libyuv/README.chromium at 32ccd53bb36421bb1e47b1cfa362b9fa6825e82a - libyuv - CoffeeCat

coffee/libyuv

mirror of https://chromium.googlesource.com/libyuv/libyuv synced 2025-12-07 17:26:49 +08:00

Frank Barchard 32ccd53bb3 Add P010ToNV12 to convert 10 bit biplanar to 8 bit biplanar

- P010 and NV12 have the same layout: Full size Y plane and half size UV plane.
  P010 and NV12 are 4:2:0 subsampling
- P010 uses upper 10 bits of 16 bit elements
- NV12 uses 8 bit elements
- The Convert16To8 used internally will discard the low 2 bits.
- UV order is the same - U first in memory, followed by V, interleaved
- UV plane is be rounded up in size to allow odd size Y to have UV values
- Similar code could be used to convert P210ToNV16, P410ToNV24, with the size
  of the UV plane affected by subsampling 4:2:2 and 4:4:4 variants.

Bug: b/357439226
Change-Id: I5d6ec84d97d0e0cc4008eeb18a929ea28570d6d9
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/5761958
Reviewed-by: Wan-Teh Chang <wtc@google.com>

2024-08-05 18:55:44 +00:00

11 lines

233 B

Plaintext

Raw Blame History

 Name: libyuv
 URL: https://chromium.googlesource.com/libyuv/libyuv/
 Version: 1893
 License: BSD
 License File: LICENSE
 Shipped: yes
 Description:
 libyuv is an open source project that includes YUV conversion and scaling functionality.