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
241
242
243
244
245
246
247
248
249
|
#include "../include/AsyncImageLoader.hpp"
#include "../include/DownloadUtils.hpp"
#include "../include/Program.hpp"
#include "../include/ImageUtils.hpp"
#include "../include/Scale.hpp"
#include "../include/SfmlFixes.hpp"
#include "../external/hash-library/sha256.h"
#include <sys/stat.h>
#include <malloc.h>
#include <assert.h>
namespace QuickMedia {
bool create_thumbnail(const Path &thumbnail_path, const Path &thumbnail_path_resized, sf::Vector2i resize_target_size, ContentType content_type) {
Path input_path = thumbnail_path;
// TODO: Remove this when imagemagick supports webp
// Convert webp to png
bool remove_tmp_input = false;
if(content_type == ContentType::IMAGE_WEBP) {
Path result_path_tmp = thumbnail_path_resized;
result_path_tmp.append(".tmp.png");
const char *args[] = { "ffmpeg", "-y", "-v", "quiet", "-i", input_path.data.c_str(), "--", result_path_tmp.data.c_str(), nullptr};
int res = exec_program(args, nullptr, nullptr);
if(res != 0)
return false;
input_path = std::move(result_path_tmp);
remove_tmp_input = true;
}
// > is to only shrink image if smaller than the target size
std::string new_size = std::to_string(resize_target_size.x) + "x" + std::to_string(resize_target_size.y) + ">";
// We only want the first frame if its a gif
Path thumbnail_path_first_frame = input_path;
thumbnail_path_first_frame.append("[0]");
Path result_path_tmp = thumbnail_path_resized;
result_path_tmp.append(".tmp");
const char *args[] = { "convert", thumbnail_path_first_frame.data.c_str(), "-thumbnail", new_size.c_str(), result_path_tmp.data.c_str(), nullptr};
int convert_res = exec_program(args, nullptr, nullptr);
if(remove_tmp_input)
remove(input_path.data.c_str());
if(convert_res == 0 && rename_atomic(result_path_tmp.data.c_str(), thumbnail_path_resized.data.c_str()) == 0)
return true;
else
return false;
}
// Create thumbnail and load it. On failure load the original image
static void create_thumbnail(const Path &thumbnail_path, const Path &thumbnail_path_resized, ThumbnailData *thumbnail_data, sf::Vector2i resize_target_size) {
FileAnalyzer file_analyzer;
if(!file_analyzer.load_file(thumbnail_path.data.c_str(), false)) {
fprintf(stderr, "Failed to convert %s to a thumbnail, using the original image\n", thumbnail_path.data.c_str());
thumbnail_data->loading_state = LoadingState::FINISHED_LOADING;
return;
}
if(is_content_type_video(file_analyzer.get_content_type())) {
if(video_get_first_frame(thumbnail_path.data.c_str(), thumbnail_path_resized.data.c_str(), resize_target_size.x, resize_target_size.y))
load_image_from_file(*thumbnail_data->image, thumbnail_path_resized.data);
thumbnail_data->loading_state = LoadingState::FINISHED_LOADING;
return;
}
if(create_thumbnail(thumbnail_path, thumbnail_path_resized, resize_target_size, file_analyzer.get_content_type())) {
load_image_from_file(*thumbnail_data->image, thumbnail_path_resized.data);
} else {
load_image_from_file(*thumbnail_data->image, thumbnail_path.data);
fprintf(stderr, "Failed to convert %s to a thumbnail, using the original image\n", thumbnail_path.data.c_str());
}
thumbnail_data->loading_state = LoadingState::FINISHED_LOADING;
}
AsyncImageLoader& AsyncImageLoader::get_instance() {
static AsyncImageLoader *instance = nullptr;
if(!instance)
instance = new AsyncImageLoader();
return *instance;
}
AsyncImageLoader::AsyncImageLoader() {
for(int i = 0; i < NUM_IMAGE_LOAD_THREADS; ++i) {
loading_image[i] = false;
}
load_image_thread = std::thread([this]() mutable {
std::optional<ThumbnailLoadData> thumbnail_load_data_opt;
while(true) {
thumbnail_load_data_opt = image_load_queue.pop_wait();
if(!thumbnail_load_data_opt)
break;
ThumbnailLoadData &thumbnail_load_data = thumbnail_load_data_opt.value();
thumbnail_load_data.thumbnail_data->image = std::make_unique<sf::Image>();
Path thumbnail_path_resized = thumbnail_load_data.thumbnail_path;
if(thumbnail_load_data.resize_target_size.x != 0 && thumbnail_load_data.resize_target_size.y != 0)
thumbnail_path_resized.append("_" + std::to_string(thumbnail_load_data.resize_target_size.x) + "x" + std::to_string(thumbnail_load_data.resize_target_size.y));
if(get_file_type(thumbnail_path_resized) == FileType::REGULAR) {
load_image_from_file(*thumbnail_load_data.thumbnail_data->image, thumbnail_path_resized.data);
thumbnail_load_data.thumbnail_data->loading_state = LoadingState::FINISHED_LOADING;
fprintf(stderr, "Loaded %s from thumbnail cache\n", thumbnail_path_resized.data.c_str());
continue;
}
Path thumbnail_original_path;
if(thumbnail_load_data.local)
thumbnail_original_path = thumbnail_load_data.path;
else
thumbnail_original_path = thumbnail_load_data.thumbnail_path;
if(thumbnail_load_data.resize_target_size.x != 0 && thumbnail_load_data.resize_target_size.y != 0)
create_thumbnail(thumbnail_original_path, thumbnail_path_resized, thumbnail_load_data.thumbnail_data.get(), thumbnail_load_data.resize_target_size);
else
load_image_from_file(*thumbnail_load_data.thumbnail_data->image, thumbnail_original_path.data);
thumbnail_load_data.thumbnail_data->loading_state = LoadingState::FINISHED_LOADING;
}
});
}
AsyncImageLoader::~AsyncImageLoader() {
image_load_queue.close();
if(load_image_thread.joinable()) {
program_kill_in_thread(load_image_thread.get_id());
load_image_thread.join();
}
for(size_t i = 0; i < NUM_IMAGE_LOAD_THREADS; ++i) {
if(download_image_thread[i].joinable()) {
program_kill_in_thread(download_image_thread[i].get_id());
download_image_thread[i].join();
}
}
}
void AsyncImageLoader::load_thumbnail(const std::string &url, bool local, sf::Vector2i resize_target_size, std::shared_ptr<ThumbnailData> thumbnail_data) {
if(thumbnail_data->loading_state != LoadingState::NOT_LOADED)
return;
if(url.empty()) {
thumbnail_data->image = std::make_unique<sf::Image>();
thumbnail_data->loading_state = LoadingState::FINISHED_LOADING;
return;
}
SHA256 sha256;
sha256.add(url.data(), url.size());
Path thumbnail_path = get_cache_dir().join("thumbnails").join(sha256.getHash());
if(local) {
struct stat file_stat;
if(stat(url.c_str(), &file_stat) != 0 || !S_ISREG(file_stat.st_mode)) {
thumbnail_data->image = std::make_unique<sf::Image>();
thumbnail_data->loading_state = LoadingState::FINISHED_LOADING;
return;
}
thumbnail_path.append("_" + std::to_string(file_stat.st_mtim.tv_sec));
thumbnail_data->loading_state = LoadingState::LOADING;
image_load_queue.push({ url, thumbnail_path, true, thumbnail_data, resize_target_size });
return;
}
if(get_file_type(thumbnail_path) == FileType::REGULAR) {
thumbnail_data->loading_state = LoadingState::LOADING;
image_load_queue.push({ url, thumbnail_path, false, thumbnail_data, resize_target_size });
return;
}
int free_index = get_free_load_index();
if(free_index == -1)
return;
loading_image[free_index] = true;
thumbnail_data->loading_state = LoadingState::LOADING;
if(download_image_thread[free_index].joinable())
download_image_thread[free_index].join();
// TODO: Keep the thread running and use conditional variable instead to sleep until a new image should be loaded. Same in ImageViewer.
download_image_thread[free_index] = std::thread([this, free_index, thumbnail_path, url, resize_target_size, thumbnail_data]() mutable {
thumbnail_data->image = std::make_unique<sf::Image>();
Path thumbnail_path_resized = thumbnail_path;
if(resize_target_size.x != 0 && resize_target_size.y != 0)
thumbnail_path_resized.append("_" + std::to_string(resize_target_size.x) + "x" + std::to_string(resize_target_size.y));
if(get_file_type(thumbnail_path_resized) == FileType::REGULAR) {
load_image_from_file(*thumbnail_data->image, thumbnail_path_resized.data);
thumbnail_data->loading_state = LoadingState::FINISHED_LOADING;
fprintf(stderr, "Loaded %s from thumbnail cache\n", thumbnail_path_resized.data.c_str());
return;
}
if(get_file_type(thumbnail_path.data) == FileType::FILE_NOT_FOUND && download_to_file(url, thumbnail_path.data, {}, true) != DownloadResult::OK) {
thumbnail_data->loading_state = LoadingState::FINISHED_LOADING;
loading_image[free_index] = false;
return;
}
if(resize_target_size.x != 0 && resize_target_size.y != 0)
create_thumbnail(thumbnail_path, thumbnail_path_resized, thumbnail_data.get(), resize_target_size);
else
load_image_from_file(*thumbnail_data->image, thumbnail_path.data);
thumbnail_data->loading_state = LoadingState::FINISHED_LOADING;
loading_image[free_index] = false;
return;
});
}
std::shared_ptr<ThumbnailData> AsyncImageLoader::get_thumbnail(const std::string &url, bool local, sf::Vector2i resize_target_size) {
// TODO: Instead of generating a new hash everytime to access thumbnail, cache the hash of the thumbnail url
auto &thumbnail_data = thumbnails[url];
if(!thumbnail_data)
thumbnail_data = std::make_shared<ThumbnailData>();
thumbnail_data->counter = counter;
load_thumbnail(url, local, resize_target_size, thumbnail_data);
return thumbnail_data;
}
void AsyncImageLoader::update() {
bool loaded_textures_changed = false;
for(auto it = thumbnails.begin(); it != thumbnails.end();) {
if(it->second->counter != counter) {
it = thumbnails.erase(it);
loaded_textures_changed = true;
} else {
++it;
}
}
++counter;
if(loaded_textures_changed)
malloc_trim(0);
}
int AsyncImageLoader::get_free_load_index() const {
for(int i = 0; i < NUM_IMAGE_LOAD_THREADS; ++i) {
if(!loading_image[i])
return i;
}
return -1;
}
}
|
