tree 29868680ab91c88fe4ae998e69720d687736da70
parent 002e191faa88da2f224a357e66dd8b81e4986d6b
author chiyotsai <chiyotsai@google.com> 1673565943 -0800
committer Chi Yo Tsai <chiyotsai@google.com> 1674000917 +0000

MOTION_SEARCH: Disable mesh search for compound mode

The function `full_pixel_exhaustive` does not support compound mode. So
in the current codebase, the encoder outputs incorrect mv when mesh
search run run for compound mode. This commit disables the use of mesh
search when compound mode is being tested.

Performance:
| SPD_SET |    TESTSET     | AVG_PSNR | OVR_PSNR |  SSIM   | ENC_T |
|---------|----------------|----------|----------|---------|-------|
|    0    |     hdres2     | +0.001%  | +0.011%  | +0.005% | -1.4% |
|    0    |    lowres2     | -0.002%  | -0.002%  | -0.011% | -0.7% |
|    0    |    midres2     | -0.011%  | -0.010%  | -0.016% | -1.5% |
|    0    | screen_content | +0.043%  | +0.023%  | +0.063% | -9.7% |
|---------|----------------|----------|----------|---------|-------|
|    1    |     hdres2     | -0.010%  | -0.008%  | -0.002% | -0.5% |
|    1    |    lowres2     | +0.002%  | +0.002%  | +0.005% | -0.2% |
|    1    |    midres2     | -0.002%  | -0.002%  | +0.005% | -0.3% |
|    1    | screen_content | -0.022%  | -0.010%  | +0.140% | -2.9% |
|---------|----------------|----------|----------|---------|-------|
|    2    |     hdres2     | +0.002%  | +0.001%  | +0.005% | -0.1% |
|    2    |    lowres2     | +0.002%  | +0.002%  | +0.002% | +0.0% |
|    2    |    midres2     | -0.002%  | -0.002%  | -0.001% | -0.0% |
|    2    | screen_content | -0.022%  | -0.019%  | -0.030% | -0.3% |

No change is observed on speed 3 and above.

Note that some clips that relies on mesh search got much faster. e.g.
`BalloonFestival_1280x720_24fps_8bit.y4m` averages to 30% encoding time
reduction on speed 0.

STATS_CHANGED

Change-Id: I989bdf59e39aa9c42f53e06fcf785b1beff517bb