2 * Copyright (C) <2011> Sebastian Dröge <sebastian.droege@collabora.co.uk>
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., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
24 #include "gstplaysinkvideoconvert.h"
26 #include <gst/pbutils/pbutils.h>
27 #include <gst/gst-i18n-plugin.h>
29 GST_DEBUG_CATEGORY_STATIC (gst_play_sink_video_convert_debug);
30 #define GST_CAT_DEFAULT gst_play_sink_video_convert_debug
32 #define parent_class gst_play_sink_video_convert_parent_class
34 G_DEFINE_TYPE (GstPlaySinkVideoConvert, gst_play_sink_video_convert,
37 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
42 static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
48 is_raw_caps (GstCaps * caps)
54 n = gst_caps_get_size (caps);
55 for (i = 0; i < n; i++) {
56 s = gst_caps_get_structure (caps, i);
57 name = gst_structure_get_name (s);
58 if (!g_str_has_prefix (name, "video/x-raw"))
66 post_missing_element_message (GstPlaySinkVideoConvert * self,
71 msg = gst_missing_element_message_new (GST_ELEMENT_CAST (self), name);
72 gst_element_post_message (GST_ELEMENT_CAST (self), msg);
76 distribute_running_time (GstElement * element, const GstSegment * segment)
81 pad = gst_element_get_static_pad (element, "sink");
84 event = gst_event_new_new_segment_full (FALSE, segment->rate,
85 segment->applied_rate, segment->format, 0, segment->accum, 0);
86 gst_pad_send_event (pad, event);
89 event = gst_event_new_new_segment_full (FALSE, segment->rate,
90 segment->applied_rate, segment->format,
91 segment->start, segment->stop, segment->time);
92 gst_pad_send_event (pad, event);
94 gst_object_unref (pad);
98 gst_play_sink_video_convert_add_identity (GstPlaySinkVideoConvert * self)
100 self->identity = gst_element_factory_make ("identity", "identity");
101 if (self->identity == NULL) {
102 post_missing_element_message (self, "identity");
103 GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN,
104 (_("Missing element '%s' - check your GStreamer installation."),
105 "identity"), ("video rendering might fail"));
107 gst_bin_add (GST_BIN_CAST (self), self->identity);
108 gst_element_sync_state_with_parent (self->identity);
109 distribute_running_time (self->identity, &self->segment);
114 gst_play_sink_video_convert_set_targets (GstPlaySinkVideoConvert * self,
115 GstElement * head, GstElement * tail)
119 pad = gst_element_get_static_pad (head, "sink");
120 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), pad);
121 gst_object_unref (pad);
123 pad = gst_element_get_static_pad (tail, "src");
124 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), pad);
125 gst_object_unref (pad);
129 pad_blocked_cb (GstPad * pad, gboolean blocked, GstPlaySinkVideoConvert * self)
134 GstBin *bin = GST_BIN_CAST (self);
135 GstElement *head = NULL, *prev = NULL;
137 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
138 self->sink_proxypad_blocked = blocked;
139 GST_DEBUG_OBJECT (self, "Pad blocked: %d", blocked);
143 /* There must be a peer at this point */
144 peer = gst_pad_get_peer (self->sinkpad);
145 caps = gst_pad_get_negotiated_caps (peer);
147 caps = gst_pad_get_caps_reffed (peer);
148 gst_object_unref (peer);
150 raw = is_raw_caps (caps);
151 GST_DEBUG_OBJECT (self, "Caps %" GST_PTR_FORMAT " are raw: %d", caps, raw);
152 gst_caps_unref (caps);
154 if (raw == self->raw)
160 GST_DEBUG_OBJECT (self, "Creating raw conversion pipeline");
162 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), NULL);
163 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
165 self->conv = gst_element_factory_make (COLORSPACE, "conv");
166 if (self->conv == NULL) {
167 post_missing_element_message (self, COLORSPACE);
168 GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN,
169 (_("Missing element '%s' - check your GStreamer installation."),
170 COLORSPACE), ("video rendering might fail"));
172 gst_bin_add (bin, self->conv);
173 gst_element_sync_state_with_parent (self->conv);
174 distribute_running_time (self->conv, &self->segment);
175 prev = head = self->conv;
178 self->scale = gst_element_factory_make ("videoscale", "scale");
179 if (self->scale == NULL) {
180 post_missing_element_message (self, "videoscale");
181 GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN,
182 (_("Missing element '%s' - check your GStreamer installation."),
183 "videoscale"), ("possibly a liboil version mismatch?"));
185 /* Add black borders if necessary to keep the DAR */
186 g_object_set (self->scale, "add-borders", TRUE, NULL);
187 gst_bin_add (bin, self->scale);
188 gst_element_sync_state_with_parent (self->scale);
189 distribute_running_time (self->scale, &self->segment);
191 if (!gst_element_link_pads_full (prev, "src", self->scale, "sink",
192 GST_PAD_LINK_CHECK_TEMPLATE_CAPS))
200 GST_DEBUG_OBJECT (self, "Raw conversion pipeline created");
203 GST_DEBUG_OBJECT (self, "Removing raw conversion pipeline");
205 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), NULL);
206 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
209 gst_element_set_state (self->conv, GST_STATE_NULL);
210 gst_bin_remove (bin, self->conv);
214 gst_element_set_state (self->scale, GST_STATE_NULL);
215 gst_bin_remove (bin, self->scale);
219 GST_DEBUG_OBJECT (self, "Raw conversion pipeline removed");
222 g_assert ((head != NULL) == (prev != NULL));
224 /* to make things simple and avoid counterintuitive pad juggling,
225 ensure there is at least one element in the list */
227 gst_play_sink_video_convert_add_identity (self);
228 prev = head = self->identity;
231 gst_play_sink_video_convert_set_targets (self, head, prev);
234 gst_pad_set_blocked_async_full (self->sink_proxypad, FALSE,
235 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
236 (GDestroyNotify) gst_object_unref);
239 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
244 GST_ELEMENT_ERROR (self, CORE, PAD,
245 (NULL), ("Failed to configure the video converter."));
247 /* use a simple identity, better than nothing */
248 gst_play_sink_video_convert_add_identity (self);
249 gst_play_sink_video_convert_set_targets (self, self->identity,
252 gst_pad_set_blocked_async_full (self->sink_proxypad, FALSE,
253 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
254 (GDestroyNotify) gst_object_unref);
256 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
262 gst_play_sink_video_convert_sink_event (GstPad * pad, GstEvent * event)
264 GstPlaySinkVideoConvert *self =
265 GST_PLAY_SINK_VIDEO_CONVERT (gst_pad_get_parent (pad));
268 ret = gst_proxy_pad_event_default (pad, gst_event_ref (event));
270 if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
272 gdouble rate, applied_rate;
274 gint64 start, stop, position;
276 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
277 gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
278 &format, &start, &stop, &position);
280 GST_DEBUG_OBJECT (self, "Segment before %" GST_SEGMENT_FORMAT,
282 gst_segment_set_newsegment_full (&self->segment, update, rate, applied_rate,
283 format, start, stop, position);
284 GST_DEBUG_OBJECT (self, "Segment after %" GST_SEGMENT_FORMAT,
286 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
287 } else if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_STOP) {
288 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
289 GST_DEBUG_OBJECT (self, "Resetting segment");
290 gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
291 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
294 gst_event_unref (event);
295 gst_object_unref (self);
301 gst_play_sink_video_convert_sink_setcaps (GstPad * pad, GstCaps * caps)
303 GstPlaySinkVideoConvert *self =
304 GST_PLAY_SINK_VIDEO_CONVERT (gst_pad_get_parent (pad));
308 gboolean reconfigure = FALSE;
310 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
311 s = gst_caps_get_structure (caps, 0);
312 name = gst_structure_get_name (s);
314 if (g_str_has_prefix (name, "video/x-raw-")) {
315 if (!self->raw && !gst_pad_is_blocked (self->sink_proxypad)) {
316 GST_DEBUG_OBJECT (self, "Changing caps from non-raw to raw");
318 gst_pad_set_blocked_async_full (self->sink_proxypad, TRUE,
319 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
320 (GDestroyNotify) gst_object_unref);
323 if (self->raw && !gst_pad_is_blocked (self->sink_proxypad)) {
324 GST_DEBUG_OBJECT (self, "Changing caps from raw to non-raw");
326 gst_pad_set_blocked_async_full (self->sink_proxypad, TRUE,
327 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
328 (GDestroyNotify) gst_object_unref);
332 /* Otherwise the setcaps below fails */
334 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), NULL);
335 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
337 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
339 ret = gst_ghost_pad_setcaps_default (pad, caps);
341 GST_DEBUG_OBJECT (self, "Setting sink caps %" GST_PTR_FORMAT ": %d", caps,
344 gst_object_unref (self);
350 gst_play_sink_video_convert_getcaps (GstPad * pad)
352 GstPlaySinkVideoConvert *self =
353 GST_PLAY_SINK_VIDEO_CONVERT (gst_pad_get_parent (pad));
355 GstPad *otherpad, *peer;
357 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
358 otherpad = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (pad));
360 if (pad == self->srcpad) {
361 otherpad = self->sink_proxypad;
362 } else if (pad == self->sinkpad) {
364 GST_PAD_CAST (gst_proxy_pad_get_internal (GST_PROXY_PAD
367 GST_ERROR_OBJECT (pad, "Not one of our pads");
370 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
373 peer = gst_pad_get_peer (otherpad);
375 ret = gst_pad_get_caps_reffed (peer);
376 gst_object_unref (peer);
378 ret = gst_caps_new_any ();
380 gst_object_unref (otherpad);
382 GST_WARNING_OBJECT (self, "Could not traverse bin");
383 ret = gst_caps_new_any ();
386 gst_object_unref (self);
392 gst_play_sink_video_convert_finalize (GObject * object)
394 GstPlaySinkVideoConvert *self = GST_PLAY_SINK_VIDEO_CONVERT_CAST (object);
396 gst_object_unref (self->sink_proxypad);
397 g_mutex_free (self->lock);
399 G_OBJECT_CLASS (parent_class)->finalize (object);
402 static GstStateChangeReturn
403 gst_play_sink_video_convert_change_state (GstElement * element,
404 GstStateChange transition)
406 GstStateChangeReturn ret;
407 GstPlaySinkVideoConvert *self = GST_PLAY_SINK_VIDEO_CONVERT_CAST (element);
409 switch (transition) {
410 case GST_STATE_CHANGE_PAUSED_TO_READY:
411 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
412 if (gst_pad_is_blocked (self->sink_proxypad))
413 gst_pad_set_blocked_async_full (self->sink_proxypad, FALSE,
414 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
415 (GDestroyNotify) gst_object_unref);
416 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
422 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
423 if (ret == GST_STATE_CHANGE_FAILURE)
426 switch (transition) {
427 case GST_STATE_CHANGE_PAUSED_TO_READY:
428 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
429 gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
431 gst_element_set_state (self->conv, GST_STATE_NULL);
432 gst_bin_remove (GST_BIN_CAST (self), self->conv);
436 gst_element_set_state (self->scale, GST_STATE_NULL);
437 gst_bin_remove (GST_BIN_CAST (self), self->scale);
440 if (!self->identity) {
441 gst_play_sink_video_convert_add_identity (self);
443 gst_play_sink_video_convert_set_targets (self, self->identity,
446 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
448 case GST_STATE_CHANGE_READY_TO_PAUSED:
449 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
450 if (!gst_pad_is_blocked (self->sink_proxypad))
451 gst_pad_set_blocked_async_full (self->sink_proxypad, TRUE,
452 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
453 (GDestroyNotify) gst_object_unref);
454 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
456 case GST_STATE_CHANGE_READY_TO_NULL:
457 if (self->identity) {
458 gst_element_set_state (self->identity, GST_STATE_NULL);
459 gst_bin_remove (GST_BIN_CAST (self), self->identity);
460 self->identity = NULL;
471 gst_play_sink_video_convert_class_init (GstPlaySinkVideoConvertClass * klass)
473 GObjectClass *gobject_class;
474 GstElementClass *gstelement_class;
476 GST_DEBUG_CATEGORY_INIT (gst_play_sink_video_convert_debug,
477 "playsinkvideoconvert", 0, "play bin");
479 gobject_class = (GObjectClass *) klass;
480 gstelement_class = (GstElementClass *) klass;
482 gobject_class->finalize = gst_play_sink_video_convert_finalize;
484 gst_element_class_add_pad_template (gstelement_class,
485 gst_static_pad_template_get (&srctemplate));
486 gst_element_class_add_pad_template (gstelement_class,
487 gst_static_pad_template_get (&sinktemplate));
488 gst_element_class_set_details_simple (gstelement_class,
489 "Player Sink Video Converter", "Video/Bin/Converter",
490 "Convenience bin for video conversion",
491 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
493 gstelement_class->change_state =
494 GST_DEBUG_FUNCPTR (gst_play_sink_video_convert_change_state);
498 gst_play_sink_video_convert_init (GstPlaySinkVideoConvert * self)
500 GstPadTemplate *templ;
502 self->lock = g_mutex_new ();
503 gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
505 templ = gst_static_pad_template_get (&sinktemplate);
506 self->sinkpad = gst_ghost_pad_new_no_target_from_template ("sink", templ);
507 gst_pad_set_event_function (self->sinkpad,
508 GST_DEBUG_FUNCPTR (gst_play_sink_video_convert_sink_event));
509 gst_pad_set_setcaps_function (self->sinkpad,
510 GST_DEBUG_FUNCPTR (gst_play_sink_video_convert_sink_setcaps));
511 gst_pad_set_getcaps_function (self->sinkpad,
512 GST_DEBUG_FUNCPTR (gst_play_sink_video_convert_getcaps));
514 self->sink_proxypad =
515 GST_PAD_CAST (gst_proxy_pad_get_internal (GST_PROXY_PAD (self->sinkpad)));
517 gst_element_add_pad (GST_ELEMENT_CAST (self), self->sinkpad);
518 gst_object_unref (templ);
520 templ = gst_static_pad_template_get (&srctemplate);
521 self->srcpad = gst_ghost_pad_new_no_target_from_template ("src", templ);
522 gst_pad_set_getcaps_function (self->srcpad,
523 GST_DEBUG_FUNCPTR (gst_play_sink_video_convert_getcaps));
524 gst_element_add_pad (GST_ELEMENT_CAST (self), self->srcpad);
525 gst_object_unref (templ);
527 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
528 self->sink_proxypad);