2 * Copyright (C) 2008 Wim Taymans <wim.taymans at gmail.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
22 #include "rtsp-media-factory-uri.h"
24 #define DEFAULT_URI NULL
25 #define DEFAULT_USE_GSTPAY FALSE
36 #define RAW_VIDEO_CAPS \
39 #define RAW_AUDIO_CAPS \
42 static GstStaticCaps raw_video_caps = GST_STATIC_CAPS (RAW_VIDEO_CAPS);
43 static GstStaticCaps raw_audio_caps = GST_STATIC_CAPS (RAW_AUDIO_CAPS);
47 GstRTSPMediaFactoryURI *factory;
52 free_data (FactoryData * data)
54 g_object_unref (data->factory);
58 static const gchar *factory_key = "GstRTSPMediaFactoryURI";
60 GST_DEBUG_CATEGORY_STATIC (rtsp_media_factory_uri_debug);
61 #define GST_CAT_DEFAULT rtsp_media_factory_uri_debug
63 static void gst_rtsp_media_factory_uri_get_property (GObject * object,
64 guint propid, GValue * value, GParamSpec * pspec);
65 static void gst_rtsp_media_factory_uri_set_property (GObject * object,
66 guint propid, const GValue * value, GParamSpec * pspec);
67 static void gst_rtsp_media_factory_uri_finalize (GObject * obj);
69 static GstElement *rtsp_media_factory_uri_create_element (GstRTSPMediaFactory *
70 factory, const GstRTSPUrl * url);
72 G_DEFINE_TYPE (GstRTSPMediaFactoryURI, gst_rtsp_media_factory_uri,
73 GST_TYPE_RTSP_MEDIA_FACTORY);
76 gst_rtsp_media_factory_uri_class_init (GstRTSPMediaFactoryURIClass * klass)
78 GObjectClass *gobject_class;
79 GstRTSPMediaFactoryClass *mediafactory_class;
81 gobject_class = G_OBJECT_CLASS (klass);
82 mediafactory_class = GST_RTSP_MEDIA_FACTORY_CLASS (klass);
84 gobject_class->get_property = gst_rtsp_media_factory_uri_get_property;
85 gobject_class->set_property = gst_rtsp_media_factory_uri_set_property;
86 gobject_class->finalize = gst_rtsp_media_factory_uri_finalize;
89 * GstRTSPMediaFactoryURI::uri:
91 * The uri of the resource that will be served by this factory.
93 g_object_class_install_property (gobject_class, PROP_URI,
94 g_param_spec_string ("uri", "URI",
95 "The URI of the resource to stream", DEFAULT_URI,
96 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
98 * GstRTSPMediaFactoryURI::use-gstpay:
100 * Allow the usage of gstpay in order to avoid decoding of compressed formats
101 * without a payloader.
103 g_object_class_install_property (gobject_class, PROP_USE_GSTPAY,
104 g_param_spec_boolean ("use-gstpay", "Use gstpay",
105 "Use the gstpay payloader to avoid decoding", DEFAULT_USE_GSTPAY,
106 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
108 mediafactory_class->create_element = rtsp_media_factory_uri_create_element;
110 GST_DEBUG_CATEGORY_INIT (rtsp_media_factory_uri_debug, "rtspmediafactoryuri",
111 0, "GstRTSPMediaFactoryUri");
122 payloader_filter (GstPluginFeature * feature, FilterData * data)
125 GstElementFactory *fact;
128 /* we only care about element factories */
129 if (G_UNLIKELY (!GST_IS_ELEMENT_FACTORY (feature)))
132 if (gst_plugin_feature_get_rank (feature) < GST_RANK_MARGINAL)
135 fact = GST_ELEMENT_FACTORY_CAST (feature);
137 klass = gst_element_factory_get_klass (fact);
139 if (strstr (klass, "Decoder"))
140 list = &data->decode;
141 else if (strstr (klass, "Demux"))
143 else if (strstr (klass, "Parser") && strstr (klass, "Codec"))
145 else if (strstr (klass, "Payloader") && strstr (klass, "RTP"))
146 list = &data->payload;
149 GST_DEBUG ("adding %s", GST_OBJECT_NAME (fact));
150 *list = g_list_prepend (*list, fact);
157 gst_rtsp_media_factory_uri_init (GstRTSPMediaFactoryURI * factory)
159 FilterData data = { NULL, NULL, NULL };
161 factory->uri = g_strdup (DEFAULT_URI);
162 factory->use_gstpay = DEFAULT_USE_GSTPAY;
164 /* get the feature list using the filter */
165 gst_registry_feature_filter (gst_registry_get (), (GstPluginFeatureFilter)
166 payloader_filter, FALSE, &data);
169 g_list_sort (data.demux, gst_plugin_feature_rank_compare_func);
170 factory->payloaders =
171 g_list_sort (data.payload, gst_plugin_feature_rank_compare_func);
173 g_list_sort (data.decode, gst_plugin_feature_rank_compare_func);
175 factory->raw_vcaps = gst_static_caps_get (&raw_video_caps);
176 factory->raw_acaps = gst_static_caps_get (&raw_audio_caps);
180 gst_rtsp_media_factory_uri_finalize (GObject * obj)
182 GstRTSPMediaFactoryURI *factory = GST_RTSP_MEDIA_FACTORY_URI (obj);
184 g_free (factory->uri);
185 gst_plugin_feature_list_free (factory->demuxers);
186 gst_plugin_feature_list_free (factory->payloaders);
187 gst_plugin_feature_list_free (factory->decoders);
188 gst_caps_unref (factory->raw_vcaps);
189 gst_caps_unref (factory->raw_acaps);
191 G_OBJECT_CLASS (gst_rtsp_media_factory_uri_parent_class)->finalize (obj);
195 gst_rtsp_media_factory_uri_get_property (GObject * object, guint propid,
196 GValue * value, GParamSpec * pspec)
198 GstRTSPMediaFactoryURI *factory = GST_RTSP_MEDIA_FACTORY_URI (object);
202 g_value_take_string (value, gst_rtsp_media_factory_uri_get_uri (factory));
204 case PROP_USE_GSTPAY:
205 g_value_set_boolean (value, factory->use_gstpay);
208 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
213 gst_rtsp_media_factory_uri_set_property (GObject * object, guint propid,
214 const GValue * value, GParamSpec * pspec)
216 GstRTSPMediaFactoryURI *factory = GST_RTSP_MEDIA_FACTORY_URI (object);
220 gst_rtsp_media_factory_uri_set_uri (factory, g_value_get_string (value));
222 case PROP_USE_GSTPAY:
223 factory->use_gstpay = g_value_get_boolean (value);
226 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
231 * gst_rtsp_media_factory_uri_new:
233 * Create a new #GstRTSPMediaFactoryURI instance.
235 * Returns: a new #GstRTSPMediaFactoryURI object.
237 GstRTSPMediaFactoryURI *
238 gst_rtsp_media_factory_uri_new (void)
240 GstRTSPMediaFactoryURI *result;
242 result = g_object_new (GST_TYPE_RTSP_MEDIA_FACTORY_URI, NULL);
248 * gst_rtsp_media_factory_uri_set_uri:
249 * @factory: a #GstRTSPMediaFactory
250 * @uri: the uri the stream
252 * Set the URI of the resource that will be streamed by this factory.
255 gst_rtsp_media_factory_uri_set_uri (GstRTSPMediaFactoryURI * factory,
258 g_return_if_fail (GST_IS_RTSP_MEDIA_FACTORY_URI (factory));
259 g_return_if_fail (uri != NULL);
261 GST_RTSP_MEDIA_FACTORY_LOCK (factory);
262 g_free (factory->uri);
263 factory->uri = g_strdup (uri);
264 GST_RTSP_MEDIA_FACTORY_UNLOCK (factory);
268 * gst_rtsp_media_factory_uri_get_uri:
269 * @factory: a #GstRTSPMediaFactory
271 * Get the URI that will provide media for this factory.
273 * Returns: the configured URI. g_free() after usage.
276 gst_rtsp_media_factory_uri_get_uri (GstRTSPMediaFactoryURI * factory)
280 g_return_val_if_fail (GST_IS_RTSP_MEDIA_FACTORY_URI (factory), NULL);
282 GST_RTSP_MEDIA_FACTORY_LOCK (factory);
283 result = g_strdup (factory->uri);
284 GST_RTSP_MEDIA_FACTORY_UNLOCK (factory);
289 static GstElementFactory *
290 find_payloader (GstRTSPMediaFactoryURI * urifact, GstCaps * caps)
293 GstElementFactory *factory = NULL;
294 gboolean autoplug_more = FALSE;
296 /* first find a demuxer that can link */
297 list = gst_element_factory_list_filter (urifact->demuxers, caps,
298 GST_PAD_SINK, FALSE);
301 GstStructure *structure = gst_caps_get_structure (caps, 0);
302 gboolean parsed = FALSE;
304 gst_structure_get_boolean (structure, "parsed", &parsed);
306 /* Avoid plugging parsers in a loop. This is not 100% correct, as some
307 * parsers don't set parsed=true in caps. We should do something like
308 * decodebin does and track decode chains and elements plugged in those
315 for (walk = list; walk; walk = walk->next) {
316 factory = GST_ELEMENT_FACTORY (walk->data);
317 klass = gst_element_factory_get_klass (factory);
318 if (strstr (klass, "Parser"))
319 /* caps have parsed=true, so skip this parser to avoid loops */
322 autoplug_more = TRUE;
326 /* caps don't have parsed=true set and we have a demuxer/parser */
327 autoplug_more = TRUE;
330 gst_plugin_feature_list_free (list);
334 /* we have a demuxer, try that one first */
337 /* no demuxer try a depayloader */
338 list = gst_element_factory_list_filter (urifact->payloaders, caps,
339 GST_PAD_SINK, FALSE);
342 if (urifact->use_gstpay) {
343 /* no depayloader or parser/demuxer, use gstpay when allowed */
344 factory = gst_element_factory_find ("rtpgstpay");
346 /* no depayloader, try a decoder, we'll get to a payloader for a decoded
347 * video or audio format, worst case. */
348 list = gst_element_factory_list_filter (urifact->decoders, caps,
349 GST_PAD_SINK, FALSE);
352 /* we have a decoder, try that one first */
353 gst_plugin_feature_list_free (list);
360 factory = GST_ELEMENT_FACTORY_CAST (list->data);
361 g_object_ref (factory);
362 gst_plugin_feature_list_free (list);
368 autoplug_continue_cb (GstElement * uribin, GstPad * pad, GstCaps * caps,
369 GstElement * element)
372 GstElementFactory *factory;
374 GST_DEBUG ("found pad %s:%s of caps %" GST_PTR_FORMAT,
375 GST_DEBUG_PAD_NAME (pad), caps);
377 data = g_object_get_data (G_OBJECT (element), factory_key);
379 if (!(factory = find_payloader (data->factory, caps)))
382 /* we found a payloader, stop autoplugging so we can plug the
384 GST_DEBUG ("found factory %s",
385 gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
386 gst_object_unref (factory);
393 /* no payloader, continue autoplugging */
394 GST_DEBUG ("no payloader found");
400 pad_added_cb (GstElement * uribin, GstPad * pad, GstElement * element)
402 GstRTSPMediaFactoryURI *urifact;
404 GstElementFactory *factory;
405 GstElement *payloader;
407 GstPad *sinkpad, *srcpad, *ghostpad;
411 GST_DEBUG ("added pad %s:%s", GST_DEBUG_PAD_NAME (pad));
413 /* link the element now and expose the pad */
414 data = g_object_get_data (G_OBJECT (element), factory_key);
415 urifact = data->factory;
417 /* ref to make refcounting easier later */
418 gst_object_ref (pad);
419 padname = gst_pad_get_name (pad);
421 /* get pad caps first, then call get_caps, then fail */
422 if ((caps = gst_pad_get_current_caps (pad)) == NULL)
423 if ((caps = gst_pad_query_caps (pad, NULL)) == NULL)
426 /* check for raw caps */
427 if (gst_caps_can_intersect (caps, urifact->raw_vcaps)) {
428 /* we have raw video caps, insert converter */
429 convert = gst_element_factory_make ("videoconvert", NULL);
430 } else if (gst_caps_can_intersect (caps, urifact->raw_acaps)) {
431 /* we have raw audio caps, insert converter */
432 convert = gst_element_factory_make ("audioconvert", NULL);
438 gst_bin_add (GST_BIN_CAST (element), convert);
439 gst_element_set_state (convert, GST_STATE_PLAYING);
441 sinkpad = gst_element_get_static_pad (convert, "sink");
442 gst_pad_link (pad, sinkpad);
443 gst_object_unref (sinkpad);
445 /* unref old pad, we reffed before */
446 gst_object_unref (pad);
448 /* continue with new pad and caps */
449 pad = gst_element_get_static_pad (convert, "src");
450 if ((caps = gst_pad_get_current_caps (pad)) == NULL)
451 if ((caps = gst_pad_query_caps (pad, NULL)) == NULL)
455 if (!(factory = find_payloader (urifact, caps)))
458 gst_caps_unref (caps);
460 /* we have a payloader now */
461 GST_DEBUG ("found payloader factory %s",
462 gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
464 payloader = gst_element_factory_create (factory, NULL);
465 if (payloader == NULL)
468 g_object_set (payloader, "pt", data->pt, NULL);
471 if (g_object_class_find_property (G_OBJECT_GET_CLASS (payloader),
473 g_object_set (payloader, "buffer-list", TRUE, NULL);
475 /* add the payloader to the pipeline */
476 gst_bin_add (GST_BIN_CAST (element), payloader);
477 gst_element_set_state (payloader, GST_STATE_PLAYING);
479 /* link the pad to the sinkpad of the payloader */
480 sinkpad = gst_element_get_static_pad (payloader, "sink");
481 gst_pad_link (pad, sinkpad);
482 gst_object_unref (sinkpad);
483 gst_object_unref (pad);
485 /* now expose the srcpad of the payloader as a ghostpad with the same name
486 * as the uridecodebin pad name. */
487 srcpad = gst_element_get_static_pad (payloader, "src");
488 ghostpad = gst_ghost_pad_new (padname, srcpad);
489 gst_object_unref (srcpad);
492 gst_pad_set_active (ghostpad, TRUE);
493 gst_element_add_pad (element, ghostpad);
500 GST_WARNING ("could not get caps from pad");
502 gst_object_unref (pad);
507 GST_DEBUG ("no payloader found");
509 gst_caps_unref (caps);
510 gst_object_unref (pad);
515 GST_ERROR ("could not create payloader from factory");
517 gst_caps_unref (caps);
518 gst_object_unref (pad);
524 no_more_pads_cb (GstElement * uribin, GstElement * element)
526 GST_DEBUG ("no-more-pads");
527 gst_element_no_more_pads (element);
531 rtsp_media_factory_uri_create_element (GstRTSPMediaFactory * factory,
532 const GstRTSPUrl * url)
534 GstElement *topbin, *element, *uribin;
535 GstRTSPMediaFactoryURI *urifact;
538 urifact = GST_RTSP_MEDIA_FACTORY_URI_CAST (factory);
540 GST_LOG ("creating element");
542 topbin = gst_bin_new ("GstRTSPMediaFactoryURI");
543 g_assert (topbin != NULL);
545 /* our bin will dynamically expose payloaded pads */
546 element = gst_bin_new ("dynpay0");
547 g_assert (element != NULL);
549 uribin = gst_element_factory_make ("uridecodebin", "uribin");
551 goto no_uridecodebin;
553 g_object_set (uribin, "uri", urifact->uri, NULL);
555 /* keep factory data around */
556 data = g_new0 (FactoryData, 1);
557 data->factory = g_object_ref (factory);
560 g_object_set_data_full (G_OBJECT (element), factory_key,
561 data, (GDestroyNotify) free_data);
563 /* connect to the signals */
564 g_signal_connect (uribin, "autoplug-continue",
565 (GCallback) autoplug_continue_cb, element);
566 g_signal_connect (uribin, "pad-added", (GCallback) pad_added_cb, element);
567 g_signal_connect (uribin, "no-more-pads", (GCallback) no_more_pads_cb,
570 gst_bin_add (GST_BIN_CAST (element), uribin);
571 gst_bin_add (GST_BIN_CAST (topbin), element);
577 g_critical ("can't create uridecodebin element");
578 g_object_unref (element);