From 4c7c4c00dacff24aaef55b46a8bc31687d833ca7 Mon Sep 17 00:00:00 2001 From: Sebastian Dröge Date: Mon, 5 Jan 2009 10:13:29 +0000 Subject: gst/audiofx/: Implement a base class for IIR filters. Original commit message from CVS: * gst/audiofx/Makefile.am: * gst/audiofx/audiofxbaseiirfilter.c: (gst_audio_fx_base_iir_filter_base_init), (gst_audio_fx_base_iir_filter_dispose), (gst_audio_fx_base_iir_filter_class_init), (gst_audio_fx_base_iir_filter_init), (gst_audio_fx_base_iir_filter_calculate_gain), (gst_audio_fx_base_iir_filter_set_coefficients), (gst_audio_fx_base_iir_filter_setup), (process), (gst_audio_fx_base_iir_filter_transform_ip), (gst_audio_fx_base_iir_filter_stop): * gst/audiofx/audiofxbaseiirfilter.h: Implement a base class for IIR filters. * gst/audiofx/audiochebband.c: (gst_audio_cheb_band_base_init), (gst_audio_cheb_band_class_init), (gst_audio_cheb_band_init), (generate_coefficients), (gst_audio_cheb_band_set_property), (gst_audio_cheb_band_setup): * gst/audiofx/audiochebband.h: * gst/audiofx/audiocheblimit.c: (gst_audio_cheb_limit_base_init), (gst_audio_cheb_limit_class_init), (gst_audio_cheb_limit_init), (generate_coefficients), (gst_audio_cheb_limit_set_property), (gst_audio_cheb_limit_setup): * gst/audiofx/audiocheblimit.h: Use the IIR filter base class for the chebyshev filters. --- gst/audiofx/audiocheblimit.h | 31 ++++++++----------------------- 1 file changed, 8 insertions(+), 23 deletions(-) (limited to 'gst/audiofx/audiocheblimit.h') diff --git a/gst/audiofx/audiocheblimit.h b/gst/audiofx/audiocheblimit.h index c2fe6c2e..491f7494 100644 --- a/gst/audiofx/audiocheblimit.h +++ b/gst/audiofx/audiocheblimit.h @@ -1,6 +1,6 @@ /* * GStreamer - * Copyright (C) 2007 Sebastian Dröge + * Copyright (C) 2007-2009 Sebastian Dröge * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public @@ -26,53 +26,38 @@ #include #include +#include "audiofxbaseiirfilter.h" + G_BEGIN_DECLS + #define GST_TYPE_AUDIO_CHEB_LIMIT (gst_audio_cheb_limit_get_type()) #define GST_AUDIO_CHEB_LIMIT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_CHEB_LIMIT,GstAudioChebLimit)) #define GST_IS_AUDIO_CHEB_LIMIT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_CHEB_LIMIT)) #define GST_AUDIO_CHEB_LIMIT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_CHEB_LIMIT,GstAudioChebLimitClass)) #define GST_IS_AUDIO_CHEB_LIMIT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_CHEB_LIMIT)) #define GST_AUDIO_CHEB_LIMIT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_CHEB_LIMIT,GstAudioChebLimitClass)) + typedef struct _GstAudioChebLimit GstAudioChebLimit; typedef struct _GstAudioChebLimitClass GstAudioChebLimitClass; -typedef void (*GstAudioChebLimitProcessFunc) (GstAudioChebLimit *, guint8 *, guint); - -typedef struct -{ - gdouble *x; - gint x_pos; - gdouble *y; - gint y_pos; -} GstAudioChebLimitChannelCtx; - struct _GstAudioChebLimit { - GstAudioFilter audiofilter; + GstAudioFXBaseIIRFilter parent; gint mode; gint type; gint poles; gfloat cutoff; gfloat ripple; - - /* < private > */ - GstAudioChebLimitProcessFunc process; - - gboolean have_coeffs; - gdouble *a; - gint num_a; - gdouble *b; - gint num_b; - GstAudioChebLimitChannelCtx *channels; }; struct _GstAudioChebLimitClass { - GstAudioFilterClass parent; + GstAudioFXBaseIIRFilterClass parent; }; GType gst_audio_cheb_limit_get_type (void); G_END_DECLS + #endif /* __GST_AUDIO_CHEB_LIMIT_H__ */ -- cgit