處理AVI所需的API - Part2

partial class AVIFileAPI
{
　// 獲得資料流檔頭資訊
　[DllImport("avifil32.dll")]
　extern internal static int AVIStreamInfo(IntPtr pavi, out AVISTREAMINFO psi, int lSize);

　[DllImport("avifil32.dll")]
　extern internal static int AVIStreamRelease(IntPtr pavi);

　// 得到一個取得Freame的物件
　[DllImport("avifil32.dll")]
　extern internal static IntPtr AVIStreamGetFrameOpen(IntPtr pavi, ref BITMAPINFOHEADER lpbiWanted);

　[DllImport("avifil32.dll")]
　extern internal static IntPtr AVIStreamGetFrameOpen(IntPtr pavi, int lpbiWanted);

　// 取得Frame的DIB
　[DllImport("avifil32.dll")]
　extern internal static IntPtr AVIStreamGetFrame(IntPtr pgf, int lPos);

　// 取得此資料流的總Sample數
　[DllImport("avifil32.dll")]
　extern internal static int AVIStreamLength(IntPtr pavi);

　[DllImport("avifil32.dll")]
　extern internal static int AVIStreamRead(IntPtr pavi, int lStart, int lSamples, IntPtr lpBuffer, int cbBuffer, out int plBytes, out int plSamples);

　// 讀取資料流指定位置的Frame的格式資訊
　[DllImport("avifil32.dll")]
　extern internal static int AVIStreamReadFormat(IntPtr pavi, int lPos, out BITMAPINFOHEADER lpFormat, out int lpcbFormat);

　[DllImport("avifil32.dll")]
　extern internal static uint AVIStreamGetFrameClose(IntPtr pget);

　// 取得此資料流的起始Sample編號
　[DllImport("avifil32.dll")]
　extern internal static int AVIStreamStart(IntPtr pavi);
}