1 /* GStreamer
2  * Copyright (C) <2007> Stefan Kost <ensonic@users.sf.net>
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Library General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Library General Public License for more details.
13  *
14  * You should have received a copy of the GNU Library General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17  * Boston, MA 02110-1301, USA.
18  */
19 
20 /**
21  * SECTION:element-equalizer-10bands
22  *
23  * The 10 band equalizer element allows to change the gain of 10 equally distributed
24  * frequency bands between 30 Hz and 15 kHz.
25  *
26  * <refsect2>
27  * <title>Example launch line</title>
28  * |[
29  * gst-launch-1.0 filesrc location=song.ogg ! oggdemux ! vorbisdec ! audioconvert ! equalizer-10bands band2=3.0 ! alsasink
30  * ]| This raises the volume of the 3rd band which is at 119 Hz by 3 db.
31  * </refsect2>
32  */
33 
34 #ifdef HAVE_CONFIG_H
35 #include "config.h"
36 #endif
37 
38 #include "gstiirequalizer.h"
39 #include "gstiirequalizer10bands.h"
40 
41 
42 enum
43 {
44   PROP_BAND0 = 1,
45   PROP_BAND1,
46   PROP_BAND2,
47   PROP_BAND3,
48   PROP_BAND4,
49   PROP_BAND5,
50   PROP_BAND6,
51   PROP_BAND7,
52   PROP_BAND8,
53   PROP_BAND9,
54 };
55 
56 static void gst_iir_equalizer_10bands_set_property (GObject * object,
57     guint prop_id, const GValue * value, GParamSpec * pspec);
58 static void gst_iir_equalizer_10bands_get_property (GObject * object,
59     guint prop_id, GValue * value, GParamSpec * pspec);
60 
61 GST_DEBUG_CATEGORY_EXTERN (equalizer_debug);
62 #define GST_CAT_DEFAULT equalizer_debug
63 
64 
65 #define gst_iir_equalizer_10bands_parent_class parent_class
66 G_DEFINE_TYPE (GstIirEqualizer10Bands, gst_iir_equalizer_10bands,
67     GST_TYPE_IIR_EQUALIZER);
68 
69 /* equalizer implementation */
70 
71 static void
gst_iir_equalizer_10bands_class_init(GstIirEqualizer10BandsClass * klass)72 gst_iir_equalizer_10bands_class_init (GstIirEqualizer10BandsClass * klass)
73 {
74   GObjectClass *gobject_class = (GObjectClass *) klass;
75   GstElementClass *gstelement_class = (GstElementClass *) klass;
76 
77   gobject_class->set_property = gst_iir_equalizer_10bands_set_property;
78   gobject_class->get_property = gst_iir_equalizer_10bands_get_property;
79 
80   g_object_class_install_property (gobject_class, PROP_BAND0,
81       g_param_spec_double ("band0", "29 Hz",
82           "gain for the frequency band 29 Hz, ranging from -24 dB to +12 dB",
83           -24.0, 12.0, 0.0,
84           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
85   g_object_class_install_property (gobject_class, PROP_BAND1,
86       g_param_spec_double ("band1", "59 Hz",
87           "gain for the frequency band 59 Hz, ranging from -24 dB to +12 dB",
88           -24.0, 12.0, 0.0,
89           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
90   g_object_class_install_property (gobject_class, PROP_BAND2,
91       g_param_spec_double ("band2", "119 Hz",
92           "gain for the frequency band 119 Hz, ranging from -24 dB to +12 dB",
93           -24.0, 12.0, 0.0,
94           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
95   g_object_class_install_property (gobject_class, PROP_BAND3,
96       g_param_spec_double ("band3", "237 Hz",
97           "gain for the frequency band 237 Hz, ranging from -24 dB to +12 dB",
98           -24.0, 12.0, 0.0,
99           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
100   g_object_class_install_property (gobject_class, PROP_BAND4,
101       g_param_spec_double ("band4", "474 Hz",
102           "gain for the frequency band 474 Hz, ranging from -24 dB to +12 dB",
103           -24.0, 12.0, 0.0,
104           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
105   g_object_class_install_property (gobject_class, PROP_BAND5,
106       g_param_spec_double ("band5", "947 Hz",
107           "gain for the frequency band 947 Hz, ranging from -24 dB to +12 dB",
108           -24.0, 12.0, 0.0,
109           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
110   g_object_class_install_property (gobject_class, PROP_BAND6,
111       g_param_spec_double ("band6", "1889 Hz",
112           "gain for the frequency band 1889 Hz, ranging from -24 dB to +12 dB",
113           -24.0, 12.0, 0.0,
114           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
115   g_object_class_install_property (gobject_class, PROP_BAND7,
116       g_param_spec_double ("band7", "3770 Hz",
117           "gain for the frequency band 3770 Hz, ranging from -24 dB to +12 dB",
118           -24.0, 12.0, 0.0,
119           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
120   g_object_class_install_property (gobject_class, PROP_BAND8,
121       g_param_spec_double ("band8", "7523 Hz",
122           "gain for the frequency band 7523 Hz, ranging from -24 dB to +12 dB",
123           -24.0, 12.0, 0.0,
124           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
125   g_object_class_install_property (gobject_class, PROP_BAND9,
126       g_param_spec_double ("band9", "15011 Hz",
127           "gain for the frequency band 15011 Hz, ranging from -24 dB to +12 dB",
128           -24.0, 12.0, 0.0,
129           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
130 
131   gst_element_class_set_static_metadata (gstelement_class, "10 Band Equalizer",
132       "Filter/Effect/Audio",
133       "Direct Form 10 band IIR equalizer",
134       "Stefan Kost <ensonic@users.sf.net>");
135 }
136 
137 static void
gst_iir_equalizer_10bands_init(GstIirEqualizer10Bands * equ_n)138 gst_iir_equalizer_10bands_init (GstIirEqualizer10Bands * equ_n)
139 {
140   GstIirEqualizer *equ = GST_IIR_EQUALIZER (equ_n);
141 
142   gst_iir_equalizer_compute_frequencies (equ, 10);
143 }
144 
145 static void
gst_iir_equalizer_10bands_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)146 gst_iir_equalizer_10bands_set_property (GObject * object, guint prop_id,
147     const GValue * value, GParamSpec * pspec)
148 {
149   GstChildProxy *equ = GST_CHILD_PROXY (object);
150 
151   switch (prop_id) {
152     case PROP_BAND0:
153       gst_child_proxy_set_property (equ, "band0::gain", value);
154       break;
155     case PROP_BAND1:
156       gst_child_proxy_set_property (equ, "band1::gain", value);
157       break;
158     case PROP_BAND2:
159       gst_child_proxy_set_property (equ, "band2::gain", value);
160       break;
161     case PROP_BAND3:
162       gst_child_proxy_set_property (equ, "band3::gain", value);
163       break;
164     case PROP_BAND4:
165       gst_child_proxy_set_property (equ, "band4::gain", value);
166       break;
167     case PROP_BAND5:
168       gst_child_proxy_set_property (equ, "band5::gain", value);
169       break;
170     case PROP_BAND6:
171       gst_child_proxy_set_property (equ, "band6::gain", value);
172       break;
173     case PROP_BAND7:
174       gst_child_proxy_set_property (equ, "band7::gain", value);
175       break;
176     case PROP_BAND8:
177       gst_child_proxy_set_property (equ, "band8::gain", value);
178       break;
179     case PROP_BAND9:
180       gst_child_proxy_set_property (equ, "band9::gain", value);
181       break;
182     default:
183       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
184       break;
185   }
186 }
187 
188 static void
gst_iir_equalizer_10bands_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)189 gst_iir_equalizer_10bands_get_property (GObject * object, guint prop_id,
190     GValue * value, GParamSpec * pspec)
191 {
192   GstChildProxy *equ = GST_CHILD_PROXY (object);
193 
194   switch (prop_id) {
195     case PROP_BAND0:
196       gst_child_proxy_get_property (equ, "band0::gain", value);
197       break;
198     case PROP_BAND1:
199       gst_child_proxy_get_property (equ, "band1::gain", value);
200       break;
201     case PROP_BAND2:
202       gst_child_proxy_get_property (equ, "band2::gain", value);
203       break;
204     case PROP_BAND3:
205       gst_child_proxy_get_property (equ, "band3::gain", value);
206       break;
207     case PROP_BAND4:
208       gst_child_proxy_get_property (equ, "band4::gain", value);
209       break;
210     case PROP_BAND5:
211       gst_child_proxy_get_property (equ, "band5::gain", value);
212       break;
213     case PROP_BAND6:
214       gst_child_proxy_get_property (equ, "band6::gain", value);
215       break;
216     case PROP_BAND7:
217       gst_child_proxy_get_property (equ, "band7::gain", value);
218       break;
219     case PROP_BAND8:
220       gst_child_proxy_get_property (equ, "band8::gain", value);
221       break;
222     case PROP_BAND9:
223       gst_child_proxy_get_property (equ, "band9::gain", value);
224       break;
225     default:
226       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
227       break;
228   }
229 }
230