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gstreamer/gst/equalizer/gstiirequalizer10bands.c
Sebastian Dröge 4f77b46494 gst/equalizer/: And continue to update docs. Also include some sample code for the n-band equalizer in the docs. 
Original commit message from CVS:
* gst/equalizer/gstiirequalizer10bands.c:
* gst/equalizer/gstiirequalizer3bands.c:
* gst/equalizer/gstiirequalizernbands.c:
And continue to update docs. Also include some sample code
for the n-band equalizer in the docs.
2007-11-11 13:55:27 +00:00

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/* GStreamer
* Copyright (C) <2007> Stefan Kost <ensonic@users.sf.net>
*
* 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-10bands
* @short_description: 10-band equalizer
*
* <refsect2>
* <para>
* The 10 band equalizer element allows to change the gain of 10 equally distributed
* frequency bands between 30 Hz and 15 kHz.
* </para>
* <title>Example launch line</title>
* <para>
* <programlisting>
* gst-launch filesrc location=song.ogg ! oggdemux ! vorbisdec ! audioconvert ! equalizer-10bands band2=3.0 ! alsasink
* </programlisting>
* This raises the volume of the 3rd band which is at 119 Hz by 3 db.
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstiirequalizer.h"
#include "gstiirequalizer10bands.h"
enum
{
ARG_BAND0 = 1,
ARG_BAND1,
ARG_BAND2,
ARG_BAND3,
ARG_BAND4,
ARG_BAND5,
ARG_BAND6,
ARG_BAND7,
ARG_BAND8,
ARG_BAND9,
};
static void gst_iir_equalizer_10bands_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_iir_equalizer_10bands_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 (GstIirEqualizer10Bands, gst_iir_equalizer_10bands,
GstIirEqualizer, GST_TYPE_IIR_EQUALIZER);
/* equalizer implementation */
static void
gst_iir_equalizer_10bands_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
const GstElementDetails iir_equalizer_details =
GST_ELEMENT_DETAILS ("10 Band Equalizer",
"Filter/Effect/Audio",
"Direct Form 10 band IIR equalizer",
"Stefan Kost <ensonic@users.sf.net>");
gst_element_class_set_details (element_class, &iir_equalizer_details);
}
static void
gst_iir_equalizer_10bands_class_init (GstIirEqualizer10BandsClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
gobject_class->set_property = gst_iir_equalizer_10bands_set_property;
gobject_class->get_property = gst_iir_equalizer_10bands_get_property;
g_object_class_install_property (gobject_class, ARG_BAND0,
g_param_spec_double ("band0", "29 Hz",
"gain for the frequency band 29 Hz, ranging from -24 dB to +12 dB",
-24.0, 12.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, ARG_BAND1,
g_param_spec_double ("band1", "59 Hz",
"gain for the frequency band 59 Hz, ranging from -24 dB to +12 dB",
-24.0, 12.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, ARG_BAND2,
g_param_spec_double ("band2", "119 Hz",
"gain for the frequency band 119 Hz, ranging from -24 dB to +12 dB",
-24.0, 12.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, ARG_BAND3,
g_param_spec_double ("band3", "227 Hz",
"gain for the frequency band 227 Hz, ranging from -24 dB to +12 dB",
-24.0, 12.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, ARG_BAND4,
g_param_spec_double ("band4", "474 Hz",
"gain for the frequency band 474 Hz, ranging from -24 dB to +12 dB",
-24.0, 12.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, ARG_BAND5,
g_param_spec_double ("band5", "947 Hz",
"gain for the frequency band 947 Hz, ranging from -24 dB to +12 dB",
-24.0, 12.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, ARG_BAND6,
g_param_spec_double ("band6", "1889 Hz",
"gain for the frequency band 1889 Hz, ranging from -24 dB to +12 dB",
-24.0, 12.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, ARG_BAND7,
g_param_spec_double ("band7", "3770 Hz",
"gain for the frequency band 3770 Hz, ranging from -24 dB to +12 dB",
-24.0, 12.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, ARG_BAND8,
g_param_spec_double ("band8", "7523 Hz",
"gain for the frequency band 7523 Hz, ranging from -24 dB to +12 dB",
-24.0, 12.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, ARG_BAND9,
g_param_spec_double ("band9", "15011 Hz",
"gain for the frequency band 15011 Hz, ranging from -24 dB to +12 dB",
-24.0, 12.0, 0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
}
static void
gst_iir_equalizer_10bands_init (GstIirEqualizer10Bands * equ_n,
GstIirEqualizer10BandsClass * g_class)
{
GstIirEqualizer *equ = GST_IIR_EQUALIZER (equ_n);
gst_iir_equalizer_compute_frequencies (equ, 10);
}
static void
gst_iir_equalizer_10bands_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;
case ARG_BAND3:
gst_child_proxy_set_property (GST_OBJECT (equ), "band3::gain", value);
break;
case ARG_BAND4:
gst_child_proxy_set_property (GST_OBJECT (equ), "band4::gain", value);
break;
case ARG_BAND5:
gst_child_proxy_set_property (GST_OBJECT (equ), "band5::gain", value);
break;
case ARG_BAND6:
gst_child_proxy_set_property (GST_OBJECT (equ), "band6::gain", value);
break;
case ARG_BAND7:
gst_child_proxy_set_property (GST_OBJECT (equ), "band7::gain", value);
break;
case ARG_BAND8:
gst_child_proxy_set_property (GST_OBJECT (equ), "band8::gain", value);
break;
case ARG_BAND9:
gst_child_proxy_set_property (GST_OBJECT (equ), "band9::gain", value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_iir_equalizer_10bands_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;
case ARG_BAND3:
gst_child_proxy_get_property (GST_OBJECT (equ), "band3::gain", value);
break;
case ARG_BAND4:
gst_child_proxy_get_property (GST_OBJECT (equ), "band4::gain", value);
break;
case ARG_BAND5:
gst_child_proxy_get_property (GST_OBJECT (equ), "band5::gain", value);
break;
case ARG_BAND6:
gst_child_proxy_get_property (GST_OBJECT (equ), "band6::gain", value);
break;
case ARG_BAND7:
gst_child_proxy_get_property (GST_OBJECT (equ), "band7::gain", value);
break;
case ARG_BAND8:
gst_child_proxy_get_property (GST_OBJECT (equ), "band8::gain", value);
break;
case ARG_BAND9:
gst_child_proxy_get_property (GST_OBJECT (equ), "band9::gain", value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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