VUY: // = 'UYVY'
atom = new AP4_VisualSampleEntry(AP4_ATOM_TYPE('U','Y','V','Y'), size, stream, *this);
break;
case AP4_ATOM_TYPE_SAMR:
case AP4_ATOM_TYPE__MP3:
case AP4_ATOM_TYPE_IMA4:
case AP4_ATOM_TYPE_QDMC:
case AP4_ATOM_TYPE_QDM2:
case AP4_ATOM_TYPE_NONE:
case AP4_ATOM_TYPE_TWOS:
case AP4_ATOM_TYPE_SOWT:
case AP4_ATOM_TYPE_IN24:
case AP4_ATOM_TYPE_IN32:
case AP4_ATOM_TYPE_FL32:
case AP4_ATOM_TYPE_FL64:
case AP4_ATOM_TYPE_LPCM:
case AP4_ATOM_TYPE_ALAW:
case AP4_ATOM_TYPE_ULAW:
case AP4_ATOM_TYPE_NMOS:
case AP4_ATOM_TYPE_ALAC:
case AP4_ATOM_TYPE_MAC3:
case AP4_ATOM_TYPE_MAC6:
atom = new AP4_AudioSampleEntry(type, size, stream, *this);
break;
case AP4_ATOM_TYPE__AC3: // AC3-in-MP4 from ISO Standard
case AP4_ATOM_TYPE_SAC3: // AC3-in-MP4 from Nero Stuff >.<
atom = new AP4_AC3SampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_EAC3:
atom = new AP4_EAC3SampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_CHPL:
atom = new AP4_ChplAtom(size, stream);
break;
case AP4_ATOM_TYPE_DATA:
atom = new AP4_DataAtom(size, stream);
break;
case AP4_ATOM_TYPE_DCOM:
atom = new AP4_DcomAtom(size, stream);
break;
case AP4_ATOM_TYPE_CMVD:
atom = new AP4_CmvdAtom(size, stream, *this);
break;
case AP4_ATOM_TYPE_ENDA:
atom = new AP4_EndaAtom(size, stream);
break;
case AP4_ATOM_TYPE_PASP:
atom = new AP4_PaspAtom(size, stream);
break;
default:
if(parent && parent->GetType() == AP4_ATOM_TYPE_STSD && (type & 0xffff0000) == AP4_ATOM_TYPE('m', 's', 0, 0)) {
atom = new AP4_AudioSampleEntry(type, size, stream, *this);
} else {// try all the external type handlers
atom = NULL;
AP4_List<TypeHandler>::Item* handler_item = m_TypeHandlers.FirstItem();
while (handler_item) {
TypeHandler* handler = handler_item->GetData();
if (AP4_SUCCEEDED(handler->CreateAtom(type, size, stream, atom))) {
break;
}
handler_item = handler_item->GetNext();
}
if (atom == NULL) {
// no custom handlers, create a generic atom
atom = new AP4_UnknownAtom(type, size, false, stream);
}
}
break;
}
// skip to the end of the atom
bytes_available -= size;
result = stream.Seek(start+size);
if (AP4_FAILED(result)) {
delete atom;
atom = NULL;
}
return result;
}
/*----------------------------------------------------------------------
| AP4_AtomFactory::CreateAtomFromStream
+---------------------------------------------------------------------*/
AP4_Result
AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream& stream,
AP4_Size& bytes_available,
AP4_Atom*& atom,
AP4_Atom* parent)
{
AP4_Result result;
// NULL by default
atom = NULL;
// check that there are enough bytes for at least a header
if (bytes_available < 8) return AP4_ERROR_EOS;
// remember current stream offset
AP4_Offset start;
stream.Tell(start);
// read atom size
AP4_UI32 size;
result = stream.ReadUI32(size);
if (AP4_FAILED(result)) {
stream.Seek(start);
return result;
}
if (size == 0) {
// atom extends to end of file
AP4_Size streamSize = 0;
stream.GetSize(streamSize);
if (streamSize >= start) {
size = streamSize - start;
}
}
// check the size (we don't handle extended size yet)
if (size != 1 && size < 8 || size > bytes_available) {
stream.Seek(start);
return AP4_ERROR_INVALID_FORMAT;
}
// read atom type
AP4_Atom::Type type;
result = stream.ReadUI32(type);
if (AP4_FAILED(result)) {
stream.Seek(start);
return result;
}
if (size == 1)
{
AP4_UI32 size_high;
result = stream.ReadUI32(size_high);
if (AP4_FAILED(result) ) {
stream.Seek(start);
return AP4_ERROR_INVALID_FORMAT;
}
result = stream.ReadUI32(size);
if (AP4_FAILED(result)) {
stream.Seek(start);
return result;
}
if(size_high > 0)
{
size = (((ULONGLONG)size_high) << 32) | size;
}
}
// create the atom
switch (type) {
case AP4_ATOM_TYPE_3DVF:
case AP4_ATOM_TYPE_MOOV:
atom = DNew AP4_MoovAtom(size, stream, *this);
break;
case AP4_ATOM_TYPE_MVHD:
atom = DNew AP4_MvhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_TRAK:
atom = DNew AP4_TrakAtom(size, stream, *this);
break;
case AP4_ATOM_TYPE_HDLR:
atom = DNew AP4_HdlrAtom(size, stream);
break;
case AP4_ATOM_TYPE_DREF:
atom = DNew AP4_DrefAtom(size, stream, *this);
break;
case AP4_ATOM_TYPE_URL:
atom = DNew AP4_UrlAtom(size, stream);
break;
case AP4_ATOM_TYPE_TKHD:
atom = DNew AP4_TkhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_MDHD:
atom = DNew AP4_MdhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_STSD:
atom = DNew AP4_StsdAtom(size, stream, *this);
break;
case AP4_ATOM_TYPE_STSC:
atom = DNew AP4_StscAtom(size, stream);
break;
case AP4_ATOM_TYPE_STCO:
atom = DNew AP4_StcoAtom(size, stream);
break;
case AP4_ATOM_TYPE_CO64:
atom = DNew AP4_Co64Atom(size, stream);
break;
case AP4_ATOM_TYPE_STSZ:
atom = DNew AP4_StszAtom(size, stream);
break;
case AP4_ATOM_TYPE_STTS:
atom = DNew AP4_SttsAtom(size, stream);
break;
case AP4_ATOM_TYPE_CTTS:
atom = DNew AP4_CttsAtom(size, stream);
break;
case AP4_ATOM_TYPE_STSS:
atom = DNew AP4_StssAtom(size, stream);
break;
case AP4_ATOM_TYPE_MP4S:
atom = DNew AP4_Mp4sSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_MP4A:
atom = parent && parent->GetType() == AP4_ATOM_TYPE_STSD
? (AP4_Atom*)DNew AP4_Mp4aSampleEntry(size, stream, *this)
: (AP4_Atom*)DNew AP4_UnknownAtom(type, size, false, stream);
break;
case AP4_ATOM_TYPE_MP4V:
atom = DNew AP4_Mp4vSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_AVC1:
atom = DNew AP4_Avc1SampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_ENCA:
atom = DNew AP4_EncaSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_ENCV:
atom = DNew AP4_EncvSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_ESDS:
atom = DNew AP4_EsdsAtom(size, stream);
break;
case AP4_ATOM_TYPE_VMHD:
atom = DNew AP4_VmhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_SMHD:
atom = DNew AP4_SmhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_NMHD:
atom = DNew AP4_NmhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_HMHD:
atom = DNew AP4_HmhdAtom(size, stream);
break;
case AP4_ATOM_TYPE_FRMA:
atom = DNew AP4_FrmaAtom(size, stream);
break;
case AP4_ATOM_TYPE_SCHM:
atom = DNew AP4_SchmAtom(size, stream);
break;
case AP4_ATOM_TYPE_FTYP:
atom = DNew AP4_FtypAtom(size, stream);
break;
case AP4_ATOM_TYPE_RTP:
if (m_Context == AP4_ATOM_TYPE_HNTI) {
atom = DNew AP4_RtpAtom(size, stream);
} else {
atom = DNew AP4_RtpHintSampleEntry(size, stream, *this);
}
break;
case AP4_ATOM_TYPE_TIMS:
atom = DNew AP4_TimsAtom(size, stream);
break;
case AP4_ATOM_TYPE_SDP:
atom = DNew AP4_SdpAtom(size, stream);
break;
case AP4_ATOM_TYPE_IKMS:
atom = DNew AP4_IkmsAtom(size, stream);
break;
case AP4_ATOM_TYPE_ISFM:
atom = DNew AP4_IsfmAtom(size, stream);
break;
case AP4_ATOM_TYPE_HINT:
atom = DNew AP4_TrefTypeAtom(type, size, stream);
break;
// container atoms
case AP4_ATOM_TYPE_TREF:
case AP4_ATOM_TYPE_HNTI:
case AP4_ATOM_TYPE_STBL:
case AP4_ATOM_TYPE_MDIA:
case AP4_ATOM_TYPE_DINF:
case AP4_ATOM_TYPE_MINF:
case AP4_ATOM_TYPE_SCHI:
case AP4_ATOM_TYPE_SINF:
case AP4_ATOM_TYPE_UDTA:
case AP4_ATOM_TYPE_ILST:
case AP4_ATOM_TYPE_NAM:
case AP4_ATOM_TYPE_ART:
case AP4_ATOM_TYPE_WRT:
case AP4_ATOM_TYPE_ALB:
case AP4_ATOM_TYPE_DAY:
case AP4_ATOM_TYPE_TOO:
case AP4_ATOM_TYPE_CMT:
case AP4_ATOM_TYPE_GEN:
case AP4_ATOM_TYPE_TRKN:
case AP4_ATOM_TYPE_EDTS:
case AP4_ATOM_TYPE_WAVE:
case AP4_ATOM_TYPE_CMOV: {
AP4_UI32 context = m_Context;
m_Context = type; // set the context for the children
atom = DNew AP4_ContainerAtom(type, size, false, stream, *this);
m_Context = context; // restore the previous context
break;
}
// full container atoms
case AP4_ATOM_TYPE_META:
atom = DNew AP4_ContainerAtom(type, size, true, stream, *this);
break;
// other
case AP4_ATOM_TYPE_AVCC:
case AP4_ATOM_TYPE_MVCC:
atom = DNew AP4_AvcCAtom(type, size, stream);
break;
case AP4_ATOM_TYPE_TEXT:
atom = DNew AP4_TextSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_TX3G:
atom = DNew AP4_Tx3gSampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_FTAB:
atom = DNew AP4_FtabAtom(size, stream);
break;
case AP4_ATOM_TYPE_CVID:
case AP4_ATOM_TYPE_SVQ1:
case AP4_ATOM_TYPE_SVQ2:
case AP4_ATOM_TYPE_SVQ3:
case AP4_ATOM_TYPE_H261:
case AP4_ATOM_TYPE_H263:
case AP4_ATOM_TYPE_S263:
case AP4_ATOM_TYPE_JPEG:
case AP4_ATOM_TYPE_PNG:
case AP4_ATOM_TYPE_RLE:
case AP4_ATOM_TYPE_MJPA:
case AP4_ATOM_TYPE_MJPB:
case AP4_ATOM_TYPE_MJPG:
case AP4_ATOM_TYPE_DMB1:
case AP4_ATOM_TYPE_RPZA:
case AP4_ATOM_TYPE_DVC:
case AP4_ATOM_TYPE_DIV3:
case AP4_ATOM_TYPE_DIVX:
case AP4_ATOM_TYPE_8BPS:
case AP4_ATOM_TYPE_3IV1:
case AP4_ATOM_TYPE_3IV2:
case AP4_ATOM_TYPE_IV32:
case AP4_ATOM_TYPE_VP31:
case AP4_ATOM_TYPE_YV12:
atom = DNew AP4_VisualSampleEntry(type, size, stream, *this);
break;
case AP4_ATOM_TYPE_SAMR:
case AP4_ATOM_TYPE__MP3:
case AP4_ATOM_TYPE_IMA4:
case AP4_ATOM_TYPE_QDMC:
case AP4_ATOM_TYPE_QDM2:
case AP4_ATOM_TYPE_NONE:
case AP4_ATOM_TYPE_RAW:
case AP4_ATOM_TYPE_TWOS:
case AP4_ATOM_TYPE_SOWT:
case AP4_ATOM_TYPE_IN24:
case AP4_ATOM_TYPE_IN32:
case AP4_ATOM_TYPE_FL32:
case AP4_ATOM_TYPE_FL64:
case AP4_ATOM_TYPE_ALAW:
case AP4_ATOM_TYPE_ULAW:
atom = DNew AP4_AudioSampleEntry(type, size, stream, *this);
break;
case AP4_ATOM_TYPE__AC3: // AC3-in-MP4 from ISO Standard
case AP4_ATOM_TYPE_SAC3: // AC3-in-MP4 from Nero Stuff >.<
atom = DNew AP4_AC3SampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_EAC3:
atom = DNew AP4_EAC3SampleEntry(size, stream, *this);
break;
case AP4_ATOM_TYPE_CHPL:
atom = DNew AP4_ChplAtom(size, stream);
break;
case AP4_ATOM_TYPE_DATA:
atom = DNew AP4_DataAtom(size, stream);
break;
case AP4_ATOM_TYPE_DCOM:
atom = DNew AP4_DcomAtom(size, stream);
break;
case AP4_ATOM_TYPE_CMVD:
atom = DNew AP4_CmvdAtom(size, stream, *this);
break;
case AP4_ATOM_TYPE_ENDA:
atom = DNew AP4_EndaAtom(size, stream);
break;
case AP4_ATOM_TYPE_PASP:
atom = DNew AP4_PaspAtom(size, stream);
break;
default:
if(parent && parent->GetType() == AP4_ATOM_TYPE_STSD && (type & 0xffff0000) == AP4_ATOM_TYPE('m', 's', 0, 0))
{
atom = DNew AP4_AudioSampleEntry(type, size, stream, *this);
}
else // try all the external type handlers
{
atom = NULL;
AP4_List<TypeHandler>::Item* handler_item = m_TypeHandlers.FirstItem();
while (handler_item) {
TypeHandler* handler = handler_item->GetData();
if (AP4_SUCCEEDED(handler->CreateAtom(type, size, stream, atom))) {
break;
}
handler_item = handler_item->GetNext();
}
if (atom == NULL) {
// no custom handlers, create a generic atom
atom = DNew AP4_UnknownAtom(type, size, false, stream);
}
}
break;
}
// skip to the end of the atom
bytes_available -= size;
result = stream.Seek(start+size);
if (AP4_FAILED(result)) {
delete atom;
atom = NULL;
}
return result;
}
/*----------------------------------------------------------------------
| AP4_AtomFactory::CreateAtomFromStream
+---------------------------------------------------------------------*/
AP4_Result
AP4_AtomFactory::CreateAtomFromStream(AP4_ByteStream& stream,
AP4_UI32 type,
AP4_UI32 size_32,
AP4_UI64 size_64,
AP4_Atom*& atom)
{
bool atom_is_large = (size_32 == 1);
bool force_64 = (size_32==1 && ((size_64>>32) == 0));
// create the atom
if (GetContext() == AP4_ATOM_TYPE_STSD) {
// sample entry
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
switch (type) {
case AP4_ATOM_TYPE_MP4A:
atom = new AP4_Mp4aSampleEntry(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_MP4V:
atom = new AP4_Mp4vSampleEntry(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_MP4S:
atom = new AP4_Mp4sSampleEntry(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_ENCA:
atom = new AP4_EncaSampleEntry(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_ENCV:
atom = new AP4_EncvSampleEntry(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_DRMS:
atom = new AP4_DrmsSampleEntry(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_DRMI:
atom = new AP4_DrmiSampleEntry(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_AVC1:
case AP4_ATOM_TYPE_AVC2:
case AP4_ATOM_TYPE_AVC3:
case AP4_ATOM_TYPE_AVC4:
atom = new AP4_AvcSampleEntry(type, size_32, stream, *this);
break;
case AP4_ATOM_TYPE_HEV1:
case AP4_ATOM_TYPE_HVC1:
atom = new AP4_HevcSampleEntry(type, size_32, stream, *this);
break;
case AP4_ATOM_TYPE_ALAC:
case AP4_ATOM_TYPE_AC_3:
case AP4_ATOM_TYPE_EC_3:
case AP4_ATOM_TYPE_DTSC:
case AP4_ATOM_TYPE_DTSH:
case AP4_ATOM_TYPE_DTSL:
case AP4_ATOM_TYPE_DTSE:
atom = new AP4_AudioSampleEntry(type, size_32, stream, *this);
break;
case AP4_ATOM_TYPE_RTP_:
atom = new AP4_RtpHintSampleEntry(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_STPP:
atom = new AP4_SubtitleSampleEntry(type, size_32, stream, *this);
break;
default: {
// try all the external type handlers
AP4_List<TypeHandler>::Item* handler_item = m_TypeHandlers.FirstItem();
while (handler_item) {
TypeHandler* handler = handler_item->GetData();
if (AP4_SUCCEEDED(handler->CreateAtom(type, size_32, stream, GetContext(), atom))) {
break;
}
handler_item = handler_item->GetNext();
}
// no custom handler, create a generic entry
if (atom == NULL) {
atom = new AP4_UnknownSampleEntry(type, (AP4_UI32)size_64, stream);
}
break;
}
}
} else {
// regular atom
switch (type) {
case AP4_ATOM_TYPE_MOOV:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_MoovAtom::Create(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_MVHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_MvhdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_MEHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_MehdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_MFHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_MfhdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_TRAK:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_TrakAtom::Create(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_TREX:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_TrexAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_HDLR:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_HdlrAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_TKHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_TkhdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_TFHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_TfhdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_TRUN:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_TrunAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_TFRA:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_TfraAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_MFRO:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_MfroAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_MDHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_MdhdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_STSD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_StsdAtom::Create(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_STSC:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_StscAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_STCO:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_StcoAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_CO64:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_Co64Atom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_STSZ:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_StszAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_STZ2:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_Stz2Atom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_STTS:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SttsAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_CTTS:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_CttsAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_STSS:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_StssAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_IODS:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_IodsAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_ESDS:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_EsdsAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_AVCC:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_AvccAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_HVCC:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_HvccAtom::Create(size_32, stream);
break;
#if !defined(AP4_CONFIG_MINI_BUILD)
case AP4_ATOM_TYPE_UUID: {
AP4_UI08 uuid[16];
AP4_Result result = stream.Read(uuid, 16);
if (AP4_FAILED(result)) return result;
if (AP4_CompareMemory(uuid, AP4_UUID_PIFF_TRACK_ENCRYPTION_ATOM, 16) == 0) {
atom = AP4_PiffTrackEncryptionAtom::Create((AP4_UI32)size_64, stream);
} else if (AP4_CompareMemory(uuid, AP4_UUID_PIFF_SAMPLE_ENCRYPTION_ATOM, 16) == 0) {
atom = AP4_PiffSampleEncryptionAtom::Create((AP4_UI32)size_64, stream);
} else {
atom = new AP4_UnknownUuidAtom(size_64, uuid, stream);
}
break;
}
case AP4_ATOM_TYPE_8ID_:
atom = new AP4_NullTerminatedStringAtom(type, size_64, stream);
break;
case AP4_ATOM_TYPE_8BDL:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_8bdlAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_DREF:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_DrefAtom::Create(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_URL:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_UrlAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_ELST:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_ElstAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_VMHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_VmhdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_SMHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SmhdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_NMHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_NmhdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_STHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SthdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_HMHD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_HmhdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_FRMA:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_FrmaAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_SCHM:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SchmAtom::Create(size_32, &m_ContextStack, stream);
break;
case AP4_ATOM_TYPE_FTYP:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_FtypAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_TIMS:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_TimsAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_SDP_:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SdpAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_IKMS:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_IkmsAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_ISFM:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_IsfmAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_ISLT:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_IsltAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_ODHE:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_OdheAtom::Create(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_OHDR:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_OhdrAtom::Create(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_ODDA:
atom = AP4_OddaAtom::Create(size_64, stream);
break;
case AP4_ATOM_TYPE_ODAF:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_OdafAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_GRPI:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_GrpiAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_IPRO:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_IproAtom::Create(size_32, stream, *this);
break;
case AP4_ATOM_TYPE_RTP_:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_RtpAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_TFDT:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_TfdtAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_TENC:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_TencAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_SENC:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SencAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_SAIZ:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SaizAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_SAIO:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SaioAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_PDIN:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_PdinAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_BLOC:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_BlocAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_AINF:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_AinfAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_PSSH:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_PsshAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_SIDX:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SidxAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_SBGP:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SbgpAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_SGPD:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_SgpdAtom::Create(size_32, stream);
break;
case AP4_ATOM_TYPE_MKID:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
if (GetContext() == AP4_ATOM_TYPE_MARL) {
atom = AP4_MkidAtom::Create(size_32, stream);
}
break;
case AP4_ATOM_TYPE_DEC3:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
if (GetContext() == AP4_ATOM_TYPE_EC_3) {
atom = AP4_Dec3Atom::Create(size_32, stream);
}
break;
case AP4_ATOM_TYPE_XML:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_XmlAtom::Create(size_32, stream);
break;
// track ref types
case AP4_ATOM_TYPE_HINT:
case AP4_ATOM_TYPE_CDSC:
case AP4_ATOM_TYPE_SYNC:
case AP4_ATOM_TYPE_MPOD:
case AP4_ATOM_TYPE_DPND:
case AP4_ATOM_TYPE_IPIR:
case AP4_ATOM_TYPE_ALIS:
case AP4_ATOM_TYPE_CHAP:
if (GetContext() == AP4_ATOM_TYPE_TREF) {
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_TrefTypeAtom::Create(type, size_32, stream);
}
break;
#endif // AP4_CONFIG_MINI_BUILD
// container atoms
case AP4_ATOM_TYPE_MOOF:
case AP4_ATOM_TYPE_MVEX:
case AP4_ATOM_TYPE_TRAF:
case AP4_ATOM_TYPE_TREF:
case AP4_ATOM_TYPE_MFRA:
case AP4_ATOM_TYPE_HNTI:
case AP4_ATOM_TYPE_STBL:
case AP4_ATOM_TYPE_MDIA:
case AP4_ATOM_TYPE_DINF:
case AP4_ATOM_TYPE_MINF:
case AP4_ATOM_TYPE_SCHI:
case AP4_ATOM_TYPE_SINF:
case AP4_ATOM_TYPE_UDTA:
case AP4_ATOM_TYPE_ILST:
case AP4_ATOM_TYPE_EDTS:
case AP4_ATOM_TYPE_MDRI:
case AP4_ATOM_TYPE_WAVE:
if (atom_is_large) return AP4_ERROR_INVALID_FORMAT;
atom = AP4_ContainerAtom::Create(type, size_64, false, force_64, stream, *this);
break;
// containers, only at the top
case AP4_ATOM_TYPE_MARL:
if (GetContext() == 0) {
atom = AP4_ContainerAtom::Create(type, size_64, false, force_64, stream, *this);
}
break;
// full container atoms
case AP4_ATOM_TYPE_META:
case AP4_ATOM_TYPE_ODRM:
case AP4_ATOM_TYPE_ODKM:
atom = AP4_ContainerAtom::Create(type, size_64, true, force_64, stream, *this);
break;
case AP4_ATOM_TYPE_FREE:
case AP4_ATOM_TYPE_WIDE:
case AP4_ATOM_TYPE_MDAT:
// generic atoms
break;
default: {
// try all the external type handlers
AP4_List<TypeHandler>::Item* handler_item = m_TypeHandlers.FirstItem();
while (handler_item) {
TypeHandler* handler = handler_item->GetData();
if (AP4_SUCCEEDED(handler->CreateAtom(type, size_32, stream, GetContext(), atom))) {
break;
}
handler_item = handler_item->GetNext();
}
break;
}
}
}
return AP4_SUCCESS;
}
