#ifndef _DATATYPES_H_
#define _DATATYPES_H_
-#include "imio.h"
+#include <stddef.h>
#include "imconfig.h"
+#include "imio.h"
#define MAXCHANNELS 4
typedef int undef_int; /* special value to put in typemaps to retun undef on 0 and 1 on 1 */
+/*
+=item i_color
+=category Data Types
+=synopsis i_color black;
+=synopsis black.rgba.r = black.rgba.g = black.rgba.b = black.rgba.a = 0;
+
+Type for 8-bit/sample color.
+
+Samples as per;
+
+ i_color c;
+
+i_color is a union of:
+
+=over
+
+=item *
+
+gray - contains a single element gray_color, eg. C<c.gray.gray_color>
+
+=item *
+
+C<rgb> - contains three elements C<r>, C<g>, C<b>, eg. C<c.rgb.r>
+
+=item *
+
+C<rgba> - contains four elements C<r>, C<g>, C<b>, C<a>, eg. C<c.rgba.a>
+
+=item *
+
+C<cmyk> - contains four elements C<c>, C<m>, C<y>, C<k>,
+eg. C<c.cmyk.y>. Note that Imager never uses CMYK colors except when
+reading/writing files.
+
+=item *
+
+channels - an array of four channels, eg C<c.channels[2]>.
+
+=back
+
+=cut
+*/
+
typedef union {
gray_color gray;
rgb_color rgb;
typedef struct { i_fsample_t r, g, b, a; } i_frgba_color_t;
typedef struct { i_fsample_t c, m, y, k; } i_fcmyk_color_t;
+/*
+=item i_fcolor
+=category Data Types
+
+This is the double/sample color type.
+
+Its layout exactly corresponds to i_color.
+
+=cut
+*/
+
typedef union {
i_fgray_color_t gray;
i_frgb_color_t rgb;
} i_img_tags;
typedef struct i_img_ i_img;
-typedef int (*i_f_ppix_t)(i_img *im, int x, int y, i_color *pix);
-typedef int (*i_f_ppixf_t)(i_img *im, int x, int y, i_fcolor *pix);
-typedef int (*i_f_plin_t)(i_img *im, int x, int r, int y, i_color *vals);
-typedef int (*i_f_plinf_t)(i_img *im, int x, int r, int y, i_fcolor *vals);
+typedef int (*i_f_ppix_t)(i_img *im, int x, int y, const i_color *pix);
+typedef int (*i_f_ppixf_t)(i_img *im, int x, int y, const i_fcolor *pix);
+typedef int (*i_f_plin_t)(i_img *im, int x, int r, int y, const i_color *vals);
+typedef int (*i_f_plinf_t)(i_img *im, int x, int r, int y, const i_fcolor *vals);
typedef int (*i_f_gpix_t)(i_img *im, int x, int y, i_color *pix);
typedef int (*i_f_gpixf_t)(i_img *im, int x, int y, i_fcolor *pix);
typedef int (*i_f_glin_t)(i_img *im, int x, int r, int y, i_color *vals);
const int *chan, int chan_count);
typedef int (*i_f_gpal_t)(i_img *im, int x, int r, int y, i_palidx *vals);
-typedef int (*i_f_ppal_t)(i_img *im, int x, int r, int y, i_palidx *vals);
-typedef int (*i_f_addcolors_t)(i_img *im, i_color *colors, int count);
+typedef int (*i_f_ppal_t)(i_img *im, int x, int r, int y, const i_palidx *vals);
+typedef int (*i_f_addcolors_t)(i_img *im, const i_color *colors, int count);
typedef int (*i_f_getcolors_t)(i_img *im, int i, i_color *, int count);
typedef int (*i_f_colorcount_t)(i_img *im);
typedef int (*i_f_maxcolors_t)(i_img *im);
-typedef int (*i_f_findcolor_t)(i_img *im, i_color *color, i_palidx *entry);
-typedef int (*i_f_setcolors_t)(i_img *im, int index, i_color *colors,
+typedef int (*i_f_findcolor_t)(i_img *im, const i_color *color, i_palidx *entry);
+typedef int (*i_f_setcolors_t)(i_img *im, int index, const i_color *colors,
int count);
typedef void (*i_f_destroy_t)(i_img *im);
+typedef int (*i_f_gsamp_bits_t)(i_img *im, int x, int r, int y, unsigned *samp,
+ const int *chans, int chan_count, int bits);
+typedef int (*i_f_psamp_bits_t)(i_img *im, int x, int r, int y, unsigned const *samp,
+ const int *chans, int chan_count, int bits);
+
+/*
+=item i_img_dim
+=category Data Types
+=synopsis i_img_dim x;
+=order 90
+
+A signed integer type that represents an image dimension or ordinate.
+
+May be larger than int on some platforms.
+
+=cut
+*/
+
+typedef int i_img_dim;
+
+/*
+=item i_img
+=category Data Types
+=synopsis i_img *img;
+=order 10
+
+This is Imager's image type.
+
+It contains the following members:
+
+=over
+
+=item *
+
+C<channels> - the number of channels in the image
+
+=item *
+
+C<xsize>, C<ysize> - the width and height of the image in pixels
+
+=item *
+
+C<bytes> - the number of bytes used to store the image data. Undefined
+where virtual is non-zero.
+
+=item *
+
+C<ch_mask> - a mask of writable channels. eg. if this is 6 then only
+channels 1 and 2 are writable. There may be bits set for which there
+are no channels in the image.
+
+=item *
+
+C<bits> - the number of bits stored per sample. Should be one of
+i_8_bits, i_16_bits, i_double_bits.
+
+=item *
+
+C<type> - either i_direct_type for direct color images, or i_palette_type
+for paletted images.
+
+=item *
+
+C<virtual> - if zero then this image is-self contained. If non-zero
+then this image could be an interface to some other implementation.
+
+=item *
+
+C<idata> - the image data. This should not be directly accessed. A new
+image implementation can use this to store its image data.
+i_img_destroy() will myfree() this pointer if it's non-null.
+
+=item *
+
+C<tags> - a structure storing the image's tags. This should only be
+accessed via the i_tags_*() functions.
+
+=item *
+
+C<ext_data> - a pointer for use internal to an image implementation.
+This should be freed by the image's destroy handler.
+
+=item *
+
+C<im_data> - data internal to Imager. This is initialized by
+i_img_init().
+
+=item *
+
+i_f_ppix, i_f_ppixf, i_f_plin, i_f_plinf, i_f_gpix, i_f_gpixf,
+i_f_glin, i_f_glinf, i_f_gsamp, i_f_gampf - implementations for each
+of the required image functions. An image implementation should
+initialize these between calling i_img_alloc() and i_img_init().
+
+=item *
+
+i_f_gpal, i_f_ppal, i_f_addcolors, i_f_getcolors, i_f_colorcount,
+i_f_maxcolors, i_f_findcolor, i_f_setcolors - implementations for each
+paletted image function.
+
+=item *
+
+i_f_destroy - custom image destruction function. This should be used
+to release memory if necessary.
+
+=item *
+
+i_f_gsamp_bits - implements i_gsamp_bits() for this image.
+
+=item *
+
+i_f_psamp_bits - implements i_psamp_bits() for this image.
+
+=back
+
+=cut
+*/
+
struct i_img_ {
int channels;
- int xsize,ysize,bytes;
+ i_img_dim xsize,ysize;
+ size_t bytes;
unsigned int ch_mask;
i_img_bits_t bits;
i_img_type_t type;
i_f_setcolors_t i_f_setcolors;
i_f_destroy_t i_f_destroy;
+
+ /* as of 0.61 */
+ i_f_gsamp_bits_t i_f_gsamp_bits;
+ i_f_psamp_bits_t i_f_psamp_bits;
+
+ void *im_data;
};
/* ext_data for paletted images
*/
-
-
-
-
/* bitmap mask */
struct i_bitmap {
void btm_set(struct i_bitmap *btm,int x,int y);
-
-
-
-
-
-
/* Stack/Linked list */
struct llink {
void octt_dump(struct octt *ct);
void octt_count(struct octt *ct,int *tot,int max,int *overflow);
void octt_delete(struct octt *ct);
+void octt_histo(struct octt *ct, unsigned int **col_usage_it_adr);
/* font bounding box results */
enum bounding_box_index_t {
struct i_fill_tag;
typedef void (*i_fill_with_color_f)
- (struct i_fill_tag *fill, int x, int y, int width, int channels,
+(struct i_fill_tag *fill, i_img_dim x, i_img_dim y, i_img_dim width, int channels,
i_color *data);
typedef void (*i_fill_with_fcolor_f)
- (struct i_fill_tag *fill, int x, int y, int width, int channels,
+ (struct i_fill_tag *fill, i_img_dim x, i_img_dim y, i_img_dim width, int channels,
i_fcolor *data);
typedef void (*i_fill_destroy_f)(struct i_fill_tag *fill);
+
+/* combine functions modify their target and are permitted to modify
+ the source to prevent having to perform extra copying/memory
+ allocations, etc
+ The out array has I<channels> channels.
+
+ The in array has I<channels> channels + an alpha channel if one
+ isn't included in I<channels>.
+*/
+
typedef void (*i_fill_combine_f)(i_color *out, i_color *in, int channels,
- int count);
+ i_img_dim count);
typedef void (*i_fill_combinef_f)(i_fcolor *out, i_fcolor *in, int channels,
- int count);
+ i_img_dim count);
/* fountain fill types */
typedef enum {
i_fts_circle
} i_ft_supersample;
+/*
+=item i_fill_t
+=category Data Types
+=synopsis i_fill_t *fill;
+
+This is the "abstract" base type for Imager's fill types.
+
+Unless you're implementing a new fill type you'll typically treat this
+as an opaque type.
+
+=cut
+*/
typedef struct i_fill_tag
{
/* called for 8-bit/sample image (and maybe lower) */
/* this may be NULL, if so call fill_with_fcolor */
- i_fill_with_color_f fill_with_color;
+ i_fill_with_color_f f_fill_with_color;
/* called for other sample sizes */
/* this must be non-NULL */
- i_fill_with_fcolor_f fill_with_fcolor;
+ i_fill_with_fcolor_f f_fill_with_fcolor;
/* called if non-NULL to release any extra resources */
i_fill_destroy_f destroy;
#endif
-#ifdef HAVE_FT2
-
-typedef struct FT2_Fonthandle FT2_Fonthandle;
-
-#endif
-
/* transparency handling for quantized output */
typedef enum i_transp_tag {
tr_none, /* ignore any alpha channel */
mc_web_map, /* Use the 216 colour web colour map */
mc_addi, /* Addi's algorithm */
mc_median_cut, /* median cut - similar to giflib, hopefully */
+ mc_mono, /* fixed mono color map */
mc_mask = 0xFF /* (mask for generator) */
} i_make_colors;
/* passed into i_writegif_gen() to control quantization */
typedef struct i_quantize_tag {
+ int version;
+
/* how to handle transparency */
i_transp transp;
/* the threshold at which to make pixels opaque */
/* the amount of perturbation to use for translate is mc_perturb */
int perturb;
+ /* version 2 members after here */
} i_quantize;
typedef struct i_gif_opts {
int eliminate_unused;
} i_gif_opts;
+/* distance measures used by some filters */
+enum {
+ i_dmeasure_euclidean = 0,
+ i_dmeasure_euclidean_squared = 1,
+ i_dmeasure_manhatten = 2,
+ i_dmeasure_limit = 2,
+};
+
+#include "iolayert.h"
+typedef struct i_render_tag i_render;
#endif
projects / imager.git / blobdiff