/*************************************************************************/ /* resource_saver_png.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* http://www.godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ /* */ /* 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 "resource_saver_png.h" #include "core/image.h" #include "global_config.h" #include "os/file_access.h" #include "scene/resources/texture.h" #include static void _write_png_data(png_structp png_ptr, png_bytep data, png_size_t p_length) { FileAccess *f = (FileAccess *)png_get_io_ptr(png_ptr); f->store_buffer((const uint8_t *)data, p_length); } Error ResourceSaverPNG::save(const String &p_path, const RES &p_resource, uint32_t p_flags) { Ref texture = p_resource; ERR_FAIL_COND_V(!texture.is_valid(), ERR_INVALID_PARAMETER); ERR_EXPLAIN("Can't save empty texture as PNG"); ERR_FAIL_COND_V(!texture->get_width() || !texture->get_height(), ERR_INVALID_PARAMETER); Image img = texture->get_data(); Error err = save_image(p_path, img); if (err == OK) { bool global_filter = GlobalConfig::get_singleton()->get("image_loader/filter"); bool global_mipmaps = GlobalConfig::get_singleton()->get("image_loader/gen_mipmaps"); bool global_repeat = GlobalConfig::get_singleton()->get("image_loader/repeat"); String text; if (global_filter != bool(texture->get_flags() & Texture::FLAG_FILTER)) { text += bool(texture->get_flags() & Texture::FLAG_FILTER) ? "filter=true\n" : "filter=false\n"; } if (global_mipmaps != bool(texture->get_flags() & Texture::FLAG_MIPMAPS)) { text += bool(texture->get_flags() & Texture::FLAG_MIPMAPS) ? "gen_mipmaps=true\n" : "gen_mipmaps=false\n"; } if (global_repeat != bool(texture->get_flags() & Texture::FLAG_REPEAT)) { text += bool(texture->get_flags() & Texture::FLAG_REPEAT) ? "repeat=true\n" : "repeat=false\n"; } if (bool(texture->get_flags() & Texture::FLAG_ANISOTROPIC_FILTER)) { text += "anisotropic=true\n"; } if (bool(texture->get_flags() & Texture::FLAG_CONVERT_TO_LINEAR)) { text += "tolinear=true\n"; } if (bool(texture->get_flags() & Texture::FLAG_MIRRORED_REPEAT)) { text += "mirroredrepeat=true\n"; } if (text != "" || FileAccess::exists(p_path + ".flags")) { FileAccess *f = FileAccess::open(p_path + ".flags", FileAccess::WRITE); if (f) { f->store_string(text); memdelete(f); } } } return err; }; Error ResourceSaverPNG::save_image(const String &p_path, Image &p_img) { if (p_img.is_compressed()) p_img.decompress(); ERR_FAIL_COND_V(p_img.is_compressed(), ERR_INVALID_PARAMETER); png_structp png_ptr; png_infop info_ptr; png_bytep *row_pointers; /* initialize stuff */ png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); ERR_FAIL_COND_V(!png_ptr, ERR_CANT_CREATE); info_ptr = png_create_info_struct(png_ptr); ERR_FAIL_COND_V(!info_ptr, ERR_CANT_CREATE); if (setjmp(png_jmpbuf(png_ptr))) { ERR_FAIL_V(ERR_CANT_OPEN); } //change this Error err; FileAccess *f = FileAccess::open(p_path, FileAccess::WRITE, &err); if (err) { ERR_FAIL_V(err); } png_set_write_fn(png_ptr, f, _write_png_data, NULL); /* write header */ if (setjmp(png_jmpbuf(png_ptr))) { ERR_FAIL_V(ERR_CANT_OPEN); } int pngf = 0; int cs = 0; switch (p_img.get_format()) { case Image::FORMAT_L8: { pngf = PNG_COLOR_TYPE_GRAY; cs = 1; } break; case Image::FORMAT_LA8: { pngf = PNG_COLOR_TYPE_GRAY_ALPHA; cs = 2; } break; case Image::FORMAT_RGB8: { pngf = PNG_COLOR_TYPE_RGB; cs = 3; } break; case Image::FORMAT_RGBA8: { pngf = PNG_COLOR_TYPE_RGB_ALPHA; cs = 4; } break; default: { if (p_img.detect_alpha()) { p_img.convert(Image::FORMAT_RGBA8); pngf = PNG_COLOR_TYPE_RGB_ALPHA; cs = 4; } else { p_img.convert(Image::FORMAT_RGB8); pngf = PNG_COLOR_TYPE_RGB; cs = 3; } } } int w = p_img.get_width(); int h = p_img.get_height(); png_set_IHDR(png_ptr, info_ptr, w, h, 8, pngf, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); png_write_info(png_ptr, info_ptr); /* write bytes */ if (setjmp(png_jmpbuf(png_ptr))) { memdelete(f); ERR_FAIL_V(ERR_CANT_OPEN); } PoolVector::Read r = p_img.get_data().read(); row_pointers = (png_bytep *)memalloc(sizeof(png_bytep) * h); for (int i = 0; i < h; i++) { row_pointers[i] = (png_bytep)&r[i * w * cs]; } png_write_image(png_ptr, row_pointers); memfree(row_pointers); /* end write */ if (setjmp(png_jmpbuf(png_ptr))) { memdelete(f); ERR_FAIL_V(ERR_CANT_OPEN); } png_write_end(png_ptr, NULL); memdelete(f); /* cleanup heap allocation */ png_destroy_write_struct(&png_ptr, &info_ptr); return OK; } bool ResourceSaverPNG::recognize(const RES &p_resource) const { return (p_resource.is_valid() && p_resource->is_class("ImageTexture")); } void ResourceSaverPNG::get_recognized_extensions(const RES &p_resource, List *p_extensions) const { if (p_resource->cast_to()) { p_extensions->push_back("png"); } } ResourceSaverPNG::ResourceSaverPNG() { Image::save_png_func = &save_image; };