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rewritten abst and asrt, including pretty-printing

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This commit is contained in:
Erik Zandvliet 2012-09-24 15:31:41 +02:00 • committed by Thulinma
parent 27f2ea931d
commit 770b6e3567
2 changed files with 465 additions and 350 deletions
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681
lib/mp4.cpp
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@ -4,6 +4,8 @@
#include "mp4.h"
#include "json.h"
#define Int64 long long int
/// Contains all MP4 format related code.
namespace MP4{
@ -49,7 +51,7 @@ namespace MP4{
void * ret = malloc(size);
if (!ret){return false;}
free(data);
data = ret;
data = (char*)ret;
memcpy(data, newData.c_str(), size);
newData.erase( 0, size );
return true;
@ -80,7 +82,7 @@ namespace MP4{
void Box::clear() {
if (data && managed){free(data);}
managed = true;
data = malloc(8);
data = (char*)malloc(8);
if (data){
data_size = 8;
((int*)data)[0] = htonl(data_size);
@ -92,13 +94,13 @@ namespace MP4{
/// Attempts to typecast this Box to a more specific type and call the toPrettyString() function of that type.
/// If this failed, it will print out a message saying pretty-printing is not implemented for <boxtype>.
std::string Box::toPrettyString(int indent){
switch( ntohl(((int*)data.c_str())[1]) ) { //type is at this address
case 0x6D666864: return ((MFHD*)this)->toPrettyString(indent); break;
case 0x6D6F6F66: return ((MOOF*)this)->toPrettyString(indent); break;
switch (ntohl( *((int*)(data+4)) )){ //type is at this address
//case 0x6D666864: return ((MFHD*)this)->toPrettyString(indent); break;
//case 0x6D6F6F66: return ((MOOF*)this)->toPrettyString(indent); break;
case 0x61627374: return ((ABST*)this)->toPrettyString(indent); break;
case 0x61667274: return ((AFRT*)this)->toPrettyString(indent); break;
//case 0x61667274: return ((AFRT*)this)->toPrettyString(indent); break;
case 0x61737274: return ((ASRT*)this)->toPrettyString(indent); break;
default: return std::string(indent, ' ')+"Unimplemented pretty-printing for box "+std::string(data,4,4)+"\n"; break;
default: return std::string(indent, ' ')+"Unimplemented pretty-printing for box "+std::string(data+4,4)+"\n"; break;
}
}
@ -133,7 +135,7 @@ namespace MP4{
if (!reserve(index, 0, 2)){return;}
}
newData = htons( newData );
memcpy( (void*)(data.c_str() + index), (void*)&newData, 2 );
memcpy( data + index, (char*)&newData, 2 );
}
/// Gets the 16 bits integer at the given index.
@ -145,7 +147,7 @@ namespace MP4{
if (!reserve(index, 0, 2)){return 0;}
}
short result;
memcpy( (void*)&result, (void*)(data.c_str() + index), 2 );
memcpy( (char*)&result, data + index, 2 );
return ntohs(result);
}
@ -187,7 +189,7 @@ namespace MP4{
if (!reserve(index, 0, 4)){return;}
}
newData = htonl( newData );
memcpy( (char*)data.c_str() + index, (char*)&newData, 4 );
memcpy( data + index, (char*)&newData, 4 );
}
/// Gets the 32 bits integer at the given index.
@ -199,14 +201,14 @@ namespace MP4{
if (!reserve(index, 0, 4)){return 0;}
}
long result;
memcpy( (char*)&result, (char*)data.c_str() + index, 4 );
memcpy( (char*)&result, data + index, 4 );
return ntohl(result);
}
/// Sets the 64 bits integer at the given index.
/// Attempts to resize the data pointer if the index is out of range.
/// Fails silently if resizing failed.
void Box::setInt64( long long int newData, size_t index ) {
void Box::setInt64( Int64 newData, size_t index ) {
index += 8;
if (index+7 >= boxedSize()){
if (!reserve(index, 0, 8)){return;}
@ -224,7 +226,7 @@ namespace MP4{
/// Gets the 64 bits integer at the given index.
/// Attempts to resize the data pointer if the index is out of range.
/// Returns zero if resizing failed.
long long int Box::getInt64( size_t index ) {
Int64 Box::getInt64( size_t index ) {
index += 8;
if (index+7 >= boxedSize()){
if (!reserve(index, 0, 8)){return 0;}
@ -285,7 +287,7 @@ namespace MP4{
/// Attempts to reserve enough space for wanted bytes of data at given position, where current bytes of data is now reserved.
/// This will move any existing data behind the currently reserved space to the proper location after reserving.
/// \returns True on success, false otherwise.
bool reserve(size_t position, size_t current, size_t wanted){
bool Box::reserve(size_t position, size_t current, size_t wanted){
if (current == wanted){return true;}
if (current < wanted){
//make bigger
@ -294,12 +296,12 @@ namespace MP4{
if (!managed){return false;}
void * ret = realloc(data, boxedSize() + (wanted-current));
if (!ret){return false;}
data = ret;
data = (char*)ret;
data_size = boxedSize() + (wanted-current);
}
//move data behind backward, if any
if (boxedSize() - (position+current) > 0){
memmove(position+wanted, position+current, boxedSize() - (position+current));
memmove(data+position+wanted, data+position+current, boxedSize() - (position+current));
}
//calculate and set new size
int newSize = boxedSize() + (wanted-current);
@ -309,7 +311,7 @@ namespace MP4{
//make smaller
//move data behind forward, if any
if (boxedSize() - (position+current) > 0){
memmove(position+wanted, position+current, boxedSize() - (position+current));
memmove(data+position+wanted, data+position+current, boxedSize() - (position+current));
}
//calculate and set new size
int newSize = boxedSize() - (current-wanted);
@ -318,7 +320,8 @@ namespace MP4{
}
}
ABST::ABST( ) : Box("abst") {
ABST::ABST( ) {
memcpy(data + 4, "abst", 4);
setVersion( 0 );
setFlags( 0 );
setBootstrapinfoVersion( 0 );
@ -328,186 +331,340 @@ namespace MP4{
setTimeScale( 1000 );
setCurrentMediaTime( 0 );
setSmpteTimeCodeOffset( 0 );
setMovieIdentifier( "" );
setDrmData( "" );
setMetaData( "" );
std::string empty;
setMovieIdentifier( empty );
setDrmData( empty );
setMetaData( empty );
}
void ABST::setVersion( char newVersion ) {
setInt8( newVersion, 0 );
}
void ABST::setVersion(char newVersion){setInt8(newVersion, 0);}
void ABST::setFlags( long newFlags ) {
setInt24( newFlags, 1 );
}
char ABST::getVersion(){return getInt8(0);}
void ABST::setBootstrapinfoVersion( long newVersion ) {
setInt32( newVersion, 4 );
}
void ABST::setFlags(long newFlags){setInt24(newFlags, 1);}
long ABST::getFlags(){return getInt24(1);}
void ABST::setBootstrapinfoVersion(long newVersion){setInt32(newVersion, 4);}
long ABST::getBootstrapinfoVersion(){return getInt32(4);}
void ABST::setProfile(char newProfile){
setInt8((getInt8(8) & 0x3F) + ((newProfile & 0x02) << 6), 8);
//profile = bit 1 and 2 of byte 8.
setInt8((getInt8(8) & 0x3F) + ((newProfile & 0x03) << 6), 8);
}
char ABST::getProfile(){return (getInt8(8) & 0xC0);};
void ABST::setLive( char newLive ) {
setInt8((getInt8(8) & 0xDF) + ((newLive & 0x01) << 5), 8);
void ABST::setLive(bool newLive){
//live = bit 4 of byte 8.
setInt8((getInt8(8) & 0xDF) + (newLive ? 0x10 : 0 ), 8);
}
bool ABST::getLive(){return (getInt8(8) & 0x10);}
void ABST::setUpdate( char newUpdate ) {
setInt8((getInt8(8) & 0xEF) + ((newUpdate & 0x01) << 4), 8);
void ABST::setUpdate(bool newUpdate) {
//update = bit 5 of byte 8.
setInt8((getInt8(8) & 0xEF) + (newUpdate ? 0x08 : 0), 8);
}
void ABST::setTimeScale( long newScale ) {
setInt32(newScale, 9);
bool ABST::getUpdate(){return (getInt8(8) & 0x08);}
void ABST::setTimeScale(long newScale){setInt32(newScale, 9);}
long ABST::getTimeScale(){return getInt32(9);}
void ABST::setCurrentMediaTime(Int64 newTime){setInt64(newTime, 13);}
Int64 ABST::getCurrentMediaTime(){return getInt64(13);}
void ABST::setSmpteTimeCodeOffset(Int64 newTime){setInt64(newTime, 21);}
Int64 ABST::getSmpteTimeCodeOffset(){return getInt64(21);}
void ABST::setMovieIdentifier(std::string & newIdentifier){setString(newIdentifier, 29);}
char* ABST::getMovieIdentifier(){return getString(29);}
long ABST::getServerEntryCount(){
int countLoc = 29 + getStringLen(29)+1;
return getInt8(countLoc);
}
void ABST::setCurrentMediaTime( long long int newTime ) {
setInt64( newTime, 13);
}
void ABST::setSmpteTimeCodeOffset( long long int newTime ) {
setInt64( newTime, 21);
}
void ABST::setMovieIdentifier( std::string newIdentifier ) {
movieIdentifier = newIdentifier;
isUpdated = true;
}
void ABST::addServerEntry( std::string newEntry ) {
if( std::find( Servers.begin(), Servers.end(), newEntry ) == Servers.end() ) {
Servers.push_back( newEntry );
isUpdated = true;
}
}
void ABST::delServerEntry( std::string delEntry ) {
for( std::deque<std::string>::iterator it = Servers.begin(); it != Servers.end(); it++ ) {
if( (*it) == delEntry ) {
Servers.erase( it );
isUpdated = true;
void ABST::setServerEntry(std::string & newEntry, long no){
int countLoc = 29 + getStringLen(29)+1;
int tempLoc = countLoc+1;
for (int i = 0; i < no; i++){
if (i < getServerEntryCount()){
tempLoc += getStringLen(tempLoc)+1;
} else {
if(!reserve(tempLoc, 0, no - getServerEntryCount())){return;};
memset(data+tempLoc, 0, no - getServerEntryCount());
tempLoc += no - getServerEntryCount();
setInt8(no, countLoc);//set new serverEntryCount
break;
}
}
setString(newEntry, tempLoc);
}
void ABST::addQualityEntry( std::string newEntry ) {
if( std::find( Qualities.begin(), Qualities.end(), newEntry ) == Qualities.end() ) {
Servers.push_back( newEntry );
isUpdated = true;
}
///\return Empty string if no > serverEntryCount(), serverEntry[no] otherwise.
const char* ABST::getServerEntry(long no){
if (no > getServerEntryCount()){return "";}
int tempLoc = 29+getStringLen(29)+1 + 1;//position of entry count;
for (int i = 0; i < no; i++){tempLoc += getStringLen(tempLoc)+1;}
return getString(tempLoc);
}
void ABST::delQualityEntry( std::string delEntry ) {
for( std::deque<std::string>::iterator it = Qualities.begin(); it != Qualities.end(); it++ ) {
if( (*it) == delEntry ) {
Qualities.erase( it );
isUpdated = true;
long ABST::getQualityEntryCount(){
int countLoc = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
countLoc += getStringLen(countLoc)+1;
}
return getInt8(countLoc);
}
void ABST::setQualityEntry(std::string & newEntry, long no){
int countLoc = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
countLoc += getStringLen(countLoc)+1;
}
int tempLoc = countLoc+1;
for (int i = 0; i < no; i++){
if (i < getQualityEntryCount()){
tempLoc += getStringLen(tempLoc)+1;
} else {
if(!reserve(tempLoc, 0, no - getQualityEntryCount())){return;};
memset(data+tempLoc, 0, no - getQualityEntryCount());
tempLoc += no - getQualityEntryCount();
setInt8(no, countLoc);//set new qualityEntryCount
break;
}
}
setString(newEntry, tempLoc);
}
const char* ABST::getQualityEntry(long no){
if (no > getQualityEntryCount()){return "";}
int tempLoc = 29+getStringLen(29)+1 + 1;//position of serverentry count;
for (int i = 0; i < getServerEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
tempLoc += 1;
for (int i = 0; i < no; i++){tempLoc += getStringLen(tempLoc)+1;}
return getString(tempLoc);
}
void ABST::setDrmData( std::string newDrm ) {
drmData = newDrm;
isUpdated = true;
long offset = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset++;
for( int i = 0; i< getQualityEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
setString(newDrm, offset);
}
char* ABST::getDrmData() {
long offset = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset++;
for( int i = 0; i< getQualityEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
return getString(offset);
}
void ABST::setMetaData( std::string newMetaData ) {
metaData = newMetaData;
isUpdated = true;
long offset = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset++;
for( int i = 0; i< getQualityEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset+=getStringLen(offset)+1;
setString(newMetaData, offset);
}
void ABST::addSegmentRunTable( Box * newSegment ) {
segmentTables.push_back(newSegment);
isUpdated = true;
char* ABST::getMetaData() {
long offset = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset++;
for( int i = 0; i< getQualityEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset+=getStringLen(offset)+1;
return getString(offset);
}
void ABST::addFragmentRunTable( Box * newFragment ) {
fragmentTables.push_back(newFragment);
isUpdated = true;
long ABST::getSegmentRunTableCount(){
long offset = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset++;
for( int i = 0; i< getQualityEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset+=getStringLen(offset)+1;//DrmData
offset+=getStringLen(offset)+1;//MetaData
return getInt8(offset);
}
void ABST::regenerate( ) {
if (!isUpdated){return;}//skip if already up to date
data.resize(29);
int myOffset = 29;
//0-terminated movieIdentifier
memcpy( (char*)data.c_str() + myOffset, movieIdentifier.c_str(), movieIdentifier.size() + 1);
myOffset += movieIdentifier.size() + 1;
//8-bit server amount
setInt8( Servers.size(), myOffset );
myOffset ++;
//0-terminated string for each entry
for( std::deque<std::string>::iterator it = Servers.begin(); it != Servers.end(); it++ ) {
memcpy( (char*)data.c_str() + myOffset, (*it).c_str(), (*it).size() + 1);
myOffset += (*it).size() + 1;
void ABST::setSegmentRunTable( ASRT newSegment, long no ) {
long offset = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
//8-bit quality amount
setInt8( Qualities.size(), myOffset );
myOffset ++;
//0-terminated string for each entry
for( std::deque<std::string>::iterator it = Qualities.begin();it != Qualities.end(); it++ ) {
memcpy( (char*)data.c_str() + myOffset, (*it).c_str(), (*it).size() + 1);
myOffset += (*it).size() + 1;
offset++;
for( int i = 0; i< getQualityEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
//0-terminated DrmData
memcpy( (char*)data.c_str() + myOffset, drmData.c_str(), drmData.size() + 1);
myOffset += drmData.size() + 1;
//0-terminated MetaData
memcpy( (char*)data.c_str() + myOffset, metaData.c_str(), metaData.size() + 1);
myOffset += metaData.size() + 1;
//8-bit segment run amount
setInt8( segmentTables.size(), myOffset );
myOffset ++;
//retrieve box for each entry
for( std::deque<Box*>::iterator it = segmentTables.begin(); it != segmentTables.end(); it++ ) {
memcpy( (char*)data.c_str() + myOffset, (*it)->asBox().c_str(), (*it)->boxedSize() );
myOffset += (*it)->boxedSize();
}
//8-bit fragment run amount
setInt8( fragmentTables.size(), myOffset );
myOffset ++;
//retrieve box for each entry
for( std::deque<Box*>::iterator it = fragmentTables.begin(); it != fragmentTables.end(); it++ ) {
memcpy( (char*)data.c_str() + myOffset, (*it)->asBox().c_str(), (*it)->boxedSize() + 1);
myOffset += (*it)->boxedSize();
}
isUpdated = false;
}
std::string ABST::toPrettyString( int indent ) {
regenerate();
std::stringbuffer r;
r << std::string(indent, ' ') << "Bootstrap Info" << std::endl;
r << std::string(indent+1, ' ') << "Version " << getInt8(0) << std::endl;
if( getInt8(5) & 0x10 ) {
r << std::string(indent+1, ' ') << "Update" << std::endl;
offset+=getStringLen(offset)+1;//DrmData
offset+=getStringLen(offset)+1;//MetaData
int countLoc = offset;
int tempLoc = countLoc + 1;//segmentRuntableCount
for (int i = 0; i < no; i++){
if (i < getSegmentRunTableCount()){
tempLoc += Box(data+8+tempLoc,false).boxedSize();
} else {
r << std::string(indent+1, ' ') << "Replacement or new table" << std::endl;
if(!reserve(tempLoc, 0, 8 * (no - getSegmentRunTableCount()))){return;};
for( int j = 0; j < (no - getSegmentRunTableCount())*8; j += 8 ) {
setInt32(8,tempLoc+j);
}
if( getInt8(5) & 0x20 ) {
tempLoc += (no - getServerEntryCount() ) * 8;
setInt8(no, countLoc);//set new serverEntryCount
break;
}
}
}
ASRT & ABST::getSegmentRunTable( long no ) {
static Box result;
if( no > getSegmentRunTableCount() ) {
static Box res;
return (ASRT&)res;
}
long offset = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset++;
for( int i = 0; i< getQualityEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset+=getStringLen(offset)+1;//DrmData
offset+=getStringLen(offset)+1;//MetaData
int countLoc = offset;
int tempLoc = countLoc + 1;//segmentRuntableCount
for (int i = 0; i < no; i++){
tempLoc += Box(data+8+tempLoc,false).boxedSize();
}
result = Box(data+8+tempLoc,false);
return (ASRT&)result;
}
long ABST::getFragmentRunTableCount() {
long offset = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset++;
for( int i = 0; i< getQualityEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset+=getStringLen(offset)+1;//DrmData
offset+=getStringLen(offset)+1;//MetaData
int countLoc = offset;
int tempLoc = countLoc + 1;//segmentRuntableCount
for (int i = 0; i < getSegmentRunTableCount(); i++){
tempLoc += Box(data+8+tempLoc,false).boxedSize();
}
return getInt8( tempLoc );
}
//tot hier
AFRT & ABST::getFragmentRunTable( long no ) {
static Box result;
if( no > getFragmentRunTableCount() ) {
static Box res;
return (AFRT&)res;
}
long offset = 29 + getStringLen(29)+1 + 1;
for( int i = 0; i< getServerEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset++;
for( int i = 0; i< getQualityEntryCount(); i++ ) {
offset += getStringLen(offset)+1;
}
offset+=getStringLen(offset)+1;//DrmData
offset+=getStringLen(offset)+1;//MetaData
int countLoc = offset;
int tempLoc = countLoc + 1;//segmentRuntableCount
for (int i = 0; i < getSegmentRunTableCount(); i++){
tempLoc += Box(data+8+tempLoc,false).boxedSize();
}
tempLoc ++;//segmentRuntableCount
for (int i = 0; i < no; i++){
tempLoc += Box(data+8+tempLoc,false).boxedSize();
}
result = Box(data+8+tempLoc,false);
return (AFRT&)result;
}
std::string ABST::toPrettyString( long indent ) {
std::stringstream r;
r << std::string(indent, ' ') << "[abst] Bootstrap Info" << std::endl;
r << std::string(indent+1, ' ') << "Version " << getVersion() << std::endl;
r << std::string(indent+1, ' ') << "BootstrapinfoVersion " << getBootstrapinfoVersion() << std::endl;
r << std::string(indent+1, ' ') << "Profile " << getProfile() << std::endl;
if( getLive() ) {
r << std::string(indent+1, ' ' ) << "Live" << std::endl;
}else{
r << std::string(indent+1, ' ' ) << "Recorded" << std::endl;
}
r << std::string(indent+1, ' ') << "Profile " << ( getInt8(5) & 0xC0 ) << std::endl;
r << std::string(indent+1, ' ') << "Timescale " << getInt64(10) << std::endl;
r << std::string(indent+1, ' ') << "CurrMediaTime " << getInt32(6) << std::endl;
r << std::string(indent+1, ' ') << "Segment Run Tables " << segmentTables.size() << std::endl;
for( uint32_t i = 0; i < segmentTables.size(); i++ ) {
r += segmentTables[i]->toPrettyString(indent+2);
if( getUpdate() ) {
r << std::string(indent+1, ' ') << "Update" << std::endl;
} else {
r << std::string(indent+1, ' ') << "Replacement or new table" << std::endl;
}
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 += fragmentTables[i]->toPrettyString(indent+2);
r << std::string(indent+1, ' ') << "Timescale " << getTimeScale() << std::endl;
r << std::string(indent+1, ' ') << "CurrMediaTime " << getCurrentMediaTime() << std::endl;
r << std::string(indent+1, ' ') << "SmpteTimeCodeOffset " << getSmpteTimeCodeOffset() << std::endl;
r << std::string(indent+1, ' ') << "MovieIdentifier " << getMovieIdentifier() << std::endl;
r << std::string(indent+1, ' ') << "ServerEntryTable (" << getServerEntryCount() << ")" << std::endl;
for( int i = 0; i < getServerEntryCount(); i++ ) {
r << std::string(indent+2, ' ') << getServerEntry(i) << std::endl;
}
r << std::string(indent+1, ' ') << "QualityEntryTable (" << getQualityEntryCount() << ")" << std::endl;
for( int i = 0; i < getQualityEntryCount(); i++ ) {
r << std::string(indent+2, ' ') << getQualityEntry(i) << std::endl;
}
r << std::string(indent+1, ' ') << "DrmData " << getDrmData() << std::endl;
r << std::string(indent+1, ' ') << "MetaData " << getMetaData() << std::endl;
r << std::string(indent+1, ' ') << "SegmentRunTableEntries (" << getSegmentRunTableCount() << ")" << std::endl;
for( uint32_t i = 0; i < getSegmentRunTableCount(); i++ ) {
r << ((Box)getSegmentRunTable(i)).toPrettyString(indent+2);
}
r << std::string(indent+1, ' ')+"FragmentRunTableEntries (" << getFragmentRunTableCount() << ")" << std::endl;
for( uint32_t i = 0; i < getFragmentRunTableCount(); i++ ) {
r << ((Box)getFragmentRunTable(i)).toPrettyString(indent+2);
}
return r.str();
}
AFRT::AFRT() : Box("afrt"){
AFRT::AFRT(){
memcpy(data + 4, "afrt", 4);
setVersion( 0 );
setUpdate( 0 );
setTimeScale( 1000 );
@ -527,44 +684,15 @@ namespace MP4{
void AFRT::addQualityEntry( std::string newQuality ) {
qualityModifiers.push_back( newQuality );
isUpdated = true;
}
void AFRT::addFragmentRun( long firstFragment, long long int firstTimestamp, long duration, char discontinuity ) {
void AFRT::addFragmentRun( long firstFragment, Int64 firstTimestamp, long duration, char discontinuity ) {
fragmentRun newRun;
newRun.firstFragment = firstFragment;
newRun.firstTimestamp = firstTimestamp;
newRun.duration = duration;
newRun.discontinuity = discontinuity;
fragmentRunTable.push_back( newRun );
isUpdated = true;
}
void AFRT::regenerate( ) {
if (!isUpdated){return;}//skip if already up to date
data.resize( 8 );
int myOffset = 8;
setInt8( qualityModifiers.size(), myOffset );
myOffset ++;
//0-terminated string for each entry
for( std::deque<std::string>::iterator it = qualityModifiers.begin();it != qualityModifiers.end(); it++ ) {
memcpy( (char*)data.c_str() + myOffset, (*it).c_str(), (*it).size() + 1);
myOffset += (*it).size() + 1;
}
setInt32( fragmentRunTable.size(), myOffset );
myOffset += 4;
//table values for each entry
for( std::deque<fragmentRun>::iterator it = fragmentRunTable.begin();it != fragmentRunTable.end(); it++ ) {
setInt32( (*it).firstFragment, myOffset );
myOffset += 4;
setInt64( (*it).firstTimestamp, myOffset );
myOffset += 8;
setInt32( (*it).duration, myOffset );
myOffset += 4;
setInt8( (*it).discontinuity, myOffset );
myOffset += 1;
}
isUpdated = false;
}
std::string AFRT::toPrettyString(int indent){
@ -575,19 +703,20 @@ namespace MP4{
}else{
r += std::string(indent+1, ' ')+"Replacement or new table\n";
}
r += std::string(indent+1, ' ')+"Timescale "+JSON::Value((long long int)getInt32(4)).asString()+"\n";
r += std::string(indent+1, ' ')+"Qualities "+JSON::Value((long long int)qualityModifiers.size()).asString()+"\n";
r += std::string(indent+1, ' ')+"Timescale "+JSON::Value((Int64)getInt32(4)).asString()+"\n";
r += std::string(indent+1, ' ')+"Qualities "+JSON::Value((Int64)qualityModifiers.size()).asString()+"\n";
for( uint32_t i = 0; i < qualityModifiers.size(); i++ ) {
r += std::string(indent+2, ' ')+"\""+qualityModifiers[i]+"\"\n";
}
r += std::string(indent+1, ' ')+"Fragments "+JSON::Value((long long int)fragmentRunTable.size()).asString()+"\n";
r += std::string(indent+1, ' ')+"Fragments "+JSON::Value((Int64)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()+"\n";
r += std::string(indent+2, ' ')+"Duration "+JSON::Value((Int64)fragmentRunTable[i].duration).asString()+", starting at "+JSON::Value((Int64)fragmentRunTable[i].firstFragment).asString()+" @ "+JSON::Value((Int64)fragmentRunTable[i].firstTimestamp).asString()+"\n";
}
return r;
}
ASRT::ASRT() : Box("asrt") {
ASRT::ASRT(){
memcpy(data + 4, "asrt", 4);
setVersion( 0 );
setUpdate( 0 );
}
@ -596,67 +725,104 @@ namespace MP4{
setInt8( newVersion, 0 );
}
long ASRT::getVersion(){return getInt8(0);}
void ASRT::setUpdate( long newUpdate ) {
setInt24( newUpdate, 1 );
}
void ASRT::addQualityEntry( std::string newQuality ) {
qualityModifiers.push_back( newQuality );
isUpdated = true;
long ASRT::getUpdate(){return getInt24(1);}
long ASRT::getQualityEntryCount(){
return getInt8(4);
}
void ASRT::addSegmentRun( long firstSegment, long fragmentsPerSegment ) {
segmentRun newRun;
newRun.firstSegment = firstSegment;
newRun.fragmentsPerSegment = fragmentsPerSegment;
segmentRunTable.push_back( newRun );
isUpdated = true;
void ASRT::setQualityEntry(std::string & newEntry, long no){
int countLoc = 4;
int tempLoc = countLoc+1;
for (int i = 0; i < no; i++){
if (i < getQualityEntryCount()){
tempLoc += getStringLen(tempLoc)+1;
} else {
if(!reserve(tempLoc, 0, no - getQualityEntryCount())){return;};
memset(data+tempLoc, 0, no - getQualityEntryCount());
tempLoc += no - getQualityEntryCount();
setInt8(no, countLoc);//set new qualityEntryCount
break;
}
}
setString(newEntry, tempLoc);
}
void ASRT::regenerate( ) {
if (!isUpdated){return;}//skip if already up to date
data.resize( 4 );
int myOffset = 4;
setInt8( qualityModifiers.size(), myOffset );
myOffset ++;
//0-terminated string for each entry
for( std::deque<std::string>::iterator it = qualityModifiers.begin();it != qualityModifiers.end(); it++ ) {
memcpy( (char*)data.c_str() + myOffset, (*it).c_str(), (*it).size() + 1);
myOffset += (*it).size() + 1;
const char* ASRT::getQualityEntry(long no){
if (no > getQualityEntryCount()){return "";}
int tempLoc = 5;//position of qualityentry count;
for (int i = 0; i < no; i++){tempLoc += getStringLen(tempLoc)+1;}
return getString(tempLoc);
}
setInt32( segmentRunTable.size(), myOffset );
myOffset += 4;
//table values for each entry
for( std::deque<segmentRun>::iterator it = segmentRunTable.begin();it != segmentRunTable.end(); it++ ) {
setInt32( (*it).firstSegment, myOffset );
myOffset += 4;
setInt32( (*it).fragmentsPerSegment, myOffset );
myOffset += 4;
long ASRT::getSegmentRunEntryCount() {
int tempLoc = 5;//position of qualityentry count;
for (int i = 0; i < getQualityEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
return getInt32(tempLoc);
}
isUpdated = false;
void ASRT::setSegmentRun( long firstSegment, long fragmentsPerSegment, long no ) {
int tempLoc = 5;//position of qualityentry count;
for (int i = 0; i < getSegmentRunEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
int countLoc = tempLoc;
tempLoc += 4;
for (int i = 0; i < no; i++){
if (i < getSegmentRunEntryCount()){
tempLoc += 8;
} else {
if(!reserve(tempLoc, 0, (no - getQualityEntryCount())*8)){return;};
memset(data+tempLoc, 0, (no - getQualityEntryCount())*8);
tempLoc += (no - getQualityEntryCount())*8;
setInt32(no, countLoc);//set new qualityEntryCount
break;
}
}
setInt32(firstSegment,tempLoc);
setInt32(fragmentsPerSegment,tempLoc+4);
}
asrt_runtable ASRT::getSegmentRun( long no ) {
int tempLoc = 5;//position of qualityentry count;
for (int i = 0; i < getSegmentRunEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
int countLoc = tempLoc;
tempLoc += 4;
for (int i = 0; i < no; i++){tempLoc += 8;}
asrt_runtable res;
res.firstSegment = getInt32(tempLoc);
res.fragmentsPerSegment = getInt32(tempLoc+4);
return res;
}
std::string ASRT::toPrettyString(int indent){
std::string r;
r += std::string(indent, ' ')+"Segment Run Table\n";
if (getInt24(1)){
r += std::string(indent+1, ' ')+"Update\n";
std::stringstream r;
r << std::string(indent, ' ') << "[asrt] Segment Run Table" << std::endl;
r << std::string(indent+1, ' ') << "Version " << getVersion() << std::endl;
if (getUpdate()){
r << std::string(indent+1, ' ') << "Update" << std::endl;
}else{
r += std::string(indent+1, ' ')+"Replacement or new table\n";
r << std::string(indent+1, ' ') << "Replacement or new table" << std::endl;
}
r += std::string(indent+1, ' ')+"Qualities "+JSON::Value((long long int)qualityModifiers.size()).asString()+"\n";
for( uint32_t i = 0; i < qualityModifiers.size(); i++ ) {
r += std::string(indent+2, ' ')+"\""+qualityModifiers[i]+"\"\n";
r << std::string(indent+1, ' ') << "QualityEntryTable (" << getQualityEntryCount() << ")" << std::endl;
for( int i = 0; i < getQualityEntryCount(); i++ ) {
r << std::string(indent+2, ' ') << getQualityEntry(i) << std::endl;
}
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()+"\n";
r << std::string(indent+1, ' ') << "SegmentRunEntryTable (" << getSegmentRunEntryCount()<< ")" << std::endl;
for( int i = 0; i < getSegmentRunEntryCount(); i ++ ) {
r << std::string(indent+2, ' ') << "FirstSegment " << getSegmentRun(i).firstSegment << std::endl;
r << std::string(indent+2, ' ') << "FragmentsPerSegment " << getSegmentRun(i).fragmentsPerSegment << std::endl;
}
return r;
return r.str();
}
MFHD::MFHD() : Box("mfhd") {
MFHD::MFHD(){
setInt32(0,0);
memcpy(data + 4, "mfhd", 4);
}
void MFHD::setSequenceNumber( long newSequenceNumber ) {
@ -666,54 +832,35 @@ namespace MP4{
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";
r += std::string(indent+1, ' ')+"SequenceNumber: "+JSON::Value((Int64)getInt32(4)).asString()+"\n";
}
MOOF::MOOF() : Box("moof") {}
MOOF::MOOF(){
memcpy(data + 4, "moof", 4);
}
void MOOF::addContent( Box* newContent ) {
content.push_back( newContent );
isUpdated = true;
}
void MOOF::regenerate() {
if (!isUpdated){return;}//skip if already up to date
data.resize( 0 );
int myOffset = 0;
//retrieve box for each entry
for( std::deque<Box*>::iterator it = content.begin(); it != content.end(); it++ ) {
memcpy( (char*)data.c_str() + myOffset, (*it)->asBox().c_str(), (*it)->boxedSize() + 1);
myOffset += (*it)->boxedSize();
}
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);
}
return r;
}
TRUN::TRUN() : Box("trun") {
setInt8(0,0);
TRUN::TRUN(){
memcpy(data + 4, "trun", 4);
}
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 ) {
@ -723,7 +870,6 @@ namespace MP4{
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 ) {
@ -738,39 +884,4 @@ namespace MP4{
sampleFlags += 0x0000FFFF;
return sampleFlags;
}
void TRUN::regenerate( ) {
if (!isUpdated){return;}//skip if already up to date
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;
}
};

110
lib/mp4.h
View file

@ -1,7 +1,9 @@
#pragma once
#include <string>
#include <iostream>
#include <cstdio>
#include <stdint.h>
#include <sstream>
#include <deque>
#include <algorithm>
#include "json.h"
@ -46,49 +48,6 @@ namespace MP4{
bool managed; ///< If false, will not attempt to resize/free the data pointer.
};//Box Class
/// ABST Box class
class ABST: public Box {
public:
ABST();
void setVersion(char newVersion);
char getVersion();
void setFlags(long newFlags);
long getFlags();
void setBootstrapinfoVersion(long newVersion);
long getBootstrapinfoVersion();
void setProfile(char newProfile);
char getProfile();
void setLive(char newLive);
char getLive();
void setUpdate(char newUpdate);
char getUpdate();
void setTimeScale(long newTimeScale);
long getTimeScale();
void setCurrentMediaTime(long long int newTime);
long long int getCurrentMediaTime();
void setSmpteTimeCodeOffset(long long int newTime);
long long int getSmpteTimeCodeOffset();
void setMovieIdentifier(std::string & newIdentifier);
char * getMovieIdentifier();
void setServerEntry(std::string & entry, int no);
char * getServerEntry(int no);
int getServerEntryCount();
void setQualityEntry(std::string & entry, int no);
char * getQualityEntry(int no);
int getQualityEntryCount();
void setDrmData(std::string newDrm);
char * getDrmData();
void setMetaData(std::string newMetaData);
char * getMetaData();
void setSegmentRunTable(ASRT table, int no);
ASRT & getSegmentRunTable(int no);
int getSegmentRunTableCount();
void setFragmentRunTables(AFRT table, int no);
AFRT & getFragmentRunTable(int no);
int getFragmentRunTableCount();
std::string toPrettyString(int indent = 0);
};//ABST Box
struct fragmentRun {
long firstFragment;
long long int firstTimestamp;
@ -113,24 +72,26 @@ namespace MP4{
std::deque<fragmentRun> fragmentRunTable;
};//AFRT Box
struct segmentRun {
uint32_t firstSegment;
uint32_t fragmentsPerSegment;
};//segmentRun
struct asrt_runtable{
long firstSegment;
long fragmentsPerSegment;
};
/// ASRT Box class
class ASRT : public Box {
public:
ASRT();
void setVersion( char newVersion );
long getVersion();
void setUpdate( long newUpdate );
void addQualityEntry( std::string newQuality );
void addSegmentRun( long firstSegment, long fragmentsPerSegment );
void regenerate();
long getUpdate();
long getQualityEntryCount();
void setQualityEntry( std::string & newQuality, long no );
const char* getQualityEntry( long no );
long getSegmentRunEntryCount();
void setSegmentRun( long firstSegment, long fragmentsPerSegment, long no );
asrt_runtable getSegmentRun( long no );
std::string toPrettyString(int indent = 0);
private:
std::deque<std::string> qualityModifiers;
std::deque<segmentRun> segmentRunTable;
};//ASRT Box
class MFHD : public Box {
@ -150,6 +111,49 @@ namespace MP4{
std::deque<Box*> content;
};//MOOF Box
/// ABST Box class
class ABST: public Box {
public:
ABST();
void setVersion(char newVersion);
char getVersion();
void setFlags(long newFlags);
long getFlags();
void setBootstrapinfoVersion(long newVersion);
long getBootstrapinfoVersion();
void setProfile(char newProfile);
char getProfile();
void setLive(bool newLive);
bool getLive();
void setUpdate(bool newUpdate);
bool getUpdate();
void setTimeScale(long newTimeScale);
long getTimeScale();
void setCurrentMediaTime(long long int newTime);
long long int getCurrentMediaTime();
void setSmpteTimeCodeOffset(long long int newTime);
long long int getSmpteTimeCodeOffset();
void setMovieIdentifier(std::string & newIdentifier);
char * getMovieIdentifier();
long getServerEntryCount();
void setServerEntry(std::string & entry, long no);
const char * getServerEntry(long no);
long getQualityEntryCount();
void setQualityEntry(std::string & entry, long no);
const char * getQualityEntry(long no);
void setDrmData(std::string newDrm);
char * getDrmData();
void setMetaData(std::string newMetaData);
char * getMetaData();
long getSegmentRunTableCount();
void setSegmentRunTable(ASRT table, long no);
ASRT & getSegmentRunTable(long no);
long getFragmentRunTableCount();
void setFragmentRunTable(AFRT table, long no);
AFRT & getFragmentRunTable(long no);
std::string toPrettyString(long indent = 0);
};//ABST Box
struct trunSampleInformation {
long sampleDuration;
long sampleSize;