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_heif.h"
27 #include <libheif/heif.h>
29 typedef struct _ImageLoaderHEIF ImageLoaderHEIF;
30 struct _ImageLoaderHEIF {
31 ImageLoaderBackendCbAreaUpdated area_updated_cb;
32 ImageLoaderBackendCbSize size_cb;
33 ImageLoaderBackendCbAreaPrepared area_prepared_cb;
36 guint requested_width;
37 guint requested_height;
43 static void free_buffer(guchar *pixels, gpointer data)
48 static gboolean image_loader_heif_load(gpointer loader, const guchar *buf, gsize count, GError **error)
50 ImageLoaderHEIF *ld = (ImageLoaderHEIF *) loader;
51 struct heif_context* ctx;
52 struct heif_image* img;
53 struct heif_error error_code;
54 struct heif_image_handle* handle;
61 ctx = heif_context_alloc();
63 error_code = heif_context_read_from_memory_without_copy(ctx, buf, count, NULL);
66 log_printf("warning: heif reader error: %s\n", error_code.message);
67 heif_context_free(ctx);
72 page_total = heif_context_get_number_of_top_level_images(ctx);
73 ld->page_total = page_total;
75 guint32 IDs[page_total * sizeof(guint32)];
77 /* get list of all (top level) image IDs */
78 heif_context_get_list_of_top_level_image_IDs(ctx, IDs, page_total);
80 error_code = heif_context_get_image_handle(ctx, IDs[ld->page_num], &handle);
83 log_printf("warning: heif reader error: %s\n", error_code.message);
84 heif_context_free(ctx);
88 // decode the image and convert colorspace to RGB, saved as 24bit interleaved
89 error_code = heif_decode_image(handle, &img, heif_colorspace_RGB, heif_chroma_interleaved_24bit, NULL);
92 log_printf("warning: heif reader error: %s\n", error_code.message);
93 heif_context_free(ctx);
97 data = heif_image_get_plane(img, heif_channel_interleaved, &stride);
99 height = heif_image_get_height(img,heif_channel_interleaved);
100 width = heif_image_get_width(img,heif_channel_interleaved);
101 alpha = heif_image_handle_has_alpha_channel(handle);
103 ld->pixbuf = gdk_pixbuf_new_from_data(data, GDK_COLORSPACE_RGB, alpha, 8, width, height, stride, free_buffer, NULL);
105 ld->area_updated_cb(loader, 0, 0, width, height, ld->data);
108 heif_context_free(ctx);
113 static gpointer image_loader_heif_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
115 ImageLoaderHEIF *loader = g_new0(ImageLoaderHEIF, 1);
116 loader->area_updated_cb = area_updated_cb;
117 loader->size_cb = size_cb;
118 loader->area_prepared_cb = area_prepared_cb;
120 loader->page_num = 0;
121 return (gpointer) loader;
124 static void image_loader_heif_set_size(gpointer loader, int width, int height)
126 ImageLoaderHEIF *ld = (ImageLoaderHEIF *) loader;
127 ld->requested_width = width;
128 ld->requested_height = height;
131 static GdkPixbuf* image_loader_heif_get_pixbuf(gpointer loader)
133 ImageLoaderHEIF *ld = (ImageLoaderHEIF *) loader;
137 static gchar* image_loader_heif_get_format_name(gpointer loader)
139 return g_strdup("heif");
142 static gchar** image_loader_heif_get_format_mime_types(gpointer loader)
144 static gchar *mime[] = {"image/heic", NULL};
145 return g_strdupv(mime);
148 static void image_loader_heif_set_page_num(gpointer loader, gint page_num)
150 ImageLoaderHEIF *ld = (ImageLoaderHEIF *) loader;
152 ld->page_num = page_num;
155 static gint image_loader_heif_get_page_total(gpointer loader)
157 ImageLoaderHEIF *ld = (ImageLoaderHEIF *) loader;
159 return ld->page_total;
162 static gboolean image_loader_heif_close(gpointer loader, GError **error)
167 static void image_loader_heif_abort(gpointer loader)
169 ImageLoaderHEIF *ld = (ImageLoaderHEIF *) loader;
173 static void image_loader_heif_free(gpointer loader)
175 ImageLoaderHEIF *ld = (ImageLoaderHEIF *) loader;
176 if (ld->pixbuf) g_object_unref(ld->pixbuf);
180 void image_loader_backend_set_heif(ImageLoaderBackend *funcs)
182 funcs->loader_new = image_loader_heif_new;
183 funcs->set_size = image_loader_heif_set_size;
184 funcs->load = image_loader_heif_load;
186 funcs->get_pixbuf = image_loader_heif_get_pixbuf;
187 funcs->close = image_loader_heif_close;
188 funcs->abort = image_loader_heif_abort;
189 funcs->free = image_loader_heif_free;
190 funcs->get_format_name = image_loader_heif_get_format_name;
191 funcs->get_format_mime_types = image_loader_heif_get_format_mime_types;
192 funcs->set_page_num = image_loader_heif_set_page_num;
193 funcs->get_page_total = image_loader_heif_get_page_total;
197 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */