/*
- * Geeqie
- * (C) 2004 John Ellis
- * Copyright (C) 2008 - 2012 The Geeqie Team
+ * Copyright (C) 2004 John Ellis
+ * Copyright (C) 2008 - 2016 The Geeqie Team
*
* Author: John Ellis
*
- * This software is released under the GNU General Public License (GNU GPL).
- * Please read the included file COPYING for more information.
- * This software comes with no warranty of any kind, use at your own risk!
+ * 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.
*/
-
#ifndef IMAGE_LOAD_H
#define IMAGE_LOAD_H
+#include <memory>
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <glib-object.h>
+#include <glib.h>
+
+struct FileData;
+
#define TYPE_IMAGE_LOADER (image_loader_get_type())
-typedef void (*ImageLoaderBackendCbAreaPrepared)(gpointer loader, gpointer data);
-typedef void (*ImageLoaderBackendCbSize)(gpointer loader, gint width, gint height, gpointer data);
-typedef void (*ImageLoaderBackendCbAreaUpdated)(gpointer loader, guint x, guint y, guint w, guint h, gpointer data);
-
-typedef gpointer (*ImageLoaderBackendFuncLoaderNew)(ImageLoaderBackendCbAreaUpdated, ImageLoaderBackendCbSize, ImageLoaderBackendCbAreaPrepared, gpointer data);
-typedef void (*ImageLoaderBackendFuncSetSize)(gpointer loader, int width, int height);
-typedef gboolean (*ImageLoaderBackendFuncLoad)(gpointer loader, const guchar *buf, gsize count, GError **error); /* optional, load whole image at once */
-typedef gboolean (*ImageLoaderBackendFuncWrite)(gpointer loader, const guchar *buf, gsize count, GError **error);
-typedef GdkPixbuf* (*ImageLoaderBackendFuncGetPixbuf)(gpointer loader);
-typedef gboolean (*ImageLoaderBackendFuncClose)(gpointer loader, GError **error);
-typedef void (*ImageLoaderBackendFuncAbort)(gpointer loader);
-typedef void (*ImageLoaderBackendFuncFree)(gpointer loader);
-typedef gchar* (*ImageLoaderBackendFuncGetFormatName)(gpointer loader);
-typedef gchar** (*ImageLoaderBackendFuncGetFormatMimeTypes)(gpointer loader);
-
-typedef struct _ImageLoaderBackend ImageLoaderBackend;
-struct _ImageLoaderBackend
+struct ImageLoaderBackend
{
- ImageLoaderBackendFuncLoaderNew loader_new;
- ImageLoaderBackendFuncSetSize set_size;
- ImageLoaderBackendFuncLoad load;
- ImageLoaderBackendFuncWrite write;
- ImageLoaderBackendFuncGetPixbuf get_pixbuf;
- ImageLoaderBackendFuncClose close;
- ImageLoaderBackendFuncAbort abort;
- ImageLoaderBackendFuncFree free;
- ImageLoaderBackendFuncGetFormatName get_format_name;
- ImageLoaderBackendFuncGetFormatMimeTypes get_format_mime_types;
+public:
+ virtual ~ImageLoaderBackend() = default;
+
+ using AreaUpdatedCb = void (*)(gpointer, guint, guint, guint, guint, gpointer);
+ using SizePreparedCb = void (*)(gpointer, gint, gint, gpointer);
+ using AreaPreparedCb = void (*)(gpointer, gpointer);
+
+ virtual void init(AreaUpdatedCb area_updated_cb, SizePreparedCb size_prepared_cb, AreaPreparedCb area_prepared_cb, gpointer data) = 0;
+ virtual void set_size(int /*width*/, int /*height*/) {};
+ virtual gboolean write(const guchar *buf, gsize &chunk_size, gsize count, GError **error) = 0;
+ virtual GdkPixbuf *get_pixbuf() = 0;
+ virtual gboolean close(GError **/*error*/) { return TRUE; };
+ virtual void abort() {};
+ virtual gchar *get_format_name() = 0;
+ virtual gchar **get_format_mime_types() = 0;
+ virtual void set_page_num(gint /*page_num*/) {};
+ virtual gint get_page_total() { return 0; };
};
+enum ImageLoaderPreview {
+ IMAGE_LOADER_PREVIEW_NONE = 0,
+ IMAGE_LOADER_PREVIEW_EXIF = 1,
+ IMAGE_LOADER_PREVIEW_LIBRAW = 2
+};
-//typedef struct _ImageLoader ImageLoader;
-typedef struct _ImageLoaderClass ImageLoaderClass;
-struct _ImageLoader
+struct ImageLoader
{
GObject parent;
-
+
/*< private >*/
GdkPixbuf *pixbuf;
FileData *fd;
gsize bytes_read;
gsize bytes_total;
- gboolean preview;
+ ImageLoaderPreview preview;
gint requested_width;
gint requested_height;
gboolean shrunk;
gboolean done;
- guint idle_id; /* event source id */
+ guint idle_id; /**< event source id */
gint idle_priority;
- gpointer *loader;
GError *error;
- ImageLoaderBackend backend;
+ std::unique_ptr<ImageLoaderBackend> backend;
- guint idle_done_id; /* event source id */
+ guint idle_done_id; /**< event source id */
GList *area_param_list;
GList *area_param_delayed_list;
-
+
gboolean delay_area_ready;
-
+
GMutex *data_mutex;
gboolean stopping;
gboolean can_destroy;
guint idle_read_loop_count;
};
-struct _ImageLoaderClass {
+struct ImageLoaderClass {
GObjectClass parent;
-
+
/* class members */
void (*area_ready)(ImageLoader *, guint x, guint y, guint w, guint h, gpointer);
void (*error)(ImageLoader *, gpointer);
void (*percent)(ImageLoader *, gdouble, gpointer);
};
-GType image_loader_get_type(void);
+GType image_loader_get_type();
ImageLoader *image_loader_new(FileData *fd);
void image_loader_free(ImageLoader *il);
-/* delay area_ready signals */
+/**
+ * @headerfile image_loader_delay_area_ready
+ * delay area_ready signals
+ */
void image_loader_delay_area_ready(ImageLoader *il, gboolean enable);
-/* Speed up loading when you only need at most width x height size image,
+/**
+ * @headerfile image_loader_set_requested_size
+ * Speed up loading when you only need at most width x height size image,
* only the jpeg GdkPixbuf loader benefits from it - so there is no
* guarantee that the image will scale down to the requested size..
*/
void image_loader_set_requested_size(ImageLoader *il, gint width, gint height);
-void image_loader_set_buffer_size(ImageLoader *il, guint size);
+void image_loader_set_buffer_size(ImageLoader *il, guint count);
-/* this only has effect if used before image_loader_start()
+/**
+ * @headerfile image_loader_set_priority
+ * this only has effect if used before image_loader_start()
* default is G_PRIORITY_DEFAULT_IDLE
*/
void image_loader_set_priority(ImageLoader *il, gint priority);
GdkPixbuf *image_loader_get_pixbuf(ImageLoader *il);
-gchar *image_loader_get_format(ImageLoader *il);
gdouble image_loader_get_percent(ImageLoader *il);
gboolean image_loader_get_is_done(ImageLoader *il);
FileData *image_loader_get_fd(ImageLoader *il);
projects / geeqie.git / blobdiff