icdraw.cs

语音视频功能 里面实现了基本的QQ与语音对话

using System;
using System.Text;
using System.Drawing;
using System.Diagnostics;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace gowk.multimedia
{
	/// <summary>
	/// ICDraw 的摘要说明。
	/// </summary>
	public class ICDrawer:ICM
	{
		private Control ctl;
		public Control Control
		{
			get{return this.ctl;}
			set{this.ctl=value;}
		}
		public Rectangle SrcRect,DstRect;
		public ICDrawer(int fourcc):base(ICMODE.ICMODE_DRAW,fourcc)
		{
		}
		public override void Open()//(IntPtr p)
		{
			base.Open();
			BITMAPINFOHEADER h=this.InFormat.bmiHeader;
			System.Drawing.Graphics g=this.Control.CreateGraphics();
			IntPtr hdc=g.GetHdc();
		//	base.Open ();
			int ret=ICDrawBegin(
				this.HIC,
				ICDRAWFlag.ICDRAW_HDC|ICDRAWFlag.ICDRAW_CONTINUE,
				IntPtr.Zero,
				this.Control.Handle,
				hdc,
				this.DstRect.X,this.DstRect.Y,this.DstRect.Width,this.DstRect.Height,
				ref h,
				this.SrcRect.X,this.SrcRect.Y,this.SrcRect.Width,this.SrcRect.Height,
				this.Compvars.lDataRate,
				(int)(this.Compvars.lDataRate/this.Compvars.lKey)
				);
		//	g.ReleaseHdc(hdc);
		//	g.Dispose();
		}

		public override byte[] Process(byte[] data)
		{
			BITMAPINFOHEADER h=this.InFormat.bmiHeader;
	//		return base.Process (data);
			try
			{
				int ret=ICDraw(this.HIC,0,ref h,data,data.Length,0);
			}
			catch(System.Exception ex)
			{
				MessageBox.Show(ex.Message);
			}
	//		ICDraw(pDlg->m_CV.hic,0,&pDlg->m_InInfo.bmiHeader,VideoData.Buf,VideoData.nUsedSize,VideoData.nSampleNum);
			return null;
		}
		protected override void Close()
		{
			if(this.HIC!=0)
				ICM.ICSendMessage(this.HIC,ICM_DRAW_END,0,0);
			base.Close ();
		}

	/*	[DllImport("MSVFW32.dll")]
		static extern int ICDrawBegin(
			int hic,
			ICDRAWFlag dwFlags,        // flags
			IntPtr hpal,           // palette to draw with
			IntPtr    hwnd,           // window to draw to
			IntPtr  hdc,            // HDC to draw to
			int   xDst,           // destination rectangle
			int yDst,
			int dxDst,
			int dyDst,
			ref BITMAPINFOHEADER  lpbi,           // format of frame to draw
			int  xSrc,           // source rectangle
			int  ySrc,
			int  dxSrc,
			int  dySrc,
			int   dwRate,         // frames/second = (dwRate/dwScale)
			int dwScale
			);*/

		[DllImport("MSVFW32.dll")]
		static extern int ICDraw(
			int                 hic,
			int               dwFlags,        // flags
			ref BITMAPINFOHEADER      lpFormat,       // format of frame to decompress
			byte[]            lpData,         // frame data to decompress
			int cbData,         // size of data
			int                lTime           // time to draw this frame
			);
static readonly uint ICDRAW_HURRYUP      =0x80000000;   // don't draw just buffer (hurry up!)
static readonly uint ICDRAW_UPDATE       =0x40000000;   // don't draw just update screen
static readonly int  ICM_DRAW_END                =(ICM_USER+21);
	}
}