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_push_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_push_event (pad, event);
94 gst_object_unref (pad);
98 pad_blocked_cb (GstPad * pad, gboolean blocked, GstPlaySinkVideoConvert * self)
104 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
105 self->sink_proxypad_blocked = blocked;
106 GST_DEBUG_OBJECT (self, "Pad blocked: %d", blocked);
110 /* There must be a peer at this point */
111 peer = gst_pad_get_peer (self->sinkpad);
112 caps = gst_pad_get_negotiated_caps (peer);
114 caps = gst_pad_get_caps_reffed (peer);
115 gst_object_unref (peer);
117 raw = is_raw_caps (caps);
118 GST_DEBUG_OBJECT (self, "Caps %" GST_PTR_FORMAT " are raw: %d", caps, raw);
119 gst_caps_unref (caps);
121 if (raw == self->raw)
126 GstBin *bin = GST_BIN_CAST (self);
127 GstElement *head = NULL, *prev = NULL;
130 GST_DEBUG_OBJECT (self, "Creating raw conversion pipeline");
132 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), NULL);
133 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
135 self->conv = gst_element_factory_make ("ffmpegcolorspace", "conv");
136 if (self->conv == NULL) {
137 post_missing_element_message (self, "ffmpegcolorspace");
138 GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN,
139 (_("Missing element '%s' - check your GStreamer installation."),
140 "ffmpegcolorspace"), ("video rendering might fail"));
142 gst_bin_add (bin, self->conv);
143 gst_element_sync_state_with_parent (self->conv);
144 distribute_running_time (self->conv, &self->segment);
145 prev = head = self->conv;
148 self->scale = gst_element_factory_make ("videoscale", "scale");
149 if (self->scale == NULL) {
150 post_missing_element_message (self, "videoscale");
151 GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN,
152 (_("Missing element '%s' - check your GStreamer installation."),
153 "videoscale"), ("possibly a liboil version mismatch?"));
155 /* Add black borders if necessary to keep the DAR */
156 g_object_set (self->scale, "add-borders", TRUE, NULL);
157 gst_bin_add (bin, self->scale);
158 gst_element_sync_state_with_parent (self->scale);
159 distribute_running_time (self->scale, &self->segment);
161 if (!gst_element_link_pads_full (prev, "src", self->scale, "sink",
162 GST_PAD_LINK_CHECK_TEMPLATE_CAPS))
171 pad = gst_element_get_static_pad (head, "sink");
172 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), pad);
173 gst_object_unref (pad);
177 pad = gst_element_get_static_pad (prev, "src");
178 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), pad);
179 gst_object_unref (pad);
182 if (!head && !prev) {
183 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
184 self->sink_proxypad);
187 GST_DEBUG_OBJECT (self, "Raw conversion pipeline created");
189 GstBin *bin = GST_BIN_CAST (self);
191 GST_DEBUG_OBJECT (self, "Removing raw conversion pipeline");
193 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), NULL);
194 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
197 gst_element_set_state (self->conv, GST_STATE_NULL);
198 gst_bin_remove (bin, self->conv);
202 gst_element_set_state (self->scale, GST_STATE_NULL);
203 gst_bin_remove (bin, self->scale);
207 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
208 self->sink_proxypad);
210 GST_DEBUG_OBJECT (self, "Raw conversion pipeline removed");
214 gst_pad_set_blocked_async_full (self->sink_proxypad, FALSE,
215 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
216 (GDestroyNotify) gst_object_unref);
219 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
224 GST_ELEMENT_ERROR (self, CORE, PAD,
225 (NULL), ("Failed to configure the video converter."));
226 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
227 self->sink_proxypad);
228 gst_pad_set_blocked_async_full (self->sink_proxypad, FALSE,
229 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
230 (GDestroyNotify) gst_object_unref);
232 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
238 gst_play_sink_video_convert_sink_event (GstPad * pad, GstEvent * event)
240 GstPlaySinkVideoConvert *self =
241 GST_PLAY_SINK_VIDEO_CONVERT (gst_pad_get_parent (pad));
244 ret = gst_proxy_pad_event_default (pad, gst_event_ref (event));
246 if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
248 gdouble rate, applied_rate;
250 gint64 start, stop, position;
252 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
253 gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
254 &format, &start, &stop, &position);
256 GST_DEBUG_OBJECT (self, "Segment before %" GST_SEGMENT_FORMAT,
258 gst_segment_set_newsegment_full (&self->segment, update, rate, applied_rate,
259 format, start, stop, position);
260 GST_DEBUG_OBJECT (self, "Segment after %" GST_SEGMENT_FORMAT,
262 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
263 } else if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_STOP) {
264 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
265 GST_DEBUG_OBJECT (self, "Resetting segment");
266 gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
267 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
270 gst_event_unref (event);
271 gst_object_unref (self);
277 gst_play_sink_video_convert_sink_setcaps (GstPad * pad, GstCaps * caps)
279 GstPlaySinkVideoConvert *self =
280 GST_PLAY_SINK_VIDEO_CONVERT (gst_pad_get_parent (pad));
284 gboolean reconfigure = FALSE;
286 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
287 s = gst_caps_get_structure (caps, 0);
288 name = gst_structure_get_name (s);
290 if (g_str_has_prefix (name, "video/x-raw-")) {
291 if (!self->raw && !gst_pad_is_blocked (self->sink_proxypad)) {
292 GST_DEBUG_OBJECT (self, "Changing caps from non-raw to raw");
294 gst_pad_set_blocked_async_full (self->sink_proxypad, TRUE,
295 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
296 (GDestroyNotify) gst_object_unref);
299 if (self->raw && !gst_pad_is_blocked (self->sink_proxypad)) {
300 GST_DEBUG_OBJECT (self, "Changing caps from raw to non-raw");
302 gst_pad_set_blocked_async_full (self->sink_proxypad, TRUE,
303 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
304 (GDestroyNotify) gst_object_unref);
308 /* Otherwise the setcaps below fails */
310 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), NULL);
311 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
313 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
315 ret = gst_ghost_pad_setcaps_default (pad, caps);
317 GST_DEBUG_OBJECT (self, "Setting sink caps %" GST_PTR_FORMAT ": %d", caps,
320 gst_object_unref (self);
326 gst_play_sink_video_convert_getcaps (GstPad * pad)
328 GstPlaySinkVideoConvert *self =
329 GST_PLAY_SINK_VIDEO_CONVERT (gst_pad_get_parent (pad));
331 GstPad *otherpad, *peer;
333 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
334 if (pad == self->srcpad)
335 otherpad = gst_object_ref (self->sinkpad);
337 otherpad = gst_object_ref (self->srcpad);
338 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
340 peer = gst_pad_get_peer (otherpad);
342 ret = gst_pad_get_caps_reffed (peer);
343 gst_object_unref (peer);
345 ret = gst_caps_new_any ();
348 gst_object_unref (otherpad);
349 gst_object_unref (self);
355 gst_play_sink_video_convert_finalize (GObject * object)
357 GstPlaySinkVideoConvert *self = GST_PLAY_SINK_VIDEO_CONVERT_CAST (object);
359 gst_object_unref (self->sink_proxypad);
360 g_mutex_free (self->lock);
362 G_OBJECT_CLASS (parent_class)->finalize (object);
365 static GstStateChangeReturn
366 gst_play_sink_video_convert_change_state (GstElement * element,
367 GstStateChange transition)
369 GstStateChangeReturn ret;
370 GstPlaySinkVideoConvert *self = GST_PLAY_SINK_VIDEO_CONVERT_CAST (element);
372 switch (transition) {
373 case GST_STATE_CHANGE_PAUSED_TO_READY:
374 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
375 if (gst_pad_is_blocked (self->sink_proxypad))
376 gst_pad_set_blocked_async_full (self->sink_proxypad, FALSE,
377 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
378 (GDestroyNotify) gst_object_unref);
379 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
385 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
386 if (ret == GST_STATE_CHANGE_FAILURE)
389 switch (transition) {
390 case GST_STATE_CHANGE_PAUSED_TO_READY:
391 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
392 gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
394 gst_element_set_state (self->conv, GST_STATE_NULL);
395 gst_bin_remove (GST_BIN_CAST (self), self->conv);
399 gst_element_set_state (self->scale, GST_STATE_NULL);
400 gst_bin_remove (GST_BIN_CAST (self), self->scale);
403 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
404 self->sink_proxypad);
406 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
408 case GST_STATE_CHANGE_READY_TO_PAUSED:
409 GST_PLAY_SINK_VIDEO_CONVERT_LOCK (self);
410 if (!gst_pad_is_blocked (self->sink_proxypad))
411 gst_pad_set_blocked_async_full (self->sink_proxypad, TRUE,
412 (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
413 (GDestroyNotify) gst_object_unref);
414 GST_PLAY_SINK_VIDEO_CONVERT_UNLOCK (self);
423 gst_play_sink_video_convert_class_init (GstPlaySinkVideoConvertClass * klass)
425 GObjectClass *gobject_class;
426 GstElementClass *gstelement_class;
428 GST_DEBUG_CATEGORY_INIT (gst_play_sink_video_convert_debug,
429 "playsinkvideoconvert", 0, "play bin");
431 gobject_class = (GObjectClass *) klass;
432 gstelement_class = (GstElementClass *) klass;
434 gobject_class->finalize = gst_play_sink_video_convert_finalize;
436 gst_element_class_add_pad_template (gstelement_class,
437 gst_static_pad_template_get (&srctemplate));
438 gst_element_class_add_pad_template (gstelement_class,
439 gst_static_pad_template_get (&sinktemplate));
440 gst_element_class_set_details_simple (gstelement_class,
441 "Player Sink Video Converter", "Video/Bin/Converter",
442 "Convenience bin for video conversion",
443 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
445 gstelement_class->change_state =
446 GST_DEBUG_FUNCPTR (gst_play_sink_video_convert_change_state);
450 gst_play_sink_video_convert_init (GstPlaySinkVideoConvert * self)
452 GstPadTemplate *templ;
454 self->lock = g_mutex_new ();
455 gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
457 templ = gst_static_pad_template_get (&sinktemplate);
458 self->sinkpad = gst_ghost_pad_new_no_target_from_template ("sink", templ);
459 gst_pad_set_event_function (self->sinkpad,
460 GST_DEBUG_FUNCPTR (gst_play_sink_video_convert_sink_event));
461 gst_pad_set_setcaps_function (self->sinkpad,
462 GST_DEBUG_FUNCPTR (gst_play_sink_video_convert_sink_setcaps));
463 gst_pad_set_getcaps_function (self->sinkpad,
464 GST_DEBUG_FUNCPTR (gst_play_sink_video_convert_getcaps));
466 self->sink_proxypad =
467 GST_PAD_CAST (gst_proxy_pad_get_internal (GST_PROXY_PAD (self->sinkpad)));
469 gst_element_add_pad (GST_ELEMENT_CAST (self), self->sinkpad);
470 gst_object_unref (templ);
472 templ = gst_static_pad_template_get (&srctemplate);
473 self->srcpad = gst_ghost_pad_new_no_target_from_template ("src", templ);
474 gst_pad_set_getcaps_function (self->srcpad,
475 GST_DEBUG_FUNCPTR (gst_play_sink_video_convert_getcaps));
476 gst_element_add_pad (GST_ELEMENT_CAST (self), self->srcpad);
477 gst_object_unref (templ);
479 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
480 self->sink_proxypad);