void WriteStrfHeaderStructure(RiffChunk chunk)
{
chunk.WriteDWORD(40); // structure size - TOTAL structure size
chunk.WriteDWORD(width); // width
chunk.WriteDWORD(height); // height
chunk.WriteWORD(1); // planes
chunk.WriteWORD(32); // bits per pixel
chunk.WriteDWORD(0); // compression ( BI_RGB == 0 )
chunk.WriteDWORD(width * height * 4); // size image - TODO
chunk.WriteDWORD(0); // X pels per meter
chunk.WriteDWORD(0); // Y pels per meter
chunk.WriteDWORD(0); // clr used
chunk.WriteDWORD(0); // clr important
//NB: No colour table.
}
void WriteStrhHeaderStructure(RiffChunk chunk)
{
chunk.WriteFourCC(RiffAviFourCCCode.Vids); // 'vids'
chunk.WriteFourCC(RiffAviFourCCCode.Dib); // 'DIB '
chunk.WriteDWORD(0); // flags
chunk.WriteWORD(0); // priority
chunk.WriteWORD(0); // language
chunk.WriteDWORD(0); // initial frames
chunk.WriteDWORD(1); // scale
chunk.WriteDWORD(framesPerSecond); // rate
chunk.WriteDWORD(0); // start
strhFrameCountBookmark =
chunk.WriteAndBookmarkDWORD(0); // frameCount
chunk.WriteDWORD(width * height * 4); // suggested buffer size
chunk.WriteDWORD(0); // quality
chunk.WriteDWORD(0); // sample size
chunk.WriteDWORD(0); // left
chunk.WriteDWORD(0); // top
chunk.WriteDWORD((ushort)width); // right
chunk.WriteDWORD((ushort)height); // bottom
}
void WriteAvihHeaderStructure(RiffChunk chunk)
{
UInt32 microSecondsPerFrame =
(UInt32)((1.0 / framesPerSecond) * 1.0E6);
chunk.WriteDWORD(microSecondsPerFrame); // Microseconds per frame
chunk.WriteDWORD(0); // Max Bytes Per Second
chunk.WriteDWORD(0); // Padding granularity
chunk.WriteDWORD(0); // Flags
avihFrameCountBookmark =
chunk.WriteAndBookmarkDWORD(0); // Total frames
chunk.WriteDWORD(0); // Initial frames
chunk.WriteDWORD(1); // Streams
chunk.WriteDWORD(width * height * 4); // Suggested buffer size
chunk.WriteDWORD(width); // Width
chunk.WriteDWORD(height); // Height
chunk.WriteDWORD(0); // Reserved [0]
chunk.WriteDWORD(0); // Reserved [1]
chunk.WriteDWORD(0); // Reserved [2]
chunk.WriteDWORD(0); // Reserved [3]
}
