2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2005 Wim Taymans <wim@fluendo.com>
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.
28 #include <sys/types.h>
30 #include <sys/soundcard.h>
32 #include <sys/ioctl.h>
35 #include "gstossdmabuffer.h"
37 GST_DEBUG_CATEGORY_EXTERN (oss_debug);
38 #define GST_CAT_DEFAULT oss_debug
40 static void gst_ossdmabuffer_class_init (GstOssDMABufferClass * klass);
41 static void gst_ossdmabuffer_init (GstOssDMABuffer * ossdmabuffer);
42 static void gst_ossdmabuffer_dispose (GObject * object);
43 static void gst_ossdmabuffer_finalize (GObject * object);
45 static gboolean gst_ossdmabuffer_acquire (GstRingBuffer * buf,
46 GstRingBufferSpec * spec);
47 static gboolean gst_ossdmabuffer_release (GstRingBuffer * buf);
48 static gboolean gst_ossdmabuffer_play (GstRingBuffer * buf);
49 static gboolean gst_ossdmabuffer_stop (GstRingBuffer * buf);
51 static GstRingBufferClass *parent_class = NULL;
54 gst_ossdmabuffer_get_type (void)
56 static GType ossdmabuffer_type = 0;
58 if (!ossdmabuffer_type) {
59 static const GTypeInfo ossdmabuffer_info = {
60 sizeof (GstOssDMABufferClass),
63 (GClassInitFunc) gst_ossdmabuffer_class_init,
66 sizeof (GstOssDMABuffer),
68 (GInstanceInitFunc) gst_ossdmabuffer_init,
73 g_type_register_static (GST_TYPE_RINGBUFFER, "GstOssDMABuffer",
74 &ossdmabuffer_info, 0);
76 return ossdmabuffer_type;
80 gst_ossdmabuffer_class_init (GstOssDMABufferClass * klass)
82 GObjectClass *gobject_class;
83 GstObjectClass *gstobject_class;
84 GstRingBufferClass *gstringbuffer_class;
86 gobject_class = (GObjectClass *) klass;
87 gstobject_class = (GstObjectClass *) klass;
88 gstringbuffer_class = (GstRingBufferClass *) klass;
90 parent_class = g_type_class_ref (GST_TYPE_RINGBUFFER);
92 gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_ossdmabuffer_dispose);
93 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_ossdmabuffer_finalize);
95 gstringbuffer_class->acquire = gst_ossdmabuffer_acquire;
96 gstringbuffer_class->release = gst_ossdmabuffer_release;
97 gstringbuffer_class->play = gst_ossdmabuffer_play;
98 gstringbuffer_class->stop = gst_ossdmabuffer_stop;
102 gst_ossdmabuffer_init (GstOssDMABuffer * ossdmabuffer)
104 ossdmabuffer->cond = g_cond_new ();
105 ossdmabuffer->element = g_object_new (GST_TYPE_OSSELEMENT, NULL);
109 gst_ossdmabuffer_dispose (GObject * object)
111 G_OBJECT_CLASS (parent_class)->dispose (object);
115 gst_ossdmabuffer_finalize (GObject * object)
117 GstOssDMABuffer *obuf = (GstOssDMABuffer *) object;
119 g_cond_free (obuf->cond);
121 G_OBJECT_CLASS (parent_class)->finalize (object);
125 gst_ossdmabuffer_func (GstRingBuffer * buf)
128 struct count_info count;
129 GstOssDMABuffer *obuf = (GstOssDMABuffer *) buf;
131 GST_OBJECT_LOCK (buf);
132 while (obuf->running) {
133 if (buf->state == GST_RINGBUFFER_STATE_PLAYING) {
136 GST_OBJECT_UNLOCK (buf);
138 segsize = buf->spec.segsize;
141 FD_SET (obuf->fd, &writeset);
143 select (obuf->fd + 1, NULL, &writeset, NULL, NULL);
145 if (ioctl (obuf->fd, SNDCTL_DSP_GETOPTR, &count) == -1) {
150 if (count.blocks > buf->spec.segtotal)
151 count.blocks = buf->spec.segtotal;
153 gst_ringbuffer_callback (buf, count.blocks);
155 GST_OBJECT_LOCK (buf);
157 GST_OSSDMABUFFER_SIGNAL (obuf);
158 GST_OSSDMABUFFER_WAIT (obuf);
161 GST_OBJECT_UNLOCK (buf);
165 gst_ossdmabuffer_acquire (GstRingBuffer * buf, GstRingBufferSpec * spec)
168 struct audio_buf_info info;
169 GstOssDMABuffer *obuf = (GstOssDMABuffer *) buf;;
175 parsed = gst_osselement_parse_caps (obuf->element, spec->caps);
182 obuf->fd = open ("/dev/dsp", mode, 0);
183 if (obuf->fd == -1) {
187 //obuf->frag = 0x00040008;
188 obuf->frag = 0xffff000a;
190 tmp = obuf->element->format;
191 if (ioctl (obuf->fd, SNDCTL_DSP_SETFMT, &tmp) == -1) {
196 tmp = obuf->element->channels;
197 if (ioctl (obuf->fd, SNDCTL_DSP_STEREO, &tmp) == -1) {
202 tmp = obuf->element->channels;
203 if (ioctl (obuf->fd, SNDCTL_DSP_CHANNELS, &tmp) == -1) {
208 tmp = obuf->element->rate;
209 if (ioctl (obuf->fd, SNDCTL_DSP_SPEED, &tmp) == -1) {
214 if (ioctl (obuf->fd, SNDCTL_DSP_GETCAPS, &obuf->caps) == -1) {
216 fprintf (stderr, "Sorry but your sound driver is too old\n");
220 if (!(obuf->caps & DSP_CAP_TRIGGER) || !(obuf->caps & DSP_CAP_MMAP)) {
221 fprintf (stderr, "Sorry but your soundcard can't do this\n");
225 if (ioctl (obuf->fd, SNDCTL_DSP_SETFRAGMENT, &obuf->frag) == -1) {
226 perror ("SETFRAGMENT");
230 if (ioctl (obuf->fd, SNDCTL_DSP_GETOSPACE, &info) == -1) {
231 perror ("GETOSPACE");
235 buf->spec.segsize = info.fragsize;
236 buf->spec.segtotal = info.fragstotal;
237 size = info.fragsize * info.fragstotal;
238 g_print ("segsize %d, segtotal %d\n", info.fragsize, info.fragstotal);
240 mmap_buf = (caddr_t) mmap (NULL, size, PROT_WRITE,
241 MAP_FILE | MAP_SHARED, obuf->fd, 0);
243 if ((caddr_t) mmap_buf == (caddr_t) - 1) {
244 perror ("mmap (write)");
248 buf->data = gst_buffer_new ();
249 GST_BUFFER_DATA (buf->data) = mmap_buf;
250 GST_BUFFER_SIZE (buf->data) = size;
251 GST_BUFFER_FLAG_SET (buf->data, GST_BUFFER_DONTFREE);
254 if (ioctl (obuf->fd, SNDCTL_DSP_SETTRIGGER, &tmp) == -1) {
255 perror ("SETTRIGGER");
259 GST_OBJECT_LOCK (obuf);
260 obuf->running = TRUE;
261 obuf->thread = g_thread_create ((GThreadFunc) gst_ossdmabuffer_func,
263 GST_OSSDMABUFFER_WAIT (obuf);
264 GST_OBJECT_UNLOCK (obuf);
270 gst_ossdmabuffer_release (GstRingBuffer * buf)
272 GstOssDMABuffer *obuf = (GstOssDMABuffer *) buf;;
274 gst_buffer_unref (buf->data);
276 GST_OBJECT_LOCK (obuf);
277 obuf->running = FALSE;
278 GST_OSSDMABUFFER_SIGNAL (obuf);
279 GST_OBJECT_UNLOCK (obuf);
281 g_thread_join (obuf->thread);
287 gst_ossdmabuffer_play (GstRingBuffer * buf)
290 GstOssDMABuffer *obuf;
292 obuf = (GstOssDMABuffer *) buf;
294 tmp = PCM_ENABLE_OUTPUT;
295 if (ioctl (obuf->fd, SNDCTL_DSP_SETTRIGGER, &tmp) == -1) {
296 perror ("SETTRIGGER");
298 GST_OSSDMABUFFER_SIGNAL (obuf);
304 gst_ossdmabuffer_stop (GstRingBuffer * buf)
307 GstOssDMABuffer *obuf;
309 obuf = (GstOssDMABuffer *) buf;
312 if (ioctl (obuf->fd, SNDCTL_DSP_SETTRIGGER, &tmp) == -1) {
313 perror ("SETTRIGGER");
315 GST_OSSDMABUFFER_WAIT (obuf);