private void ProcessVideoComposition(AVMutableVideoComposition videoComposition)
{
var stages = new List <APLVideoCompositionStageInfo> ();
foreach (AVVideoCompositionInstruction instruction in videoComposition.Instructions)
{
var stage = new APLVideoCompositionStageInfo();
stage.TimeRange = instruction.TimeRange;
var rampsDictionary = new Dictionary <string, List <CGPoint> > ();
var layerNames = new List <string> ();
foreach (AVVideoCompositionLayerInstruction layerInstruction in instruction.LayerInstructions)
{
var ramp = new List <CGPoint> ();
CMTime startTime = CMTime.Zero;
float startOpacity = 1f;
float endOpacity = 1f;
CMTimeRange timeRange = new CMTimeRange();
while (layerInstruction.GetOpacityRamp(startTime, ref startOpacity, ref endOpacity, ref timeRange))
{
if (CMTime.Compare(startTime, CMTime.Zero) == 0 &&
CMTime.Compare(timeRange.Start, CMTime.Zero) == 1)
{
ramp.Add(new CGPoint((float)timeRange.Start.Seconds, startOpacity));
}
CMTime endTime = CMTime.Add(timeRange.Start, timeRange.Duration);
ramp.Add(new CGPoint((float)endTime.Seconds, endOpacity));
startTime = CMTime.Add(timeRange.Start, timeRange.Duration);
}
NSString name = new NSString(layerInstruction.TrackID.ToString());
layerNames.Add(name);
rampsDictionary [name] = ramp;
}
if (layerNames.Count > 1)
{
stage.OpacityRamps = rampsDictionary;
}
stage.LayerNames = layerNames;
stages.Add(stage);
}
videoCompositionStages = stages;
}
private void ProcessVideoComposition (AVMutableVideoComposition videoComposition)
{
var stages = new List<APLVideoCompositionStageInfo> ();
foreach (AVVideoCompositionInstruction instruction in videoComposition.Instructions) {
var stage = new APLVideoCompositionStageInfo ();
stage.TimeRange = instruction.TimeRange;
var rampsDictionary = new Dictionary<string, List<CGPoint>> ();
var layerNames = new List<string> ();
foreach (AVVideoCompositionLayerInstruction layerInstruction in instruction.LayerInstructions) {
var ramp = new List<CGPoint> ();
CMTime startTime = CMTime.Zero;
float startOpacity = 1f;
float endOpacity = 1f;
CMTimeRange timeRange = new CMTimeRange ();
while (layerInstruction.GetOpacityRamp (startTime, ref startOpacity, ref endOpacity, ref timeRange)) {
if (CMTime.Compare (startTime, CMTime.Zero) == 0 &&
CMTime.Compare (timeRange.Start, CMTime.Zero) == 1) {
ramp.Add (new CGPoint ((float)timeRange.Start.Seconds, startOpacity));
}
CMTime endTime = CMTime.Add (timeRange.Start, timeRange.Duration);
ramp.Add (new CGPoint ((float)endTime.Seconds, endOpacity));
startTime = CMTime.Add (timeRange.Start, timeRange.Duration);
}
NSString name = new NSString (layerInstruction.TrackID.ToString ());
layerNames.Add (name);
rampsDictionary [name] = ramp;
}
if (layerNames.Count > 1) {
stage.OpacityRamps = rampsDictionary;
}
stage.LayerNames = layerNames;
stages.Add (stage);
}
videoCompositionStages = stages;
}