X-Git-Url: https://git.sesse.net/?p=qscale;a=blobdiff_plain;f=libqscale.h;h=409a9bb7488366ddee5770bd38489eaddae48a2a;hp=d56320a8734616ecc0b823239ff5c8a7ccf5423f;hb=HEAD;hpb=91eb477176f30904d146d5afb7ec5cbc3b00f735

diff --git a/libqscale.h b/libqscale.h
index d56320a..409a9bb 100644
--- a/libqscale.h
+++ b/libqscale.h
@@ -6,12 +6,20 @@
 
 typedef struct {
 	/* True image size */
-	int width, height;
+	unsigned width, height;
+
+	/* 1 = B/W, 3 = YCbCr */	
+	unsigned num_components;
 
 	/* Component image sizes (possibly subsampled) */
-	int w0, h0;
-	int w1, h1;
-	int w2, h2;
+	unsigned w0, h0;
+	unsigned w1, h1;
+	unsigned w2, h2;
+
+	/* Sampling factors */
+	unsigned samp_h0, samp_v0;
+	unsigned samp_h1, samp_v1;
+	unsigned samp_h2, samp_v2;
 
 	/* The data itself */
 	JSAMPLE *data_y, *data_cb, *data_cr;
@@ -19,18 +27,21 @@ typedef struct {
 
 enum qscale_scaling_filter {
 	LANCZOS = 0,
+	MITCHELL = 1,
 };
 
 enum qscale_jpeg_mode {
 	SEQUENTIAL = 0,
-	PROGRESSIVE = 1
+	PROGRESSIVE = 1,
 };
 
 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, int jpeg_quality, qscale_jpeg_mode jpeg_mode);
+int qscale_save_jpeg(const qscale_img *img, const char *filename, unsigned jpeg_quality, enum qscale_jpeg_mode jpeg_mode);
+int qscale_save_jpeg_to_stdio(const qscale_img *img, FILE *file, unsigned jpeg_quality, enum qscale_jpeg_mode jpeg_mode);
 
-qscale_img *qscale_scale(qscale_img *source, int width, int height, int samp_h0, int samp_v0, int samp_h1, int samp_v1, int samp_h2, int samp_v2, enum qscale_scaling_filter scaling_filter);
-void qscale_destroy(qscale_img *image);
+qscale_img *qscale_clone(const qscale_img *img);
+qscale_img *qscale_scale(qscale_img *src, 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 *img);
 
 #endif /* !defined(_LIBQSCALE_H) */