+/*
+ * Copyright (C) 20019 - The Geeqie Team
+ *
+ * Author: Colin Clark
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "main.h"
+
+#include "image-load.h"
+#include "image-load-webp.h"
+
+#ifdef HAVE_WEBP
+#include <webp/decode.h>
+
+typedef struct _ImageLoaderWEBP ImageLoaderWEBP;
+struct _ImageLoaderWEBP {
+ ImageLoaderBackendCbAreaUpdated area_updated_cb;
+ ImageLoaderBackendCbSize size_cb;
+ ImageLoaderBackendCbAreaPrepared area_prepared_cb;
+ gpointer data;
+ GdkPixbuf *pixbuf;
+ guint requested_width;
+ guint requested_height;
+ gboolean abort;
+};
+
+static void free_buffer(guchar *pixels, gpointer)
+{
+ g_free(pixels);
+}
+
+static gboolean image_loader_webp_load(gpointer loader, const guchar *buf, gsize count, GError **)
+{
+ ImageLoaderWEBP *ld = (ImageLoaderWEBP *) loader;
+ guint8* data;
+ gint width, height;
+ gboolean res_info;
+ WebPBitstreamFeatures features;
+ VP8StatusCode status_code;
+
+ res_info = WebPGetInfo(buf, count, &width, &height);
+ if (!res_info)
+ {
+ log_printf("warning: webp reader error\n");
+ return FALSE;
+ }
+
+ status_code = WebPGetFeatures(buf, count, &features);
+ if (status_code != VP8_STATUS_OK)
+ {
+ log_printf("warning: webp reader error\n");
+ return FALSE;
+ }
+
+ if (features.has_alpha)
+ {
+ data = WebPDecodeRGBA(buf, count, &width, &height);
+ }
+ else
+ {
+ data = WebPDecodeRGB(buf, count, &width, &height);
+ }
+
+ 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);
+
+ ld->area_updated_cb(loader, 0, 0, width, height, ld->data);
+
+ return TRUE;
+}
+
+static gpointer image_loader_webp_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
+{
+ ImageLoaderWEBP *loader = g_new0(ImageLoaderWEBP, 1);
+ loader->area_updated_cb = area_updated_cb;
+ loader->size_cb = size_cb;
+ loader->area_prepared_cb = area_prepared_cb;
+ loader->data = data;
+
+ return (gpointer) loader;
+}
+
+static void image_loader_webp_set_size(gpointer loader, int width, int height)
+{
+ ImageLoaderWEBP *ld = (ImageLoaderWEBP *) loader;
+ ld->requested_width = width;
+ ld->requested_height = height;
+}
+
+static GdkPixbuf* image_loader_webp_get_pixbuf(gpointer loader)
+{
+ ImageLoaderWEBP *ld = (ImageLoaderWEBP *) loader;
+ return ld->pixbuf;
+}
+
+static gchar* image_loader_webp_get_format_name(gpointer)
+{
+ return g_strdup("webp");
+}
+
+static gchar** image_loader_webp_get_format_mime_types(gpointer)
+{
+ static const gchar *mime[] = {"image/webp", nullptr};
+ return g_strdupv(const_cast<gchar **>(mime));
+}
+
+static gboolean image_loader_webp_close(gpointer, GError **)
+{
+ return TRUE;
+}
+
+static void image_loader_webp_abort(gpointer loader)
+{
+ ImageLoaderWEBP *ld = (ImageLoaderWEBP *) loader;
+ ld->abort = TRUE;
+}
+
+static void image_loader_webp_free(gpointer loader)
+{
+ ImageLoaderWEBP *ld = (ImageLoaderWEBP *) loader;
+ if (ld->pixbuf) g_object_unref(ld->pixbuf);
+ g_free(ld);
+}
+
+void image_loader_backend_set_webp(ImageLoaderBackend *funcs)
+{
+DEBUG_0(" " );
+ funcs->loader_new = image_loader_webp_new;
+ funcs->set_size = image_loader_webp_set_size;
+ funcs->load = image_loader_webp_load;
+ funcs->write = NULL;
+ funcs->get_pixbuf = image_loader_webp_get_pixbuf;
+ funcs->close = image_loader_webp_close;
+ funcs->abort = image_loader_webp_abort;
+ funcs->free = image_loader_webp_free;
+ funcs->get_format_name = image_loader_webp_get_format_name;
+ funcs->get_format_mime_types = image_loader_webp_get_format_mime_types;
+}
+
+#endif
+/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */