1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/*************************************************************************/
/* image_loader_webp.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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 "image_loader_webp.h"
#include "core/config/project_settings.h"
#include "core/io/marshalls.h"
#include "core/os/os.h"
#include "core/string/print_string.h"
#include <stdlib.h>
#include <webp/decode.h>
#include <webp/encode.h>
static Vector<uint8_t> _webp_lossy_pack(const Ref<Image> &p_image, float p_quality) {
ERR_FAIL_COND_V(p_image.is_null() || p_image->is_empty(), Vector<uint8_t>());
Ref<Image> img = p_image->duplicate();
if (img->detect_alpha()) {
img->convert(Image::FORMAT_RGBA8);
} else {
img->convert(Image::FORMAT_RGB8);
}
Size2 s(img->get_width(), img->get_height());
Vector<uint8_t> data = img->get_data();
const uint8_t *r = data.ptr();
uint8_t *dst_buff = nullptr;
size_t dst_size = 0;
if (img->get_format() == Image::FORMAT_RGB8) {
dst_size = WebPEncodeRGB(r, s.width, s.height, 3 * s.width, CLAMP(p_quality * 100.0, 0, 100.0), &dst_buff);
} else {
dst_size = WebPEncodeRGBA(r, s.width, s.height, 4 * s.width, CLAMP(p_quality * 100.0, 0, 100.0), &dst_buff);
}
ERR_FAIL_COND_V(dst_size == 0, Vector<uint8_t>());
Vector<uint8_t> dst;
dst.resize(4 + dst_size);
uint8_t *w = dst.ptrw();
w[0] = 'W';
w[1] = 'E';
w[2] = 'B';
w[3] = 'P';
memcpy(&w[4], dst_buff, dst_size);
WebPFree(dst_buff);
return dst;
}
static Vector<uint8_t> _webp_lossless_pack(const Ref<Image> &p_image) {
ERR_FAIL_COND_V(p_image.is_null() || p_image->is_empty(), Vector<uint8_t>());
int compression_level = ProjectSettings::get_singleton()->get("rendering/textures/lossless_compression/webp_compression_level");
compression_level = CLAMP(compression_level, 0, 9);
Ref<Image> img = p_image->duplicate();
if (img->detect_alpha()) {
img->convert(Image::FORMAT_RGBA8);
} else {
img->convert(Image::FORMAT_RGB8);
}
Size2 s(img->get_width(), img->get_height());
Vector<uint8_t> data = img->get_data();
const uint8_t *r = data.ptr();
// we need to use the more complex API in order to access the 'exact' flag...
WebPConfig config;
WebPPicture pic;
if (!WebPConfigInit(&config) || !WebPConfigLosslessPreset(&config, compression_level) || !WebPPictureInit(&pic)) {
ERR_FAIL_V(Vector<uint8_t>());
}
WebPMemoryWriter wrt;
config.exact = 1;
pic.use_argb = 1;
pic.width = s.width;
pic.height = s.height;
pic.writer = WebPMemoryWrite;
pic.custom_ptr = &wrt;
WebPMemoryWriterInit(&wrt);
bool success_import = false;
if (img->get_format() == Image::FORMAT_RGB8) {
success_import = WebPPictureImportRGB(&pic, r, 3 * s.width);
} else {
success_import = WebPPictureImportRGBA(&pic, r, 4 * s.width);
}
bool success_encode = false;
if (success_import) {
success_encode = WebPEncode(&config, &pic);
}
WebPPictureFree(&pic);
if (!success_encode) {
WebPMemoryWriterClear(&wrt);
ERR_FAIL_V_MSG(Vector<uint8_t>(), "WebP packing failed.");
}
// copy from wrt
Vector<uint8_t> dst;
dst.resize(4 + wrt.size);
uint8_t *w = dst.ptrw();
w[0] = 'W';
w[1] = 'E';
w[2] = 'B';
w[3] = 'P';
memcpy(&w[4], wrt.mem, wrt.size);
WebPMemoryWriterClear(&wrt);
return dst;
}
static Ref<Image> _webp_unpack(const Vector<uint8_t> &p_buffer) {
int size = p_buffer.size() - 4;
ERR_FAIL_COND_V(size <= 0, Ref<Image>());
const uint8_t *r = p_buffer.ptr();
ERR_FAIL_COND_V(r[0] != 'W' || r[1] != 'E' || r[2] != 'B' || r[3] != 'P', Ref<Image>());
WebPBitstreamFeatures features;
if (WebPGetFeatures(&r[4], size, &features) != VP8_STATUS_OK) {
ERR_FAIL_V_MSG(Ref<Image>(), "Error unpacking WEBP image.");
}
/*
print_line("width: "+itos(features.width));
print_line("height: "+itos(features.height));
print_line("alpha: "+itos(features.has_alpha));
*/
Vector<uint8_t> dst_image;
int datasize = features.width * features.height * (features.has_alpha ? 4 : 3);
dst_image.resize(datasize);
uint8_t *dst_w = dst_image.ptrw();
bool errdec = false;
if (features.has_alpha) {
errdec = WebPDecodeRGBAInto(&r[4], size, dst_w, datasize, 4 * features.width) == nullptr;
} else {
errdec = WebPDecodeRGBInto(&r[4], size, dst_w, datasize, 3 * features.width) == nullptr;
}
ERR_FAIL_COND_V_MSG(errdec, Ref<Image>(), "Failed decoding WebP image.");
Ref<Image> img = memnew(Image(features.width, features.height, 0, features.has_alpha ? Image::FORMAT_RGBA8 : Image::FORMAT_RGB8, dst_image));
return img;
}
Error webp_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p_buffer_len) {
ERR_FAIL_NULL_V(p_image, ERR_INVALID_PARAMETER);
WebPBitstreamFeatures features;
if (WebPGetFeatures(p_buffer, p_buffer_len, &features) != VP8_STATUS_OK) {
ERR_FAIL_V(ERR_FILE_CORRUPT);
}
Vector<uint8_t> dst_image;
int datasize = features.width * features.height * (features.has_alpha ? 4 : 3);
dst_image.resize(datasize);
uint8_t *dst_w = dst_image.ptrw();
bool errdec = false;
if (features.has_alpha) {
errdec = WebPDecodeRGBAInto(p_buffer, p_buffer_len, dst_w, datasize, 4 * features.width) == nullptr;
} else {
errdec = WebPDecodeRGBInto(p_buffer, p_buffer_len, dst_w, datasize, 3 * features.width) == nullptr;
}
ERR_FAIL_COND_V_MSG(errdec, ERR_FILE_CORRUPT, "Failed decoding WebP image.");
p_image->create(features.width, features.height, false, features.has_alpha ? Image::FORMAT_RGBA8 : Image::FORMAT_RGB8, dst_image);
return OK;
}
static Ref<Image> _webp_mem_loader_func(const uint8_t *p_png, int p_size) {
Ref<Image> img;
img.instantiate();
Error err = webp_load_image_from_buffer(img.ptr(), p_png, p_size);
ERR_FAIL_COND_V(err, Ref<Image>());
return img;
}
Error ImageLoaderWEBP::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) {
Vector<uint8_t> src_image;
uint64_t src_image_len = f->get_length();
ERR_FAIL_COND_V(src_image_len == 0, ERR_FILE_CORRUPT);
src_image.resize(src_image_len);
uint8_t *w = src_image.ptrw();
f->get_buffer(&w[0], src_image_len);
f->close();
Error err = webp_load_image_from_buffer(p_image.ptr(), w, src_image_len);
return err;
}
void ImageLoaderWEBP::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("webp");
}
ImageLoaderWEBP::ImageLoaderWEBP() {
Image::_webp_mem_loader_func = _webp_mem_loader_func;
Image::webp_lossy_packer = _webp_lossy_pack;
Image::webp_lossless_packer = _webp_lossless_pack;
Image::webp_unpacker = _webp_unpack;
}
|