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186 lines
5.1 KiB
C
186 lines
5.1 KiB
C
/* GStreamer
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*
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* Copyright (C) 2007 Rene Stadler <mail@renestadler.de>
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* Copyright (C) 2007-2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-giostreamsrc
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*
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* This plugin reads data from a custom GIO #GInputStream.
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*
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* It can, for example, be used to read data from memory with a
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* #GMemoryInputStream or to read from a file with a
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* #GFileInputStream.
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*
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* <refsect2>
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* <title>Example code</title>
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* <para>
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* The following example reads data from a #GMemoryInputStream.
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* |[
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#include <gst/gst.h>
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#include <gio/gio.h>
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...
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GstElement *src;
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GMemoryInputStream *stream;
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// in_data will contain the data to send
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guint8 *in_data;
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gint i;
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...
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in_data = g_new (guint8, 512);
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for (i = 0; i < 512; i++)
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in_data[i] = i % 256;
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stream = G_MEMORY_INPUT_STREAM (g_memory_input_stream_new_from_data (in_data, 512,
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(GDestroyNotify) g_free));
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src = gst_element_factory_make ("giostreamsrc", "src");
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g_object_set (G_OBJECT (src), "stream", stream, NULL);
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...
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* ]|
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* </para>
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "gstgiostreamsrc.h"
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GST_DEBUG_CATEGORY_STATIC (gst_gio_stream_src_debug);
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#define GST_CAT_DEFAULT gst_gio_stream_src_debug
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enum
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{
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PROP_0,
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PROP_STREAM
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};
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#define gst_gio_stream_src_parent_class parent_class
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G_DEFINE_TYPE (GstGioStreamSrc, gst_gio_stream_src, GST_TYPE_GIO_BASE_SRC);
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static void gst_gio_stream_src_finalize (GObject * object);
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static void gst_gio_stream_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_gio_stream_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GInputStream *gst_gio_stream_src_get_stream (GstGioBaseSrc * bsrc);
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static void
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gst_gio_stream_src_class_init (GstGioStreamSrcClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstElementClass *gstelement_class = (GstElementClass *) klass;
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GstGioBaseSrcClass *gstgiobasesrc_class = (GstGioBaseSrcClass *) klass;
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GST_DEBUG_CATEGORY_INIT (gst_gio_stream_src_debug, "gio_stream_src", 0,
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"GIO source");
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gobject_class->finalize = gst_gio_stream_src_finalize;
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gobject_class->set_property = gst_gio_stream_src_set_property;
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gobject_class->get_property = gst_gio_stream_src_get_property;
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g_object_class_install_property (gobject_class, PROP_STREAM,
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g_param_spec_object ("stream", "Stream", "Stream to read from",
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G_TYPE_INPUT_STREAM, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_set_details_simple (gstelement_class, "GIO stream source",
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"Source",
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"Read from any GIO stream",
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"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
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gstgiobasesrc_class->get_stream =
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GST_DEBUG_FUNCPTR (gst_gio_stream_src_get_stream);
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}
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static void
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gst_gio_stream_src_init (GstGioStreamSrc * src)
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{
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}
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static void
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gst_gio_stream_src_finalize (GObject * object)
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{
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GstGioStreamSrc *src = GST_GIO_STREAM_SRC (object);
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if (src->stream) {
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g_object_unref (src->stream);
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src->stream = NULL;
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}
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GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
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}
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static void
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gst_gio_stream_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstGioStreamSrc *src = GST_GIO_STREAM_SRC (object);
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switch (prop_id) {
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case PROP_STREAM:{
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GObject *stream;
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if (GST_STATE (src) == GST_STATE_PLAYING ||
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GST_STATE (src) == GST_STATE_PAUSED) {
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GST_WARNING
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("Setting a new stream not supported in PLAYING or PAUSED state");
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break;
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}
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stream = g_value_dup_object (value);
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if (src->stream)
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g_object_unref (src->stream);
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src->stream = G_INPUT_STREAM (stream);
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break;
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}
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_gio_stream_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstGioStreamSrc *src = GST_GIO_STREAM_SRC (object);
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switch (prop_id) {
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case PROP_STREAM:
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g_value_set_object (value, src->stream);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GInputStream *
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gst_gio_stream_src_get_stream (GstGioBaseSrc * bsrc)
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{
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GstGioStreamSrc *src = GST_GIO_STREAM_SRC (bsrc);
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return (src->stream) ? g_object_ref (src->stream) : NULL;
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}
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