+++ /dev/null
-/*
- * 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_djvu.h"
-
-#ifdef HAVE_DJVU
-
-#include <libdjvu/ddjvuapi.h>
-#include <libdjvu/miniexp.h>
-
-typedef struct _ImageLoaderDJVU ImageLoaderDJVU;
-struct _ImageLoaderDJVU {
- ImageLoaderBackendCbAreaUpdated area_updated_cb;
- ImageLoaderBackendCbSize size_cb;
- ImageLoaderBackendCbAreaPrepared area_prepared_cb;
- gpointer data;
- GdkPixbuf *pixbuf;
- guint requested_width;
- guint requested_height;
- gboolean abort;
- gint page_num;
- gint page_total;
-};
-
-static void free_buffer(guchar *pixels, gpointer data)
-{
- g_free (pixels);;
-}
-
-static gboolean image_loader_djvu_load(gpointer loader, const guchar *buf, gsize count, GError **error)
-{
- ImageLoaderDJVU *ld = (ImageLoaderDJVU *) loader;
- ddjvu_context_t *ctx;
- ddjvu_document_t *doc;
- ddjvu_page_t *page;
- ddjvu_rect_t rrect;
- ddjvu_rect_t prect;
- ddjvu_format_t *fmt;
- gint width, height;
- gint stride;
- gboolean alpha = FALSE;
- cairo_surface_t *surface;
- gchar *pixels;
-
- ctx = ddjvu_context_create(NULL);
-
- doc = ddjvu_document_create(ctx, NULL, FALSE);
-
- ddjvu_stream_write(doc, 0, buf, count );
- while (!ddjvu_document_decoding_done(doc));
-
- ld->page_total = ddjvu_document_get_pagenum(doc);
-
- page = ddjvu_page_create_by_pageno(doc, ld->page_num);
- while (!ddjvu_page_decoding_done(page));
-
- fmt = ddjvu_format_create(DDJVU_FORMAT_RGB24, 0, 0);
-
- width = ddjvu_page_get_width(page);
- height = ddjvu_page_get_height(page);
- stride = width * 4;
-
- pixels = (gchar *)g_malloc(height * stride);
-
- prect.x = 0;
- prect.y = 0;
- prect.w = width;
- prect.h = height;
- rrect = prect;
-
- surface = cairo_image_surface_create_for_data((guchar *)pixels, CAIRO_FORMAT_RGB24, width, height, stride);
-
- ddjvu_page_render(page, DDJVU_RENDER_COLOR, &prect, &rrect, fmt, stride, pixels);
-
- /* FIXME implementation of rotation is not correct */
- GdkPixbuf *tmp1;
- GdkPixbuf *tmp2;
- tmp1 = gdk_pixbuf_new_from_data(pixels, GDK_COLORSPACE_RGB, alpha, 8, width, height, stride, free_buffer, NULL);
- tmp2 = gdk_pixbuf_flip(tmp1, TRUE);
- g_object_unref(tmp1);
-
- ld->pixbuf = gdk_pixbuf_rotate_simple(tmp2,GDK_PIXBUF_ROTATE_UPSIDEDOWN);
-
- ld->area_updated_cb(loader, 0, 0, width, height, ld->data);
-
-
- cairo_surface_destroy(surface);
- ddjvu_page_release(page);
- ddjvu_document_release(doc);
- ddjvu_context_release(ctx);
-
- return TRUE;
-}
-
-static gpointer image_loader_djvu_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
-{
- ImageLoaderDJVU *loader = g_new0(ImageLoaderDJVU, 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_djvu_set_size(gpointer loader, int width, int height)
-{
- ImageLoaderDJVU *ld = (ImageLoaderDJVU *) loader;
- ld->requested_width = width;
- ld->requested_height = height;
-}
-
-static GdkPixbuf* image_loader_djvu_get_pixbuf(gpointer loader)
-{
- ImageLoaderDJVU *ld = (ImageLoaderDJVU *) loader;
- return ld->pixbuf;
-}
-
-static gchar* image_loader_djvu_get_format_name(gpointer loader)
-{
- return g_strdup("djvu");
-}
-
-static gchar** image_loader_djvu_get_format_mime_types(gpointer loader)
-{
- static gchar *mime[] = {"image/vnd.djvu", NULL};
- return g_strdupv(mime);
-}
-
-static void image_loader_djvu_set_page_num(gpointer loader, gint page_num)
-{
- ImageLoader *il = (ImageLoader *) loader;
- ImageLoaderDJVU *ld = (ImageLoaderDJVU *) loader;
-
- ld->page_num = page_num;
-}
-
-static gint image_loader_djvu_get_page_total(gpointer loader)
-{
- ImageLoaderDJVU *ld = (ImageLoaderDJVU *) loader;
-
- return ld->page_total;
-}
-
-static gboolean image_loader_djvu_close(gpointer loader, GError **error)
-{
- return TRUE;
-}
-
-static void image_loader_djvu_abort(gpointer loader)
-{
- ImageLoaderDJVU *ld = (ImageLoaderDJVU *) loader;
- ld->abort = TRUE;
-}
-
-static void image_loader_djvu_free(gpointer loader)
-{
- ImageLoaderDJVU *ld = (ImageLoaderDJVU *) loader;
- if (ld->pixbuf) g_object_unref(ld->pixbuf);
- g_free(ld);
-}
-
-void image_loader_backend_set_djvu(ImageLoaderBackend *funcs)
-{
- funcs->loader_new = image_loader_djvu_new;
- funcs->set_size = image_loader_djvu_set_size;
- funcs->load = image_loader_djvu_load;
- funcs->write = NULL;
- funcs->get_pixbuf = image_loader_djvu_get_pixbuf;
- funcs->close = image_loader_djvu_close;
- funcs->abort = image_loader_djvu_abort;
- funcs->free = image_loader_djvu_free;
- funcs->get_format_name = image_loader_djvu_get_format_name;
- funcs->get_format_mime_types = image_loader_djvu_get_format_mime_types;
- funcs->set_page_num = image_loader_djvu_set_page_num;
- funcs->get_page_total = image_loader_djvu_get_page_total;
-}
-
-#endif
-/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */
projects / geeqie.git / blobdiff