2 * Copyright (C) <2001,2002> Richard Boulton <richard-gst@tartarus.org>
5 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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.
31 /* elementfactory information */
32 static GstElementDetails esdmon_details = {
33 "Esound audio monitor",
35 "Monitors audio from an esound server",
36 "Richard Boulton <richard-gst@tartarus.org>",
39 /* Signals and args */
57 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
60 GST_STATIC_CAPS ("audio/x-raw-int, "
61 "endianness = (int) " G_STRINGIFY (G_BYTE_ORDER) ", "
62 "signed = (boolean) TRUE, "
65 "rate = [ 8000, 96000 ], "
66 "channels = [ 1, 2 ]; "
68 "signed = (boolean) FALSE, "
70 "depth = (int) 8, " "rate = [ 8000, 96000 ], " "channels = [ 1, 2 ]")
73 static void gst_esdmon_base_init (gpointer g_class);
74 static void gst_esdmon_class_init (gpointer g_class, gpointer class_data);
75 static void gst_esdmon_init (GTypeInstance * instance, gpointer g_class);
77 static gboolean gst_esdmon_open_audio (GstEsdmon * src);
78 static void gst_esdmon_close_audio (GstEsdmon * src);
79 static GstElementStateReturn gst_esdmon_change_state (GstElement * element);
80 static gboolean gst_esdmon_sync_parms (GstEsdmon * esdmon);
82 static GstData *gst_esdmon_get (GstPad * pad);
84 static void gst_esdmon_set_property (GObject * object, guint prop_id,
85 const GValue * value, GParamSpec * pspec);
86 static void gst_esdmon_get_property (GObject * object, guint prop_id,
87 GValue * value, GParamSpec * pspec);
89 #define GST_TYPE_ESDMON_DEPTHS (gst_esdmon_depths_get_type())
91 gst_esdmon_depths_get_type (void)
93 static GType esdmon_depths_type = 0;
94 static GEnumValue esdmon_depths[] = {
96 {16, "16", "16 Bits"},
99 if (!esdmon_depths_type) {
101 g_enum_register_static ("GstEsdmonDepths", esdmon_depths);
103 return esdmon_depths_type;
106 #define GST_TYPE_ESDMON_CHANNELS (gst_esdmon_channels_get_type())
108 gst_esdmon_channels_get_type (void)
110 static GType esdmon_channels_type = 0;
111 static GEnumValue esdmon_channels[] = {
116 if (!esdmon_channels_type) {
117 esdmon_channels_type =
118 g_enum_register_static ("GstEsdmonChannels", esdmon_channels);
120 return esdmon_channels_type;
124 static GstElementClass *parent_class = NULL;
126 /*static guint gst_esdmon_signals[LAST_SIGNAL] = { 0 }; */
129 gst_esdmon_get_type (void)
131 static GType esdmon_type = 0;
134 static const GTypeInfo esdmon_info = {
135 sizeof (GstEsdmonClass),
136 gst_esdmon_base_init,
138 gst_esdmon_class_init,
146 g_type_register_static (GST_TYPE_ELEMENT, "GstEsdmon", &esdmon_info, 0);
152 gst_esdmon_base_init (gpointer g_class)
154 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
156 gst_element_class_add_pad_template (element_class,
157 gst_static_pad_template_get (&src_factory));
158 gst_element_class_set_details (element_class, &esdmon_details);
162 gst_esdmon_class_init (gpointer g_class, gpointer class_data)
164 GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
165 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
167 parent_class = g_type_class_peek_parent (g_class);
169 g_object_class_install_property (gobject_class, ARG_BYTESPERREAD, g_param_spec_ulong ("bytes_per_read", "bytes_per_read", "bytes_per_read", 0, G_MAXULONG, 0, G_PARAM_READWRITE)); /* CHECKME */
170 g_object_class_install_property (gobject_class, ARG_CUROFFSET, g_param_spec_ulong ("curoffset", "curoffset", "curoffset", 0, G_MAXULONG, 0, G_PARAM_READABLE)); /* CHECKME */
171 g_object_class_install_property (gobject_class, ARG_DEPTH, g_param_spec_enum ("depth", "depth", "depth", GST_TYPE_ESDMON_DEPTHS, 16, G_PARAM_READWRITE)); /* CHECKME! */
172 g_object_class_install_property (gobject_class, ARG_CHANNELS, g_param_spec_enum ("channels", "channels", "channels", GST_TYPE_ESDMON_CHANNELS, 2, G_PARAM_READWRITE)); /* CHECKME! */
173 g_object_class_install_property (gobject_class, ARG_RATE, g_param_spec_int ("frequency", "frequency", "frequency", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); /* CHECKME */
174 g_object_class_install_property (gobject_class, ARG_HOST, g_param_spec_string ("host", "host", "host", NULL, G_PARAM_READWRITE)); /* CHECKME */
176 gobject_class->set_property = gst_esdmon_set_property;
177 gobject_class->get_property = gst_esdmon_get_property;
179 gstelement_class->change_state = gst_esdmon_change_state;
183 gst_esdmon_init (GTypeInstance * instance, gpointer g_class)
185 GstEsdmon *esdmon = GST_ESDMON (instance);
188 gst_pad_new_from_template (gst_element_class_get_pad_template
189 (GST_ELEMENT_GET_CLASS (esdmon), "src"), "src");
190 gst_pad_set_get_function (esdmon->srcpad, gst_esdmon_get);
191 gst_pad_use_explicit_caps (esdmon->srcpad);
192 gst_element_add_pad (GST_ELEMENT (esdmon), esdmon->srcpad);
195 /* FIXME: get default from somewhere better than just putting them inline. */
197 esdmon->channels = 2;
198 esdmon->frequency = 44100;
200 esdmon->bytes_per_read = 4096;
201 esdmon->curoffset = 0;
202 esdmon->basetime = 0;
203 esdmon->samples_since_basetime = 0;
207 gst_esdmon_sync_parms (GstEsdmon * esdmon)
209 g_return_val_if_fail (esdmon != NULL, FALSE);
210 g_return_val_if_fail (GST_IS_ESDMON (esdmon), FALSE);
212 if (esdmon->fd == -1)
215 /* Need to set fd to use new parameters: only way to do this is to reopen. */
216 gst_esdmon_close_audio (esdmon);
217 return gst_esdmon_open_audio (esdmon);
221 gst_esdmon_get (GstPad * pad)
228 g_return_val_if_fail (pad != NULL, NULL);
229 esdmon = GST_ESDMON (gst_pad_get_parent (pad));
231 GST_DEBUG ("attempting to read something from esdmon");
233 buf = gst_buffer_new ();
234 g_return_val_if_fail (buf, NULL);
236 GST_BUFFER_DATA (buf) = (gpointer) g_malloc (esdmon->bytes_per_read);
238 readbytes = read (esdmon->fd, GST_BUFFER_DATA (buf), esdmon->bytes_per_read);
240 if (readbytes == 0) {
241 gst_element_set_eos (GST_ELEMENT (esdmon));
244 if (!GST_PAD_CAPS (pad)) {
245 gint sign = (esdmon->depth == 8 ? FALSE : TRUE);
247 /* set caps on src pad */
248 if (gst_pad_set_explicit_caps (esdmon->srcpad,
249 gst_caps_new_simple ("audio/x-raw-int",
250 "endianness", G_TYPE_INT, G_BYTE_ORDER,
251 "signed", G_TYPE_BOOLEAN, sign,
252 "width", G_TYPE_INT, esdmon->depth,
253 "depth", G_TYPE_INT, esdmon->depth,
254 "rate", G_TYPE_INT, esdmon->frequency,
255 "channels", G_TYPE_INT, esdmon->channels)) <= 0) {
256 GST_ELEMENT_ERROR (esdmon, CORE, NEGOTIATION, (NULL), (NULL));
261 GST_BUFFER_SIZE (buf) = readbytes;
262 GST_BUFFER_OFFSET (buf) = esdmon->curoffset;
263 GST_BUFFER_TIMESTAMP (buf) = esdmon->basetime +
264 esdmon->samples_since_basetime * GST_SECOND / esdmon->frequency;
266 esdmon->curoffset += readbytes;
267 readsamples = readbytes / esdmon->channels;
268 if (esdmon->depth == 16)
270 esdmon->samples_since_basetime += readsamples;
272 GST_DEBUG ("pushed buffer from esdmon of %ld bytes, timestamp %"
273 G_GINT64_FORMAT, readbytes, GST_BUFFER_TIMESTAMP (buf));
274 return GST_DATA (buf);
278 gst_esdmon_set_property (GObject * object, guint prop_id, const GValue * value,
283 /* it's not null if we got it, but it might not be ours */
284 g_return_if_fail (GST_IS_ESDMON (object));
285 esdmon = GST_ESDMON (object);
288 case ARG_BYTESPERREAD:
289 esdmon->bytes_per_read = g_value_get_ulong (value);
290 /* No need to sync params - will just happen on next read. */
293 esdmon->depth = g_value_get_enum (value);
294 gst_esdmon_sync_parms (esdmon);
297 esdmon->channels = g_value_get_enum (value);
298 gst_esdmon_sync_parms (esdmon);
301 /* Preserve the timestamps */
303 esdmon->samples_since_basetime * GST_SECOND / esdmon->frequency;
304 esdmon->samples_since_basetime = 0;
306 /* Set the new frequency */
307 esdmon->frequency = g_value_get_int (value);
308 gst_esdmon_sync_parms (esdmon);
311 if (esdmon->host != NULL)
312 g_free (esdmon->host);
313 if (g_value_get_string (value) == NULL)
316 esdmon->host = g_strdup (g_value_get_string (value));
324 gst_esdmon_get_property (GObject * object, guint prop_id, GValue * value,
329 /* it's not null if we got it, but it might not be ours */
330 g_return_if_fail (GST_IS_ESDMON (object));
331 esdmon = GST_ESDMON (object);
334 case ARG_BYTESPERREAD:
335 g_value_set_ulong (value, esdmon->bytes_per_read);
338 g_value_set_ulong (value, esdmon->curoffset);
341 g_value_set_enum (value, esdmon->depth);
344 g_value_set_enum (value, esdmon->channels);
347 g_value_set_int (value, esdmon->frequency);
350 g_value_set_string (value, esdmon->host);
353 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
359 gst_esdmon_factory_init (GstPlugin * plugin)
361 if (!gst_element_register (plugin, "esdmon", GST_RANK_NONE, GST_TYPE_ESDMON))
368 gst_esdmon_open_audio (GstEsdmon * src)
370 /* Name used by esound for this connection. */
371 const char *connname = "GStreamer";
373 /* Bitmap describing audio format. */
374 esd_format_t esdformat = ESD_STREAM | ESD_PLAY;
376 g_return_val_if_fail (src->fd == -1, FALSE);
378 if (src->depth == 16)
379 esdformat |= ESD_BITS16;
380 else if (src->depth == 8)
381 esdformat |= ESD_BITS8;
383 GST_DEBUG ("esdmon: invalid bit depth (%d)", src->depth);
387 if (src->channels == 2)
388 esdformat |= ESD_STEREO;
389 else if (src->channels == 1)
390 esdformat |= ESD_MONO;
392 GST_DEBUG ("esdmon: invalid number of channels (%d)", src->channels);
396 GST_DEBUG ("esdmon: attempting to open connection to esound server");
397 src->fd = esd_monitor_stream (esdformat, src->frequency, src->host, connname);
399 GST_DEBUG ("esdmon: can't open connection to esound server");
403 GST_FLAG_SET (src, GST_ESDMON_OPEN);
409 gst_esdmon_close_audio (GstEsdmon * src)
417 GST_FLAG_UNSET (src, GST_ESDMON_OPEN);
419 GST_DEBUG ("esdmon: closed sound device");
422 static GstElementStateReturn
423 gst_esdmon_change_state (GstElement * element)
425 g_return_val_if_fail (GST_IS_ESDMON (element), FALSE);
427 /* if going down into NULL state, close the fd if it's open */
428 if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
429 if (GST_FLAG_IS_SET (element, GST_ESDMON_OPEN))
430 gst_esdmon_close_audio (GST_ESDMON (element));
431 /* otherwise (READY or higher) we need to open the fd */
433 if (!GST_FLAG_IS_SET (element, GST_ESDMON_OPEN)) {
434 if (!gst_esdmon_open_audio (GST_ESDMON (element)))
435 return GST_STATE_FAILURE;
439 if (GST_ELEMENT_CLASS (parent_class)->change_state)
440 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
441 return GST_STATE_SUCCESS;