X-Git-Url: http://geeqie.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fimage-load.c;h=e899ada75752ddacf88c8326ebca78e85e2ab0cc;hb=refs%2Fheads%2Fmaster;hp=1af4285ec1048257bb5b6a1012ad88baa778cc82;hpb=632d09215f133ab09c1f56de26b12cb35a794806;p=geeqie.git diff --git a/src/image-load.c b/src/image-load.c deleted file mode 100644 index 1af4285e..00000000 --- a/src/image-load.c +++ /dev/null @@ -1,1184 +0,0 @@ -/* - * Geeqie - * (C) 2004 John Ellis - * Copyright (C) 2008 - 2012 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 "image_load_gdk.h" -#include "image_load_jpeg.h" -#include "image_load_tiff.h" - -#include "exif.h" -#include "filedata.h" -#include "ui_fileops.h" -#include "gq-marshal.h" - -#include -#include - -#define IMAGE_LOADER_READ_BUFFER_SIZE_DEFAULT 4096 -#define IMAGE_LOADER_IDLE_READ_LOOP_COUNT_DEFAULT 1 - - -/**************************************************************************************/ -/* image loader class */ - - -enum { - SIGNAL_AREA_READY = 0, - SIGNAL_ERROR, - SIGNAL_DONE, - SIGNAL_PERCENT, - SIGNAL_SIZE, - SIGNAL_COUNT -}; - -static guint signals[SIGNAL_COUNT] = { 0 }; - -static void image_loader_init(GTypeInstance *instance, gpointer g_class); -static void image_loader_class_init(ImageLoaderClass *class); -static void image_loader_finalize(GObject *object); -static void image_loader_stop(ImageLoader *il); - -GType image_loader_get_type(void) -{ - static GType type = 0; - if (type == 0) - { - static const GTypeInfo info = { - sizeof(ImageLoaderClass), - NULL, /* base_init */ - NULL, /* base_finalize */ - (GClassInitFunc)image_loader_class_init, /* class_init */ - NULL, /* class_finalize */ - NULL, /* class_data */ - sizeof(ImageLoader), - 0, /* n_preallocs */ - (GInstanceInitFunc)image_loader_init, /* instance_init */ - NULL /* value_table */ - }; - type = g_type_register_static(G_TYPE_OBJECT, "ImageLoaderType", &info, 0); - } - return type; -} - -static void image_loader_init(GTypeInstance *instance, gpointer g_class) -{ - ImageLoader *il = (ImageLoader *)instance; - - il->pixbuf = NULL; - il->idle_id = 0; - 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 = 0; - - il->idle_read_loop_count = IMAGE_LOADER_IDLE_READ_LOOP_COUNT_DEFAULT; - il->read_buffer_size = IMAGE_LOADER_READ_BUFFER_SIZE_DEFAULT; - il->mapped_file = NULL; - - il->requested_width = 0; - il->requested_height = 0; - il->actual_width = 0; - il->actual_height = 0; - il->shrunk = FALSE; - - il->can_destroy = TRUE; - -#ifdef HAVE_GTHREAD - il->data_mutex = g_mutex_new(); - il->can_destroy_cond = g_cond_new(); -#endif - DEBUG_1("new image loader %p, bufsize=%" G_GSIZE_FORMAT " idle_loop=%u", il, il->read_buffer_size, il->idle_read_loop_count); -} - -static void image_loader_class_init(ImageLoaderClass *class) -{ - GObjectClass *gobject_class = G_OBJECT_CLASS (class); - -// gobject_class->set_property = image_loader_set_property; -// gobject_class->get_property = image_loader_get_property; - - gobject_class->finalize = image_loader_finalize; - - - signals[SIGNAL_AREA_READY] = - g_signal_new("area_ready", - G_OBJECT_CLASS_TYPE(gobject_class), - G_SIGNAL_RUN_LAST, - G_STRUCT_OFFSET(ImageLoaderClass, area_ready), - NULL, NULL, - gq_marshal_VOID__INT_INT_INT_INT, - G_TYPE_NONE, 4, - G_TYPE_INT, - G_TYPE_INT, - G_TYPE_INT, - G_TYPE_INT); - - signals[SIGNAL_ERROR] = - g_signal_new("error", - G_OBJECT_CLASS_TYPE(gobject_class), - G_SIGNAL_RUN_LAST, - G_STRUCT_OFFSET(ImageLoaderClass, error), - NULL, NULL, - g_cclosure_marshal_VOID__VOID, - G_TYPE_NONE, 0); - - signals[SIGNAL_DONE] = - g_signal_new("done", - G_OBJECT_CLASS_TYPE(gobject_class), - G_SIGNAL_RUN_LAST, - G_STRUCT_OFFSET(ImageLoaderClass, done), - NULL, NULL, - g_cclosure_marshal_VOID__VOID, - G_TYPE_NONE, 0); - - signals[SIGNAL_PERCENT] = - g_signal_new("percent", - G_OBJECT_CLASS_TYPE(gobject_class), - G_SIGNAL_RUN_LAST, - G_STRUCT_OFFSET(ImageLoaderClass, percent), - NULL, NULL, - g_cclosure_marshal_VOID__DOUBLE, - G_TYPE_NONE, 1, - G_TYPE_DOUBLE); - - signals[SIGNAL_SIZE] = - g_signal_new("size_prepared", - G_OBJECT_CLASS_TYPE(gobject_class), - G_SIGNAL_RUN_LAST, - G_STRUCT_OFFSET(ImageLoaderClass, area_ready), - NULL, NULL, - gq_marshal_VOID__INT_INT, - G_TYPE_NONE, 2, - G_TYPE_INT, - G_TYPE_INT); - -} - -static void image_loader_finalize(GObject *object) -{ - ImageLoader *il = (ImageLoader *)object; - - image_loader_stop(il); - - if (il->error) DEBUG_1("%s", image_loader_get_error(il)); - - DEBUG_1("freeing image loader %p bytes_read=%" G_GSIZE_FORMAT, il, il->bytes_read); - - if (il->idle_done_id) - { - g_source_remove(il->idle_done_id); - il->idle_done_id = 0; - } - - while (g_source_remove_by_user_data(il)) - { - DEBUG_2("pending signals detected"); - } - - while (il->area_param_list) - { - DEBUG_1("pending area_ready signals detected"); - while (g_source_remove_by_user_data(il->area_param_list->data)) {} - g_free(il->area_param_list->data); - il->area_param_list = g_list_delete_link(il->area_param_list, il->area_param_list); - } - - while (il->area_param_delayed_list) - { - g_free(il->area_param_delayed_list->data); - il->area_param_delayed_list = g_list_delete_link(il->area_param_delayed_list, il->area_param_delayed_list); - } - - if (il->pixbuf) g_object_unref(il->pixbuf); - - if (il->error) g_error_free(il->error); - - file_data_unref(il->fd); -#ifdef HAVE_GTHREAD - g_mutex_free(il->data_mutex); - g_cond_free(il->can_destroy_cond); -#endif -} - -void image_loader_free(ImageLoader *il) -{ - if (!il) return; - g_object_unref(G_OBJECT(il)); -} - - -ImageLoader *image_loader_new(FileData *fd) -{ - ImageLoader *il; - - if (!fd) return NULL; - - il = (ImageLoader *) g_object_new(TYPE_IMAGE_LOADER, NULL); - - il->fd = file_data_ref(fd); - - return il; -} - -/**************************************************************************************/ -/* send signals via idle calbacks - the callback are executed in the main thread */ - -typedef struct _ImageLoaderAreaParam ImageLoaderAreaParam; -struct _ImageLoaderAreaParam { - ImageLoader *il; - guint x; - guint y; - guint w; - guint h; -}; - - -static gboolean image_loader_emit_area_ready_cb(gpointer data) -{ - ImageLoaderAreaParam *par = data; - ImageLoader *il = par->il; - guint x, y, w, h; - g_mutex_lock(il->data_mutex); - il->area_param_list = g_list_remove(il->area_param_list, par); - x = par->x; - y = par->y; - w = par->w; - h = par->h; - g_free(par); - g_mutex_unlock(il->data_mutex); - - g_signal_emit(il, signals[SIGNAL_AREA_READY], 0, x, y, w, h); - - return FALSE; -} - -static gboolean image_loader_emit_done_cb(gpointer data) -{ - ImageLoader *il = data; - g_signal_emit(il, signals[SIGNAL_DONE], 0); - return FALSE; -} - -static gboolean image_loader_emit_error_cb(gpointer data) -{ - ImageLoader *il = data; - g_signal_emit(il, signals[SIGNAL_ERROR], 0); - return FALSE; -} - -static gboolean image_loader_emit_percent_cb(gpointer data) -{ - ImageLoader *il = data; - g_signal_emit(il, signals[SIGNAL_PERCENT], 0, image_loader_get_percent(il)); - return FALSE; -} - -static gboolean image_loader_emit_size_cb(gpointer data) -{ - gint width, height; - ImageLoader *il = data; - g_mutex_lock(il->data_mutex); - width = il->actual_width; - height = il->actual_height; - g_mutex_unlock(il->data_mutex); - g_signal_emit(il, signals[SIGNAL_SIZE], 0, width, height); - return FALSE; -} - - -/* DONE and ERROR are emited only once, thus they can have normal priority - PERCENT and AREA_READY should be processed ASAP -*/ - -static void image_loader_emit_done(ImageLoader *il) -{ - g_idle_add_full(il->idle_priority, image_loader_emit_done_cb, il, NULL); -} - -static void image_loader_emit_error(ImageLoader *il) -{ - g_idle_add_full(il->idle_priority, image_loader_emit_error_cb, il, NULL); -} - -static void image_loader_emit_percent(ImageLoader *il) -{ - g_idle_add_full(G_PRIORITY_HIGH, image_loader_emit_percent_cb, il, NULL); -} - -static void image_loader_emit_size(ImageLoader *il) -{ - g_idle_add_full(G_PRIORITY_HIGH, image_loader_emit_size_cb, il, NULL); -} - -static ImageLoaderAreaParam *image_loader_queue_area_ready(ImageLoader *il, GList **list, guint x, guint y, guint w, guint h) -{ - if (*list) - { - ImageLoaderAreaParam *prev_par = (*list)->data; - if (prev_par->x == x && prev_par->w == w && - prev_par->y + prev_par->h == y) - { - /* we can merge the notifications */ - prev_par->h += h; - return NULL; - } - if (prev_par->x == x && prev_par->w == w && - y + h == prev_par->y) - { - /* we can merge the notifications */ - prev_par->h += h; - prev_par->y = y; - return NULL; - } - if (prev_par->y == y && prev_par->h == h && - prev_par->x + prev_par->w == x) - { - /* we can merge the notifications */ - prev_par->w += w; - return NULL; - } - if (prev_par->y == y && prev_par->h == h && - x + w == prev_par->x) - { - /* we can merge the notifications */ - prev_par->w += w; - prev_par->x = x; - return NULL; - } - } - - ImageLoaderAreaParam *par = g_new0(ImageLoaderAreaParam, 1); - par->il = il; - par->x = x; - par->y = y; - par->w = w; - par->h = h; - - *list = g_list_prepend(*list, par); - return par; -} - -/* this function expects that il->data_mutex is locked by caller */ -static void image_loader_emit_area_ready(ImageLoader *il, guint x, guint y, guint w, guint h) -{ - ImageLoaderAreaParam *par = image_loader_queue_area_ready(il, &il->area_param_list, x, y, w, h); - - if (par) - { - g_idle_add_full(G_PRIORITY_HIGH, image_loader_emit_area_ready_cb, par, NULL); - } -} - -/**************************************************************************************/ -/* the following functions may be executed in separate thread */ - -/* this function expects that il->data_mutex is locked by caller */ -static void image_loader_queue_delayed_area_ready(ImageLoader *il, guint x, guint y, guint w, guint h) -{ - image_loader_queue_area_ready(il, &il->area_param_delayed_list, x, y, w, h); -} - - - -static gboolean image_loader_get_stopping(ImageLoader *il) -{ - gboolean ret; - if (!il) return FALSE; - - g_mutex_lock(il->data_mutex); - ret = il->stopping; - g_mutex_unlock(il->data_mutex); - - return ret; -} - - -static void image_loader_sync_pixbuf(ImageLoader *il) -{ - GdkPixbuf *pb; - - g_mutex_lock(il->data_mutex); - - if (!il->loader) - { - g_mutex_unlock(il->data_mutex); - return; - } - - pb = il->backend.get_pixbuf(il->loader); - - if (pb == il->pixbuf) - { - g_mutex_unlock(il->data_mutex); - return; - } - - if (g_ascii_strcasecmp(".jps", il->fd->extension) == 0) - { - g_object_set_data(G_OBJECT(pb), "stereo_data", GINT_TO_POINTER(STEREO_PIXBUF_CROSS)); - } - - if (il->pixbuf) g_object_unref(il->pixbuf); - - il->pixbuf = pb; - if (il->pixbuf) g_object_ref(il->pixbuf); - - g_mutex_unlock(il->data_mutex); -} - -static void image_loader_area_updated_cb(gpointer loader, - guint x, guint y, guint w, guint h, - gpointer data) -{ - ImageLoader *il = data; - - if (!image_loader_get_pixbuf(il)) - { - image_loader_sync_pixbuf(il); - if (!image_loader_get_pixbuf(il)) - { - log_printf("critical: area_ready signal with NULL pixbuf (out of mem?)\n"); - } - } - - g_mutex_lock(il->data_mutex); - if (il->delay_area_ready) - image_loader_queue_delayed_area_ready(il, x, y, w, h); - else - image_loader_emit_area_ready(il, x, y, w, h); - - if (il->stopping) il->backend.abort(il->loader); - - g_mutex_unlock(il->data_mutex); -} - -static void image_loader_area_prepared_cb(gpointer loader, gpointer data) -{ - ImageLoader *il = data; - GdkPixbuf *pb; - guchar *pix; - size_t h, rs; - - /* a workaround for - http://bugzilla.gnome.org/show_bug.cgi?id=547669 - http://bugzilla.gnome.org/show_bug.cgi?id=589334 - */ - gchar *format = il->backend.get_format_name(loader); - if (strcmp(format, "svg") == 0 || - strcmp(format, "xpm") == 0) - { - g_free(format); - return; - } - - g_free(format); - - pb = il->backend.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(gpointer loader, - gint width, gint height, gpointer data) -{ - ImageLoader *il = data; - gchar **mime_types; - gboolean scale = FALSE; - gint n; - - g_mutex_lock(il->data_mutex); - il->actual_width = width; - il->actual_height = height; - if (il->requested_width < 1 || il->requested_height < 1) - { - g_mutex_unlock(il->data_mutex); - image_loader_emit_size(il); - return; - } - g_mutex_unlock(il->data_mutex); - - mime_types = il->backend.get_format_mime_types(loader); - n = 0; - while (mime_types[n]) - { - if (strstr(mime_types[n], "jpeg")) scale = TRUE; - n++; - } - g_strfreev(mime_types); - - if (!scale) - { - image_loader_emit_size(il); - return; - } - - g_mutex_lock(il->data_mutex); - - gint nw, nh; - if (width > il->requested_width || height > il->requested_height) - { - - 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; - } - - il->actual_width = nw; - il->actual_height = nh; - il->backend.set_size(loader, nw, nh); - il->shrunk = TRUE; - } - - g_mutex_unlock(il->data_mutex); - image_loader_emit_size(il); -} - -static void image_loader_stop_loader(ImageLoader *il) -{ - if (!il) return; - - if (il->loader) - { - /* some loaders do not have a pixbuf till close, order is important here */ - il->backend.close(il->loader, il->error ? NULL : &il->error); /* we are interested in the first error only */ - image_loader_sync_pixbuf(il); - il->backend.free(il->loader); - il->loader = NULL; - } - g_mutex_lock(il->data_mutex); - il->done = TRUE; - g_mutex_unlock(il->data_mutex); -} - -static void image_loader_setup_loader(ImageLoader *il) -{ - g_mutex_lock(il->data_mutex); -#ifdef HAVE_JPEG - if (il->bytes_total >= 2 && il->mapped_file[0] == 0xff && il->mapped_file[1] == 0xd8) - { - DEBUG_1("Using custom jpeg loader"); - image_loader_backend_set_jpeg(&il->backend); - } - else -#endif -#ifdef HAVE_TIFF - if (il->bytes_total >= 10 && - (memcmp(il->mapped_file, "MM\0*", 4) == 0 || - memcmp(il->mapped_file, "II*\0", 4) == 0)) - { - DEBUG_1("Using custom tiff loader"); - image_loader_backend_set_tiff(&il->backend); - } - else -#endif - image_loader_backend_set_default(&il->backend); - - il->loader = il->backend.loader_new(image_loader_area_updated_cb, image_loader_size_cb, image_loader_area_prepared_cb, il); - g_mutex_unlock(il->data_mutex); -} - - -static void image_loader_done(ImageLoader *il) -{ - image_loader_stop_loader(il); - - image_loader_emit_done(il); -} - -static void image_loader_error(ImageLoader *il) -{ - image_loader_stop_loader(il); - - DEBUG_1("pixbuf_loader reported load error for: %s", il->fd->path); - - image_loader_emit_error(il); -} - -static gboolean image_loader_continue(ImageLoader *il) -{ - gint b; - gint c; - - if (!il) return FALSE; - - c = il->idle_read_loop_count ? il->idle_read_loop_count : 1; - while (c > 0 && !image_loader_get_stopping(il)) - { - 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 && !il->backend.write(il->loader, il->mapped_file + il->bytes_read, b, &il->error))) - { - image_loader_error(il); - return FALSE; - } - - il->bytes_read += b; - - c--; - } - - if (il->bytes_total > 0) - { - image_loader_emit_percent(il); - } - - return TRUE; -} - -static gboolean image_loader_begin(ImageLoader *il) -{ - gssize b; - - if (il->pixbuf) return FALSE; - - b = MIN(il->read_buffer_size, il->bytes_total - il->bytes_read); - if (b < 1) return FALSE; - - image_loader_setup_loader(il); - - g_assert(il->bytes_read == 0); - if (il->backend.load) { - b = il->bytes_total; - if (!il->backend.load(il->loader, il->mapped_file, b, &il->error)) - { - image_loader_stop_loader(il); - return FALSE; - } - } - else if (!il->backend.write(il->loader, il->mapped_file, b, &il->error)) - { - image_loader_stop_loader(il); - return FALSE; - } - - il->bytes_read += b; - - /* read until size is known */ - while (il->loader && !il->backend.get_pixbuf(il->loader) && b > 0 && !image_loader_get_stopping(il)) - { - b = MIN(il->read_buffer_size, il->bytes_total - il->bytes_read); - if (b < 0 || (b > 0 && !il->backend.write(il->loader, il->mapped_file + il->bytes_read, b, &il->error))) - { - image_loader_stop_loader(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_loader(il); - - if (!il->pixbuf) return FALSE; - - image_loader_done(il); - return TRUE; - } - - if (!il->pixbuf) - { - image_loader_stop_loader(il); - return FALSE; - } - - return TRUE; -} - -/**************************************************************************************/ -/* the following functions are always executed in the main thread */ - - -static gboolean image_loader_setup_source(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); - - if (options->thumbnails.use_exif) - il->mapped_file = exif_get_preview(exif, (guint *)&il->bytes_total, il->requested_width, il->requested_height); - else - il->mapped_file = exif_get_preview(exif, (guint *)&il->bytes_total, 0, 0); /* get the largest available preview image or NULL for normal images*/ - - if (il->mapped_file) - { - il->preview = TRUE; - DEBUG_1("Usable reduced size (preview) image loaded from file %s", 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; - } - - return TRUE; -} - -static void image_loader_stop_source(ImageLoader *il) -{ - if (!il) return; - - 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; - } -} - -static void image_loader_stop(ImageLoader *il) -{ - if (!il) return; - - if (il->idle_id) - { - g_source_remove(il->idle_id); - il->idle_id = 0; - } - - if (il->thread) - { - /* stop loader in the other thread */ - g_mutex_lock(il->data_mutex); - il->stopping = TRUE; - while (!il->can_destroy) g_cond_wait(il->can_destroy_cond, il->data_mutex); - g_mutex_unlock(il->data_mutex); - } - - image_loader_stop_loader(il); - image_loader_stop_source(il); - -} - -void image_loader_delay_area_ready(ImageLoader *il, gboolean enable) -{ - g_mutex_lock(il->data_mutex); - il->delay_area_ready = enable; - if (!enable) - { - /* send delayed */ - GList *list, *work; - list = g_list_reverse(il->area_param_delayed_list); - il->area_param_delayed_list = NULL; - g_mutex_unlock(il->data_mutex); - - work = list; - - while (work) - { - ImageLoaderAreaParam *par = work->data; - work = work->next; - - g_signal_emit(il, signals[SIGNAL_AREA_READY], 0, par->x, par->y, par->w, par->h); - g_free(par); - } - g_list_free(list); - } - else - { - /* just unlock */ - g_mutex_unlock(il->data_mutex); - } -} - - -/**************************************************************************************/ -/* execution via idle calls */ - -static gboolean image_loader_idle_cb(gpointer data) -{ - gboolean ret = FALSE; - ImageLoader *il = data; - - if (il->idle_id) - { - ret = image_loader_continue(il); - } - - if (!ret) - { - image_loader_stop_source(il); - } - - return ret; -} - - -static gboolean image_loader_start_idle(ImageLoader *il) -{ - gboolean ret; - - if (!il) return FALSE; - - if (!il->fd) return FALSE; - - if (!image_loader_setup_source(il)) return FALSE; - - ret = image_loader_begin(il); - - if (ret && !il->done) il->idle_id = g_idle_add_full(il->idle_priority, image_loader_idle_cb, il, NULL); - return ret; -} - -/**************************************************************************************/ -/* execution via thread */ - -#ifdef HAVE_GTHREAD -static GThreadPool *image_loader_thread_pool = NULL; - -static GCond *image_loader_prio_cond = NULL; -static GMutex *image_loader_prio_mutex = NULL; -static gint image_loader_prio_num = 0; - - -static void image_loader_thread_enter_high(void) -{ - g_mutex_lock(image_loader_prio_mutex); - image_loader_prio_num++; - g_mutex_unlock(image_loader_prio_mutex); -} - -static void image_loader_thread_leave_high(void) -{ - g_mutex_lock(image_loader_prio_mutex); - image_loader_prio_num--; - if (image_loader_prio_num == 0) g_cond_broadcast(image_loader_prio_cond); /* wake up all low prio threads */ - g_mutex_unlock(image_loader_prio_mutex); -} - -static void image_loader_thread_wait_high(void) -{ - g_mutex_lock(image_loader_prio_mutex); - while (image_loader_prio_num) - { - g_cond_wait(image_loader_prio_cond, image_loader_prio_mutex); - } - - g_mutex_unlock(image_loader_prio_mutex); -} - - -static void image_loader_thread_run(gpointer data, gpointer user_data) -{ - ImageLoader *il = data; - gboolean cont; - gboolean err; - - if (il->idle_priority > G_PRIORITY_DEFAULT_IDLE) - { - /* low prio, wait untill high prio tasks finishes */ - image_loader_thread_wait_high(); - } - else - { - /* high prio */ - image_loader_thread_enter_high(); - } - - err = !image_loader_begin(il); - - if (err) - { - /* - loader failed, we have to send signal - (idle mode returns the image_loader_begin return value directly) - (success is always reported indirectly from image_loader_begin) - */ - image_loader_emit_error(il); - } - - cont = !err; - - while (cont && !image_loader_get_is_done(il) && !image_loader_get_stopping(il)) - { - if (il->idle_priority > G_PRIORITY_DEFAULT_IDLE) - { - /* low prio, wait untill high prio tasks finishes */ - image_loader_thread_wait_high(); - } - cont = image_loader_continue(il); - } - image_loader_stop_loader(il); - - if (il->idle_priority <= G_PRIORITY_DEFAULT_IDLE) - { - /* high prio */ - image_loader_thread_leave_high(); - } - - g_mutex_lock(il->data_mutex); - il->can_destroy = TRUE; - g_cond_signal(il->can_destroy_cond); - g_mutex_unlock(il->data_mutex); - -} - - -static gboolean image_loader_start_thread(ImageLoader *il) -{ - if (!il) return FALSE; - - if (!il->fd) return FALSE; - - il->thread = TRUE; - - if (!image_loader_setup_source(il)) return FALSE; - - if (!image_loader_thread_pool) - { - image_loader_thread_pool = g_thread_pool_new(image_loader_thread_run, NULL, -1, FALSE, NULL); - image_loader_prio_cond = g_cond_new(); - image_loader_prio_mutex = g_mutex_new(); - } - - il->can_destroy = FALSE; /* ImageLoader can't be freed until image_loader_thread_run finishes */ - - g_thread_pool_push(image_loader_thread_pool, il, NULL); - DEBUG_1("Thread pool num threads: %d", g_thread_pool_get_num_threads(image_loader_thread_pool)); - - return TRUE; -} -#endif /* HAVE_GTHREAD */ - - -/**************************************************************************************/ -/* public interface */ - - -gboolean image_loader_start(ImageLoader *il) -{ - if (!il) return FALSE; - - if (!il->fd) return FALSE; - -#ifdef HAVE_GTHREAD - return image_loader_start_thread(il); -#else - return image_loader_start_idle(il); -#endif -} - - -/* 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) -{ - GdkPixbuf *ret; - if (!il) return NULL; - - g_mutex_lock(il->data_mutex); - ret = il->pixbuf; - g_mutex_unlock(il->data_mutex); - return ret; -} - -gchar *image_loader_get_format(ImageLoader *il) -{ - gchar **mimev; - gchar *mime; - - if (!il || !il->loader) return NULL; - - mimev = il->backend.get_format_mime_types(il->loader); - 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_requested_size(ImageLoader *il, gint width, gint height) -{ - if (!il) return; - - g_mutex_lock(il->data_mutex); - il->requested_width = width; - il->requested_height = height; - g_mutex_unlock(il->data_mutex); -} - -void image_loader_set_buffer_size(ImageLoader *il, guint count) -{ - if (!il) return; - - g_mutex_lock(il->data_mutex); - il->idle_read_loop_count = count ? count : 1; - g_mutex_unlock(il->data_mutex); -} - -void image_loader_set_priority(ImageLoader *il, gint priority) -{ - if (!il) return; - - if (il->thread) return; /* can't change prio if the thread already runs */ - il->idle_priority = priority; -} - - -gdouble image_loader_get_percent(ImageLoader *il) -{ - gdouble ret; - if (!il) return 0.0; - - g_mutex_lock(il->data_mutex); - if (il->bytes_total == 0) - { - ret = 0.0; - } - else - { - ret = (gdouble)il->bytes_read / il->bytes_total; - } - g_mutex_unlock(il->data_mutex); - return ret; -} - -gboolean image_loader_get_is_done(ImageLoader *il) -{ - gboolean ret; - if (!il) return FALSE; - - g_mutex_lock(il->data_mutex); - ret = il->done; - g_mutex_unlock(il->data_mutex); - - return ret; -} - -FileData *image_loader_get_fd(ImageLoader *il) -{ - FileData *ret; - if (!il) return NULL; - - g_mutex_lock(il->data_mutex); - ret = il->fd; - g_mutex_unlock(il->data_mutex); - - return ret; -} - -gboolean image_loader_get_shrunk(ImageLoader *il) -{ - gboolean ret; - if (!il) return FALSE; - - g_mutex_lock(il->data_mutex); - ret = il->shrunk; - g_mutex_unlock(il->data_mutex); - return ret; -} - -const gchar *image_loader_get_error(ImageLoader *il) -{ - const gchar *ret = NULL; - if (!il) return NULL; - g_mutex_lock(il->data_mutex); - if (il->error) ret = il->error->message; - g_mutex_unlock(il->data_mutex); - return ret; -} - - -/* FIXME - this can be rather slow and blocks until the size is known */ -gboolean image_load_dimensions(FileData *fd, gint *width, gint *height) -{ - ImageLoader *il; - gboolean success; - - il = image_loader_new(fd); - - success = image_loader_start_idle(il); - - 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; -} -/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */