Updates to newer new style of newness.
This commit is contained in:
Thulinma
parent
50dd32301d
commit
27f2ea931d
2 changed files with 267 additions and 139 deletions
305
lib/mp4.cpp
305
lib/mp4.cpp
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@ -7,39 +7,50 @@
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/// Contains all MP4 format related code.
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namespace MP4{
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Box::Box(size_t size) {
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isUpdated = false;
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data.resize( size + 8 );
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}
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Box::Box( const char* BoxType, size_t size ) {
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isUpdated = false;
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data.resize( size + 8 );
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memcpy( (char*)data.c_str() + 4, BoxType, 4 );
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}
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Box::Box( std::string & newData ) {
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isUpdated = false;
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if( !read( newData ) ) {
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/// Creates a new box, optionally using the indicated pointer for storage.
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/// If manage is set to true, the pointer will be realloc'ed when the box needs to be resized.
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/// If the datapointer is NULL, manage is assumed to be true even if explicitly given as false.
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/// If managed, the pointer will be free'd upon destruction.
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Box::Box(char * datapointer, bool manage){
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data = datapointer;
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managed = manage;
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if (data == 0){
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clear();
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}else{
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data_size = ntohl(((int*)data)[0]);
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}
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}
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Box::~Box() { }
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/// If managed, this will free the data pointer.
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Box::~Box(){
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if (managed && data != 0){
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free(data);
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data = 0;
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}
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}
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/// Returns the values at byte positions 4 through 7.
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std::string Box::getType() {
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return data.substr(4,4);
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return std::string(data+4,4);
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}
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/// Returns true if the given 4-byte boxtype is equal to the values at byte positions 4 through 7.
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bool Box::isType( char* boxType ) {
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return !memcmp( boxType, data.c_str() + 4, 4 );
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return !memcmp(boxType, data + 4, 4);
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}
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/// Reads out a whole box (if possible) from newData, copying to the internal data storage and removing from the input string.
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/// \returns True on success, false otherwise.
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bool Box::read(std::string & newData){
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if (!managed){return false;}
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if (newData.size() > 4){
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size_t size = ntohl( ((int*)newData.c_str())[0] );
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if( newData.size() > size ) {
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data = newData.substr( 0, size );
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if (newData.size() >= size){
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void * ret = malloc(size);
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if (!ret){return false;}
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free(data);
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data = ret;
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memcpy(data, newData.c_str(), size);
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newData.erase( 0, size );
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return true;
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}
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@ -47,26 +58,39 @@ namespace MP4{
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return false;
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}
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/// Returns the total boxed size of this box, including the header.
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size_t Box::boxedSize() {
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return data.size();
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return ntohl(((int*)data)[0]);
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}
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/// Retruns the size of the payload of thix box, excluding the header.
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/// This value is defined as boxedSize() - 8.
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size_t Box::payloadSize() {
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return data.size() - 8;
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return boxedSize() - 8;
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}
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std::string & Box::asBox() {
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if( isUpdated ) {
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regenerate( );
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}
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((int*)data.c_str())[0] = htonl( data.size() );
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/// Returns a copy of the data pointer.
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char * Box::asBox() {
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return data;
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}
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/// Makes this box managed if it wasn't already, resetting the internal storage to 8 bytes (the minimum).
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/// If this box wasn't managed, the original data is left intact - otherwise it is free'd.
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/// If it was somehow impossible to allocate 8 bytes (should never happen), this will cause segfaults later.
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void Box::clear() {
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data.resize( 8 );
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if (data && managed){free(data);}
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managed = true;
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data = malloc(8);
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if (data){
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data_size = 8;
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((int*)data)[0] = htonl(data_size);
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}else{
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data_size = 0;
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}
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}
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/// Attempts to typecast this Box to a more specific type and call the toPrettyString() function of that type.
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/// If this failed, it will print out a message saying pretty-printing is not implemented for <boxtype>.
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std::string Box::toPrettyString(int indent){
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switch( ntohl(((int*)data.c_str())[1]) ) { //type is at this address
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case 0x6D666864: return ((MFHD*)this)->toPrettyString(indent); break;
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@ -78,55 +102,73 @@ namespace MP4{
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}
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}
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/// Sets the 8 bits integer at the given index.
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/// Attempts to resize the data pointer if the index is out of range.
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/// Fails silently if resizing failed.
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void Box::setInt8( char newData, size_t index ) {
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index += 8;
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if( index > data.size() ) {
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data.resize( index );
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if (index >= boxedSize()){
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if (!reserve(index, 0, 1)){return;}
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}
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data[index] = newData;
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}
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/// Gets the 8 bits integer at the given index.
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/// Attempts to resize the data pointer if the index is out of range.
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/// Returns zero if resizing failed.
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char Box::getInt8( size_t index ) {
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index += 8;
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if( index > data.size() ) {
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data.resize( index );
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if (index >= boxedSize()){
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if (!reserve(index, 0, 1)){return 0;}
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}
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return data[index];
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}
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/// Sets the 16 bits integer at the given index.
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/// Attempts to resize the data pointer if the index is out of range.
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/// Fails silently if resizing failed.
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void Box::setInt16( short newData, size_t index ) {
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index += 8;
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if( index + 1 > data.size() ) {
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data.resize( index + 1 );
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if (index+1 >= boxedSize()){
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if (!reserve(index, 0, 2)){return;}
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}
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newData = htons( newData );
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memcpy( (void*)(data.c_str() + index), (void*)&newData, 2 );
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}
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/// Gets the 16 bits integer at the given index.
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/// Attempts to resize the data pointer if the index is out of range.
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/// Returns zero if resizing failed.
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short Box::getInt16( size_t index ) {
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index += 8;
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if( index + 1 > data.size() ) {
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data.resize( index + 1 );
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if (index+1 >= boxedSize()){
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if (!reserve(index, 0, 2)){return 0;}
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}
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short result;
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memcpy( (void*)&result, (void*)(data.c_str() + index), 2 );
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return ntohs(result);
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}
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/// Sets the 24 bits integer at the given index.
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/// Attempts to resize the data pointer if the index is out of range.
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/// Fails silently if resizing failed.
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void Box::setInt24( long newData, size_t index ) {
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index += 8;
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if( index + 2 > data.size() ) {
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data.resize( index + 2 );
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if (index+2 >= boxedSize()){
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if (!reserve(index, 0, 3)){return;}
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}
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data[index] = (newData & 0x00FF0000) >> 16;
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data[index+1] = (newData & 0x0000FF00) >> 8;
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data[index+2] = (newData & 0x000000FF);
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}
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/// Gets the 24 bits integer at the given index.
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/// Attempts to resize the data pointer if the index is out of range.
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/// Returns zero if resizing failed.
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long Box::getInt24( size_t index ) {
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index += 8;
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if( index + 2 > data.size() ) {
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data.resize( index + 2 );
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if (index+2 >= boxedSize()){
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if (!reserve(index, 0, 3)){return 0;}
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}
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long result = data[index];
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result <<= 8;
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@ -136,79 +178,144 @@ namespace MP4{
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return result;
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}
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/// Sets the 32 bits integer at the given index.
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/// Attempts to resize the data pointer if the index is out of range.
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/// Fails silently if resizing failed.
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void Box::setInt32( long newData, size_t index ) {
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index += 8;
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if( index + 3 > data.size() ) {
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data.resize( index + 3 );
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if (index+3 >= boxedSize()){
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if (!reserve(index, 0, 4)){return;}
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}
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newData = htonl( newData );
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memcpy( (char*)data.c_str() + index, (char*)&newData, 4 );
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}
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/// Gets the 32 bits integer at the given index.
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/// Attempts to resize the data pointer if the index is out of range.
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/// Returns zero if resizing failed.
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long Box::getInt32( size_t index ) {
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index += 8;
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if( index + 3 > data.size() ) {
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data.resize( index + 3 );
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if (index+3 >= boxedSize()){
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if (!reserve(index, 0, 4)){return 0;}
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}
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long result;
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memcpy( (char*)&result, (char*)data.c_str() + index, 4 );
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return ntohl(result);
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}
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/// Sets the 64 bits integer at the given index.
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/// Attempts to resize the data pointer if the index is out of range.
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/// Fails silently if resizing failed.
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void Box::setInt64( long long int newData, size_t index ) {
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index += 8;
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if( index + 7 > data.size() ) {
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data.resize( index + 7 );
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if (index+7 >= boxedSize()){
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if (!reserve(index, 0, 8)){return;}
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}
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data[index] = ( newData * 0xFF00000000000000 ) >> 56;
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data[index+1] = ( newData * 0x00FF000000000000 ) >> 48;
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data[index+2] = ( newData * 0x0000FF0000000000 ) >> 40;
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data[index+3] = ( newData * 0x000000FF00000000 ) >> 32;
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data[index+4] = ( newData * 0x00000000FF000000 ) >> 24;
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data[index+5] = ( newData * 0x0000000000FF0000 ) >> 16;
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data[index+6] = ( newData * 0x000000000000FF00 ) >> 8;
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data[index+7] = ( newData * 0x00000000000000FF );
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data[index] = ( newData & 0xFF00000000000000 ) >> 56;
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data[index+1] = ( newData & 0x00FF000000000000 ) >> 48;
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data[index+2] = ( newData & 0x0000FF0000000000 ) >> 40;
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data[index+3] = ( newData & 0x000000FF00000000 ) >> 32;
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data[index+4] = ( newData & 0x00000000FF000000 ) >> 24;
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data[index+5] = ( newData & 0x0000000000FF0000 ) >> 16;
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data[index+6] = ( newData & 0x000000000000FF00 ) >> 8;
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data[index+7] = ( newData & 0x00000000000000FF );
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}
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/// Gets the 64 bits integer at the given index.
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/// Attempts to resize the data pointer if the index is out of range.
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/// Returns zero if resizing failed.
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long long int Box::getInt64( size_t index ) {
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index += 8;
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if( index + 7 > data.size() ) {
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data.resize( index + 7 );
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if (index+7 >= boxedSize()){
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if (!reserve(index, 0, 8)){return 0;}
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}
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long result = data[index];
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result <<= 8;
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result += data[index+1];
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result <<= 8;
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result += data[index+2];
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result <<= 8;
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result += data[index+3];
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result <<= 8;
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result += data[index+4];
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result <<= 8;
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result += data[index+5];
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result <<= 8;
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result += data[index+6];
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result <<= 8;
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result += data[index+7];
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result <<= 8; result += data[index+1];
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result <<= 8; result += data[index+2];
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result <<= 8; result += data[index+3];
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result <<= 8; result += data[index+4];
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result <<= 8; result += data[index+5];
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result <<= 8; result += data[index+6];
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result <<= 8; result += data[index+7];
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return result;
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}
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/// Sets the NULL-terminated string at the given index.
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/// Will attempt to resize if the string doesn't fit.
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/// Fails silently if resizing failed.
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void Box::setString(std::string newData, size_t index ) {
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setString( (char*)newData.c_str(), newData.size(), index );
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}
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/// Sets the NULL-terminated string at the given index.
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/// Will attempt to resize if the string doesn't fit.
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/// Fails silently if resizing failed.
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void Box::setString(char* newData, size_t size, size_t index ) {
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index += 8;
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if( index + size > data.size() ) {
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data.resize( index + size );
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if (index >= boxedSize()){
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if (!reserve(index, 0, 1)){return;}
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data[index] = 0;
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}
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memcpy( (char*)data.c_str() + index, newData, size );
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if (getStringLen(index) != size){
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if (!reserve(index, getStringLen(index)+1, size+1)){return;}
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}
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memcpy(data + index, newData, size+1);
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}
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void Box::regenerate() {
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std::cerr << "Regenerate() not implemented for this box type\n";
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/// Gets the NULL-terminated string at the given index.
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/// Will attempt to resize if the string is out of range.
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/// Returns null if resizing failed.
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char * Box::getString(size_t index){
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index += 8;
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if (index >= boxedSize()){
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if (!reserve(index, 0, 1)){return 0;}
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data[index] = 0;
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}
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return data+index;
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}
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/// Returns the length of the NULL-terminated string at the given index.
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/// Returns 0 if out of range.
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size_t Box::getStringLen(size_t index){
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index += 8;
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if (index >= boxedSize()){return 0;}
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return strlen(data+index);
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}
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/// Attempts to reserve enough space for wanted bytes of data at given position, where current bytes of data is now reserved.
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/// This will move any existing data behind the currently reserved space to the proper location after reserving.
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/// \returns True on success, false otherwise.
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bool reserve(size_t position, size_t current, size_t wanted){
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if (current == wanted){return true;}
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if (current < wanted){
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//make bigger
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if (boxedSize() + (wanted-current) > data_size){
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//realloc if managed, otherwise fail
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if (!managed){return false;}
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void * ret = realloc(data, boxedSize() + (wanted-current));
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if (!ret){return false;}
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data = ret;
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data_size = boxedSize() + (wanted-current);
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}
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//move data behind backward, if any
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if (boxedSize() - (position+current) > 0){
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memmove(position+wanted, position+current, boxedSize() - (position+current));
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}
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//calculate and set new size
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int newSize = boxedSize() + (wanted-current);
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((int*)data)[0] = htonl(newSize);
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return true;
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}else{
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//make smaller
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//move data behind forward, if any
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if (boxedSize() - (position+current) > 0){
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memmove(position+wanted, position+current, boxedSize() - (position+current));
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}
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//calculate and set new size
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int newSize = boxedSize() - (current-wanted);
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((int*)data)[0] = htonl(newSize);
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return true;
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}
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}
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ABST::ABST( ) : Box("abst") {
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@ -239,33 +346,34 @@ namespace MP4{
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}
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void ABST::setProfile( char newProfile ) {
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setInt8( ( getInt8(5) & 0x3F ) + ( ( newProfile & 0x02 ) << 6 ), 5 );
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setInt8((getInt8(8) & 0x3F) + ((newProfile & 0x02) << 6), 8);
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}
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void ABST::setLive( char newLive ) {
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setInt8( ( getInt8(5) & 0xDF ) + ( ( newLive & 0x01 ) << 5 ), 5 );
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setInt8((getInt8(8) & 0xDF) + ((newLive & 0x01) << 5), 8);
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}
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void ABST::setUpdate( char newUpdate ) {
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setInt8( ( getInt8(5) & 0xEF ) + ( ( newUpdate & 0x01 ) << 4 ), 5 );
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setInt8((getInt8(8) & 0xEF) + ((newUpdate & 0x01) << 4), 8);
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}
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void ABST::setTimeScale( long newScale ) {
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setInt32( newScale, 6 );
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setInt32(newScale, 9);
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}
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void ABST::setCurrentMediaTime( long long int newTime ) {
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setInt64( newTime, 10 );
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setInt64( newTime, 13);
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}
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void ABST::setSmpteTimeCodeOffset( long long int newTime ) {
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setInt64( newTime, 18 );
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setInt64( newTime, 21);
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}
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void ABST::setMovieIdentifier( std::string newIdentifier ) {
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movieIdentifier = newIdentifier;
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isUpdated = true;
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}
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void ABST::addServerEntry( std::string newEntry ) {
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@ -323,8 +431,9 @@ namespace MP4{
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}
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void ABST::regenerate( ) {
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data.resize( 26 );
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int myOffset = 26;
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if (!isUpdated){return;}//skip if already up to date
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data.resize(29);
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int myOffset = 29;
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//0-terminated movieIdentifier
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memcpy( (char*)data.c_str() + myOffset, movieIdentifier.c_str(), movieIdentifier.size() + 1);
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myOffset += movieIdentifier.size() + 1;
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@ -370,22 +479,24 @@ namespace MP4{
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}
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std::string ABST::toPrettyString( int indent ) {
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std::string r;
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r += std::string(indent, ' ')+"Bootstrap Info\n";
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regenerate();
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std::stringbuffer r;
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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\n";
|
||||
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;
|
||||
}
|
||||
if( getInt8(5) & 0x20 ) {
|
||||
r += std::string(indent+1, ' ' )+"Live\n";
|
||||
r << std::string(indent+1, ' ' ) << "Live" << std::endl;
|
||||
}else{
|
||||
r += std::string(indent+1, ' ' )+"Recorded\n";
|
||||
r << std::string(indent+1, ' ' ) << "Recorded" << std::endl;
|
||||
}
|
||||
r += std::string(indent+1, ' ')+"Profile "+JSON::Value((long long int)( getInt8(5) & 0xC0 ) ).asString()+"\n";
|
||||
r += std::string(indent+1, ' ')+"Timescale "+JSON::Value((long long int)getInt64(10)).asString()+"\n";
|
||||
r += std::string(indent+1, ' ')+"CurrMediaTime "+JSON::Value((long long int)getInt32(6)).asString()+"\n";
|
||||
r += std::string(indent+1, ' ')+"Segment Run Tables "+JSON::Value((long long int)segmentTables.size()).asString()+"\n";
|
||||
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);
|
||||
}
|
||||
|
|
@ -393,7 +504,7 @@ namespace MP4{
|
|||
for( uint32_t i = 0; i < fragmentTables.size(); i++ ) {
|
||||
r += fragmentTables[i]->toPrettyString(indent+2);
|
||||
}
|
||||
return r;
|
||||
return r.str();
|
||||
}
|
||||
|
||||
AFRT::AFRT() : Box("afrt"){
|
||||
|
|
@ -430,6 +541,7 @@ namespace MP4{
|
|||
}
|
||||
|
||||
void AFRT::regenerate( ) {
|
||||
if (!isUpdated){return;}//skip if already up to date
|
||||
data.resize( 8 );
|
||||
int myOffset = 8;
|
||||
setInt8( qualityModifiers.size(), myOffset );
|
||||
|
|
@ -502,6 +614,7 @@ namespace MP4{
|
|||
}
|
||||
|
||||
void ASRT::regenerate( ) {
|
||||
if (!isUpdated){return;}//skip if already up to date
|
||||
data.resize( 4 );
|
||||
int myOffset = 4;
|
||||
setInt8( qualityModifiers.size(), myOffset );
|
||||
|
|
@ -564,6 +677,7 @@ namespace MP4{
|
|||
}
|
||||
|
||||
void MOOF::regenerate() {
|
||||
if (!isUpdated){return;}//skip if already up to date
|
||||
data.resize( 0 );
|
||||
int myOffset = 0;
|
||||
//retrieve box for each entry
|
||||
|
|
@ -626,6 +740,7 @@ namespace MP4{
|
|||
}
|
||||
|
||||
void TRUN::regenerate( ) {
|
||||
if (!isUpdated){return;}//skip if already up to date
|
||||
data.resize( 4 );
|
||||
int myOffset = 4;
|
||||
setInt32( allSamples.size(), myOffset );
|
||||
|
|
|
|||
61
lib/mp4.h
61
lib/mp4.h
|
|
@ -3,7 +3,6 @@
|
|||
#include <iostream>
|
||||
#include <stdint.h>
|
||||
#include <deque>
|
||||
#include <vector> ///\todo remove this include
|
||||
#include <algorithm>
|
||||
#include "json.h"
|
||||
|
||||
|
|
@ -12,20 +11,18 @@ namespace MP4{
|
|||
|
||||
class Box {
|
||||
public:
|
||||
Box( size_t size = 0);
|
||||
Box( const char* boxType, size_t size = 0 );
|
||||
Box( std::string & newData );
|
||||
Box(char * datapointer = 0, bool manage = true);
|
||||
~Box();
|
||||
std::string getType();
|
||||
bool isType( char* boxType );
|
||||
bool read(std::string & newData);
|
||||
size_t boxedSize();
|
||||
size_t payloadSize();
|
||||
std::string & asBox();
|
||||
void regenerate();
|
||||
char * asBox();
|
||||
void clear();
|
||||
std::string toPrettyString( int indent = 0 );
|
||||
protected:
|
||||
//integer functions
|
||||
void setInt8( char newData, size_t index );
|
||||
char getInt8( size_t index );
|
||||
void setInt16( short newData, size_t index );
|
||||
|
|
@ -36,10 +33,17 @@ namespace MP4{
|
|||
long getInt32( size_t index );
|
||||
void setInt64( long long int newData, size_t index );
|
||||
long long int getInt64( size_t index );
|
||||
//string functions
|
||||
void setString(std::string newData, size_t index );
|
||||
void setString(char* newData, size_t size, size_t index );
|
||||
std::string data;
|
||||
bool isUpdated;
|
||||
char * getString(size_t index);
|
||||
size_t getStringLen(size_t index);
|
||||
//data functions
|
||||
bool reserve(size_t position, size_t current, size_t wanted);
|
||||
//internal variables
|
||||
char * data; ///< Holds the data of this box
|
||||
int data_size; ///< Currently reserved size
|
||||
bool managed; ///< If false, will not attempt to resize/free the data pointer.
|
||||
};//Box Class
|
||||
|
||||
/// ABST Box class
|
||||
|
|
@ -47,33 +51,42 @@ namespace MP4{
|
|||
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);
|
||||
void setMovieIdentifier( std::string newIdentifier );
|
||||
void addServerEntry( std::string newEntry );
|
||||
void delServerEntry( std::string delEntry );
|
||||
void addQualityEntry( std::string newEntry );
|
||||
void delQualityEntry( std::string delEntry );
|
||||
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);
|
||||
void addSegmentRunTable( Box * newSegment );
|
||||
void addFragmentRunTable( Box * newFragment );
|
||||
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);
|
||||
private:
|
||||
void regenerate();
|
||||
std::string movieIdentifier;
|
||||
std::deque<std::string> Servers;
|
||||
std::deque<std::string> Qualities;
|
||||
std::string drmData;
|
||||
std::string metaData;
|
||||
std::deque<Box *> segmentTables;
|
||||
std::deque<Box *> fragmentTables;
|
||||
};//ABST Box
|
||||
|
||||
struct fragmentRun {
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue