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author | The Android Open Source Project <initial-contribution@android.com> | 2013-11-22 10:35:20 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2013-11-22 10:35:20 -0800 |
commit | 5bf2560ce9b70bee077e0c264ac06648f0f63acc (patch) | |
tree | f17ecec5321e8d583d045135f29f14f3c7418e71 /services/camera/libcameraservice/api1/client2/CaptureSequencer.h | |
parent | eb76f318e9daf91dbf195bcb74852b3bd736a32a (diff) | |
parent | b2059ff384eee8ffb70a7ec8fc5570405201c734 (diff) | |
download | frameworks_av-5bf2560ce9b70bee077e0c264ac06648f0f63acc.zip frameworks_av-5bf2560ce9b70bee077e0c264ac06648f0f63acc.tar.gz frameworks_av-5bf2560ce9b70bee077e0c264ac06648f0f63acc.tar.bz2 |
Merge commit 'b2059ff384eee8ffb70a7ec8fc5570405201c734' into HEAD
Diffstat (limited to 'services/camera/libcameraservice/api1/client2/CaptureSequencer.h')
-rw-r--r-- | services/camera/libcameraservice/api1/client2/CaptureSequencer.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/services/camera/libcameraservice/api1/client2/CaptureSequencer.h b/services/camera/libcameraservice/api1/client2/CaptureSequencer.h new file mode 100644 index 0000000..9fb4ee7 --- /dev/null +++ b/services/camera/libcameraservice/api1/client2/CaptureSequencer.h @@ -0,0 +1,178 @@ +/* + * 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. + */ + +#ifndef ANDROID_SERVERS_CAMERA_CAMERA2_CAPTURESEQUENCER_H +#define ANDROID_SERVERS_CAMERA_CAMERA2_CAPTURESEQUENCER_H + +#include <binder/MemoryBase.h> +#include <utils/Thread.h> +#include <utils/String16.h> +#include <utils/Vector.h> +#include <utils/Mutex.h> +#include <utils/Condition.h> +#include "camera/CameraMetadata.h" +#include "Parameters.h" +#include "FrameProcessor.h" + +namespace android { + +class Camera2Client; + +namespace camera2 { + +class ZslProcessorInterface; +class BurstCapture; + +/** + * Manages the still image capture process for + * zero-shutter-lag, regular, and video snapshots. + */ +class CaptureSequencer: + virtual public Thread, + virtual public FrameProcessor::FilteredListener { + public: + CaptureSequencer(wp<Camera2Client> client); + ~CaptureSequencer(); + + // Get reference to the ZslProcessor, which holds the ZSL buffers and frames + void setZslProcessor(wp<ZslProcessorInterface> processor); + + // Begin still image capture + status_t startCapture(int msgType); + + // Wait until current image capture completes; returns immediately if no + // capture is active. Returns TIMED_OUT if capture does not complete during + // the specified duration. + status_t waitUntilIdle(nsecs_t timeout); + + // Notifications about AE state changes + void notifyAutoExposure(uint8_t newState, int triggerId); + + // Notifications from the frame processor + virtual void onFrameAvailable(int32_t requestId, const CameraMetadata &frame); + + // Notifications from the JPEG processor + void onCaptureAvailable(nsecs_t timestamp, sp<MemoryBase> captureBuffer); + + void dump(int fd, const Vector<String16>& args); + + private: + /** + * Accessed by other threads + */ + Mutex mInputMutex; + + bool mStartCapture; + bool mBusy; + Condition mStartCaptureSignal; + + bool mNewAEState; + uint8_t mAEState; + int mAETriggerId; + Condition mNewNotifySignal; + + bool mNewFrameReceived; + int32_t mNewFrameId; + CameraMetadata mNewFrame; + Condition mNewFrameSignal; + + bool mNewCaptureReceived; + nsecs_t mCaptureTimestamp; + sp<MemoryBase> mCaptureBuffer; + Condition mNewCaptureSignal; + + bool mShutterNotified; + + /** + * Internal to CaptureSequencer + */ + static const nsecs_t kWaitDuration = 100000000; // 100 ms + static const int kMaxTimeoutsForPrecaptureStart = 10; // 1 sec + static const int kMaxTimeoutsForPrecaptureEnd = 20; // 2 sec + static const int kMaxTimeoutsForCaptureEnd = 40; // 4 sec + + wp<Camera2Client> mClient; + wp<ZslProcessorInterface> mZslProcessor; + sp<BurstCapture> mBurstCapture; + + enum CaptureState { + IDLE, + START, + ZSL_START, + ZSL_WAITING, + ZSL_REPROCESSING, + STANDARD_START, + STANDARD_PRECAPTURE_WAIT, + STANDARD_CAPTURE, + STANDARD_CAPTURE_WAIT, + BURST_CAPTURE_START, + BURST_CAPTURE_WAIT, + DONE, + ERROR, + NUM_CAPTURE_STATES + } mCaptureState; + static const char* kStateNames[]; + int mStateTransitionCount; + Mutex mStateMutex; // Guards mCaptureState + Condition mStateChanged; + + typedef CaptureState (CaptureSequencer::*StateManager)(sp<Camera2Client> &client); + static const StateManager kStateManagers[]; + + CameraMetadata mCaptureRequest; + + int mTriggerId; + int mTimeoutCount; + bool mAeInPrecapture; + + int32_t mCaptureId; + int mMsgType; + + // Main internal methods + + virtual bool threadLoop(); + + CaptureState manageIdle(sp<Camera2Client> &client); + CaptureState manageStart(sp<Camera2Client> &client); + + CaptureState manageZslStart(sp<Camera2Client> &client); + CaptureState manageZslWaiting(sp<Camera2Client> &client); + CaptureState manageZslReprocessing(sp<Camera2Client> &client); + + CaptureState manageStandardStart(sp<Camera2Client> &client); + CaptureState manageStandardPrecaptureWait(sp<Camera2Client> &client); + CaptureState manageStandardCapture(sp<Camera2Client> &client); + CaptureState manageStandardCaptureWait(sp<Camera2Client> &client); + + CaptureState manageBurstCaptureStart(sp<Camera2Client> &client); + CaptureState manageBurstCaptureWait(sp<Camera2Client> &client); + + CaptureState manageDone(sp<Camera2Client> &client); + + // Utility methods + + status_t updateCaptureRequest(const Parameters ¶ms, + sp<Camera2Client> &client); + + // Emit Shutter/Raw callback to java, and maybe play a shutter sound + static void shutterNotifyLocked(const Parameters ¶ms, + sp<Camera2Client> client, int msgType); +}; + +}; // namespace camera2 +}; // namespace android + +#endif |