/* GStreamer * * Copyright (C) 2007 Rene Stadler <mail@renestadler.de> * Copyright (C) 2007-2009 Sebastian Dröge <sebastian.droege@collabora.co.uk> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /** * SECTION:element-giostreamsrc * * This plugin reads data from a custom GIO #GInputStream. * * It can, for example, be used to read data from memory with a * #GMemoryInputStream or to read from a file with a * #GFileInputStream. * * <refsect2> * <title>Example code</title> * <para> * The following example reads data from a #GMemoryInputStream. * |[ #include <gst/gst.h> #include <gio/gio.h> ... GstElement *src; GMemoryInputStream *stream; // in_data will contain the data to send guint8 *in_data; gint i; ... in_data = g_new (guint8, 512); for (i = 0; i < 512; i++) in_data[i] = i % 256; stream = G_MEMORY_INPUT_STREAM (g_memory_input_stream_new_from_data (in_data, 512, (GDestroyNotify) g_free)); src = gst_element_factory_make ("giostreamsrc", "src"); g_object_set (G_OBJECT (src), "stream", stream, NULL); ... * ]| * </para> * </refsect2> */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "gstgiostreamsrc.h" GST_DEBUG_CATEGORY_STATIC (gst_gio_stream_src_debug); #define GST_CAT_DEFAULT gst_gio_stream_src_debug enum { PROP_0, PROP_STREAM }; #define gst_gio_stream_src_parent_class parent_class G_DEFINE_TYPE (GstGioStreamSrc, gst_gio_stream_src, GST_TYPE_GIO_BASE_SRC); static void gst_gio_stream_src_finalize (GObject * object); static void gst_gio_stream_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_gio_stream_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GInputStream *gst_gio_stream_src_get_stream (GstGioBaseSrc * bsrc); static void gst_gio_stream_src_class_init (GstGioStreamSrcClass * klass) { GObjectClass *gobject_class = (GObjectClass *) klass; GstElementClass *gstelement_class = (GstElementClass *) klass; GstGioBaseSrcClass *gstgiobasesrc_class = (GstGioBaseSrcClass *) klass; GST_DEBUG_CATEGORY_INIT (gst_gio_stream_src_debug, "gio_stream_src", 0, "GIO source"); gobject_class->finalize = gst_gio_stream_src_finalize; gobject_class->set_property = gst_gio_stream_src_set_property; gobject_class->get_property = gst_gio_stream_src_get_property; g_object_class_install_property (gobject_class, PROP_STREAM, g_param_spec_object ("stream", "Stream", "Stream to read from", G_TYPE_INPUT_STREAM, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_set_static_metadata (gstelement_class, "GIO stream source", "Source", "Read from any GIO stream", "Sebastian Dröge <sebastian.droege@collabora.co.uk>"); gstgiobasesrc_class->get_stream = GST_DEBUG_FUNCPTR (gst_gio_stream_src_get_stream); } static void gst_gio_stream_src_init (GstGioStreamSrc * src) { } static void gst_gio_stream_src_finalize (GObject * object) { GstGioStreamSrc *src = GST_GIO_STREAM_SRC (object); if (src->stream) { g_object_unref (src->stream); src->stream = NULL; } GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object)); } static void gst_gio_stream_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstGioStreamSrc *src = GST_GIO_STREAM_SRC (object); switch (prop_id) { case PROP_STREAM:{ GObject *stream; if (GST_STATE (src) == GST_STATE_PLAYING || GST_STATE (src) == GST_STATE_PAUSED) { GST_WARNING ("Setting a new stream not supported in PLAYING or PAUSED state"); break; } stream = g_value_dup_object (value); if (src->stream) g_object_unref (src->stream); src->stream = G_INPUT_STREAM (stream); break; } default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_gio_stream_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstGioStreamSrc *src = GST_GIO_STREAM_SRC (object); switch (prop_id) { case PROP_STREAM: g_value_set_object (value, src->stream); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GInputStream * gst_gio_stream_src_get_stream (GstGioBaseSrc * bsrc) { GstGioStreamSrc *src = GST_GIO_STREAM_SRC (bsrc); return (src->stream) ? g_object_ref (src->stream) : NULL; }