How can I setup correctly AVSampleBufferDisplayLayer for video display when I have input picture format kCVPixelFormatType_32BGRA?
Currently video i visible in simulator, but not iPhone, miss I something?
Render code:
var pixelBuffer: CVPixelBuffer?
let attrs: [String: Any] = [
kCVPixelBufferPixelFormatTypeKey as String: kCVPixelFormatType_32BGRA,
kCVPixelBufferWidthKey as String: width,
kCVPixelBufferHeightKey as String: height,
kCVPixelBufferBytesPerRowAlignmentKey as String: width * 4,
kCVPixelBufferIOSurfacePropertiesKey as String: [:]
]
let status = CVPixelBufferCreateWithBytes(
nil,
width,
height,
kCVPixelFormatType_32BGRA,
img,
width * 4,
nil,
nil,
attrs as CFDictionary,
&pixelBuffer
)
guard status == kCVReturnSuccess, let pb = pixelBuffer else { return }
var formatDesc: CMVideoFormatDescription?
CMVideoFormatDescriptionCreateForImageBuffer(
allocator: nil,
imageBuffer: pb,
formatDescriptionOut: &formatDesc
)
guard let format = formatDesc else { return }
var timingInfo = CMSampleTimingInfo(
duration: .invalid,
presentationTimeStamp: currentTime,
decodeTimeStamp: .invalid
)
var sampleBuffer: CMSampleBuffer?
CMSampleBufferCreateForImageBuffer(
allocator: kCFAllocatorDefault,
imageBuffer: pb,
dataReady: true,
makeDataReadyCallback: nil,
refcon: nil,
formatDescription: format,
sampleTiming: &timingInfo,
sampleBufferOut: &sampleBuffer
)
if let sb = sampleBuffer {
if CMSampleBufferGetPresentationTimeStamp(sb) == .invalid {
print("Invalid video timestamp")
}
if (displayLayer.status == .failed) {
displayLayer.flush()
}
DispatchQueue.main.async { [weak self] in
guard let self = self else {
print("Lost reference to self drawing")
return
}
displayLayer.enqueue(sb)
}
frameIndex += 1
}
