1 /* GStreamer 2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> 3 * Copyright (C) <2007-2008> Sebastian Dröge <sebastian.droege@collabora.co.uk> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public 16 * License along with this library; if not, write to the 17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21 22 #ifndef __AUDIO_RESAMPLE_H__ 23 #define __AUDIO_RESAMPLE_H__ 24 25 #include <gst/gst.h> 26 #include <gst/base/gstbasetransform.h> 27 #include <gst/audio/audio.h> 28 29 G_BEGIN_DECLS 30 31 #define GST_TYPE_AUDIO_RESAMPLE \ 32 (gst_audio_resample_get_type()) 33 #define GST_AUDIO_RESAMPLE(obj) \ 34 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_RESAMPLE,GstAudioResample)) 35 #define GST_AUDIO_RESAMPLE_CLASS(klass) \ 36 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_RESAMPLE,GstAudioResampleClass)) 37 #define GST_IS_AUDIO_RESAMPLE(obj) \ 38 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_RESAMPLE)) 39 #define GST_IS_AUDIO_RESAMPLE_CLASS(klass) \ 40 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_RESAMPLE)) 41 42 typedef struct _GstAudioResample GstAudioResample; 43 typedef struct _GstAudioResampleClass GstAudioResampleClass; 44 45 /** 46 * GstAudioResample: 47 * 48 * Opaque data structure. 49 */ 50 struct _GstAudioResample { 51 GstBaseTransform element; 52 53 /* <private> */ 54 gboolean need_discont; 55 56 GstClockTime t0; 57 guint64 in_offset0; 58 guint64 out_offset0; 59 guint64 samples_in; 60 guint64 samples_out; 61 62 guint64 num_gap_samples; 63 guint64 num_nongap_samples; 64 65 /* properties */ 66 GstAudioResamplerMethod method; 67 gint quality; 68 GstAudioResamplerFilterMode sinc_filter_mode; 69 guint32 sinc_filter_auto_threshold; 70 GstAudioResamplerFilterInterpolation sinc_filter_interpolation; 71 72 /* state */ 73 GstAudioInfo in; 74 GstAudioInfo out; 75 GstAudioConverter *converter; 76 }; 77 78 struct _GstAudioResampleClass { 79 GstBaseTransformClass parent_class; 80 }; 81 82 GType gst_audio_resample_get_type(void); 83 84 G_END_DECLS 85 86 #endif /* __AUDIO_RESAMPLE_H__ */ 87