diff options
Diffstat (limited to 'fitz/image_png.c')
| -rw-r--r-- | fitz/image_png.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fitz/image_png.c b/fitz/image_png.c index bda959fe..7eebdced 100644 --- a/fitz/image_png.c +++ b/fitz/image_png.c @@ -578,3 +578,22 @@ fz_load_png(fz_context *ctx, unsigned char *p, int total) return image; } + +void +fz_load_png_info(fz_context *ctx, unsigned char *p, int total, int *wp, int *hp, int *xresp, int *yresp, fz_colorspace **cspacep) +{ + struct info png; + + png_read_image(ctx, &png, p, total); + + if (png.n == 3 || png.n == 4) + *cspacep = fz_device_rgb; + else + *cspacep = fz_device_gray; + + *wp = png.width; + *hp = png.height; + *xresp = png.xres; + *yresp = png.xres; + fz_free(png.ctx, png.samples); +} |