1/**************************************************************************/
2/* resource_saver_png.cpp */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
18/* */
19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
24/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
25/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
26/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
27/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#include "resource_saver_png.h"
32
33#include "core/io/file_access.h"
34#include "core/io/image.h"
35#include "drivers/png/png_driver_common.h"
36#include "scene/resources/image_texture.h"
37
38Error ResourceSaverPNG::save(const Ref<Resource> &p_resource, const String &p_path, uint32_t p_flags) {
39 Ref<ImageTexture> texture = p_resource;
40
41 ERR_FAIL_COND_V_MSG(!texture.is_valid(), ERR_INVALID_PARAMETER, "Can't save invalid texture as PNG.");
42 ERR_FAIL_COND_V_MSG(!texture->get_width(), ERR_INVALID_PARAMETER, "Can't save empty texture as PNG.");
43
44 Ref<Image> img = texture->get_image();
45
46 Error err = save_image(p_path, img);
47
48 return err;
49}
50
51Error ResourceSaverPNG::save_image(const String &p_path, const Ref<Image> &p_img) {
52 Vector<uint8_t> buffer;
53 Error err = PNGDriverCommon::image_to_png(p_img, buffer);
54 ERR_FAIL_COND_V_MSG(err, err, "Can't convert image to PNG.");
55 Ref<FileAccess> file = FileAccess::open(p_path, FileAccess::WRITE, &err);
56 ERR_FAIL_COND_V_MSG(err, err, vformat("Can't save PNG at path: '%s'.", p_path));
57
58 const uint8_t *reader = buffer.ptr();
59
60 file->store_buffer(reader, buffer.size());
61 if (file->get_error() != OK && file->get_error() != ERR_FILE_EOF) {
62 return ERR_CANT_CREATE;
63 }
64
65 return OK;
66}
67
68Vector<uint8_t> ResourceSaverPNG::save_image_to_buffer(const Ref<Image> &p_img) {
69 Vector<uint8_t> buffer;
70 Error err = PNGDriverCommon::image_to_png(p_img, buffer);
71 ERR_FAIL_COND_V_MSG(err, Vector<uint8_t>(), "Can't convert image to PNG.");
72 return buffer;
73}
74
75bool ResourceSaverPNG::recognize(const Ref<Resource> &p_resource) const {
76 return (p_resource.is_valid() && p_resource->is_class("ImageTexture"));
77}
78
79void ResourceSaverPNG::get_recognized_extensions(const Ref<Resource> &p_resource, List<String> *p_extensions) const {
80 if (Object::cast_to<ImageTexture>(*p_resource)) {
81 p_extensions->push_back("png");
82 }
83}
84
85ResourceSaverPNG::ResourceSaverPNG() {
86 Image::save_png_func = &save_image;
87 Image::save_png_buffer_func = &save_image_to_buffer;
88}
89