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zimg: support 3 component 16 bit pixel unpacking 

Works for RGB (e.g. rgb48le) and XYZ.

It's unsure whether XYZ is really correctly converted.
This commit is contained in:
wm4 2019-10-20 16:14:36 +02:00
parent 577c00510b
commit f23e663a21
1 changed files with 22 additions and 0 deletions
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22
video/zimg.c
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@ -253,6 +253,17 @@ static void xccc8_pack(void *dst, void *src[], int x0, int x1)
}
}
// 3 16 bit color components written to 3 planes.
static void ccc16_unpack(void *src, void *dst[], int x0, int x1)
{
uint16_t *r = src;
for (int x = x0; x < x1; x++) {
((uint16_t *)dst[0])[x] = *r++;
((uint16_t *)dst[1])[x] = *r++;
((uint16_t *)dst[2])[x] = *r++;
}
}
static int packed_repack(void *user, unsigned i, unsigned x0, unsigned x1)
{
struct mp_zimg_repack *r = user;
@ -357,6 +368,17 @@ static void setup_regular_rgb_packer(struct mp_zimg_repack *r)
r->components[n] = corder[p->components[first + n]];
return;
}
if (desc.component_size == 2 && p->num_components == 3) {
if (r->pack) // no packer yet
return;
r->repack = packed_repack;
r->packed_repack_scanline = ccc16_unpack;
r->zimgfmt = planar_fmt;
for (int n = 0; n < 3; n++)
r->components[n] = corder[p->components[n]];
return;
}
}
// (ctx can be NULL for the sake of probing.)