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435
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1 /*
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2 * Functions for loading and saving bitmap images
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3 * Programmed and designed by Matti 'ccr' Hamalainen
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4 * (C) Copyright 2012 Tecnic Software productions (TNSP)
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5 *
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6 * Please read file 'COPYING' for information on license and distribution.
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7 */
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8 #ifndef LIBMGFX_H
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9 #define LIBMGFX_H 1
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10
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11 #include "dmlib.h"
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12 #include "dmfile.h"
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13
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14 #ifdef __cplusplus
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15 extern "C" {
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16 #endif
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17
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18
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19 enum
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20 {
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21 IMGFMT_PNG,
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22 IMGFMT_PPM,
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23 IMGFMT_PCX,
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24 IMGFMT_ARAW,
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25
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26 IMGFMT_LAST
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27 };
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28
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29
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30 enum
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31 {
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32 DM_IFMT_PALETTE,
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33 DM_IFMT_RGB,
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34 DM_IFMT_RGBA,
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35 DM_IFMT_RGB_PLANE,
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36 };
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37
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38
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39 // RGBx color struct
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40 typedef struct
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41 {
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42 Uint8 r, g, b, x;
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43 } DMColor;
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44
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45
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46 // Bitmapped image struct (can be one of types specified by DM_IFMT_*)
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47 typedef struct
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48 {
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49 int width, height, pitch;
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50 BOOL constpal;
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51 int ncolors, ctrans;
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52 DMColor *pal;
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53 Uint8 *data;
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54 } DMImage;
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55
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56
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57 typedef struct
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58 {
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59 int scale, nplanes, format;
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60 BOOL interleave, paletted;
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61 } DMImageSpec;
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62
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63
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64 typedef struct
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65 {
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66 char *fext;
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67 char *desc;
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68 int (*probe)(const Uint8 *buf, const size_t len);
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69 int (*read)(const char *filename, DMImage **pimg);
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70 int (*readFILE)(FILE *fp, DMImage **pimg);
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71 int (*write)(const char *filename, DMImage *pimg, DMImageSpec *spec);
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72 int (*writeFILE)(FILE *fp, DMImage *pimg, DMImageSpec *spec);
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73 } DMImageFormat;
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74
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75
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76 // Probe scores
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77 #define DM_PROBE_SCORE_MAX 1000
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78 #define DM_PROBE_SCORE_GOOD 750
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79 #define DM_PROBE_SCORE_AVG 500
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80 #define DM_PROBE_SCORE_MAYBE 250
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81 #define DM_PROBE_SCORE_FALSE 0
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82
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83
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84 extern DMImageFormat dmImageFormatList[IMGFMT_LAST];
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85
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86
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87 DMImage * dmImageAlloc(int width, int height);
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88 void dmImageFree(DMImage *img);
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89 int dmImageGetBytesPerPixel(int format);
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90 int dmImageProbeGeneric(const Uint8 *buf, const size_t len, DMImageFormat **fmt, int *index);
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91
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92
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93 int dmWriteImageData(DMImage *img, void *cbdata, BOOL (*writeRowCB)(void *, Uint8 *, size_t), const DMImageSpec *spec);
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94
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95 int dmWriteIFFMasterRAWPalette(const char *filename, DMImage *img, int ncolors);
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96 int dmWriteIFFMasterRAWImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec);
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97 int dmWriteIFFMasterRAWImage(const char *filename, DMImage *img, DMImageSpec *spec);
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98
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99 int dmWritePPMImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec);
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100 int dmWritePPMImage(const char *filename, DMImage *img, DMImageSpec *spec);
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101
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102 #ifdef DM_USE_LIBPNG
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103 int dmWritePNGImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec);
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104 int dmWritePNGImage(const char *filename, DMImage *img, DMImageSpec *spec);
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105 #endif
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106
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107 int dmWritePCXImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec);
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108 int dmWritePCXImage(const char *filename, DMImage *img, DMImageSpec *spec);
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109 int dmReadPCXImageFILE(FILE *fp, DMImage **pimg);
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110 int dmReadPCXImage(const char *filename, DMImage **pimg);
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111
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112
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113 #ifdef __cplusplus
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114 }
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115 #endif
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116
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117 #endif // LIBMGFX_H
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