1 | /* |
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2 | * libpipi Pathetic image processing interface library |
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3 | * Copyright (c) 2004-2008 Sam Hocevar <sam@zoy.org> |
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4 | * All Rights Reserved |
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5 | * |
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6 | * $Id$ |
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7 | * |
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8 | * This library is free software. It comes without any warranty, to |
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9 | * the extent permitted by applicable law. You can redistribute it |
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10 | * and/or modify it under the terms of the Do What The Fuck You Want |
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11 | * To Public License, Version 2, as published by Sam Hocevar. See |
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12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
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13 | */ |
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14 | |
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15 | /* |
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16 | * gdi.c: Windows GDI I/O functions (BMP only) |
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17 | */ |
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18 | |
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19 | #include "config.h" |
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20 | |
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21 | #include <stdio.h> |
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22 | #include <stdlib.h> |
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23 | #include <string.h> |
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24 | |
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25 | #include <windows.h> |
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26 | |
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27 | #include <Gdiplus.h> |
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28 | |
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29 | extern "C" { |
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30 | #include "pipi.h" |
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31 | #include "pipi_internals.h" |
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32 | } |
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33 | |
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34 | extern "C" pipi_image_t *pipi_load_gdiplus(const char *name) |
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35 | { |
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36 | size_t len; |
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37 | len = mbstowcs(NULL, name, 0); |
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38 | wchar_t *wname = new wchar_t[len + 1]; |
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39 | if(mbstowcs(wname, name, len + 1) == (size_t)-1) |
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40 | { |
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41 | delete[] wname; |
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42 | return NULL; |
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43 | } |
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44 | |
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45 | ULONG_PTR token; |
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46 | Gdiplus::GdiplusStartupInput input; |
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47 | Gdiplus::GdiplusStartup(&token, &input, NULL); |
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48 | |
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49 | Gdiplus::Bitmap *b = Gdiplus::Bitmap::FromFile(wname, 0); |
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50 | if(!b) |
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51 | { |
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52 | delete[] wname; |
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53 | return NULL; |
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54 | } |
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55 | delete[] wname; |
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56 | |
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57 | Gdiplus::BitmapData bdata; |
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58 | Gdiplus::Rect rect(0, 0, b->GetWidth(), b->GetHeight()); |
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59 | |
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60 | if(b->LockBits(rect, Gdiplus::ImageLockModeRead, |
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61 | PixelFormat32bppARGB, &bdata) != Gdiplus::Ok) |
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62 | { |
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63 | delete b; |
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64 | return NULL; |
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65 | } |
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66 | |
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67 | pipi_image_t *img = pipi_new(b->GetWidth(), b->GetHeight()); |
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68 | pipi_pixels_t *p = pipi_getpixels(img, PIPI_PIXELS_RGBA_C); |
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69 | memcpy(p->pixels, bdata.Scan0, bdata.Width * bdata.Height * 4); |
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70 | |
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71 | b->UnlockBits(&bdata); |
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72 | delete b; |
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73 | |
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74 | img->codec_priv = NULL; |
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75 | |
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76 | img->wrap = 0; |
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77 | img->u8 = 1; |
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78 | |
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79 | return img; |
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80 | } |
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81 | |
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82 | extern "C" int pipi_save_gdiplus(pipi_image_t *img, const char *name) |
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83 | { |
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84 | wchar_t const *fmt; |
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85 | if(strstr(name, ".gif")) |
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86 | fmt = L"image/gif"; |
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87 | else if(strstr(name, ".jpeg") || strstr(name, ".jpeg")) |
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88 | fmt = L"image/jpeg"; |
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89 | else if(strstr(name, ".png")) |
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90 | fmt = L"image/png"; |
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91 | else if(strstr(name, ".tiff")) |
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92 | fmt = L"image/tiff"; |
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93 | |
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94 | unsigned int num = 0, size = 0; |
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95 | Gdiplus::GetImageEncodersSize(&num, &size); |
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96 | if(size == 0) |
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97 | return -1; |
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98 | Gdiplus::ImageCodecInfo *codecs |
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99 | = (Gdiplus::ImageCodecInfo *)(malloc(size)); |
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100 | if(!codecs) |
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101 | return -1; |
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102 | Gdiplus::GetImageEncoders(num, size, codecs); |
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103 | CLSID clsid; |
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104 | for(unsigned int i = 0; i < num; i++) |
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105 | { |
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106 | if(wcscmp(codecs[i].MimeType, fmt) == 0) |
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107 | { |
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108 | clsid = codecs[i].Clsid; |
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109 | break; |
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110 | } |
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111 | } |
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112 | |
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113 | size_t len; |
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114 | len = mbstowcs(NULL, name, 0); |
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115 | wchar_t *wname = new wchar_t[len + 1]; |
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116 | if(mbstowcs(wname, name, len + 1) == (size_t)-1) |
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117 | { |
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118 | delete[] wname; |
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119 | return -1; |
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120 | } |
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121 | |
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122 | ULONG_PTR token; |
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123 | Gdiplus::GdiplusStartupInput input; |
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124 | Gdiplus::GdiplusStartup(&token, &input, NULL); |
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125 | |
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126 | Gdiplus::Bitmap *b = new Gdiplus::Bitmap(img->w, img->h, |
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127 | PixelFormat32bppARGB); |
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128 | |
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129 | Gdiplus::BitmapData bdata; |
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130 | Gdiplus::Rect rect(0, 0, img->w, img->h); |
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131 | |
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132 | if(b->LockBits(rect, (unsigned int)Gdiplus::ImageLockModeWrite, |
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133 | PixelFormat32bppARGB, &bdata) != Gdiplus::Ok) |
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134 | { |
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135 | delete b; |
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136 | return -1; |
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137 | } |
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138 | |
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139 | pipi_pixels_t *p = pipi_getpixels(img, PIPI_PIXELS_RGBA_C); |
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140 | memcpy(bdata.Scan0, p->pixels, bdata.Width * bdata.Height * 4); |
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141 | |
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142 | b->UnlockBits(&bdata); |
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143 | |
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144 | if(b->Save(wname, &clsid, NULL) != Gdiplus::Ok) |
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145 | { |
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146 | delete[] wname; |
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147 | delete b; |
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148 | return -1; |
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149 | } |
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150 | delete[] wname; |
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151 | delete b; |
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152 | |
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153 | return 0; |
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154 | } |
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155 | |
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156 | /* |
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157 | * XXX: The following functions are local. |
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158 | */ |
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159 | |
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