public AVIStream(AVIStreamType type, int streamID)
{
Type = type;
FourCC = AVIHelper.StreamFourCC(streamID, AVIHelper.StreamTwoCC(type), false);
FormatExtra = new byte[0];
ChunkList = new List <StreamChunkInfo>();
}
private void MakeOpenDMLIndexes()
{
for (int iStream = 0; iStream < _streamList.Count; iStream++)
{
const byte AVI_INDEX_OF_INDEXES = 0x00;
AVIStream stream = _streamList[iStream];
List <StreamChunkInfo> chunkList = stream.ChunkList;
AVISUPERINDEX header = new AVISUPERINDEX();
AVISUPERINDEXENTRY entry;
int entriesPerChunk, entryOffset, chunksLeft, buffPos;
uint indexChunkID = AVIHelper.StreamFourCC(AVIHelper.StreamID(stream.FourCC, false), "ix", true);
byte[] buff;
buffPos = 0;
buff = new byte[OpenDMLSuperIndexSize(MaxOpenDMLSuperIndexEntries)];
entriesPerChunk = (int)CalculateOpenDMLStandardIndexEntryCount(chunkList);
entryOffset = 0;
chunksLeft = chunkList.Count;
header.wLongsPerEntry = 4;
header.bIndexSubType = 0;
header.bIndexType = AVI_INDEX_OF_INDEXES;
header.nEntriesInUse = (uint)((chunksLeft + (entriesPerChunk - 1)) / entriesPerChunk);
header.dwChunkID = stream.FourCC;
if (header.nEntriesInUse > MaxOpenDMLSuperIndexEntries)
{
throw new Exception("Too many super-index entries.");
}
buffPos += StructHelper <AVISUPERINDEX> .ToBytes(header, buff, buffPos, false);
while (chunksLeft > 0)
{
int length = Math.Min(entriesPerChunk, chunksLeft);
byte[] tmp = MakeOpenDMLStandardIndexChunk(chunkList, entryOffset, length,
stream.FourCC);
CheckExtend((uint)tmp.Length);
entry.qwOffset = (ulong)WriteChunk(indexChunkID, tmp);
entry.dwSize = (uint)tmp.Length + 8;
entry.dwDuration = (stream.Type == AVIStreamType.Video) ? (uint)length :
CalculateDuration(chunkList, entryOffset, length);
BitConverterLE.WriteBytes(entry.qwOffset, buff, buffPos);
BitConverterLE.WriteBytes(entry.dwSize, buff, buffPos + 8);
BitConverterLE.WriteBytes(entry.dwDuration, buff, buffPos + 12);
buffPos += 16;
entryOffset += length;
chunksLeft -= length;
}
stream.OpenDMLSuperIndex = buff;
}
}
public void SetStreamTwoCC(int streamID, string twoCC)
{
_streamList[streamID].FourCC = AVIHelper.StreamFourCC(streamID, twoCC, false);
}