2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@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/types.h>
29 #include <sys/soundcard.h>
30 #include <sys/ioctl.h>
35 #include <gstosssrc.h>
36 #include <gstosselement.h>
37 #include <gst/audio/audioclock.h>
39 /* elementfactory information */
40 static GstElementDetails gst_osssrc_details = GST_ELEMENT_DETAILS (
43 "Read from the sound card",
44 "Erik Walthinsen <omega@cse.ogi.edu>"
48 /* OssSrc signals and args */
60 static GstStaticPadTemplate osssrc_src_factory =
61 GST_STATIC_PAD_TEMPLATE (
65 GST_STATIC_CAPS ("audio/x-raw-int, "
66 "endianness = (int) BYTE_ORDER, "
67 "signed = (boolean) { TRUE, FALSE }, "
68 "width = (int) { 8, 16 }, "
69 "depth = (int) { 8, 16 }, "
70 "rate = (int) [ 1000, 48000 ], "
71 "channels = (int) [ 1, 2 ]"
75 static void gst_osssrc_base_init (gpointer g_class);
76 static void gst_osssrc_class_init (GstOssSrcClass *klass);
77 static void gst_osssrc_init (GstOssSrc *osssrc);
78 static void gst_osssrc_dispose (GObject *object);
80 static GstPadLinkReturn gst_osssrc_srcconnect (GstPad *pad, const GstCaps *caps);
81 static const GstFormat* gst_osssrc_get_formats (GstPad *pad);
82 static gboolean gst_osssrc_convert (GstPad *pad,
83 GstFormat src_format, gint64 src_value,
84 GstFormat *dest_format, gint64 *dest_value);
86 static void gst_osssrc_set_property (GObject *object, guint prop_id,
87 const GValue *value, GParamSpec *pspec);
88 static void gst_osssrc_get_property (GObject *object, guint prop_id,
89 GValue *value, GParamSpec *pspec);
90 static GstElementStateReturn gst_osssrc_change_state (GstElement *element);
92 static void gst_osssrc_set_clock (GstElement *element, GstClock *clock);
93 static GstClock* gst_osssrc_get_clock (GstElement *element);
94 static GstClockTime gst_osssrc_get_time (GstClock *clock, gpointer data);
96 static const GstEventMask* gst_osssrc_get_event_masks (GstPad *pad);
97 static gboolean gst_osssrc_src_event (GstPad *pad, GstEvent *event);
98 static gboolean gst_osssrc_send_event (GstElement *element, GstEvent *event);
99 static const GstQueryType* gst_osssrc_get_query_types (GstPad *pad);
100 static gboolean gst_osssrc_src_query (GstPad *pad, GstQueryType type,
101 GstFormat *format, gint64 *value);
103 static GstData * gst_osssrc_get (GstPad *pad);
105 static GstElementClass *parent_class = NULL;
106 /*static guint gst_osssrc_signals[LAST_SIGNAL] = { 0 }; */
109 gst_osssrc_get_type (void)
111 static GType osssrc_type = 0;
114 static const GTypeInfo osssrc_info = {
115 sizeof(GstOssSrcClass),
116 gst_osssrc_base_init,
118 (GClassInitFunc)gst_osssrc_class_init,
123 (GInstanceInitFunc)gst_osssrc_init,
125 osssrc_type = g_type_register_static (GST_TYPE_OSSELEMENT, "GstOssSrc", &osssrc_info, 0);
131 gst_osssrc_base_init (gpointer g_class)
133 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
135 gst_element_class_set_details (element_class, &gst_osssrc_details);
136 gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&osssrc_src_factory));
139 gst_osssrc_class_init (GstOssSrcClass *klass)
141 GObjectClass *gobject_class;
142 GstElementClass *gstelement_class;
144 gobject_class = (GObjectClass*)klass;
145 gstelement_class = (GstElementClass*)klass;
147 parent_class = g_type_class_ref (GST_TYPE_OSSELEMENT);
149 g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BUFFERSIZE,
150 g_param_spec_ulong ("buffersize","Buffer Size","The size of the buffers with samples",
151 0, G_MAXULONG, 0, G_PARAM_READWRITE));
152 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FRAGMENT,
153 g_param_spec_int ("fragment", "Fragment",
154 "The fragment as 0xMMMMSSSS (MMMM = total fragments, 2^SSSS = fragment size)",
155 0, G_MAXINT, 6, G_PARAM_READWRITE));
157 gobject_class->set_property = gst_osssrc_set_property;
158 gobject_class->get_property = gst_osssrc_get_property;
159 gobject_class->dispose = gst_osssrc_dispose;
161 gstelement_class->change_state = gst_osssrc_change_state;
162 gstelement_class->send_event = gst_osssrc_send_event;
164 gstelement_class->set_clock = gst_osssrc_set_clock;
165 gstelement_class->get_clock = gst_osssrc_get_clock;
169 gst_osssrc_init (GstOssSrc *osssrc)
171 osssrc->srcpad = gst_pad_new_from_template (
172 gst_static_pad_template_get (&osssrc_src_factory), "src");
173 gst_pad_set_get_function (osssrc->srcpad, gst_osssrc_get);
174 gst_pad_set_link_function (osssrc->srcpad, gst_osssrc_srcconnect);
175 gst_pad_set_convert_function (osssrc->srcpad, gst_osssrc_convert);
176 gst_pad_set_formats_function (osssrc->srcpad, gst_osssrc_get_formats);
177 gst_pad_set_event_function (osssrc->srcpad, gst_osssrc_src_event);
178 gst_pad_set_event_mask_function (osssrc->srcpad, gst_osssrc_get_event_masks);
179 gst_pad_set_query_function (osssrc->srcpad, gst_osssrc_src_query);
180 gst_pad_set_query_type_function (osssrc->srcpad, gst_osssrc_get_query_types);
183 gst_element_add_pad (GST_ELEMENT (osssrc), osssrc->srcpad);
185 osssrc->buffersize = 4096;
186 osssrc->curoffset = 0;
188 osssrc->provided_clock = gst_audio_clock_new ("ossclock", gst_osssrc_get_time, osssrc);
189 gst_object_set_parent (GST_OBJECT (osssrc->provided_clock), GST_OBJECT (osssrc));
191 osssrc->clock = NULL;
195 gst_osssrc_dispose (GObject *object)
197 GstOssSrc *osssrc = (GstOssSrc *) object;
199 gst_object_unparent (GST_OBJECT (osssrc->provided_clock));
201 G_OBJECT_CLASS (parent_class)->dispose (object);
204 static GstPadLinkReturn
205 gst_osssrc_srcconnect (GstPad *pad, const GstCaps *caps)
209 src = GST_OSSSRC(gst_pad_get_parent (pad));
211 if (!gst_osselement_parse_caps (GST_OSSELEMENT (src), caps))
212 return GST_PAD_LINK_REFUSED;
214 if (!gst_osselement_sync_parms (GST_OSSELEMENT (src)))
215 return GST_PAD_LINK_REFUSED;
217 return GST_PAD_LINK_OK;
221 gst_osssrc_negotiate (GstPad *pad)
226 src = GST_OSSSRC(gst_pad_get_parent (pad));
228 allowed = gst_pad_get_allowed_caps (pad);
230 if (!gst_osselement_merge_fixed_caps (GST_OSSELEMENT (src), allowed))
233 if (!gst_osselement_sync_parms (GST_OSSELEMENT (src)))
236 /* set caps on src pad */
237 if (gst_pad_try_set_caps (src->srcpad,
238 gst_caps_new_simple("audio/x-raw-int",
239 "endianness", G_TYPE_INT, GST_OSSELEMENT (src)->endianness,
240 "signed", G_TYPE_BOOLEAN, GST_OSSELEMENT (src)->sign,
241 "width", G_TYPE_INT, GST_OSSELEMENT (src)->width,
242 "depth", G_TYPE_INT, GST_OSSELEMENT (src)->depth,
243 "rate", G_TYPE_INT, GST_OSSELEMENT (src)->rate,
244 "channels", G_TYPE_INT, GST_OSSELEMENT (src)->channels,
252 gst_osssrc_get_time (GstClock *clock, gpointer data)
254 GstOssSrc *osssrc = GST_OSSSRC (data);
257 if (!GST_OSSELEMENT (osssrc)->bps)
260 if (ioctl(GST_OSSELEMENT (osssrc)->fd, SNDCTL_DSP_GETISPACE, &info) < 0)
263 return (osssrc->curoffset + info.bytes) * GST_SECOND / GST_OSSELEMENT (osssrc)->bps;
267 gst_osssrc_get_clock (GstElement *element)
271 osssrc = GST_OSSSRC (element);
273 return GST_CLOCK (osssrc->provided_clock);
277 gst_osssrc_set_clock (GstElement *element, GstClock *clock)
281 osssrc = GST_OSSSRC (element);
283 osssrc->clock = clock;
287 gst_osssrc_get (GstPad *pad)
293 src = GST_OSSSRC(gst_pad_get_parent (pad));
295 GST_DEBUG ("attempting to read something from the soundcard");
298 src->need_eos = FALSE;
299 return GST_DATA (gst_event_new (GST_EVENT_EOS));
302 buf = gst_buffer_new_and_alloc (src->buffersize);
304 if (!GST_PAD_CAPS (pad)) {
305 /* nothing was negotiated, we can decide on a format */
306 if (!gst_osssrc_negotiate (pad)) {
307 gst_buffer_unref (buf);
308 GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL), (NULL));
309 return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
312 if (GST_OSSELEMENT (src)->bps == 0) {
313 gst_buffer_unref (buf);
314 GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL),
315 ("format wasn't negotiated before chain function"));
316 return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
319 readbytes = read (GST_OSSELEMENT (src)->fd,GST_BUFFER_DATA (buf),
322 gst_buffer_unref (buf);
323 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
324 return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
327 if (readbytes == 0) {
328 gst_buffer_unref (buf);
329 gst_element_set_eos (GST_ELEMENT (src));
330 return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
333 GST_BUFFER_SIZE (buf) = readbytes;
334 GST_BUFFER_OFFSET (buf) = src->curoffset;
336 /* FIXME: we are falsely assuming that we are the master clock here */
337 GST_BUFFER_TIMESTAMP (buf) = src->curoffset * GST_SECOND / GST_OSSELEMENT (src)->bps;
338 GST_BUFFER_DURATION (buf) = (GST_SECOND * GST_BUFFER_SIZE (buf)) /
339 (GST_OSSELEMENT (src)->bps * GST_OSSELEMENT (src)->rate);
341 src->curoffset += readbytes;
343 GST_DEBUG ("pushed buffer from soundcard of %ld bytes, timestamp %" G_GINT64_FORMAT,
344 readbytes, GST_BUFFER_TIMESTAMP (buf));
346 return GST_DATA (buf);
350 gst_osssrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
354 src = GST_OSSSRC (object);
358 src->buffersize = g_value_get_ulong (value);
361 GST_OSSELEMENT (src)->fragment = g_value_get_int (value);
362 gst_osselement_sync_parms (GST_OSSELEMENT (src));
370 gst_osssrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
374 src = GST_OSSSRC (object);
378 g_value_set_ulong (value, src->buffersize);
381 g_value_set_int (value, GST_OSSELEMENT (src)->fragment);
384 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
389 static GstElementStateReturn
390 gst_osssrc_change_state (GstElement *element)
392 GstOssSrc *osssrc = GST_OSSSRC (element);
394 GST_DEBUG ("osssrc: state change");
396 switch (GST_STATE_TRANSITION (element)) {
397 case GST_STATE_READY_TO_PAUSED:
398 osssrc->curoffset = 0;
400 case GST_STATE_PAUSED_TO_PLAYING:
401 gst_audio_clock_set_active (GST_AUDIO_CLOCK (osssrc->provided_clock), TRUE);
403 case GST_STATE_PLAYING_TO_PAUSED:
404 gst_audio_clock_set_active (GST_AUDIO_CLOCK (osssrc->provided_clock), FALSE);
406 case GST_STATE_PAUSED_TO_READY:
407 if (GST_FLAG_IS_SET (element, GST_OSSSRC_OPEN))
408 ioctl (GST_OSSELEMENT (osssrc)->fd, SNDCTL_DSP_RESET, 0);
414 if (GST_ELEMENT_CLASS (parent_class)->change_state)
415 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
417 return GST_STATE_SUCCESS;
420 static const GstFormat*
421 gst_osssrc_get_formats (GstPad *pad)
423 static const GstFormat formats[] = {
433 gst_osssrc_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
434 GstFormat *dest_format, gint64 *dest_value)
438 osssrc = GST_OSSSRC (gst_pad_get_parent (pad));
440 return gst_osselement_convert (GST_OSSELEMENT (osssrc), src_format, src_value,
441 dest_format, dest_value);
444 static const GstEventMask*
445 gst_osssrc_get_event_masks (GstPad *pad)
447 static const GstEventMask gst_osssrc_src_event_masks[] = {
448 { GST_EVENT_EOS, 0 },
449 { GST_EVENT_SIZE, 0 },
452 return gst_osssrc_src_event_masks;
456 gst_osssrc_src_event (GstPad *pad, GstEvent *event)
459 gboolean retval = FALSE;
461 osssrc = GST_OSSSRC (gst_pad_get_parent (pad));
463 switch (GST_EVENT_TYPE (event)) {
465 osssrc->need_eos = TRUE;
473 format = GST_FORMAT_BYTES;
475 /* convert to bytes */
476 if (gst_osselement_convert (GST_OSSELEMENT (osssrc),
477 GST_EVENT_SIZE_FORMAT (event),
478 GST_EVENT_SIZE_VALUE (event),
481 osssrc->buffersize = GST_EVENT_SIZE_VALUE (event);
482 g_object_notify (G_OBJECT (osssrc), "buffersize");
489 gst_event_unref (event);
494 gst_osssrc_send_event (GstElement *element,
497 GstOssSrc *osssrc = GST_OSSSRC (element);
499 return gst_osssrc_src_event (osssrc->srcpad, event);
502 static const GstQueryType*
503 gst_osssrc_get_query_types (GstPad *pad)
505 static const GstQueryType query_types[] = {
513 gst_osssrc_src_query (GstPad *pad, GstQueryType type, GstFormat *format, gint64 *value)
515 gboolean res = FALSE;
518 osssrc = GST_OSSSRC (gst_pad_get_parent (pad));
521 case GST_QUERY_POSITION:
522 res = gst_osselement_convert (GST_OSSELEMENT (osssrc),
523 GST_FORMAT_BYTES, osssrc->curoffset,