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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
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