refactoring paths and includes

src/framework/graphics/textureloader.cpp

@@ -0,0 +1,139 @@
+/* The MIT License
+ *
+ * Copyright (c) 2010 OTClient, https://github.com/edubart/otclient
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+#include "textureloader.h"
+#include "texture.h"
+
+#include <png.h>
+
+struct File
+{
+    File() {
+        offset = 0;
+    }
+
+    uchar *data;
+    uint offset;
+};
+
+void png_read_from_mem(png_structp png_ptr, png_bytep data, png_size_t size)
+{
+  File *file = (File*)png_get_io_ptr(png_ptr);
+
+  /* Copy data from image buffer */
+  memcpy(data, file->data + file->offset, size);
+
+  /* Advance in the file */
+  file->offset += size;
+}
+
+Texture *TextureLoader::loadPNG(uchar *fileData)
+{
+    File file;
+    file.data = fileData;
+
+    if(png_sig_cmp(file.data, 0, 8))
+        return NULL;
+
+    png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+    if(!png_ptr)
+        return NULL;
+
+    png_infop info_ptr = png_create_info_struct(png_ptr);
+    if(!info_ptr) {
+        png_destroy_read_struct(&png_ptr, NULL, NULL);
+        return NULL;
+    }
+
+    if(setjmp(png_jmpbuf(png_ptr))) {
+        png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+        return NULL;
+    }
+
+    // Set "png_read" callback function and give source of data
+    png_set_read_fn(png_ptr, (png_voidp *)&file, png_read_from_mem);
+
+    png_read_info(png_ptr, info_ptr);
+
+    int bitDepth = png_get_bit_depth(png_ptr, info_ptr);
+    int colourType = png_get_color_type(png_ptr, info_ptr);
+
+    if(colourType == PNG_COLOR_TYPE_PALETTE)
+        png_set_palette_to_rgb(png_ptr);
+
+    if(bitDepth < 8 && (colourType == PNG_COLOR_TYPE_GRAY || colourType == PNG_COLOR_TYPE_GRAY_ALPHA))
+        png_set_expand_gray_1_2_4_to_8(png_ptr);
+
+    if(png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
+        png_set_tRNS_to_alpha(png_ptr);
+
+    if(bitDepth < 8)
+        png_set_packing(png_ptr);
+    else if(bitDepth == 16)
+        png_set_strip_16(png_ptr);
+
+    png_read_update_info(png_ptr, info_ptr);
+
+    png_uint_32 width, height;
+    png_get_IHDR(png_ptr, info_ptr, &width, &height, &bitDepth, &colourType, NULL, NULL, NULL);
+
+    int components;
+    switch(colourType)
+    {
+        case PNG_COLOR_TYPE_GRAY:
+            components = 1;
+            break;
+        case PNG_COLOR_TYPE_GRAY_ALPHA:
+            components = 2;
+            break;
+        case PNG_COLOR_TYPE_RGB:
+            components = 3;
+            break;
+        case PNG_COLOR_TYPE_RGB_ALPHA:
+            components = 4;
+            break;
+        default:
+            if(png_ptr)
+                png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+            return NULL;
+    };
+
+    uchar *pixels = new uchar[width * height * components];
+
+    png_bytep *row_pointers = new png_bytep[height];
+    for(uint i = 0; i < height; ++i)
+        row_pointers[i] = (png_bytep)(pixels + (i * width * components));
+
+    png_read_image(png_ptr, row_pointers);
+    png_read_end(png_ptr, NULL);
+
+    png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+    delete[] row_pointers;
+
+    Texture *texture = new Texture(width, height, components, pixels);
+
+    delete[] pixels;
+
+    return texture;
+}