void MP4File::Make3GPCompliant(const char* fileName, char* majorBrand, u_int32_t minorVersion, char** supportedBrands, u_int32_t supportedBrandsCount, bool deleteIodsAtom)
{
char brand[5] = "3gp5";
char* _3gpSupportedBrands[1] = { (char*)&brand };
if (majorBrand) {
if (!supportedBrands || !supportedBrandsCount) {
throw new MP4Error("Invalid parameters", "MP4File::Make3GPCompliant");
}
}
MakeFtypAtom(
majorBrand ? majorBrand : (char*)brand,
majorBrand ? minorVersion : _3GP_MINOR_VERSION,
majorBrand ? supportedBrands : (char**)_3gpSupportedBrands,
majorBrand ? supportedBrandsCount : 1);
if (deleteIodsAtom) {
// Delete the iods atom, if it exists....
MP4Atom* iodsAtom = m_pRootAtom->FindAtom("moov.iods");
if (iodsAtom) {
MP4Atom* moovAtom = m_pRootAtom->FindAtom("moov");
ASSERT(moovAtom);
moovAtom->DeleteChildAtom(iodsAtom);
}
}
}
bool
genericSetItem( MP4File& file, const MP4ItmfItem* item )
{
if( !item || !item->__handle )
return false;
MP4Atom* ilst = file.FindAtom( "moov.udta.meta.ilst" );
if( !ilst )
return false;
MP4ItemAtom* const old = static_cast<MP4ItemAtom*>(item->__handle);
const uint32_t childCount = ilst->GetNumberOfChildAtoms();
uint32_t fidx = numeric_limits<uint32_t>::max();
for( uint32_t i = 0; i < childCount; i++ ) {
MP4Atom* atom = ilst->GetChildAtom( i );
if( atom == old ) {
fidx = i;
break;
}
}
if( fidx == numeric_limits<uint32_t>::max() )
return false;
ilst->DeleteChildAtom( old );
delete old;
MP4ItemAtom& itemAtom = *(MP4ItemAtom*)MP4Atom::CreateAtom( file, ilst, item->code );
ilst->InsertChildAtom( &itemAtom, fidx );
return __itemModelToAtom( *item, itemAtom );
}
bool
PictureAspectRatioBox::remove( MP4FileHandle file, uint16_t trackIndex )
{
MP4Atom* coding;
if( findCoding( file, trackIndex, coding ))
throw new MP4Exception( "supported coding not found" );
MP4Atom* pasp;
if( findPictureAspectRatioBox( file, *coding, pasp ))
throw new MP4Exception( "pasp-box not found" );
coding->DeleteChildAtom( pasp );
delete pasp;
return false;
}
bool
genericRemoveItem( MP4File& file, const MP4ItmfItem* item )
{
if( !item || !item->__handle )
return false;
MP4Atom* ilst = file.FindAtom( "moov.udta.meta.ilst" );
if( !ilst )
return false;
MP4ItemAtom* const old = static_cast<MP4ItemAtom*>(item->__handle);
ilst->DeleteChildAtom( old );
delete old;
return true;
}
void MP4File::Make3GPCompliant(const char* fileName, char* majorBrand, u_int32_t minorVersion, char** supportedBrands, u_int32_t supportedBrandsCount, bool deleteIodsAtom)
{
char brand[5] = "3gp5";
char* _3gpSupportedBrands[1] = { (char*)&brand };
if (majorBrand) {
if (!supportedBrands || !supportedBrandsCount) {
throw new MP4Error("Invalid parameters", "MP4File::Make3GPCompliant");
}
}
m_fileName = MP4Stralloc(fileName);
m_mode = 'r';
// first load meta-info into memory
Open("rb");
ReadFromFile();
CacheProperties(); // of moov atom
// now switch over to writing the new file
MP4Free(m_fileName);
// create a temporary file
m_fileName = MP4Stralloc(TempFileName());
MakeFtypAtom(
majorBrand ? majorBrand : (char*)brand,
majorBrand ? minorVersion : _3GP_MINOR_VERSION,
majorBrand ? supportedBrands : (char**)_3gpSupportedBrands,
majorBrand ? supportedBrandsCount : 1);
if (deleteIodsAtom) {
// Delete the iods atom, if it exists....
MP4Atom* iodsAtom = m_pRootAtom->FindAtom("moov.iods");
if (iodsAtom) {
MP4Atom* moovAtom = m_pRootAtom->FindAtom("moov");
ASSERT(moovAtom);
moovAtom->DeleteChildAtom(iodsAtom);
}
}
FILE* pReadFile = m_pFile;
m_pFile = NULL;
m_mode = 'w';
Open("wb");
SetIntegerProperty("moov.mvhd.modificationTime",
MP4GetAbsTimestamp());
// writing meta info in the optimal order
((MP4RootAtom*)m_pRootAtom)->BeginOptimalWrite();
// write data in optimal order
RewriteMdat(pReadFile, m_pFile);
// finish writing
((MP4RootAtom*)m_pRootAtom)->FinishOptimalWrite();
// cleanup
fclose(m_pFile);
m_pFile = NULL;
fclose(pReadFile);
// move temporary file into place
Rename(m_fileName, fileName);
}