projects / imager.git / blame
| Commit | Line | Data |
|---|---|---|
| faa9b3e7 TC |
1 | /* Declares utility functions useful across various files which |
| 2 | aren't meant to be available externally | |
| 3 | */ | |
| 4 | ||
| 5 | #ifndef IMAGEI_H_ | |
| 6 | #define IMAGEI_H_ | |
| 7 | ||
| 8 | #include "image.h" | |
| 9 | ||
| 10 | /* wrapper functions that implement the floating point sample version of a | |
| 11 | function in terms of the 8-bit sample version | |
| 12 | */ | |
| 13 | extern int i_ppixf_fp(i_img *im, int x, int y, i_fcolor *pix); | |
| 14 | extern int i_gpixf_fp(i_img *im, int x, int y, i_fcolor *pix); | |
| 15 | extern int i_plinf_fp(i_img *im, int l, int r, int y, i_fcolor *pix); | |
| 16 | extern int i_glinf_fp(i_img *im, int l, int r, int y, i_fcolor *pix); | |
| 17 | extern int i_gsampf_fp(i_img *im, int l, int r, int y, i_fsample_t *samp, | |
| 18accb2a | 18 | int const *chans, int chan_count); |
| faa9b3e7 TC |
19 | |
| 20 | /* wrapper functions that forward palette calls to the underlying image, | |
| 21 | assuming the underlying image is the first pointer in whatever | |
| 22 | ext_data points at | |
| 23 | */ | |
| 24 | extern int i_addcolors_forward(i_img *im, i_color *, int count); | |
| 25 | extern int i_getcolors_forward(i_img *im, int i, i_color *, int count); | |
| 26 | extern int i_colorcount_forward(i_img *im); | |
| 27 | extern int i_maxcolors_forward(i_img *im); | |
| 28 | extern int i_findcolor_forward(i_img *im, i_color *color, i_palidx *entry); | |
| 29 | extern int i_setcolors_forward(i_img *im, int index, i_color *colors, | |
| 30 | int count); | |
| 31 | ||
| 32 | #define SampleFTo16(num) ((int)((num) * 65535.0 + 0.01)) | |
| 33 | /* we add that little bit to avoid rounding issues */ | |
| 34 | #define Sample16ToF(num) ((num) / 65535.0) | |
| 35 | ||
| 36 | #define SampleFTo8(num) ((int)((num) * 255.0 + 0.01)) | |
| 37 | #define Sample8ToF(num) ((num) / 255.0) | |
| 38 | ||
| 39 | #define Sample16To8(num) ((num) / 257) | |
| 40 | #define Sample8To16(num) ((num) * 257) | |
| 41 | ||
| efdc2568 TC |
42 | extern void i_get_combine(int combine, i_fill_combine_f *, i_fill_combinef_f *); |
| 43 | ||
| 77157728 TC |
44 | extern int |
| 45 | i_int_check_image_file_limits(int width, int height, int channels, int sample_size); | |
| 46 | ||
| b33c08f8 TC |
47 | #include "ext.h" |
| 48 | ||
| 49 | extern UTIL_table_t i_UTIL_table; | |
| 50 | ||
| ffeb4a67 TC |
51 | /* Ideally this will move into imconfig.h if we ever probe */ |
| 52 | #if defined(_GNU_SOURCE) || __STDC_VERSION__ >= 199901L | |
| 53 | /* snprintf() is part of C99 and provided by Glibc */ | |
| 54 | #define HAVE_SNPRINTF | |
| 55 | #endif | |
| 56 | ||
| faa9b3e7 | 57 | #endif |