// Used by read_frame.
int colormodel_supported(int colormodel);
+// stubs for now
+ static const char *compressiontostr(const char *codec) { return codec; }
+ static const char *strtocompression(const char *string) { return string; }
// subclass memory usage
int64_t file_memory_usage();
// Used by CICache to calculate the total size of the cache.