railbird/react-native-vision-camera
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fix: Lock PixelBuffer for read in toArrayBuffer()

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This commit is contained in:
Marc Rousavy 2023-08-24 16:37:20 +02:00
parent d27581243d
commit e036b3162a
1 changed files with 4 additions and 1 deletions
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5
ios/Frame Processor/FrameHostObject.mm
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@ -79,7 +79,7 @@ jsi::Value FrameHostObject::get(jsi::Runtime& runtime, const jsi::PropNameID& pr
auto pixelBuffer = CMSampleBufferGetImageBuffer(frame.buffer); auto pixelBuffer = CMSampleBufferGetImageBuffer(frame.buffer);
auto bytesPerRow = CVPixelBufferGetBytesPerRow(pixelBuffer); auto bytesPerRow = CVPixelBufferGetBytesPerRow(pixelBuffer);
auto height = CVPixelBufferGetHeight(pixelBuffer); auto height = CVPixelBufferGetHeight(pixelBuffer);
auto buffer = (uint8_t*) CVPixelBufferGetBaseAddress(pixelBuffer);
auto arraySize = bytesPerRow * height; auto arraySize = bytesPerRow * height;
static constexpr auto ARRAYBUFFER_CACHE_PROP_NAME = "__frameArrayBufferCache"; static constexpr auto ARRAYBUFFER_CACHE_PROP_NAME = "__frameArrayBufferCache";
@ -96,7 +96,10 @@ jsi::Value FrameHostObject::get(jsi::Runtime& runtime, const jsi::PropNameID& pr
runtime.global().setProperty(runtime, ARRAYBUFFER_CACHE_PROP_NAME, arrayBuffer); runtime.global().setProperty(runtime, ARRAYBUFFER_CACHE_PROP_NAME, arrayBuffer);
} }
CVPixelBufferLockBaseAddress(pixelBuffer, kCVPixelBufferLock_ReadOnly);
auto buffer = (uint8_t*) CVPixelBufferGetBaseAddress(pixelBuffer);
arrayBuffer.updateUnsafe(runtime, buffer, arraySize); arrayBuffer.updateUnsafe(runtime, buffer, arraySize);
CVPixelBufferUnlockBaseAddress(pixelBuffer, kCVPixelBufferLock_ReadOnly);
return arrayBuffer; return arrayBuffer;
}; };