前言
开源的H264库
https://github.com/cisco/openh264
C#的封装
https://github.com/secile/OpenH264Lib.NET
示例代码:
https://gitee.com/psvmc/z-h264-tools
添加依赖
下面的这个命令并没有下载C#的封装库，只下载了C 的DLL(openh264-2.1.1-win32.dll/openh264-2.1.1-win64.dll)
Install-Package OpenH264.NET -Version 1.0.4我没有使用这种方式，而是自己下载了最新版放在项目下openh264-2.3.1-win32.dll
生成事件=>生成前事件命令行：
代码语言：javascript复制xcopy /Y /d $(ProjectDir)Libsopenh264-2.3.1-win32.dll $(TargetDir)至于C#的封装我下载源码后，把目标设置为4.5.2，生成DLL后引用即可。
调用
代码语言：javascript复制namespace z_h264_tools
{
using System;
using System.Threading;
using Utils;
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow
{
private bool _isStart;
public MainWindow()
{
InitializeComponent();
Closing = MainWindow_Closing;
ScreenTest();
}
private void MainWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
_isStart = false;
}
private void ScreenTest()
{
_isStart = true;
var encoder = new OpenH264Lib.Encoder("openh264-2.3.1-win32.dll");
var decoder = new OpenH264Lib.Decoder("openh264-2.3.1-win32.dll");
// setup encoder
float fps = 10.0f;
int bps = 5000 * 1000; // target bitrate. 5Mbps.
float keyFrameInterval = 2.0f; // insert key frame interval. unit is second.
encoder.Setup
(
1920,
1080,
bps,
fps,
keyFrameInterval,
(
data,
length,
frameType
) =>
{
// called when each frame encoded.
Console.WriteLine
(
@"Encord {0} bytes, frameType:{1}",
length,
frameType
);
// decode it to Bitmap again...
if (_isStart)
{
Dispatcher.Invoke
(
() =>
{
var bmp = decoder.Decode(data, length);
if (bmp != null)
{
Console.WriteLine(bmp.Size);
var bitmapImage = ZImageUtils.Bitmap2BitmapImage(bmp);
MImg.Source = bitmapImage;
bmp.Dispose();
}
}
);
}
}
);
new Thread
(
() =>
{
while (_isStart)
{
var screen = ZScreenUtils.GetScreen();
encoder.Encode(screen);
screen.Dispose();
Thread.Sleep(1000 / 10);
}
}
).Start();
}
}
}
