3 * BlueZ - Bluetooth protocol stack for Linux
5 * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
30 #include "gstbluezelements.h"
31 #include "gsta2dpsink.h"
33 #include <gst/rtp/gstrtpbasepayload.h>
35 GST_DEBUG_CATEGORY_STATIC (gst_a2dp_sink_debug);
36 #define GST_CAT_DEFAULT gst_a2dp_sink_debug
38 #define A2DP_SBC_RTP_PAYLOAD_TYPE 1
40 #define DEFAULT_AUTOCONNECT TRUE
50 #define parent_class gst_a2dp_sink_parent_class
51 G_DEFINE_TYPE (GstA2dpSink, gst_a2dp_sink, GST_TYPE_BIN);
52 GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (a2dpsink, "a2dpsink", GST_RANK_NONE,
53 GST_TYPE_A2DP_SINK, bluez_element_init (plugin));
55 static GstStaticPadTemplate gst_a2dp_sink_factory =
56 GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
57 GST_STATIC_CAPS ("audio/x-sbc, "
58 "rate = (int) { 16000, 32000, 44100, 48000 }, "
59 "channels = (int) [ 1, 2 ], "
60 "channel-mode = (string) { mono, dual, stereo, joint }, "
61 "blocks = (int) { 4, 8, 12, 16 }, "
62 "subbands = (int) { 4, 8 }, "
63 "allocation-method = (string) { snr, loudness }, "
64 "bitpool = (int) [ 2, " TEMPLATE_MAX_BITPOOL_STR " ]; "
65 "audio/mpeg; " "audio/x-ldac"));
67 static gboolean gst_a2dp_sink_handle_event (GstPad * pad,
68 GstObject * pad_parent, GstEvent * event);
69 static gboolean gst_a2dp_sink_query (GstPad * pad, GstObject * parent,
71 static GstCaps *gst_a2dp_sink_get_caps (GstA2dpSink * self);
74 * Helper function to create elements, add to the bin and link it
78 gst_a2dp_sink_init_element (GstA2dpSink * self, const gchar * elementname,
84 GST_LOG_OBJECT (self, "Initializing %s", elementname);
86 element = gst_element_factory_make (elementname, name);
87 if (element == NULL) {
88 GST_DEBUG_OBJECT (self, "Couldn't create %s", elementname);
92 if (!gst_bin_add (GST_BIN (self), element)) {
93 GST_DEBUG_OBJECT (self, "failed to add %s to the bin", elementname);
94 goto cleanup_and_fail;
97 sinkpad = gst_element_get_static_pad (element, "sink");
98 if (!gst_ghost_pad_set_target (GST_GHOST_PAD (self->ghostpad), sinkpad)) {
99 GST_ERROR_OBJECT (self, "Failed to set target for ghost pad");
100 goto remove_element_and_fail;
102 gst_object_unref (sinkpad);
104 if (!gst_element_sync_state_with_parent (element)) {
105 GST_DEBUG_OBJECT (self, "%s failed to go to playing", elementname);
106 goto remove_element_and_fail;
111 remove_element_and_fail:
112 gst_object_unref (sinkpad);
113 gst_element_set_state (element, GST_STATE_NULL);
114 gst_bin_remove (GST_BIN (self), element);
118 g_object_unref (G_OBJECT (element));
124 gst_a2dp_sink_set_property (GObject * object, guint prop_id,
125 const GValue * value, GParamSpec * pspec)
127 GstA2dpSink *self = GST_A2DP_SINK (object);
131 if (self->sink != NULL)
132 gst_avdtp_sink_set_device (self->sink, g_value_get_string (value));
134 g_free (self->device);
135 self->device = g_value_dup_string (value);
139 if (self->sink != NULL)
140 gst_avdtp_sink_set_transport (self->sink, g_value_get_string (value));
142 g_free (self->transport);
143 self->transport = g_value_dup_string (value);
146 case PROP_AUTOCONNECT:
147 self->autoconnect = g_value_get_boolean (value);
149 if (self->sink != NULL)
150 g_object_set (G_OBJECT (self->sink), "auto-connect",
151 self->autoconnect, NULL);
155 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
161 gst_a2dp_sink_get_property (GObject * object, guint prop_id,
162 GValue * value, GParamSpec * pspec)
164 GstA2dpSink *self = GST_A2DP_SINK (object);
165 gchar *device, *transport;
169 if (self->sink != NULL) {
170 device = gst_avdtp_sink_get_device (self->sink);
172 g_value_take_string (value, device);
175 case PROP_AUTOCONNECT:
176 if (self->sink != NULL)
177 g_object_get (G_OBJECT (self->sink), "auto-connect",
178 &self->autoconnect, NULL);
180 g_value_set_boolean (value, self->autoconnect);
183 if (self->sink != NULL) {
184 transport = gst_avdtp_sink_get_transport (self->sink);
185 if (transport != NULL)
186 g_value_take_string (value, transport);
190 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
196 gst_a2dp_sink_init_ghost_pad (GstA2dpSink * self)
198 GstPadTemplate *templ;
200 /* now we add a ghostpad */
201 templ = gst_static_pad_template_get (&gst_a2dp_sink_factory);
202 self->ghostpad = gst_ghost_pad_new_no_target_from_template ("sink", templ);
203 g_object_unref (templ);
205 /* the getcaps of our ghostpad must reflect the device caps */
206 gst_pad_set_query_function (self->ghostpad, gst_a2dp_sink_query);
208 gst_pad_set_event_function (self->ghostpad, gst_a2dp_sink_handle_event);
210 if (!gst_element_add_pad (GST_ELEMENT (self), self->ghostpad))
211 GST_ERROR_OBJECT (self, "failed to add ghostpad");
217 gst_a2dp_sink_remove_dynamic_elements (GstA2dpSink * self)
220 GST_LOG_OBJECT (self, "removing rtp element from the bin");
221 if (!gst_bin_remove (GST_BIN (self), GST_ELEMENT (self->rtp)))
222 GST_WARNING_OBJECT (self, "failed to remove rtp " "element from bin");
228 static GstStateChangeReturn
229 gst_a2dp_sink_change_state (GstElement * element, GstStateChange transition)
231 GstStateChangeReturn ret;
232 GstA2dpSink *self = GST_A2DP_SINK (element);
234 switch (transition) {
235 case GST_STATE_CHANGE_READY_TO_PAUSED:
236 self->taglist = gst_tag_list_new_empty ();
239 case GST_STATE_CHANGE_NULL_TO_READY:
240 if (self->device != NULL)
241 gst_avdtp_sink_set_device (self->sink, self->device);
243 if (self->transport != NULL)
244 gst_avdtp_sink_set_transport (self->sink, self->transport);
246 g_object_set (G_OBJECT (self->sink), "auto-connect",
247 self->autoconnect, NULL);
255 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
257 switch (transition) {
258 case GST_STATE_CHANGE_PAUSED_TO_READY:
260 gst_tag_list_unref (self->taglist);
261 self->taglist = NULL;
265 case GST_STATE_CHANGE_READY_TO_NULL:
266 gst_a2dp_sink_remove_dynamic_elements (self);
277 gst_a2dp_sink_class_init (GstA2dpSinkClass * klass)
279 GObjectClass *object_class = G_OBJECT_CLASS (klass);
280 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
282 parent_class = g_type_class_peek_parent (klass);
284 object_class->set_property = GST_DEBUG_FUNCPTR (gst_a2dp_sink_set_property);
285 object_class->get_property = GST_DEBUG_FUNCPTR (gst_a2dp_sink_get_property);
287 element_class->change_state = GST_DEBUG_FUNCPTR (gst_a2dp_sink_change_state);
289 g_object_class_install_property (object_class, PROP_DEVICE,
290 g_param_spec_string ("device", "Device",
291 "Bluetooth remote device address", NULL, G_PARAM_READWRITE));
293 g_object_class_install_property (object_class, PROP_AUTOCONNECT,
294 g_param_spec_boolean ("auto-connect", "Auto-connect",
295 "Automatically attempt to connect to device",
296 DEFAULT_AUTOCONNECT, G_PARAM_READWRITE));
298 g_object_class_install_property (object_class, PROP_TRANSPORT,
299 g_param_spec_string ("transport", "Transport",
300 "Use configured transport", NULL, G_PARAM_READWRITE));
302 gst_element_class_set_static_metadata (element_class, "Bluetooth A2DP sink",
303 "Sink/Audio", "Plays audio to an A2DP device",
304 "Marcel Holtmann <marcel@holtmann.org>");
306 GST_DEBUG_CATEGORY_INIT (gst_a2dp_sink_debug, "a2dpsink", 0,
307 "A2DP sink element");
309 gst_element_class_add_static_pad_template (element_class,
310 &gst_a2dp_sink_factory);
314 gst_a2dp_sink_get_device_caps (GstA2dpSink * self)
316 return gst_avdtp_sink_get_device_caps (self->sink);
320 gst_a2dp_sink_get_caps (GstA2dpSink * self)
322 GstCaps *caps = NULL;
324 if (self->sink != NULL) {
325 caps = gst_a2dp_sink_get_device_caps (self);
326 GST_LOG_OBJECT (self, "Got device caps %" GST_PTR_FORMAT, caps);
330 caps = gst_static_pad_template_get_caps (&gst_a2dp_sink_factory);
336 gst_a2dp_sink_init_avdtp_sink (GstA2dpSink * self)
340 if (self->sink == NULL)
341 sink = gst_element_factory_make ("avdtpsink", "avdtpsink");
343 sink = GST_ELEMENT (self->sink);
346 GST_ERROR_OBJECT (self, "Couldn't create avdtpsink");
350 if (!gst_bin_add (GST_BIN (self), sink)) {
351 GST_ERROR_OBJECT (self, "failed to add avdtpsink " "to the bin");
352 goto cleanup_and_fail;
355 self->sink = GST_AVDTP_SINK (sink);
356 g_object_set (G_OBJECT (self->sink), "device", self->device, NULL);
357 g_object_set (G_OBJECT (self->sink), "transport", self->transport, NULL);
359 gst_element_sync_state_with_parent (sink);
365 g_object_unref (G_OBJECT (sink));
371 gst_a2dp_sink_init_rtp_sbc_element (GstA2dpSink * self)
375 /* if we already have a rtp, we don't need a new one */
376 if (self->rtp != NULL)
379 rtppay = gst_a2dp_sink_init_element (self, "rtpsbcpay", "rtp");
384 g_object_set (self->rtp, "min-frames", -1, NULL);
386 gst_element_set_state (rtppay, GST_STATE_PAUSED);
392 gst_a2dp_sink_init_rtp_mpeg_element (GstA2dpSink * self)
396 /* check if we don't need a new rtp */
400 GST_LOG_OBJECT (self, "Initializing rtp mpeg element");
402 rtppay = gst_a2dp_sink_init_element (self, "rtpmpapay", "rtp");
408 gst_element_set_state (rtppay, GST_STATE_PAUSED);
414 gst_a2dp_sink_init_rtp_ldac_element (GstA2dpSink * self)
418 /* check if we don't need a new rtp */
422 GST_LOG_OBJECT (self, "Initializing rtp ldac element");
424 rtppay = gst_a2dp_sink_init_element (self, "rtpldacpay", "rtp");
430 gst_element_set_state (rtppay, GST_STATE_PAUSED);
436 gst_a2dp_sink_init_dynamic_elements (GstA2dpSink * self, GstCaps * caps)
438 GstStructure *structure;
444 structure = gst_caps_get_structure (caps, 0);
446 /* first, we need to create our rtp payloader */
447 if (gst_structure_has_name (structure, "audio/x-sbc")) {
448 GST_LOG_OBJECT (self, "sbc media received");
449 if (!gst_a2dp_sink_init_rtp_sbc_element (self))
451 } else if (gst_structure_has_name (structure, "audio/mpeg")) {
452 GST_LOG_OBJECT (self, "mp3 media received");
453 if (!gst_a2dp_sink_init_rtp_mpeg_element (self))
455 } else if (gst_structure_has_name (structure, "audio/x-ldac")) {
456 GST_LOG_OBJECT (self, "ldac media received");
457 if (!gst_a2dp_sink_init_rtp_ldac_element (self))
460 GST_ERROR_OBJECT (self, "Unexpected media type");
464 if (!gst_element_link (GST_ELEMENT (self->rtp), GST_ELEMENT (self->sink))) {
465 GST_ERROR_OBJECT (self, "couldn't link rtp payloader to avdtpsink");
469 /* check if we should push the taglist FIXME should we push this?
470 * we can send the tags directly if needed */
471 if (self->taglist != NULL && gst_structure_has_name (structure, "audio/mpeg")) {
473 event = gst_event_new_tag (self->taglist);
475 /* send directly the crc */
476 if (gst_tag_list_get_boolean (self->taglist, "has-crc", &crc))
477 gst_avdtp_sink_set_crc (self->sink, crc);
479 if (gst_tag_list_get_string (self->taglist, "channel-mode", &mode))
480 gst_avdtp_sink_set_channel_mode (self->sink, mode);
482 gst_pad_send_event (self->ghostpad, event);
484 self->taglist = NULL;
488 mtu = gst_avdtp_sink_get_link_mtu (self->sink);
489 GST_INFO_OBJECT (self, "Setting MTU to %u", mtu);
490 g_object_set (self->rtp, "mtu", mtu, NULL);
496 gst_a2dp_sink_handle_event (GstPad * pad, GstObject * pad_parent,
500 GstTagList *taglist = NULL;
502 self = GST_A2DP_SINK (pad_parent);
504 if (GST_EVENT_TYPE (event) == GST_EVENT_TAG) {
505 if (self->taglist == NULL)
506 gst_event_parse_tag (event, &self->taglist);
508 gst_event_parse_tag (event, &taglist);
509 gst_tag_list_insert (self->taglist, taglist, GST_TAG_MERGE_REPLACE);
511 } else if (GST_EVENT_TYPE (event) == GST_EVENT_CAPS) {
512 GstCaps *caps = NULL;
514 gst_event_parse_caps (event, &caps);
515 gst_a2dp_sink_init_dynamic_elements (self, caps);
518 return gst_pad_event_default (pad, pad_parent, event);
522 gst_a2dp_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
524 GstA2dpSink *sink = GST_A2DP_SINK (parent);
527 if (GST_QUERY_TYPE (query) == GST_QUERY_CAPS) {
530 caps = gst_a2dp_sink_get_caps (sink);
531 gst_query_set_caps_result (query, caps);
532 gst_caps_unref (caps);
535 ret = gst_pad_query_default (pad, parent, query);
542 gst_a2dp_sink_init (GstA2dpSink * self)
547 self->transport = NULL;
548 self->autoconnect = DEFAULT_AUTOCONNECT;
549 self->taglist = NULL;
550 self->ghostpad = NULL;
552 gst_a2dp_sink_init_ghost_pad (self);
554 gst_a2dp_sink_init_avdtp_sink (self);