From 1714161b11e2e4a919a315cecd93f8dd41ee29f7 Mon Sep 17 00:00:00 2001 From: Stefan Kost Date: Wed, 14 Mar 2007 14:48:08 +0000 Subject: gst/equalizer/: Add 3 and 10 band version and add missing gst_object_sync_values. Original commit message from CVS: * gst/equalizer/Makefile.am: * gst/equalizer/gstiirequalizer.c: (_do_init), (gst_iir_equalizer_band_set_property), (gst_iir_equalizer_band_class_init), (gst_iir_equalizer_band_get_type), (gst_iir_equalizer_child_proxy_get_child_by_index), (gst_iir_equalizer_child_proxy_get_children_count), (gst_iir_equalizer_child_proxy_interface_init), (setup_filter), (gst_iir_equalizer_compute_frequencies), (gst_iir_equalizer_transform_ip), (plugin_init): * gst/equalizer/gstiirequalizer10bands.c: (gst_iir_equalizer_10bands_base_init), (gst_iir_equalizer_10bands_class_init), (gst_iir_equalizer_10bands_init), (gst_iir_equalizer_10bands_set_property), (gst_iir_equalizer_10bands_get_property): * gst/equalizer/gstiirequalizer10bands.h: * gst/equalizer/gstiirequalizer3bands.c: (gst_iir_equalizer_3bands_base_init), (gst_iir_equalizer_3bands_class_init), (gst_iir_equalizer_3bands_init), (gst_iir_equalizer_3bands_set_property), (gst_iir_equalizer_3bands_get_property): * gst/equalizer/gstiirequalizer3bands.h: * gst/equalizer/gstiirequalizernbands.c: (gst_iir_equalizer_nbands_base_init), (gst_iir_equalizer_nbands_init): Add 3 and 10 band version and add missing gst_object_sync_values. * gst/spectrum/gstspectrum.c: (gst_spectrum_event), (gst_spectrum_transform_ip): Add some comments about float support. --- gst/equalizer/gstiirequalizer3bands.c | 151 ++++++++++++++++++++++++++++++++++ 1 file changed, 151 insertions(+) create mode 100644 gst/equalizer/gstiirequalizer3bands.c (limited to 'gst/equalizer/gstiirequalizer3bands.c') diff --git a/gst/equalizer/gstiirequalizer3bands.c b/gst/equalizer/gstiirequalizer3bands.c new file mode 100644 index 00000000..aa9a98b2 --- /dev/null +++ b/gst/equalizer/gstiirequalizer3bands.c @@ -0,0 +1,151 @@ +/* GStreamer + * Copyright (C) <2007> Stefan Kost + * + * 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. + */ + +/** + * SECTION:element-equalizer-3bands + * + * + * Example launch line + * + * The 3 band equalizer element changes the frequency spectrum of the audio data. + * + * + * + * gst-launch filesrc location=song.ogg ! oggdemux ! vorbisdec ! audioconvert ! equalizer-3bands band1=-1.0 ! alsasink + * + * This lowers the volume of the 2nd band which is at 632 Hz by FIXME db. + * + * + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "gstiirequalizer.h" +#include "gstiirequalizer3bands.h" + + +enum +{ + ARG_BAND0 = 1, + ARG_BAND1, + ARG_BAND2, +}; + +static void gst_iir_equalizer_3bands_set_property (GObject * object, + guint prop_id, const GValue * value, GParamSpec * pspec); +static void gst_iir_equalizer_3bands_get_property (GObject * object, + guint prop_id, GValue * value, GParamSpec * pspec); + +GST_DEBUG_CATEGORY_EXTERN ()(equalizer_debug); +#define GST_CAT_DEFAULT equalizer_debug + +GST_BOILERPLATE (GstIirEqualizer3Bands, gst_iir_equalizer_3bands, + GstIirEqualizer, GST_TYPE_IIR_EQUALIZER); + +/* equalizer implementation */ + +static void +gst_iir_equalizer_3bands_base_init (gpointer g_class) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); + const GstElementDetails iir_equalizer_details = + GST_ELEMENT_DETAILS ("3 Band Equalizer", + "Filter/Effect/Audio", + "Direct Form 3 band IIR equalizer", + "Stefan Kost "); + + gst_element_class_set_details (element_class, &iir_equalizer_details); +} + +static void +gst_iir_equalizer_3bands_class_init (GstIirEqualizer3BandsClass * klass) +{ + GObjectClass *gobject_class = (GObjectClass *) klass; + + gobject_class->set_property = gst_iir_equalizer_3bands_set_property; + gobject_class->get_property = gst_iir_equalizer_3bands_get_property; + + g_object_class_install_property (gobject_class, ARG_BAND0, + g_param_spec_double ("band0", "20 Hz", + "gain for the frequency band 20 Hz, ranging from -1.0 to +1.0", + -1.0, 1.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE)); + g_object_class_install_property (gobject_class, ARG_BAND1, + g_param_spec_double ("band1", "632 Hz", + "gain for the frequency band 632 Hz, ranging from -1.0 to +1.0", + -1.0, 1.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE)); + g_object_class_install_property (gobject_class, ARG_BAND2, + g_param_spec_double ("band2", "20 kHz", + "gain for the frequency band 20 kHz, ranging from -1.0 to +1.0", + -1.0, 1.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE)); +} + +static void +gst_iir_equalizer_3bands_init (GstIirEqualizer3Bands * equ_n, + GstIirEqualizer3BandsClass * g_class) +{ + GstIirEqualizer *equ = GST_IIR_EQUALIZER (equ_n); + + gst_iir_equalizer_compute_frequencies (equ, 3); +} + +static void +gst_iir_equalizer_3bands_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstIirEqualizer *equ = GST_IIR_EQUALIZER (object); + + switch (prop_id) { + case ARG_BAND0: + gst_child_proxy_set_property (GST_OBJECT (equ), "band0::gain", value); + break; + case ARG_BAND1: + gst_child_proxy_set_property (GST_OBJECT (equ), "band1::gain", value); + break; + case ARG_BAND2: + gst_child_proxy_set_property (GST_OBJECT (equ), "band2::gain", value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_iir_equalizer_3bands_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstIirEqualizer *equ = GST_IIR_EQUALIZER (object); + + switch (prop_id) { + case ARG_BAND0: + gst_child_proxy_get_property (GST_OBJECT (equ), "band0::gain", value); + break; + case ARG_BAND1: + gst_child_proxy_get_property (GST_OBJECT (equ), "band1::gain", value); + break; + case ARG_BAND2: + gst_child_proxy_get_property (GST_OBJECT (equ), "band2::gain", value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} -- cgit v1.2.1