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External VNR speed improvement.

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Improved visual quality with 3x times speed-up.
Change list:
 1. Remove second chance filter in temporal denoising filter to mitigate trailing artifact.
 2. Add swap buffer to save one whole-frame memcpy.
 3. Do noise estimation on every N blocks.
 4. Adopt a faster moving object detection algorithm (change the structure).
 5. Refactor the for loops and PositionCheck().
 6. Refactor the function ReduceFalseDetection (RFD).
 7. Fix a bug in TrailingBlock() which causes a mismatch.
 8. Change unit test to support swap buffer test.
 9. Remove CopyMem8x8, use memcpy to copy U/V plane which can be optimized future.
 10. Remove DenoiseMetrics.

Review URL: https://codereview.webrtc.org/1871853003

Cr-Commit-Position: refs/heads/master@{#12340}
This commit is contained in:
jackychen
2016-04-12 23:02:55 -07:00
committed by Commit bot
parent a31fb75e44
commit afaae0d151
14 changed files with 391 additions and 581 deletions
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4
webrtc/modules/video_processing/frame_preprocessor.h
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@ -70,14 +70,14 @@ class VPMFramePreprocessor {
enum { kSkipFrameCA = 2 };
VideoContentMetrics* content_metrics_;
VideoFrame denoised_frame_;
VideoFrame denoised_frame_prev_;
VideoFrame denoised_frame_[2];
VideoFrame resampled_frame_;
VPMSpatialResampler* spatial_resampler_;
VPMContentAnalysis* ca_;
VPMVideoDecimator* vd_;
std::unique_ptr<VideoDenoiser> denoiser_;
bool enable_ca_;
uint8_t denoised_frame_toggle_;
uint32_t frame_cnt_;
};