On 29 January 2015 at 07:41, Haixia Shi <hshi@xxxxxxxxxxxx> wrote:
> The run-length encoding algorithm should compare 16-bit encoded pixel
> values instead of comparing raw pixel values. It allows pixels
> with similar but different colors to be encoded as repeat pixels, and
> thus potentially save USB bandwidth.
This fails to build here, are we missing some precursor patches?
CC [M] drivers/gpu/drm/udl/udl_transfer.o
/home/airlied/devel/kernel/drm-next/drivers/gpu/drm/udl/udl_transfer.c:
In function ‘get_pixel_val16’:
/home/airlied/devel/kernel/drm-next/drivers/gpu/drm/udl/udl_transfer.c:91:3:
error: implicit declaration of function ‘pixel32_to_be16p’
[-Werror=implicit-function-declaration]
pixel_val16 = pixel32_to_be16p(pixel);
^
/home/airlied/devel/kernel/drm-next/drivers/gpu/drm/udl/udl_transfer.c:
In function ‘udl_compress_hline16’:
/home/airlied/devel/kernel/drm-next/drivers/gpu/drm/udl/udl_transfer.c:180:33:
error: ‘start’ undeclared (first use in this function)
*raw_pixels_count_byte = (((start -
^
/home/airlied/devel/kernel/drm-next/drivers/gpu/drm/udl/udl_transfer.c:180:33:
note: each undeclared identifier is reported only once for each
function it appears in
cc1: some warnings being treated as errors
Dave.
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