drm_hwcomposer: fix incorrect layer_count usage

According to [1] DRM YCrCb planes is not the same as gralloc layers.
DRMHWC2 has no information about number of layers used in the buffer.
Also supplying value other than 1 will allways fail validation on
passthrough MapperHal@2.1 and probably other passthrough implementations [2].

[1] - https://cs.android.com/android/platform/superproject/+/master:hardware/libhardware/include/hardware/gralloc1.h;l=467;drc=1155c41d016a118801fe97b55af9918e531f7f84
[2] - https://cs.android.com/android/platform/superproject/+/master:hardware/interfaces/graphics/mapper/2.1/utils/passthrough/include/mapper-passthrough/2.1/Gralloc0Hal.h;l=40;drc=e308ceb1e9940d1d90a11177782a7cfe8630bb95

Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
Change-Id: Idbfea8eaa74a557b98ecdff728e6c67aeea9cea6
1 file changed
tree: 13d76eba6f4ce05bb602301240ba8d5c01f955f4
  1. backend/
  2. compositor/
  3. drm/
  4. include/
  5. platform/
  6. tests/
  7. utils/
  8. .clang-format
  9. .gitlab-ci-checkcommit.sh
  10. .gitlab-ci.yml
  11. Android.bp
  12. drmhwctwo.cpp
  13. MODULE_LICENSE_APACHE2
  14. NOTICE
  15. README.md
README.md

drm_hwcomposer

Patches to drm_hwcomposer are very much welcome, we really want this to be the universal HW composer implementation for Android and similar platforms So please bring on porting patches, bugfixes, improvements for documentation and new features.

A short list of contribution guidelines:

  • Submit changes via gitlab merge requests on gitlab.freedesktop.org

  • drm_hwcomposer is Apache 2.0 Licensed and we require contributions to follow the developer's certificate of origin: http://developercertificate.org/

  • When submitting new code please follow the naming conventions documented in the generated documentation. Also please make full use of all the helpers and convenience macros provided by drm_hwcomposer. The below command can help you with formatting of your patches:

    `git diff | clang-format-diff-5.0 -p 1 -style=file`
    
  • Hardware specific changes should be tested on relevant platforms before committing.

If you need inspiration, please checkout our TODO issues

Happy hacking!