--- /dev/null
+/*
+ *
+ * GStreamer
+ * Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <gst/gst.h>
+#include <string.h>
+#include "gstmms.h"
+
+/* Filter signals and args */
+enum
+{
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0,
+ ARG_LOCATION,
+ ARG_BLOCKSIZE
+};
+
+
+GST_DEBUG_CATEGORY (mmssrc_debug);
+#define GST_CATEGORY_DEFAULT mmssrc_debug
+
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/x-ms-asf")
+ );
+
+static void gst_mms_class_init (GstMMSClass * klass);
+static void gst_mms_base_init (GstMMSClass * klass);
+static void gst_mms_init (GstMMS * mmssrc);
+
+static void gst_mms_uri_handler_init (gpointer g_iface, gpointer iface_data);
+
+
+static void gst_mms_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_mms_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static const GstQueryType *gst_mms_get_query_types (GstPad * pad);
+static const GstFormat *gst_mms_get_formats (GstPad * pad);
+static gboolean gst_mms_srcpad_query (GstPad * pad, GstQueryType type,
+ GstFormat * fmt, gint64 * value);
+static GstElementStateReturn gst_mms_change_state (GstElement * elem);
+
+static GstData *gst_mms_get (GstPad * pad);
+
+static GstElementClass *parent_class = NULL;
+
+static void
+_urihandler_init (GType mms_type)
+{
+ static const GInterfaceInfo urihandler_info = {
+ gst_mms_uri_handler_init,
+ NULL,
+ NULL
+ };
+
+ g_type_add_interface_static (mms_type, GST_TYPE_URI_HANDLER,
+ &urihandler_info);
+}
+
+
+GType
+gst_mms_get_type (void)
+{
+ static GType plugin_type = 0;
+
+ if (!plugin_type) {
+ static const GTypeInfo plugin_info = {
+ sizeof (GstMMSClass),
+ (GBaseInitFunc) gst_mms_base_init,
+ NULL,
+ (GClassInitFunc) gst_mms_class_init,
+ NULL,
+ NULL,
+ sizeof (GstMMS),
+ 0,
+ (GInstanceInitFunc) gst_mms_init,
+ };
+ plugin_type = g_type_register_static (GST_TYPE_ELEMENT,
+ "GstMMS", &plugin_info, 0);
+ }
+ return plugin_type;
+}
+
+static void
+gst_mms_base_init (GstMMSClass * klass)
+{
+ static GstElementDetails plugin_details = {
+ "MMS streaming protocol support",
+ "Source/Network",
+ "Receive data streamed via MSFT Multi Media Server protocol",
+ "Maciej Katafiasz <mathrick@users.sourceforge.net>"
+ };
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ GST_DEBUG_CATEGORY_INIT (mmssrc_debug, "mmssrc", 0, "MMS Source Element");
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&src_factory));
+ gst_element_class_set_details (element_class, &plugin_details);
+}
+
+/* initialize the plugin's class */
+static void
+gst_mms_class_init (GstMMSClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ _urihandler_init (GST_TYPE_MMS);
+
+ g_object_class_install_property (gobject_class, ARG_LOCATION,
+ g_param_spec_string ("location", "location",
+ "Host URL to connect to. Accepted are mms://, mmsu://, mmst:// URL types",
+ NULL, G_PARAM_READWRITE));
+
+
+ g_object_class_install_property (gobject_class, ARG_BLOCKSIZE,
+ g_param_spec_int ("blocksize", "blocksize",
+ "How many bytes should be read at once", 0, 65536, 2048,
+ G_PARAM_READWRITE));
+
+ gobject_class->set_property = gst_mms_set_property;
+ gobject_class->get_property = gst_mms_get_property;
+ gstelement_class->change_state = gst_mms_change_state;
+}
+
+/* initialize the new element
+ * instantiate pads and add them to element
+ * set functions
+ * initialize structure
+ */
+static void
+gst_mms_init (GstMMS * mmssrc)
+{
+ GstElementClass *klass = GST_ELEMENT_GET_CLASS (mmssrc);
+
+ mmssrc->srcpad =
+ gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
+ "src"), "src");
+ gst_pad_set_get_function (mmssrc->srcpad, gst_mms_get);
+ gst_pad_set_query_function (mmssrc->srcpad, gst_mms_srcpad_query);
+ gst_pad_set_query_type_function (mmssrc->srcpad, gst_mms_get_query_types);
+ gst_pad_set_formats_function (mmssrc->srcpad, gst_mms_get_formats);
+ gst_element_add_pad (GST_ELEMENT (mmssrc), mmssrc->srcpad);
+
+ mmssrc->uri_name = NULL;
+ mmssrc->connection = NULL;
+ mmssrc->blocksize = 2048;
+}
+
+/*
+ * location querying and so on.
+ */
+
+static const GstQueryType *
+gst_mms_get_query_types (GstPad * pad)
+{
+ static const GstQueryType types[] = {
+ GST_QUERY_TOTAL,
+ GST_QUERY_POSITION,
+ 0
+ };
+
+ return types;
+}
+
+static const GstFormat *
+gst_mms_get_formats (GstPad * pad)
+{
+ static const GstFormat formats[] = {
+ GST_FORMAT_BYTES,
+ 0,
+ };
+
+ return formats;
+}
+
+static gboolean
+gst_mms_srcpad_query (GstPad * pad, GstQueryType type,
+ GstFormat * format, gint64 * value)
+{
+ GstMMS *mmssrc = GST_MMS (gst_pad_get_parent (pad));
+ gboolean res = TRUE;
+
+ if (*format != GST_FORMAT_BYTES)
+ return FALSE;
+
+ switch (type) {
+ case GST_QUERY_TOTAL:
+ *value = (gint64) mms_get_length (mmssrc->connection);
+ break;
+ case GST_QUERY_POSITION:
+ *value = (gint64) mms_get_current_pos (mmssrc->connection);
+ break;
+ default:
+ res = FALSE;
+ break;
+ }
+
+ return res;
+}
+
+/* get function
+ * this function generates new data when needed
+ */
+
+static GstData *
+gst_mms_get (GstPad * pad)
+{
+ GstMMS *mmssrc;
+ GstBuffer *buf;
+ guint8 *data;
+ gint result;
+
+ /* DEBUG */
+ GstFormat fmt = GST_FORMAT_BYTES;
+ gint64 query_res;
+
+ g_return_val_if_fail (GST_IS_PAD (pad), NULL);
+
+ mmssrc = GST_MMS (GST_OBJECT_PARENT (pad));
+ g_return_val_if_fail (GST_IS_MMS (mmssrc), NULL);
+
+ buf = gst_buffer_new ();
+ g_return_val_if_fail (buf, NULL);
+
+ data = g_malloc0 (mmssrc->blocksize);
+ GST_BUFFER_DATA (buf) = data;
+ GST_DEBUG ("mms: data: %p\n", data);
+ g_return_val_if_fail (GST_BUFFER_DATA (buf) != NULL, NULL);
+
+ GST_BUFFER_SIZE (buf) = 0;
+ GST_DEBUG ("reading %d bytes", mmssrc->blocksize);
+ result = mms_read (NULL, mmssrc->connection, data, mmssrc->blocksize);
+ GST_BUFFER_OFFSET (buf) = mms_get_current_pos (mmssrc->connection) - result;
+ GST_BUFFER_SIZE (buf) = result;
+
+
+ /* DEBUG */
+ gst_pad_query (gst_element_get_pad (GST_ELEMENT (mmssrc), "src"),
+ GST_QUERY_POSITION, &fmt, &query_res);
+ GST_DEBUG ("mms position: %lld\n", query_res);
+
+ /* EOS? */
+ if (result == 0) {
+ gst_buffer_unref (buf);
+ GST_DEBUG ("Returning EOS");
+ gst_element_set_eos (GST_ELEMENT (mmssrc));
+ return GST_DATA (gst_event_new (GST_EVENT_EOS));
+ }
+
+ return GST_DATA (buf);
+}
+
+static GstElementStateReturn
+gst_mms_change_state (GstElement * elem)
+{
+ GstMMS *mms = GST_MMS (elem);
+
+ switch (GST_STATE_TRANSITION (elem)) {
+ case GST_STATE_NULL_TO_READY:
+ break;
+ case GST_STATE_READY_TO_NULL:
+ break;
+ case GST_STATE_READY_TO_PAUSED:
+ if (!mms->uri_name)
+ return GST_STATE_FAILURE;
+ /* FIXME: pass some sane arguments here */
+ mms->connection = mms_connect (NULL, NULL, mms->uri_name, 128 * 1024);
+ if (!mms->connection) {
+ return GST_STATE_FAILURE;
+ }
+ break;
+ case GST_STATE_PAUSED_TO_PLAYING:
+ break;
+ default:
+ break;
+ }
+
+ if (GST_ELEMENT_CLASS (parent_class)->change_state)
+ return GST_ELEMENT_CLASS (parent_class)->change_state (elem);
+
+ return GST_STATE_SUCCESS;
+}
+
+static void
+gst_mms_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstMMS *mmssrc;
+
+ g_return_if_fail (GST_IS_MMS (object));
+ mmssrc = GST_MMS (object);
+
+ switch (prop_id) {
+ case ARG_LOCATION:
+ mmssrc->uri_name = g_value_dup_string (value);
+ break;
+ case ARG_BLOCKSIZE:
+ mmssrc->blocksize = g_value_get_int (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_mms_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstMMS *mmssrc;
+
+ g_return_if_fail (GST_IS_MMS (object));
+ mmssrc = GST_MMS (object);
+
+ switch (prop_id) {
+ case ARG_LOCATION:
+ g_value_set_string (value, mmssrc->uri_name);
+ break;
+ case ARG_BLOCKSIZE:
+ g_value_set_int (value, mmssrc->blocksize);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/* entry point to initialize the plug-in
+ * initialize the plug-in itself
+ * register the element factories and pad templates
+ * register the features
+ */
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "mmssrc", GST_RANK_NONE, GST_TYPE_MMS);
+}
+
+static guint
+gst_mms_uri_get_type (void)
+{
+ return GST_URI_SRC;
+}
+
+static gchar **
+gst_mms_uri_get_protocols (void)
+{
+ static gchar *protocols[] = { "mms", "mmsh", "mmst", "mmsu", NULL };
+
+ return protocols;
+}
+
+static const gchar *
+gst_mms_uri_get_uri (GstURIHandler * handler)
+{
+ GstMMS *src = GST_MMS (handler);
+
+ return src->uri_name;
+}
+
+static gboolean
+gst_mms_uri_set_uri (GstURIHandler * handler, const gchar * uri)
+{
+ gchar *protocol;
+ GstMMS *src = GST_MMS (handler);
+
+ protocol = gst_uri_get_protocol (uri);
+ if (strcmp (protocol, "mms") != 0) {
+ g_free (protocol);
+ return FALSE;
+ }
+ g_free (protocol);
+ g_object_set (src, "location", uri);
+
+ return TRUE;
+}
+
+static void
+gst_mms_uri_handler_init (gpointer g_iface, gpointer iface_data)
+{
+ GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
+
+ iface->get_type = gst_mms_uri_get_type;
+ iface->get_protocols = gst_mms_uri_get_protocols;
+ iface->get_uri = gst_mms_uri_get_uri;
+ iface->set_uri = gst_mms_uri_set_uri;
+}
+
+
+/* this is the structure that gst-register looks for
+ * so keep the name plugin_desc, or you cannot get your plug-in registered */
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "mms",
+ "Microsoft Multi Media Server streaming protocol support",
+ plugin_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")
projects / platform / upstream / gstreamer.git / commitdiff