+++ /dev/null
-/*
- * Geeqie
- * (C) 2004 John Ellis
- * Copyright (C) 2008 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!
- */
-
-
-#include "main.h"
-#include "image-load.h"
-
-#include "exif.h"
-#include "filedata.h"
-#include "ui_fileops.h"
-
-#include <fcntl.h>
-#include <sys/mman.h>
-
-
-static void image_loader_sync_pixbuf(ImageLoader *il)
-{
- GdkPixbuf *pb;
-
- if (!il->loader) return;
-
- pb = gdk_pixbuf_loader_get_pixbuf(il->loader);
-
- if (pb == il->pixbuf) return;
-
- if (il->pixbuf) gdk_pixbuf_unref(il->pixbuf);
- il->pixbuf = pb;
- if (il->pixbuf) gdk_pixbuf_ref(il->pixbuf);
-}
-
-static void image_loader_area_updated_cb(GdkPixbufLoader *loader,
- guint x, guint y, guint w, guint h,
- gpointer data)
-{
- ImageLoader *il = data;
-
- if (il->func_area_ready)
- {
- if (!il->pixbuf)
- {
- image_loader_sync_pixbuf(il);
- if (!il->pixbuf)
- {
- log_printf("critical: area_ready signal with NULL pixbuf (out of mem?)\n");
- }
- }
- il->func_area_ready(il, x, y, w, h, il->data_area_ready);
- }
-}
-
-static void image_loader_area_prepared_cb(GdkPixbufLoader *loader, gpointer data)
-{
- GdkPixbuf *pb;
- guchar *pix;
- size_t h, rs;
-
- /* a workaround for http://bugzilla.gnome.org/show_bug.cgi?id=547669 */
- gchar *format = gdk_pixbuf_format_get_name(gdk_pixbuf_loader_get_format(loader));
- if (strcmp(format, "svg") == 0)
- {
- g_free(format);
- return;
- }
-
- g_free(format);
-
- pb = gdk_pixbuf_loader_get_pixbuf(loader);
-
- h = gdk_pixbuf_get_height(pb);
- rs = gdk_pixbuf_get_rowstride(pb);
- pix = gdk_pixbuf_get_pixels(pb);
-
- memset(pix, 0, rs * h); /*this should be faster than pixbuf_fill */
-
-}
-
-static void image_loader_size_cb(GdkPixbufLoader *loader,
- gint width, gint height, gpointer data)
-{
- ImageLoader *il = data;
- GdkPixbufFormat *format;
- gchar **mime_types;
- gint scale = FALSE;
- gint n;
-
- if (il->requested_width < 1 || il->requested_height < 1) return;
-
- format = gdk_pixbuf_loader_get_format(loader);
- if (!format) return;
-
- mime_types = gdk_pixbuf_format_get_mime_types(format);
- n = 0;
- while (mime_types[n])
- {
- if (strstr(mime_types[n], "jpeg")) scale = TRUE;
- n++;
- }
- g_strfreev(mime_types);
-
- if (!scale) return;
-
- if (width > il->requested_width || height > il->requested_height)
- {
- gint nw, nh;
-
- if (((gdouble)il->requested_width / width) < ((gdouble)il->requested_height / height))
- {
- nw = il->requested_width;
- nh = (gdouble)nw / width * height;
- if (nh < 1) nh = 1;
- }
- else
- {
- nh = il->requested_height;
- nw = (gdouble)nh / height * width;
- if (nw < 1) nw = 1;
- }
-
- gdk_pixbuf_loader_set_size(loader, nw, nh);
- il->shrunk = TRUE;
- }
-}
-
-static void image_loader_stop(ImageLoader *il)
-{
- if (!il) return;
-
- if (il->idle_id != -1)
- {
- g_source_remove(il->idle_id);
- il->idle_id = -1;
- }
-
- if (il->loader)
- {
- /* some loaders do not have a pixbuf till close, order is important here */
- gdk_pixbuf_loader_close(il->loader, NULL);
- image_loader_sync_pixbuf(il);
- g_object_unref(G_OBJECT(il->loader));
- il->loader = NULL;
- }
-
- if (il->mapped_file)
- {
- if (il->preview)
- {
- exif_free_preview(il->mapped_file);
- }
- else
- {
- munmap(il->mapped_file, il->bytes_total);
- }
- il->mapped_file = NULL;
- }
-
- il->done = TRUE;
-}
-
-static void image_loader_done(ImageLoader *il)
-{
- image_loader_stop(il);
-
- if (il->func_done) il->func_done(il, il->data_done);
-}
-
-static gint image_loader_done_delay_cb(gpointer data)
-{
- ImageLoader *il = data;
-
- il->idle_done_id = -1;
- image_loader_done(il);
- return FALSE;
-}
-
-static void image_loader_done_delay(ImageLoader *il)
-{
- if (il->idle_done_id == -1) il->idle_done_id = g_idle_add_full(il->idle_priority,
- image_loader_done_delay_cb, il, NULL);
-}
-
-static void image_loader_error(ImageLoader *il)
-{
- image_loader_stop(il);
-
- DEBUG_1("pixbuf_loader reported load error for: %s", il->fd->path);
-
- if (il->func_error) il->func_error(il, il->data_error);
-}
-
-static gint image_loader_idle_cb(gpointer data)
-{
- ImageLoader *il = data;
- gint b;
- gint c;
-
- if (!il) return FALSE;
-
- if (il->idle_id == -1) return FALSE;
-
- c = il->idle_read_loop_count ? il->idle_read_loop_count : 1;
- while (c > 0)
- {
- b = MIN(il->read_buffer_size, il->bytes_total - il->bytes_read);
-
- if (b == 0)
- {
- image_loader_done(il);
- return FALSE;
- }
-
- if (b < 0 || (b > 0 && !gdk_pixbuf_loader_write(il->loader, il->mapped_file + il->bytes_read, b, NULL)))
- {
- image_loader_error(il);
- return FALSE;
- }
-
- il->bytes_read += b;
-
- c--;
- }
-
- if (il->func_percent && il->bytes_total > 0)
- {
- il->func_percent(il, (gdouble)il->bytes_read / il->bytes_total, il->data_percent);
- }
-
- return TRUE;
-}
-
-static gint image_loader_begin(ImageLoader *il)
-{
- gint b;
-
- if (!il->loader || il->pixbuf) return FALSE;
-
- b = MIN(il->read_buffer_size, il->bytes_total - il->bytes_read);
-
- if (b < 1)
- {
- image_loader_stop(il);
- return FALSE;
- }
-
- if (!gdk_pixbuf_loader_write(il->loader, il->mapped_file + il->bytes_read, b, NULL))
- {
- image_loader_stop(il);
- return FALSE;
- }
-
- il->bytes_read += b;
-
- /* read until size is known */
- while (il->loader && !gdk_pixbuf_loader_get_pixbuf(il->loader) && b > 0)
- {
- b = MIN(il->read_buffer_size, il->bytes_total - il->bytes_read);
- if (b < 0 || (b > 0 && !gdk_pixbuf_loader_write(il->loader, il->mapped_file + il->bytes_read, b, NULL)))
- {
- image_loader_stop(il);
- return FALSE;
- }
- il->bytes_read += b;
- }
- if (!il->pixbuf) image_loader_sync_pixbuf(il);
-
- if (il->bytes_read == il->bytes_total || b < 1)
- {
- /* done, handle (broken) loaders that do not have pixbuf till close */
- image_loader_stop(il);
-
- if (!il->pixbuf) return FALSE;
-
- image_loader_done_delay(il);
- return TRUE;
- }
-
- if (!il->pixbuf)
- {
- image_loader_stop(il);
- return FALSE;
- }
-
- /* finally, progressive loading :) */
- il->idle_id = g_idle_add_full(il->idle_priority, image_loader_idle_cb, il, NULL);
-
- return TRUE;
-}
-
-static gint image_loader_setup(ImageLoader *il)
-{
- struct stat st;
- gchar *pathl;
-
- if (!il || il->loader || il->mapped_file) return FALSE;
-
- il->mapped_file = NULL;
-
- if (il->fd)
- {
- ExifData *exif = exif_read_fd(il->fd);
-
- il->mapped_file = exif_get_preview(exif, &il->bytes_total);
-
- if (il->mapped_file)
- {
- il->preview = TRUE;
- DEBUG_1("Raw file %s contains embedded image", il->fd->path);
- }
- exif_free_fd(il->fd, exif);
- }
-
-
- if (!il->mapped_file)
- {
- /* normal file */
- gint load_fd;
-
- pathl = path_from_utf8(il->fd->path);
- load_fd = open(pathl, O_RDONLY | O_NONBLOCK);
- g_free(pathl);
- if (load_fd == -1) return FALSE;
-
- if (fstat(load_fd, &st) == 0)
- {
- il->bytes_total = st.st_size;
- }
- else
- {
- close(load_fd);
- return FALSE;
- }
-
- il->mapped_file = mmap(0, il->bytes_total, PROT_READ|PROT_WRITE, MAP_PRIVATE, load_fd, 0);
- close(load_fd);
- if (il->mapped_file == MAP_FAILED)
- {
- il->mapped_file = 0;
- return FALSE;
- }
- il->preview = FALSE;
- }
-
-
- il->loader = gdk_pixbuf_loader_new();
- g_signal_connect(G_OBJECT(il->loader), "area_updated",
- G_CALLBACK(image_loader_area_updated_cb), il);
- g_signal_connect(G_OBJECT(il->loader), "size_prepared",
- G_CALLBACK(image_loader_size_cb), il);
- g_signal_connect(G_OBJECT(il->loader), "area_prepared",
- G_CALLBACK(image_loader_area_prepared_cb), il);
-
- il->shrunk = FALSE;
-
- return image_loader_begin(il);
-}
-
-ImageLoader *image_loader_new(FileData *fd)
-{
- ImageLoader *il;
-
- if (!fd) return NULL;
-
- il = g_new0(ImageLoader, 1);
- il->fd = file_data_ref(fd);
- il->pixbuf = NULL;
- il->idle_id = -1;
- il->idle_priority = G_PRIORITY_DEFAULT_IDLE;
- il->done = FALSE;
- il->loader = NULL;
-
- il->bytes_read = 0;
- il->bytes_total = 0;
-
- il->idle_done_id = -1;
-
- il->idle_read_loop_count = options->image.idle_read_loop_count;
- il->read_buffer_size = options->image.read_buffer_size;
- il->mapped_file = NULL;
-
- il->requested_width = 0;
- il->requested_height = 0;
- il->shrunk = FALSE;
- DEBUG_1("new image loader %p, bufsize=%u idle_loop=%u", il, il->read_buffer_size, il->idle_read_loop_count);
- return il;
-}
-
-void image_loader_free(ImageLoader *il)
-{
- if (!il) return;
-
- image_loader_stop(il);
- if (il->idle_done_id != -1) g_source_remove(il->idle_done_id);
- if (il->pixbuf) gdk_pixbuf_unref(il->pixbuf);
- file_data_unref(il->fd);
- DEBUG_1("freeing image loader %p bytes_read=%d", il, il->bytes_read);
- g_free(il);
-}
-
-/* don't forget to gdk_pixbuf_ref() it if you want to use it after image_loader_free() */
-GdkPixbuf *image_loader_get_pixbuf(ImageLoader *il)
-{
- if (!il) return NULL;
-
- return il->pixbuf;
-}
-
-gchar *image_loader_get_format(ImageLoader *il)
-{
- GdkPixbufFormat *format;
- gchar **mimev;
- gchar *mime;
-
- if (!il || !il->loader) return NULL;
-
- format = gdk_pixbuf_loader_get_format(il->loader);
- if (!format) return NULL;
-
- mimev = gdk_pixbuf_format_get_mime_types(format);
- if (!mimev) return NULL;
-
- /* return first member of mimev, as GdkPixbufLoader has no way to tell us which exact one ? */
- mime = g_strdup(mimev[0]);
- g_strfreev(mimev);
-
- return mime;
-}
-
-void image_loader_set_area_ready_func(ImageLoader *il,
- void (*func_area_ready)(ImageLoader *, guint, guint, guint, guint, gpointer),
- gpointer data_area_ready)
-{
- if (!il) return;
-
- il->func_area_ready = func_area_ready;
- il->data_area_ready = data_area_ready;
-}
-
-void image_loader_set_error_func(ImageLoader *il,
- void (*func_error)(ImageLoader *, gpointer),
- gpointer data_error)
-{
- if (!il) return;
-
- il->func_error = func_error;
- il->data_error = data_error;
-}
-
-void image_loader_set_done_func(ImageLoader *il,
- void (*func_done)(ImageLoader *, gpointer),
- gpointer data_done)
-{
- if (!il) return;
-
- il->func_done = func_done;
- il->data_done = data_done;
-}
-
-void image_loader_set_percent_func(ImageLoader *il,
- void (*func_percent)(ImageLoader *, gdouble, gpointer),
- gpointer data_percent)
-{
- if (!il) return;
-
- il->func_percent = func_percent;
- il->data_percent = data_percent;
-}
-
-void image_loader_set_requested_size(ImageLoader *il, gint width, gint height)
-{
- if (!il) return;
-
- il->requested_width = width;
- il->requested_height = height;
-}
-
-void image_loader_set_buffer_size(ImageLoader *il, guint count)
-{
- if (!il) return;
-
- il->idle_read_loop_count = count ? count : 1;
-}
-
-void image_loader_set_priority(ImageLoader *il, gint priority)
-{
- if (!il) return;
-
- il->idle_priority = priority;
-}
-
-gint image_loader_start(ImageLoader *il, void (*func_done)(ImageLoader *, gpointer), gpointer data_done)
-{
- if (!il) return FALSE;
-
- if (!il->fd) return FALSE;
-
- image_loader_set_done_func(il, func_done, data_done);
-
- return image_loader_setup(il);
-}
-
-gdouble image_loader_get_percent(ImageLoader *il)
-{
- if (!il || il->bytes_total == 0) return 0.0;
-
- return (gdouble)il->bytes_read / il->bytes_total;
-}
-
-gint image_loader_get_is_done(ImageLoader *il)
-{
- if (!il) return FALSE;
-
- return il->done;
-}
-
-FileData *image_loader_get_fd(ImageLoader *il)
-{
- if (!il) return NULL;
-
- return il->fd;
-
-}
-
-gint image_loader_get_shrunk(ImageLoader *il)
-{
- if (!il) return FALSE;
-
- return il->shrunk;
-
-}
-
-
-gint image_load_dimensions(FileData *fd, gint *width, gint *height)
-{
- ImageLoader *il;
- gint success;
-
- il = image_loader_new(fd);
-
- success = image_loader_start(il, NULL, NULL);
-
- if (success && il->pixbuf)
- {
- if (width) *width = gdk_pixbuf_get_width(il->pixbuf);
- if (height) *height = gdk_pixbuf_get_height(il->pixbuf);;
- }
- else
- {
- if (width) *width = -1;
- if (height) *height = -1;
- }
-
- image_loader_free(il);
-
- return success;
-}
projects / geeqie.git / blobdiff