You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
77 lines
3.2 KiB
77 lines
3.2 KiB
/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions are |
|
* met: |
|
* * Redistributions of source code must retain the above copyright |
|
* notice, this list of conditions and the following disclaimer. |
|
* * Redistributions in binary form must reproduce the above |
|
* copyright notice, this list of conditions and the following |
|
* disclaimer in the documentation and/or other materials provided |
|
* with the distribution. |
|
* * Neither the name of The Linux Foundation nor the names of its |
|
* contributors may be used to endorse or promote products derived |
|
* from this software without specific prior written permission. |
|
* |
|
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
|
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
|
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
|
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
* |
|
*/ |
|
|
|
#ifndef __QCAMERADISPLAY_H__ |
|
#define __QCAMERADISPLAY_H__ |
|
|
|
#include <gui/DisplayEventReceiver.h> |
|
#include <android/looper.h> |
|
#include <utils/Looper.h> |
|
|
|
namespace qcamera { |
|
|
|
#define CAMERA_NUM_VSYNC_INTERVAL_HISTORY 8 |
|
#define NSEC_PER_MSEC 1000000LLU |
|
|
|
class QCameraDisplay { |
|
public: |
|
QCameraDisplay(); |
|
~QCameraDisplay(); |
|
static int vsyncEventReceiverCamera(int fd, int events, void* data); |
|
static void* vsyncThreadCamera(void * data); |
|
void computeAverageVsyncInterval(nsecs_t currentVsyncTimeStamp); |
|
nsecs_t computePresentationTimeStamp(nsecs_t frameTimeStamp); |
|
|
|
private: |
|
pthread_t mVsyncThreadCameraHandle; |
|
nsecs_t mVsyncTimeStamp; |
|
nsecs_t mAvgVsyncInterval; |
|
nsecs_t mOldTimeStamp; |
|
nsecs_t mVsyncIntervalHistory[CAMERA_NUM_VSYNC_INTERVAL_HISTORY]; |
|
nsecs_t mVsyncHistoryIndex; |
|
nsecs_t mAdditionalVsyncOffsetForWiggle; |
|
uint32_t mThreadExit; |
|
// Tunable property. Increasing this will increase the frame delay and will loose |
|
// the real time display. |
|
uint32_t mNum_vsync_from_vfe_isr_to_presentation_timestamp; |
|
// Tunable property. Set the time stamp x ns prior to expected vsync so that |
|
// it will be picked in that vsync |
|
nsecs_t mSet_timestamp_num_ns_prior_to_vsync; |
|
// Tunable property for filtering timestamp wiggle when VFE ISR crosses |
|
// over MDP ISR over a period. Typical scenario is VFE is running at |
|
// 30.2 fps vs display running at 60 fps. |
|
nsecs_t mVfe_and_mdp_freq_wiggle_filter_max_ns; |
|
nsecs_t mVfe_and_mdp_freq_wiggle_filter_min_ns; |
|
|
|
android::DisplayEventReceiver mDisplayEventReceiver; |
|
}; |
|
|
|
}; // namespace qcamera |
|
|
|
#endif /* __QCAMERADISPLAY_H__ */
|
|
|