drm_hwcomposer: Add support for Arm Framebuffer Compression (AFBC) modifiers.
One needs to translate the Gralloc buffer flags for AFBC (eg MALI_GRALLOC_INTFMT_AFBC_BASIC) to the corresponding linux kernel drm modifiers. This gets passed to libdrm via drmModeAddFB2WithModifiers. Changes from v1:- - Moved ConvertGrallocFormatToDrmModifiers() and IsDrmFormatRgb() from 'DrmGenericImporter' to 'HisiImporter' as suggested by Sean paul - Check if the format is rgb and set AFBC_FORMAT_MOD_YTR only if any of the AFBC related Gralloc flags are set. Changes from v2:- - Changed ConvertGrallocFormatToDrmModifiers() and IsDrmFormatRgb() from 'public' to 'private' (suggested by Sean Paul) Changes from v3:- - Reordered the members of 'class HisiImporter'. Functions should go above member variables. (suggested by Sean Paul) Changes from v4:- - Rebased and some style changes (as suggested by gitlab-ci-checkcommit.sh) Signed-off-by: Ayan Kumar Halder <ayan.halder@arm.com> Reviewed-by: Sean Paul <seanpaul@chromium.org> /-- Note for reviewer I was able to get this working for hikey960 with aosp/master for kernel 4.14. The libdrm headers need to be updated as the AFBC modifiers are missing in the aosp/master's external/libdrm. --/ Change-Id: I66abaa08d19ce88169cc40522b167dfe5efc7036