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feat: Make Frame Processors work on API <29 (#2041)

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Marc Rousavy 2023-10-19 11:47:30 +02:00 committed by GitHub
parent da25aa1c1f
commit 217461ff5d
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1 changed files with 19 additions and 8 deletions
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27
package/android/src/main/java/com/mrousavy/camera/core/VideoPipeline.kt
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@ -70,6 +70,9 @@ class VideoPipeline(
private var imageReader: ImageReader? = null private var imageReader: ImageReader? = null
private var imageWriter: ImageWriter? = null private var imageWriter: ImageWriter? = null
private val hasOutputs: Boolean
get() = recordingSession != null
init { init {
Log.i( Log.i(
TAG, TAG,
@ -84,15 +87,20 @@ class VideoPipeline(
if (enableFrameProcessor) { if (enableFrameProcessor) {
// User has passed a Frame Processor, we need to route images through ImageReader so we can get // User has passed a Frame Processor, we need to route images through ImageReader so we can get
// CPU access to the Frames, then send them to the OpenGL pipeline later. // CPU access to the Frames, then send them to the OpenGL pipeline later.
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
throw FrameProcessorsUnavailableError("Frame Processors require API 29 or higher. (Q)")
}
// GPU_SAMPLED because we redirect to OpenGL, CPU_READ because we read pixels before that.
val usage = HardwareBuffer.USAGE_GPU_SAMPLED_IMAGE or HardwareBuffer.USAGE_CPU_READ_OFTEN
val format = getImageReaderFormat() val format = getImageReaderFormat()
Log.i(TAG, "Using ImageReader round-trip (format: #$format)") Log.i(TAG, "Using ImageReader round-trip (format: #$format)")
imageWriter = ImageWriter.newInstance(glSurface, MAX_IMAGES, format)
imageReader = ImageReader.newInstance(width, height, format, MAX_IMAGES, usage) if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
Log.i(TAG, "Using API 29 for GPU ImageReader...")
// GPU_SAMPLED because we redirect to OpenGL, CPU_READ because we read pixels before that.
val usage = HardwareBuffer.USAGE_GPU_SAMPLED_IMAGE or HardwareBuffer.USAGE_CPU_READ_OFTEN
imageReader = ImageReader.newInstance(width, height, format, MAX_IMAGES, usage)
imageWriter = ImageWriter.newInstance(glSurface, MAX_IMAGES, format)
} else {
Log.i(TAG, "Using legacy API for CPU ImageReader...")
imageReader = ImageReader.newInstance(width, height, format, MAX_IMAGES)
imageWriter = ImageWriter.newInstance(glSurface, MAX_IMAGES)
}
imageReader!!.setOnImageAvailableListener({ reader -> imageReader!!.setOnImageAvailableListener({ reader ->
Log.i(TAG, "ImageReader::onImageAvailable!") Log.i(TAG, "ImageReader::onImageAvailable!")
val image = reader.acquireNextImage() ?: return@setOnImageAvailableListener val image = reader.acquireNextImage() ?: return@setOnImageAvailableListener
@ -104,7 +112,10 @@ class VideoPipeline(
frame.incrementRefCount() frame.incrementRefCount()
frameProcessor?.call(frame) frameProcessor?.call(frame)
imageWriter!!.queueInputImage(image) if (hasOutputs) {
// If we have outputs (e.g. a RecordingSession), pass the frame along to the OpenGL pipeline
imageWriter!!.queueInputImage(image)
}
frame.decrementRefCount() frame.decrementRefCount()
}, CameraQueues.videoQueue.handler) }, CameraQueues.videoQueue.handler)