-
-
Notifications
You must be signed in to change notification settings - Fork 620
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #1555 from shogo4405/feature/stream-screen-object
Add StreamScreenObject.
- Loading branch information
Showing
3 changed files
with
73 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -554,7 +554,6 @@ extension IOStream: IOMixerDelegate { | |
| } | ||
| } | ||
| #endif | ||
|
|
||
| } | ||
|
|
||
| extension IOStream: IOTellyUnitDelegate { | ||
|
|
||
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| import AVFoundation | ||
| import CoreGraphics | ||
| import CoreImage | ||
| import Foundation | ||
|
|
||
| /// An object that manages offscreen rendering a streaming video track source. | ||
| public final class StreamScreenObject: ScreenObject, ChromaKeyProcessable { | ||
| public var chromaKeyColor: CGColor? | ||
|
|
||
| /// The video is displayed within a player layer’s bounds. | ||
| public var videoGravity: AVLayerVideoGravity = .resizeAspect { | ||
| didSet { | ||
| guard videoGravity != oldValue else { | ||
| return | ||
| } | ||
| invalidateLayout() | ||
| } | ||
| } | ||
|
|
||
| private var sampleBuffer: CMSampleBuffer? { | ||
| didSet { | ||
| guard sampleBuffer != oldValue else { | ||
| return | ||
| } | ||
| if sampleBuffer == nil { | ||
| return | ||
| } | ||
| invalidateLayout() | ||
| } | ||
| } | ||
|
|
||
| override public func makeBounds(_ size: CGSize) -> CGRect { | ||
| guard parent != nil, let image = sampleBuffer?.formatDescription?.dimensions.size else { | ||
| return super.makeBounds(size) | ||
| } | ||
| let bounds = super.makeBounds(size) | ||
| switch videoGravity { | ||
| case .resizeAspect: | ||
| let scale = min(bounds.size.width / image.width, bounds.size.height / image.height) | ||
| let scaleSize = CGSize(width: image.width * scale, height: image.height * scale) | ||
| return super.makeBounds(scaleSize) | ||
| case .resizeAspectFill: | ||
| return bounds | ||
| default: | ||
| return bounds | ||
| } | ||
| } | ||
|
|
||
| override public func makeImage(_ renderer: some ScreenRenderer) -> CGImage? { | ||
| guard let sampleBuffer, let pixelBuffer = sampleBuffer.imageBuffer else { | ||
| return nil | ||
| } | ||
| let image = CIImage(cvPixelBuffer: pixelBuffer).transformed(by: videoGravity.scale( | ||
| bounds.size, | ||
| image: pixelBuffer.size | ||
| )) | ||
| return renderer.context.createCGImage(image, from: videoGravity.region(bounds, image: image.extent)) | ||
| } | ||
| } | ||
|
|
||
| extension StreamScreenObject: IOStreamObserver { | ||
| // MARK: IOStreamObserver | ||
| public func stream(_ stream: IOStream, didOutput audio: AVAudioBuffer, when: AVAudioTime) { | ||
| } | ||
|
|
||
| public func stream(_ stream: IOStream, didOutput video: CMSampleBuffer) { | ||
| sampleBuffer = video | ||
| } | ||
| } |