Added MOJODDS_isDDS().

icculus · May 9, 2011 · 2d963a8 · 2d963a8
1 parent 786dff6
commit 2d963a8
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Showing 2 changed files with 8 additions and 0 deletions.
diff --git a/mojodds.c b/mojodds.c
@@ -173,6 +173,13 @@ static int parse_dds(MOJODDS_Header *header, const uint8 **ptr, size_t *len)
 
 
 // !!! FIXME: improve the crap out of this API later.
+int MOJODDS_isDDS(const void *_ptr, const unsigned long _len)
+{
+    size_t len = (size_t) _len;
+    const uint8 *ptr = (const uint8 *) _ptr;
+    return (readui32(&ptr, &len) == DDS_MAGIC);
+}
+
 int MOJODDS_getTexture(const void *_ptr, const unsigned long _len,
                        const void **_tex, unsigned long *_texlen, int *_dxtver,
                        unsigned int *_w, unsigned int *_h)

diff --git a/mojodds.h b/mojodds.h
@@ -3,6 +3,7 @@
 
 /* !!! FIXME: flesh this file out. */
 
+int MOJODDS_isDDS(const void *_ptr, const unsigned long _len);
 int MOJODDS_getTexture(const void *_ptr, const unsigned long _len,
                        const void **_tex, unsigned long *_texlen, int *_dxtver,
                        unsigned int *_w, unsigned int *_h);