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 (gst_audio_resample_get_type()) 32 G_DECLARE_FINAL_TYPE (GstAudioResample, gst_audio_resample, GST, AUDIO_RESAMPLE, 33 GstBaseTransform) 34 35 /** 36 * GstAudioResample: 37 * 38 * Opaque data structure. 39 */ 40 struct _GstAudioResample { 41 GstBaseTransform element; 42 43 /* <private> */ 44 gboolean need_discont; 45 46 GstClockTime t0; 47 guint64 in_offset0; 48 guint64 out_offset0; 49 guint64 samples_in; 50 guint64 samples_out; 51 52 guint64 num_gap_samples; 53 guint64 num_nongap_samples; 54 55 /* properties */ 56 GstAudioResamplerMethod method; 57 gint quality; 58 GstAudioResamplerFilterMode sinc_filter_mode; 59 guint32 sinc_filter_auto_threshold; 60 GstAudioResamplerFilterInterpolation sinc_filter_interpolation; 61 62 /* state */ 63 GstAudioInfo in; 64 GstAudioInfo out; 65 GstAudioConverter *converter; 66 }; 67 GST_ELEMENT_REGISTER_DECLARE (audioresample); 68 69 G_END_DECLS 70 71 #endif /* __AUDIO_RESAMPLE_H__ */ 72