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|---|---|---|---|
| 1 | /* GATE PROJECT LICENSE: | ||
| 2 | +----------------------------------------------------------------------------+ | ||
| 3 | | Copyright(c) 2018-2025, Stefan Meislinger | | ||
| 4 | | All rights reserved. | | ||
| 5 | | | | ||
| 6 | | Redistribution and use in source and binary forms, with or without | | ||
| 7 | | modification, are permitted provided that the following conditions are met:| | ||
| 8 | | | | ||
| 9 | | 1. Redistributions of source code must retain the above copyright notice, | | ||
| 10 | | this list of conditions and the following disclaimer. | | ||
| 11 | | 2. Redistributions in binary form must reproduce the above copyright | | ||
| 12 | | notice, this list of conditions and the following disclaimer in the | | ||
| 13 | | documentation and/or other materials provided with the distribution. | | ||
| 14 | | | | ||
| 15 | | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"| | ||
| 16 | | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | | ||
| 17 | | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | | ||
| 18 | | ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | | ||
| 19 | | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | | ||
| 20 | | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | | ||
| 21 | | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | | ||
| 22 | | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | | ||
| 23 | | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | | ||
| 24 | | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | | ||
| 25 | | THE POSSIBILITY OF SUCH DAMAGE. | | ||
| 26 | +----------------------------------------------------------------------------+ | ||
| 27 | */ | ||
| 28 | #include "gate/graphics/imageformats.h" | ||
| 29 | #include "gate/results.h" | ||
| 30 | #include "gate/files.h" | ||
| 31 | #include "gate/graphics/bitmapimages.h" | ||
| 32 | #include "gate/graphics/jpegimages.h" | ||
| 33 | #include "gate/graphics/pixmapimages.h" | ||
| 34 | #include "gate/graphics/pngimages.h" | ||
| 35 | #include "gate/graphics/gifimages.h" | ||
| 36 | |||
| 37 | struct ext_mapping | ||
| 38 | { | ||
| 39 | gate_enumint_t id; | ||
| 40 | char const* ext; | ||
| 41 | gate_image_reader_t reader; | ||
| 42 | gate_image_writer_t writer; | ||
| 43 | }; | ||
| 44 | |||
| 45 | static struct ext_mapping const gate_ext_mapping[] = | ||
| 46 | { | ||
| 47 | { GATE_IMAGEFORMAT_BITMAP, "bmp", &gate_bitmapimage_load, &gate_bitmapimage_save }, | ||
| 48 | { GATE_IMAGEFORMAT_PIXMAP, "xpm", &gate_pixmapimage_load, &gate_pixmapimage_save }, | ||
| 49 | { GATE_IMAGEFORMAT_JPEG, "jpg", &gate_jpegimage_load, &gate_jpegimage_save }, | ||
| 50 | { GATE_IMAGEFORMAT_JPEG, "jpeg", &gate_jpegimage_load, &gate_jpegimage_save }, | ||
| 51 | { GATE_IMAGEFORMAT_GIF, "gif", &gate_gifimage_load, &gate_gifimage_save }, | ||
| 52 | { GATE_IMAGEFORMAT_PNG, "png", &gate_pngimage_load, &gate_pngimage_save } | ||
| 53 | }; | ||
| 54 | static gate_size_t const gate_ext_mapping_count = sizeof(gate_ext_mapping) / sizeof(gate_ext_mapping[0]); | ||
| 55 | |||
| 56 | ✗ | gate_enumint_t gate_imageformat_parse_file_extension(gate_string_t const* file_ext) | |
| 57 | { | ||
| 58 | gate_size_t ndx; | ||
| 59 | char const* ext; | ||
| 60 | gate_size_t ext_len; | ||
| 61 | ✗ | for (ndx = 0; ndx != gate_ext_mapping_count; ++ndx) | |
| 62 | { | ||
| 63 | ✗ | ext = gate_ext_mapping[ndx].ext; | |
| 64 | ✗ | ext_len = gate_str_length(ext); | |
| 65 | ✗ | if (gate_str_compare(file_ext->str, file_ext->length, ext, ext_len) == 0) | |
| 66 | { | ||
| 67 | ✗ | return gate_ext_mapping[ndx].id; | |
| 68 | } | ||
| 69 | ✗ | if (gate_str_ends_with_ic(file_ext->str, file_ext->length, ext, ext_len)) | |
| 70 | { | ||
| 71 | ✗ | if (file_ext->str[file_ext->length - ext_len - 1] == '.') | |
| 72 | { | ||
| 73 | ✗ | return gate_ext_mapping[ndx].id; | |
| 74 | } | ||
| 75 | } | ||
| 76 | } | ||
| 77 | ✗ | return GATE_IMAGEFORMAT_UNKNOWN; | |
| 78 | } | ||
| 79 | ✗ | char const* gate_imageformat_get_file_extension(gate_enumint_t image_format) | |
| 80 | { | ||
| 81 | gate_size_t ndx; | ||
| 82 | ✗ | for (ndx = 0; ndx != gate_ext_mapping_count; ++ndx) | |
| 83 | { | ||
| 84 | ✗ | if (gate_ext_mapping[ndx].id == image_format) | |
| 85 | { | ||
| 86 | ✗ | return gate_ext_mapping[ndx].ext; | |
| 87 | } | ||
| 88 | } | ||
| 89 | ✗ | return NULL; | |
| 90 | } | ||
| 91 | |||
| 92 | ✗ | gate_result_t gate_imageformat_load(gate_enumint_t image_format, gate_stream_t* srcstream, gate_rasterimage_t* image, gate_enumint_t flags) | |
| 93 | { | ||
| 94 | ✗ | gate_result_t result = GATE_RESULT_NOTSUPPORTED; | |
| 95 | gate_size_t ndx; | ||
| 96 | ✗ | for (ndx = 0; ndx != gate_ext_mapping_count; ++ndx) | |
| 97 | { | ||
| 98 | ✗ | if (gate_ext_mapping[ndx].id == image_format) | |
| 99 | { | ||
| 100 | ✗ | result = gate_ext_mapping[ndx].reader(srcstream, image, flags); | |
| 101 | ✗ | break; | |
| 102 | } | ||
| 103 | } | ||
| 104 | ✗ | return result; | |
| 105 | } | ||
| 106 | |||
| 107 | ✗ | gate_result_t gate_imageformat_save(gate_enumint_t image_format, gate_rasterimage_t const* image, gate_stream_t* deststream, gate_enumint_t flags) | |
| 108 | { | ||
| 109 | ✗ | gate_result_t result = GATE_RESULT_FAILED; | |
| 110 | gate_size_t ndx; | ||
| 111 | ✗ | for (ndx = 0; ndx != gate_ext_mapping_count; ++ndx) | |
| 112 | { | ||
| 113 | ✗ | if (gate_ext_mapping[ndx].id == image_format) | |
| 114 | { | ||
| 115 | ✗ | result = gate_ext_mapping[ndx].writer(image, deststream, flags); | |
| 116 | ✗ | break; | |
| 117 | } | ||
| 118 | } | ||
| 119 | ✗ | return result; | |
| 120 | } | ||
| 121 | |||
| 122 | ✗ | gate_result_t gate_imageformat_load_file(gate_string_t const* file_path, gate_rasterimage_t* image, gate_enumint_t flags) | |
| 123 | { | ||
| 124 | gate_result_t result; | ||
| 125 | ✗ | gate_int32_t file_id = gate_imageformat_parse_file_extension(file_path); | |
| 126 | ✗ | gate_controlstream_t* filestream = NULL; | |
| 127 | do | ||
| 128 | { | ||
| 129 | ✗ | if (file_id == GATE_IMAGEFORMAT_UNKNOWN) | |
| 130 | { | ||
| 131 | ✗ | result = GATE_RESULT_NOTSUPPORTED; | |
| 132 | ✗ | break; | |
| 133 | } | ||
| 134 | ✗ | result = gate_file_openstream(file_path, GATE_STREAM_OPEN_READ, &filestream); | |
| 135 | ✗ | GATE_BREAK_IF_FAILED(result); | |
| 136 | ✗ | result = gate_imageformat_load(file_id, (gate_stream_t*)filestream, image, flags); | |
| 137 | } while (0); | ||
| 138 | |||
| 139 | ✗ | if (filestream != NULL) | |
| 140 | { | ||
| 141 | ✗ | gate_object_release(filestream); | |
| 142 | } | ||
| 143 | ✗ | return result; | |
| 144 | } | ||
| 145 | ✗ | gate_result_t gate_imageformat_save_file(gate_string_t const* file_path, gate_rasterimage_t const* image, gate_enumint_t flags) | |
| 146 | { | ||
| 147 | gate_result_t result; | ||
| 148 | ✗ | gate_int32_t file_id = gate_imageformat_parse_file_extension(file_path); | |
| 149 | ✗ | gate_filestream_t* filestream = NULL; | |
| 150 | do | ||
| 151 | { | ||
| 152 | ✗ | if (file_id == GATE_IMAGEFORMAT_UNKNOWN) | |
| 153 | { | ||
| 154 | ✗ | result = GATE_RESULT_NOTSUPPORTED; | |
| 155 | ✗ | break; | |
| 156 | } | ||
| 157 | ✗ | result = gate_file_openstream(file_path, GATE_STREAM_OPEN_WRITE, &filestream); | |
| 158 | ✗ | GATE_BREAK_IF_FAILED(result); | |
| 159 | ✗ | result = gate_imageformat_save(file_id, image, (gate_stream_t*)filestream, flags); | |
| 160 | } while (0); | ||
| 161 | |||
| 162 | ✗ | if (filestream != NULL) | |
| 163 | { | ||
| 164 | ✗ | gate_object_release(filestream); | |
| 165 | } | ||
| 166 | ✗ | return result; | |
| 167 | } | ||
| 168 |