Implemented AFRA box.
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Thulinma
parent
5b3a53e9f5
commit
4450fbdd70
2 changed files with 218 additions and 0 deletions
183
lib/mp4.cpp
183
lib/mp4.cpp
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@ -1354,4 +1354,187 @@ namespace MP4{
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return r.str();
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}
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AFRA::AFRA(){
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memcpy(data + 4, "afra", 4);
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setInt32(0, 9);//entrycount = 0
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setFlags(0);
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}
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void AFRA::setVersion(long newVersion){
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setInt8(newVersion, 0);
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}
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long AFRA::getVersion(){
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return getInt8(0);
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}
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void AFRA::setFlags(long newFlags){
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setInt24(newFlags, 1);
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}
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long AFRA::getFlags(){
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return getInt24(1);
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}
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void AFRA::setLongIDs(bool newVal){
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if (newVal){
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setInt8((getInt8(4) & 0x7F) + 0x80, 4);
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}else{
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setInt8((getInt8(4) & 0x7F), 4);
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}
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}
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bool AFRA::getLongIDs(){
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return getInt8(4) & 0x80;
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}
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void AFRA::setLongOffsets(bool newVal){
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if (newVal){
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setInt8((getInt8(4) & 0xBF) + 0x40, 4);
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}else{
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setInt8((getInt8(4) & 0xBF), 4);
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}
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}
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bool AFRA::getLongOffsets(){
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return getInt8(4) & 0x40;
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}
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void AFRA::setGlobalEntries(bool newVal){
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if (newVal){
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setInt8((getInt8(4) & 0xDF) + 0x20, 4);
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}else{
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setInt8((getInt8(4) & 0xDF), 4);
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}
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}
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bool AFRA::getGlobalEntries(){
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return getInt8(4) & 0x20;
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}
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void AFRA::setTimeScale(long newVal){
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setInt32(newVal, 5);
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}
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long AFRA::getTimeScale(){
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return getInt32(5);
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}
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long AFRA::getEntryCount(){
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return getInt32(9);
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}
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void AFRA::setEntry(afraentry newEntry, long no){
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int entrysize = 12;
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if (getLongOffsets()){entrysize = 16;}
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setInt64(newEntry.time, 13+entrysize*no);
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if (getLongOffsets()){
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setInt64(newEntry.offset, 21+entrysize*no);
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}else{
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setInt32(newEntry.offset, 21+entrysize*no);
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}
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if (no+1 > getEntryCount()){setInt32(no+1, 9);}
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}
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afraentry AFRA::getEntry(long no){
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afraentry ret;
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int entrysize = 12;
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if (getLongOffsets()){entrysize = 16;}
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ret.time = getInt64(13+entrysize*no);
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if (getLongOffsets()){
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ret.offset = getInt64(21+entrysize*no);
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}else{
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ret.offset = getInt32(21+entrysize*no);
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}
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}
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long AFRA::getGlobalEntryCount(){
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if (!getGlobalEntries()){return 0;}
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int entrysize = 12;
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if (getLongOffsets()){entrysize = 16;}
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return getInt32(13+entrysize*getEntryCount());
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}
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void AFRA::setGlobalEntry(globalafraentry newEntry, long no){
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int offset = 13+12*getEntryCount()+4;
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if (getLongOffsets()){offset = 13+16*getEntryCount()+4;}
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int entrysize = 20;
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if (getLongIDs()){entrysize += 4;}
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if (getLongOffsets()){entrysize += 8;}
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setInt64(newEntry.time, offset+entrysize*no);
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if (getLongIDs()){
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setInt32(newEntry.segment, offset+entrysize*no+8);
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setInt32(newEntry.fragment, offset+entrysize*no+12);
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}else{
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setInt16(newEntry.segment, offset+entrysize*no+8);
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setInt16(newEntry.fragment, offset+entrysize*no+10);
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}
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if (getLongOffsets()){
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setInt64(newEntry.afraoffset, offset+entrysize*no+entrysize-16);
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setInt64(newEntry.offsetfromafra, offset+entrysize*no+entrysize-8);
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}else{
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setInt32(newEntry.afraoffset, offset+entrysize*no+entrysize-8);
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setInt32(newEntry.offsetfromafra, offset+entrysize*no+entrysize-4);
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}
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if (getInt32(offset-4) < no+1){setInt32(no+1, offset-4);}
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}
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globalafraentry AFRA::getGlobalEntry(long no){
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globalafraentry ret;
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int offset = 13+12*getEntryCount()+4;
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if (getLongOffsets()){offset = 13+16*getEntryCount()+4;}
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int entrysize = 20;
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if (getLongIDs()){entrysize += 4;}
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if (getLongOffsets()){entrysize += 8;}
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ret.time = getInt64(offset+entrysize*no);
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if (getLongIDs()){
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ret.segment = getInt32(offset+entrysize*no+8);
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ret.fragment = getInt32(offset+entrysize*no+12);
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}else{
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ret.segment = getInt16(offset+entrysize*no+8);
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ret.fragment = getInt16(offset+entrysize*no+10);
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}
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if (getLongOffsets()){
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ret.afraoffset = getInt64(offset+entrysize*no+entrysize-16);
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ret.offsetfromafra = getInt64(offset+entrysize*no+entrysize-8);
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}else{
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ret.afraoffset = getInt32(offset+entrysize*no+entrysize-8);
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ret.offsetfromafra = getInt32(offset+entrysize*no+entrysize-4);
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}
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return ret;
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}
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std::string AFRA::toPrettyString(long indent){
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std::stringstream r;
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r << std::string(indent, ' ') << "[afra] Fragment Random Access" << std::endl;
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r << std::string(indent+1, ' ') << "Version " << getVersion() << std::endl;
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r << std::string(indent+1, ' ') << "Flags " << getFlags() << std::endl;
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r << std::string(indent+1, ' ') << "Long IDs " << getLongIDs() << std::endl;
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r << std::string(indent+1, ' ') << "Long Offsets " << getLongOffsets() << std::endl;
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r << std::string(indent+1, ' ') << "Global Entries " << getGlobalEntries() << std::endl;
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r << std::string(indent+1, ' ') << "TimeScale " << getTimeScale() << std::endl;
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long count = getEntryCount();
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r << std::string(indent+1, ' ') << "Entries (" << count << ") " << std::endl;
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for (long i = 0; i < count; ++i){
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afraentry tmpent = getEntry(i);
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r << std::string(indent+1, ' ') << i << ": Time " << tmpent.time << ", Offset " << tmpent.offset << std::endl;
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}
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if (getGlobalEntries()){
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count = getGlobalEntryCount();
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r << std::string(indent+1, ' ') << "Global Entries (" << count << ") " << std::endl;
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for (long i = 0; i < count; ++i){
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globalafraentry tmpent = getGlobalEntry(i);
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r << std::string(indent+1, ' ') << i << ": T " << tmpent.time << ", S" << tmpent.segment << "F" << tmpent.fragment << ", " << tmpent.afraoffset << "/" << tmpent.offsetfromafra << std::endl;
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}
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}
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return r.str();
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}
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};
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35
lib/mp4.h
35
lib/mp4.h
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@ -234,4 +234,39 @@ namespace MP4{
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std::string toPrettyString(long indent = 0);
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};
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struct afraentry {
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long long time;
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long long offset;
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};
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struct globalafraentry {
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long long time;
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long segment;
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long fragment;
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long long afraoffset;
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long long offsetfromafra;
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};
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class AFRA : public Box {
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public:
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AFRA();
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void setVersion(long newVersion);
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long getVersion();
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void setFlags(long newFlags);
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long getFlags();
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void setLongIDs(bool newVal);
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bool getLongIDs();
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void setLongOffsets(bool newVal);
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bool getLongOffsets();
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void setGlobalEntries(bool newVal);
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bool getGlobalEntries();
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void setTimeScale(long newVal);
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long getTimeScale();
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long getEntryCount();
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void setEntry(afraentry newEntry, long no);
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afraentry getEntry(long no);
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long getGlobalEntryCount();
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void setGlobalEntry(globalafraentry newEntry, long no);
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globalafraentry getGlobalEntry(long no);
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std::string toPrettyString(long indent = 0);
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};
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};
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