/* GStreamer OSS Mixer implementation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
- * gstossmixer.h: mixer interface implementation for OSS
+ * gstossmixer.c: mixer interface implementation for OSS
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
#define MASK_BIT_IS_SET(mask, bit) \
(mask & (1 << bit))
-static gboolean gst_ossmixer_supported (GstInterface *iface,
- GType iface_type);
+static void gst_ossmixer_track_class_init (GstOssMixerTrackClass *klass);
+static void gst_ossmixer_track_init (GstOssMixerTrack *track);
-static const GList * gst_ossmixer_list_tracks (GstMixer *ossmixer);
+static gboolean gst_ossmixer_supported (GstInterface *iface,
+ GType iface_type);
+static const GList *
+ gst_ossmixer_list_tracks (GstMixer *ossmixer);
+
+static void gst_ossmixer_set_volume (GstMixer *ossmixer,
+ GstMixerTrack *track,
+ gint *volumes);
+static void gst_ossmixer_get_volume (GstMixer *ossmixer,
+ GstMixerTrack *track,
+ gint *volumes);
+
+static void gst_ossmixer_set_record (GstMixer *ossmixer,
+ GstMixerTrack *track,
+ gboolean record);
+static void gst_ossmixer_set_mute (GstMixer *ossmixer,
+ GstMixerTrack *track,
+ gboolean mute);
-static void gst_ossmixer_set_volume (GstMixer *ossmixer,
- GstMixerTrack *track,
- gint *volumes);
-static void gst_ossmixer_get_volume (GstMixer *ossmixer,
- GstMixerTrack *track,
- gint *volumes);
+static const gchar *labels[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_LABELS;
+static GstMixerTrackClass *parent_class = NULL;
-static void gst_ossmixer_set_record (GstMixer *ossmixer,
- GstMixerTrack *track,
- gboolean record);
-static void gst_ossmixer_set_mute (GstMixer *ossmixer,
- GstMixerTrack *track,
- gboolean mute);
-static const gchar *labels[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_LABELS;
+GType
+gst_ossmixer_track_get_type (void)
+{
+ static GType gst_ossmixer_track_type = 0;
+
+ if (!gst_ossmixer_track_type) {
+ static const GTypeInfo ossmixer_track_info = {
+ sizeof (GstOssMixerTrackClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_ossmixer_track_class_init,
+ NULL,
+ NULL,
+ sizeof (GstOssMixerTrack),
+ 0,
+ (GInstanceInitFunc) gst_ossmixer_track_init,
+ NULL
+ };
+
+ gst_ossmixer_track_type =
+ g_type_register_static (GST_TYPE_MIXER_TRACK,
+ "GstOssMixerTrack",
+ &ossmixer_track_info, 0);
+ }
+
+ return gst_ossmixer_track_type;
+}
+
+static void
+gst_ossmixer_track_class_init (GstOssMixerTrackClass *klass)
+{
+ parent_class = g_type_class_ref (GST_TYPE_MIXER_TRACK);
+}
+
+static void
+gst_ossmixer_track_init (GstOssMixerTrack *track)
+{
+ track->lvol = track->rvol = 0;
+ track->track_num = 0;
+}
GstMixerTrack *
gst_ossmixer_track_new (GstOssElement *oss,
gint max_chans,
gint flags)
{
- GstMixerTrack *track = (GstMixerTrack *) g_new (GstOssMixerTrack, 1);
+ GstOssMixerTrack *osstrack;
+ GstMixerTrack *track;
gint volumes[2];
+ osstrack = g_object_new (GST_TYPE_OSSMIXER_TRACK, NULL);
+ track = GST_MIXER_TRACK (osstrack);
track->label = g_strdup (labels[track_num]);
track->num_channels = max_chans;
track->flags = flags;
track->min_volume = 0;
track->max_volume = 100;
- ((GstOssMixerTrack *) track)->track_num = track_num;
+ osstrack->track_num = track_num;
/* volume */
gst_ossmixer_get_volume (GST_MIXER (oss), track, volumes);
- if (max_chans == 1) {
- volumes[1] = 0;
- }
- ((GstOssMixerTrack *) track)->lvol = volumes[0];
- ((GstOssMixerTrack *) track)->rvol = volumes[1];
+ osstrack->lvol = volumes[0];
+ if (max_chans == 2)
+ osstrack->rvol = volumes[1];
return track;
}
void
-gst_ossmixer_track_free (GstMixerTrack *track)
-{
- g_free (track->label);
- g_free (track);
-}
-
-void
gst_oss_interface_init (GstInterfaceClass *klass)
{
/* default virtual functions */
return (GST_OSSELEMENT (iface)->mixer_fd != -1);
}
-static const GList *
-gst_ossmixer_list_tracks (GstMixer *mixer)
+static gboolean
+gst_ossmixer_contains_track (GstOssElement *oss,
+ GstOssMixerTrack *osstrack)
{
- GstOssElement *oss = GST_OSSELEMENT (mixer);
+ const GList *item;
- g_return_val_if_fail (oss->mixer_fd != -1, NULL);
+ for (item = oss->tracklist; item != NULL; item = item->next)
+ if (item->data == osstrack)
+ return TRUE;
+ return FALSE;
+}
+
+static const GList *
+gst_ossmixer_list_tracks (GstMixer *mixer)
+{
return (const GList *) GST_OSSELEMENT (mixer)->tracklist;
}
{
gint volume;
GstOssElement *oss = GST_OSSELEMENT (mixer);
- GstOssMixerTrack *osstrack = (GstOssMixerTrack *) track;
+ GstOssMixerTrack *osstrack = GST_OSSMIXER_TRACK (track);
+ /* assert that we're opened and that we're using a known item */
g_return_if_fail (oss->mixer_fd != -1);
+ g_return_if_fail (gst_ossmixer_contains_track (oss, osstrack));
if (track->flags & GST_MIXER_TRACK_MUTE) {
volumes[0] = osstrack->lvol;
{
gint volume;
GstOssElement *oss = GST_OSSELEMENT (mixer);
- GstOssMixerTrack *osstrack = (GstOssMixerTrack *) track;
+ GstOssMixerTrack *osstrack = GST_OSSMIXER_TRACK (track);
+ /* assert that we're opened and that we're using a known item */
g_return_if_fail (oss->mixer_fd != -1);
+ g_return_if_fail (gst_ossmixer_contains_track (oss, osstrack));
/* prepare the value for ioctl() */
if (!(track->flags & GST_MIXER_TRACK_MUTE)) {
{
int volume;
GstOssElement *oss = GST_OSSELEMENT (mixer);
- GstOssMixerTrack *osstrack = (GstOssMixerTrack *) track;
+ GstOssMixerTrack *osstrack = GST_OSSMIXER_TRACK (track);
+ /* assert that we're opened and that we're using a known item */
g_return_if_fail (oss->mixer_fd != -1);
+ g_return_if_fail (gst_ossmixer_contains_track (oss, osstrack));
if (mute) {
volume = 0;
gboolean record)
{
GstOssElement *oss = GST_OSSELEMENT (mixer);
- GstOssMixerTrack *osstrack = (GstOssMixerTrack *) track;
+ GstOssMixerTrack *osstrack = GST_OSSMIXER_TRACK (track);
+ /* assert that we're opened and that we're using a known item */
g_return_if_fail (oss->mixer_fd != -1);
+ g_return_if_fail (gst_ossmixer_contains_track (oss, osstrack));
/* if we're exclusive, then we need to unset the current one(s) */
if (oss->mixcaps & SOUND_CAP_EXCL_INPUT) {
gst_ossmixer_build_list (GstOssElement *oss)
{
gint i, devmask;
+ const GList *pads = gst_element_get_pad_list (GST_ELEMENT (oss));
+ GstPadDirection dir = GST_PAD_UNKNOWN;
+ struct mixer_info minfo;
g_return_if_fail (oss->mixer_fd == -1);
oss->mixer_fd = open (oss->mixer_dev, O_RDWR);
if (oss->mixer_fd == -1) {
- g_warning ("Failed to open mixer device %s, mixing disabled: %s",
+ /* this is valid. OSS devices don't need to expose a mixer */
+ GST_DEBUG ("Failed to open mixer device %s, mixing disabled: %s",
oss->mixer_dev, strerror (errno));
return;
}
+ /* get direction */
+ if (pads && g_list_length ((GList *) pads) == 1)
+ dir = GST_PAD_DIRECTION (GST_PAD (pads->data));
+
/* get masks */
- ioctl (oss->mixer_fd, SOUND_MIXER_READ_RECMASK, &oss->recmask);
- ioctl (oss->mixer_fd, SOUND_MIXER_READ_RECSRC, &oss->recdevs);
- ioctl (oss->mixer_fd, SOUND_MIXER_READ_STEREODEVS, &oss->stereomask);
- ioctl (oss->mixer_fd, SOUND_MIXER_READ_DEVMASK, &devmask);
- ioctl (oss->mixer_fd, SOUND_MIXER_READ_CAPS, &oss->mixcaps);
+ if (ioctl (oss->mixer_fd, SOUND_MIXER_READ_RECMASK, &oss->recmask) < 0 ||
+ ioctl (oss->mixer_fd, SOUND_MIXER_READ_RECSRC, &oss->recdevs) < 0 ||
+ ioctl (oss->mixer_fd, SOUND_MIXER_READ_STEREODEVS, &oss->stereomask) < 0 ||
+ ioctl (oss->mixer_fd, SOUND_MIXER_READ_DEVMASK, &devmask) < 0 ||
+ ioctl (oss->mixer_fd, SOUND_MIXER_READ_CAPS, &oss->mixcaps) < 0) {
+ GST_DEBUG ("Failed to get device masks - disabling mixer");
+ close (oss->mixer_fd);
+ oss->mixer_fd = -1;
+ return;
+ }
+
+ /* get name */
+ if (ioctl (oss->mixer_fd, SOUND_MIXER_INFO, &minfo) == 0) {
+ oss->device_name = g_strdup (minfo.name);
+ }
/* build track list */
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
if (MASK_BIT_IS_SET (oss->recdevs, i))
record = TRUE;
+ /* do we want this in our list? */
+ if ((dir == GST_PAD_SRC && input == FALSE) ||
+ (dir == GST_PAD_SINK && i == SOUND_MIXER_PCM))
+ continue;
+
/* add track to list */
track = gst_ossmixer_track_new (oss, i, stereo ? 2 : 1,
- (record ? GST_MIXER_TRACK_RECORD : 0) |
- (input ? GST_MIXER_TRACK_INPUT :
- GST_MIXER_TRACK_OUTPUT));
+ (record ? GST_MIXER_TRACK_RECORD : 0) |
+ (input ? GST_MIXER_TRACK_INPUT :
+ GST_MIXER_TRACK_OUTPUT));
oss->tracklist = g_list_append (oss->tracklist, track);
}
}
void
gst_ossmixer_free_list (GstOssElement *oss)
{
- g_return_if_fail (oss->mixer_fd != -1);
+ if (oss->mixer_fd == -1)
+ return;
- g_list_foreach (oss->tracklist, (GFunc) gst_ossmixer_track_free, NULL);
+ g_list_foreach (oss->tracklist, (GFunc) g_object_unref, NULL);
g_list_free (oss->tracklist);
oss->tracklist = NULL;
+ if (oss->device_name) {
+ g_free (oss->device_name);
+ oss->device_name = NULL;
+ }
+
close (oss->mixer_fd);
oss->mixer_fd = -1;
}
projects / platform / upstream / gstreamer.git / commitdiff