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 =
41 GST_ELEMENT_DETAILS ("Audio Source (OSS)",
43 "Read from the sound card",
44 "Erik Walthinsen <omega@cse.ogi.edu>");
47 /* OssSrc signals and args */
61 static GstStaticPadTemplate osssrc_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
64 GST_STATIC_CAPS ("audio/x-raw-int, "
65 "endianness = (int) BYTE_ORDER, "
66 "signed = (boolean) { TRUE, FALSE }, "
67 "width = (int) { 8, 16 }, "
68 "depth = (int) { 8, 16 }, "
69 "rate = (int) [ 1000, 48000 ], " "channels = (int) [ 1, 2 ]")
72 static void gst_osssrc_base_init (gpointer g_class);
73 static void gst_osssrc_class_init (GstOssSrcClass * klass);
74 static void gst_osssrc_init (GstOssSrc * osssrc);
75 static void gst_osssrc_dispose (GObject * object);
77 static GstPadLinkReturn gst_osssrc_srcconnect (GstPad * pad,
78 const GstCaps * caps);
79 static const GstFormat *gst_osssrc_get_formats (GstPad * pad);
80 static gboolean gst_osssrc_convert (GstPad * pad,
81 GstFormat src_format, gint64 src_value,
82 GstFormat * dest_format, gint64 * dest_value);
84 static void gst_osssrc_set_property (GObject * object, guint prop_id,
85 const GValue * value, GParamSpec * pspec);
86 static void gst_osssrc_get_property (GObject * object, guint prop_id,
87 GValue * value, GParamSpec * pspec);
88 static GstElementStateReturn gst_osssrc_change_state (GstElement * element);
90 static void gst_osssrc_set_clock (GstElement * element, GstClock * clock);
91 static GstClock *gst_osssrc_get_clock (GstElement * element);
92 static GstClockTime gst_osssrc_get_time (GstClock * clock, gpointer data);
94 static const GstEventMask *gst_osssrc_get_event_masks (GstPad * pad);
95 static gboolean gst_osssrc_src_event (GstPad * pad, GstEvent * event);
96 static gboolean gst_osssrc_send_event (GstElement * element, GstEvent * event);
97 static const GstQueryType *gst_osssrc_get_query_types (GstPad * pad);
98 static gboolean gst_osssrc_src_query (GstPad * pad, GstQueryType type,
99 GstFormat * format, gint64 * value);
101 static GstData *gst_osssrc_get (GstPad * pad);
103 static GstElementClass *parent_class = NULL;
105 /*static guint gst_osssrc_signals[LAST_SIGNAL] = { 0 }; */
108 gst_osssrc_get_type (void)
110 static GType osssrc_type = 0;
113 static const GTypeInfo osssrc_info = {
114 sizeof (GstOssSrcClass),
115 gst_osssrc_base_init,
117 (GClassInitFunc) gst_osssrc_class_init,
122 (GInstanceInitFunc) gst_osssrc_init,
125 g_type_register_static (GST_TYPE_OSSELEMENT, "GstOssSrc", &osssrc_info,
132 gst_osssrc_base_init (gpointer g_class)
134 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
136 gst_element_class_set_details (element_class, &gst_osssrc_details);
137 gst_element_class_add_pad_template (element_class,
138 gst_static_pad_template_get (&osssrc_src_factory));
141 gst_osssrc_class_init (GstOssSrcClass * klass)
143 GObjectClass *gobject_class;
144 GstElementClass *gstelement_class;
146 gobject_class = (GObjectClass *) klass;
147 gstelement_class = (GstElementClass *) klass;
149 parent_class = g_type_class_ref (GST_TYPE_OSSELEMENT);
151 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BUFFERSIZE,
152 g_param_spec_ulong ("buffersize", "Buffer Size",
153 "The size of the buffers with samples", 0, G_MAXULONG, 0,
155 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FRAGMENT,
156 g_param_spec_int ("fragment", "Fragment",
157 "The fragment as 0xMMMMSSSS (MMMM = total fragments, 2^SSSS = fragment size)",
158 0, G_MAXINT, 6, G_PARAM_READWRITE));
160 gobject_class->set_property = gst_osssrc_set_property;
161 gobject_class->get_property = gst_osssrc_get_property;
162 gobject_class->dispose = gst_osssrc_dispose;
164 gstelement_class->change_state = gst_osssrc_change_state;
165 gstelement_class->send_event = gst_osssrc_send_event;
167 gstelement_class->set_clock = gst_osssrc_set_clock;
168 gstelement_class->get_clock = gst_osssrc_get_clock;
172 gst_osssrc_init (GstOssSrc * osssrc)
175 gst_pad_new_from_template (gst_static_pad_template_get
176 (&osssrc_src_factory), "src");
177 gst_pad_set_get_function (osssrc->srcpad, gst_osssrc_get);
178 gst_pad_set_link_function (osssrc->srcpad, gst_osssrc_srcconnect);
179 gst_pad_set_convert_function (osssrc->srcpad, gst_osssrc_convert);
180 gst_pad_set_formats_function (osssrc->srcpad, gst_osssrc_get_formats);
181 gst_pad_set_event_function (osssrc->srcpad, gst_osssrc_src_event);
182 gst_pad_set_event_mask_function (osssrc->srcpad, gst_osssrc_get_event_masks);
183 gst_pad_set_query_function (osssrc->srcpad, gst_osssrc_src_query);
184 gst_pad_set_query_type_function (osssrc->srcpad, gst_osssrc_get_query_types);
187 gst_element_add_pad (GST_ELEMENT (osssrc), osssrc->srcpad);
189 osssrc->buffersize = 4096;
190 osssrc->curoffset = 0;
192 osssrc->provided_clock =
193 gst_audio_clock_new ("ossclock", gst_osssrc_get_time, osssrc);
194 gst_object_set_parent (GST_OBJECT (osssrc->provided_clock),
195 GST_OBJECT (osssrc));
197 osssrc->clock = NULL;
201 gst_osssrc_dispose (GObject * object)
203 GstOssSrc *osssrc = (GstOssSrc *) object;
205 gst_object_unparent (GST_OBJECT (osssrc->provided_clock));
207 G_OBJECT_CLASS (parent_class)->dispose (object);
210 static GstPadLinkReturn
211 gst_osssrc_srcconnect (GstPad * pad, const GstCaps * caps)
215 src = GST_OSSSRC (gst_pad_get_parent (pad));
217 if (!gst_osselement_parse_caps (GST_OSSELEMENT (src), caps))
218 return GST_PAD_LINK_REFUSED;
220 if (!gst_osselement_sync_parms (GST_OSSELEMENT (src)))
221 return GST_PAD_LINK_REFUSED;
223 return GST_PAD_LINK_OK;
227 gst_osssrc_negotiate (GstPad * pad)
232 src = GST_OSSSRC (gst_pad_get_parent (pad));
234 allowed = gst_pad_get_allowed_caps (pad);
236 if (!gst_osselement_merge_fixed_caps (GST_OSSELEMENT (src), allowed))
239 if (!gst_osselement_sync_parms (GST_OSSELEMENT (src)))
242 /* set caps on src pad */
243 if (gst_pad_try_set_caps (src->srcpad,
244 gst_caps_new_simple ("audio/x-raw-int",
245 "endianness", G_TYPE_INT, GST_OSSELEMENT (src)->endianness,
246 "signed", G_TYPE_BOOLEAN, GST_OSSELEMENT (src)->sign,
247 "width", G_TYPE_INT, GST_OSSELEMENT (src)->width,
248 "depth", G_TYPE_INT, GST_OSSELEMENT (src)->depth,
249 "rate", G_TYPE_INT, GST_OSSELEMENT (src)->rate,
250 "channels", G_TYPE_INT, GST_OSSELEMENT (src)->channels,
258 gst_osssrc_get_time (GstClock * clock, gpointer data)
260 GstOssSrc *osssrc = GST_OSSSRC (data);
263 if (!GST_OSSELEMENT (osssrc)->bps)
266 if (ioctl (GST_OSSELEMENT (osssrc)->fd, SNDCTL_DSP_GETISPACE, &info) < 0)
269 return (osssrc->curoffset +
270 info.bytes) * GST_SECOND / GST_OSSELEMENT (osssrc)->bps;
274 gst_osssrc_get_clock (GstElement * element)
278 osssrc = GST_OSSSRC (element);
280 return GST_CLOCK (osssrc->provided_clock);
284 gst_osssrc_set_clock (GstElement * element, GstClock * clock)
288 osssrc = GST_OSSSRC (element);
290 osssrc->clock = clock;
294 gst_osssrc_get (GstPad * pad)
300 src = GST_OSSSRC (gst_pad_get_parent (pad));
302 GST_DEBUG ("attempting to read something from the soundcard");
305 src->need_eos = FALSE;
306 return GST_DATA (gst_event_new (GST_EVENT_EOS));
309 buf = gst_buffer_new_and_alloc (src->buffersize);
311 if (!GST_PAD_CAPS (pad)) {
312 /* nothing was negotiated, we can decide on a format */
313 if (!gst_osssrc_negotiate (pad)) {
314 gst_buffer_unref (buf);
315 GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL), (NULL));
316 return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
319 if (GST_OSSELEMENT (src)->bps == 0) {
320 gst_buffer_unref (buf);
321 GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL),
322 ("format wasn't negotiated before chain function"));
323 return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
326 readbytes = read (GST_OSSELEMENT (src)->fd, GST_BUFFER_DATA (buf),
329 gst_buffer_unref (buf);
330 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
331 return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
334 if (readbytes == 0) {
335 gst_buffer_unref (buf);
336 gst_element_set_eos (GST_ELEMENT (src));
337 return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
340 GST_BUFFER_SIZE (buf) = readbytes;
341 GST_BUFFER_OFFSET (buf) = src->curoffset;
343 /* FIXME: we are falsely assuming that we are the master clock here */
344 GST_BUFFER_TIMESTAMP (buf) =
345 src->curoffset * GST_SECOND / GST_OSSELEMENT (src)->bps;
346 GST_BUFFER_DURATION (buf) =
347 (GST_SECOND * GST_BUFFER_SIZE (buf)) / (GST_OSSELEMENT (src)->bps *
348 GST_OSSELEMENT (src)->rate);
350 src->curoffset += readbytes;
352 GST_DEBUG ("pushed buffer from soundcard of %ld bytes, timestamp %"
353 G_GINT64_FORMAT, readbytes, GST_BUFFER_TIMESTAMP (buf));
355 return GST_DATA (buf);
359 gst_osssrc_set_property (GObject * object, guint prop_id, const GValue * value,
364 src = GST_OSSSRC (object);
368 src->buffersize = g_value_get_ulong (value);
371 GST_OSSELEMENT (src)->fragment = g_value_get_int (value);
372 gst_osselement_sync_parms (GST_OSSELEMENT (src));
380 gst_osssrc_get_property (GObject * object, guint prop_id, GValue * value,
385 src = GST_OSSSRC (object);
389 g_value_set_ulong (value, src->buffersize);
392 g_value_set_int (value, GST_OSSELEMENT (src)->fragment);
395 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
400 static GstElementStateReturn
401 gst_osssrc_change_state (GstElement * element)
403 GstOssSrc *osssrc = GST_OSSSRC (element);
405 GST_DEBUG ("osssrc: state change");
407 switch (GST_STATE_TRANSITION (element)) {
408 case GST_STATE_READY_TO_PAUSED:
409 osssrc->curoffset = 0;
411 case GST_STATE_PAUSED_TO_PLAYING:
412 gst_audio_clock_set_active (GST_AUDIO_CLOCK (osssrc->provided_clock),
415 case GST_STATE_PLAYING_TO_PAUSED:
416 gst_audio_clock_set_active (GST_AUDIO_CLOCK (osssrc->provided_clock),
419 case GST_STATE_PAUSED_TO_READY:
420 if (GST_FLAG_IS_SET (element, GST_OSSSRC_OPEN))
421 ioctl (GST_OSSELEMENT (osssrc)->fd, SNDCTL_DSP_RESET, 0);
427 if (GST_ELEMENT_CLASS (parent_class)->change_state)
428 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
430 return GST_STATE_SUCCESS;
433 static const GstFormat *
434 gst_osssrc_get_formats (GstPad * pad)
436 static const GstFormat formats[] = {
446 gst_osssrc_convert (GstPad * pad, GstFormat src_format, gint64 src_value,
447 GstFormat * dest_format, gint64 * dest_value)
451 osssrc = GST_OSSSRC (gst_pad_get_parent (pad));
453 return gst_osselement_convert (GST_OSSELEMENT (osssrc), src_format, src_value,
454 dest_format, dest_value);
457 static const GstEventMask *
458 gst_osssrc_get_event_masks (GstPad * pad)
460 static const GstEventMask gst_osssrc_src_event_masks[] = {
465 return gst_osssrc_src_event_masks;
469 gst_osssrc_src_event (GstPad * pad, GstEvent * event)
472 gboolean retval = FALSE;
474 osssrc = GST_OSSSRC (gst_pad_get_parent (pad));
476 switch (GST_EVENT_TYPE (event)) {
478 osssrc->need_eos = TRUE;
486 format = GST_FORMAT_BYTES;
488 /* convert to bytes */
489 if (gst_osselement_convert (GST_OSSELEMENT (osssrc),
490 GST_EVENT_SIZE_FORMAT (event),
491 GST_EVENT_SIZE_VALUE (event), &format, &value)) {
492 osssrc->buffersize = GST_EVENT_SIZE_VALUE (event);
493 g_object_notify (G_OBJECT (osssrc), "buffersize");
500 gst_event_unref (event);
505 gst_osssrc_send_event (GstElement * element, GstEvent * event)
507 GstOssSrc *osssrc = GST_OSSSRC (element);
509 return gst_osssrc_src_event (osssrc->srcpad, event);
512 static const GstQueryType *
513 gst_osssrc_get_query_types (GstPad * pad)
515 static const GstQueryType query_types[] = {
523 gst_osssrc_src_query (GstPad * pad, GstQueryType type, GstFormat * format,
526 gboolean res = FALSE;
529 osssrc = GST_OSSSRC (gst_pad_get_parent (pad));
532 case GST_QUERY_POSITION:
533 res = gst_osselement_convert (GST_OSSELEMENT (osssrc),
534 GST_FORMAT_BYTES, osssrc->curoffset, format, value);