a #GOutputStream to which to save the pixbuf
name of file format
name of options to set, %NULL-terminated
values for named options
optional #GCancellable object, %NULL to ignore
a #GAsyncReadyCallback to call when the pixbuf is saved
the data to pass to the callback function
2.36
Saves @pixbuf to an output stream asynchronously.
For more details see gdk_pixbuf_save_to_streamv(), which is the synchronous version of this function.
When the operation is finished, @callback will be called in the main thread. You can then call gdk_pixbuf_save_to_stream_finish() to get the result of the operation.