---恢复内容开始---
直接上代码
internal static class LibVlcAPI
{ internal struct PointerToArrayOfPointerHelper { [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1000)] public IntPtr[] pointers; } public static IntPtr libvlc_new(string[] arguments) { PointerToArrayOfPointerHelper argv = new PointerToArrayOfPointerHelper(); argv.pointers = new IntPtr[1000];for (int i = 0; i < arguments.Length; i++)
{ argv.pointers[i] = Marshal.StringToHGlobalAnsi(arguments[i]); }IntPtr argvPtr = IntPtr.Zero;
try { int size = Marshal.SizeOf(typeof(PointerToArrayOfPointerHelper)); argvPtr = Marshal.AllocHGlobal(size); Marshal.StructureToPtr(argv, argvPtr, false);return libvlc_new(arguments.Length, argvPtr);
} finally { for (int i = 0; i < arguments.Length + 1; i++) { if (argv.pointers[i] != IntPtr.Zero) { Marshal.FreeHGlobal(argv.pointers[i]); } } if (argvPtr != IntPtr.Zero) { Marshal.FreeHGlobal(argvPtr); } } } //从路径构建一个视频文件 public static IntPtr libvlc_media_new_path(IntPtr libvlc_instance, string path) { IntPtr pMrl = IntPtr.Zero; { byte[] bytes = Encoding.UTF8.GetBytes(path); pMrl = Marshal.AllocHGlobal(bytes.Length + 1); Marshal.Copy(bytes, 0, pMrl, bytes.Length); Marshal.WriteByte(pMrl, bytes.Length, 0); return libvlc_media_new_path(libvlc_instance, pMrl); } } //从网络位置构建一个视频文件 public static IntPtr libvlc_media_new_location(IntPtr libvlc_instance, string path) { IntPtr pMrl = IntPtr.Zero; try { byte[] bytes = Encoding.UTF8.GetBytes(path); pMrl = Marshal.AllocHGlobal(bytes.Length + 1); Marshal.Copy(bytes, 0, pMrl, bytes.Length); Marshal.WriteByte(pMrl, bytes.Length, 0); return libvlc_media_new_path(libvlc_instance, pMrl); } finally { if (pMrl != IntPtr.Zero) { Marshal.FreeHGlobal(pMrl); } } }// ----------------------------------------------------------------------------------------
// 以下是libvlc.dll导出函数// 创建一个libvlc实例，它是引用计数的
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] private static extern IntPtr libvlc_new(int argc, IntPtr argv);// 释放libvlc实例
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern void libvlc_release(IntPtr libvlc_instance);[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)]
[SuppressUnmanagedCodeSecurity] public static extern String libvlc_get_version();// 从视频来源(例如Url)构建一个libvlc_meida
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] private static extern IntPtr libvlc_media_new_location(IntPtr libvlc_instance, IntPtr path);// 从本地文件路径构建一个libvlc_media
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] private static extern IntPtr libvlc_media_new_path(IntPtr libvlc_instance, IntPtr path);[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)]
[SuppressUnmanagedCodeSecurity] public static extern void libvlc_media_release(IntPtr libvlc_media_inst);// 创建libvlc_media_player(播放核心)
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern IntPtr libvlc_media_player_new(IntPtr libvlc_instance);// 将视频(libvlc_media)绑定到播放器上
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern void libvlc_media_player_set_media(IntPtr libvlc_media_player, IntPtr libvlc_media);// 设置图像输出的窗口
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern void libvlc_media_player_set_hwnd(IntPtr libvlc_mediaplayer, Int32 drawable);[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)]
[SuppressUnmanagedCodeSecurity] public static extern void libvlc_media_player_play(IntPtr libvlc_mediaplayer);[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)]
[SuppressUnmanagedCodeSecurity] public static extern void libvlc_media_player_pause(IntPtr libvlc_mediaplayer);[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)]
[SuppressUnmanagedCodeSecurity] public static extern void libvlc_media_player_stop(IntPtr libvlc_mediaplayer);// 解析视频资源的媒体信息(如时长等)
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern void libvlc_media_parse(IntPtr libvlc_media);// 返回视频的时长(必须先调用libvlc_media_parse之后，该函数才会生效)
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern Int64 libvlc_media_get_duration(IntPtr libvlc_media);// 当前播放的时间
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern Int64 libvlc_media_player_get_time(IntPtr libvlc_mediaplayer);// 设置播放位置(拖动)
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern void libvlc_media_player_set_time(IntPtr libvlc_mediaplayer, Int64 time);[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)]
[SuppressUnmanagedCodeSecurity] public static extern void libvlc_media_player_release(IntPtr libvlc_mediaplayer);// 获取和设置音量
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern int libvlc_audio_get_volume(IntPtr libvlc_media_player);[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)]
[SuppressUnmanagedCodeSecurity] public static extern void libvlc_audio_set_volume(IntPtr libvlc_media_player, int volume);// 设置全屏
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern void libvlc_set_fullscreen(IntPtr libvlc_media_player, int isFullScreen);//设置播放速度
[DllImport("libvlc", CallingConvention = CallingConvention.StdCall, ExactSpelling = true)] [SuppressUnmanagedCodeSecurity] public static extern int libvlc_media_player_set_rate(IntPtr libvlc_media, float rate); }这个是将libvlc里面的api导入到c#开发环境中
class VlcPlayer
{ //播放视频文件实例 private IntPtr libvlc_instance_; //播放实例 private IntPtr libvlc_media_player_; //视频时长 private double duration_; public VlcPlayer(string pluginPath) { string plugin_arg = "--plugin-path=" + pluginPath; string[] arguments = { "0", "dummy", "--ignore-config", "--no-video-title", plugin_arg }; //播放视频文件实例 libvlc_instance_ = LibVlcAPI.libvlc_new(arguments); //播放实例 libvlc_media_player_ = LibVlcAPI.libvlc_media_player_new(libvlc_instance_); }//接受窗口句炳
public void SetRenderWindow(int wndHandle) { if (libvlc_instance_ != IntPtr.Zero && wndHandle != 0) { LibVlcAPI.libvlc_media_player_set_hwnd(libvlc_media_player_, wndHandle); } } //播放器控制视频的播放 public void PlayFile(string filePath) { IntPtr libvlc_media = LibVlcAPI.libvlc_media_new_location(libvlc_instance_, filePath); if (libvlc_media != IntPtr.Zero) { LibVlcAPI.libvlc_media_parse(libvlc_media); //返回视频的时长 duration_ = LibVlcAPI.libvlc_media_get_duration(libvlc_media) / 1000.0;LibVlcAPI.libvlc_media_player_set_media(libvlc_media_player_, libvlc_media);
LibVlcAPI.libvlc_media_release(libvlc_media); LibVlcAPI.libvlc_media_player_play(libvlc_media_player_); } } //播放器控制视频文件的解析 public void Pause() { if (libvlc_media_player_ != IntPtr.Zero) { LibVlcAPI.libvlc_media_player_pause(libvlc_media_player_); } } //播放器控制视频文件的停止 public void Stop() { if (libvlc_media_player_ != IntPtr.Zero) { LibVlcAPI.libvlc_media_player_stop(libvlc_media_player_); } }//播放器得到当前的播放时间
public double GetPlayTime() { return LibVlcAPI.libvlc_media_player_get_time(libvlc_media_player_) / 1000.0; }//播放器设置当前的播放时间
public void SetPlayTime(double seekTime) { LibVlcAPI.libvlc_media_player_set_time(libvlc_media_player_, (Int64)(seekTime * 1000)); }//播放器得到当前播放声音大小
public int GetVolume() { return LibVlcAPI.libvlc_audio_get_volume(libvlc_media_player_); }//播放器设置当前的播放声音
public void SetVolume(int volume) { LibVlcAPI.libvlc_audio_set_volume(libvlc_media_player_, volume); } //设置全屏 public void SetFullScreen(bool istrue) { LibVlcAPI.libvlc_set_fullscreen(libvlc_media_player_, istrue ? 1 : 0); }public double Duration()
{ return duration_; }public string Version()
{ return LibVlcAPI.libvlc_get_version(); }public int SetRate(float rate){
return LibVlcAPI.libvlc_media_player_set_rate(libvlc_media_player_,rate); } }
这个是调用 下面导入的函数重新封装
下面我讲解一个方法的调用过程 其他的可以到代码中学习
1. 这个获得视频文件的路径
2.将路径打包传递作为数组的一个元素传给
传递到自己封装的api
传递到api里面
改天给大家代码地址 有需要学习的或者自己可以下载一个完全安全的播放器 我明天会给大家分享地址