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///////////////////////////////////////////////////////////////////////////////
//
// The contents of this file are subject to the Mozilla Public License
// Version 1.1 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at
// http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
// License for the specific language governing rights and limitations
// under the License.
//
// The Original Code is MP4v2.
//
// The Initial Developer of the Original Code is Kona Blend.
// Portions created by Kona Blend are Copyright (C) 2008.
// All Rights Reserved.
//
// Contributors:
// Kona Blend, kona8lend@@gmail.com
//
///////////////////////////////////////////////////////////////////////////////
#include "impl.h"
namespace mp4v2 { namespace impl { namespace qtff {
///////////////////////////////////////////////////////////////////////////////
namespace {
const string BOX_CODE = "pasp";
bool findPictureAspectRatioBox( MP4FileHandle file, MP4Atom& coding, MP4Atom*& pasp );
}
///////////////////////////////////////////////////////////////////////////////
bool
PictureAspectRatioBox::add( MP4FileHandle file, uint16_t trackIndex, const Item& item )
{
MP4Atom* coding;
if( !MP4_IS_VALID_FILE_HANDLE( file ))
throw new Exception( "invalid file handle", __FILE__, __LINE__, __FUNCTION__ );
if( findCoding( file, trackIndex, coding ))
throw new Exception( "supported coding not found", __FILE__, __LINE__, __FUNCTION__ );
MP4Atom* pasp;
if( !findPictureAspectRatioBox( file, *coding, pasp ))
throw new Exception( "pasp-box already exists", __FILE__, __LINE__, __FUNCTION__ );
pasp = MP4Atom::CreateAtom( *((MP4File *)file), coding, BOX_CODE.c_str() );
coding->AddChildAtom( pasp );
pasp->Generate();
MP4Integer16Property* hSpacing;
MP4Integer16Property* vSpacing;
if( pasp->FindProperty( "pasp.hSpacing", (MP4Property**)&hSpacing ))
hSpacing->SetValue( item.hSpacing );
if( pasp->FindProperty( "pasp.vSpacing", (MP4Property**)&vSpacing ))
vSpacing->SetValue( item.vSpacing );
return false;
}
///////////////////////////////////////////////////////////////////////////////
bool
PictureAspectRatioBox::add( MP4FileHandle file, MP4TrackId trackId, const Item& item )
{
MP4File& mp4 = *((MP4File*)file);
return add( file, mp4.FindTrackIndex( trackId ), item );
}
///////////////////////////////////////////////////////////////////////////////
bool
PictureAspectRatioBox::get( MP4FileHandle file, uint16_t trackIndex, Item& item )
{
item.reset();
MP4Atom* coding;
if( findCoding( file, trackIndex, coding ))
throw new Exception( "supported coding not found", __FILE__, __LINE__, __FUNCTION__ );
MP4Atom* pasp;
if( findPictureAspectRatioBox( file, *coding, pasp ))
throw new Exception( "pasp-box not found", __FILE__, __LINE__, __FUNCTION__ );
MP4Integer16Property* hSpacing;
MP4Integer16Property* vSpacing;
if( pasp->FindProperty( "pasp.hSpacing", (MP4Property**)&hSpacing ))
item.hSpacing = hSpacing->GetValue();
if( pasp->FindProperty( "pasp.vSpacing", (MP4Property**)&vSpacing ))
item.vSpacing = vSpacing->GetValue();
return false;
}
///////////////////////////////////////////////////////////////////////////////
bool
PictureAspectRatioBox::get( MP4FileHandle file, MP4TrackId trackId, Item& item )
{
MP4File& mp4 = *((MP4File*)file);
return get( file, mp4.FindTrackIndex( trackId ), item );
}
///////////////////////////////////////////////////////////////////////////////
bool
PictureAspectRatioBox::list( MP4FileHandle file, ItemList& itemList )
{
itemList.clear();
MP4File& mp4 = *((MP4File*)file);
const uint16_t trackc = mp4.GetNumberOfTracks();
for( uint16_t i = 0; i < trackc; i++) {
MP4TrackId id = mp4.FindTrackId( i );
if( id == MP4_INVALID_TRACK_ID )
continue;
const char* type = mp4.GetTrackType( id );
if( !type )
continue;
itemList.resize( itemList.size() + 1 );
IndexedItem& xitem = itemList[itemList.size()-1];
xitem.trackIndex = i;
xitem.trackId = id;
bool success = false;
try {
success = !get( file, i, xitem.item );
}
catch( Exception* x ) {
delete x;
}
if( !success ) {
itemList.resize( itemList.size() - 1 );
continue;
}
}
return false;
}
///////////////////////////////////////////////////////////////////////////////
bool
PictureAspectRatioBox::remove( MP4FileHandle file, uint16_t trackIndex )
{
MP4Atom* coding;
if( findCoding( file, trackIndex, coding ))
throw new Exception( "supported coding not found", __FILE__, __LINE__, __FUNCTION__ );
MP4Atom* pasp;
if( findPictureAspectRatioBox( file, *coding, pasp ))
throw new Exception( "pasp-box not found", __FILE__, __LINE__, __FUNCTION__ );
coding->DeleteChildAtom( pasp );
delete pasp;
return false;
}
///////////////////////////////////////////////////////////////////////////////
bool
PictureAspectRatioBox::remove( MP4FileHandle file, MP4TrackId trackId )
{
MP4File& mp4 = *((MP4File*)file);
return remove( file, mp4.FindTrackIndex( trackId ));
}
///////////////////////////////////////////////////////////////////////////////
bool
PictureAspectRatioBox::set( MP4FileHandle file, uint16_t trackIndex, const Item& item )
{
MP4Atom* coding;
if( findCoding( file, trackIndex, coding ))
throw new Exception( "supported coding not found", __FILE__, __LINE__, __FUNCTION__ );
MP4Atom* pasp;
if( findPictureAspectRatioBox( file, *coding, pasp ))
throw new Exception( "pasp-box not found", __FILE__, __LINE__, __FUNCTION__ );
MP4Integer16Property* hSpacing;
MP4Integer16Property* vSpacing;
if( pasp->FindProperty( "pasp.hSpacing", (MP4Property**)&hSpacing ))
hSpacing->SetValue( item.hSpacing );
if( pasp->FindProperty( "pasp.vSpacing", (MP4Property**)&vSpacing ))
vSpacing->SetValue( item.vSpacing );
return false;
}
///////////////////////////////////////////////////////////////////////////////
bool
PictureAspectRatioBox::set( MP4FileHandle file, MP4TrackId trackId, const Item& item )
{
MP4File& mp4 = *((MP4File*)file);
return set( file, mp4.FindTrackIndex( trackId ), item );
}
///////////////////////////////////////////////////////////////////////////////
PictureAspectRatioBox::IndexedItem::IndexedItem()
: trackIndex ( std::numeric_limits<uint16_t>::max() )
, trackId ( MP4_INVALID_TRACK_ID )
{
}
///////////////////////////////////////////////////////////////////////////////
PictureAspectRatioBox::Item::Item()
: hSpacing ( 1 )
, vSpacing ( 1 )
{
}
///////////////////////////////////////////////////////////////////////////////
void
PictureAspectRatioBox::Item::reset()
{
hSpacing = 1;
vSpacing = 1;
}
///////////////////////////////////////////////////////////////////////////////
void
PictureAspectRatioBox::Item::convertFromCSV( const string& text )
{
istringstream iss( text );
char delim;
iss >> hSpacing;
iss >> delim;
iss >> vSpacing;
// input was good if we end up with only eofbit set
if( iss.rdstate() != ios::eofbit ) {
reset();
ostringstream xss;
xss << "invalid PcitureAspectRatioBox format"
<< " (expecting: hSpacing,vSpacing)"
<< " got: " << text;
throw new Exception( xss.str(), __FILE__, __LINE__, __FUNCTION__ );
}
}
///////////////////////////////////////////////////////////////////////////////
string
PictureAspectRatioBox::Item::convertToCSV() const
{
string buffer;
return convertToCSV( buffer );
}
///////////////////////////////////////////////////////////////////////////////
string&
PictureAspectRatioBox::Item::convertToCSV( string& buffer ) const
{
ostringstream oss;
oss << hSpacing << ',' << vSpacing;
buffer = oss.str();
return buffer;
}
///////////////////////////////////////////////////////////////////////////////
namespace {
///////////////////////////////////////////////////////////////////////////////
bool
findPictureAspectRatioBox( MP4FileHandle file, MP4Atom& coding, MP4Atom*& pasp )
{
pasp = NULL;
MP4Atom* found = NULL;
const uint32_t atomc = coding.GetNumberOfChildAtoms();
for( uint32_t i = 0; i < atomc; i++ ) {
MP4Atom* atom = coding.GetChildAtom( i );
if( BOX_CODE != atom->GetType() )
continue;
found = atom;
}
if( !found )
return true;
pasp = found;
return false;
}
///////////////////////////////////////////////////////////////////////////////
}}}} // namespace mp4v2::impl::qtff::anonymous