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+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+/**
+ * This class simulates a hardware JPEG compressor. It receives image buffers
+ * in RGBA_8888 format, processes them in a worker thread, and then pushes them
+ * out to their destination stream.
+ */
+
+#ifndef ANDROID_SERVERS_CAMERA_JPEGCOMPRESSOR_H
+#define ANDROID_SERVERS_CAMERA_JPEGCOMPRESSOR_H
+
+#include "utils/Thread.h"
+#include "utils/Mutex.h"
+#include "utils/Timers.h"
+#include "utils/Vector.h"
+//#include "Base.h"
+#include <stdio.h>
+#include <gui/CpuConsumer.h>
+
+extern "C" {
+#include <jpeglib.h>
+}
+
+
+namespace android {
+namespace camera2 {
+
+class JpegCompressor: private Thread, public virtual RefBase {
+ public:
+
+ JpegCompressor();
+ ~JpegCompressor();
+
+ // Start compressing COMPRESSED format buffers; JpegCompressor takes
+ // ownership of the Buffers vector.
+ status_t start(Vector<CpuConsumer::LockedBuffer*> buffers,
+ nsecs_t captureTime);
+
+ status_t cancel();
+
+ bool isBusy();
+ bool isStreamInUse(uint32_t id);
+
+ bool waitForDone(nsecs_t timeout);
+
+ // TODO: Measure this
+ static const size_t kMaxJpegSize = 300000;
+
+ private:
+ Mutex mBusyMutex;
+ Mutex mMutex;
+ bool mIsBusy;
+ Condition mDone;
+ nsecs_t mCaptureTime;
+
+ Vector<CpuConsumer::LockedBuffer*> mBuffers;
+ CpuConsumer::LockedBuffer *mJpegBuffer;
+ CpuConsumer::LockedBuffer *mAuxBuffer;
+ bool mFoundJpeg, mFoundAux;
+
+ jpeg_compress_struct mCInfo;
+
+ struct JpegError : public jpeg_error_mgr {
+ JpegCompressor *parent;
+ };
+ j_common_ptr mJpegErrorInfo;
+
+ struct JpegDestination : public jpeg_destination_mgr {
+ JpegCompressor *parent;
+ };
+
+ static void jpegErrorHandler(j_common_ptr cinfo);
+
+ static void jpegInitDestination(j_compress_ptr cinfo);
+ static boolean jpegEmptyOutputBuffer(j_compress_ptr cinfo);
+ static void jpegTermDestination(j_compress_ptr cinfo);
+
+ bool checkError(const char *msg);
+ void cleanUp();
+
+ /**
+ * Inherited Thread virtual overrides
+ */
+ private:
+ virtual status_t readyToRun();
+ virtual bool threadLoop();
+};
+
+}; // namespace camera2
+}; // namespace android
+
+#endif