timagefile.h - plan9port - [fork] Plan 9 from user space
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timagefile.h (2295B)
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1 typedef struct Rawimage Rawimage;
2
3 struct Rawimage
4 {
5 Rectangle r;
6 uchar *cmap;
7 int cmaplen;
8 int nchans;
9 uchar *chans[4];
10 int chandesc;
11 int chanlen;
12
13 int fields; /* defined by format */
14 int gifflags; /* gif only; graphics control extension flag word */
15 int gifdelay; /* gif only; graphics control extension delay in cs */
16 int giftrindex; /* gif only; graphics control extension transparency index */
17 int gifloopcount; /* number of times to loop in animation; 0 means forever */
18 };
19
20 enum
21 {
22 /* Channel descriptors */
23 CRGB = 0, /* three channels, no map */
24 CYCbCr = 1, /* three channels, no map, level-shifted 601 color space */
25 CY = 2, /* one channel, luminance */
26 CRGB1 = 3, /* one channel, map present */
27 CRGBV = 4, /* one channel, map is RGBV, understood */
28 CRGB24 = 5, /* one channel in correct data order for loadimage(RGB24) */
29 CRGBA32 = 6, /* one channel in correct data order for loadimage(RGBA32) */
30 CYA16 = 7, /* one channel in correct data order for loadimage(Grey8+Alpha8) */
31 CRGBVA16= 8, /* one channel in correct data order for loadimage(CMAP8+Alpha8) */
32
33 /* GIF flags */
34 TRANSP = 1,
35 INPUT = 2,
36 DISPMASK = 7<<2
37 };
38
39
40 enum{ /* PNG flags */
41 II_GAMMA = 1 << 0,
42 II_COMMENT = 1 << 1
43 };
44
45 typedef struct ImageInfo {
46 ulong fields_set;
47 double gamma;
48 char *comment;
49 } ImageInfo;
50
51
52 Rawimage** readjpg(int, int);
53 Rawimage** Breadjpg(Biobuf *b, int);
54 Rawimage** readpng(int, int);
55 Rawimage** Breadpng(Biobuf *b, int);
56 Rawimage** readgif(int, int);
57 Rawimage** readpixmap(int, int);
58 Rawimage* torgbv(Rawimage*, int);
59 Rawimage* totruecolor(Rawimage*, int);
60 int writerawimage(int, Rawimage*);
61 void* _remaperror(char*, ...);
62
63 #ifndef _MEMDRAW_H_
64 typedef struct Memimage Memimage; /* avoid necessity to include memdraw.h */
65 #endif
66
67 char* startgif(Biobuf*, Image*, int);
68 char* writegif(Biobuf*, Image*, char*, int, int);
69 void endgif(Biobuf*);
70 char* memstartgif(Biobuf*, Memimage*, int);
71 char* memwritegif(Biobuf*, Memimage*, char*, int, int);
72 void memendgif(Biobuf*);
73 Image* onechan(Image*);
74 Memimage* memonechan(Memimage*);
75
76 char* writeppm(Biobuf*, Image*, char*);
77 char* memwriteppm(Biobuf*, Memimage*, char*);
78 Image* multichan(Image*);
79 Memimage* memmultichan(Memimage*);
80
81 char* memwritepng(Biobuf*, Memimage*, ImageInfo*);
82 extern int drawlog2[];