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1 /* |
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2 * GStreamer |
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3 * Copyright (C) 2008 Wim Taymans <wim.taymans@gmail.com> |
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4 * |
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5 * This library is free software; you can redistribute it and/or |
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6 * modify it under the terms of the GNU Library General Public |
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7 * License as published by the Free Software Foundation; either |
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8 * version 2 of the License, or (at your option) any later version. |
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9 * |
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10 * This library is distributed in the hope that it will be useful, |
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 * Library General Public License for more details. |
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14 * |
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15 * You should have received a copy of the GNU Library General Public |
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16 * License along with this library; if not, write to the |
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17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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18 * Boston, MA 02111-1307, USA. |
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19 */ |
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20 |
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21 #ifndef __GST_AUDIO_KARAOKE_H__ |
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22 #define __GST_AUDIO_KARAOKE_H__ |
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23 |
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24 #include <gst/gst.h> |
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25 #include <gst/gst_global.h> |
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26 #include <gst/base/gstbasetransform.h> |
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27 #include <gst/audio/audio.h> |
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28 #include <gst/audio/gstaudiofilter.h> |
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29 |
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30 G_BEGIN_DECLS |
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31 #define GST_TYPE_AUDIO_KARAOKE (gst_audio_karaoke_get_type()) |
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32 #define GST_AUDIO_KARAOKE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_KARAOKE,GstAudioKaraoke)) |
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33 #define GST_IS_AUDIO_KARAOKE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_KARAOKE)) |
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34 #define GST_AUDIO_KARAOKE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_KARAOKE,GstAudioKaraokeClass)) |
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35 #define GST_IS_AUDIO_KARAOKE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_KARAOKE)) |
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36 #define GST_AUDIO_KARAOKE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_KARAOKE,GstAudioKaraokeClass)) |
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37 typedef struct _GstAudioKaraoke GstAudioKaraoke; |
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38 typedef struct _GstAudioKaraokeClass GstAudioKaraokeClass; |
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39 |
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40 typedef void (*GstAudioKaraokeProcessFunc) (GstAudioKaraoke *, guint8 *, guint); |
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41 |
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42 struct _GstAudioKaraoke |
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43 { |
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44 GstAudioFilter audiofilter; |
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45 |
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46 gint channels; |
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47 gint rate; |
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48 |
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49 /* properties */ |
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50 gfloat level; |
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51 gfloat mono_level; |
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52 gfloat filter_band; |
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53 gfloat filter_width; |
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54 |
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55 /* filter coef */ |
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56 gfloat A, B, C; |
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57 gfloat y1, y2; |
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58 |
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59 /* < private > */ |
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60 GstAudioKaraokeProcessFunc process; |
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61 }; |
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62 |
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63 struct _GstAudioKaraokeClass |
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64 { |
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65 GstAudioFilterClass parent; |
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66 }; |
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67 #ifdef __SYMBIAN32__ |
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68 IMPORT_C |
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69 #endif |
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70 |
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71 |
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72 GType gst_audio_karaoke_get_type (void); |
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73 |
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74 G_END_DECLS |
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75 #endif /* __GST_AUDIO_KARAOKE_H__ */ |