避免两次调用

app/src/main/cpp/camera2/ndkcamera.cpp

@@ -164,6 +164,7 @@ NdkCamera::NdkCamera(int32_t width, int32_t height, const NdkCamera::CAMERA_PARA
 	mHeight = height;
 
 	mCaptureTriggered = false;
+	mCaptureDispatched = false;
 
 	maxFrameDuration = 0;
 	afSupported = false;
@@ -1479,15 +1480,21 @@ void NdkCamera::onImageAvailable(AImageReader* reader)
 
 			std::shared_ptr<ACameraMetadata> result;
 			bool captureCompleted = false;
+			bool captureDispatchable = false;
 			m_locker.lock();
 			if (!mCaptureResults.empty())
 			{
 				captureCompleted = true;
 				result = mCaptureResults[0];
 			}
+			if (captureCompleted && !mCaptureDispatched)
+			{
+				mCaptureDispatched = true;
+				captureDispatchable = true;
+			}
 			m_locker.unlock();
 
-			if (captureCompleted)
+			if (captureCompleted && captureDispatchable)
 			{
 				onOneCapture(mCharacteristics, result, mFinalLdr, ts - m_startTime, mOneFrame);
 			}
@@ -1519,17 +1526,23 @@ void NdkCamera::onImageAvailable(AImageReader* reader)
 			}
 
 			bool captureCompleted = false;
+			bool captureDispatchable = false;
+
 			size_t expectedTimes = mCaptureRequests.size() - 1;
 			m_locker.lock();
 			captureCompleted = mCaptureResults.size() >= expectedTimes && mCaptureFrames.size() >= expectedTimes;
+			if (captureCompleted && !mCaptureDispatched)
+			{
+				mCaptureDispatched = true;
+				captureDispatchable = true;
+			}
 			m_locker.unlock();
 
-			if (captureCompleted)
+			if (captureCompleted && captureDispatchable)
 			{
                 FireBurstCapture();
 			}
 		}
-
 	}
 }
 
@@ -1914,6 +1927,7 @@ void NdkCamera::onCaptureCompleted(ACameraCaptureSession* session, ACaptureReque
 
         ACameraMetadata* pCopy = ACameraMetadata_copy(result);
         bool captureCompleted = false;
+		bool captureDispatchable = false;
 		size_t expectedTimes = mCaptureRequests.size() - 1;
 
         std::shared_ptr<ACameraMetadata> captureResult(pCopy, ACameraMetadata_free);
@@ -1922,9 +1936,14 @@ void NdkCamera::onCaptureCompleted(ACameraCaptureSession* session, ACaptureReque
 			m_locker.lock();
 			mCaptureResults.push_back(captureResult);
 			captureCompleted = !mOneFrame.empty();
+			if (captureCompleted && !mCaptureDispatched)
+			{
+				mCaptureDispatched = true;
+				captureDispatchable = true;
+			}
 			m_locker.unlock();
 
-			if (captureCompleted)
+			if (captureCompleted && captureDispatchable)
 			{
 				onOneCapture(mCharacteristics, captureResult, mFinalLdr, ts - m_startTime, mOneFrame);
 			}
@@ -1934,9 +1953,14 @@ void NdkCamera::onCaptureCompleted(ACameraCaptureSession* session, ACaptureReque
 			m_locker.lock();
 			mCaptureResults.push_back(captureResult);
 			captureCompleted = mCaptureFrames.size() >= expectedTimes && mCaptureResults.size() >= expectedTimes;
+			if (captureCompleted && !mCaptureDispatched)
+			{
+				mCaptureDispatched = true;
+				captureDispatchable = true;
+			}
 			m_locker.unlock();
 
-			if (captureCompleted)
+			if (captureCompleted && captureDispatchable)
 			{
                 FireBurstCapture();
 			}

app/src/main/cpp/camera2/ndkcamera.h

@@ -232,6 +232,7 @@ protected:
     int32_t maxRegions[3];
 
     bool mCaptureTriggered;
+    bool mCaptureDispatched;
 
     CAPTURE_RESULT mResult;
     unsigned long long m_startTime;