qscale_img *qscale_load_jpeg(const char *filename);
qscale_img *qscale_load_jpeg_from_stdio(FILE *file);
-int qscale_save_jpeg(const qscale_img *image, const char *filename, unsigned jpeg_quality, qscale_jpeg_mode jpeg_mode);
+int qscale_save_jpeg(const qscale_img *image, const char *filename, unsigned jpeg_quality, enum qscale_jpeg_mode jpeg_mode);
qscale_img *qscale_scale(qscale_img *source, unsigned width, unsigned height, unsigned samp_h0, unsigned samp_v0, unsigned samp_h1, unsigned samp_v1, unsigned samp_h2, unsigned samp_v2, enum qscale_scaling_filter scaling_filter);
void qscale_destroy(qscale_img *image);