1 /* GStreamer OSS Mixer implementation
2 * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 * gstossmixer.c: mixer interface implementation for OSS
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
32 #include <sys/ioctl.h>
34 #ifdef HAVE_OSS_INCLUDE_IN_SYS
35 #include <sys/soundcard.h>
38 #ifdef HAVE_OSS_INCLUDE_IN_ROOT
39 #include <soundcard.h>
42 #include <machine/soundcard.h>
44 #endif /* HAVE_OSS_INCLUDE_IN_ROOT */
46 #endif /* HAVE_OSS_INCLUDE_IN_SYS */
48 #include "gstossmixer.h"
50 #define MASK_BIT_IS_SET(mask, bit) \
53 static void gst_ossmixer_track_class_init (GstOssMixerTrackClass * klass);
54 static void gst_ossmixer_track_init (GstOssMixerTrack * track);
56 static gboolean gst_ossmixer_supported (GstImplementsInterface * iface,
58 static const GList *gst_ossmixer_list_tracks (GstMixer * ossmixer);
60 static void gst_ossmixer_set_volume (GstMixer * ossmixer,
61 GstMixerTrack * track, gint * volumes);
62 static void gst_ossmixer_get_volume (GstMixer * ossmixer,
63 GstMixerTrack * track, gint * volumes);
65 static void gst_ossmixer_set_record (GstMixer * ossmixer,
66 GstMixerTrack * track, gboolean record);
67 static void gst_ossmixer_set_mute (GstMixer * ossmixer,
68 GstMixerTrack * track, gboolean mute);
70 static const gchar **labels = NULL;
71 static GstMixerTrackClass *parent_class = NULL;
73 /* three functions: firstly, OSS has the nasty habit of inserting
74 * spaces in the labels, we want to get rid of them. Secondly,
75 * i18n is impossible with OSS' way of providing us with mixer
76 * labels, so we make a 'given' list of i18n'ed labels. Since
77 * i18n doesn't actually work, we fake it (FIXME). Thirdly, I
78 * personally don't like the "1337" names that OSS gives to their
79 * labels ("Vol", "Mic", "Rec"), I'd rather see full names. */
86 gchar *origs[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_LABELS;
89 gchar *given, *wanted;
93 /* Note: this list is simply ripped from soundcard.h. For
94 * some people, some values might be missing (3D surround,
95 * etc.) - feel free to add them. That's the reason why
96 * I'm doing this in such a horribly complicated way. */
102 "Trebl", _("Treble")}
108 "Spkr ", _("Speaker")}
110 "Line ", _("Line-in")}
112 "Mic ", _("Microphone")}
122 "IGain", _("In-gain")}
124 "OGain", _("Out-gain")}
126 "Line1", _("Line-1")}
128 "Line2", _("Line-2")}
130 "Line3", _("Line-3")}
132 "Digital1", _("Digital-1")}
134 "Digital2", _("Digital-2")}
136 "Digital3", _("Digital-3")}
138 "PhoneIn", _("Phone-in")}
140 "PhoneOut", _("Phone-out")}
146 "Monitor", _("Monitor")}
151 labels = g_malloc (sizeof (gchar *) * SOUND_MIXER_NRDEVICES);
153 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
154 for (pos = 0; cases[pos].given != NULL; pos++) {
155 if (!strcmp (cases[pos].given, origs[i])) {
156 labels[i] = g_strdup (cases[pos].wanted);
160 if (cases[pos].given == NULL)
161 labels[i] = g_strdup (origs[i]);
166 gst_ossmixer_track_get_type (void)
168 static GType gst_ossmixer_track_type = 0;
170 if (!gst_ossmixer_track_type) {
171 static const GTypeInfo ossmixer_track_info = {
172 sizeof (GstOssMixerTrackClass),
175 (GClassInitFunc) gst_ossmixer_track_class_init,
178 sizeof (GstOssMixerTrack),
180 (GInstanceInitFunc) gst_ossmixer_track_init,
184 gst_ossmixer_track_type =
185 g_type_register_static (GST_TYPE_MIXER_TRACK,
186 "GstOssMixerTrack", &ossmixer_track_info, 0);
189 return gst_ossmixer_track_type;
193 gst_ossmixer_track_class_init (GstOssMixerTrackClass * klass)
195 parent_class = g_type_class_ref (GST_TYPE_MIXER_TRACK);
199 gst_ossmixer_track_init (GstOssMixerTrack * track)
201 track->lvol = track->rvol = 0;
202 track->track_num = 0;
206 gst_ossmixer_track_new (GstOssElement * oss,
207 gint track_num, gint max_chans, gint flags)
209 GstOssMixerTrack *osstrack;
210 GstMixerTrack *track;
216 osstrack = g_object_new (GST_TYPE_OSSMIXER_TRACK, NULL);
217 track = GST_MIXER_TRACK (osstrack);
218 track->label = g_strdup (labels[track_num]);
219 track->num_channels = max_chans;
220 track->flags = flags;
221 track->min_volume = 0;
222 track->max_volume = 100;
223 osstrack->track_num = track_num;
226 if (ioctl (oss->mixer_fd, MIXER_READ (osstrack->track_num), &volume) < 0) {
227 g_warning ("Error getting device (%d) volume: %s",
228 osstrack->track_num, strerror (errno));
231 osstrack->lvol = (volume & 0xff);
232 if (track->num_channels == 2) {
233 osstrack->rvol = ((volume >> 8) & 0xff);
240 gst_oss_interface_init (GstImplementsInterfaceClass * klass)
242 /* default virtual functions */
243 klass->supported = gst_ossmixer_supported;
247 gst_ossmixer_interface_init (GstMixerClass * klass)
249 GST_MIXER_TYPE (klass) = GST_MIXER_HARDWARE;
251 /* default virtual functions */
252 klass->list_tracks = gst_ossmixer_list_tracks;
253 klass->set_volume = gst_ossmixer_set_volume;
254 klass->get_volume = gst_ossmixer_get_volume;
255 klass->set_mute = gst_ossmixer_set_mute;
256 klass->set_record = gst_ossmixer_set_record;
260 gst_ossmixer_supported (GstImplementsInterface * iface, GType iface_type)
262 g_assert (iface_type == GST_TYPE_MIXER);
264 return (GST_OSSELEMENT (iface)->mixer_fd != -1);
268 gst_ossmixer_contains_track (GstOssElement * oss, GstOssMixerTrack * osstrack)
272 for (item = oss->tracklist; item != NULL; item = item->next)
273 if (item->data == osstrack)
280 gst_ossmixer_list_tracks (GstMixer * mixer)
282 return (const GList *) GST_OSSELEMENT (mixer)->tracklist;
286 gst_ossmixer_get_volume (GstMixer * mixer,
287 GstMixerTrack * track, gint * volumes)
290 GstOssElement *oss = GST_OSSELEMENT (mixer);
291 GstOssMixerTrack *osstrack = GST_OSSMIXER_TRACK (track);
293 /* assert that we're opened and that we're using a known item */
294 g_return_if_fail (oss->mixer_fd != -1);
295 g_return_if_fail (gst_ossmixer_contains_track (oss, osstrack));
297 if (track->flags & GST_MIXER_TRACK_MUTE) {
298 volumes[0] = osstrack->lvol;
299 if (track->num_channels == 2) {
300 volumes[1] = osstrack->rvol;
304 if (ioctl (oss->mixer_fd, MIXER_READ (osstrack->track_num), &volume) < 0) {
305 g_warning ("Error getting recording device (%d) volume: %s",
306 osstrack->track_num, strerror (errno));
310 osstrack->lvol = volumes[0] = (volume & 0xff);
311 if (track->num_channels == 2) {
312 osstrack->rvol = volumes[1] = ((volume >> 8) & 0xff);
318 gst_ossmixer_set_volume (GstMixer * mixer,
319 GstMixerTrack * track, gint * volumes)
322 GstOssElement *oss = GST_OSSELEMENT (mixer);
323 GstOssMixerTrack *osstrack = GST_OSSMIXER_TRACK (track);
325 /* assert that we're opened and that we're using a known item */
326 g_return_if_fail (oss->mixer_fd != -1);
327 g_return_if_fail (gst_ossmixer_contains_track (oss, osstrack));
329 /* prepare the value for ioctl() */
330 if (!(track->flags & GST_MIXER_TRACK_MUTE)) {
331 volume = (volumes[0] & 0xff);
332 if (track->num_channels == 2) {
333 volume |= ((volumes[1] & 0xff) << 8);
337 if (ioctl (oss->mixer_fd, MIXER_WRITE (osstrack->track_num), &volume) < 0) {
338 g_warning ("Error setting recording device (%d) volume (0x%x): %s",
339 osstrack->track_num, volume, strerror (errno));
344 osstrack->lvol = volumes[0];
345 if (track->num_channels == 2) {
346 osstrack->rvol = volumes[1];
351 gst_ossmixer_set_mute (GstMixer * mixer, GstMixerTrack * track, gboolean mute)
354 GstOssElement *oss = GST_OSSELEMENT (mixer);
355 GstOssMixerTrack *osstrack = GST_OSSMIXER_TRACK (track);
357 /* assert that we're opened and that we're using a known item */
358 g_return_if_fail (oss->mixer_fd != -1);
359 g_return_if_fail (gst_ossmixer_contains_track (oss, osstrack));
364 volume = (osstrack->lvol & 0xff);
365 if (MASK_BIT_IS_SET (oss->stereomask, osstrack->track_num)) {
366 volume |= ((osstrack->rvol & 0xff) << 8);
370 if (ioctl (oss->mixer_fd, MIXER_WRITE (osstrack->track_num), &volume) < 0) {
371 g_warning ("Error setting mixer recording device volume (0x%x): %s",
372 volume, strerror (errno));
377 track->flags |= GST_MIXER_TRACK_MUTE;
379 track->flags &= ~GST_MIXER_TRACK_MUTE;
384 gst_ossmixer_set_record (GstMixer * mixer,
385 GstMixerTrack * track, gboolean record)
387 GstOssElement *oss = GST_OSSELEMENT (mixer);
388 GstOssMixerTrack *osstrack = GST_OSSMIXER_TRACK (track);
390 /* assert that we're opened and that we're using a known item */
391 g_return_if_fail (oss->mixer_fd != -1);
392 g_return_if_fail (gst_ossmixer_contains_track (oss, osstrack));
394 /* if there's nothing to do... */
395 if ((record && GST_MIXER_TRACK_HAS_FLAG (track, GST_MIXER_TRACK_RECORD)) ||
396 (!record && !GST_MIXER_TRACK_HAS_FLAG (track, GST_MIXER_TRACK_RECORD)))
399 /* if we're exclusive, then we need to unset the current one(s) */
400 if (oss->mixcaps & SOUND_CAP_EXCL_INPUT) {
403 for (track = oss->tracklist; track != NULL; track = track->next) {
404 GstMixerTrack *turn = (GstMixerTrack *) track->data;
406 turn->flags &= ~GST_MIXER_TRACK_RECORD;
411 /* set new record bit, if needed */
413 oss->recdevs |= (1 << osstrack->track_num);
415 oss->recdevs &= ~(1 << osstrack->track_num);
418 /* set it to the device */
419 if (ioctl (oss->mixer_fd, SOUND_MIXER_WRITE_RECSRC, &oss->recdevs) < 0) {
420 g_warning ("Error setting mixer recording devices (0x%x): %s",
421 oss->recdevs, strerror (errno));
426 track->flags |= GST_MIXER_TRACK_RECORD;
428 track->flags &= ~GST_MIXER_TRACK_RECORD;
433 gst_ossmixer_build_list (GstOssElement * oss)
435 gint i, devmask, master = -1;
436 const GList *pads = gst_element_get_pad_list (GST_ELEMENT (oss));
437 GstPadDirection dir = GST_PAD_UNKNOWN;
439 #ifdef SOUND_MIXER_INFO
440 struct mixer_info minfo;
443 g_return_if_fail (oss->mixer_fd == -1);
445 oss->mixer_fd = open (oss->mixer_dev, O_RDWR);
446 if (oss->mixer_fd == -1) {
447 /* this is valid. OSS devices don't need to expose a mixer */
448 GST_DEBUG ("Failed to open mixer device %s, mixing disabled: %s",
449 oss->mixer_dev, strerror (errno));
454 if (pads && g_list_length ((GList *) pads) == 1)
455 dir = GST_PAD_DIRECTION (GST_PAD (pads->data));
458 if (ioctl (oss->mixer_fd, SOUND_MIXER_READ_RECMASK, &oss->recmask) < 0 ||
459 ioctl (oss->mixer_fd, SOUND_MIXER_READ_RECSRC, &oss->recdevs) < 0 ||
460 ioctl (oss->mixer_fd, SOUND_MIXER_READ_STEREODEVS, &oss->stereomask) < 0
461 || ioctl (oss->mixer_fd, SOUND_MIXER_READ_DEVMASK, &devmask) < 0
462 || ioctl (oss->mixer_fd, SOUND_MIXER_READ_CAPS, &oss->mixcaps) < 0) {
463 GST_DEBUG ("Failed to get device masks - disabling mixer");
464 close (oss->mixer_fd);
470 #ifdef SOUND_MIXER_INFO
471 if (ioctl (oss->mixer_fd, SOUND_MIXER_INFO, &minfo) == 0) {
472 oss->device_name = g_strdup (minfo.name);
475 oss->device_name = g_strdup ("Unknown");
478 /* find master volume */
479 if (devmask & SOUND_MASK_VOLUME)
480 master = SOUND_MIXER_VOLUME;
481 else if (devmask & SOUND_MASK_PCM)
482 master = SOUND_MIXER_PCM;
483 else if (devmask & SOUND_MASK_SPEAKER)
484 master = SOUND_MIXER_SPEAKER; /* doubtful... */
485 /* else: no master, so we won't set any */
487 /* build track list */
488 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
489 if (devmask & (1 << i)) {
490 GstMixerTrack *track;
491 gboolean input = FALSE, stereo = FALSE, record = FALSE;
493 /* track exists, make up capabilities */
494 if (MASK_BIT_IS_SET (oss->stereomask, i))
496 if (MASK_BIT_IS_SET (oss->recmask, i))
498 if (MASK_BIT_IS_SET (oss->recdevs, i))
501 /* do we want this in our list? */
502 if ((dir == GST_PAD_SRC && input == FALSE) ||
503 (dir == GST_PAD_SINK && i != SOUND_MIXER_PCM))
506 /* add track to list */
507 track = gst_ossmixer_track_new (oss, i, stereo ? 2 : 1,
508 (record ? GST_MIXER_TRACK_RECORD : 0) |
509 (input ? GST_MIXER_TRACK_INPUT :
510 GST_MIXER_TRACK_OUTPUT) |
511 ((master != i) ? 0 : GST_MIXER_TRACK_MASTER));
512 oss->tracklist = g_list_append (oss->tracklist, track);
518 gst_ossmixer_free_list (GstOssElement * oss)
520 if (oss->mixer_fd == -1)
523 g_list_foreach (oss->tracklist, (GFunc) g_object_unref, NULL);
524 g_list_free (oss->tracklist);
525 oss->tracklist = NULL;
527 if (oss->device_name) {
528 g_free (oss->device_name);
529 oss->device_name = NULL;
532 close (oss->mixer_fd);