SewiGの日記
2006-06-23 [金] [長年日記]
■ [C#][Programming] C#でサウンド(3)
DirectShowを使う
今回はCOMを使用します。なので、DLLを作ります。
> vcvars32 > tlbimp C:\WINDOWS\System32\quartz.dll
↑「C:\WINDOWS」の部分は各自の環境に読み替えてください。カレントディレクトリにQuartzTypeLib.dllができます。コレを参照設定に追加すればOKです。
次に再生。
using System.Runtime.InteropServices;
QuartzTypeLib.IMediaControl mc;
QuartzTypeLib.IMediaEvent e;
int b;
try {
mc = new QuartzTypeLib.FilgraphManagerClass();
mc.RenderFile("hoge.mp3");
mc.Run();
e = (QuartzTypeLib.IMediaEvent)mc;
e.WaitForCompletion(-1, out b);
mc.Stop();
if (mc != null) {
Marshal.ReleaseComObject(mc);
}
if (e != null) {
Marshal.ReleaseComObject(e);
}
}
catch(Exception) {
}
同様の方法で、DirectShowが対応できる形式ならいけます。動画だと新規ウィンドウができてしまうので、Panelに表示させて、Formに貼り付けるといいでしょう。
class DShow : Form {
QuartzTypeLib.IMediaControl mc;
QuartzTypeLib.IVideoWindow vw;
QuartzTypeLib.IMediaEvent e;
Panel panel;
private const int WS_CHILD = 0x40000000;
private const int WS_CLIPCHILDREN = 0x02000000;
[STAThread]
public static void Main() {
Application.Run(new DShow());
}
public DShow() {
ClientSize = new Size(640, 480);
panel = new Panel();
panel.Location = new Point(0, 0);
panel.Size = new Size(640, 480);
Controls.Add(panel);
try {
mc = new QuartzTypeLib.FilgraphManagerClass();
mc.RenderFile("hoge.wmv");
vw = mc as QuartzTypeLib.IVideoWindow;
vw.Owner = (int)panel.Handle;
vw.WindowStyle = WS_CHILD | WS_CLIPCHILDREN;
vw.SetWindowPosition(ClientRectangle.Left,
ClientRectangle.Top,
ClientRectangle.Width,
ClientRectangle.Height);
Show();
Play();
}
catch(Exception) {
}
}
public void Play() {
int b = 0;
mc.Run();
e = (QuartzTypeLib.IMediaEvent)mc;
e.WaitForCompletion(-1, out b);
mc.Stop();
vw.Visible = 0;
if (vw != null) {
Marshal.ReleaseComObject(vw);
}
if (mc != null) {
Marshal.ReleaseComObject(mc);
}
if (e != null) {
Marshal.ReleaseComObject(e);
}
}
}
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