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added trun box

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This commit is contained in:
Erik Zandvliet 2012-09-18 14:26:56 +02:00 • committed by Thulinma
parent b2b8491655
commit 837b7068c4
2 changed files with 131 additions and 5 deletions
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112
lib/mp4.cpp
View file

@ -68,7 +68,14 @@ namespace MP4{
}
std::string Box::toPrettyString(int indent){
return std::string(indent, ' ')+"Unimplemented pretty-printing for this box";
switch( ntohl(((int*)data.c_str())[1]) ) { //type is at this address
case 0x6D666864: return ((MFHD*)this)->toPrettyString(indent);
case 0x6D6F6F66: return ((MOOF*)this)->toPrettyString(indent);
case 0x61627374: return ((ABST*)this)->toPrettyString(indent);
case 0x61667274: return ((AFRT*)this)->toPrettyString(indent);
case 0x61737274: return ((ASRT*)this)->toPrettyString(indent);
default: return std::string(indent, ' ')+"Unimplemented pretty-printing for box "+std::string(data,4,4)+"\n";
}
}
void Box::setInt8( char newData, size_t index ) {
@ -316,6 +323,7 @@ namespace MP4{
}
void ABST::regenerate( ) {
data.resize( 26 );
int myOffset = 26;
//0-terminated movieIdentifier
memcpy( (char*)data.c_str() + myOffset, movieIdentifier.c_str(), movieIdentifier.size() + 1);
@ -379,11 +387,11 @@ namespace MP4{
r += std::string(indent+1, ' ')+"CurrMediaTime "+JSON::Value((long long int)getInt32(6)).asString()+"\n";
r += std::string(indent+1, ' ')+"Segment Run Tables "+JSON::Value((long long int)segmentTables.size()).asString()+"\n";
for( uint32_t i = 0; i < segmentTables.size(); i++ ) {
r += ((ASRT*)segmentTables[i])->toPrettyString(indent+2)+"\n";
r += segmentTables[i]->toPrettyString(indent+2);
}
r += std::string(indent+1, ' ')+"Fragment Run Tables "+JSON::Value((long long int)fragmentTables.size()).asString()+"\n";
for( uint32_t i = 0; i < fragmentTables.size(); i++ ) {
r += ((AFRT*)fragmentTables[i])->toPrettyString(indent+2)+"\n";
r += fragmentTables[i]->toPrettyString(indent+2);
}
return r;
}
@ -422,6 +430,7 @@ namespace MP4{
}
void AFRT::regenerate( ) {
data.resize( 8 );
int myOffset = 8;
setInt8( qualityModifiers.size(), myOffset );
myOffset ++;
@ -461,7 +470,7 @@ namespace MP4{
}
r += std::string(indent+1, ' ')+"Fragments "+JSON::Value((long long int)fragmentRunTable.size()).asString()+"\n";
for( uint32_t i = 0; i < fragmentRunTable.size(); i ++ ) {
r += std::string(indent+2, ' ')+"Duration "+JSON::Value((long long int)fragmentRunTable[i].duration).asString()+", starting at "+JSON::Value((long long int)fragmentRunTable[i].firstFragment).asString()+" @ "+JSON::Value((long long int)fragmentRunTable[i].firstTimestamp).asString();
r += std::string(indent+2, ' ')+"Duration "+JSON::Value((long long int)fragmentRunTable[i].duration).asString()+", starting at "+JSON::Value((long long int)fragmentRunTable[i].firstFragment).asString()+" @ "+JSON::Value((long long int)fragmentRunTable[i].firstTimestamp).asString()+"\n";
}
return r;
}
@ -493,6 +502,7 @@ namespace MP4{
}
void ASRT::regenerate( ) {
data.resize( 4 );
int myOffset = 4;
setInt8( qualityModifiers.size(), myOffset );
myOffset ++;
@ -527,7 +537,7 @@ namespace MP4{
}
r += std::string(indent+1, ' ')+"Segments "+JSON::Value((long long int)segmentRunTable.size()).asString()+"\n";
for( uint32_t i = 0; i < segmentRunTable.size(); i ++ ) {
r += std::string(indent+2, ' ')+JSON::Value((long long int)segmentRunTable[i].fragmentsPerSegment).asString()+" fragments per, starting at "+JSON::Value((long long int)segmentRunTable[i].firstSegment).asString();
r += std::string(indent+2, ' ')+JSON::Value((long long int)segmentRunTable[i].fragmentsPerSegment).asString()+" fragments per, starting at "+JSON::Value((long long int)segmentRunTable[i].firstSegment).asString()+"\n";
}
return r;
}
@ -540,6 +550,12 @@ namespace MP4{
setInt32( newSequenceNumber, 4 );
}
std::string MFHD::toPrettyString( int indent ) {
std::string r;
r += std::string(indent, ' ')+"Movie Fragment Header\n";
r += std::string(indent+1, ' ')+"SequenceNumber: "+JSON::Value((long long int)getInt32(4)).asString()+"\n";
}
MOOF::MOOF() : Box("moof") {}
void MOOF::addContent( Box* newContent ) {
@ -548,6 +564,7 @@ namespace MP4{
}
void MOOF::regenerate() {
data.resize( 0 );
int myOffset = 0;
//retrieve box for each entry
for( std::deque<Box*>::iterator it = content.begin(); it != content.end(); it++ ) {
@ -556,4 +573,89 @@ namespace MP4{
}
isUpdated = false;
}
std::string MOOF::toPrettyString( int indent ) {
std::string r;
r += std::string(indent, ' ')+"Movie Fragment\n";
for( uint32_t i = 0; i < content.size(); i++ ) {
r += content[i]->toPrettyString(indent+2);
}
}
TRUN::TRUN() : Box("trun") {
setInt8(0,0);
}
void TRUN::setFlags( long newFlags ) {
setInt24(newFlags,1);
isUpdated = true;
}
void TRUN::setDataOffset( long newOffset ) {
dataOffset = newOffset;
isUpdated = true;
}
void TRUN::setFirstSampleFlags( char sampleDependsOn, char sampleIsDependedOn, char sampleHasRedundancy, char sampleIsDifferenceSample ) {
firstSampleFlags = getSampleFlags( sampleDependsOn, sampleIsDependedOn, sampleHasRedundancy, sampleIsDifferenceSample );
isUpdated = true;
}
void TRUN::addSampleInformation( long newDuration, long newSize, char sampleDependsOn, char sampleIsDependedOn, char sampleHasRedundancy,char sampleIsDifferenceSample, long newCompositionTimeOffset ) {
trunSampleInformation newSample;
newSample.sampleDuration = newDuration;
newSample.sampleSize = newSize;
newSample.sampleFlags = getSampleFlags( sampleDependsOn, sampleIsDependedOn, sampleHasRedundancy, sampleIsDifferenceSample );
newSample.sampleCompositionTimeOffset = newCompositionTimeOffset;
allSamples.push_back( newSample );
isUpdated = true;
}
long TRUN::getSampleFlags( char sampleDependsOn, char sampleIsDependedOn, char sampleHasRedundancy, char sampleIsDifferenceSample ) {
long sampleFlags = ( sampleDependsOn & 0x03 );
sampleFlags <<= 2;
sampleFlags += ( sampleIsDependedOn & 0x03 );
sampleFlags <<= 2;
sampleFlags += ( sampleHasRedundancy & 0x03 );
sampleFlags <<= 5;
sampleFlags += ( sampleIsDifferenceSample & 0x01 );
sampleFlags <<= 17;
sampleFlags += 0x0000FFFF;
return sampleFlags;
}
void TRUN::regenerate( ) {
data.resize( 4 );
int myOffset = 4;
setInt32( allSamples.size(), myOffset );
myOffset += 4;
if( getInt24( 1 ) & 0x000001 ) {
setInt32( dataOffset, myOffset );
myOffset += 4;
}
if( getInt24( 1 ) & 0x000004 ) {
setInt32( firstSampleFlags, myOffset );
myOffset += 4;
}
for( std::deque<trunSampleInformation>::iterator it = allSamples.begin(); it != allSamples.end(); it++ ) {
if( getInt24( 1 ) & 0x000100 ) {
setInt32( (*it).sampleDuration, myOffset );
myOffset += 4;
}
if( getInt24( 1 ) & 0x000200 ) {
setInt32( (*it).sampleSize, myOffset );
myOffset += 4;
}
if( getInt24( 1 ) & 0x000400 ) {
setInt32( (*it).sampleFlags, myOffset );
myOffset += 4;
}
if( getInt24( 1 ) & 0x000800 ) {
setInt32( (*it).sampleCompositionTimeOffset, myOffset );
myOffset += 4;
}
}
isUpdated = false;
}
};

24
lib/mp4.h
View file

@ -124,6 +124,7 @@ namespace MP4{
public:
MFHD();
void setSequenceNumber( long newSequenceNumber );
std::string toPrettyString(int indent = 0);
};//MFHD Box
class MOOF : public Box {
@ -131,7 +132,30 @@ namespace MP4{
MOOF();
void addContent( Box* newContent );
void regenerate( );
std::string toPrettyString(int indent = 0);
private:
std::deque<Box*> content;
};//MOOF Box
struct trunSampleInformation {
long sampleDuration;
long sampleSize;
long sampleFlags;
long sampleCompositionTimeOffset;
};
class TRUN : public Box {
public:
TRUN();
void setFlags( long newFlags );
void setDataOffset( long newOffset );
void setFirstSampleFlags( char sampleDependsOn, char sampleIsDependedOn, char sampleHasRedundancy, char sampleIsDifferenceSample );
void addSampleInformation( long newDuration, long newSize, char sampleDependsOn, char sampleIsDependedOn, char sampleHasRedundancy,char sampleIsDifferenceSample, long newCompositionTimeOffset );
void regenerate();
private:
long getSampleFlags( char sampleDependsOn, char sampleIsDependedOn, char sampleHasRedundancy, char sampleIsDifferenceSample );
long dataOffset;
long firstSampleFlags;
std::deque<trunSampleInformation> allSamples;
};
};