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 "gstplaysinkaudioconvert.h"
26 #include <gst/pbutils/pbutils.h>
27 #include <gst/gst-i18n-plugin.h>
29 GST_DEBUG_CATEGORY_STATIC (gst_play_sink_audio_convert_debug);
30 #define GST_CAT_DEFAULT gst_play_sink_audio_convert_debug
32 #define parent_class gst_play_sink_audio_convert_parent_class
34 G_DEFINE_TYPE (GstPlaySinkAudioConvert, gst_play_sink_audio_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, "audio/x-raw"))
66 post_missing_element_message (GstPlaySinkAudioConvert * self,
71 msg = gst_missing_element_message_new (GST_ELEMENT_CAST (self), name);
72 gst_element_post_message (GST_ELEMENT_CAST (self), msg);
76 pad_blocked_cb (GstPad * pad, GstProbeType type, gpointer type_data,
79 GstPlaySinkAudioConvert *self = user_data;
84 GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
85 GST_DEBUG_OBJECT (self, "Pad blocked");
87 /* There must be a peer at this point */
88 peer = gst_pad_get_peer (self->sinkpad);
89 caps = gst_pad_get_negotiated_caps (peer);
91 caps = gst_pad_get_caps (peer, NULL);
92 gst_object_unref (peer);
94 raw = is_raw_caps (caps);
95 GST_DEBUG_OBJECT (self, "Caps %" GST_PTR_FORMAT " are raw: %d", caps, raw);
96 gst_caps_unref (caps);
103 GstBin *bin = GST_BIN_CAST (self);
104 GstElement *head = NULL, *prev = NULL;
107 GST_DEBUG_OBJECT (self, "Creating raw conversion pipeline");
109 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), NULL);
110 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
112 if (self->use_converters) {
113 self->conv = gst_element_factory_make ("audioconvert", "conv");
114 if (self->conv == NULL) {
115 post_missing_element_message (self, "audioconvert");
116 GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN,
117 (_("Missing element '%s' - check your GStreamer installation."),
118 "audioconvert"), ("audio rendering might fail"));
120 gst_bin_add (bin, self->conv);
121 gst_element_sync_state_with_parent (self->conv);
122 prev = head = self->conv;
125 self->resample = gst_element_factory_make ("audioresample", "resample");
126 if (self->resample == NULL) {
127 post_missing_element_message (self, "audioresample");
128 GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN,
129 (_("Missing element '%s' - check your GStreamer installation."),
130 "audioresample"), ("possibly a liboil version mismatch?"));
132 gst_bin_add (bin, self->resample);
133 gst_element_sync_state_with_parent (self->resample);
135 if (!gst_element_link_pads_full (prev, "src", self->resample, "sink",
136 GST_PAD_LINK_CHECK_TEMPLATE_CAPS))
139 head = self->resample;
141 prev = self->resample;
145 if (self->use_volume && self->volume) {
146 gst_bin_add (bin, gst_object_ref (self->volume));
147 gst_element_sync_state_with_parent (self->volume);
149 if (!gst_element_link_pads_full (prev, "src", self->volume, "sink",
150 GST_PAD_LINK_CHECK_TEMPLATE_CAPS))
159 pad = gst_element_get_static_pad (head, "sink");
160 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), pad);
161 gst_object_unref (pad);
165 pad = gst_element_get_static_pad (prev, "src");
166 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), pad);
167 gst_object_unref (pad);
170 if (!head && !prev) {
171 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
172 self->sink_proxypad);
175 GST_DEBUG_OBJECT (self, "Raw conversion pipeline created");
177 GstBin *bin = GST_BIN_CAST (self);
179 GST_DEBUG_OBJECT (self, "Removing raw conversion pipeline");
181 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), NULL);
182 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
185 gst_element_set_state (self->conv, GST_STATE_NULL);
186 gst_bin_remove (bin, self->conv);
189 if (self->resample) {
190 gst_element_set_state (self->resample, GST_STATE_NULL);
191 gst_bin_remove (bin, self->resample);
192 self->resample = NULL;
195 gst_element_set_state (self->volume, GST_STATE_NULL);
196 if (GST_OBJECT_PARENT (self->volume) == GST_OBJECT_CAST (self)) {
197 gst_bin_remove (GST_BIN_CAST (self), self->volume);
201 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
202 self->sink_proxypad);
204 GST_DEBUG_OBJECT (self, "Raw conversion pipeline removed");
208 self->sink_proxypad_block_id = 0;
209 GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
211 return GST_PROBE_REMOVE;
215 GST_ELEMENT_ERROR (self, CORE, PAD,
216 (NULL), ("Failed to configure the audio converter."));
217 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
218 self->sink_proxypad);
219 self->sink_proxypad_block_id = 0;
220 GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
222 return GST_PROBE_REMOVE;
227 block_proxypad (GstPlaySinkAudioConvert * self)
229 if (self->sink_proxypad_block_id == 0) {
230 self->sink_proxypad_block_id =
231 gst_pad_add_probe (self->sink_proxypad, GST_PROBE_TYPE_BLOCK,
232 pad_blocked_cb, gst_object_ref (self),
233 (GDestroyNotify) gst_object_unref);
238 unblock_proxypad (GstPlaySinkAudioConvert * self)
240 if (self->sink_proxypad_block_id != 0) {
241 gst_pad_remove_probe (self->sink_proxypad, self->sink_proxypad_block_id);
242 self->sink_proxypad_block_id = 0;
247 gst_play_sink_audio_convert_sink_setcaps (GstPlaySinkAudioConvert * self,
252 gboolean reconfigure = FALSE;
254 GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
255 s = gst_caps_get_structure (caps, 0);
256 name = gst_structure_get_name (s);
258 if (g_str_has_prefix (name, "audio/x-raw")) {
259 if (!self->raw && !gst_pad_is_blocked (self->sink_proxypad)) {
260 GST_DEBUG_OBJECT (self, "Changing caps from non-raw to raw");
262 block_proxypad (self);
265 if (self->raw && !gst_pad_is_blocked (self->sink_proxypad)) {
266 GST_DEBUG_OBJECT (self, "Changing caps from raw to non-raw");
268 block_proxypad (self);
272 /* Otherwise the setcaps below fails */
274 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), NULL);
275 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
278 GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
280 GST_DEBUG_OBJECT (self, "Setting sink caps %" GST_PTR_FORMAT, caps);
286 gst_play_sink_audio_convert_sink_event (GstPad * pad, GstEvent * event)
288 GstPlaySinkAudioConvert *self =
289 GST_PLAY_SINK_AUDIO_CONVERT (gst_pad_get_parent (pad));
292 switch (GST_EVENT_TYPE (event)) {
297 gst_event_parse_caps (event, &caps);
298 ret = gst_play_sink_audio_convert_sink_setcaps (self, caps);
305 ret = gst_proxy_pad_event_default (pad, gst_event_ref (event));
307 switch (GST_EVENT_TYPE (event)) {
308 case GST_EVENT_SEGMENT:
309 GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
310 GST_DEBUG_OBJECT (self, "Segment before %" GST_SEGMENT_FORMAT,
312 gst_event_copy_segment (event, &self->segment);
313 GST_DEBUG_OBJECT (self, "Segment after %" GST_SEGMENT_FORMAT,
315 GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
317 case GST_EVENT_FLUSH_STOP:
318 GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
319 GST_DEBUG_OBJECT (self, "Resetting segment");
320 gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
321 GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
327 gst_event_unref (event);
328 gst_object_unref (self);
334 gst_play_sink_audio_convert_getcaps (GstPad * pad, GstCaps * filter)
336 GstPlaySinkAudioConvert *self =
337 GST_PLAY_SINK_AUDIO_CONVERT (gst_pad_get_parent (pad));
339 GstPad *otherpad, *peer;
341 GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
342 if (pad == self->srcpad)
343 otherpad = gst_object_ref (self->sinkpad);
345 otherpad = gst_object_ref (self->srcpad);
346 GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
348 peer = gst_pad_get_peer (otherpad);
350 ret = gst_pad_get_caps (peer, filter);
351 gst_object_unref (peer);
353 ret = (filter ? gst_caps_ref (filter) : gst_caps_new_any ());
356 gst_object_unref (otherpad);
357 gst_object_unref (self);
363 gst_play_sink_audio_convert_finalize (GObject * object)
365 GstPlaySinkAudioConvert *self = GST_PLAY_SINK_AUDIO_CONVERT_CAST (object);
368 gst_object_unref (self->volume);
370 gst_object_unref (self->sink_proxypad);
371 g_mutex_free (self->lock);
373 G_OBJECT_CLASS (parent_class)->finalize (object);
376 static GstStateChangeReturn
377 gst_play_sink_audio_convert_change_state (GstElement * element,
378 GstStateChange transition)
380 GstStateChangeReturn ret;
381 GstPlaySinkAudioConvert *self = GST_PLAY_SINK_AUDIO_CONVERT_CAST (element);
383 switch (transition) {
384 case GST_STATE_CHANGE_PAUSED_TO_READY:
385 GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
386 unblock_proxypad (self);
387 GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
393 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
394 if (ret == GST_STATE_CHANGE_FAILURE)
397 switch (transition) {
398 case GST_STATE_CHANGE_PAUSED_TO_READY:
399 GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
400 gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
402 gst_element_set_state (self->conv, GST_STATE_NULL);
403 gst_bin_remove (GST_BIN_CAST (self), self->conv);
406 if (self->resample) {
407 gst_element_set_state (self->resample, GST_STATE_NULL);
408 gst_bin_remove (GST_BIN_CAST (self), self->resample);
409 self->resample = NULL;
412 gst_element_set_state (self->volume, GST_STATE_NULL);
413 if (GST_OBJECT_PARENT (self->volume) == GST_OBJECT_CAST (self)) {
414 gst_bin_remove (GST_BIN_CAST (self), self->volume);
417 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
418 self->sink_proxypad);
420 GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
422 case GST_STATE_CHANGE_READY_TO_PAUSED:
423 GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
424 unblock_proxypad (self);
425 GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
434 gst_play_sink_audio_convert_class_init (GstPlaySinkAudioConvertClass * klass)
436 GObjectClass *gobject_class;
437 GstElementClass *gstelement_class;
439 GST_DEBUG_CATEGORY_INIT (gst_play_sink_audio_convert_debug,
440 "playsinkaudioconvert", 0, "play bin");
442 gobject_class = (GObjectClass *) klass;
443 gstelement_class = (GstElementClass *) klass;
445 gobject_class->finalize = gst_play_sink_audio_convert_finalize;
447 gst_element_class_add_pad_template (gstelement_class,
448 gst_static_pad_template_get (&srctemplate));
449 gst_element_class_add_pad_template (gstelement_class,
450 gst_static_pad_template_get (&sinktemplate));
451 gst_element_class_set_details_simple (gstelement_class,
452 "Player Sink Audio Converter", "Audio/Bin/Converter",
453 "Convenience bin for audio conversion",
454 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
456 gstelement_class->change_state =
457 GST_DEBUG_FUNCPTR (gst_play_sink_audio_convert_change_state);
461 gst_play_sink_audio_convert_init (GstPlaySinkAudioConvert * self)
463 GstPadTemplate *templ;
465 self->lock = g_mutex_new ();
466 gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
468 templ = gst_static_pad_template_get (&sinktemplate);
469 self->sinkpad = gst_ghost_pad_new_no_target_from_template ("sink", templ);
470 gst_pad_set_event_function (self->sinkpad,
471 GST_DEBUG_FUNCPTR (gst_play_sink_audio_convert_sink_event));
472 gst_pad_set_getcaps_function (self->sinkpad,
473 GST_DEBUG_FUNCPTR (gst_play_sink_audio_convert_getcaps));
475 self->sink_proxypad =
476 GST_PAD_CAST (gst_proxy_pad_get_internal (GST_PROXY_PAD (self->sinkpad)));
478 gst_element_add_pad (GST_ELEMENT_CAST (self), self->sinkpad);
479 gst_object_unref (templ);
481 templ = gst_static_pad_template_get (&srctemplate);
482 self->srcpad = gst_ghost_pad_new_no_target_from_template ("src", templ);
483 gst_pad_set_getcaps_function (self->srcpad,
484 GST_DEBUG_FUNCPTR (gst_play_sink_audio_convert_getcaps));
485 gst_element_add_pad (GST_ELEMENT_CAST (self), self->srcpad);
486 gst_object_unref (templ);
488 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
489 self->sink_proxypad);
491 /* FIXME: Only create this on demand but for now we need
492 * it to always exist because of playsink's volume proxying
495 self->volume = gst_element_factory_make ("volume", "volume");
497 gst_object_ref_sink (self->volume);