1 /* ALSA mixer track object. |
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2 * Copyright (C) 2003 Leif Johnson <leif@ambient.2y.net> |
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3 * |
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4 * This library is free software; you can redistribute it and/or |
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5 * modify it under the terms of the GNU Library General Public |
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6 * License as published by the Free Software Foundation; either |
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7 * version 2 of the License, or (at your option) any later version. |
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8 * |
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9 * This library is distributed in the hope that it will be useful, |
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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12 * Library General Public License for more details. |
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13 * |
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14 * You should have received a copy of the GNU Library General Public |
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15 * License along with this library; if not, write to the Free |
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16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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17 */ |
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18 |
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19 |
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20 #ifndef __GST_ALSA_MIXER_TRACK_H__ |
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21 #define __GST_ALSA_MIXER_TRACK_H__ |
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22 |
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23 |
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24 #include "gstalsa.h" |
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25 #include <gst/interfaces/mixertrack.h> |
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26 |
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27 |
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28 G_BEGIN_DECLS |
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29 |
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30 |
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31 #define GST_ALSA_MIXER_TRACK_TYPE (gst_alsa_mixer_track_get_type ()) |
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32 #define GST_ALSA_MIXER_TRACK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_MIXER_TRACK,GstAlsaMixerTrack)) |
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33 #define GST_ALSA_MIXER_TRACK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_MIXER_TRACK,GstAlsaMixerTrackClass)) |
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34 #define GST_IS_ALSA_MIXER_TRACK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSA_MIXER_TRACK)) |
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35 #define GST_IS_ALSA_MIXER_TRACK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_MIXER_TRACK)) |
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36 #define GST_TYPE_ALSA_MIXER_TRACK (gst_alsa_mixer_track_get_type()) |
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37 |
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38 typedef struct _GstAlsaMixerTrack GstAlsaMixerTrack; |
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39 typedef struct _GstAlsaMixerTrackClass GstAlsaMixerTrackClass; |
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40 |
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41 #define GST_ALSA_MIXER_TRACK_VOLUME (1<<0) /* common volume */ |
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42 #define GST_ALSA_MIXER_TRACK_PVOLUME (1<<1) |
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43 #define GST_ALSA_MIXER_TRACK_CVOLUME (1<<2) |
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44 #define GST_ALSA_MIXER_TRACK_SWITCH (1<<3) /* common switch */ |
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45 #define GST_ALSA_MIXER_TRACK_PSWITCH (1<<4) |
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46 #define GST_ALSA_MIXER_TRACK_CSWITCH (1<<5) |
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47 #define GST_ALSA_MIXER_TRACK_CSWITCH_EXCL (1<<6) |
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48 |
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49 #define GST_ALSA_MAX_CHANNELS (SND_MIXER_SCHN_LAST+1) |
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50 |
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51 struct _GstAlsaMixerTrack { |
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52 GstMixerTrack parent; |
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53 snd_mixer_elem_t *element; /* the ALSA mixer element for this track */ |
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54 GstAlsaMixerTrack *shared_mute; |
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55 gint track_num; |
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56 guint32 alsa_flags; /* alsa track capabilities */ |
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57 gint alsa_channels; |
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58 gint capture_group; |
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59 gint volumes[GST_ALSA_MAX_CHANNELS]; |
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60 }; |
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61 |
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62 struct _GstAlsaMixerTrackClass { |
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63 GstMixerTrackClass parent; |
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64 }; |
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65 |
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66 GType gst_alsa_mixer_track_get_type (void); |
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67 GstMixerTrack * gst_alsa_mixer_track_new (snd_mixer_elem_t * element, |
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68 gint num, |
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69 gint track_num, |
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70 gint flags, |
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71 gboolean sw, /* is simple switch? */ |
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72 GstAlsaMixerTrack * shared_mute_track, |
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73 gboolean label_append_capture); |
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74 void gst_alsa_mixer_track_update (GstAlsaMixerTrack * alsa_track); |
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75 |
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76 G_END_DECLS |
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77 |
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78 |
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79 #endif /* __GST_ALSA_MIXER_TRACK_H__ */ |
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