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Diffstat (limited to 'camera/QCamera2/util/QCameraDisplay.h')
| -rw-r--r-- | camera/QCamera2/util/QCameraDisplay.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/camera/QCamera2/util/QCameraDisplay.h b/camera/QCamera2/util/QCameraDisplay.h new file mode 100644 index 0000000..8b7e4c9 --- /dev/null +++ b/camera/QCamera2/util/QCameraDisplay.h @@ -0,0 +1,76 @@ +/* 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 6 + +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 ms prior to expected vsync so that + // it will be picked in that vsync + uint32_t mSet_timestamp_num_ms_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. + uint32_t mVfe_and_mdp_freq_wiggle_filter_max_ms; + uint32_t mVfe_and_mdp_freq_wiggle_filter_min_ms; + + android::DisplayEventReceiver mDisplayEventReceiver; +}; + +}; // namespace qcamera + +#endif /* __QCAMERADISPLAY_H__ */ |