[gdk-pixbuf] loader: Add gdk_pixbuf_loader_write_bytes()

[Emmanuele Bassi <ebassi src gnome org>]

commit 7e5ee66091e17fb006d4933a3634083d09666862
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sat Mar 30 17:48:33 2013 +0000

    loader: Add gdk_pixbuf_loader_write_bytes()
    
    A GBytes variant to gdk_pixbuf_loader_write(), which allows language
    bindings to actually be able to use the Gio GInputStream.read_bytes()
    method with GdkPixbufLoader.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=696917

 docs/reference/gdk-pixbuf/gdk-pixbuf-sections.txt |    1 +
 gdk-pixbuf/gdk-pixbuf-loader.c                    |   36 +++++++++++++++++++++
 gdk-pixbuf/gdk-pixbuf-loader.h                    |    3 ++
 gdk-pixbuf/gdk-pixbuf.symbols                     |    1 +
 4 files changed, 41 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gdk-pixbuf/gdk-pixbuf-sections.txt 
b/docs/reference/gdk-pixbuf/gdk-pixbuf-sections.txt
index 97085d2..3b087b1 100644
--- a/docs/reference/gdk-pixbuf/gdk-pixbuf-sections.txt
+++ b/docs/reference/gdk-pixbuf/gdk-pixbuf-sections.txt
@@ -213,6 +213,7 @@ gdk_pixbuf_loader_new_with_type
 gdk_pixbuf_loader_new_with_mime_type
 gdk_pixbuf_loader_get_format
 gdk_pixbuf_loader_write
+gdk_pixbuf_loader_write_bytes
 gdk_pixbuf_loader_set_size
 gdk_pixbuf_loader_get_pixbuf
 gdk_pixbuf_loader_get_animation
diff --git a/gdk-pixbuf/gdk-pixbuf-loader.c b/gdk-pixbuf/gdk-pixbuf-loader.c
index 2461ec4..9acb10d 100644
--- a/gdk-pixbuf/gdk-pixbuf-loader.c
+++ b/gdk-pixbuf/gdk-pixbuf-loader.c
@@ -544,6 +544,42 @@ gdk_pixbuf_loader_write (GdkPixbufLoader *loader,
 }
 
 /**
+ * gdk_pixbuf_loader_write_bytes:
+ * @loader: A pixbuf loader.
+ * @buffer: The image data as a #GBytes
+ * @error: return location for errors
+ *
+ * This will cause a pixbuf loader to parse a buffer inside a #GBytes
+ * for an image.  It will return %TRUE if the data was loaded successfully,
+ * and %FALSE if an error occurred.  In the latter case, the loader
+ * will be closed, and will not accept further writes. If %FALSE is
+ * returned, @error will be set to an error from the #GDK_PIXBUF_ERROR
+ * or #G_FILE_ERROR domains.
+ *
+ * See also: gdk_pixbuf_loader_write()
+ *
+ * Return value: %TRUE if the write was successful, or %FALSE if the loader
+ * cannot parse the buffer.
+ *
+ * Since: 2.30
+ */
+gboolean
+gdk_pixbuf_loader_write_bytes (GdkPixbufLoader *loader,
+                               GBytes          *buffer,
+                               GError         **error)
+{
+        g_return_val_if_fail (GDK_IS_PIXBUF_LOADER (loader), FALSE);
+
+        g_return_val_if_fail (buffer != NULL, FALSE);
+        g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+        return gdk_pixbuf_loader_write (loader,
+                                        g_bytes_get_data (buffer, NULL),
+                                        g_bytes_get_size (buffer),
+                                        error);
+}
+
+/**
  * gdk_pixbuf_loader_new:
  *
  * Creates a new pixbuf loader object.
diff --git a/gdk-pixbuf/gdk-pixbuf-loader.h b/gdk-pixbuf/gdk-pixbuf-loader.h
index c9a1612..c71f3ca 100644
--- a/gdk-pixbuf/gdk-pixbuf-loader.h
+++ b/gdk-pixbuf/gdk-pixbuf-loader.h
@@ -94,6 +94,9 @@ gboolean             gdk_pixbuf_loader_write         (GdkPixbufLoader *loader,
                                                      const guchar    *buf,
                                                      gsize            count,
                                                       GError         **error);
+gboolean             gdk_pixbuf_loader_write_bytes   (GdkPixbufLoader *loader,
+                                                      GBytes          *buffer,
+                                                      GError         **error);
 GdkPixbuf *          gdk_pixbuf_loader_get_pixbuf    (GdkPixbufLoader *loader);
 GdkPixbufAnimation * gdk_pixbuf_loader_get_animation (GdkPixbufLoader *loader);
 gboolean             gdk_pixbuf_loader_close         (GdkPixbufLoader *loader,
diff --git a/gdk-pixbuf/gdk-pixbuf.symbols b/gdk-pixbuf/gdk-pixbuf.symbols
index bd98d4d..66ef07b 100644
--- a/gdk-pixbuf/gdk-pixbuf.symbols
+++ b/gdk-pixbuf/gdk-pixbuf.symbols
@@ -199,6 +199,7 @@ gdk_pixbuf_loader_new_with_mime_type
 gdk_pixbuf_loader_new_with_type
 gdk_pixbuf_loader_set_size
 gdk_pixbuf_loader_write
+gdk_pixbuf_loader_write_bytes
 #endif
 #endif