public void ReadSample(UInt32 index, byte[] buffer, int offset)
{
var sampleEntry = SampleEntries[index];
UInt32 seekInChunk = 0;
for (uint i = 0; i < sampleEntry.IndexInChunk; i++)
{
seekInChunk += STSZ.SampleSize(index - i - 1);
}
uint dataIndex = STCO.Items[sampleEntry.ChunkIndex] + seekInChunk;
Stream.Position = dataIndex;
Stream.Read(buffer, offset, (int)STSZ.SampleSize(index));
}
private void WriteBytesSTSZ(MemoryStream ms)
{
byte [] tmp;
STSZ stsz = (STSZ)this.data;
ms.Write(stsz.Dummy, 0, stsz.Dummy.Length);
tmp = BitConverter.GetBytes(stsz.Table.Length);
Utility.LeReverse(tmp);
ms.Write(tmp, 0, tmp.Length);
if (BitConverter.ToUInt32(stsz.Dummy, 4) == 0)
{
for (int i = 0; i < stsz.Table.Length; i++)
{
tmp = BitConverter.GetBytes(stsz.Table[i]);
Utility.LeReverse(tmp);
ms.Write(tmp, 0, tmp.Length);
}
}
}
private void ParseSTSZ(BinaryReader br)
{
byte [] tmp;
STSZ stsz = new STSZ();
stsz.Dummy = br.ReadBytes(8);
tmp = br.ReadBytes(4); Utility.LeReverse(tmp);
stsz.Table = new int[BitConverter.ToInt32(tmp, 0)];
if (BitConverter.ToUInt32(stsz.Dummy, 4) == 0)
{
for (int i = 0; i < stsz.Table.Length; i++)
{
tmp = br.ReadBytes(4); Utility.LeReverse(tmp);
stsz.Table[i] = BitConverter.ToInt32(tmp, 0);
}
}
this.data = stsz;
}
private void ParseSTSZ( BinaryReader br )
{
byte [] tmp;
STSZ stsz = new STSZ();
stsz.Dummy = br.ReadBytes( 8 );
tmp = br.ReadBytes( 4 ); Utility.LeReverse( tmp );
stsz.Table = new int[ BitConverter.ToInt32( tmp, 0 ) ];
if( BitConverter.ToUInt32( stsz.Dummy, 4 ) == 0 )
{
for( int i = 0; i < stsz.Table.Length; i++ )
{
tmp = br.ReadBytes( 4 ); Utility.LeReverse( tmp );
stsz.Table[ i ] = BitConverter.ToInt32( tmp, 0 );
}
}
this.data = stsz;
}
