github/mpv
1
Fork 0
mirror of https://github.com/mpv-player/mpv synced 2024-10-02 16:25:33 +02:00
Code Releases Activity

mp_image: align stride to multiple of texel size

Browse Source 
This helps with compatibility and/or performance in particular for
oddly-sized formats like rgb24. We use a loop to avoid having to
calculate the lcm (or waste bytes in the extremely common case of the
byte size and the stride align having shared factors).
This commit is contained in:
Niklas Haas 2018-11-18 05:47:43 +01:00 committed by Jan Ekström
parent a3c808c6c8
commit 9f7dcc0726
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
video/mp_image.c
View File

@ -72,6 +72,9 @@ static int mp_image_layout(int imgfmt, int w, int h, int stride_align,
int alloc_h = MP_ALIGN_UP(h, 32) >> desc.ys[n];
int line_bytes = (alloc_w * desc.bpp[n] + 7) / 8;
out_stride[n] = MP_ALIGN_UP(line_bytes, stride_align);
// also align to a multiple of desc.bytes[n]
while (desc.bytes[n] && out_stride[n] % desc.bytes[n])
out_stride[n] += stride_align;
out_plane_size[n] = out_stride[n] * alloc_h;
}
if (desc.flags & MP_IMGFLAG_PAL)