Paul B Mahol <one...@gmail.com> writes:
> ---
> libswscale/rgb2rgb.c | 15 +++++++++++++++
> libswscale/rgb2rgb.h | 1 +
> libswscale/swscale_unscaled.c | 1 +
> 3 files changed, 17 insertions(+), 0 deletions(-)
>
> diff --git a/libswscale/rgb2rgb.c b/libswscale/rgb2rgb.c
> index 0f07e57..5458d26 100644
> --- a/libswscale/rgb2rgb.c
> +++ b/libswscale/rgb2rgb.c
> @@ -282,6 +282,21 @@ void rgb15tobgr15(const uint8_t *src, uint8_t
> *dst, int src_size)
> }
> }
>
> +void rgb12tobgr12(const uint8_t *src, uint8_t *dst, int src_size)
> +{
> + uint16_t *dest = (uint16_t*)dst;
> + uint16_t *sour = (uint16_t*)src;
> + int i;
> + int num_pixels = src_size >> 1;
> +
> + for (i = 0; i < num_pixels; i++) {
> + unsigned br;
> + unsigned rgb = sour[i];
> + br = rgb & 0x0F0F;
> + dest[i] = (br >> 8) | (rgb & 0x00F0) | (br << 8);
> + }
Why the messing around with 0x0f0f? Why not something like this:
dest[i] = (rgb << 8 | rgb & 0xf0 | rgb >> 8) & 0xfff;
--
Måns Rullgård
m...@mansr.com
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