2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wim.taymans@chello.be>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
26 #include <sys/ioctl.h>
27 #include <sys/soundcard.h>
31 #include "gstosssink.h"
33 /* elementfactory information */
34 static GstElementDetails gst_osssink_details = {
38 "Output to a sound card via OSS",
40 "Erik Walthinsen <omega@cse.ogi.edu>, "
41 "Wim Taymans <wim.taymans@chello.be>",
45 static void gst_osssink_class_init (GstOssSinkClass *klass);
46 static void gst_osssink_init (GstOssSink *osssink);
47 static void gst_osssink_dispose (GObject *object);
48 static void gst_osssink_finalize (GObject *object);
50 static GstElementStateReturn gst_osssink_change_state (GstElement *element);
51 static void gst_osssink_set_clock (GstElement *element, GstClock *clock);
52 static GstClock* gst_osssink_get_clock (GstElement *element);
53 static GstClockTime gst_osssink_get_time (GstClock *clock, gpointer data);
55 static const GstFormat* gst_osssink_get_formats (GstPad *pad);
56 static gboolean gst_osssink_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
57 GstFormat *dest_format, gint64 *dest_value);
58 static const GstQueryType* gst_osssink_get_query_types (GstPad *pad);
59 static gboolean gst_osssink_query (GstElement *element, GstQueryType type,
60 GstFormat *format, gint64 *value);
61 static gboolean gst_osssink_sink_query (GstPad *pad, GstQueryType type,
62 GstFormat *format, gint64 *value);
64 static GstPadLinkReturn gst_osssink_sinkconnect (GstPad *pad, GstCaps *caps);
66 static void gst_osssink_set_property (GObject *object, guint prop_id, const GValue *value,
68 static void gst_osssink_get_property (GObject *object, guint prop_id, GValue *value,
71 static void gst_osssink_chain (GstPad *pad,GstBuffer *buf);
73 /* OssSink signals and args */
90 GST_PAD_TEMPLATE_FACTORY (osssink_sink_factory,
97 "format", GST_PROPS_STRING ("int"), /* hack */
98 "law", GST_PROPS_INT (0),
99 "endianness", GST_PROPS_INT (G_BYTE_ORDER),
100 "signed", GST_PROPS_LIST (
101 GST_PROPS_BOOLEAN (FALSE),
102 GST_PROPS_BOOLEAN (TRUE)
104 "width", GST_PROPS_LIST (
108 "depth", GST_PROPS_LIST (
112 "rate", GST_PROPS_INT_RANGE (1000, 48000),
113 "channels", GST_PROPS_INT_RANGE (1, 2)
117 static GstElementClass *parent_class = NULL;
118 static guint gst_osssink_signals[LAST_SIGNAL] = { 0 };
121 gst_osssink_get_type (void)
123 static GType osssink_type = 0;
126 static const GTypeInfo osssink_info = {
127 sizeof(GstOssSinkClass),
130 (GClassInitFunc)gst_osssink_class_init,
135 (GInstanceInitFunc)gst_osssink_init,
137 osssink_type = g_type_register_static (GST_TYPE_ELEMENT, "GstOssSink", &osssink_info, 0);
143 static GstBufferPool*
144 gst_osssink_get_bufferpool (GstPad *pad)
148 oss = GST_OSSSINK (gst_pad_get_parent(pad));
150 /* 6 buffers per chunk by default */
152 oss->sinkpool = gst_buffer_pool_get_default (oss->bufsize, 6);
154 return oss->sinkpool;
158 gst_osssink_dispose (GObject *object)
160 GstOssSink *osssink = (GstOssSink *) object;
162 gst_object_unparent (GST_OBJECT (osssink->provided_clock));
164 G_OBJECT_CLASS (parent_class)->dispose (object);
168 gst_osssink_finalize (GObject *object)
170 GstOssSink *osssink = (GstOssSink *) object;
172 g_free (osssink->common.device);
174 G_OBJECT_CLASS (parent_class)->finalize (object);
178 gst_osssink_class_init (GstOssSinkClass *klass)
180 GObjectClass *gobject_class;
181 GstElementClass *gstelement_class;
183 gobject_class = (GObjectClass*)klass;
184 gstelement_class = (GstElementClass*)klass;
186 parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
188 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE,
189 g_param_spec_string ("device", "Device", "The device to use for output",
190 "/dev/dsp", G_PARAM_READWRITE)); /* CHECKME! */
191 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MUTE,
192 g_param_spec_boolean ("mute", "Mute", "Mute the audio",
193 TRUE, G_PARAM_READWRITE));
194 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SYNC,
195 g_param_spec_boolean ("sync", "Sync", "If syncing on timestamps should be enabled",
196 TRUE, G_PARAM_READWRITE));
197 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FRAGMENT,
198 g_param_spec_int ("fragment", "Fragment",
199 "The fragment as 0xMMMMSSSS (MMMM = total fragments, 2^SSSS = fragment size)",
200 0, G_MAXINT, 6, G_PARAM_READWRITE));
201 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BUFFER_SIZE,
202 g_param_spec_uint ("buffer_size", "Buffer size", "The buffer size",
203 0, G_MAXINT, 4096, G_PARAM_READWRITE));
204 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CHUNK_SIZE,
205 g_param_spec_uint ("chunk_size", "Chunk size", "Write data in chunk sized buffers",
206 0, G_MAXUINT, 4096, G_PARAM_READWRITE));
208 gst_osssink_signals[SIGNAL_HANDOFF] =
209 g_signal_new ("handoff", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
210 G_STRUCT_OFFSET (GstOssSinkClass, handoff), NULL, NULL,
211 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
213 gobject_class->set_property = gst_osssink_set_property;
214 gobject_class->get_property = gst_osssink_get_property;
215 gobject_class->dispose = gst_osssink_dispose;
216 gobject_class->finalize = gst_osssink_finalize;
218 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_osssink_change_state);
219 gstelement_class->query = GST_DEBUG_FUNCPTR (gst_osssink_query);
220 gstelement_class->set_clock = gst_osssink_set_clock;
221 gstelement_class->get_clock = gst_osssink_get_clock;
226 gst_osssink_init (GstOssSink *osssink)
228 osssink->sinkpad = gst_pad_new_from_template (
229 GST_PAD_TEMPLATE_GET (osssink_sink_factory), "sink");
230 gst_element_add_pad (GST_ELEMENT (osssink), osssink->sinkpad);
231 gst_pad_set_link_function (osssink->sinkpad, gst_osssink_sinkconnect);
232 gst_pad_set_bufferpool_function (osssink->sinkpad, gst_osssink_get_bufferpool);
233 gst_pad_set_convert_function (osssink->sinkpad, gst_osssink_convert);
234 gst_pad_set_query_function (osssink->sinkpad, gst_osssink_sink_query);
235 gst_pad_set_query_type_function (osssink->sinkpad, gst_osssink_get_query_types);
236 gst_pad_set_formats_function (osssink->sinkpad, gst_osssink_get_formats);
238 gst_pad_set_chain_function (osssink->sinkpad, gst_osssink_chain);
240 gst_osscommon_init (&osssink->common);
242 osssink->bufsize = 4096;
243 osssink->chunk_size = 4096;
244 osssink->resync = FALSE;
245 osssink->sync = TRUE;
246 osssink->sinkpool = NULL;
247 osssink->provided_clock = GST_CLOCK (gst_oss_clock_new ("ossclock", gst_osssink_get_time, osssink));
248 gst_object_set_parent (GST_OBJECT (osssink->provided_clock), GST_OBJECT (osssink));
249 osssink->handled = 0;
251 GST_FLAG_SET (osssink, GST_ELEMENT_THREAD_SUGGESTED);
252 GST_FLAG_SET (osssink, GST_ELEMENT_EVENT_AWARE);
256 static GstPadLinkReturn
257 gst_osssink_sinkconnect (GstPad *pad, GstCaps *caps)
259 GstOssSink *osssink = GST_OSSSINK (gst_pad_get_parent (pad));
261 if (!GST_CAPS_IS_FIXED (caps))
262 return GST_PAD_LINK_DELAYED;
264 if (!gst_osscommon_parse_caps (&osssink->common, caps))
265 return GST_PAD_LINK_REFUSED;
267 if (!gst_osscommon_sync_parms (&osssink->common)) {
268 return GST_PAD_LINK_REFUSED;
271 return GST_PAD_LINK_OK;
275 gst_osssink_get_delay (GstOssSink *osssink)
279 if (osssink->common.fd == -1)
282 if (ioctl (osssink->common.fd, SNDCTL_DSP_GETODELAY, &delay) < 0) {
284 if (ioctl (osssink->common.fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
288 delay = (info.fragstotal * info.fragsize) - info.bytes;
295 gst_osssink_get_time (GstClock *clock, gpointer data)
297 GstOssSink *osssink = GST_OSSSINK (data);
301 if (!osssink->common.bps)
304 delay = gst_osssink_get_delay (osssink);
306 /* sometimes delay is bigger than the number of bytes sent to the device,
307 * which screws up this calculation, we assume that everything is still
308 * in the device then */
309 if (((guint64)delay) > osssink->handled) {
310 delay = osssink->handled;
312 res = (osssink->handled - delay) * GST_SECOND / osssink->common.bps;
318 gst_osssink_get_clock (GstElement *element)
322 osssink = GST_OSSSINK (element);
324 return GST_CLOCK (osssink->provided_clock);
328 gst_osssink_set_clock (GstElement *element, GstClock *clock)
332 osssink = GST_OSSSINK (element);
334 osssink->clock = clock;
338 gst_osssink_chain (GstPad *pad, GstBuffer *buf)
341 GstClockTime buftime;
343 /* this has to be an audio buffer */
344 osssink = GST_OSSSINK (gst_pad_get_parent (pad));
346 if (GST_IS_EVENT (buf)) {
347 GstEvent *event = GST_EVENT (buf);
349 switch (GST_EVENT_TYPE (event)) {
351 ioctl (osssink->common.fd, SNDCTL_DSP_SYNC);
352 gst_oss_clock_set_active (osssink->provided_clock, FALSE);
353 gst_pad_event_default (pad, event);
355 case GST_EVENT_DISCONTINUOUS:
359 ioctl (osssink->common.fd, SNDCTL_DSP_RESET);
360 if (gst_event_discont_get_value (event, GST_FORMAT_TIME, &value)) {
361 if (!gst_clock_handle_discont (osssink->clock, value))
362 gst_oss_clock_set_active (osssink->provided_clock, FALSE);
363 osssink->handled = 0;
365 osssink->resync = TRUE;
369 gst_pad_event_default (pad, event);
372 gst_event_unref (event);
376 if (!osssink->common.bps) {
377 gst_buffer_unref (buf);
378 gst_element_error (GST_ELEMENT (osssink), "capsnego was never performed, unknown data type");
382 buftime = GST_BUFFER_TIMESTAMP (buf);
384 if (osssink->common.fd >= 0) {
385 if (!osssink->mute) {
386 guchar *data = GST_BUFFER_DATA (buf);
387 gint size = GST_BUFFER_SIZE (buf);
390 if (osssink->clock) {
393 GstClockTimeDiff jitter;
395 delay = gst_osssink_get_delay (osssink);
396 queued = delay * GST_SECOND / osssink->common.bps;
398 if (osssink->resync && osssink->sync) {
399 GstClockID id = gst_clock_new_single_shot_id (osssink->clock, buftime - queued);
401 gst_element_clock_wait (GST_ELEMENT (osssink), id, &jitter);
402 gst_clock_id_free (id);
405 gst_clock_handle_discont (osssink->clock, buftime - queued + jitter);
407 gst_oss_clock_set_active (osssink->provided_clock, TRUE);
408 osssink->resync = FALSE;
415 /* no clock, try to be as fast as possible */
417 audio_buf_info ospace;
419 ioctl (osssink->common.fd, SNDCTL_DSP_GETOSPACE, &ospace);
421 if (ospace.bytes >= size) {
426 while (to_write > 0) {
427 gint done = write (osssink->common.fd, data,
428 MIN (to_write, osssink->chunk_size));
437 osssink->handled += done;
442 gst_buffer_unref (buf);
445 static const GstFormat*
446 gst_osssink_get_formats (GstPad *pad)
448 static const GstFormat formats[] = {
458 gst_osssink_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
459 GstFormat *dest_format, gint64 *dest_value)
463 osssink = GST_OSSSINK (gst_pad_get_parent (pad));
465 return gst_osscommon_convert (&osssink->common, src_format, src_value,
466 dest_format, dest_value);
469 static const GstQueryType*
470 gst_osssink_get_query_types (GstPad *pad)
472 static const GstQueryType query_types[] = {
481 gst_osssink_sink_query (GstPad *pad, GstQueryType type, GstFormat *format, gint64 *value)
486 osssink = GST_OSSSINK (gst_pad_get_parent (pad));
489 case GST_QUERY_LATENCY:
490 if (!gst_osssink_convert (pad,
491 GST_FORMAT_BYTES, gst_osssink_get_delay (osssink),
497 case GST_QUERY_POSITION:
498 if (!gst_osssink_convert (pad,
499 GST_FORMAT_TIME, gst_clock_get_time (osssink->provided_clock),
506 res = gst_pad_query (gst_pad_get_peer (osssink->sinkpad), type, format, value);
514 gst_osssink_query (GstElement *element, GstQueryType type, GstFormat *format, gint64 *value)
516 GstOssSink *osssink = GST_OSSSINK (element);
518 return gst_osssink_sink_query (osssink->sinkpad, type, format, value);
522 gst_osssink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
526 osssink = GST_OSSSINK (object);
530 /* disallow changing the device while it is opened
531 get_property("device") should return the right one */
532 if (!GST_FLAG_IS_SET (osssink, GST_OSSSINK_OPEN))
534 g_free (osssink->common.device);
535 osssink->common.device = g_strdup (g_value_get_string (value));
536 g_object_notify (object, "device");
540 osssink->mute = g_value_get_boolean (value);
541 g_object_notify (G_OBJECT (osssink), "mute");
544 osssink->common.fragment = g_value_get_int (value);
545 gst_osscommon_sync_parms (&osssink->common);
547 case ARG_BUFFER_SIZE:
548 if (osssink->bufsize == g_value_get_int (value)) break;
549 osssink->bufsize = g_value_get_uint (value);
550 osssink->sinkpool = gst_buffer_pool_get_default (osssink->bufsize, 6);
551 g_object_notify (object, "buffer_size");
554 osssink->sync = g_value_get_boolean (value);
555 g_object_notify (G_OBJECT (osssink), "sync");
558 osssink->chunk_size = g_value_get_uint (value);
561 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
567 gst_osssink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
571 osssink = GST_OSSSINK (object);
575 g_value_set_string (value, osssink->common.device);
578 g_value_set_boolean (value, osssink->mute);
581 g_value_set_int (value, osssink->common.fragment);
583 case ARG_BUFFER_SIZE:
584 g_value_set_uint (value, osssink->bufsize);
587 g_value_set_boolean (value, osssink->sync);
590 g_value_set_uint (value, osssink->chunk_size);
593 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
598 static GstElementStateReturn
599 gst_osssink_change_state (GstElement *element)
603 osssink = GST_OSSSINK (element);
605 switch (GST_STATE_TRANSITION (element)) {
606 case GST_STATE_NULL_TO_READY:
607 if (!GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN)) {
610 if (!gst_osscommon_open_audio (&osssink->common, GST_OSSCOMMON_WRITE, &error)) {
611 gst_element_error (GST_ELEMENT (osssink), error);
613 return GST_STATE_FAILURE;
615 GST_FLAG_SET (element, GST_OSSSINK_OPEN);
618 case GST_STATE_READY_TO_PAUSED:
620 case GST_STATE_PAUSED_TO_PLAYING:
621 osssink->resync = TRUE;
623 case GST_STATE_PLAYING_TO_PAUSED:
625 if (GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN))
626 ioctl (osssink->common.fd, SNDCTL_DSP_RESET, 0);
627 gst_oss_clock_set_active (osssink->provided_clock, FALSE);
628 osssink->resync = TRUE;
631 case GST_STATE_PAUSED_TO_READY:
632 if (GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN))
633 ioctl (osssink->common.fd, SNDCTL_DSP_RESET, 0);
634 gst_osscommon_reset (&osssink->common);
636 case GST_STATE_READY_TO_NULL:
637 if (GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN)) {
638 gst_osscommon_close_audio (&osssink->common);
639 GST_FLAG_UNSET (osssink, GST_OSSSINK_OPEN);
641 GST_INFO ( "osssink: closed sound device");
646 if (GST_ELEMENT_CLASS (parent_class)->change_state)
647 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
649 return GST_STATE_SUCCESS;
653 gst_osssink_factory_init (GstPlugin *plugin)
655 GstElementFactory *factory;
657 factory = gst_element_factory_new ("osssink", GST_TYPE_OSSSINK, &gst_osssink_details);
658 g_return_val_if_fail (factory != NULL, FALSE);
660 gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (osssink_sink_factory));
662 gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));