FDK17プロジェクト/コード/04.グラフィック/CAviDS.cs

   1 using System;\r
   2 using System.Collections.Generic;\r
   3 using System.Linq;\r
   4 using System.Text;\r
   5 using System.Threading.Tasks;\r
   6 using System.Runtime.InteropServices;\r
   7 using DirectShowLib;\r
   8 using DirectShowLib.DES;\r
   9 using SlimDX;\r
  10 \r
  11 namespace FDK\r
  12 {\r
  13         public class CAviDS : IDisposable\r
  14         {\r
  15                 public uint nフレーム高さ\r
  16                 {\r
  17                         get\r
  18                         {\r
  19                                 return (uint)nHeight;\r
  20                         }\r
  21                 }\r
  22 \r
  23                 public uint nフレーム幅\r
  24                 {\r
  25                         get\r
  26                         {\r
  27                                 return (uint)nWidth;\r
  28                         }\r
  29                 }\r
  30 \r
  31                 IMediaDet mediaDet;\r
  32                 int nWidth;\r
  33                 int nHeight;\r
  34                 double mediaLength; // in second\r
  35                 VideoInfoHeader videoInfo;\r
  36                 IntPtr bufferPtr;\r
  37 \r
  38                 public int GetDuration()\r
  39                 {\r
  40                         return (int)(1000 * mediaLength);\r
  41                 }\r
  42 \r
  43                 // コンストラクタ\r
  44                 public CAviDS(string filename)\r
  45                 {\r
  46                         // DirectShow による AVI 再生\r
  47                         mediaDet = (IMediaDet)new MediaDet();\r
  48                         AMMediaType mediaType = null;\r
  49                         bufferPtr = IntPtr.Zero;\r
  50 \r
  51                         try\r
  52                         {\r
  53                                 int nStreams;\r
  54                                 Guid type = Guid.Empty;\r
  55 \r
  56                                 mediaType = new AMMediaType();\r
  57 \r
  58                                 // Set media filename\r
  59                                 mediaDet.put_Filename(filename);\r
  60 \r
  61                                 // Get the number of streams in that media\r
  62                                 mediaDet.get_OutputStreams(out nStreams);\r
  63                                 for (int nIndexStream = 0; nIndexStream < nStreams; ++nIndexStream)\r
  64                                 {\r
  65                                         mediaDet.put_CurrentStream(nIndexStream);\r
  66                                         mediaDet.get_StreamType(out type);\r
  67                                         if (type == MediaType.Video)\r
  68                                         {\r
  69                                                 // This stream is video\r
  70                                                 break;\r
  71                                         }\r
  72                                 }\r
  73 \r
  74                                 if (type == MediaType.Video)\r
  75                                 {\r
  76                                         // Get video info ( width, height, media length (in second)\r
  77                                         mediaDet.get_StreamMediaType(mediaType);\r
  78                                         videoInfo = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.formatPtr, typeof(VideoInfoHeader));\r
  79                                         DsUtils.FreeAMMediaType(mediaType);\r
  80                                         mediaType = null;\r
  81 \r
  82                                         nWidth = videoInfo.BmiHeader.Width;\r
  83                                         nHeight = videoInfo.BmiHeader.Height;\r
  84                                         mediaDet.get_StreamLength(out mediaLength);\r
  85 \r
  86                                         // あらかじめテクスチャ用のメモリを確保\r
  87                                         int bufferSize;\r
  88                                         mediaDet.GetBitmapBits(1, out bufferSize, IntPtr.Zero, nWidth, nHeight);\r
  89                                         bufferPtr = Marshal.AllocHGlobal(bufferSize);\r
  90                                 }\r
  91                         }\r
  92                         catch (Exception e)\r
  93                         {\r
  94                                 if (mediaType != null)\r
  95                                 {\r
  96                                         // free unmanaged resource if the exception is occured while obtaining videoinfo\r
  97                                         DsUtils.FreeAMMediaType(mediaType);\r
  98                                 }\r
  99                                 throw new ArgumentException(String.Format("ファイルを正常に開けませんでした。\"{0}\", DirectShow による例外メッセージ: {1}", filename, e.Message));\r
 100                         }\r
 101                 }\r
 102 \r
 103                 public unsafe void tGetBitmap(SlimDX.Direct3D9.Device device, CTexture ctex, int timeInMs)\r
 104                 {\r
 105                         int bufferSize;\r
 106                         mediaDet.GetBitmapBits(timeInMs / 1000f, out bufferSize, IntPtr.Zero, nWidth, nHeight);\r
 107                         // データは R8G8B8\r
 108                         mediaDet.GetBitmapBits(timeInMs / 1000f, out bufferSize, bufferPtr, nWidth, nHeight);\r
 109                         byte* sourcePtr = (byte*)bufferPtr.ToPointer() + Marshal.SizeOf(videoInfo.BmiHeader);\r
 110                         int nBmpLineByte = (nWidth * 3) + ((4 - ((nWidth * 3) % 4)) % 4);\r
 111 \r
 112                         DataRectangle rectangle3 = ctex.texture.LockRectangle(0, SlimDX.Direct3D9.LockFlags.None);\r
 113                         rectangle3.Data.Seek(0, System.IO.SeekOrigin.Begin);\r
 114                         uint* outPtr = (uint*)rectangle3.Data.DataPointer.ToPointer();\r
 115                         for (int i = 0; i < nHeight; ++i)\r
 116                         {\r
 117                                 for (int j = 0; j < nWidth; ++j)\r
 118                                 {\r
 119                                         byte B = *((sourcePtr + (((nHeight - i) - 1) * nBmpLineByte)) + (j * 3) + 0);\r
 120                                         byte G = *((sourcePtr + (((nHeight - i) - 1) * nBmpLineByte)) + (j * 3) + 1);\r
 121                                         byte R = *((sourcePtr + (((nHeight - i) - 1) * nBmpLineByte)) + (j * 3) + 2);\r
 122                                         *(outPtr + (i * nWidth + j)) = ((uint)R << 16) | ((uint)G << 8) | B;\r
 123                                 }\r
 124                         }\r
 125                         ctex.texture.UnlockRectangle(0);\r
 126                 }\r
 127 \r
 128                 #region [ Dispose-Finalize パターン実装 ]\r
 129                 //-----------------\r
 130                 public void Dispose()\r
 131                 {\r
 132                         if (!this.bDisposed)\r
 133                         {\r
 134                                 if (bufferPtr != IntPtr.Zero)\r
 135                                 {\r
 136                                         Marshal.FreeHGlobal(bufferPtr);\r
 137                                         bufferPtr = IntPtr.Zero;\r
 138                                 }\r
 139                                 GC.SuppressFinalize(this);    // 2011.8.19 from: 忘れてた。\r
 140                                 this.bDisposed = true;\r
 141                         }\r
 142                 }\r
 143 \r
 144                 ~CAviDS()\r
 145                 {\r
 146                         this.Dispose();\r
 147                 }\r
 148                 //-----------------\r
 149                 #endregion\r
 150 \r
 151                 private bool bDisposed = false;\r
 152         }\r
 153 }\r