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 GstStateChangeReturn gst_esdmon_change_state (GstElement * element,
80 GstStateChange transition);
81 static gboolean gst_esdmon_sync_parms (GstEsdmon * esdmon);
83 static GstData *gst_esdmon_get (GstPad * pad);
85 static void gst_esdmon_set_property (GObject * object, guint prop_id,
86 const GValue * value, GParamSpec * pspec);
87 static void gst_esdmon_get_property (GObject * object, guint prop_id,
88 GValue * value, GParamSpec * pspec);
90 #define GST_TYPE_ESDMON_DEPTHS (gst_esdmon_depths_get_type())
92 gst_esdmon_depths_get_type (void)
94 static GType esdmon_depths_type = 0;
95 static GEnumValue esdmon_depths[] = {
97 {16, "16 Bits", "16"},
101 if (!esdmon_depths_type) {
103 g_enum_register_static ("GstEsdmonDepths", esdmon_depths);
105 return esdmon_depths_type;
108 #define GST_TYPE_ESDMON_CHANNELS (gst_esdmon_channels_get_type())
110 gst_esdmon_channels_get_type (void)
112 static GType esdmon_channels_type = 0;
113 static GEnumValue esdmon_channels[] = {
115 {2, "Stereo", "stereo"},
119 if (!esdmon_channels_type) {
120 esdmon_channels_type =
121 g_enum_register_static ("GstEsdmonChannels", esdmon_channels);
123 return esdmon_channels_type;
127 static GstElementClass *parent_class = NULL;
129 /*static guint gst_esdmon_signals[LAST_SIGNAL] = { 0 }; */
132 gst_esdmon_get_type (void)
134 static GType esdmon_type = 0;
137 static const GTypeInfo esdmon_info = {
138 sizeof (GstEsdmonClass),
139 gst_esdmon_base_init,
141 gst_esdmon_class_init,
150 g_type_register_static (GST_TYPE_ELEMENT, "GstEsdmon", &esdmon_info, 0);
156 gst_esdmon_base_init (gpointer g_class)
158 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
160 gst_element_class_add_pad_template (element_class,
161 gst_static_pad_template_get (&src_factory));
162 gst_element_class_set_details (element_class, &esdmon_details);
166 gst_esdmon_class_init (gpointer g_class, gpointer class_data)
168 GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
169 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
171 parent_class = g_type_class_peek_parent (g_class);
173 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 */
174 g_object_class_install_property (gobject_class, ARG_CUROFFSET, g_param_spec_ulong ("curoffset", "curoffset", "curoffset", 0, G_MAXULONG, 0, G_PARAM_READABLE)); /* CHECKME */
175 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! */
176 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! */
177 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 */
178 g_object_class_install_property (gobject_class, ARG_HOST, g_param_spec_string ("host", "host", "host", NULL, G_PARAM_READWRITE)); /* CHECKME */
180 gobject_class->set_property = gst_esdmon_set_property;
181 gobject_class->get_property = gst_esdmon_get_property;
183 gstelement_class->change_state = gst_esdmon_change_state;
187 gst_esdmon_init (GTypeInstance * instance, gpointer g_class)
189 GstEsdmon *esdmon = GST_ESDMON (instance);
192 gst_pad_new_from_template (gst_element_class_get_pad_template
193 (GST_ELEMENT_GET_CLASS (esdmon), "src"), "src");
194 gst_pad_set_get_function (esdmon->srcpad, gst_esdmon_get);
195 gst_pad_use_explicit_caps (esdmon->srcpad);
196 gst_element_add_pad (GST_ELEMENT (esdmon), esdmon->srcpad);
199 /* FIXME: get default from somewhere better than just putting them inline. */
201 esdmon->channels = 2;
202 esdmon->frequency = 44100;
204 esdmon->bytes_per_read = 4096;
205 esdmon->curoffset = 0;
206 esdmon->basetime = 0;
207 esdmon->samples_since_basetime = 0;
211 gst_esdmon_sync_parms (GstEsdmon * esdmon)
213 g_return_val_if_fail (esdmon != NULL, FALSE);
214 g_return_val_if_fail (GST_IS_ESDMON (esdmon), FALSE);
216 if (esdmon->fd == -1)
219 /* Need to set fd to use new parameters: only way to do this is to reopen. */
220 gst_esdmon_close_audio (esdmon);
221 return gst_esdmon_open_audio (esdmon);
225 gst_esdmon_get (GstPad * pad)
232 g_return_val_if_fail (pad != NULL, NULL);
233 esdmon = GST_ESDMON (gst_pad_get_parent (pad));
235 GST_DEBUG ("attempting to read something from esdmon");
237 buf = gst_buffer_new ();
238 g_return_val_if_fail (buf, NULL);
240 GST_BUFFER_DATA (buf) = (gpointer) g_malloc (esdmon->bytes_per_read);
242 readbytes = read (esdmon->fd, GST_BUFFER_DATA (buf), esdmon->bytes_per_read);
244 if (readbytes == 0) {
245 gst_element_set_eos (GST_ELEMENT (esdmon));
248 if (!GST_PAD_CAPS (pad)) {
249 GstCaps *caps = gst_caps_new_simple ("audio/x-raw-int",
250 "endianness", G_TYPE_INT, G_BYTE_ORDER,
251 "signed", G_TYPE_BOOLEAN, esdmon->depth == 8 ? FALSE : TRUE,
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,
258 /* set caps on src pad */
259 if (gst_pad_set_explicit_caps (esdmon->srcpad, caps) <= 0) {
260 GST_ELEMENT_ERROR (esdmon, CORE, NEGOTIATION, (NULL), (NULL));
261 gst_caps_free (caps);
264 gst_caps_free (caps);
267 GST_BUFFER_SIZE (buf) = readbytes;
268 GST_BUFFER_OFFSET (buf) = esdmon->curoffset;
269 GST_BUFFER_TIMESTAMP (buf) = esdmon->basetime +
270 esdmon->samples_since_basetime * GST_SECOND / esdmon->frequency;
272 esdmon->curoffset += readbytes;
273 readsamples = readbytes / esdmon->channels;
274 if (esdmon->depth == 16)
276 esdmon->samples_since_basetime += readsamples;
278 GST_DEBUG ("pushed buffer from esdmon of %ld bytes, timestamp %"
279 G_GINT64_FORMAT, readbytes, GST_BUFFER_TIMESTAMP (buf));
280 gst_object_unref (esdmon);
281 return GST_DATA (buf);
285 gst_esdmon_set_property (GObject * object, guint prop_id, const GValue * value,
290 g_return_if_fail (GST_IS_ESDMON (object));
291 esdmon = GST_ESDMON (object);
294 case ARG_BYTESPERREAD:
295 esdmon->bytes_per_read = g_value_get_ulong (value);
296 /* No need to sync params - will just happen on next read. */
299 esdmon->depth = g_value_get_enum (value);
300 gst_esdmon_sync_parms (esdmon);
303 esdmon->channels = g_value_get_enum (value);
304 gst_esdmon_sync_parms (esdmon);
307 /* Preserve the timestamps */
309 esdmon->samples_since_basetime * GST_SECOND / esdmon->frequency;
310 esdmon->samples_since_basetime = 0;
312 /* Set the new frequency */
313 esdmon->frequency = g_value_get_int (value);
314 gst_esdmon_sync_parms (esdmon);
317 if (esdmon->host != NULL)
318 g_free (esdmon->host);
319 if (g_value_get_string (value) == NULL)
322 esdmon->host = g_strdup (g_value_get_string (value));
330 gst_esdmon_get_property (GObject * object, guint prop_id, GValue * value,
335 g_return_if_fail (GST_IS_ESDMON (object));
336 esdmon = GST_ESDMON (object);
339 case ARG_BYTESPERREAD:
340 g_value_set_ulong (value, esdmon->bytes_per_read);
343 g_value_set_ulong (value, esdmon->curoffset);
346 g_value_set_enum (value, esdmon->depth);
349 g_value_set_enum (value, esdmon->channels);
352 g_value_set_int (value, esdmon->frequency);
355 g_value_set_string (value, esdmon->host);
358 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
364 gst_esdmon_factory_init (GstPlugin * plugin)
366 if (!gst_element_register (plugin, "esdmon", GST_RANK_NONE, GST_TYPE_ESDMON))
373 gst_esdmon_open_audio (GstEsdmon * src)
375 /* Name used by esound for this connection. */
376 const char connname[] = "GStreamer";
378 /* Bitmap describing audio format. */
379 esd_format_t esdformat = ESD_STREAM | ESD_PLAY;
381 g_return_val_if_fail (src->fd == -1, FALSE);
383 if (src->depth == 16)
384 esdformat |= ESD_BITS16;
385 else if (src->depth == 8)
386 esdformat |= ESD_BITS8;
388 GST_DEBUG ("esdmon: invalid bit depth (%d)", src->depth);
392 if (src->channels == 2)
393 esdformat |= ESD_STEREO;
394 else if (src->channels == 1)
395 esdformat |= ESD_MONO;
397 GST_DEBUG ("esdmon: invalid number of channels (%d)", src->channels);
401 GST_DEBUG ("esdmon: attempting to open connection to esound server");
402 src->fd = esd_monitor_stream (esdformat, src->frequency, src->host, connname);
404 GST_DEBUG ("esdmon: can't open connection to esound server");
408 GST_OBJECT_FLAG_SET (src, GST_ESDMON_OPEN);
414 gst_esdmon_close_audio (GstEsdmon * src)
422 GST_OBJECT_FLAG_UNSET (src, GST_ESDMON_OPEN);
424 GST_DEBUG ("esdmon: closed sound device");
427 static GstStateChangeReturn
428 gst_esdmon_change_state (GstElement * element, GstStateChange transition)
430 g_return_val_if_fail (GST_IS_ESDMON (element), FALSE);
432 /* if going down into NULL state, close the fd if it's open */
433 if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
434 if (GST_OBJECT_FLAG_IS_SET (element, GST_ESDMON_OPEN))
435 gst_esdmon_close_audio (GST_ESDMON (element));
436 /* otherwise (READY or higher) we need to open the fd */
438 if (!GST_OBJECT_FLAG_IS_SET (element, GST_ESDMON_OPEN)) {
439 if (!gst_esdmon_open_audio (GST_ESDMON (element)))
440 return GST_STATE_CHANGE_FAILURE;
444 if (GST_ELEMENT_CLASS (parent_class)->change_state)
445 return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
446 return GST_STATE_CHANGE_SUCCESS;