/*
- * Image Library -- Main hearer file
+ * Image Library -- Main header file
*
* (c) 2006 Pavel Charvat <pchar@ucw.cz>
*
/* context.c
* - contexts with error/message handling
- * - imagelib is thread-safe until each context is bounded to a single thread */
+ * - imagelib is thread-safe as long as threads work in different contexts */
struct image_context {
byte *msg; /* last message */
extern uns image_max_bytes; /* ImageLib.ImageMaxBytes */
/* SSE aligning size, see IMAGE_SSE_ALIGNED */
-#define IMAGE_SSE_ALIGN_SIZE (MAX(16, sizeof(uns)))
+#define IMAGE_SSE_ALIGN_SIZE 16
enum image_flag {
IMAGE_COLOR_SPACE = 0x7, /* mask for enum color_space */
struct image {
byte *pixels; /* aligned top left pixel, there are at least sizeof(uns)
- unsed bytes after the buffer (possible optimizations) */
- u32 cols; /* number of columns */
- u32 rows; /* number of rows */
- u32 pixel_size; /* size of pixel (1, 2, 3 or 4) */
- u32 row_size; /* scanline size in bytes */
- u32 row_pixels_size; /* scanline size in bytes excluding rows gaps */
- u32 image_size; /* rows * row_size */
- u32 flags; /* enum image_flag */
+ unused bytes after the buffer (possible optimizations) */
+ uns cols; /* number of columns */
+ uns rows; /* number of rows */
+ 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 */
+ uns image_size; /* rows * row_size */
+ uns flags; /* enum image_flag */
};
struct image *image_new(struct image_context *ctx, uns cols, uns rows, uns flags, struct mempool *pool);
/* scale.c */
int image_scale(struct image_context *ctx, struct image *dest, struct image *src);
-void image_dimensions_fit_to_box(u32 *cols, u32 *rows, u32 max_cols, u32 max_rows, uns upsample);
+void image_dimensions_fit_to_box(uns *cols, uns *rows, uns max_cols, uns max_rows, uns upsample);
/* alpha.c */
enum image_format format; /* [R W] - file format (IMAGE_FORMAT_x) */
struct fastbuf *fastbuf; /* [R W] - source/destination stream */
struct mempool *pool; /* [ I ] - parameter to image_new */
- u32 cols; /* [ HI ] - number of columns, parameter to image_new */
- u32 rows; /* [ HI ] - number of rows, parameter to image_new */
- u32 flags; /* [ HI ] - see enum image_io_flags */
- u32 jpeg_quality; /* [ W] - JPEG compression quality (1..100) */
- u32 number_of_colors; /* [ H ] - number of image colors */
+ uns cols; /* [ HI ] - number of columns, parameter to image_new */
+ uns rows; /* [ HI ] - number of rows, parameter to image_new */
+ uns flags; /* [ HI ] - see enum image_io_flags */
+ uns jpeg_quality; /* [ W] - JPEG compression quality (1..100) */
+ uns number_of_colors; /* [ H ] - number of image colors */
struct color background_color; /* [ HI ] - background color, zero if undefined */
-#ifdef CONFIG_IMAGES_EXIF
- u32 exif_size; /* [ H W] - EXIF size in bytes (zero if not present) */
+ uns exif_size; /* [ H W] - EXIF size in bytes (zero if not present) */
byte *exif_data; /* [ H W] - EXIF data */
-#endif
/* internals */
struct image_context *context;
IMAGE_IO_NEED_DESTROY = 0x10000, /* [ O ] - enables automatic call of image_destroy */
IMAGE_IO_HAS_PALETTE = 0x20000, /* [ H ] - true for image with indexed colors */
IMAGE_IO_USE_BACKGROUND = 0x40000, /* [ I ] - merge transparent pixels with background_color */
-#ifdef CONFIG_IMAGES_EXIF
IMAGE_IO_WANT_EXIF = 0x80000, /* [R ] - read EXIF data if present */
-#endif
};
int image_io_init(struct image_context *ctx, struct image_io *io);