mirror of
https://git.femboyfinancial.jp/james/lipsync.git
synced 2024-11-22 10:42:03 -08:00
484 lines
18 KiB
C#
484 lines
18 KiB
C#
using System;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.Runtime.InteropServices;
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using System.IO;
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namespace Plugin {
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public class Avi {
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public const int StreamtypeVIDEO = 1935960438; //mmioStringToFOURCC("vids", 0)
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public const int OF_SHARE_DENY_WRITE = 32;
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public const int BMP_MAGIC_COOKIE = 19778; //ascii string "BM"
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#region structure declarations
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[StructLayout( LayoutKind.Sequential, Pack = 1 )]
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public struct RECT {
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public UInt32 left;
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public UInt32 top;
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public UInt32 right;
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public UInt32 bottom;
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}
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[StructLayout( LayoutKind.Sequential, Pack = 1 )]
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public struct BITMAPINFOHEADER {
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public UInt32 biSize;
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public Int32 biWidth;
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public Int32 biHeight;
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public Int16 biPlanes;
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public Int16 biBitCount;
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public UInt32 biCompression;
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public UInt32 biSizeImage;
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public Int32 biXPelsPerMeter;
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public Int32 biYPelsPerMeter;
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public UInt32 biClrUsed;
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public UInt32 biClrImportant;
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}
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[StructLayout( LayoutKind.Sequential, Pack = 1 )]
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public struct AVISTREAMINFO {
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public UInt32 fccType;
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public UInt32 fccHandler;
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public UInt32 dwFlags;
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public UInt32 dwCaps;
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public UInt16 wPriority;
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public UInt16 wLanguage;
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public UInt32 dwScale;
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public UInt32 dwRate;
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public UInt32 dwStart;
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public UInt32 dwLength;
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public UInt32 dwInitialFrames;
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public UInt32 dwSuggestedBufferSize;
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public UInt32 dwQuality;
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public UInt32 dwSampleSize;
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public RECT rcFrame;
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public UInt32 dwEditCount;
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public UInt32 dwFormatChangeCount;
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[MarshalAs( UnmanagedType.ByValArray, SizeConst = 64 )]
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public UInt16[] szName;
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}
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[StructLayout( LayoutKind.Sequential, Pack = 1 )]
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public struct BITMAPFILEHEADER {
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public Int16 bfType; //"magic cookie" - must be "BM"
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public Int32 bfSize;
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public Int16 bfReserved1;
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public Int16 bfReserved2;
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public Int32 bfOffBits;
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}
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#endregion structure declarations
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#region method declarations
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//Initialize the AVI library
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[DllImport( "avifil32.dll" )]
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public static extern void AVIFileInit();
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//Open an AVI file
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[DllImport( "avifil32.dll", PreserveSig = true )]
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public static extern int AVIFileOpen(
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ref int ppfile,
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String szFile,
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int uMode,
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int pclsidHandler );
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//Get a stream from an open AVI file
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[DllImport( "avifil32.dll" )]
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public static extern int AVIFileGetStream(
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int pfile,
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out IntPtr ppavi,
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int fccType,
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int lParam );
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//Get the start position of a stream
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[DllImport( "avifil32.dll", PreserveSig = true )]
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public static extern int AVIStreamStart( int pavi );
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//Get the length of a stream in frames
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[DllImport( "avifil32.dll", PreserveSig = true )]
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public static extern int AVIStreamLength( int pavi );
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//Get information about an open stream
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[DllImport( "avifil32.dll" )]
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public static extern int AVIStreamInfo(
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int pAVIStream,
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ref AVISTREAMINFO psi,
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int lSize );
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//Get a pointer to a GETFRAME object (returns 0 on error)
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[DllImport( "avifil32.dll" )]
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public static extern int AVIStreamGetFrameOpen(
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IntPtr pAVIStream,
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ref BITMAPINFOHEADER bih );
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/*[DllImport("avifil32.dll")]
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public static extern int AVIStreamGetFrameOpen(
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IntPtr pAVIStream,
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int dummy);*/
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//Get a pointer to a packed DIB (returns 0 on error)
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[DllImport( "avifil32.dll" )]
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public static extern int AVIStreamGetFrame(
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int pGetFrameObj,
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int lPos );
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//Create a new stream in an open AVI file
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[DllImport( "avifil32.dll" )]
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public static extern int AVIFileCreateStream(
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int pfile,
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out IntPtr ppavi,
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ref AVISTREAMINFO ptr_streaminfo );
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//Set the format for a new stream
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[DllImport( "avifil32.dll" )]
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public static extern int AVIStreamSetFormat(
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IntPtr aviStream, Int32 lPos,
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ref BITMAPINFOHEADER lpFormat, Int32 cbFormat );
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//Write a sample to a stream
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[DllImport( "avifil32.dll" )]
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public static extern int AVIStreamWrite(
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IntPtr aviStream, Int32 lStart, Int32 lSamples,
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IntPtr lpBuffer, Int32 cbBuffer, Int32 dwFlags,
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Int32 dummy1, Int32 dummy2 );
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//Release the GETFRAME object
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[DllImport( "avifil32.dll" )]
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public static extern int AVIStreamGetFrameClose(
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int pGetFrameObj );
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//Release an open AVI stream
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[DllImport( "avifil32.dll" )]
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public static extern int AVIStreamRelease( IntPtr aviStream );
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//Release an open AVI file
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[DllImport( "avifil32.dll" )]
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public static extern int AVIFileRelease( int pfile );
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//Close the AVI library
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[DllImport( "avifil32.dll" )]
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public static extern void AVIFileExit();
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#endregion methos declarations
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#region other useful avi functions
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//public const int StreamtypeAUDIO = 1935963489; //mmioStringToFOURCC("auds", 0)
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//public const int StreamtypeMIDI = 1935960429; //mmioStringToFOURCC("mids", 0)
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//public const int StreamtypeTEXT = 1937012852; //mmioStringToFOURCC("txts", 0)
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/*[StructLayout(LayoutKind.Sequential, Pack=1)]
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public struct AVIFILEINFO{
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public Int32 dwMaxBytesPerSecond;
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public Int32 dwFlags;
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public Int32 dwCaps;
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public Int32 dwStreams;
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public Int32 dwSuggestedBufferSize;
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public Int32 dwWidth;
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public Int32 dwHeight;
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public Int32 dwScale;
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public Int32 dwRate;
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public Int32 dwLength;
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public Int32 dwEditCount;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst=64)]
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public char[] szFileType;
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}*/
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/*[StructLayout(LayoutKind.Sequential, Pack=1)]
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public struct AVICOMPRESSOPTIONS {
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public UInt32 fccType;
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public UInt32 fccHandler;
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public UInt32 dwKeyFrameEvery; // only used with AVICOMRPESSF_KEYFRAMES
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public UInt32 dwQuality;
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public UInt32 dwBytesPerSecond; // only used with AVICOMPRESSF_DATARATE
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public UInt32 dwFlags;
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public IntPtr lpFormat;
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public UInt32 cbFormat;
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public IntPtr lpParms;
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public UInt32 cbParms;
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public UInt32 dwInterleaveEvery;
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}*/
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/*[DllImport("avifil32.dll")]
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public static extern int AVIMakeCompressedStream(
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out IntPtr ppsCompressed, IntPtr aviStream,
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ref AVICOMPRESSOPTIONS ao, int dummy);*/
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/*[DllImport("avifil32.dll")]
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public static extern int AVISaveOptions(
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IntPtr hWnd,
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int uiFlags,
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int nStreams,
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ref IntPtr ppavi,
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ref IntPtr ppOptions);*/
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/*[DllImport("avifil32.dll")]
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public static extern int AVIFileInfo(
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int pfile,
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ref AVIFILEINFO pfi,
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int lSize);*/
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/*[DllImport("winmm.dll", EntryPoint="mmioStringToFOURCCA")]
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public static extern int mmioStringToFOURCC(String sz, int uFlags);*/
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/*[DllImport("avifil32.dll")]
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public static extern int AVIStreamRead(
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IntPtr pavi,
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Int32 lStart,
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Int32 lSamples,
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IntPtr lpBuffer,
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Int32 cbBuffer,
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Int32 plBytes,
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Int32 plSamples
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);*/
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#endregion other useful avi functions
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}
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/// <summary>Extract bitmaps from AVI files</summary>
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public class AviReader {
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//position of the first frame, count of frames in the stream
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private int firstFrame = 0, countFrames = 0;
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//pointers
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private int aviFile = 0;
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private int getFrameObject;
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private IntPtr aviStream;
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//stream and header info
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private Avi.AVISTREAMINFO streamInfo;
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public int CountFrames {
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get {
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return countFrames;
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}
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}
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public UInt32 FrameRate {
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get {
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return streamInfo.dwRate / streamInfo.dwScale;
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}
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}
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public Size BitmapSize {
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get {
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return new Size( (int)streamInfo.rcFrame.right, (int)streamInfo.rcFrame.bottom );
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}
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}
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/// <summary>Opens an AVI file and creates a GetFrame object</summary>
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/// <param name="fileName">Name of the AVI file</param>
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public void Open( string fileName ) {
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//Intitialize AVI library
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Avi.AVIFileInit();
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//Open the file
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int result = Avi.AVIFileOpen(
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ref aviFile, fileName,
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Avi.OF_SHARE_DENY_WRITE, 0 );
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if ( result != 0 ) {
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throw new Exception( "Exception in AVIFileOpen: " + result.ToString() );
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}
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//Get the video stream
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result = Avi.AVIFileGetStream(
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aviFile,
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out aviStream,
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Avi.StreamtypeVIDEO, 0 );
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if ( result != 0 ) {
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throw new Exception( "Exception in AVIFileGetStream: " + result.ToString() );
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}
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firstFrame = Avi.AVIStreamStart( aviStream.ToInt32() );
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countFrames = Avi.AVIStreamLength( aviStream.ToInt32() );
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streamInfo = new Avi.AVISTREAMINFO();
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result = Avi.AVIStreamInfo( aviStream.ToInt32(), ref streamInfo, Marshal.SizeOf( streamInfo ) );
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if ( result != 0 ) {
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throw new Exception( "Exception in AVIStreamInfo: " + result.ToString() );
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}
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//Open frames
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Avi.BITMAPINFOHEADER bih = new Avi.BITMAPINFOHEADER();
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bih.biBitCount = 24;
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bih.biClrImportant = 0;
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bih.biClrUsed = 0;
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bih.biCompression = 0; //BI_RGB;
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bih.biHeight = (Int32)streamInfo.rcFrame.bottom;
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bih.biWidth = (Int32)streamInfo.rcFrame.right;
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bih.biPlanes = 1;
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bih.biSize = (UInt32)Marshal.SizeOf( bih );
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bih.biXPelsPerMeter = 0;
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bih.biYPelsPerMeter = 0;
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getFrameObject = Avi.AVIStreamGetFrameOpen( aviStream, ref bih ); //force function to return 24bit DIBS
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//getFrameObject = Avi.AVIStreamGetFrameOpen(aviStream, 0); //return any bitmaps
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if ( getFrameObject == 0 ) {
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throw new Exception( "Exception in AVIStreamGetFrameOpen!" );
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}
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}
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/// <summary>Closes all streams, files and libraries</summary>
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public void Close() {
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if ( getFrameObject != 0 ) {
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Avi.AVIStreamGetFrameClose( getFrameObject );
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getFrameObject = 0;
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}
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if ( aviStream != IntPtr.Zero ) {
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Avi.AVIStreamRelease( aviStream );
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aviStream = IntPtr.Zero;
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}
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if ( aviFile != 0 ) {
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Avi.AVIFileRelease( aviFile );
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aviFile = 0;
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}
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Avi.AVIFileExit();
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}
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public Bitmap Export( int position ) {
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if ( position > countFrames ) {
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throw new Exception( "Invalid frame position" );
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}
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//Decompress the frame and return a pointer to the DIB
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int pDib = Avi.AVIStreamGetFrame( getFrameObject, firstFrame + position );
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//Copy the bitmap header into a managed struct
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Avi.BITMAPINFOHEADER bih = new Avi.BITMAPINFOHEADER();
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bih = (Avi.BITMAPINFOHEADER)Marshal.PtrToStructure( new IntPtr( pDib ), bih.GetType() );
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/*if(bih.biBitCount < 24){
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throw new Exception("Not enough colors! DIB color depth is less than 24 bit.");
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}else */
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if ( bih.biSizeImage < 1 ) {
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throw new Exception( "Exception in AVIStreamGetFrame: Not bitmap decompressed." );
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}
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//Copy the image
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byte[] bitmapData = new byte[bih.biSizeImage];
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int address = pDib + Marshal.SizeOf( bih );
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for ( int offset = 0; offset < bitmapData.Length; offset++ ) {
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bitmapData[offset] = Marshal.ReadByte( new IntPtr( address ) );
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address++;
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}
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//Copy bitmap info
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byte[] bitmapInfo = new byte[Marshal.SizeOf( bih )];
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IntPtr ptr;
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ptr = Marshal.AllocHGlobal( bitmapInfo.Length );
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Marshal.StructureToPtr( bih, ptr, false );
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address = ptr.ToInt32();
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for ( int offset = 0; offset < bitmapInfo.Length; offset++ ) {
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bitmapInfo[offset] = Marshal.ReadByte( new IntPtr( address ) );
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address++;
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}
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//Create file header
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Avi.BITMAPFILEHEADER bfh = new Avi.BITMAPFILEHEADER();
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bfh.bfType = Avi.BMP_MAGIC_COOKIE;
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bfh.bfSize = (Int32)(55 + bih.biSizeImage); //size of file as written to disk
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bfh.bfReserved1 = 0;
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bfh.bfReserved2 = 0;
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bfh.bfOffBits = Marshal.SizeOf( bih ) + Marshal.SizeOf( bfh );
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//Create or overwrite the destination file
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MemoryStream fs = new MemoryStream();
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//FileStream fs = new FileStream( dstFileName, System.IO.FileMode.Create );
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BinaryWriter bw = new BinaryWriter( fs );
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//Write header
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bw.Write( bfh.bfType );
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bw.Write( bfh.bfSize );
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bw.Write( bfh.bfReserved1 );
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bw.Write( bfh.bfReserved2 );
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bw.Write( bfh.bfOffBits );
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//Write bitmap info
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bw.Write( bitmapInfo );
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//Write bitmap data
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bw.Write( bitmapData );
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bw.Close();
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// fs.Close();
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fs.Flush();
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fs.Seek( 0, SeekOrigin.Begin );
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Bitmap bmp = new Bitmap( fs );
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fs.Close();
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return bmp;
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}
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/// <summary>Exports a frame into a bitmap file</summary>
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/// <param name="position">Position of the frame</param>
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/// <param name="dstFileName">Name ofthe file to store the bitmap</param>
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public void ExportBitmap( int position, String dstFileName ) {
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if ( position > countFrames ) {
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throw new Exception( "Invalid frame position" );
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}
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//Decompress the frame and return a pointer to the DIB
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int pDib = Avi.AVIStreamGetFrame( getFrameObject, firstFrame + position );
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//Copy the bitmap header into a managed struct
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Avi.BITMAPINFOHEADER bih = new Avi.BITMAPINFOHEADER();
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bih = (Avi.BITMAPINFOHEADER)Marshal.PtrToStructure( new IntPtr( pDib ), bih.GetType() );
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/*if(bih.biBitCount < 24){
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throw new Exception("Not enough colors! DIB color depth is less than 24 bit.");
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}else */
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if ( bih.biSizeImage < 1 ) {
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throw new Exception( "Exception in AVIStreamGetFrame: Not bitmap decompressed." );
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}
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//Copy the image
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byte[] bitmapData = new byte[bih.biSizeImage];
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int address = pDib + Marshal.SizeOf( bih );
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for ( int offset = 0; offset < bitmapData.Length; offset++ ) {
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bitmapData[offset] = Marshal.ReadByte( new IntPtr( address ) );
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address++;
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}
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//Copy bitmap info
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byte[] bitmapInfo = new byte[Marshal.SizeOf( bih )];
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IntPtr ptr;
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ptr = Marshal.AllocHGlobal( bitmapInfo.Length );
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Marshal.StructureToPtr( bih, ptr, false );
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address = ptr.ToInt32();
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for ( int offset = 0; offset < bitmapInfo.Length; offset++ ) {
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bitmapInfo[offset] = Marshal.ReadByte( new IntPtr( address ) );
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address++;
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}
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//Create file header
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Avi.BITMAPFILEHEADER bfh = new Avi.BITMAPFILEHEADER();
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bfh.bfType = Avi.BMP_MAGIC_COOKIE;
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bfh.bfSize = (Int32)(55 + bih.biSizeImage); //size of file as written to disk
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bfh.bfReserved1 = 0;
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bfh.bfReserved2 = 0;
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bfh.bfOffBits = Marshal.SizeOf( bih ) + Marshal.SizeOf( bfh );
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//Create or overwrite the destination file
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FileStream fs = new FileStream( dstFileName, System.IO.FileMode.Create );
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BinaryWriter bw = new BinaryWriter( fs );
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//Write header
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bw.Write( bfh.bfType );
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bw.Write( bfh.bfSize );
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bw.Write( bfh.bfReserved1 );
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bw.Write( bfh.bfReserved2 );
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bw.Write( bfh.bfOffBits );
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//Write bitmap info
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bw.Write( bitmapInfo );
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//Write bitmap data
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bw.Write( bitmapData );
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bw.Close();
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fs.Close();
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}
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}
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}
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