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| author | David Walter Seikel | 2013-01-13 18:54:10 +1000 |
|---|---|---|
| committer | David Walter Seikel | 2013-01-13 18:54:10 +1000 |
| commit | 959831f4ef5a3e797f576c3de08cd65032c997ad (patch) | |
| tree | e7351908be5995f0b325b2ebeaa02d5a34b82583 /libraries/irrlicht-1.8/source/Irrlicht/libpng/pnginfo.h | |
| parent | Add info about changes to Irrlicht. (diff) | |
| download | SledjHamr-959831f4ef5a3e797f576c3de08cd65032c997ad.zip SledjHamr-959831f4ef5a3e797f576c3de08cd65032c997ad.tar.gz SledjHamr-959831f4ef5a3e797f576c3de08cd65032c997ad.tar.bz2 SledjHamr-959831f4ef5a3e797f576c3de08cd65032c997ad.tar.xz | |
Remove damned ancient DOS line endings from Irrlicht. Hopefully I did not go overboard.
Diffstat (limited to 'libraries/irrlicht-1.8/source/Irrlicht/libpng/pnginfo.h')
| -rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/libpng/pnginfo.h | 538 |
1 files changed, 269 insertions, 269 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/libpng/pnginfo.h b/libraries/irrlicht-1.8/source/Irrlicht/libpng/pnginfo.h index bbfb105..a33bfab 100644 --- a/libraries/irrlicht-1.8/source/Irrlicht/libpng/pnginfo.h +++ b/libraries/irrlicht-1.8/source/Irrlicht/libpng/pnginfo.h | |||
| @@ -1,269 +1,269 @@ | |||
| 1 | 1 | ||
| 2 | /* pnginfo.h - header file for PNG reference library | 2 | /* pnginfo.h - header file for PNG reference library |
| 3 | * | 3 | * |
| 4 | * Copyright (c) 1998-2011 Glenn Randers-Pehrson | 4 | * Copyright (c) 1998-2011 Glenn Randers-Pehrson |
| 5 | * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) | 5 | * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
| 6 | * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) | 6 | * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) |
| 7 | * | 7 | * |
| 8 | * Last changed in libpng 1.5.0 [January 6, 2011] | 8 | * Last changed in libpng 1.5.0 [January 6, 2011] |
| 9 | * | 9 | * |
| 10 | * This code is released under the libpng license. | 10 | * This code is released under the libpng license. |
| 11 | * For conditions of distribution and use, see the disclaimer | 11 | * For conditions of distribution and use, see the disclaimer |
| 12 | * and license in png.h | 12 | * and license in png.h |
| 13 | */ | 13 | */ |
| 14 | 14 | ||
| 15 | /* png_info is a structure that holds the information in a PNG file so | 15 | /* png_info is a structure that holds the information in a PNG file so |
| 16 | * that the application can find out the characteristics of the image. | 16 | * that the application can find out the characteristics of the image. |
| 17 | * If you are reading the file, this structure will tell you what is | 17 | * If you are reading the file, this structure will tell you what is |
| 18 | * in the PNG file. If you are writing the file, fill in the information | 18 | * in the PNG file. If you are writing the file, fill in the information |
| 19 | * you want to put into the PNG file, using png_set_*() functions, then | 19 | * you want to put into the PNG file, using png_set_*() functions, then |
| 20 | * call png_write_info(). | 20 | * call png_write_info(). |
| 21 | * | 21 | * |
| 22 | * The names chosen should be very close to the PNG specification, so | 22 | * The names chosen should be very close to the PNG specification, so |
| 23 | * consult that document for information about the meaning of each field. | 23 | * consult that document for information about the meaning of each field. |
| 24 | * | 24 | * |
| 25 | * With libpng < 0.95, it was only possible to directly set and read the | 25 | * With libpng < 0.95, it was only possible to directly set and read the |
| 26 | * the values in the png_info_struct, which meant that the contents and | 26 | * the values in the png_info_struct, which meant that the contents and |
| 27 | * order of the values had to remain fixed. With libpng 0.95 and later, | 27 | * order of the values had to remain fixed. With libpng 0.95 and later, |
| 28 | * however, there are now functions that abstract the contents of | 28 | * however, there are now functions that abstract the contents of |
| 29 | * png_info_struct from the application, so this makes it easier to use | 29 | * png_info_struct from the application, so this makes it easier to use |
| 30 | * libpng with dynamic libraries, and even makes it possible to use | 30 | * libpng with dynamic libraries, and even makes it possible to use |
| 31 | * libraries that don't have all of the libpng ancillary chunk-handing | 31 | * libraries that don't have all of the libpng ancillary chunk-handing |
| 32 | * functionality. In libpng-1.5.0 this was moved into a separate private | 32 | * functionality. In libpng-1.5.0 this was moved into a separate private |
| 33 | * file that is not visible to applications. | 33 | * file that is not visible to applications. |
| 34 | * | 34 | * |
| 35 | * The following members may have allocated storage attached that should be | 35 | * The following members may have allocated storage attached that should be |
| 36 | * cleaned up before the structure is discarded: palette, trans, text, | 36 | * cleaned up before the structure is discarded: palette, trans, text, |
| 37 | * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile, | 37 | * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile, |
| 38 | * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these | 38 | * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these |
| 39 | * are automatically freed when the info structure is deallocated, if they were | 39 | * are automatically freed when the info structure is deallocated, if they were |
| 40 | * allocated internally by libpng. This behavior can be changed by means | 40 | * allocated internally by libpng. This behavior can be changed by means |
| 41 | * of the png_data_freer() function. | 41 | * of the png_data_freer() function. |
| 42 | * | 42 | * |
| 43 | * More allocation details: all the chunk-reading functions that | 43 | * More allocation details: all the chunk-reading functions that |
| 44 | * change these members go through the corresponding png_set_* | 44 | * change these members go through the corresponding png_set_* |
| 45 | * functions. A function to clear these members is available: see | 45 | * functions. A function to clear these members is available: see |
| 46 | * png_free_data(). The png_set_* functions do not depend on being | 46 | * png_free_data(). The png_set_* functions do not depend on being |
| 47 | * able to point info structure members to any of the storage they are | 47 | * able to point info structure members to any of the storage they are |
| 48 | * passed (they make their own copies), EXCEPT that the png_set_text | 48 | * passed (they make their own copies), EXCEPT that the png_set_text |
| 49 | * functions use the same storage passed to them in the text_ptr or | 49 | * functions use the same storage passed to them in the text_ptr or |
| 50 | * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns | 50 | * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns |
| 51 | * functions do not make their own copies. | 51 | * functions do not make their own copies. |
| 52 | */ | 52 | */ |
| 53 | #ifndef PNGINFO_H | 53 | #ifndef PNGINFO_H |
| 54 | #define PNGINFO_H | 54 | #define PNGINFO_H |
| 55 | 55 | ||
| 56 | struct png_info_def | 56 | struct png_info_def |
| 57 | { | 57 | { |
| 58 | /* the following are necessary for every PNG file */ | 58 | /* the following are necessary for every PNG file */ |
| 59 | png_uint_32 width; /* width of image in pixels (from IHDR) */ | 59 | png_uint_32 width; /* width of image in pixels (from IHDR) */ |
| 60 | png_uint_32 height; /* height of image in pixels (from IHDR) */ | 60 | png_uint_32 height; /* height of image in pixels (from IHDR) */ |
| 61 | png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */ | 61 | png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */ |
| 62 | png_size_t rowbytes; /* bytes needed to hold an untransformed row */ | 62 | png_size_t rowbytes; /* bytes needed to hold an untransformed row */ |
| 63 | png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */ | 63 | png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */ |
| 64 | png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */ | 64 | png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */ |
| 65 | png_uint_16 num_trans; /* number of transparent palette color (tRNS) */ | 65 | png_uint_16 num_trans; /* number of transparent palette color (tRNS) */ |
| 66 | png_byte bit_depth; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */ | 66 | png_byte bit_depth; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */ |
| 67 | png_byte color_type; /* see PNG_COLOR_TYPE_ below (from IHDR) */ | 67 | png_byte color_type; /* see PNG_COLOR_TYPE_ below (from IHDR) */ |
| 68 | /* The following three should have been named *_method not *_type */ | 68 | /* The following three should have been named *_method not *_type */ |
| 69 | png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */ | 69 | png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */ |
| 70 | png_byte filter_type; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */ | 70 | png_byte filter_type; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */ |
| 71 | png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */ | 71 | png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */ |
| 72 | 72 | ||
| 73 | /* The following is informational only on read, and not used on writes. */ | 73 | /* The following is informational only on read, and not used on writes. */ |
| 74 | png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */ | 74 | png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */ |
| 75 | png_byte pixel_depth; /* number of bits per pixel */ | 75 | png_byte pixel_depth; /* number of bits per pixel */ |
| 76 | png_byte spare_byte; /* to align the data, and for future use */ | 76 | png_byte spare_byte; /* to align the data, and for future use */ |
| 77 | png_byte signature[8]; /* magic bytes read by libpng from start of file */ | 77 | png_byte signature[8]; /* magic bytes read by libpng from start of file */ |
| 78 | 78 | ||
| 79 | /* The rest of the data is optional. If you are reading, check the | 79 | /* The rest of the data is optional. If you are reading, check the |
| 80 | * valid field to see if the information in these are valid. If you | 80 | * valid field to see if the information in these are valid. If you |
| 81 | * are writing, set the valid field to those chunks you want written, | 81 | * are writing, set the valid field to those chunks you want written, |
| 82 | * and initialize the appropriate fields below. | 82 | * and initialize the appropriate fields below. |
| 83 | */ | 83 | */ |
| 84 | 84 | ||
| 85 | #if defined(PNG_gAMA_SUPPORTED) | 85 | #if defined(PNG_gAMA_SUPPORTED) |
| 86 | /* The gAMA chunk describes the gamma characteristics of the system | 86 | /* The gAMA chunk describes the gamma characteristics of the system |
| 87 | * on which the image was created, normally in the range [1.0, 2.5]. | 87 | * on which the image was created, normally in the range [1.0, 2.5]. |
| 88 | * Data is valid if (valid & PNG_INFO_gAMA) is non-zero. | 88 | * Data is valid if (valid & PNG_INFO_gAMA) is non-zero. |
| 89 | */ | 89 | */ |
| 90 | png_fixed_point gamma; | 90 | png_fixed_point gamma; |
| 91 | #endif | 91 | #endif |
| 92 | 92 | ||
| 93 | #ifdef PNG_sRGB_SUPPORTED | 93 | #ifdef PNG_sRGB_SUPPORTED |
| 94 | /* GR-P, 0.96a */ | 94 | /* GR-P, 0.96a */ |
| 95 | /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */ | 95 | /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */ |
| 96 | png_byte srgb_intent; /* sRGB rendering intent [0, 1, 2, or 3] */ | 96 | png_byte srgb_intent; /* sRGB rendering intent [0, 1, 2, or 3] */ |
| 97 | #endif | 97 | #endif |
| 98 | 98 | ||
| 99 | #ifdef PNG_TEXT_SUPPORTED | 99 | #ifdef PNG_TEXT_SUPPORTED |
| 100 | /* The tEXt, and zTXt chunks contain human-readable textual data in | 100 | /* The tEXt, and zTXt chunks contain human-readable textual data in |
| 101 | * uncompressed, compressed, and optionally compressed forms, respectively. | 101 | * uncompressed, compressed, and optionally compressed forms, respectively. |
| 102 | * The data in "text" is an array of pointers to uncompressed, | 102 | * The data in "text" is an array of pointers to uncompressed, |
| 103 | * null-terminated C strings. Each chunk has a keyword that describes the | 103 | * null-terminated C strings. Each chunk has a keyword that describes the |
| 104 | * textual data contained in that chunk. Keywords are not required to be | 104 | * textual data contained in that chunk. Keywords are not required to be |
| 105 | * unique, and the text string may be empty. Any number of text chunks may | 105 | * unique, and the text string may be empty. Any number of text chunks may |
| 106 | * be in an image. | 106 | * be in an image. |
| 107 | */ | 107 | */ |
| 108 | int num_text; /* number of comments read or comments to write */ | 108 | int num_text; /* number of comments read or comments to write */ |
| 109 | int max_text; /* current size of text array */ | 109 | int max_text; /* current size of text array */ |
| 110 | png_textp text; /* array of comments read or comments to write */ | 110 | png_textp text; /* array of comments read or comments to write */ |
| 111 | #endif /* PNG_TEXT_SUPPORTED */ | 111 | #endif /* PNG_TEXT_SUPPORTED */ |
| 112 | 112 | ||
| 113 | #ifdef PNG_tIME_SUPPORTED | 113 | #ifdef PNG_tIME_SUPPORTED |
| 114 | /* The tIME chunk holds the last time the displayed image data was | 114 | /* The tIME chunk holds the last time the displayed image data was |
| 115 | * modified. See the png_time struct for the contents of this struct. | 115 | * modified. See the png_time struct for the contents of this struct. |
| 116 | */ | 116 | */ |
| 117 | png_time mod_time; | 117 | png_time mod_time; |
| 118 | #endif | 118 | #endif |
| 119 | 119 | ||
| 120 | #ifdef PNG_sBIT_SUPPORTED | 120 | #ifdef PNG_sBIT_SUPPORTED |
| 121 | /* The sBIT chunk specifies the number of significant high-order bits | 121 | /* The sBIT chunk specifies the number of significant high-order bits |
| 122 | * in the pixel data. Values are in the range [1, bit_depth], and are | 122 | * in the pixel data. Values are in the range [1, bit_depth], and are |
| 123 | * only specified for the channels in the pixel data. The contents of | 123 | * only specified for the channels in the pixel data. The contents of |
| 124 | * the low-order bits is not specified. Data is valid if | 124 | * the low-order bits is not specified. Data is valid if |
| 125 | * (valid & PNG_INFO_sBIT) is non-zero. | 125 | * (valid & PNG_INFO_sBIT) is non-zero. |
| 126 | */ | 126 | */ |
| 127 | png_color_8 sig_bit; /* significant bits in color channels */ | 127 | png_color_8 sig_bit; /* significant bits in color channels */ |
| 128 | #endif | 128 | #endif |
| 129 | 129 | ||
| 130 | #if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \ | 130 | #if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \ |
| 131 | defined(PNG_READ_BACKGROUND_SUPPORTED) | 131 | defined(PNG_READ_BACKGROUND_SUPPORTED) |
| 132 | /* The tRNS chunk supplies transparency data for paletted images and | 132 | /* The tRNS chunk supplies transparency data for paletted images and |
| 133 | * other image types that don't need a full alpha channel. There are | 133 | * other image types that don't need a full alpha channel. There are |
| 134 | * "num_trans" transparency values for a paletted image, stored in the | 134 | * "num_trans" transparency values for a paletted image, stored in the |
| 135 | * same order as the palette colors, starting from index 0. Values | 135 | * same order as the palette colors, starting from index 0. Values |
| 136 | * for the data are in the range [0, 255], ranging from fully transparent | 136 | * for the data are in the range [0, 255], ranging from fully transparent |
| 137 | * to fully opaque, respectively. For non-paletted images, there is a | 137 | * to fully opaque, respectively. For non-paletted images, there is a |
| 138 | * single color specified that should be treated as fully transparent. | 138 | * single color specified that should be treated as fully transparent. |
| 139 | * Data is valid if (valid & PNG_INFO_tRNS) is non-zero. | 139 | * Data is valid if (valid & PNG_INFO_tRNS) is non-zero. |
| 140 | */ | 140 | */ |
| 141 | png_bytep trans_alpha; /* alpha values for paletted image */ | 141 | png_bytep trans_alpha; /* alpha values for paletted image */ |
| 142 | png_color_16 trans_color; /* transparent color for non-palette image */ | 142 | png_color_16 trans_color; /* transparent color for non-palette image */ |
| 143 | #endif | 143 | #endif |
| 144 | 144 | ||
| 145 | #if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) | 145 | #if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) |
| 146 | /* The bKGD chunk gives the suggested image background color if the | 146 | /* The bKGD chunk gives the suggested image background color if the |
| 147 | * display program does not have its own background color and the image | 147 | * display program does not have its own background color and the image |
| 148 | * is needs to composited onto a background before display. The colors | 148 | * is needs to composited onto a background before display. The colors |
| 149 | * in "background" are normally in the same color space/depth as the | 149 | * in "background" are normally in the same color space/depth as the |
| 150 | * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero. | 150 | * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero. |
| 151 | */ | 151 | */ |
| 152 | png_color_16 background; | 152 | png_color_16 background; |
| 153 | #endif | 153 | #endif |
| 154 | 154 | ||
| 155 | #ifdef PNG_oFFs_SUPPORTED | 155 | #ifdef PNG_oFFs_SUPPORTED |
| 156 | /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards | 156 | /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards |
| 157 | * and downwards from the top-left corner of the display, page, or other | 157 | * and downwards from the top-left corner of the display, page, or other |
| 158 | * application-specific co-ordinate space. See the PNG_OFFSET_ defines | 158 | * application-specific co-ordinate space. See the PNG_OFFSET_ defines |
| 159 | * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero. | 159 | * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero. |
| 160 | */ | 160 | */ |
| 161 | png_int_32 x_offset; /* x offset on page */ | 161 | png_int_32 x_offset; /* x offset on page */ |
| 162 | png_int_32 y_offset; /* y offset on page */ | 162 | png_int_32 y_offset; /* y offset on page */ |
| 163 | png_byte offset_unit_type; /* offset units type */ | 163 | png_byte offset_unit_type; /* offset units type */ |
| 164 | #endif | 164 | #endif |
| 165 | 165 | ||
| 166 | #ifdef PNG_pHYs_SUPPORTED | 166 | #ifdef PNG_pHYs_SUPPORTED |
| 167 | /* The pHYs chunk gives the physical pixel density of the image for | 167 | /* The pHYs chunk gives the physical pixel density of the image for |
| 168 | * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_ | 168 | * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_ |
| 169 | * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero. | 169 | * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero. |
| 170 | */ | 170 | */ |
| 171 | png_uint_32 x_pixels_per_unit; /* horizontal pixel density */ | 171 | png_uint_32 x_pixels_per_unit; /* horizontal pixel density */ |
| 172 | png_uint_32 y_pixels_per_unit; /* vertical pixel density */ | 172 | png_uint_32 y_pixels_per_unit; /* vertical pixel density */ |
| 173 | png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */ | 173 | png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */ |
| 174 | #endif | 174 | #endif |
| 175 | 175 | ||
| 176 | #ifdef PNG_hIST_SUPPORTED | 176 | #ifdef PNG_hIST_SUPPORTED |
| 177 | /* The hIST chunk contains the relative frequency or importance of the | 177 | /* The hIST chunk contains the relative frequency or importance of the |
| 178 | * various palette entries, so that a viewer can intelligently select a | 178 | * various palette entries, so that a viewer can intelligently select a |
| 179 | * reduced-color palette, if required. Data is an array of "num_palette" | 179 | * reduced-color palette, if required. Data is an array of "num_palette" |
| 180 | * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST) | 180 | * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST) |
| 181 | * is non-zero. | 181 | * is non-zero. |
| 182 | */ | 182 | */ |
| 183 | png_uint_16p hist; | 183 | png_uint_16p hist; |
| 184 | #endif | 184 | #endif |
| 185 | 185 | ||
| 186 | #ifdef PNG_cHRM_SUPPORTED | 186 | #ifdef PNG_cHRM_SUPPORTED |
| 187 | /* The cHRM chunk describes the CIE color characteristics of the monitor | 187 | /* The cHRM chunk describes the CIE color characteristics of the monitor |
| 188 | * on which the PNG was created. This data allows the viewer to do gamut | 188 | * on which the PNG was created. This data allows the viewer to do gamut |
| 189 | * mapping of the input image to ensure that the viewer sees the same | 189 | * mapping of the input image to ensure that the viewer sees the same |
| 190 | * colors in the image as the creator. Values are in the range | 190 | * colors in the image as the creator. Values are in the range |
| 191 | * [0.0, 0.8]. Data valid if (valid & PNG_INFO_cHRM) non-zero. | 191 | * [0.0, 0.8]. Data valid if (valid & PNG_INFO_cHRM) non-zero. |
| 192 | */ | 192 | */ |
| 193 | png_fixed_point x_white; | 193 | png_fixed_point x_white; |
| 194 | png_fixed_point y_white; | 194 | png_fixed_point y_white; |
| 195 | png_fixed_point x_red; | 195 | png_fixed_point x_red; |
| 196 | png_fixed_point y_red; | 196 | png_fixed_point y_red; |
| 197 | png_fixed_point x_green; | 197 | png_fixed_point x_green; |
| 198 | png_fixed_point y_green; | 198 | png_fixed_point y_green; |
| 199 | png_fixed_point x_blue; | 199 | png_fixed_point x_blue; |
| 200 | png_fixed_point y_blue; | 200 | png_fixed_point y_blue; |
| 201 | #endif | 201 | #endif |
| 202 | 202 | ||
| 203 | #ifdef PNG_pCAL_SUPPORTED | 203 | #ifdef PNG_pCAL_SUPPORTED |
| 204 | /* The pCAL chunk describes a transformation between the stored pixel | 204 | /* The pCAL chunk describes a transformation between the stored pixel |
| 205 | * values and original physical data values used to create the image. | 205 | * values and original physical data values used to create the image. |
| 206 | * The integer range [0, 2^bit_depth - 1] maps to the floating-point | 206 | * The integer range [0, 2^bit_depth - 1] maps to the floating-point |
| 207 | * range given by [pcal_X0, pcal_X1], and are further transformed by a | 207 | * range given by [pcal_X0, pcal_X1], and are further transformed by a |
| 208 | * (possibly non-linear) transformation function given by "pcal_type" | 208 | * (possibly non-linear) transformation function given by "pcal_type" |
| 209 | * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_ | 209 | * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_ |
| 210 | * defines below, and the PNG-Group's PNG extensions document for a | 210 | * defines below, and the PNG-Group's PNG extensions document for a |
| 211 | * complete description of the transformations and how they should be | 211 | * complete description of the transformations and how they should be |
| 212 | * implemented, and for a description of the ASCII parameter strings. | 212 | * implemented, and for a description of the ASCII parameter strings. |
| 213 | * Data values are valid if (valid & PNG_INFO_pCAL) non-zero. | 213 | * Data values are valid if (valid & PNG_INFO_pCAL) non-zero. |
| 214 | */ | 214 | */ |
| 215 | png_charp pcal_purpose; /* pCAL chunk description string */ | 215 | png_charp pcal_purpose; /* pCAL chunk description string */ |
| 216 | png_int_32 pcal_X0; /* minimum value */ | 216 | png_int_32 pcal_X0; /* minimum value */ |
| 217 | png_int_32 pcal_X1; /* maximum value */ | 217 | png_int_32 pcal_X1; /* maximum value */ |
| 218 | png_charp pcal_units; /* Latin-1 string giving physical units */ | 218 | png_charp pcal_units; /* Latin-1 string giving physical units */ |
| 219 | png_charpp pcal_params; /* ASCII strings containing parameter values */ | 219 | png_charpp pcal_params; /* ASCII strings containing parameter values */ |
| 220 | png_byte pcal_type; /* equation type (see PNG_EQUATION_ below) */ | 220 | png_byte pcal_type; /* equation type (see PNG_EQUATION_ below) */ |
| 221 | png_byte pcal_nparams; /* number of parameters given in pcal_params */ | 221 | png_byte pcal_nparams; /* number of parameters given in pcal_params */ |
| 222 | #endif | 222 | #endif |
| 223 | 223 | ||
| 224 | /* New members added in libpng-1.0.6 */ | 224 | /* New members added in libpng-1.0.6 */ |
| 225 | png_uint_32 free_me; /* flags items libpng is responsible for freeing */ | 225 | png_uint_32 free_me; /* flags items libpng is responsible for freeing */ |
| 226 | 226 | ||
| 227 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \ | 227 | #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \ |
| 228 | defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED) | 228 | defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED) |
| 229 | /* Storage for unknown chunks that the library doesn't recognize. */ | 229 | /* Storage for unknown chunks that the library doesn't recognize. */ |
| 230 | png_unknown_chunkp unknown_chunks; | 230 | png_unknown_chunkp unknown_chunks; |
| 231 | int unknown_chunks_num; | 231 | int unknown_chunks_num; |
| 232 | #endif | 232 | #endif |
| 233 | 233 | ||
| 234 | #ifdef PNG_iCCP_SUPPORTED | 234 | #ifdef PNG_iCCP_SUPPORTED |
| 235 | /* iCCP chunk data. */ | 235 | /* iCCP chunk data. */ |
| 236 | png_charp iccp_name; /* profile name */ | 236 | png_charp iccp_name; /* profile name */ |
| 237 | png_bytep iccp_profile; /* International Color Consortium profile data */ | 237 | png_bytep iccp_profile; /* International Color Consortium profile data */ |
| 238 | png_uint_32 iccp_proflen; /* ICC profile data length */ | 238 | png_uint_32 iccp_proflen; /* ICC profile data length */ |
| 239 | png_byte iccp_compression; /* Always zero */ | 239 | png_byte iccp_compression; /* Always zero */ |
| 240 | #endif | 240 | #endif |
| 241 | 241 | ||
| 242 | #ifdef PNG_sPLT_SUPPORTED | 242 | #ifdef PNG_sPLT_SUPPORTED |
| 243 | /* Data on sPLT chunks (there may be more than one). */ | 243 | /* Data on sPLT chunks (there may be more than one). */ |
| 244 | png_sPLT_tp splt_palettes; | 244 | png_sPLT_tp splt_palettes; |
| 245 | png_uint_32 splt_palettes_num; | 245 | png_uint_32 splt_palettes_num; |
| 246 | #endif | 246 | #endif |
| 247 | 247 | ||
| 248 | #ifdef PNG_sCAL_SUPPORTED | 248 | #ifdef PNG_sCAL_SUPPORTED |
| 249 | /* The sCAL chunk describes the actual physical dimensions of the | 249 | /* The sCAL chunk describes the actual physical dimensions of the |
| 250 | * subject matter of the graphic. The chunk contains a unit specification | 250 | * subject matter of the graphic. The chunk contains a unit specification |
| 251 | * a byte value, and two ASCII strings representing floating-point | 251 | * a byte value, and two ASCII strings representing floating-point |
| 252 | * values. The values are width and height corresponsing to one pixel | 252 | * values. The values are width and height corresponsing to one pixel |
| 253 | * in the image. Data values are valid if (valid & PNG_INFO_sCAL) is | 253 | * in the image. Data values are valid if (valid & PNG_INFO_sCAL) is |
| 254 | * non-zero. | 254 | * non-zero. |
| 255 | */ | 255 | */ |
| 256 | png_byte scal_unit; /* unit of physical scale */ | 256 | png_byte scal_unit; /* unit of physical scale */ |
| 257 | png_charp scal_s_width; /* string containing height */ | 257 | png_charp scal_s_width; /* string containing height */ |
| 258 | png_charp scal_s_height; /* string containing width */ | 258 | png_charp scal_s_height; /* string containing width */ |
| 259 | #endif | 259 | #endif |
| 260 | 260 | ||
| 261 | #ifdef PNG_INFO_IMAGE_SUPPORTED | 261 | #ifdef PNG_INFO_IMAGE_SUPPORTED |
| 262 | /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS) | 262 | /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS) |
| 263 | non-zero */ | 263 | non-zero */ |
| 264 | /* Data valid if (valid & PNG_INFO_IDAT) non-zero */ | 264 | /* Data valid if (valid & PNG_INFO_IDAT) non-zero */ |
| 265 | png_bytepp row_pointers; /* the image bits */ | 265 | png_bytepp row_pointers; /* the image bits */ |
| 266 | #endif | 266 | #endif |
| 267 | 267 | ||
| 268 | }; | 268 | }; |
| 269 | #endif /* PNGINFO_H */ | 269 | #endif /* PNGINFO_H */ |