private void StartDecoding()
{
try
{
IsPlaying = true;
try
{
_readingTask.Start();
}
catch (ThreadStartException)
{
}
try
{
_readingTask.Wait();
}
catch (NullReferenceException)
{
}
catch (FFMpegException)
{
}
}
finally
{
IsPlaying = false;
}
}
private void Init()
{
_age = new FaceAge(AppId, AgeKey);
_gender = new FaceGender(AppId, GenderKey);
_traking = LocatorFactory.GetTrackingLocator(AppId, FtKey, _age, _gender) as FaceTracking;
_detection = LocatorFactory.GetDetectionLocator(AppId, FdKey) as FaceDetection;
_recognize = new FaceRecognize(AppId, FrKey);
_processor = new FaceProcessor(_traking, _recognize);
//init cache
if (Directory.Exists(FaceLibraryPath))
{
var files = Directory.GetFiles(FaceLibraryPath);
foreach (var file in files)
{
var info = new FileInfo(file);
_cache.Add(info.Name.Replace(info.Extension, ""), File.ReadAllBytes(file));
}
}
stride = width * pixelSize;
bufferSize = stride * height;
_pImage = Marshal.AllocHGlobal(bufferSize);
_image = new Bitmap(width, height, stride, PixelFormat.Format24bppRgb, _pImage);
var ffmpeg = new FFMpegConverter();
outputStream = new MemoryStream();
var setting =
new ConvertSettings
{
CustomOutputArgs = "-s 1920x1080", //根据业务需求-r参数可以调整，取决于摄像机的FPS
}; //-s 1920x1080 -q:v 2 -b:v 64k
//-an -r 15 -pix_fmt bgr24 -updatefirst 1
//task = ffmpeg.ConvertLiveMedia("rtsp://*****:*****@192.168.1.64:554/h264/ch1/main/av_stream", null,
// outputStream, Format.raw_video, setting);
/*
* USB摄像头捕获
* 通过ffmpeg可以捕获USB摄像，如下代码所示。
* 首先通过：ffmpeg -list_devices true -f dshow -i dummy命令，可以列出系统中存在的USB摄像设备（或通过控制面板的设备管理工具查看设备名称），例如在我电脑中叫USB2.0 PC CAMERA。
* 然后根据捕获的分辨率，修改视频图形信息，包括width和height，一般像素大小不用修改，如果要参考设备支持的分辨率，可以使用：
* ffmpeg -list_options true -f dshow -i video="USB2.0 PC CAMERA"命令
*/
task = ffmpeg.ConvertLiveMedia("video=Logitech HD Webcam C270", "dshow",
outputStream, Format.raw_video, setting);
task.OutputDataReceived += DataReceived;
task.Start();
_renderTask = new Task(Render);
_renderTask.Start();
}
private void Init()
{
_traking = LocatorFactory.GetTrackingLocator(AppId, FtKey) as FaceTracking;
_detection = LocatorFactory.GetDetectionLocator(AppId, FdKey) as FaceDetection;
_recognize = new FaceRecognize(AppId, FrKey);
_processor = new FaceProcessor(_traking, _recognize);
//init cache
if (Directory.Exists(FaceLibraryPath))
{
var files = Directory.GetFiles(FaceLibraryPath);
foreach (var file in files)
{
var info = new FileInfo(file);
_cache.Add(info.Name.Replace(info.Extension, ""), File.ReadAllBytes(file));
}
}
_pImage = Marshal.AllocHGlobal(1920 * 1080 * 3);
_image = new Bitmap(1920, 1080, 1920 * 3, PixelFormat.Format24bppRgb, _pImage);
var ffmpeg = new FFMpegConverter();
outputStream = new MemoryStream();
var setting =
new ConvertSettings
{
CustomOutputArgs = "-an -r 15 -pix_fmt bgr24 -updatefirst 1" //根据业务需求-r参数可以调整，取决于摄像机的FPS
}; //-s 1920x1080 -q:v 2 -b:v 64k
task = ffmpeg.ConvertLiveMedia("rtsp://*****:*****@192.168.1.64:554/h264/ch1/main/av_stream", null,
outputStream, Format.raw_video, setting);
task.OutputDataReceived += DataReceived;
task.Start();
_renderTask = new Task(Render);
_renderTask.Start();
}
private void stream_Click(object x, EventArgs y)
{
// Get the IDeckLinkOutput interface
var input = (IDeckLinkInput)_DeckLink;
var output = (IDeckLinkOutput)_DeckLink;
if (_Streaming)
{
KillStream();
}
else
{
IDeckLinkDisplayModeIterator displayIterator;
input.GetDisplayModeIterator(out displayIterator);
var supportedModes = new List <IDeckLinkDisplayMode>();
input.SetCallback(this);
input.SetScreenPreviewCallback(this);
var flags = _BMDVideoInputFlags.bmdVideoInputFlagDefault | _BMDVideoInputFlags.bmdVideoInputEnableFormatDetection;
var format = _BMDPixelFormat.bmdFormat8BitYUV;
var display = _BMDDisplayMode.bmdModeHD1080i50;
_BMDDisplayModeSupport support;
IDeckLinkDisplayMode tmp;
input.DoesSupportVideoMode(display, format, flags, out support, out tmp);
if (support != _BMDDisplayModeSupport.bmdDisplayModeSupported)
{
throw new Exception("display mode not working: " + support);
}
if (writeRaw.Checked)
{
_VideoWriter = new BinaryWriter(File.Open(_RawVideoFile, FileMode.OpenOrCreate));
_AudioWriter = new BinaryWriter(File.Open(_RawAudioFile, FileMode.OpenOrCreate));
}
if (writeEncoded.Checked)
{
_EncodedStream = new FileStream(_EncodedVideoFile, FileMode.Create, FileAccess.Write);
_EncodeTask = _VideoConverter.ConvertLiveMedia(
"rawvideo",
_EncodedStream,
"h264",
new ConvertSettings()
{
CustomInputArgs = " -pix_fmt uyvy422 -video_size 1920x1080 -framerate 25",
});
_EncodeTask.Start();
}
input.EnableVideoInput(display, format, flags);
input.EnableAudioInput(_AudioSampleRate, _AudioSampleType, _AudioChannels);
input.StartStreams();
stream.Text = "Kill";
_Streaming = true;
}
}
