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mistserver/lib/mp4.cpp
Erik Zandvliet 70fe4bbe98 ABST Done
2012-09-26 14:42:05 +02:00

924 lines
32 KiB
C++
Raw Blame History

#include <stdlib.h> //for malloc and free
#include <string.h> //for memcpy
#include <arpa/inet.h> //for htonl and friends
#include "mp4.h"
#include "json.h"
#define Int64 long long int
/// Contains all MP4 format related code.
namespace MP4{
/// Creates a new box, optionally using the indicated pointer for storage.
/// If manage is set to true, the pointer will be realloc'ed when the box needs to be resized.
/// If the datapointer is NULL, manage is assumed to be true even if explicitly given as false.
/// If managed, the pointer will be free'd upon destruction.
Box::Box(char * datapointer, bool manage){
data = datapointer;
managed = manage;
if (data == 0){
clear();
}else{
data_size = ntohl(((int*)data)[0]);
}
}
/// If managed, this will free the data pointer.
Box::~Box(){
if (managed && data != 0){
free(data);
data = 0;
}
}
/// Returns the values at byte positions 4 through 7.
std::string Box::getType() {
return std::string(data+4,4);
}
/// Returns true if the given 4-byte boxtype is equal to the values at byte positions 4 through 7.
bool Box::isType( char* boxType ) {
return !memcmp(boxType, data + 4, 4);
}
/// Reads out a whole box (if possible) from newData, copying to the internal data storage and removing from the input string.
/// \returns True on success, false otherwise.
bool Box::read(std::string & newData){
if (!managed){return false;}
if (newData.size() > 4){
size_t size = ntohl( ((int*)newData.c_str())[0] );
if (newData.size() >= size){
void * ret = malloc(size);
if (!ret){return false;}
free(data);
data = (char*)ret;
memcpy(data, newData.c_str(), size);
newData.erase( 0, size );
return true;
}
}
return false;
}
/// Returns the total boxed size of this box, including the header.
size_t Box::boxedSize() {
return ntohl(((int*)data)[0]);
}
/// Retruns the size of the payload of thix box, excluding the header.
/// This value is defined as boxedSize() - 8.
size_t Box::payloadSize() {
return boxedSize() - 8;
}
/// Returns a copy of the data pointer.
char * Box::asBox() {
return data;
}
/// Makes this box managed if it wasn't already, resetting the internal storage to 8 bytes (the minimum).
/// If this box wasn't managed, the original data is left intact - otherwise it is free'd.
/// If it was somehow impossible to allocate 8 bytes (should never happen), this will cause segfaults later.
void Box::clear() {
if (data && managed){free(data);}
managed = true;
data = (char*)malloc(8);
if (data){
data_size = 8;
((int*)data)[0] = htonl(data_size);
}else{
data_size = 0;
}
}
/// 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+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 0x61737274: return ((ASRT*)this)->toPrettyString(indent); break;
default: return std::string(indent, ' ')+"Unimplemented pretty-printing for box "+std::string(data+4,4)+"\n"; break;
}
}
/// Sets the 8 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::setInt8( char newData, size_t index ) {
index += 8;
if (index >= boxedSize()){
if (!reserve(index, 0, 1)){return;}
}
data[index] = newData;
}
/// Gets the 8 bits integer at the given index.
/// Attempts to resize the data pointer if the index is out of range.
/// Returns zero if resizing failed.
char Box::getInt8( size_t index ) {
index += 8;
if (index >= boxedSize()){
if (!reserve(index, 0, 1)){return 0;}
}
return data[index];
}
/// Sets the 16 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::setInt16( short newData, size_t index ) {
index += 8;
if (index+1 >= boxedSize()){
if (!reserve(index, 0, 2)){return;}
}
newData = htons( newData );
memcpy( data + index, (char*)&newData, 2 );
}
/// Gets the 16 bits integer at the given index.
/// Attempts to resize the data pointer if the index is out of range.
/// Returns zero if resizing failed.
short Box::getInt16( size_t index ) {
index += 8;
if (index+1 >= boxedSize()){
if (!reserve(index, 0, 2)){return 0;}
}
short result;
memcpy( (char*)&result, data + index, 2 );
return ntohs(result);
}
/// Sets the 24 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::setInt24( long newData, size_t index ) {
index += 8;
if (index+2 >= boxedSize()){
if (!reserve(index, 0, 3)){return;}
}
data[index] = (newData & 0x00FF0000) >> 16;
data[index+1] = (newData & 0x0000FF00) >> 8;
data[index+2] = (newData & 0x000000FF);
}
/// Gets the 24 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 Box::getInt24( size_t index ) {
index += 8;
if (index+2 >= boxedSize()){
if (!reserve(index, 0, 3)){return 0;}
}
long result = data[index];
result <<= 8;
result += data[index+1];
result <<= 8;
result += data[index+2];
return result;
}
/// Sets the 32 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::setInt32( long newData, size_t index ) {
index += 8;
if (index+3 >= boxedSize()){
if (!reserve(index, 0, 4)){return;}
}
newData = htonl( newData );
memcpy( data + index, (char*)&newData, 4 );
}
/// Gets the 32 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 Box::getInt32( size_t index ) {
index += 8;
if (index+3 >= boxedSize()){
if (!reserve(index, 0, 4)){return 0;}
}
long result;
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( Int64 newData, size_t index ) {
index += 8;
if (index+7 >= boxedSize()){
if (!reserve(index, 0, 8)){return;}
}
data[index] = ( newData & 0xFF00000000000000 ) >> 56;
data[index+1] = ( newData & 0x00FF000000000000 ) >> 48;
data[index+2] = ( newData & 0x0000FF0000000000 ) >> 40;
data[index+3] = ( newData & 0x000000FF00000000 ) >> 32;
data[index+4] = ( newData & 0x00000000FF000000 ) >> 24;
data[index+5] = ( newData & 0x0000000000FF0000 ) >> 16;
data[index+6] = ( newData & 0x000000000000FF00 ) >> 8;
data[index+7] = ( newData & 0x00000000000000FF );
}
/// 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.
Int64 Box::getInt64( size_t index ) {
index += 8;
if (index+7 >= boxedSize()){
if (!reserve(index, 0, 8)){return 0;}
}
long result = data[index];
result <<= 8; result += data[index+1];
result <<= 8; result += data[index+2];
result <<= 8; result += data[index+3];
result <<= 8; result += data[index+4];
result <<= 8; result += data[index+5];
result <<= 8; result += data[index+6];
result <<= 8; result += data[index+7];
return result;
}
/// Sets the NULL-terminated string at the given index.
/// Will attempt to resize if the string doesn't fit.
/// Fails silently if resizing failed.
void Box::setString(std::string newData, size_t index ) {
setString( (char*)newData.c_str(), newData.size(), index );
}
/// Sets the NULL-terminated string at the given index.
/// Will attempt to resize if the string doesn't fit.
/// Fails silently if resizing failed.
void Box::setString(char* newData, size_t size, size_t index ) {
index += 8;
if (index >= boxedSize()){
if (!reserve(index, 0, 1)){return;}
data[index] = 0;
}
if (getStringLen(index) != size){
if (!reserve(index, getStringLen(index)+1, size+1)){return;}
}
memcpy(data + index, newData, size+1);
}
/// Gets the NULL-terminated string at the given index.
/// Will attempt to resize if the string is out of range.
/// Returns null if resizing failed.
char * Box::getString(size_t index){
index += 8;
if (index >= boxedSize()){
if (!reserve(index, 0, 1)){return 0;}
data[index] = 0;
}
return data+index;
}
/// Returns the length of the NULL-terminated string at the given index.
/// Returns 0 if out of range.
size_t Box::getStringLen(size_t index){
index += 8;
if (index >= boxedSize()){return 0;}
return strlen(data+index);
}
/// 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 Box::reserve(size_t position, size_t current, size_t wanted){
if (current == wanted){return true;}
if (current < wanted){
//make bigger
if (boxedSize() + (wanted-current) > data_size){
//realloc if managed, otherwise fail
if (!managed){return false;}
void * ret = realloc(data, boxedSize() + (wanted-current));
if (!ret){return false;}
data = (char*)ret;
data_size = boxedSize() + (wanted-current);
}
//move data behind backward, if any
if (boxedSize() - (position+current) > 0){
memmove(data+position+wanted, data+position+current, boxedSize() - (position+current));
}
//calculate and set new size
int newSize = boxedSize() + (wanted-current);
((int*)data)[0] = htonl(newSize);
return true;
}else{
//make smaller
//move data behind forward, if any
if (boxedSize() - (position+current) > 0){
memmove(data+position+wanted, data+position+current, boxedSize() - (position+current));
}
//calculate and set new size
int newSize = boxedSize() - (current-wanted);
((int*)data)[0] = htonl(newSize);
return true;
}
}
ABST::ABST( ) {
memcpy(data + 4, "abst", 4);
setVersion( 0 );
setFlags( 0 );
setBootstrapinfoVersion( 0 );
setProfile( 0 );
setLive( 1 );
setUpdate( 0 );
setTimeScale( 1000 );
setCurrentMediaTime( 0 );
setSmpteTimeCodeOffset( 0 );
std::string empty;
setMovieIdentifier( empty );
setDrmData( empty );
setMetaData( empty );
}
void ABST::setVersion(char newVersion){setInt8(newVersion, 0);}
char ABST::getVersion(){return getInt8(0);}
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){
//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(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(bool newUpdate) {
//update = bit 5 of byte 8.
setInt8((getInt8(8) & 0xEF) + (newUpdate ? 0x08 : 0), 8);
}
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::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);
}
///\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);
}
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 ) {
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 ) {
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);
}
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);
}
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::setSegmentRunTable( ASRT newSegment, long no ) {
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++){
if (i < getSegmentRunTableCount()){
tempLoc += Box(data+8+tempLoc,false).boxedSize();
} else {
if(!reserve(tempLoc, 0, 8 * (no - getSegmentRunTableCount()))){return;};
for( int j = 0; j < (no - getSegmentRunTableCount())*8; j += 8 ) {
setInt32(8,tempLoc+j);
}
tempLoc += (no - getSegmentRunTableCount() ) * 8;
setInt8(no, countLoc);//set new serverEntryCount
break;
}
}
ASRT oldSegment = Box(data+8+tempLoc,false);
if(!reserve(tempLoc,oldSegment.boxedSize(),newSegment.boxedSize())){return;}
memcpy( data+8+tempLoc, newSegment.asBox(), newSegment.boxedSize() );
}
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 );
}
void ABST::setFragmentRunTable( AFRT newFragment, long no ) {
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 tempLoc = offset + 1;//segmentRuntableCount
for (int i = 0; i < getSegmentRunTableCount(); i++ ) {
tempLoc += Box(data+8+tempLoc,false).boxedSize();//walk through all segments
}
int countloc = tempLoc;
tempLoc += 1;
for (int i = 0; i < no; i++){
if (i < getFragmentRunTableCount()){
tempLoc += Box(data+8+tempLoc,false).boxedSize();
} else {
if(!reserve(tempLoc, 0, 8 * (no - getFragmentRunTableCount()))){return;};
for( int j = 0; j < (no - getFragmentRunTableCount())*8; j += 8 ) {
setInt32(8,tempLoc+j);
}
tempLoc += (no - getFragmentRunTableCount() ) * 8;
setInt8(no, countLoc);//set new serverEntryCount
break;
}
}
AFRT oldFragment = Box(data+8+tempLoc,false);
if(!reserve(tempLoc,oldFragment.boxedSize(),newFragment.boxedSize())){return;}
memcpy( data+8+tempLoc, newFragment.asBox(), newFragment.boxedSize() );
}
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;
}
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, ' ') << "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(){
memcpy(data + 4, "afrt", 4);
setVersion( 0 );
setUpdate( 0 );
setTimeScale( 1000 );
}
void AFRT::setVersion( char newVersion ) {
setInt8( newVersion ,0 );
}
void AFRT::setUpdate( long newUpdate ) {
setInt24( newUpdate, 1 );
}
void AFRT::setTimeScale( long newScale ) {
setInt32( newScale, 4 );
}
void AFRT::addQualityEntry( std::string newQuality ) {
qualityModifiers.push_back( newQuality );
}
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 );
}
std::string AFRT::toPrettyString(int indent){
std::string r;
r += std::string(indent, ' ')+"Fragment Run Table\n";
if (getInt24(1)){
r += std::string(indent+1, ' ')+"Update\n";
}else{
r += std::string(indent+1, ' ')+"Replacement or new table\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((Int64)fragmentRunTable.size()).asString()+"\n";
for( uint32_t i = 0; i < fragmentRunTable.size(); i ++ ) {
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(){
memcpy(data + 4, "asrt", 4);
setVersion( 0 );
setUpdate( 0 );
}
void ASRT::setVersion( char newVersion ) {
setInt8( newVersion, 0 );
}
long ASRT::getVersion(){return getInt8(0);}
void ASRT::setUpdate( long newUpdate ) {
setInt24( newUpdate, 1 );
}
long ASRT::getUpdate(){return getInt24(1);}
long ASRT::getQualityEntryCount(){
return getInt8(4);
}
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);
}
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);
}
long ASRT::getSegmentRunEntryCount() {
int tempLoc = 5;//position of qualityentry count;
for (int i = 0; i < getQualityEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
return getInt32(tempLoc);
}
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::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" << 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, ' ') << "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.str();
}
MFHD::MFHD(){
setInt32(0,0);
memcpy(data + 4, "mfhd", 4);
}
void MFHD::setSequenceNumber( long newSequenceNumber ) {
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((Int64)getInt32(4)).asString()+"\n";
}
MOOF::MOOF(){
memcpy(data + 4, "moof", 4);
}
void MOOF::addContent( Box* newContent ) {
content.push_back( newContent );
}
std::string MOOF::toPrettyString( int indent ) {
}
TRUN::TRUN(){
memcpy(data + 4, "trun", 4);
}
void TRUN::setFlags( long newFlags ) {
setInt24(newFlags,1);
}
void TRUN::setDataOffset( long newOffset ) {
dataOffset = newOffset;
}
void TRUN::setFirstSampleFlags( char sampleDependsOn, char sampleIsDependedOn, char sampleHasRedundancy, char sampleIsDifferenceSample ) {
firstSampleFlags = getSampleFlags( sampleDependsOn, sampleIsDependedOn, sampleHasRedundancy, sampleIsDifferenceSample );
}
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 );
}
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;
}
};
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