From add17e34f0b5d163bd09e02b95c19ec6b9473945 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tim-Philipp=20M=C3=BCller?= Date: Sat, 3 Feb 2007 23:35:26 +0000 Subject: Fix up to use the newly ported (actually working) GstAudioFilter. Original commit message from CVS: * configure.ac: * gst/equalizer/Makefile.am: * gst/equalizer/gstiirequalizer.c: (gst_iir_equalizer_base_init), (gst_iir_equalizer_class_init), (gst_iir_equalizer_init), (setup_filter), (gst_iir_equalizer_compute_frequencies), (gst_iir_equalizer_set_property), (gst_iir_equalizer_get_property), (gst_iir_equalizer_transform_ip), (gst_iir_equalizer_setup), (plugin_init): * gst/equalizer/gstiirequalizer.h: Fix up to use the newly ported (actually working) GstAudioFilter. Bump core/base requirements to CVS for this. * tests/icles/.cvsignore: * tests/icles/Makefile.am: * tests/icles/equalizer-test.c: (check_bus), (equalizer_set_band_value), (equalizer_set_all_band_values), (equalizer_set_band_value_and_wait), (equalizer_set_all_band_values_and_wait), (do_slider_fiddling), (main): Add brain-dead interactive test for equalizer. --- gst/equalizer/gstiirequalizer.h | 77 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 gst/equalizer/gstiirequalizer.h (limited to 'gst/equalizer/gstiirequalizer.h') diff --git a/gst/equalizer/gstiirequalizer.h b/gst/equalizer/gstiirequalizer.h new file mode 100644 index 00000000..2193369b --- /dev/null +++ b/gst/equalizer/gstiirequalizer.h @@ -0,0 +1,77 @@ +/* GStreamer IIR equalizer + * Copyright (C) <2004> Benjamin Otte + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __GST_IIR_EQUALIZER__ +#define __GST_IIR_EQUALIZER__ + +#include +#include + +typedef struct _GstIirEqualizer GstIirEqualizer; +typedef struct _GstIirEqualizerClass GstIirEqualizerClass; + +#define GST_TYPE_IIR_EQUALIZER \ + (gst_iir_equalizer_get_type()) +#define GST_IIR_EQUALIZER(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_IIR_EQUALIZER,GstIirEqualizer)) +#define GST_IIR_EQUALIZER_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_IIR_EQUALIZER,GstIirEqualizerClass)) +#define GST_IS_IIR_EQUALIZER(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_IIR_EQUALIZER)) +#define GST_IS_IIR_EQUALIZER_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_IIR_EQUALIZER)) + +#define LOWEST_FREQ (20.0) +#define HIGHEST_FREQ (20000.0) + +typedef void (*ProcessFunc) (GstIirEqualizer * eq, guint8 * data, guint size, + guint channels); + +typedef struct +{ + gdouble alpha; /* IIR coefficients for outputs */ + gdouble beta; /* IIR coefficients for inputs */ + gdouble gamma; /* IIR coefficients for inputs */ +} SecondOrderFilter; + +struct _GstIirEqualizer +{ + GstAudioFilter audiofilter; + + /*< private >*/ + + /* properties */ + guint freq_count; + gdouble band_width; + gdouble *freqs; + gdouble *values; + + /* data */ + SecondOrderFilter *filter; + gpointer history; + ProcessFunc process; + guint history_size; +}; + +struct _GstIirEqualizerClass +{ + GstAudioFilterClass audiofilter_class; +}; + +#endif /* __GST_IIR_EQUALIZER__ */ -- cgit v1.2.1