#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;
    payloadOffset = 8;
    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){
      payloadOffset = 8;
      long long int size = ntohl( ((int*)newData.c_str())[0] );
      if( size == 1) {
        if( newData.size() > 16) {
          size = 0 + ntohl( ((int*)newData.c_str())[2] );
          size <<= 32;
          size += ntohl( ((int*)newData.c_str())[3] );
          payloadOffset = 16;
        } else {
          return false;
        }
      }
      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.
  long long int Box::boxedSize() {
    if( payloadOffset == 16 ) {
      return ((long long int)ntohl( ((int*)data)[2] ) << 32) + ntohl( ((int*)data)[3] );
    }
    return ntohl( ((int*)data)[0] );
  }

  /// Retruns the size of the payload of thix box, excluding the header.
  /// This value is defined as boxedSize() - 8.
  long long int Box::payloadSize() {
    return boxedSize() - payloadOffset;
  }

  /// Returns a copy of the data pointer.
  char * Box::asBox() {
    return data;
  }
  
  char * Box::payload() {
    return data + payloadOffset;
  }

  /// 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;
    payloadOffset = 8;
    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 0x61667261: return ((AFRA*)this)->toPrettyString(indent); break;
      case 0x61737274: return ((ASRT*)this)->toPrettyString(indent); break;
      case 0x7472756E: return ((TRUN*)this)->toPrettyString(indent); break;
      case 0x74726166: return ((TRAF*)this)->toPrettyString(indent); break;
      case 0x74666864: return ((TFHD*)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 += payloadOffset;
    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 += payloadOffset;
    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 += payloadOffset;
    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 += payloadOffset;
    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 += payloadOffset;
    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 += payloadOffset;
    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 += payloadOffset;
    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 += payloadOffset;
    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 += payloadOffset;
    if (index+7 >= boxedSize()){
      if (!reserve(index, 0, 8)){return;}
    }
///\todo Fix 64 bit conversion
//    *((int*)(data[index])) =   htonl((int)(newData>>32));
//    *((int*)(data[index+4])) = htonl((int)newData);
    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 += payloadOffset;
    if (index+7 >= boxedSize()){
      if (!reserve(index, 0, 8)){return 0;}
    }
    Int64 result = ntohl( ((int*)(data+index))[0] );
    result <<= 32;
    result += ntohl( ((int*)(data+index))[1] );
    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 += payloadOffset;
    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 += payloadOffset;
    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 += payloadOffset;
    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, if any
    if (boxedSize() - (position+current) > 0){
      memmove(data+position+wanted, data+position+current, boxedSize() - (position+current));
    }
    //calculate and set new size
    if (payloadOffset != 16) {
      int newSize = boxedSize() + (wanted-current);
      ((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-1) - getServerEntryCount();
        setInt8(no+1, 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-1) - getQualityEntryCount();
        setInt8(no+1, 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 tempLoc = 29 + getStringLen(29)+1 + 1;
    for (int i = 0; i< getServerEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    tempLoc++;
    for (int i = 0; i< getQualityEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    setString(newDrm, tempLoc);
  }
  
  char* ABST::getDrmData() {
    long tempLoc = 29 + getStringLen(29)+1 + 1;
    for (int i = 0; i< getServerEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    tempLoc++;
    for (int i = 0; i< getQualityEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    return getString(tempLoc);
  }

  void ABST::setMetaData( std::string newMetaData ) {
    long tempLoc = 29 + getStringLen(29)+1 + 1;
    for (int i = 0; i< getServerEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    tempLoc++;
    for (int i = 0; i< getQualityEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    tempLoc += getStringLen(tempLoc)+1;
    setString(newMetaData, tempLoc);
  }
  
  char* ABST::getMetaData() {
    long tempLoc = 29 + getStringLen(29)+1 + 1;
    for (int i = 0; i< getServerEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    tempLoc++;
    for (int i = 0; i< getQualityEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    tempLoc += getStringLen(tempLoc)+1;
    return getString(tempLoc);
  }

  long ABST::getSegmentRunTableCount(){
    long tempLoc = 29 + getStringLen(29)+1 + 1;
    for (int i = 0; i< getServerEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    tempLoc++;
    for (int i = 0; i< getQualityEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    tempLoc+=getStringLen(tempLoc)+1;//DrmData
    tempLoc+=getStringLen(tempLoc)+1;//MetaData
    return getInt8(tempLoc);
  }
  
  void ABST::setSegmentRunTable( ASRT newSegment, long no ) {
    long tempLoc = 29 + getStringLen(29)+1 + 1;
    for (int i = 0; i< getServerEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    tempLoc++;
    for (int i = 0; i< getQualityEntryCount(); i++){tempLoc += getStringLen(tempLoc)+1;}
    tempLoc+=getStringLen(tempLoc)+1;//DrmData
    tempLoc+=getStringLen(tempLoc)+1;//MetaData
    int countLoc = tempLoc;
    tempLoc++;//skip segmentRuntableCount
    for (int i = 0; i < no; i++){
      if (i < getSegmentRunTableCount()){
        
////Rewritten Tot Hier        
        
        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;
      }
    }
    Box 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;
      }
    }
    Box 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 );
    setInt8(0,9);
    setInt32(0,10);
  }
  
  void AFRT::setVersion(char newVersion){setInt8(newVersion, 0);}
  
  long AFRT::getVersion(){return getInt8(0);}
  
  void AFRT::setUpdate(long newUpdate){setInt24(newUpdate, 1);}
  
  long AFRT::getUpdate(){return getInt24(1);}
  
  void AFRT::setTimeScale(long newScale){setInt32(newScale, 4);}
  
  long AFRT::getTimeScale(){return getInt32(4);}
  
  long AFRT::getQualityEntryCount(){return getInt8(8);}
  
  void AFRT::setQualityEntry(std::string & newEntry, long no){
    int countLoc = 8;
    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* AFRT::getQualityEntry(long no){
    if (no > getQualityEntryCount()){return "";}
    int tempLoc = 9;//position of first quality entry
    for (int i = 0; i < no; i++){tempLoc += getStringLen(tempLoc)+1;}
    return getString(tempLoc);
  }
  
  long AFRT::getFragmentRunCount(){
    int tempLoc = 9;
    for( int i = 0; i < getQualityEntryCount(); i++ ){
      tempLoc += getStringLen(tempLoc)+1;
    }
    return getInt32(tempLoc);
  }
  
  void AFRT::setFragmentRun( afrt_runtable newRun, long no ) {
    int tempLoc = 9;
    for( int i = 0; i < getQualityEntryCount(); i++ ){
      tempLoc += getStringLen(tempLoc)+1;
    }
    int countLoc = tempLoc;
    tempLoc += 4;
    for (int i = 0; i < no; i++){
      if (i < getFragmentRunCount()){
        tempLoc += 17;
      } else {
        if(!reserve(tempLoc, 0, 17 * (no - getQualityEntryCount()))){return;};
        memset(data+tempLoc, 0, 17 * (no - getQualityEntryCount()));
        tempLoc += 17 * ((no-1) - getQualityEntryCount());
        setInt32((no+1), countLoc);//set new qualityEntryCount
        break;
      }
    }
    setInt32(newRun.firstFragment,tempLoc);
    setInt64(newRun.firstTimestamp,tempLoc+4);
    setInt32(newRun.duration,tempLoc+12);
    setInt8(newRun.discontinuity,tempLoc+16);
  }
  
  afrt_runtable AFRT::getFragmentRun( long no ) {
    afrt_runtable res;
    if( no > getFragmentRunCount() ){return res;}
    int tempLoc = 9;
    for( int i = 0; i < getQualityEntryCount(); i++ ){
      tempLoc += getStringLen(tempLoc)+1;
    }
    int countLoc = tempLoc;
    tempLoc += 4;
    for (int i = 0; i < no; i++){
      if (getInt32(tempLoc+12) == 0 ) { tempLoc++;} 
      tempLoc += 16;
    }
    res.firstFragment = getInt32(tempLoc);
    res.firstTimestamp = getInt64(tempLoc+4);
    res.duration = getInt32(tempLoc+12);
    if( res.duration ) {
      res.discontinuity = getInt8(tempLoc+16);
    } else {
      res.discontinuity = 0;
    }
    return res;
  }
  
  std::string AFRT::toPrettyString(int indent){
    std::stringstream r;
    r << std::string(indent, ' ') << "[afrt] Fragment Run Table" << 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, ' ') << "QualitySegmentUrlModifiers (" << getQualityEntryCount() << ")" << std::endl;
    for( int i = 0; i < getQualityEntryCount(); i++ ) {
      r << std::string(indent+2, ' ') << getQualityEntry(i) << std::endl;
    }
    r << std::string(indent+1, ' ') << "FragmentRunEntryTable (" << getFragmentRunCount() << ")" << std::endl;
    for( int i = 0; i < getFragmentRunCount(); i ++ ) {
      afrt_runtable myRun = getFragmentRun(i);
      r << std::string(indent+2, ' ') << "First Fragment " << myRun.firstFragment << std::endl;
      r << std::string(indent+2, ' ') << "First Timestamp " << myRun.firstTimestamp << std::endl;
      r << std::string(indent+2, ' ') << "Duration " << myRun.duration << std::endl;
      r << std::string(indent+2, ' ') << "Discontinuity " << myRun.discontinuity << std::endl;
    }
    return r.str();
  }
  
  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 < getQualityEntryCount(); 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 - getSegmentRunEntryCount())*8)){return;};
        memset(data+tempLoc, 0, (no - getSegmentRunEntryCount())*8);
        tempLoc += (no - getSegmentRunEntryCount())*8;
        setInt32(no, countLoc);//set new qualityEntryCount
        break;
      }
    }
    setInt32(firstSegment,tempLoc);
    setInt32(fragmentsPerSegment,tempLoc+4);
  }
  
  asrt_runtable ASRT::getSegmentRun( long no ) {
    asrt_runtable res;
    if( no > getSegmentRunEntryCount() ) { return res; }
    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;}
    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(){
    memcpy(data + 4, "mfhd", 4);
    setInt32(0,0);
  }
  
  void MFHD::setSequenceNumber(long newSequenceNumber){setInt32(newSequenceNumber, 4);}
  
  long MFHD::getSequenceNumber(){return getInt32(4);}
  
  std::string MFHD::toPrettyString( int indent ) {
    std::stringstream r;
    r << std::string(indent, ' ') << "[mfhd] Movie Fragment Header" << std::endl;
    r << std::string(indent+1, ' ') << "SequenceNumber " << getSequenceNumber() << std::endl;
    return r.str();
  }
  
  MOOF::MOOF(){
    memcpy(data + 4, "moof", 4);
  }
  
  long MOOF::getContentCount() {
    int res = 0;
    int tempLoc = 0;
    while( tempLoc < boxedSize()-8 ){
      res ++;
      tempLoc += Box(data+8+tempLoc, false).boxedSize();
    }
    return res;
  }
  
  void MOOF::setContent( Box newContent, long no ) {
    int tempLoc = 0;
    int contentCount = getContentCount();
    for (int i = 0; i < no; i++){
      if (i < contentCount){
        tempLoc += Box(data+8+tempLoc,false).boxedSize();
      } else {
        if(!reserve(tempLoc, 0, (no - contentCount)*8)){return;};
        memset(data+tempLoc, 0, (no - contentCount)*8);
        tempLoc += (no - contentCount)*8;
        break;
      }
    }
    Box oldContent = Box( data+8+tempLoc, false );
    if( !reserve( tempLoc, oldContent.boxedSize(), newContent.boxedSize() ) ) { return; }
    memcpy( data+8+tempLoc, newContent.asBox(), newContent.boxedSize() );
  }
  
  Box MOOF::getContent( long no ){
    if( no > getContentCount() ) { return Box(); }
    int i = 0;
    int tempLoc = 0;
    while( i < no ) {
      tempLoc += Box( data+8+tempLoc, false).boxedSize();
      i++;
    }
    return Box(data+8+tempLoc, false);
  }
  
  std::string MOOF::toPrettyString( int indent ) {
    std::stringstream r;
    r << std::string(indent, ' ') << "[moof] Movie Fragment Box" << std::endl;
    Box curBox;
    int tempLoc = 0;
    int contentCount = getContentCount();
    for( int i = 0; i < contentCount; i++ ) {
      curBox = getContent(i);
      r << curBox.toPrettyString(indent+1);
      tempLoc += curBox.boxedSize();
    }
    return r.str();
  }
  
  TRAF::TRAF(){
    memcpy(data + 4, "traf", 4);
  }

  long TRAF::getContentCount() {
    int res = 0;
    int tempLoc = 0;
    while( tempLoc < boxedSize()-8 ){
      res ++;
      tempLoc += Box(data+8+tempLoc, false).boxedSize();
    }
    return res;
  }
  
  void TRAF::setContent( Box newContent, long no ) {
    int tempLoc = 0;
    int contentCount = getContentCount();
    for (int i = 0; i < no; i++){
      if (i < contentCount){
        tempLoc += Box(data+8+tempLoc,false).boxedSize();
      } else {
        if(!reserve(tempLoc, 0, (no - contentCount)*8)){return;};
        memset(data+tempLoc, 0, (no - contentCount)*8);
        tempLoc += (no - contentCount)*8;
        break;
      }
    }
    Box oldContent = Box( data+8+tempLoc, false );
    if( !reserve( tempLoc, oldContent.boxedSize(), newContent.boxedSize() ) ) { return; }
    memcpy( data+8+tempLoc, newContent.asBox(), newContent.boxedSize() );
  }
  
  Box TRAF::getContent( long no ){
    if( no > getContentCount() ) { return Box(); }
    int i = 0;
    int tempLoc = 0;
    while( i < no ) {
      tempLoc += Box( data+8+tempLoc, false).boxedSize();
      i++;
    }
    return Box(data+8+tempLoc, false);
  }
  
  std::string TRAF::toPrettyString( int indent ) {
    std::stringstream r;
    r << std::string(indent, ' ') << "[traf] Track Fragment Box" << std::endl;
    Box curBox;
    int tempLoc = 0;
    int contentCount = getContentCount();
    for( int i = 0; i < contentCount; i++ ) {
      curBox = getContent(i);
      r << curBox.toPrettyString(indent+1);
      tempLoc += curBox.boxedSize();
    }
    return r.str();
  }
  
  

  
  TRUN::TRUN(){
    memcpy(data + 4, "trun", 4);
  }

  void TRUN::setFlags(long newFlags){
    setInt24(newFlags,1);
  }

  long TRUN::getFlags(){
    return getInt24(1);
  }

  void TRUN::setDataOffset(long newOffset){
    if (getFlags() & trundataOffset){
      setInt32(newOffset, 8);
    }
  }

  long TRUN::getDataOffset(){
    if (getFlags() & trundataOffset){
      return getInt32(8);
    }else{
      return 0;
    }
  }

  void TRUN::setFirstSampleFlags(long newSampleFlags){
    if (!(getFlags() & trunfirstSampleFlags)){return;}
    if (getFlags() & trundataOffset){
      setInt32(newSampleFlags, 12);
    }else{
      setInt32(newSampleFlags, 8);
    }
  }

  long TRUN::getFirstSampleFlags(){
    if (!(getFlags() & trunfirstSampleFlags)){return 0;}
    if (getFlags() & trundataOffset){
      return getInt32(12);
    }else{
      return getInt32(8);
    }
  }

  long TRUN::getSampleInformationCount(){
    return getInt32(4);
  }

  void TRUN::setSampleInformation(trunSampleInformation newSample, long no){
    long flags = getFlags();
    long sampInfoSize = 0;
    if (flags & trunsampleDuration){sampInfoSize += 4;}
    if (flags & trunsampleSize){sampInfoSize += 4;}
    if (flags & trunsampleFlags){sampInfoSize += 4;}
    if (flags & trunsampleOffsets){sampInfoSize += 4;}
    long offset = 8;
    if (flags & trundataOffset){offset += 4;}
    if (flags & trunfirstSampleFlags){offset += 4;}
    long innerOffset = 0;
    if (flags & trunsampleDuration){
      setInt32(newSample.sampleDuration, offset + no*sampInfoSize + innerOffset);
      innerOffset += 4;
    }
    if (flags & trunsampleSize){
      setInt32(newSample.sampleSize, offset + no*sampInfoSize + innerOffset);
      innerOffset += 4;
    }
    if (flags & trunsampleFlags){
      setInt32(newSample.sampleFlags, offset + no*sampInfoSize + innerOffset);
      innerOffset += 4;
    }
    if (flags & trunsampleOffsets){
      setInt32(newSample.sampleOffset, offset + no*sampInfoSize + innerOffset);
      innerOffset += 4;
    }
    if (getSampleInformationCount() < no+1){
      setInt32(no+1,4);
    }
  }

  trunSampleInformation TRUN::getSampleInformation(long no){
    trunSampleInformation ret;
    ret.sampleDuration = 0;
    ret.sampleSize = 0;
    ret.sampleFlags = 0;
    ret.sampleOffset = 0;
    if (getSampleInformationCount() < no+1){return ret;}
    long flags = getFlags();
    long sampInfoSize = 0;
    if (flags & trunsampleDuration){sampInfoSize += 4;}
    if (flags & trunsampleSize){sampInfoSize += 4;}
    if (flags & trunsampleFlags){sampInfoSize += 4;}
    if (flags & trunsampleOffsets){sampInfoSize += 4;}
    long offset = 8;
    if (flags & trundataOffset){offset += 4;}
    if (flags & trunfirstSampleFlags){offset += 4;}
    long innerOffset = 0;
    if (flags & trunsampleDuration){
      ret.sampleDuration = getInt32(offset + no*sampInfoSize + innerOffset);
      innerOffset += 4;
    }
    if (flags & trunsampleSize){
      ret.sampleSize = getInt32(offset + no*sampInfoSize + innerOffset);
      innerOffset += 4;
    }
    if (flags & trunsampleFlags){
      ret.sampleFlags = getInt32(offset + no*sampInfoSize + innerOffset);
      innerOffset += 4;
    }
    if (flags & trunsampleOffsets){
      ret.sampleOffset = getInt32(offset + no*sampInfoSize + innerOffset);
      innerOffset += 4;
    }
    return ret;
  }

  std::string TRUN::toPrettyString(long indent){
    std::stringstream r;
    r << std::string(indent, ' ') << "[trun] Track Fragment Run" << std::endl;
    r << std::string(indent+1, ' ') << "Version " << getInt8(0) << std::endl;
    
    long flags = getFlags();
    r << std::string(indent+1, ' ') << "Flags";
    if (flags & trundataOffset){r << " dataOffset";}
    if (flags & trunfirstSampleFlags){r << " firstSampleFlags";}
    if (flags & trunsampleDuration){r << " sampleDuration";}
    if (flags & trunsampleSize){r << " sampleSize";}
    if (flags & trunsampleFlags){r << " sampleFlags";}
    if (flags & trunsampleOffsets){r << " sampleOffsets";}
    r << std::endl;
    
    if (flags & trundataOffset){r << std::string(indent+1, ' ') << "Data Offset " << getDataOffset() << std::endl;}
    if (flags & trundataOffset){r << std::string(indent+1, ' ') << "Sample Flags" << prettySampleFlags(getFirstSampleFlags()) << std::endl;}

    r << std::string(indent+1, ' ') << "SampleInformation (" << getSampleInformationCount() << "):" << std::endl;
    for (int i = 0; i < getSampleInformationCount(); ++i){
      r << std::string(indent+2, ' ') << "[" << i << "]" << std::endl;
      trunSampleInformation samp = getSampleInformation(i);
      if (flags & trunsampleDuration){
        r << std::string(indent+2, ' ') << "Duration " << samp.sampleDuration << std::endl;
      }
      if (flags & trunsampleSize){
        r << std::string(indent+2, ' ') << "Size " << samp.sampleSize << std::endl;
      }
      if (flags & trunsampleFlags){
        r << std::string(indent+2, ' ') << "Flags " << prettySampleFlags(samp.sampleFlags) << std::endl;
      }
      if (flags & trunsampleOffsets){
        r << std::string(indent+2, ' ') << "Offset " << samp.sampleOffset << std::endl;
      }
    }

    return r.str();
  }

  std::string prettySampleFlags(long flag){
    std::stringstream r;
    if (flag & noIPicture){r << " noIPicture";}
    if (flag & isIPicture){r << " isIPicture";}
    if (flag & noDisposable){r << " noDisposable";}
    if (flag & isDisposable){r << " isDisposable";}
    if (flag & isRedundant){r << " isRedundant";}
    if (flag & noRedundant){r << " noRedundant";}
    if (flag & noKeySample){r << " noKeySample";}else{r << " isKeySample";}
    return r.str();
  }

  TFHD::TFHD(){
    memcpy(data + 4, "tfhd", 4);
  }

  void TFHD::setFlags(long newFlags){
    setInt24(newFlags,1);
  }

  long TFHD::getFlags(){
    return getInt24(1);
  }

  void TFHD::setTrackID(long newID){
    setInt32(newID,4);
  }

  long TFHD::getTrackID(){
    return getInt32(4);
  }

  void TFHD::setBaseDataOffset(long long newOffset){
    if (getFlags() & tfhdBaseOffset){
      setInt64(newOffset, 8);
    }
  }
  
  long long TFHD::getBaseDataOffset(){
    if (getFlags() & tfhdBaseOffset){
      return getInt64(8);
    }else{
      return 0;
    }
  }
  
  void TFHD::setSampleDescriptionIndex(long newIndex){
    if (!(getFlags() & tfhdSampleDesc)){return;}
    int offset = 8;
    if (getFlags() & tfhdBaseOffset){offset += 8;}
    setInt32(newIndex, offset);
  }
  
  long TFHD::getSampleDescriptionIndex(){
    if (!(getFlags() & tfhdSampleDesc)){return 0;}
    int offset = 8;
    if (getFlags() & tfhdBaseOffset){offset += 8;}
    return getInt32(offset);
  }
  
  void TFHD::setDefaultSampleDuration(long newDuration){
    if (!(getFlags() & tfhdSampleDura)){return;}
    int offset = 8;
    if (getFlags() & tfhdBaseOffset){offset += 8;}
    if (getFlags() & tfhdSampleDesc){offset += 4;}
    setInt32(newDuration, offset);
  }
  
  long TFHD::getDefaultSampleDuration(){
    if (!(getFlags() & tfhdSampleDura)){return 0;}
    int offset = 8;
    if (getFlags() & tfhdBaseOffset){offset += 8;}
    if (getFlags() & tfhdSampleDesc){offset += 4;}
    return getInt32(offset);
  }
  
  void TFHD::setDefaultSampleSize(long newSize){
    if (!(getFlags() & tfhdSampleSize)){return;}
    int offset = 8;
    if (getFlags() & tfhdBaseOffset){offset += 8;}
    if (getFlags() & tfhdSampleDesc){offset += 4;}
    if (getFlags() & tfhdSampleDura){offset += 4;}
    setInt32(newSize, offset);
  }
  
  long TFHD::getDefaultSampleSize(){
    if (!(getFlags() & tfhdSampleSize)){return 0;}
    int offset = 8;
    if (getFlags() & tfhdBaseOffset){offset += 8;}
    if (getFlags() & tfhdSampleDesc){offset += 4;}
    if (getFlags() & tfhdSampleDura){offset += 4;}
    return getInt32(offset);
  }
  
  void TFHD::setDefaultSampleFlags(long newFlags){
    if (!(getFlags() & tfhdSampleFlag)){return;}
    int offset = 8;
    if (getFlags() & tfhdBaseOffset){offset += 8;}
    if (getFlags() & tfhdSampleDesc){offset += 4;}
    if (getFlags() & tfhdSampleDura){offset += 4;}
    if (getFlags() & tfhdSampleSize){offset += 4;}
    setInt32(newFlags, offset);
  }
  
  long TFHD::getDefaultSampleFlags(){
    if (!(getFlags() & tfhdSampleFlag)){return 0;}
    int offset = 8;
    if (getFlags() & tfhdBaseOffset){offset += 8;}
    if (getFlags() & tfhdSampleDesc){offset += 4;}
    if (getFlags() & tfhdSampleDura){offset += 4;}
    if (getFlags() & tfhdSampleSize){offset += 4;}
    return getInt32(offset);
  }
  
  std::string TFHD::toPrettyString(long indent){
    std::stringstream r;
    r << std::string(indent, ' ') << "[tfhd] Track Fragment Header" << std::endl;
    r << std::string(indent+1, ' ') << "Version " << getInt8(0) << std::endl;
    
    long flags = getFlags();
    r << std::string(indent+1, ' ') << "Flags";
    if (flags & tfhdBaseOffset){r << " BaseOffset";}
    if (flags & tfhdSampleDesc){r << " SampleDesc";}
    if (flags & tfhdSampleDura){r << " SampleDura";}
    if (flags & tfhdSampleSize){r << " SampleSize";}
    if (flags & tfhdSampleFlag){r << " SampleFlag";}
    if (flags & tfhdNoDuration){r << " NoDuration";}
    r << std::endl;
    
    r << std::string(indent+1, ' ') << "TrackID " << getTrackID() << std::endl;

    if (flags & tfhdBaseOffset){r << std::string(indent+1, ' ') << "Base Offset " << getBaseDataOffset() << std::endl;}
    if (flags & tfhdSampleDesc){r << std::string(indent+1, ' ') << "Sample Description Index " << getSampleDescriptionIndex() << std::endl;}
    if (flags & tfhdSampleDura){r << std::string(indent+1, ' ') << "Default Sample Duration " << getDefaultSampleDuration() << std::endl;}
    if (flags & tfhdSampleSize){r << std::string(indent+1, ' ') << "Default Same Size " << getDefaultSampleSize() << std::endl;}
    if (flags & tfhdSampleFlag){r << std::string(indent+1, ' ') << "Default Sample Flags " << prettySampleFlags(getDefaultSampleFlags()) << std::endl;}
    
    return r.str();
  }

  AFRA::AFRA(){
    memcpy(data + 4, "afra", 4);
    setInt32(0, 9);//entrycount = 0
    setFlags(0);
  }
  
  void AFRA::setVersion(long newVersion){
    setInt8(newVersion, 0);
  }
  
  long AFRA::getVersion(){
    return getInt8(0);
  }
  
  void AFRA::setFlags(long newFlags){
    setInt24(newFlags, 1);
  }
  
  long AFRA::getFlags(){
    return getInt24(1);
  }
  
  void AFRA::setLongIDs(bool newVal){
    if (newVal){
      setInt8((getInt8(4) & 0x7F) + 0x80, 4);
    }else{
      setInt8((getInt8(4) & 0x7F), 4);
    }
  }
  
  bool AFRA::getLongIDs(){
    return getInt8(4) & 0x80;
  }

  void AFRA::setLongOffsets(bool newVal){
    if (newVal){
      setInt8((getInt8(4) & 0xBF) + 0x40, 4);
    }else{
      setInt8((getInt8(4) & 0xBF), 4);
    }
  }
  
  bool AFRA::getLongOffsets(){
    return getInt8(4) & 0x40;
  }
  
  void AFRA::setGlobalEntries(bool newVal){
    if (newVal){
      setInt8((getInt8(4) & 0xDF) + 0x20, 4);
    }else{
      setInt8((getInt8(4) & 0xDF), 4);
    }
  }
  
  bool AFRA::getGlobalEntries(){
    return getInt8(4) & 0x20;
  }
  
  void AFRA::setTimeScale(long newVal){
    setInt32(newVal, 5);
  }
  
  long AFRA::getTimeScale(){
    return getInt32(5);
  }
  
  long AFRA::getEntryCount(){
    return getInt32(9);
  }
  
  void AFRA::setEntry(afraentry newEntry, long no){
    int entrysize = 12;
    if (getLongOffsets()){entrysize = 16;}
    setInt64(newEntry.time, 13+entrysize*no);
    if (getLongOffsets()){
      setInt64(newEntry.offset, 21+entrysize*no);
    }else{
      setInt32(newEntry.offset, 21+entrysize*no);
    }
    if (no+1 > getEntryCount()){setInt32(no+1, 9);}
  }
  
  afraentry AFRA::getEntry(long no){
    afraentry ret;
    int entrysize = 12;
    if (getLongOffsets()){entrysize = 16;}
    ret.time = getInt64(13+entrysize*no);
    if (getLongOffsets()){
      ret.offset = getInt64(21+entrysize*no);
    }else{
      ret.offset = getInt32(21+entrysize*no);
    }
    return ret;
  }
  
  long AFRA::getGlobalEntryCount(){
    if (!getGlobalEntries()){return 0;}
    int entrysize = 12;
    if (getLongOffsets()){entrysize = 16;}
    return getInt32(13+entrysize*getEntryCount());
  }

  void AFRA::setGlobalEntry(globalafraentry newEntry, long no){
    int offset = 13+12*getEntryCount()+4;
    if (getLongOffsets()){offset = 13+16*getEntryCount()+4;}
    int entrysize = 20;
    if (getLongIDs()){entrysize += 4;}
    if (getLongOffsets()){entrysize += 8;}
    
    setInt64(newEntry.time, offset+entrysize*no);
    if (getLongIDs()){
      setInt32(newEntry.segment, offset+entrysize*no+8);
      setInt32(newEntry.fragment, offset+entrysize*no+12);
    }else{
      setInt16(newEntry.segment, offset+entrysize*no+8);
      setInt16(newEntry.fragment, offset+entrysize*no+10);
    }
    if (getLongOffsets()){
      setInt64(newEntry.afraoffset, offset+entrysize*no+entrysize-16);
      setInt64(newEntry.offsetfromafra, offset+entrysize*no+entrysize-8);
    }else{
      setInt32(newEntry.afraoffset, offset+entrysize*no+entrysize-8);
      setInt32(newEntry.offsetfromafra, offset+entrysize*no+entrysize-4);
    }
    
    if (getInt32(offset-4) < no+1){setInt32(no+1, offset-4);}
  }

  globalafraentry AFRA::getGlobalEntry(long no){
    globalafraentry ret;
    int offset = 13+12*getEntryCount()+4;
    if (getLongOffsets()){offset = 13+16*getEntryCount()+4;}
    int entrysize = 20;
    if (getLongIDs()){entrysize += 4;}
    if (getLongOffsets()){entrysize += 8;}
    
    ret.time = getInt64(offset+entrysize*no);
    if (getLongIDs()){
      ret.segment = getInt32(offset+entrysize*no+8);
      ret.fragment = getInt32(offset+entrysize*no+12);
    }else{
      ret.segment = getInt16(offset+entrysize*no+8);
      ret.fragment = getInt16(offset+entrysize*no+10);
    }
    if (getLongOffsets()){
      ret.afraoffset = getInt64(offset+entrysize*no+entrysize-16);
      ret.offsetfromafra = getInt64(offset+entrysize*no+entrysize-8);
    }else{
      ret.afraoffset = getInt32(offset+entrysize*no+entrysize-8);
      ret.offsetfromafra = getInt32(offset+entrysize*no+entrysize-4);
    }
    return ret;
  }

  std::string AFRA::toPrettyString(long indent){
    std::stringstream r;
    r << std::string(indent, ' ') << "[afra] Fragment Random Access" << std::endl;
    r << std::string(indent+1, ' ') << "Version " << getVersion() << std::endl;
    r << std::string(indent+1, ' ') << "Flags " << getFlags() << std::endl;
    r << std::string(indent+1, ' ') << "Long IDs " << getLongIDs() << std::endl;
    r << std::string(indent+1, ' ') << "Long Offsets " << getLongOffsets() << std::endl;
    r << std::string(indent+1, ' ') << "Global Entries " << getGlobalEntries() << std::endl;
    r << std::string(indent+1, ' ') << "TimeScale " << getTimeScale() << std::endl;

    long count = getEntryCount();
    r << std::string(indent+1, ' ') << "Entries (" << count << ") " << std::endl;
    for (long i = 0; i < count; ++i){
      afraentry tmpent = getEntry(i);
      r << std::string(indent+1, ' ') << i << ": Time " << tmpent.time << ", Offset " << tmpent.offset << std::endl;
    }

    if (getGlobalEntries()){
      count = getGlobalEntryCount();
      r << std::string(indent+1, ' ') << "Global Entries (" << count << ") " << std::endl;
      for (long i = 0; i < count; ++i){
        globalafraentry tmpent = getGlobalEntry(i);
        r << std::string(indent+1, ' ') << i << ": T " << tmpent.time << ", S" << tmpent.segment << "F" << tmpent.fragment << ", " << tmpent.afraoffset << "/" << tmpent.offsetfromafra << std::endl;
      }
    }
    
    return r.str();
  }


};