| commit | d9d4b9bb1bcb007db751a7473e00167ea9ffeb2f | |
| author | wuchengli <wuchengli@chromium.org> | |
| Mon, 14 Sep 2015 06:31:41 +0000 (13 23:31 -0700) | ||
| committer | Commit bot <commit-bot@chromium.org> | |
| Mon, 14 Sep 2015 06:32:16 +0000 (14 06:32 +0000) | ||
| tree | 670e5cbb00609100f84c7d15fa55440e2f4d69aa | treesnapshot (tar.gz zip) |
| parent | 2f9680dd148dfb21b896e4db2266df32e602160e | commitdiff |
Add PIXEL_FORMAT_MT21.
MT21 is a MediaTek proprietary format. MT21 is similar to NV21
except the memory layout and pixel layout (swizzles). YUV 4:2:0.
2x2 VU samples. 12 bits per pixel.
Each image contains two buffers, one for Y plane and one for
interleaved VU plane. Two planes can be non-contiguous in memory.
Suppose image dimension is (width, height)
Plane[0]: Y plane
Start address alignment = 4K bytes
Offset from Buffer[0] start address = 0
Row pitch = ((width+15)/16) * 16
Plane size = Row pitch * (((height+31)/32)*32)
Plane[1]: VU plane
Start address alignment = 4K bytes
Offset from Buffer[1] start address = 0
Row pitch = ((width+15)/16) * 16
Plane size = Row pitch * (((height+31)/32)*32)/2
BUG=chrome-os-partner:44784
TESTS=Play video and run apprtc loopback.
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1326153002
Cr-Commit-Position: refs/heads/master@{#348575}
MT21 is a MediaTek proprietary format. MT21 is similar to NV21
except the memory layout and pixel layout (swizzles). YUV 4:2:0.
2x2 VU samples. 12 bits per pixel.
Each image contains two buffers, one for Y plane and one for
interleaved VU plane. Two planes can be non-contiguous in memory.
Suppose image dimension is (width, height)
Plane[0]: Y plane
Start address alignment = 4K bytes
Offset from Buffer[0] start address = 0
Row pitch = ((width+15)/16) * 16
Plane size = Row pitch * (((height+31)/32)*32)
Plane[1]: VU plane
Start address alignment = 4K bytes
Offset from Buffer[1] start address = 0
Row pitch = ((width+15)/16) * 16
Plane size = Row pitch * (((height+31)/32)*32)/2
BUG=chrome-os-partner:44784
TESTS=Play video and run apprtc loopback.
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1326153002
Cr-Commit-Position: refs/heads/master@{#348575}