C#写的一个视频转换解码器

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C#写的一个视频转换解码器
  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Drawing;
  6 using System.Runtime.InteropServices;
  7 using System.Threading;
  8 using System.Windows.Forms;
  9 using System.IO;
 10 
 11 namespace Basic
 12 {
 13     public class VideoAPI  //视频API类
 14     {
 15         //  视频ＡＰＩ调用
 16         [DllImport("avicap32.dll")]//包含了执行视频捕获的函数，它给AVI文件I/O和视频、音频设备驱动程序提供一个高级接口
 17         public static extern IntPtr capCreateCaptureWindow(string lpszWindowName, int dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hwndParent, int nID);
 18         [DllImport("AVICAP32.dll", CharSet = CharSet.Unicode)]
 19         public static extern bool capGetDriverDescription(int wDriverIndex, StringBuilder lpszName, int cbName, StringBuilder lpszVer, int cbVer);
 20         [DllImport("avicap32.dll")]
 21         public static extern IntPtr capCreateCaptureWindowA(byte[] lpszWindowName, int dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, int nID);
 22         [DllImport("avicap32.dll")]
 23         public static extern bool capGetDriverDescriptionA(short wDriver, byte[] lpszName, int cbName, byte[] lpszVer, int cbVer);
 24         [DllImport("User32.dll")]
 25         public static extern bool SendMessage(IntPtr hWnd, int wMsg, bool wParam, int lParam);
 26         [DllImport("User32.dll")]
 27         public static extern bool SendMessage(IntPtr hWnd, int wMsg, short wParam, int lParam);
 28         [DllImport("User32.dll")]
 29         public static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, int lParam);
 30         [DllImport("User32.dll")]
 31         public static extern bool SendMessage(IntPtr hWnd, int wMsg, short wParam, FrameEventHandler lParam);
 32         [DllImport("User32.dll")]
 33         public static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, ref BITMAPINFO lParam);
 34         [DllImport("User32.dll")]
 35         public static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, ref CAPDRIVERCAPS lParam);
 36         [DllImport("User32.dll")]
 37         public static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, ref CAPTUREPARMS lParam);
 38         [DllImport("User32.dll")]
 39         public static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, ref CAPSTATUS lParam);
 40         [DllImport("User32.dll")]
 41         public static extern int SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int x, int y, int cx, int cy, int wFlags);
 42         [DllImport("avicap32.dll")]
 43         public static extern int capGetVideoFormat(IntPtr hWnd, IntPtr psVideoFormat, int wSize);
 44 
 45         //  常量
 46         // public const int WM_USER = 0x400;
 47         public const int WS_CHILD = 0x40000000;
 48         public const int WS_VISIBLE = 0x10000000;
 49 
 50         public const int SWP_NOMOVE = 0x2;
 51         public const int SWP_NOZORDER = 0x4;
 52         // public const int WM_CAP_DRIVER_CONNECT = WM_USER + 10;
 53         //   public const int WM_CAP_DRIVER_DISCONNECT = WM_USER + 11;
 54         public const int WM_CAP_SET_CALLBACK_FRAME = WM_USER + 5;
 55         //   public const int WM_CAP_SET_PREVIEW = WM_USER + 50;
 56         //  public const int WM_CAP_SET_PREVIEWRATE = WM_USER + 52;
 57         //  public const int WM_CAP_SET_VIDEOFORMAT = WM_USER + 45;
 58         //   public const int WM_CAP_START = WM_USER;
 59         public const int WM_CAP_SAVEDIB = WM_CAP_START + 25;
 60 
 61         public const string avicap32 = "avicap32.dll";
 62         public const int WM_USER = 1024;
 63         /// <summary>
 64         ///WM_CAP_START=WM_USER=1024
 65         /// </summary>
 66         public const int WM_CAP_START = WM_USER;
 67 
 68         // start of unicode messages
 69         /// <summary>
 70         /// 开始   WM_USER + 100=1124
 71         /// </summary>
 72         public const int WM_CAP_UNICODE_START = WM_USER + 100; //开始   1124
 73         /// <summary>
 74         /// /获得 CAPSTR EAMPTR   
 75         /// WM_CAP_START + 1=1025
 76         /// </summary>
 77         public const int WM_CAP_GET_CAPSTREAMPTR = (WM_CAP_START + 1); //获得 CAPSTR EAMPTR
 78         /// <summary>
 79         /// 设置收回错误   WM_CAP_START + 2=1026
 80         /// </summary>
 81         public const int WM_CAP_SET_CALLBACK_ERROR = (WM_CAP_START + 2); //设置收回错误
 82         /// <summary>
 83         /// 设置收回状态 WM_CAP_START + 3=1027
 84         /// </summary>
 85         public const int WM_CAP_SET_CALLBACK_STATUS = (WM_CAP_START + 3); //设置收回状态
 86         /// <summary>
 87         /// 设置收回出产  WM_CAP_START + 4=1028
 88         /// </summary>
 89         public const int WM_CAP_SET_CALLBACK_YIELD = (WM_CAP_START + 4); //设置收回出产
 90         /// <summary>
 91         /// 设置收回结构  WM_CAP_START + 5=1029
 92         /// </summary>
 93         public const int WM_CAP_SET_CALLBACK_FRame = (WM_CAP_START + 5); //设置收回结构
 94         /// <summary>
 95         /// 设置收回视频流  WM_CAP_START + 6=1030
 96         /// </summary>
 97         public const int WM_CAP_SET_CALLBACK_VIDEOSTREAM = (WM_CAP_START + 6); //设置收回视频流
 98         /// <summary>
 99         /// 设置收回视频波流  WM_CAP_START +7=1031
100         /// </summary>
101         public const int WM_CAP_SET_CALLBACK_WAVESTREAM = (WM_CAP_START + 7); //设置收回视频波流
102         /// <summary>
103         /// 获得使用者数据 WM_CAP_START + 8=1032
104         /// </summary>
105         public const int WM_CAP_GET_USER_DATA = (WM_CAP_START + 8); //获得使用者数据
106         /// <summary>
107         /// 设置使用者数据 WM_CAP_START + 9=1033
108         /// </summary>
109         public const int WM_CAP_SET_USER_DATA = (WM_CAP_START + 9); //设置使用者数据
110         /// <summary>
111         /// 驱动程序连接  WM_CAP_START + 10=1034
112         /// </summary>
113         public const int WM_CAP_DRIVER_CONNECT = (WM_CAP_START + 10); //驱动程序连接
114         /// <summary>
115         /// 断开启动程序连接 WM_CAP_START + 11=1035
116         /// </summary>
117         public const int WM_CAP_DRIVER_DISCONNECT = (WM_CAP_START + 11); //断开启动程序连接
118         /// <summary>
119         /// 获得驱动程序名字 WM_CAP_START + 12=1036
120         /// </summary>
121         public const int WM_CAP_DRIVER_GET_NAME = (WM_CAP_START + 12); //获得驱动程序名字
122         /// <summary>
123         /// 获得驱动程序版本 WM_CAP_START + 13=1037
124         /// </summary>
125         public const int WM_CAP_DRIVER_GET_VERSION = (WM_CAP_START + 13); //获得驱动程序版本
126         /// <summary>
127         /// 获得驱动程序帽子 WM_CAP_START + 14=1038
128         /// </summary>
129         public const int WM_CAP_DRIVER_GET_CAPS = (WM_CAP_START + 14); //获得驱动程序帽子
130         /// <summary>
131         /// 设置捕获文件 WM_CAP_START + 20=1044
132         /// </summary>
133         public const int WM_CAP_FILE_SET_CAPTURE_FILE = (WM_CAP_START + 20); //设置捕获文件
134         /// <summary>
135         /// 获得捕获文件 WM_CAP_START + 21=1045
136         /// </summary>
137         public const int WM_CAP_FILE_GET_CAPTURE_FILE = (WM_CAP_START + 21); //获得捕获文件
138         /// <summary>
139         /// 另存文件为  WM_CAP_START + 23=1047
140         /// </summary>
141         public const int WM_CAP_FILE_SAVEAS = (WM_CAP_START + 23); //另存文件为
142         /// <summary>
143         /// 保存文件    WM_CAP_START + 25=1049
144         /// </summary>
145         public const int WM_CAP_FILE_SAVEDIB = (WM_CAP_START + 25); //保存文件
146 
147         // out of order to save on ifdefs
148         /// <summary>
149         /// 分派文件  WM_CAP_START + 22=1044
150         /// </summary>
151         public const int WM_CAP_FILE_ALLOCATE = (WM_CAP_START + 22); //分派文件
152         /// <summary>
153         /// 设置开始文件  WM_CAP_START + 24=1046
154         /// </summary>
155         public const int WM_CAP_FILE_SET_INFOCHUNK = (WM_CAP_START + 24); //设置开始文件
156         /// <summary>
157         /// 编辑复制   WM_CAP_START + 30=1054
158         /// </summary>
159         public const int WM_CAP_EDIT_COPY = (WM_CAP_START + 30); //编辑复制
160         /// <summary>
161         /// 设置音频格式  WM_CAP_START + 35=1059
162         /// </summary>
163         public const int WM_CAP_SET_AUDIOFORMAT = (WM_CAP_START + 35); //设置音频格式
164         /// <summary>
165         /// 捕获音频格式  WM_CAP_START + 36=1060
166         /// </summary>
167         public const int WM_CAP_GET_AUDIOFORMAT = (WM_CAP_START + 36); //捕获音频格式
168         /// <summary>
169         /// 打开视频格式设置对话框  WM_CAP_START + 41=1065
170         /// </summary>
171         public const int WM_CAP_DLG_VIDEOFORMAT = (WM_CAP_START + 41); //1065 打开视频格式设置对话框
172         /// <summary>
173         /// 打开属性设置对话框，设置对比度、亮度等   WM_CAP_START + 42=1066
174         /// </summary>
175         public const int WM_CAP_DLG_VIDEOSOURCE = (WM_CAP_START + 42); //1066 打开属性设置对话框，设置对比度、亮度等。
176         /// <summary>
177         /// 打开视频显示 WM_CAP_START + 43=1067
178         /// </summary>
179         public const int WM_CAP_DLG_VIDEODISPLAY = (WM_CAP_START + 43); //1067 打开视频显示
180         /// <summary>
181         /// 获得视频格式 WM_CAP_START + 44=1068
182         /// </summary>
183         public const int WM_CAP_GET_VIDEOFORMAT = (WM_CAP_START + 44); //1068 获得视频格式
184         /// <summary>
185         /// 设置视频格式 WM_CAP_START + 45=1069
186         /// </summary>
187         public const int WM_CAP_SET_VIDEOFORMAT = (WM_CAP_START + 45); //1069 设置视频格式
188         /// <summary>
189         /// 打开压缩设置对话框 WM_CAP_START + 46=1070
190         /// </summary>
191         public const int WM_CAP_DLG_VIDEOCOMPRESSION = (WM_CAP_START + 46); //1070 打开压缩设置对话框
192         /// <summary>
193         /// 设置预览 WM_CAP_START + 50=1074
194         /// </summary>
195         public const int WM_CAP_SET_PREVIEW = (WM_CAP_START + 50); //设置预览
196         /// <summary>
197         /// 设置覆盖 WM_CAP_START + 51=1075
198         /// </summary>
199         public const int WM_CAP_SET_OVERLAY = (WM_CAP_START + 51); //设置覆盖
200         /// <summary>
201         /// 设置预览比例 WM_CAP_START + 52=1076
202         /// </summary>
203         public const int WM_CAP_SET_PREVIEWRATE = (WM_CAP_START + 52); //设置预览比例
204         /// <summary>
205         /// 设置刻度 WM_CAP_START + 53=1077
206         /// </summary>
207         public const int WM_CAP_SET_SCALE = (WM_CAP_START + 53); //设置刻度
208         /// <summary> 
209         /// 获得状态 WM_CAP_START + 54=1078
210         /// </summary>
211         public const int WM_CAP_GET_STATUS = (WM_CAP_START + 54); //获得状态
212         /// <summary>
213         /// 设置卷 WM_CAP_START + 55=1079
214         /// </summary>
215         public const int WM_CAP_SET_SCROLL = (WM_CAP_START + 55); //设置卷
216         /// <summary>
217         /// 逮捕结构 WM_CAP_START + 60=1084
218         /// </summary>
219         public const int WM_CAP_GRAB_FRame = (WM_CAP_START + 60); //逮捕结构
220         /// <summary>
221         /// 停止逮捕结构 WM_CAP_START + 61=1085
222         /// </summary>
223         public const int WM_CAP_GRAB_FRame_NOSTOP = (WM_CAP_START + 61); //停止逮捕结构
224         /// <summary>
225         /// 次序 WM_CAP_START + 62=1086
226         /// </summary>
227         public const int WM_CAP_SEQUENCE = (WM_CAP_START + 62); //次序
228         /// <summary>
229         /// 没有文件 WM_CAP_START + 63=1087
230         /// </summary>
231         public const int WM_CAP_SEQUENCE_NOFILE = (WM_CAP_START + 63); //没有文件
232         /// <summary>
233         /// 设置安装次序 WM_CAP_START + 64=1088
234         /// </summary>
235         public const int WM_CAP_SET_SEQUENCE_SETUP = (WM_CAP_START + 64); //设置安装次序
236         /// <summary>
237         /// 获得安装次序 WM_CAP_START + 65=1089
238         /// </summary>
239         public const int WM_CAP_GET_SEQUENCE_SETUP = (WM_CAP_START + 65); //获得安装次序
240         /// <summary>
241         /// 设置媒体控制接口 WM_CAP_START + 66=1090
242         /// </summary>
243         public const int WM_CAP_SET_MCI_DEVICE = (WM_CAP_START + 66); //设置媒体控制接口
244         /// <summary>
245         /// 获得媒体控制接口 WM_CAP_START + 67=1091
246         /// </summary>
247         public const int WM_CAP_GET_MCI_DEVICE = (WM_CAP_START + 67); //获得媒体控制接口 
248         /// <summary>
249         /// 停止 WM_CAP_START + 68=1092
250         /// </summary>
251         pu