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Add async tiff load/save code

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This will be used in content (de)serialization.
This commit is contained in:
Matthias Clasen
2021-09-09 22:53:36 -04:00
parent 7725c8439c
commit 53f6766bb3
2 changed files with 141 additions and 9 deletions
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111
gdk/gdktiff.c
View File

@@ -282,6 +282,7 @@ tiff_open (gpointer stream,
}
/* }}} */
/* {{{ Public API */
static struct {
GdkMemoryFormat format;
@@ -510,4 +511,114 @@ gdk_load_tiff (GInputStream *stream,
return texture;
}
/* }}} */
/* {{{ Async code */
static void
load_tiff_in_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GInputStream *stream = source_object;
GdkTexture *texture;
GError *error = NULL;
texture = gdk_load_tiff (stream, &error);
if (texture)
g_task_return_pointer (task, texture, g_object_unref);
else
g_task_return_error (task, error);
}
void
gdk_load_tiff_async (GInputStream *stream,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (stream, cancellable, callback, user_data);
g_task_run_in_thread (task, load_tiff_in_thread);
g_object_unref (task);
}
GdkTexture *
gdk_load_tiff_finish (GAsyncResult *result,
GError **error)
{
return g_task_propagate_pointer (G_TASK (result), error);
}
typedef struct {
const guchar *data;
int width;
int height;
int stride;
GdkMemoryFormat format;
} SaveTiffData;
static void
save_tiff_in_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GOutputStream *stream = source_object;
SaveTiffData *data = task_data;
GError *error = NULL;
gboolean result;
result = gdk_save_tiff (stream,
data->data,
data->width,
data->height,
data->stride,
data->format,
&error);
if (result)
g_task_return_boolean (task, result);
else
g_task_return_error (task, error);
}
void
gdk_save_tiff_async (GOutputStream *stream,
const guchar *data,
int width,
int height,
int stride,
GdkMemoryFormat format,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
SaveTiffData *save_data;
save_data = g_new0 (SaveTiffData, 1);
save_data->data = data;
save_data->width = width;
save_data->height = height;
save_data->stride = stride;
save_data->format = format;
task = g_task_new (stream, cancellable, callback, user_data);
g_task_set_task_data (task, save_data, g_free);
g_task_run_in_thread (task, save_tiff_in_thread);
g_object_unref (task);
}
gboolean
gdk_save_tiff_finish (GAsyncResult *result,
GError **error)
{
return g_task_propagate_boolean (G_TASK (result), error);
}
/* }}} */
/* vim:set foldmethod=marker expandtab: */

39
gdk/gdktiff.h
View File

@@ -21,15 +21,36 @@
#include "gdkmemorytexture.h"
#include <gio/gio.h>
GdkTexture *gdk_load_tiff (GInputStream *stream,
GError **error);
GdkTexture *gdk_load_tiff (GInputStream *stream,
GError **error);
gboolean gdk_save_tiff (GOutputStream *stream,
const guchar *data,
int width,
int height,
int stride,
GdkMemoryFormat format,
GError **error);
void gdk_load_tiff_async (GInputStream *stream,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
GdkTexture *gdk_load_tiff_finish (GAsyncResult *result,
GError **error);
gboolean gdk_save_tiff (GOutputStream *stream,
const guchar *data,
int width,
int height,
int stride,
GdkMemoryFormat format,
GError **error);
void gdk_save_tiff_async (GOutputStream *stream,
const guchar *data,
int width,
int height,
int stride,
GdkMemoryFormat format,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
gboolean gdk_save_tiff_finish (GAsyncResult *result,
GError **error);
#endif