internal void Start()
{
this.videoProvider = VideoProviderFactory.Create(this.region);
this.actions = this.task.Actions.Select(a => {
try {
// set options if needed
if (a.Options != null &&
Application.PluginManager.Actions.First(a2 => a2.Type.Name == a.ActionType).Configurable)
{
// create uninitialized instance
var action = FormatterServices.GetSafeUninitializedObject(
Type.GetType(a.ActionType, true, true) ??
throw new InvalidOperationException(Resources.TaskHelper_NoSuchActionMessage)) as Action;
// set options property
a.GetType().GetProperty("Options")?.SetValue(action, a.Options);
// call parameterless constructor
action?.GetType()
.GetConstructor(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
Type.EmptyTypes,
null)
?.Invoke(action, new object[] { this.codec });
}
return(Activator.CreateInstance(Type.GetType(a.ActionType) ??
throw new InvalidOperationException(
Resources.TaskHelper_NoSuchActionMessage),
this.codec) as Action);
} catch (Exception exception) {
Log.WriteLine(LogLevel.Warning, $"error initializing action {a.ActionType}: {exception}");
// create dummy action for displaying error
var action = new Action(this.codec);
action.SetStatus(ActionStatus.Failed,
new Exception(Resources.TaskHelper_ActionInitializationFailedCaption, exception));
return(action);
}
})
.Where(a => a != null)
.ToList();
this.stream = new MultiStream();
this.actions.ForEach(a => {
this.stream.Add(a);
Application.ActionManager.AddAction(a);
});
if (this.codec is ID3D11Codec acceleratedCodec &&
this.videoProvider is ID3D11VideoProvider acceleratedVideoProvider &&
acceleratedVideoProvider.SurfacePointer != IntPtr.Zero)
{
acceleratedCodec.SurfacePointer = acceleratedVideoProvider.SurfacePointer;
this.isAcceleratedEncoding = true;
Log.WriteLine(LogLevel.Informational, "performing hardware-assisted encoding");
}
this.codec?.Initialize(this.videoProvider.CaptureBounds.Size, this.stream);
this.recordingThread = new Thread(Record)
{
Priority = ThreadPriority.Highest
};
this.recordingThread.SetApartmentState(ApartmentState.MTA);
this.recordingThread.Start();
State = RecordingState.Recording;
Application.TrayIcon.AnimateIndicator(IndicatorStatus.Recording, 500);
}
/// <summary>
/// Captures an still image, encodes it and executes each bound action.
/// </summary>
/// <param name="task">Task to be run.</param>
/// <param name="rect">Rectangle to be captured.</param>
/// <returns>An enumeration of the <see cref="Common.Action" />s running.</returns>
private static void StartScreenshotTask(Task task, Rectangle rect)
{
IBitmapVideoProvider provider = null;
BitmapData bmpData = default;
Bitmap thumbnail;
try {
// create video provider
provider = VideoProviderFactory.Create(rect);
// acquire frame and lock frame bits for reading so that codecs can work over it
provider.AcquireFrame();
bmpData = provider.LockFrameBitmap();
// generate thumbnail
thumbnail = new Bitmap(bmpData.Width, bmpData.Height);
// TODO: debug this
System.Drawing.Imaging.BitmapData data = thumbnail.LockBits(new Rectangle(Point.Empty, thumbnail.Size),
ImageLockMode.WriteOnly,
PixelFormat.Format32bppArgb);
Utilities.CopyMemory(data.Scan0, bmpData.Scan0, bmpData.Height * bmpData.Stride);
thumbnail.UnlockBits(data);
using (var tempBmp = new Bitmap(4 * (Resources.NeutralResultOverlay.Width - 48),
4 * (Resources.NeutralResultOverlay.Height - 48))) {
using (Graphics graphics = Graphics.FromImage(tempBmp)) {
graphics.DrawImage(thumbnail,
new Rectangle(Point.Empty, tempBmp.Size),
new Rectangle(Point.Empty, thumbnail.Size),
GraphicsUnit.Pixel);
}
thumbnail.Dispose();
thumbnail = tempBmp.Clone() as Bitmap;
}
} catch (Exception exception) {
Log.WriteLine(LogLevel.Error, $"video provider exception: ${exception}");
if (bmpData.Scan0 == default)
{
provider?.UnlockFrameBitmap(bmpData);
}
provider?.ReleaseFrame();
provider?.Dispose();
throw new TaskException(Resources.TaskHelper_CaptureFailedCaption,
Resources.TaskHelper_CaptureFailedContent,
exception);
}
// initialize codec
IStillImageCodec codec;
try {
// get uninitialized object in case we need to set Options property first
codec = Activator.CreateInstance(Type.GetType(task.Codec.CodecType, true, true) ??
throw new InvalidOperationException("No such codec loaded.")) as
IStillImageCodec;
if (task.Codec.Options is Dictionary <string, object> userOptions &&
codec is IHasOptions configurableObject)
{
// set user options
configurableObject.Options = configurableObject.Options ?? new Dictionary <string, object>();
foreach (KeyValuePair <string, object> pair in userOptions)
{
configurableObject.Options[pair.Key] = pair.Value;
}
}
} catch (Exception exception) {
Log.WriteLine(LogLevel.Error, $"error initializing codec {task.Codec.CodecType}: {exception}");
throw new TaskException(Resources.TaskHelper_EncodingFailedCaption,
Resources.TaskHelper_EncodingInitializationFailedContent,
exception);
}
// create temporary memory stream for holding the encoded data
var stream = new MemoryStream();
try {
// encode the still image
codec?.Encode(bmpData, stream);
} catch (Exception exception) {
Log.WriteLine(LogLevel.Error, $"error encoding still image: {exception}");
stream.Dispose();
provider.UnlockFrameBitmap(bmpData);
provider.ReleaseFrame();
provider.Dispose();
thumbnail?.Dispose();
throw new TaskException(Resources.TaskHelper_EncodingFailedCaption,
Resources.TaskHelper_EncodingFailedContent,
exception);
}
List <Action> actions = task.Actions.Select(a => {
try {
// set options if needed
if (a.Options != null &&
Application.PluginManager.Actions.First(a2 => a2.Type.Name == a.ActionType).Configurable)
{
// create uninitialized instance
var action = FormatterServices.GetSafeUninitializedObject(
Type.GetType(a.ActionType, true, true) ??
throw new InvalidOperationException(Resources.TaskHelper_NoSuchActionMessage)) as Action;
// set options property
a.GetType().GetProperty("Options")?.SetValue(action, a.Options);
// call parameterless constructor
action?.GetType()
.GetConstructor(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
Type.EmptyTypes,
null)
?.Invoke(action, new object[] { codec });
}
return(Activator.CreateInstance(Type.GetType(a.ActionType) ??
throw new InvalidOperationException(
Resources.TaskHelper_NoSuchActionMessage),
codec) as Action);
} catch (Exception exception) {
Log.WriteLine(LogLevel.Warning, $"error initializing action {a.ActionType}: {exception}");
// create dummy action for displaying error
var action = new Action(codec);
action.SetStatus(ActionStatus.Failed,
new Exception(Resources.TaskHelper_ActionInitializationFailedCaption, exception));
return(action);
}
})
.Where(a => a != null)
.ToList();
actions.ForEach(a => {
Application.ActionManager.AddAction(a);
void Release()
{
if (a == actions.Last())
{
// this was the last action, release the temporary stream. It's not disposed unless the last stream
// fails to initialize
// ReSharper disable once AccessToDisposedClosure
Log.WriteLine(LogLevel.Debug, "releasing resources");
stream.Dispose();
provider.UnlockFrameBitmap(bmpData);
provider.ReleaseFrame();
provider.Dispose();
GC.Collect();
}
}
// set preview bitmap
a.Thumbnail = thumbnail;
try {
if (a is IFiltered filteredAction)
{
if (!filteredAction.GetMediaAcceptance(task.TaskType, codec, task.Codec.Options as ICodecParameters))
{
Log.WriteLine(LogLevel.Warning, "media filter did not accept this capture");
throw new Exception(Resources.TaskHelper_UnsupportedMediaMessage);
}
}
if (a is IPreBitmapEncodingAction preEncodingAction)
{
// set bitmap data instead of copying to the stream
Log.WriteLine(LogLevel.Debug, $"setting bitmap data for {a.GetType().Name}");
preEncodingAction.SetBitmapData(bmpData);
Release();
a.SetStatus(ActionStatus.Success);
Log.WriteLine(LogLevel.Informational, $"action {a.GetType().Name} is done");
}
else
{
// copy data to the action stream
Log.WriteLine(LogLevel.Debug, $"writing {stream.Length} bytes to {a.GetType().Name}");
a.SetLength(stream.Length);
new Thread(() => {
using (var target = new BufferedStream(a, a.BufferSize)) { stream.WriteTo(target); }
a.Flush();
a.Dispose();
Release();
Log.WriteLine(LogLevel.Informational, $"action {a.GetType().Name} is ready");
}).Start();
}
} catch (Exception exception) {
Release();
Log.WriteLine(LogLevel.Warning, $"error copying to action stream {a.GetType().Name}: {exception}");
a.SetStatus(ActionStatus.Failed, new Exception(Resources.TaskHelper_ActionFailedCaption, exception));
}
});
}