int(webp,jpeg-xl): Added check_open for WebP and JPEG XL readers (#5202)

This PR addresses the feature request in issue
#3974

Continuing from previous work done on this feature request, I have added
`check_open` calls to two new format readers, using file format specs
found online:
- WebP:
https://developers.google.com/speed/webp/faq#what_is_the_maximum_size_a_webp_image_can_be
- JPEG XL: https://jpegxl.info/resources/battle-of-codecs.html

I also cross-referenced this info with the corresponding
ImageOutput::check_open calls for sanity, and they seemed to align.


Signed-off-by: Hannah Gulka <hannahkg8@gmail.com>

Author: hkgulka

src/jpegxl.imageio/jxlinput.cpp

@@ -360,6 +360,10 @@ JxlInput::open(const std::string& name, ImageSpec& newspec)
 
     m_spec = ImageSpec(info.xsize, info.ysize, m_channels, m_data_type);
 
+    if (!check_open(m_spec,
+                    { 0, (1 << 30) - 1, 0, (1 << 30) - 1, 0, 1, 0, 4099 }))
+        return false;
+
     // Read ICC profile
     if (m_icc_profile.size() && m_icc_profile.data()) {
         m_spec.attribute("ICCProfile",

src/webp.imageio/webpinput.cpp

@@ -233,6 +233,9 @@ WebpInput::open(const std::string& name, ImageSpec& spec,
             m_spec.attribute("oiio:UnassociatedAlpha", 1);
     }
 
+    if (!check_open(m_spec, { 0, (1 << 14) - 1, 0, (1 << 14) - 1, 0, 1, 0, 4 }))
+        return false;
+
     seek_subimage(0, 0);
     spec = m_spec;
     return true;