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Diffstat (limited to 'gst/equalizer/gstiirequalizernbands.c')
| -rw-r--r-- | gst/equalizer/gstiirequalizernbands.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/gst/equalizer/gstiirequalizernbands.c b/gst/equalizer/gstiirequalizernbands.c deleted file mode 100644 index 316cd029..00000000 --- a/gst/equalizer/gstiirequalizernbands.c +++ /dev/null @@ -1,183 +0,0 @@ -/* GStreamer - * Copyright (C) <2004> Benjamin Otte <otte@gnome.org> - * <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-nbands - * @short_description: Fully parametric N-band equalizer - * - * <refsect2> - * <para> - * The n-band equalizer element is a fully parametric equalizer. It allows to - * select between 1 and 64 bands and has properties on each band to change - * the center frequency, band width and gain. - * </para> - * <title>Example launch line</title> - * <para> - * <programlisting> - * gst-launch filesrc location=song.ogg ! oggdemux ! vorbisdec ! audioconvert ! equalizer-nbands num-bands=15 band5::gain=6.0 ! alsasink - * </programlisting> - * This make the equalizer use 15 bands and raises the volume of the 5th band by 6 db. - * </para> - * <title>Example code</title> - * <para> - * <programlisting> - -#include <gst/gst.h> - -... -typedef struct { - gfloat freq; - gfloat width; - gfloat gain; -} GstEqualizerBandState; - -... - - GstElement *equalizer; - GstObject *band; - gint i; - GstEqualizerBandState state[] = { - { 120.0, 50.0, - 3.0}, - { 500.0, 20.0, 12.0}, - {1503.0, 2.0, -20.0}, - {6000.0, 1000.0, 6.0}, - {3000.0, 120.0, 2.0} - }; - -... - - - equalizer = gst_element_factory_make ("equalizer-nbands", "equalizer"); - g_object_set (G_OBJECT (equalizer), "num-bands", 5, NULL); - -... - - for (i = 0; i < 5; i++) { - band = gst_child_proxy_get_child_by_index (GST_CHILD_PROXY (equalizer), i); - g_object_set (G_OBJECT (band), "freq", state[i].freq, - "bandwidth", state[i].width, - "gain", state[i].gain); - g_object_unref (G_OBJECT (band)); - } - -... - - * </programlisting> - * </para> - * </refsect2> - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "gstiirequalizer.h" -#include "gstiirequalizernbands.h" - - -enum -{ - ARG_NUM_BANDS = 1 -}; - -static void gst_iir_equalizer_nbands_set_property (GObject * object, - guint prop_id, const GValue * value, GParamSpec * pspec); -static void gst_iir_equalizer_nbands_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 (GstIirEqualizerNBands, gst_iir_equalizer_nbands, - GstIirEqualizer, GST_TYPE_IIR_EQUALIZER); - -/* equalizer implementation */ - -static void -gst_iir_equalizer_nbands_base_init (gpointer g_class) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); - const GstElementDetails iir_equalizer_details = - GST_ELEMENT_DETAILS ("N Band Equalizer", - "Filter/Effect/Audio", - "Direct Form IIR equalizer", - "Benjamin Otte <otte@gnome.org>," " Stefan Kost <ensonic@users.sf.net>"); - - gst_element_class_set_details (element_class, &iir_equalizer_details); -} - -static void -gst_iir_equalizer_nbands_class_init (GstIirEqualizerNBandsClass * klass) -{ - GObjectClass *gobject_class = (GObjectClass *) klass; - - gobject_class->set_property = gst_iir_equalizer_nbands_set_property; - gobject_class->get_property = gst_iir_equalizer_nbands_get_property; - - g_object_class_install_property (gobject_class, ARG_NUM_BANDS, - g_param_spec_uint ("num-bands", "num-bands", - "number of different bands to use", 1, 64, 10, - G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); -} - -static void -gst_iir_equalizer_nbands_init (GstIirEqualizerNBands * equ_n, - GstIirEqualizerNBandsClass * g_class) -{ - GstIirEqualizer *equ = GST_IIR_EQUALIZER (equ_n); - - gst_iir_equalizer_compute_frequencies (equ, 10); -} - -static void -gst_iir_equalizer_nbands_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec) -{ - GstIirEqualizer *equ = GST_IIR_EQUALIZER (object); - - GST_BASE_TRANSFORM_LOCK (equ); - GST_OBJECT_LOCK (equ); - switch (prop_id) { - case ARG_NUM_BANDS: - gst_iir_equalizer_compute_frequencies (equ, g_value_get_uint (value)); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } - GST_OBJECT_UNLOCK (equ); - GST_BASE_TRANSFORM_UNLOCK (equ); -} - -static void -gst_iir_equalizer_nbands_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec) -{ - GstIirEqualizer *equ = GST_IIR_EQUALIZER (object); - - switch (prop_id) { - case ARG_NUM_BANDS: - g_value_set_uint (value, equ->freq_band_count); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} |