307 lines
8.4 KiB
C#
307 lines
8.4 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Runtime.InteropServices;
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using System.Drawing;
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using SlimDX;
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namespace FDK
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{
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public class CAvi : IDisposable
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{
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// プロパティ
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public uint dwスケール
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{
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get;
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set;
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}
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public uint dwレート
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{
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get;
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set;
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}
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public uint nフレーム高さ
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{
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get;
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set;
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}
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public uint nフレーム幅
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{
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get;
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set;
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}
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// コンストラクタ
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public CAvi( string filename )
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{
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if ( AVIFileOpen( out this.aviFile, filename, OpenFileFlags.OF_READ, IntPtr.Zero ) != 0 )
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{
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this.Release();
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throw new Exception( "AVIFileOpen failed." );
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}
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if ( AVIFileGetStream( this.aviFile, out this.aviStream, streamtypeVIDEO, 0 ) != 0 )
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{
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this.Release();
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throw new Exception( "AVIFileGetStream failed." );
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}
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var info = new AVISTREAMINFO();
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AVIStreamInfo( this.aviStream, ref info, Marshal.SizeOf( info ) );
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this.dwレート = info.dwRate;
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this.dwスケール = info.dwScale;
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this.nフレーム幅 = info.rcFrame.right - info.rcFrame.left;
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this.nフレーム高さ = info.rcFrame.bottom - info.rcFrame.top;
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try
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{
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this.frame = AVIStreamGetFrameOpen( this.aviStream, 0 );
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}
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catch
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{
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this.Release();
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throw new Exception( "AVIStreamGetFrameOpen failed." );
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}
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}
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// メソッド
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public static void t初期化()
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{
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AVIFileInit();
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}
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public static void t終了()
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{
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AVIFileExit();
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}
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public Bitmap GetFrame( int no )
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{
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if( this.aviStream == IntPtr.Zero )
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throw new InvalidOperationException();
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return BitmapUtil.ToBitmap( AVIStreamGetFrame( this.frame, no ) );
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}
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public int GetFrameNoFromTime( int time )
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{
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return (int) ( time * ( ( (double) this.dwレート ) / ( 1000.0 * this.dwスケール ) ) );
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}
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public IntPtr GetFramePtr( int no )
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{
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if( this.aviStream == IntPtr.Zero )
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throw new InvalidOperationException();
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return AVIStreamGetFrame( this.frame, no );
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}
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public int GetMaxFrameCount()
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{
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if( this.aviStream == IntPtr.Zero )
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throw new InvalidOperationException();
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return AVIStreamLength( this.aviStream );
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}
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public unsafe void tBitmap24ToGraphicsStreamR5G6B5( BitmapUtil.BITMAPINFOHEADER* pBITMAPINFOHEADER, DataStream gs, int nWidth, int nHeight )
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{
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int nBmpWidth = pBITMAPINFOHEADER->biWidthビットマップの幅dot;
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int nBmpHeight = pBITMAPINFOHEADER->biHeightビットマップの高さdot;
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int nBmpLineByte = ( nBmpWidth * 3 ) + ( ( 4 - ( ( nBmpWidth * 3 ) % 4 ) ) % 4 );
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ushort* pTexture = (ushort*) gs.DataPointer.ToPointer();
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byte* pBitmap = (byte*) ( pBITMAPINFOHEADER + 1 );
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for( int i = 0; i < nBmpHeight; i++ )
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{
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if( i >= nHeight )
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break;
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for( int j = 0; j < nBmpWidth; j++ )
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{
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if( j >= nWidth )
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break;
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ushort B = (ushort) ( ( *( ( pBitmap + ( ( ( nBmpHeight - i ) - 1 ) * nBmpLineByte ) ) + ( j * 3 ) + 0 ) >> 3 ) & 0x1f );
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ushort G = (ushort) ( ( *( ( pBitmap + ( ( ( nBmpHeight - i ) - 1 ) * nBmpLineByte ) ) + ( j * 3 ) + 1 ) >> 2 ) & 0x3f );
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ushort R = (ushort) ( ( *( ( pBitmap + ( ( ( nBmpHeight - i ) - 1 ) * nBmpLineByte ) ) + ( j * 3 ) + 2 ) >> 3 ) & 0x1f );
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*( pTexture + ( i * nWidth ) + j ) = (ushort) ( ( R << 11 ) | ( G << 5 ) | B );
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}
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}
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}
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public unsafe void tBitmap24ToGraphicsStreamX8R8G8B8( BitmapUtil.BITMAPINFOHEADER* pBITMAPINFOHEADER, DataStream ds, int nWidth, int nHeight )
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{
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int nBmpWidth = pBITMAPINFOHEADER->biWidthビットマップの幅dot;
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int nBmpHeight = pBITMAPINFOHEADER->biHeightビットマップの高さdot;
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int nBmpLineByte = ( nBmpWidth * 3 ) + ( ( 4 - ( ( nBmpWidth * 3 ) % 4 ) ) % 4 );
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uint* pTexture = (uint*) ds.DataPointer.ToPointer();
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byte* pBitmap = (byte*) ( pBITMAPINFOHEADER + 1 );
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for( int i = 0; i < nBmpHeight; i++ )
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{
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if( i >= nHeight )
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break;
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for( int j = 0; j < nBmpWidth; j++ )
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{
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if( j >= nWidth )
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break;
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uint B = *( ( pBitmap + ( ( ( nBmpHeight - i ) - 1 ) * nBmpLineByte ) ) + ( j * 3 ) + 0 );
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uint G = *( ( pBitmap + ( ( ( nBmpHeight - i ) - 1 ) * nBmpLineByte ) ) + ( j * 3 ) + 1 );
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uint R = *( ( pBitmap + ( ( ( nBmpHeight - i ) - 1 ) * nBmpLineByte ) ) + ( j * 3 ) + 2 );
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*( pTexture + ( i * nWidth ) + j ) = ( R << 16 ) | ( G << 8 ) | B;
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}
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}
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}
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#region [ Dispose-Finalize パターン実装 ]
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//-----------------
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public void Dispose()
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{
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this.Dispose( true );
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GC.SuppressFinalize( this ); // 2011.8.19 from: 忘れてた。
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}
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protected void Dispose( bool disposeManagedObjects )
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{
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if( this.bDispose完了済み )
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return;
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if( disposeManagedObjects )
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{
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// (A) Managed リソースの解放
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}
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// (B) Unamanaged リソースの解放
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if( this.frame != IntPtr.Zero )
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AVIStreamGetFrameClose( this.frame );
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this.Release();
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this.bDispose完了済み = true;
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}
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~CAvi()
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{
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this.Dispose( false );
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}
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//-----------------
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#endregion
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// その他
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#region [ Win32 AVI関連関数インポート ]
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//-----------------
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internal enum OpenFileFlags : uint
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{
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OF_CANCEL = 0x800,
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OF_CREATE = 0x1000,
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OF_DELETE = 0x200,
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OF_EXIST = 0x4000,
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OF_PARSE = 0x100,
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OF_PROMPT = 0x2000,
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OF_READ = 0,
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OF_READWRITE = 2,
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OF_REOPEN = 0x8000,
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OF_SHARE_COMPAT = 0,
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OF_SHARE_DENY_NONE = 0x40,
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OF_SHARE_DENY_READ = 0x30,
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OF_SHARE_DENY_WRITE = 0x20,
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OF_SHARE_EXCLUSIVE = 0x10,
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OF_VERIFY = 0x400,
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OF_WRITE = 1
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}
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[StructLayout( LayoutKind.Sequential, Pack = 1 )]
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internal struct AVISTREAMINFO
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{
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public uint fccType;
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public uint fccHandler;
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public uint dwFlags;
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public uint dwCaps;
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public ushort wPriority;
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public ushort wLanguage;
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public uint dwScale;
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public uint dwRate;
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public uint dwStart;
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public uint dwLength;
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public uint dwInitialFrames;
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public uint dwSuggestedBufferSize;
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public uint dwQuality;
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public uint dwSampleSize;
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public CAvi.RECT rcFrame;
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public uint dwEditCount;
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public uint dwFormatChangeCount;
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[MarshalAs( UnmanagedType.ByValArray, SizeConst = 0x40 )]
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public ushort[] szName;
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}
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[StructLayout( LayoutKind.Sequential, Pack = 1 )]
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internal struct RECT
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{
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public uint left;
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public uint top;
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public uint right;
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public uint bottom;
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}
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[DllImport( "AVIFIL32" )]
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private static extern void AVIFileExit();
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[DllImport( "AVIFIL32" )]
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private static extern uint AVIFileGetStream( IntPtr pfile, out IntPtr ppavi, uint fccType, int lParam );
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[DllImport( "AVIFIL32" )]
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private static extern void AVIFileInit();
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[DllImport( "AVIFIL32" )]
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private static extern uint AVIFileOpen( out IntPtr ppfile, string szFile, OpenFileFlags mode, IntPtr pclsidHandler );
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[DllImport( "AVIFIL32" )]
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private static extern int AVIFileRelease( IntPtr pfile );
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[DllImport( "AVIFIL32" )]
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private static extern IntPtr AVIStreamGetFrame( IntPtr pgf, int lPos );
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[DllImport( "AVIFIL32" )]
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private static extern uint AVIStreamGetFrameClose( IntPtr pget );
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[DllImport( "AVIFIL32" )]
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private static extern IntPtr AVIStreamGetFrameOpen( IntPtr pavi, int lpbiWanted );
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[DllImport( "AVIFIL32" )]
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private static extern int AVIStreamInfo( IntPtr pavi, ref AVISTREAMINFO psi, int lSize );
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[DllImport( "AVIFIL32" )]
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private static extern int AVIStreamLength( IntPtr pavi );
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[DllImport( "AVIFIL32" )]
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private static extern int AVIStreamRelease( IntPtr pavi );
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//-----------------
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#endregion
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#region [ private ]
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//-----------------
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private IntPtr aviFile = IntPtr.Zero;
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private const string AVIFILE32 = "AVIFIL32";
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private const int AVIGETFRAMEF_BESTDISPLAYFMT = 1;
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private IntPtr aviStream = IntPtr.Zero;
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private bool bDispose完了済み;
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private IntPtr frame = IntPtr.Zero;
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private static readonly uint streamtypeAUDIO = mmioFOURCC( 'a', 'u', 'd', 's' );
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private static readonly uint streamtypeMIDI = mmioFOURCC( 'm', 'i', 'd', 's' );
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private static readonly uint streamtypeTEXT = mmioFOURCC( 't', 'x', 't', 's' );
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private static readonly uint streamtypeVIDEO = mmioFOURCC( 'v', 'i', 'd', 's' );
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private static uint mmioFOURCC( char c0, char c1, char c2, char c3 )
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{
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return ( (uint) c3 << 0x18 ) | ( (uint) c2 << 0x10 ) | ( (uint) c1 << 0x08 ) | (uint) c0;
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}
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private void Release()
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{
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if( this.aviStream != IntPtr.Zero )
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{
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AVIStreamRelease( this.aviStream );
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this.aviStream = IntPtr.Zero;
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}
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if( this.aviFile != IntPtr.Zero )
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{
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AVIFileRelease( this.aviFile );
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this.aviFile = IntPtr.Zero;
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}
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}
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//-----------------
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#endregion
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}
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}
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