Quoting Claudio KLaN Ciccani:
> +static void Bop_yuy2_Sto_Aop( GenefxState *gfxs )
> +{
> + int w;
> + int i;
> + int l = 0;
> + int cr = 0;
> + __u8 *D = gfxs->Aop;
> + __u8 *S = gfxs->Bop;
> + int SperD = gfxs->SperD;
> +
> + for (w = 0; w < gfxs->length; w++) {
> + i = (l >> 16) * 2;
> + *D = S[i]; /* blit luma */
> +
> + l += SperD;
> +
> + if (!(w & 1)) { /* blit chroma */
> + i = (cr >> 16) * 4;
> + *(D+1) = S[i+1];
> + *(D+3) = S[i+3];
> +
> + cr += SperD;
> + }
> +
> + D += 2;
> + }
> +}
You should read and write 32 bit at once, otherwise you have
a big performance impact on most non-x86 and you have to
add extra code for big/little endian.
--
Best regards,
Denis Oliver Kropp
.------------------------------------------.
| DirectFB - Hardware accelerated graphics |
| http://www.directfb.org/ |
"------------------------------------------"
Convergence GmbH
