1 /* GStreamer OSS4 audio source
2 * Copyright (C) 2007-2008 Tim-Philipp Müller <tim centricular net>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * SECTION:element-oss4src
23 * This element lets you record sound using the Open Sound System (OSS)
27 * <title>Example pipelines</title>
29 * gst-launch -v oss4src ! queue ! audioconvert ! vorbisenc ! oggmux ! filesink location=mymusic.ogg
30 * ]| will record sound from your sound card using OSS4 and encode it to an
31 * Ogg/Vorbis file (this will only work if your mixer settings are right
32 * and the right inputs areenabled etc.)
38 /* FIXME: make sure we're not doing ioctls from the app thread (e.g. via the
39 * mixer interface) while recording */
45 #include <sys/types.h>
47 #include <sys/ioctl.h>
53 #include <gst/interfaces/mixer.h>
54 #include <gst/gst-i18n-plugin.h>
56 #define NO_LEGACY_MIXER
57 #include "oss4-audio.h"
58 #include "oss4-source.h"
59 #include "oss4-property-probe.h"
60 #include "oss4-soundcard.h"
62 #define GST_OSS4_SOURCE_IS_OPEN(src) (GST_OSS4_SOURCE(src)->fd != -1)
64 GST_DEBUG_CATEGORY_EXTERN (oss4src_debug);
65 #define GST_CAT_DEFAULT oss4src_debug
67 #define DEFAULT_DEVICE NULL
68 #define DEFAULT_DEVICE_NAME NULL
77 static void gst_oss4_source_init_interfaces (GType type);
79 GST_BOILERPLATE_FULL (GstOss4Source, gst_oss4_source, GstAudioSrc,
80 GST_TYPE_AUDIO_SRC, gst_oss4_source_init_interfaces);
82 static void gst_oss4_source_get_property (GObject * object, guint prop_id,
83 GValue * value, GParamSpec * pspec);
84 static void gst_oss4_source_set_property (GObject * object, guint prop_id,
85 const GValue * value, GParamSpec * pspec);
87 static void gst_oss4_source_dispose (GObject * object);
88 static void gst_oss4_source_finalize (GstOss4Source * osssrc);
90 static GstCaps *gst_oss4_source_getcaps (GstBaseSrc * bsrc);
92 static gboolean gst_oss4_source_open (GstAudioSrc * asrc,
93 gboolean silent_errors);
94 static gboolean gst_oss4_source_open_func (GstAudioSrc * asrc);
95 static gboolean gst_oss4_source_close (GstAudioSrc * asrc);
96 static gboolean gst_oss4_source_prepare (GstAudioSrc * asrc,
97 GstRingBufferSpec * spec);
98 static gboolean gst_oss4_source_unprepare (GstAudioSrc * asrc);
99 static guint gst_oss4_source_read (GstAudioSrc * asrc, gpointer data,
101 static guint gst_oss4_source_delay (GstAudioSrc * asrc);
102 static void gst_oss4_source_reset (GstAudioSrc * asrc);
105 gst_oss4_source_base_init (gpointer g_class)
107 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
108 GstPadTemplate *templ;
110 gst_element_class_set_details_simple (element_class,
111 "OSS v4 Audio Source", "Source/Audio",
112 "Capture from a sound card via OSS version 4",
113 "Tim-Philipp Müller <tim centricular net>");
115 templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
116 gst_oss4_audio_get_template_caps ());
117 gst_element_class_add_pad_template (element_class, templ);
118 gst_object_unref (templ);
122 gst_oss4_source_class_init (GstOss4SourceClass * klass)
124 GObjectClass *gobject_class;
125 GstBaseSrcClass *gstbasesrc_class;
126 GstAudioSrcClass *gstaudiosrc_class;
128 gobject_class = (GObjectClass *) klass;
129 gstbasesrc_class = (GstBaseSrcClass *) klass;
130 gstaudiosrc_class = (GstAudioSrcClass *) klass;
132 gobject_class->dispose = gst_oss4_source_dispose;
133 gobject_class->finalize = (GObjectFinalizeFunc) gst_oss4_source_finalize;
134 gobject_class->get_property = gst_oss4_source_get_property;
135 gobject_class->set_property = gst_oss4_source_set_property;
137 gstbasesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_oss4_source_getcaps);
139 gstaudiosrc_class->open = GST_DEBUG_FUNCPTR (gst_oss4_source_open_func);
140 gstaudiosrc_class->prepare = GST_DEBUG_FUNCPTR (gst_oss4_source_prepare);
141 gstaudiosrc_class->unprepare = GST_DEBUG_FUNCPTR (gst_oss4_source_unprepare);
142 gstaudiosrc_class->close = GST_DEBUG_FUNCPTR (gst_oss4_source_close);
143 gstaudiosrc_class->read = GST_DEBUG_FUNCPTR (gst_oss4_source_read);
144 gstaudiosrc_class->delay = GST_DEBUG_FUNCPTR (gst_oss4_source_delay);
145 gstaudiosrc_class->reset = GST_DEBUG_FUNCPTR (gst_oss4_source_reset);
147 g_object_class_install_property (gobject_class, PROP_DEVICE,
148 g_param_spec_string ("device", "Device",
149 "OSS4 device (e.g. /dev/oss/hdaudio0/pcm0 or /dev/dspN) "
150 "(NULL = use first available device)",
151 DEFAULT_DEVICE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
153 g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
154 g_param_spec_string ("device-name", "Device name",
155 "Human-readable name of the sound device", DEFAULT_DEVICE_NAME,
156 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
160 gst_oss4_source_init (GstOss4Source * osssrc, GstOss4SourceClass * g_class)
164 device = g_getenv ("AUDIODEV");
166 device = DEFAULT_DEVICE;
169 osssrc->device = g_strdup (device);
170 osssrc->device_name = g_strdup (DEFAULT_DEVICE_NAME);
171 osssrc->device_name = NULL;
175 gst_oss4_source_finalize (GstOss4Source * oss)
177 g_free (oss->device);
180 g_list_free (oss->property_probe_list);
181 oss->property_probe_list = NULL;
183 G_OBJECT_CLASS (parent_class)->finalize ((GObject *) (oss));
187 gst_oss4_source_dispose (GObject * object)
189 GstOss4Source *oss = GST_OSS4_SOURCE (object);
191 if (oss->probed_caps) {
192 gst_caps_unref (oss->probed_caps);
193 oss->probed_caps = NULL;
196 G_OBJECT_CLASS (parent_class)->dispose (object);
200 gst_oss4_source_set_property (GObject * object, guint prop_id,
201 const GValue * value, GParamSpec * pspec)
205 oss = GST_OSS4_SOURCE (object);
209 GST_OBJECT_LOCK (oss);
211 g_free (oss->device);
212 oss->device = g_value_dup_string (value);
213 g_free (oss->device_name);
214 oss->device_name = NULL;
216 g_warning ("%s: can't change \"device\" property while audio source "
217 "is open", GST_OBJECT_NAME (oss));
219 GST_OBJECT_UNLOCK (oss);
222 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
228 gst_oss4_source_get_property (GObject * object, guint prop_id,
229 GValue * value, GParamSpec * pspec)
233 oss = GST_OSS4_SOURCE (object);
237 GST_OBJECT_LOCK (oss);
238 g_value_set_string (value, oss->device);
239 GST_OBJECT_UNLOCK (oss);
241 case PROP_DEVICE_NAME:
242 GST_OBJECT_LOCK (oss);
243 /* If device is set, try to retrieve the name even if we're not open */
244 if (oss->fd == -1 && oss->device != NULL) {
245 if (gst_oss4_source_open (GST_AUDIO_SRC (oss), TRUE)) {
246 g_value_set_string (value, oss->device_name);
247 gst_oss4_source_close (GST_AUDIO_SRC (oss));
251 gst_oss4_property_probe_find_device_name_nofd (GST_OBJECT (oss),
253 g_value_set_string (value, name);
257 g_value_set_string (value, oss->device_name);
260 GST_OBJECT_UNLOCK (oss);
263 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
269 gst_oss4_source_getcaps (GstBaseSrc * bsrc)
274 oss = GST_OSS4_SOURCE (bsrc);
277 caps = gst_oss4_audio_get_template_caps ();
278 } else if (oss->probed_caps) {
279 caps = gst_caps_copy (oss->probed_caps);
281 caps = gst_oss4_audio_probe_caps (GST_OBJECT (oss), oss->fd);
282 if (caps != NULL && !gst_caps_is_empty (caps)) {
283 oss->probed_caps = gst_caps_copy (caps);
290 /* note: we must not take the object lock here unless we fix up get_property */
292 gst_oss4_source_open (GstAudioSrc * asrc, gboolean silent_errors)
298 oss = GST_OSS4_SOURCE (asrc);
301 device = g_strdup (oss->device);
303 device = gst_oss4_audio_find_device (GST_OBJECT_CAST (oss));
305 /* desperate times, desperate measures */
307 device = g_strdup ("/dev/dsp0");
309 GST_INFO_OBJECT (oss, "Trying to open OSS4 device '%s'", device);
311 /* we open in non-blocking mode even if we don't really want to do writes
312 * non-blocking because we can't be sure that this is really a genuine
313 * OSS4 device with well-behaved drivers etc. We really don't want to
314 * hang forever under any circumstances. */
315 oss->fd = open (device, O_RDONLY | O_NONBLOCK, 0);
327 GST_INFO_OBJECT (oss, "Opened device");
329 /* Make sure it's OSS4. If it's old OSS, let osssink handle it */
330 if (!gst_oss4_audio_check_version (GST_OBJECT_CAST (oss), oss->fd))
333 /* now remove the non-blocking flag. */
334 mode = fcntl (oss->fd, F_GETFL);
336 if (fcntl (oss->fd, F_SETFL, mode) < 0) {
337 /* some drivers do no support unsetting the non-blocking flag, try to
338 * close/open the device then. This is racy but we error out properly. */
339 GST_WARNING_OBJECT (oss, "failed to unset O_NONBLOCK (buggy driver?), "
340 "will try to re-open device now");
341 gst_oss4_source_close (asrc);
342 if ((oss->fd = open (device, O_RDONLY, 0)) == -1)
346 oss->open_device = device;
348 /* not using ENGINEINFO here because it sometimes returns a different and
349 * less useful name than AUDIOINFO for the same device */
350 if (!gst_oss4_property_probe_find_device_name (GST_OBJECT (oss), oss->fd,
351 oss->open_device, &oss->device_name)) {
352 oss->device_name = NULL;
360 if (!silent_errors) {
361 GST_ELEMENT_ERROR (oss, RESOURCE, BUSY,
362 (_("Could not open audio device for playback. "
363 "Device is being used by another application.")), (NULL));
370 if (!silent_errors) {
371 GST_ELEMENT_ERROR (oss, RESOURCE, OPEN_READ,
372 (_("Could not open audio device for playback. "
373 "You don't have permission to open the device.")),
381 if (!silent_errors) {
382 GST_ELEMENT_ERROR (oss, RESOURCE, OPEN_READ,
383 (_("Could not open audio device for playback.")), GST_ERROR_SYSTEM);
390 gst_oss4_source_close (asrc);
391 if (!silent_errors) {
392 GST_ELEMENT_ERROR (oss, RESOURCE, OPEN_READ,
393 (_("Could not open audio device for playback. "
394 "This version of the Open Sound System is not supported by this "
395 "element.")), ("Try the 'osssink' element instead"));
402 if (!silent_errors) {
403 GST_ELEMENT_ERROR (oss, RESOURCE, SETTINGS, (NULL),
404 ("Unable to set device %s into non-blocking mode: %s",
405 oss->device, g_strerror (errno)));
413 gst_oss4_source_open_func (GstAudioSrc * asrc)
415 return gst_oss4_source_open (asrc, FALSE);
419 gst_oss4_source_free_mixer_tracks (GstOss4Source * oss)
421 g_list_foreach (oss->tracks, (GFunc) g_object_unref, NULL);
422 g_list_free (oss->tracks);
427 gst_oss4_source_close (GstAudioSrc * asrc)
431 oss = GST_OSS4_SOURCE (asrc);
434 GST_DEBUG_OBJECT (oss, "closing device");
439 oss->bytes_per_sample = 0;
441 gst_caps_replace (&oss->probed_caps, NULL);
443 g_free (oss->open_device);
444 oss->open_device = NULL;
446 g_free (oss->device_name);
447 oss->device_name = NULL;
449 gst_oss4_source_free_mixer_tracks (oss);
455 gst_oss4_source_prepare (GstAudioSrc * asrc, GstRingBufferSpec * spec)
459 oss = GST_OSS4_SOURCE (asrc);
461 if (!gst_oss4_audio_set_format (GST_OBJECT_CAST (oss), oss->fd, spec)) {
462 GST_WARNING_OBJECT (oss, "Couldn't set requested format %" GST_PTR_FORMAT,
467 oss->bytes_per_sample = spec->bytes_per_sample;
472 gst_oss4_source_unprepare (GstAudioSrc * asrc)
474 /* could do a SNDCTL_DSP_HALT, but the OSS manual recommends a close/open,
475 * since HALT won't properly reset some devices, apparently */
477 if (!gst_oss4_source_close (asrc))
480 if (!gst_oss4_source_open_func (asrc))
488 GST_DEBUG_OBJECT (asrc, "Couldn't close the audio device");
493 GST_DEBUG_OBJECT (asrc, "Couldn't reopen the audio device");
499 gst_oss4_source_read (GstAudioSrc * asrc, gpointer data, guint length)
504 oss = GST_OSS4_SOURCE_CAST (asrc);
506 n = read (oss->fd, data, length);
507 GST_LOG_OBJECT (asrc, "%u bytes, %u samples", n, n / oss->bytes_per_sample);
509 if (G_UNLIKELY (n < 0)) {
513 /* This is the most likely cause, I think */
514 GST_ELEMENT_ERROR (asrc, RESOURCE, READ,
515 (_("Recording is not supported by this audio device.")),
516 ("read: %s (device: %s) (maybe this is an output-only device?)",
517 g_strerror (errno), oss->open_device));
521 GST_ELEMENT_ERROR (asrc, RESOURCE, READ,
522 (_("Error recording from audio device.")),
523 ("read: %s (device: %s)", g_strerror (errno), oss->open_device));
533 gst_oss4_source_delay (GstAudioSrc * asrc)
535 audio_buf_info info = { 0, };
539 oss = GST_OSS4_SOURCE_CAST (asrc);
541 if (ioctl (oss->fd, SNDCTL_DSP_GETISPACE, &info) == -1) {
542 GST_LOG_OBJECT (oss, "GETISPACE failed: %s", g_strerror (errno));
546 delay = (info.fragstotal * info.fragsize) - info.bytes;
547 GST_LOG_OBJECT (oss, "fragstotal:%d, fragsize:%d, bytes:%d, delay:%d",
548 info.fragstotal, info.fragsize, info.bytes, delay);
553 gst_oss4_source_reset (GstAudioSrc * asrc)
555 /* There's nothing we can do here really: OSS can't handle access to the
556 * same device/fd from multiple threads and might deadlock or blow up in
557 * other ways if we try an ioctl SNDCTL_DSP_HALT or similar */
560 /* GstMixer interface, which we abuse here for input selection, because we
561 * don't have a proper interface for that and because that's what
562 * gnome-sound-recorder does. */
564 /* GstMixerTrack is a plain GObject, so let's just use the GLib macro here */
565 G_DEFINE_TYPE (GstOss4SourceInput, gst_oss4_source_input, GST_TYPE_MIXER_TRACK);
568 gst_oss4_source_input_class_init (GstOss4SourceInputClass * klass)
570 /* nothing to do here */
574 gst_oss4_source_input_init (GstOss4SourceInput * i)
576 /* nothing to do here */
582 gst_ossmixer_ensure_track_list (GstOssMixer * mixer)
586 g_return_if_fail (mixer->fd != -1);
588 if (mixer->tracklist)
591 /* find master volume */
592 if (mixer->devmask & SOUND_MASK_VOLUME)
593 master = SOUND_MIXER_VOLUME;
594 else if (mixer->devmask & SOUND_MASK_PCM)
595 master = SOUND_MIXER_PCM;
596 else if (mixer->devmask & SOUND_MASK_SPEAKER)
597 master = SOUND_MIXER_SPEAKER; /* doubtful... */
598 /* else: no master, so we won't set any */
600 /* build track list */
601 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
602 if (mixer->devmask & (1 << i)) {
603 GstMixerTrack *track;
604 gboolean input = FALSE, stereo = FALSE, record = FALSE;
606 /* track exists, make up capabilities */
607 if (MASK_BIT_IS_SET (mixer->stereomask, i))
609 if (MASK_BIT_IS_SET (mixer->recmask, i))
611 if (MASK_BIT_IS_SET (mixer->recdevs, i))
614 /* do we want mixer in our list? */
615 if (!((mixer->dir & GST_OSS_MIXER_CAPTURE && input == TRUE) ||
616 (mixer->dir & GST_OSS_MIXER_PLAYBACK && i != SOUND_MIXER_PCM)))
617 /* the PLAYBACK case seems hacky, but that's how 0.8 had it */
620 /* add track to list */
621 track = gst_ossmixer_track_new (mixer->fd, i, stereo ? 2 : 1,
622 (record ? GST_MIXER_TRACK_RECORD : 0) |
623 (input ? GST_MIXER_TRACK_INPUT :
624 GST_MIXER_TRACK_OUTPUT) |
625 ((master != i) ? 0 : GST_MIXER_TRACK_MASTER));
626 mixer->tracklist = g_list_append (mixer->tracklist, track);
631 /* unused with G_DISABLE_* */
632 static G_GNUC_UNUSED gboolean
633 gst_ossmixer_contains_track (GstOssMixer * mixer, GstOssMixerTrack * osstrack)
637 for (item = mixer->tracklist; item != NULL; item = item->next)
638 if (item->data == osstrack)
645 gst_ossmixer_list_tracks (GstOssMixer * mixer)
647 gst_ossmixer_ensure_track_list (mixer);
649 return (const GList *) mixer->tracklist;
653 gst_ossmixer_get_volume (GstOssMixer * mixer,
654 GstMixerTrack * track, gint * volumes)
657 GstOssMixerTrack *osstrack = GST_OSSMIXER_TRACK (track);
659 g_return_if_fail (mixer->fd != -1);
660 g_return_if_fail (gst_ossmixer_contains_track (mixer, osstrack));
662 if (track->flags & GST_MIXER_TRACK_MUTE) {
663 volumes[0] = osstrack->lvol;
664 if (track->num_channels == 2) {
665 volumes[1] = osstrack->rvol;
669 if (ioctl (mixer->fd, MIXER_READ (osstrack->track_num), &volume) < 0) {
670 g_warning ("Error getting recording device (%d) volume: %s",
671 osstrack->track_num, g_strerror (errno));
675 osstrack->lvol = volumes[0] = (volume & 0xff);
676 if (track->num_channels == 2) {
677 osstrack->rvol = volumes[1] = ((volume >> 8) & 0xff);
683 gst_ossmixer_set_mute (GstOssMixer * mixer, GstMixerTrack * track,
687 GstOssMixerTrack *osstrack = GST_OSSMIXER_TRACK (track);
689 g_return_if_fail (mixer->fd != -1);
690 g_return_if_fail (gst_ossmixer_contains_track (mixer, osstrack));
695 volume = (osstrack->lvol & 0xff);
696 if (MASK_BIT_IS_SET (mixer->stereomask, osstrack->track_num)) {
697 volume |= ((osstrack->rvol & 0xff) << 8);
701 if (ioctl (mixer->fd, MIXER_WRITE (osstrack->track_num), &volume) < 0) {
702 g_warning ("Error setting mixer recording device volume (0x%x): %s",
703 volume, g_strerror (errno));
708 track->flags |= GST_MIXER_TRACK_MUTE;
710 track->flags &= ~GST_MIXER_TRACK_MUTE;
716 gst_oss4_source_mixer_get_current_input (GstOss4Source * oss)
720 if (ioctl (oss->fd, SNDCTL_DSP_GET_RECSRC, &cur) == -1 || cur < 0)
727 gst_oss4_source_mixer_update_record_flags (GstOss4Source * oss, gint cur_route)
729 const gchar *cur_name = "";
732 for (t = oss->tracks; t != NULL; t = t->next) {
733 GstMixerTrack *track = t->data;
735 if (GST_OSS4_SOURCE_INPUT (track)->route == cur_route) {
736 if (!GST_MIXER_TRACK_HAS_FLAG (track, GST_MIXER_TRACK_RECORD)) {
737 track->flags |= GST_MIXER_TRACK_RECORD;
738 /* no point in sending a mixer-record-changes message here */
740 cur_name = track->label;
742 if (GST_MIXER_TRACK_HAS_FLAG (track, GST_MIXER_TRACK_RECORD)) {
743 track->flags &= ~GST_MIXER_TRACK_RECORD;
744 /* no point in sending a mixer-record-changes message here */
753 gst_oss4_source_mixer_list_tracks (GstMixer * mixer)
755 oss_mixer_enuminfo names = { 0, };
757 const gchar *cur_name;
758 GList *tracks = NULL;
761 g_return_val_if_fail (mixer != NULL, NULL);
762 g_return_val_if_fail (GST_IS_OSS4_SOURCE (mixer), NULL);
763 g_return_val_if_fail (GST_OSS4_SOURCE_IS_OPEN (mixer), NULL);
765 oss = GST_OSS4_SOURCE (mixer);
767 if (oss->tracks != NULL && oss->tracks_static)
770 if (ioctl (oss->fd, SNDCTL_DSP_GET_RECSRC_NAMES, &names) == -1)
771 goto get_recsrc_names_error;
773 oss->tracks_static = (names.version == 0);
775 GST_INFO_OBJECT (oss, "%d inputs (list is static: %s):", names.nvalues,
776 (oss->tracks_static) ? "yes" : "no");
778 for (i = 0; i < MIN (names.nvalues, OSS_ENUM_MAXVALUE + 1); ++i) {
779 GstMixerTrack *track;
781 track = g_object_new (GST_TYPE_OSS4_SOURCE_INPUT, NULL);
782 track->label = g_strdup (&names.strings[names.strindex[i]]);
783 track->flags = GST_MIXER_TRACK_INPUT;
784 track->num_channels = 2;
785 track->min_volume = 0;
786 track->max_volume = 100;
787 GST_OSS4_SOURCE_INPUT (track)->route = i;
789 GST_INFO_OBJECT (oss, " [%d] %s", i, track->label);
790 tracks = g_list_append (tracks, track);
793 gst_oss4_source_free_mixer_tracks (oss);
794 oss->tracks = tracks;
798 /* update RECORD flags */
799 cur = gst_oss4_source_mixer_get_current_input (oss);
800 cur_name = gst_oss4_source_mixer_update_record_flags (oss, cur);
801 GST_DEBUG_OBJECT (oss, "current input route: %d (%s)", cur, cur_name);
803 return (const GList *) oss->tracks;
806 get_recsrc_names_error:
808 GST_WARNING_OBJECT (oss, "GET_RECSRC_NAMES failed: %s", g_strerror (errno));
814 gst_oss4_source_mixer_set_volume (GstMixer * mixer, GstMixerTrack * track,
820 g_return_if_fail (mixer != NULL);
821 g_return_if_fail (track != NULL);
822 g_return_if_fail (GST_IS_MIXER_TRACK (track));
823 g_return_if_fail (GST_IS_OSS4_SOURCE (mixer));
824 g_return_if_fail (GST_OSS4_SOURCE_IS_OPEN (mixer));
826 oss = GST_OSS4_SOURCE (mixer);
828 cur = gst_oss4_source_mixer_get_current_input (oss);
829 if (cur != GST_OSS4_SOURCE_INPUT (track)->route) {
830 GST_DEBUG_OBJECT (oss, "track not selected input route, ignoring request");
834 new_vol = (volumes[1] << 8) | volumes[0];
835 if (ioctl (oss->fd, SNDCTL_DSP_SETRECVOL, &new_vol) == -1) {
836 GST_WARNING_OBJECT (oss, "SETRECVOL failed: %s", g_strerror (errno));
841 gst_oss4_source_mixer_get_volume (GstMixer * mixer, GstMixerTrack * track,
847 g_return_if_fail (mixer != NULL);
848 g_return_if_fail (GST_IS_OSS4_SOURCE (mixer));
849 g_return_if_fail (GST_OSS4_SOURCE_IS_OPEN (mixer));
851 oss = GST_OSS4_SOURCE (mixer);
853 cur = gst_oss4_source_mixer_get_current_input (oss);
854 if (cur != GST_OSS4_SOURCE_INPUT (track)->route) {
860 if (ioctl (oss->fd, SNDCTL_DSP_GETRECVOL, &vol) == -1 || vol < 0) {
861 GST_WARNING_OBJECT (oss, "GETRECVOL failed: %s", g_strerror (errno));
865 volumes[0] = MIN (100, vol & 0xff);
866 volumes[1] = MIN (100, (vol >> 8) & 0xff);
872 gst_oss4_source_mixer_set_record (GstMixer * mixer, GstMixerTrack * track,
876 const gchar *cur_name;
879 g_return_if_fail (mixer != NULL);
880 g_return_if_fail (track != NULL);
881 g_return_if_fail (GST_IS_MIXER_TRACK (track));
882 g_return_if_fail (GST_IS_OSS4_SOURCE (mixer));
883 g_return_if_fail (GST_OSS4_SOURCE_IS_OPEN (mixer));
885 oss = GST_OSS4_SOURCE (mixer);
887 cur = gst_oss4_source_mixer_get_current_input (oss);
889 /* stop recording for an input that's not selected anyway => nothing to do */
890 if (!record && cur != GST_OSS4_SOURCE_INPUT (track)->route)
893 /* select recording for an input that's already selected => nothing to do
894 * (or should we mess with the recording volume in this case maybe?) */
895 if (record && cur == GST_OSS4_SOURCE_INPUT (track)->route)
898 /* make current input stop recording: we can't really make an input stop
899 * recording, we can only select an input FOR recording, so we'll just ignore
900 * all requests to stop for now */
902 GST_WARNING_OBJECT (oss, "Can't un-select an input as such, only switch "
903 "to a different input source");
904 /* FIXME: set recording volume to 0 maybe? */
906 int new_route = GST_OSS4_SOURCE_INPUT (track)->route;
908 /* select this input for recording */
910 if (ioctl (oss->fd, SNDCTL_DSP_SET_RECSRC, &new_route) == -1) {
911 GST_WARNING_OBJECT (oss, "Could not select input %d for recording: %s",
912 new_route, g_strerror (errno));
920 cur_name = gst_oss4_source_mixer_update_record_flags (oss, cur);
921 GST_DEBUG_OBJECT (oss, "active input route: %d (%s)", cur, cur_name);
925 gst_oss4_source_mixer_set_mute (GstMixer * mixer, GstMixerTrack * track,
928 g_return_if_fail (mixer != NULL);
929 g_return_if_fail (track != NULL);
930 g_return_if_fail (GST_IS_MIXER_TRACK (track));
931 g_return_if_fail (GST_IS_OSS4_SOURCE (mixer));
932 g_return_if_fail (GST_OSS4_SOURCE_IS_OPEN (mixer));
934 /* FIXME: implement gst_oss4_source_mixer_set_mute() - what to do here? */
935 /* oss4_mixer_set_mute (mixer->mixer, track, mute); */
939 gst_oss4_source_mixer_interface_init (GstMixerClass * klass)
941 GST_MIXER_TYPE (klass) = GST_MIXER_HARDWARE;
943 klass->list_tracks = gst_oss4_source_mixer_list_tracks;
944 klass->set_volume = gst_oss4_source_mixer_set_volume;
945 klass->get_volume = gst_oss4_source_mixer_get_volume;
946 klass->set_mute = gst_oss4_source_mixer_set_mute;
947 klass->set_record = gst_oss4_source_mixer_set_record;
950 /* Implement the horror that is GstImplementsInterface */
953 gst_oss4_source_mixer_supported (GstImplementsInterface * iface,
959 g_return_val_if_fail (GST_IS_OSS4_SOURCE (iface), FALSE);
960 g_return_val_if_fail (iface_type == GST_TYPE_MIXER, FALSE);
962 oss = GST_OSS4_SOURCE (iface);
964 GST_OBJECT_LOCK (oss);
965 is_open = GST_OSS4_SOURCE_IS_OPEN (iface);
966 GST_OBJECT_UNLOCK (oss);
972 gst_oss4_source_mixer_implements_interface_init (GstImplementsInterfaceClass *
975 klass->supported = gst_oss4_source_mixer_supported;
979 gst_oss4_source_init_interfaces (GType type)
981 static const GInterfaceInfo implements_iface_info = {
982 (GInterfaceInitFunc) gst_oss4_source_mixer_implements_interface_init,
986 static const GInterfaceInfo mixer_iface_info = {
987 (GInterfaceInitFunc) gst_oss4_source_mixer_interface_init,
992 g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE,
993 &implements_iface_info);
994 g_type_add_interface_static (type, GST_TYPE_MIXER, &mixer_iface_info);
996 gst_oss4_add_property_probe_interface (type);