IMAGE_INTERNAL_FLAGS = IMAGE_NEED_DESTROY | IMAGE_GAPS_PROTECTED,
};
+#define IMAGE_MAX_CHANNELS 4
+#define IMAGE_CHANNELS_FORMAT_MAX_SIZE 128
+byte *image_channels_format_to_name(uns format, byte *buf);
+uns image_name_to_channels_format(byte *name);
+
+struct color {
+ byte c[IMAGE_MAX_CHANNELS];
+ byte color_space;
+};
+
struct image {
byte *pixels; /* aligned top left pixel, there are at least sizeof(uns)
unused bytes after the buffer (possible optimizations) */
uns cols; /* number of columns */
uns rows; /* number of rows */
- uns channels; /* number of color channels */
+ uns channels; /* number of color channels including the alpha channel */
uns pixel_size; /* size of pixel in bytes (1, 2, 3 or 4) */
uns row_size; /* scanline size in bytes */
uns row_pixels_size; /* scanline size in bytes excluding rows gaps */
{
return cols && rows && cols <= image_max_dim && rows <= image_max_dim;
}
-
-#define IMAGE_CHANNELS_FORMAT_MAX_SIZE 128
-byte *image_channels_format_to_name(uns format, byte *buf);
-uns image_name_to_channels_format(byte *name);
-
-struct color {
- byte c[3];
- byte color_space;
-} PACKED;
-
/* scale.c */
int image_scale(struct image_context *ctx, struct image *dest, struct image *src);
void image_dimensions_fit_to_box(uns *cols, uns *rows, uns max_cols, uns max_rows, uns upsample);
-/* alpha.c */
-
-int image_apply_background(struct image_context *ctx, struct image *dest, struct image *src, struct color *background);
-
/* image-io.c */
enum image_format {