Framerate-reduction code is disabled on all platforms, and this code
adds complexity. It's necessary to react fast, especially on mobile
platforms or other bad network conditions and framerate reduction adds
another step between HD and QVGA.
BUG=webrtc:5678, webrtc:5830
R=jackychen@webrtc.org, mflodman@webrtc.org
Review URL: https://codereview.webrtc.org/1885893002 .
Cr-Commit-Position: refs/heads/master@{#12503}
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}
Improved the existing external denoiser in WebRTC: the filter strength
is adaptive based on the noise level of the whole frame and the moving
object detection result. The adaptive filter effectively removes the
artifacts in previous version, such as trailing and blockiness on moving
objects.
The external denoiser is off by default for now.
BUG=
Review URL: https://codereview.webrtc.org/1822333003
Cr-Commit-Position: refs/heads/master@{#12198}
This CL is the first in a series of CLs to refactor
VideoProcessing(Module) to follow Google C++ style guide and make the
code more readable.
This CL removed inheritance from Module, renames variables and makes
VideoProcessingImpl::PreprocessFrame return a frame pointer if there
is a frame to send, nullptr otherwise. The affected CLs also passes git
cl lint.
BUG=webrtc:5259
Review URL: https://codereview.webrtc.org/1482913003
Cr-Commit-Position: refs/heads/master@{#10907}
