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在这篇blog之前#xff0c;我提到了wpf下播放RTMP和RTSP渲染的两种方式#xff0c;一种是通过控件模式#xff0c;另外一种是直接原生RTSP、RTMP播放模块#xff0c;回调rgb#xff0c;然后在wpf下渲染#xff0c;本文就两种方式做个说明。
技术实现
以大牛直…技术背景
在这篇blog之前我提到了wpf下播放RTMP和RTSP渲染的两种方式一种是通过控件模式另外一种是直接原生RTSP、RTMP播放模块回调rgb然后在wpf下渲染本文就两种方式做个说明。
技术实现
以大牛直播SDK的Windows平台SmartPlayer为例我们先说第一种通过控件模式控件模式非常简单可以用picturebox在MainWindow.xaml 做以下设置 WindowsFormsHost HorizontalAlignmentLeft Height338 Margin10,10,0,0 VerticalAlignmentTop Width480 BackgroundBlackwf:PictureBox x:NameRealPlayWnd/wf:PictureBox/WindowsFormsHost
StartPlayer的时候调NT_SP_SetRenderWindow把handler设置下去即可如果需要硬解码可以先做硬解码检测检测支持的话设置硬解码模式。 /** nt_player_wrapper.cs* Author: daniusdk.com*/public bool StartPlay(String url, bool is_rtsp_tcp_mode, bool is_mute, bool is_hardware_decorder){if ( is_playing_ )return false;if (!OpenPlayerHandle(url, is_rtsp_tcp_mode, is_mute, is_hardware_decorder))return false;//video resolution callbackvideo_size_call_back_ new SP_SDKVideoSizeCallBack(SP_SDKVideoSizeHandle);NTSmartPlayerSDK.NT_SP_SetVideoSizeCallBack(player_handle_, IntPtr.Zero, video_size_call_back_);if (render_wnd_ ! null){NTSmartPlayerSDK.NT_SP_SetRenderWindow(player_handle_, render_wnd_.Handle);NTSmartPlayerSDK.NT_SP_SetRenderScaleMode(player_handle_, 1);}else if(image_wnd_ ! null){//video frame callback (YUV/RGB)//format请参见 NT_SP_E_VIDEO_FRAME_FORMAT如需回调YUV请设置为 NT_SP_E_VIDEO_FRAME_FROMAT_I420video_frame_call_back_ new SP_SDKVideoFrameCallBack(SetVideoFrameCallBack);NTSmartPlayerSDK.NT_SP_SetVideoFrameCallBack(player_handle_, (Int32)NT.NTSmartPlayerDefine.NT_SP_E_VIDEO_FRAME_FORMAT.NT_SP_E_VIDEO_FRAME_FORMAT_RGB32, IntPtr.Zero, video_frame_call_back_);}uint ret NTSmartPlayerSDK.NT_SP_StartPlay(player_handle_);if ( NTBaseCodeDefine.NT_ERC_OK ! ret ){NTSmartPlayerSDK.NT_SP_Close(player_handle_);player_handle_ IntPtr.Zero;return false;}is_playing_ true;return true;}
另外一种模式是通过回调rgb然后在image上渲染回调rgb在StartPlay()已有说明。设置回调选择NT_SP_E_VIDEO_FRAME_FORMAT_RGB32格式然后处理回调数据即可。
video_frame_call_back_ new SP_SDKVideoFrameCallBack(SetVideoFrameCallBack);NTSmartPlayerSDK.NT_SP_SetVideoFrameCallBack(player_handle_, (Int32)NT.NTSmartPlayerDefine.NT_SP_E_VIDEO_FRAME_FORMAT.NT_SP_E_VIDEO_FRAME_FORMAT_RGB32, IntPtr.Zero, video_frame_call_back_);处理rgb数据回调的地方拿到bitmap_source数据设给image.Source即可 public void SDKVideoFrameCallBack(IntPtr handle, UInt32 status, BitmapSource bitmap_source){if (image_wnd_ null)return;if (player_handle_ IntPtr.Zero || !is_playing_ || bitmap_source null)return;image_wnd_.Source bitmap_source;}
为了便于比较我们做了个四窗口的demo展示一路2560*1440一路1920*1080上面是通过picturebox控件直接设置handle到原生模块播放第三第四个窗口知通过image自己绘制 具体实现如下 /** MainWindow.xaml.cs* Author: daniusdk.com*/public MainWindow(){InitializeComponent();if (!InitSDK())return;UIDispatcher Dispatcher.CurrentDispatcher;player1_ new nt_player_wrapper(RealPlayWnd, null, UIDispatcher);player1_.EventGetPlayerEventMsg new DelGetPlayerEventMsg(GetPlayerEventMsgInfo);player1_.EventGetVideoSize new DelGetVideoSize(GetVideoSize);player2_ new nt_player_wrapper(RealPlayWnd1, null, UIDispatcher);player2_.EventGetPlayerEventMsg new DelGetPlayerEventMsg(GetPlayerEventMsgInfo);player2_.EventGetVideoSize new DelGetVideoSize(GetVideoSize);player3_ new nt_player_wrapper(null, image_render, UIDispatcher);player3_.EventGetPlayerEventMsg new DelGetPlayerEventMsg(GetPlayerEventMsgInfo);player3_.EventGetVideoSize new DelGetVideoSize(GetVideoSize);player4_ new nt_player_wrapper(null, image_render1, UIDispatcher);player4_.EventGetPlayerEventMsg new DelGetPlayerEventMsg(GetPlayerEventMsgInfo);player4_.EventGetVideoSize new DelGetVideoSize(GetVideoSize);}private bool InitSDK(){if (!is_player_sdk_init_){UInt32 isPlayerInited NT.NTSmartPlayerSDK.NT_SP_Init(0, IntPtr.Zero);if (isPlayerInited ! 0){MessageBox.Show(调用NT_SP_Init失败..);return false;}is_player_sdk_init_ true;}return true;}private void Button_Click_1(object sender, RoutedEventArgs e){if (!player1_.IsPlaying()){player1_.SetBuffer(0);bool is_mute true;bool is_hardware_decoder true;if (!player1_.StartPlay(rtsp://admin:daniulive12345192.168.0.120:554/h264/ch1/main/av_stream, false, is_mute, is_hardware_decoder))return;btn_playback1.Content 停止播放;}else{player1_.StopPlay();btn_playback1.Content 开始播放;}}private void Button_Click_2(object sender, RoutedEventArgs e){if (!player2_.IsPlaying()){player2_.SetBuffer(0);bool is_mute true;bool is_hardware_decoder true;if (!player2_.StartPlay(rtsp://admin:admin123456192.168.0.121:554/cam/realmonitor?channel1subtype0, false, is_mute, is_hardware_decoder))return;btn_playback2.Content 停止播放;}else{player2_.StopPlay();btn_playback2.Content 开始播放;}}private void Button_Click_3(object sender, RoutedEventArgs e){if (!player3_.IsPlaying()){player3_.SetBuffer(0);bool is_mute true;bool is_hardware_decoder true;if (!player3_.StartPlay(rtsp://admin:daniulive12345192.168.0.120:554/h264/ch1/main/av_stream, false, is_mute, is_hardware_decoder))return;btn_playback3.Content 停止播放;}else{player3_.StopPlay();btn_playback3.Content 开始播放;}}private void Button_Click_4(object sender, RoutedEventArgs e){if (!player4_.IsPlaying()){player4_.SetBuffer(0);bool is_mute true;bool is_hardware_decoder true;if (!player4_.StartPlay(rtsp://admin:admin123456192.168.0.121:554/cam/realmonitor?channel1subtype0, false, is_mute, is_hardware_decoder))return;btn_playback4.Content 停止播放;}else{player4_.StopPlay();btn_playback4.Content 开始播放;}}
关闭窗口的时候记得调用停止播放逻辑所有实例关闭后调用NT_SP_UnInit() protected override void OnClosing(System.ComponentModel.CancelEventArgs e){if (MessageBox.Show(确定要关闭窗口吗, 确认, MessageBoxButton.YesNo) ! MessageBoxResult.Yes){// 如果用户选择“否”取消关闭e.Cancel true;}if (player1_.IsPlaying()){player1_.StopPlay();}player1_.Dispose();if (player2_.IsPlaying()){player2_.StopPlay();}player2_.Dispose();if (player3_.IsPlaying()){player3_.StopPlay();}player3_.Dispose();if (player4_.IsPlaying()){player4_.StopPlay();}player4_.Dispose();if (is_player_sdk_init_){NTSmartPlayerSDK.NT_SP_UnInit();is_player_sdk_init_ false;} base.OnClosing(e);} 总结
wpf下实现低延迟的RTSP或RTMP播放以上两种模式都可以尝试看都不麻烦如果想更灵活可以采用回调rgb然后自己绘制的模式如果想更省事那么直接picturebox控件handle设置下去底层自己绘制以上是大概的实现逻辑感兴趣的开发者或有这方面技术诉求的有问题可以单独跟我沟通。
