• Jehan's avatar
    libs/rgbe: RGBE magic number made more generic. · cab443df
    Jehan authored
    So it turns out (cf bug 792453) that a RGBE file made with Photoshop
    starts with "#?RGBE", instead of "#?RADIANCE". Looking up Blender's
    implementation, they only use "#?" with a comment clearly saying the
    string after can be anything. Since there doesn't seem to be any other
    file format starting with the "#?" magic number anyway, I guess we
    should just do the same and simply drop any character between "#?" and
    the first newline in the file.
    
    While changing the code, amending for this new magic number, I also made
    it a bit more robust to random contents. In particular,
    g_mapped_file_get_contents() can return NULL, so this has to be checked
    before dereferencing its contents. Moreover glib code says that the
    returned string is not necessarily zero-terminated, so we must properly
    limit searches and comparisons to the data size.
    cab443df
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