c# 播放器支持所有格式

---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);

// 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);

// 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

c# 播放器支持所有格式

1. 这个获得视频文件的路径

c# 播放器支持所有格式

2.将路径打包传递作为数组的一个元素传给

c# 播放器支持所有格式

传递到自己封装的api

c# 播放器支持所有格式

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

秒客网

c# 播放器支持所有格式

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