e26e64f2de
Required to support Camera.takePicture() Bug: 6243944 Change-Id: I60d7a161a7037c25428eac5a6f9327aff47da584
110 lines
2.5 KiB
C++
110 lines
2.5 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* This class simulates a hardware JPEG compressor. It receives image buffers
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* in RGBA_8888 format, processes them in a worker thread, and then pushes them
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* out to their destination stream.
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*/
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#ifndef HW_EMULATOR_CAMERA2_JPEG_H
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#define HW_EMULATOR_CAMERA2_JPEG_H
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#include "utils/Thread.h"
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#include "utils/Mutex.h"
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#include "utils/Timers.h"
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#include "Base.h"
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#include <stdio.h>
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extern "C" {
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#include <jpeglib.h>
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}
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namespace android {
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class EmulatedFakeCamera2;
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class JpegCompressor: private Thread, public virtual RefBase {
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public:
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JpegCompressor(EmulatedFakeCamera2 *parent);
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~JpegCompressor();
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// Start compressing COMPRESSED format buffers; JpegCompressor takes
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// ownership of the Buffers vector.
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status_t start(Buffers *buffers,
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nsecs_t captureTime);
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status_t cancel();
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bool isBusy();
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bool isStreamInUse(uint32_t id);
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bool waitForDone(nsecs_t timeout);
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// TODO: Measure this
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static const size_t kMaxJpegSize = 300000;
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private:
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Mutex mBusyMutex;
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bool mIsBusy;
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Condition mDone;
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Mutex mMutex;
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EmulatedFakeCamera2 *mParent;
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Buffers *mBuffers;
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nsecs_t mCaptureTime;
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StreamBuffer mJpegBuffer, mAuxBuffer;
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bool mFoundJpeg, mFoundAux;
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jpeg_compress_struct mCInfo;
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struct JpegError : public jpeg_error_mgr {
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JpegCompressor *parent;
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};
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j_common_ptr mJpegErrorInfo;
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struct JpegDestination : public jpeg_destination_mgr {
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JpegCompressor *parent;
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};
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static void jpegErrorHandler(j_common_ptr cinfo);
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static void jpegInitDestination(j_compress_ptr cinfo);
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static boolean jpegEmptyOutputBuffer(j_compress_ptr cinfo);
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static void jpegTermDestination(j_compress_ptr cinfo);
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bool checkError(const char *msg);
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void cleanUp();
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/**
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* Inherited Thread virtual overrides
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*/
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private:
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virtual status_t readyToRun();
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virtual bool threadLoop();
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};
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} // namespace android
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#endif
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