2 * Copyright (C) 20019 - The Geeqie Team
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #include "image-load.h"
24 #include "image-load-webp.h"
27 #include <webp/decode.h>
29 typedef struct _ImageLoaderWEBP ImageLoaderWEBP;
30 struct _ImageLoaderWEBP {
31 ImageLoaderBackendCbAreaUpdated area_updated_cb;
32 ImageLoaderBackendCbSize size_cb;
33 ImageLoaderBackendCbAreaPrepared area_prepared_cb;
36 guint requested_width;
37 guint requested_height;
41 static void free_buffer(guchar *pixels, gpointer)
46 static gboolean image_loader_webp_load(gpointer loader, const guchar *buf, gsize count, GError **)
48 ImageLoaderWEBP *ld = (ImageLoaderWEBP *) loader;
52 WebPBitstreamFeatures features;
53 VP8StatusCode status_code;
55 res_info = WebPGetInfo(buf, count, &width, &height);
58 log_printf("warning: webp reader error\n");
62 status_code = WebPGetFeatures(buf, count, &features);
63 if (status_code != VP8_STATUS_OK)
65 log_printf("warning: webp reader error\n");
69 if (features.has_alpha)
71 data = WebPDecodeRGBA(buf, count, &width, &height);
75 data = WebPDecodeRGB(buf, count, &width, &height);
78 ld->pixbuf = gdk_pixbuf_new_from_data(data, GDK_COLORSPACE_RGB, features.has_alpha, 8, width, height, width * (features.has_alpha ? 4 : 3), free_buffer, NULL);
80 ld->area_updated_cb(loader, 0, 0, width, height, ld->data);
85 static gpointer image_loader_webp_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
87 ImageLoaderWEBP *loader = g_new0(ImageLoaderWEBP, 1);
88 loader->area_updated_cb = area_updated_cb;
89 loader->size_cb = size_cb;
90 loader->area_prepared_cb = area_prepared_cb;
93 return (gpointer) loader;
96 static void image_loader_webp_set_size(gpointer loader, int width, int height)
98 ImageLoaderWEBP *ld = (ImageLoaderWEBP *) loader;
99 ld->requested_width = width;
100 ld->requested_height = height;
103 static GdkPixbuf* image_loader_webp_get_pixbuf(gpointer loader)
105 ImageLoaderWEBP *ld = (ImageLoaderWEBP *) loader;
109 static gchar* image_loader_webp_get_format_name(gpointer)
111 return g_strdup("webp");
114 static gchar** image_loader_webp_get_format_mime_types(gpointer)
116 static const gchar *mime[] = {"image/webp", nullptr};
117 return g_strdupv(const_cast<gchar **>(mime));
120 static gboolean image_loader_webp_close(gpointer, GError **)
125 static void image_loader_webp_abort(gpointer loader)
127 ImageLoaderWEBP *ld = (ImageLoaderWEBP *) loader;
131 static void image_loader_webp_free(gpointer loader)
133 ImageLoaderWEBP *ld = (ImageLoaderWEBP *) loader;
134 if (ld->pixbuf) g_object_unref(ld->pixbuf);
138 void image_loader_backend_set_webp(ImageLoaderBackend *funcs)
141 funcs->loader_new = image_loader_webp_new;
142 funcs->set_size = image_loader_webp_set_size;
143 funcs->load = image_loader_webp_load;
145 funcs->get_pixbuf = image_loader_webp_get_pixbuf;
146 funcs->close = image_loader_webp_close;
147 funcs->abort = image_loader_webp_abort;
148 funcs->free = image_loader_webp_free;
149 funcs->get_format_name = image_loader_webp_get_format_name;
150 funcs->get_format_mime_types = image_loader_webp_get_format_mime_types;
154 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */