diff options
Diffstat (limited to 'src/libmemdraw/unload.c')
-rw-r--r-- | src/libmemdraw/unload.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/libmemdraw/unload.c b/src/libmemdraw/unload.c new file mode 100644 index 00000000..86835757 --- /dev/null +++ b/src/libmemdraw/unload.c @@ -0,0 +1,25 @@ +#include <u.h> +#include <libc.h> +#include <draw.h> +#include <memdraw.h> + +int +_unloadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata) +{ + int y, l; + uchar *q; + + if(!rectinrect(r, i->r)) + return -1; + l = bytesperline(r, i->depth); + if(ndata < l*Dy(r)) + return -1; + ndata = l*Dy(r); + q = byteaddr(i, r.min); + for(y=r.min.y; y<r.max.y; y++){ + memmove(data, q, l); + q += i->width*sizeof(u32int); + data += l; + } + return ndata; +} |