diff -r bc39b352897e -r 69c7080681bf gst_plugins_good/gst/audiofx/audiowsincband.c
--- a/gst_plugins_good/gst/audiofx/audiowsincband.c	Fri Jul 09 16:26:45 2010 -0500
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,440 +0,0 @@
-/* -*- c-basic-offset: 2 -*-
- * 
- * GStreamer
- * Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
- *               2006 Dreamlab Technologies Ltd. <mathis.hofer@dreamlab.net>
- *               2007-2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
- *
- * 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.
- * 
- * 
- * this windowed sinc filter is taken from the freely downloadable DSP book,
- * "The Scientist and Engineer's Guide to Digital Signal Processing",
- * chapter 16
- * available at http://www.dspguide.com/
- *
- */
-
-/**
- * SECTION:element-audiowsincband
- *
- * Attenuates all frequencies outside (bandpass) or inside (bandreject) of a frequency
- * band. The length parameter controls the rolloff, the window parameter
- * controls rolloff and stopband attenuation. The Hamming window provides a faster rolloff but a bit
- * worse stopband attenuation, the other way around for the Blackman window.
- *
- * This element has the advantage over the Chebyshev bandpass and bandreject filter that it has
- * a much better rolloff when using a larger kernel size and almost linear phase. The only
- * disadvantage is the much slower execution time with larger kernels.
- *
- * <refsect2>
- * <title>Example launch line</title>
- * |[
- * gst-launch audiotestsrc freq=1500 ! audioconvert ! audiosincband mode=band-pass lower-frequency=3000 upper-frequency=10000 length=501 window=blackman ! audioconvert ! alsasink
- * gst-launch filesrc location="melo1.ogg" ! oggdemux ! vorbisdec ! audioconvert ! audiowsincband mode=band-reject lower-frequency=59 upper-frequency=61 length=10001 window=hamming ! audioconvert ! alsasink
- * gst-launch audiotestsrc wave=white-noise ! audioconvert ! audiowsincband mode=band-pass lower-frequency=1000 upper-frequency=2000 length=31 ! audioconvert ! alsasink
- * ]|
- * </refsect2>
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <string.h>
-#include <math.h>
-#include <gst/gst.h>
-#include <gst/audio/gstaudiofilter.h>
-#include <gst/controller/gstcontroller.h>
-
-#include "audiowsincband.h"
-
-#define GST_CAT_DEFAULT gst_gst_audio_wsincband_debug
-GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
-
-enum
-{
-  PROP_0,
-  PROP_LENGTH,
-  PROP_LOWER_FREQUENCY,
-  PROP_UPPER_FREQUENCY,
-  PROP_MODE,
-  PROP_WINDOW
-};
-
-enum
-{
-  MODE_BAND_PASS = 0,
-  MODE_BAND_REJECT
-};
-
-#define GST_TYPE_AUDIO_WSINC_BAND_MODE (gst_gst_audio_wsincband_mode_get_type ())
-static GType
-gst_gst_audio_wsincband_mode_get_type (void)
-{
-  static GType gtype = 0;
-
-  if (gtype == 0) {
-    static const GEnumValue values[] = {
-      {MODE_BAND_PASS, "Band pass (default)",
-          "band-pass"},
-      {MODE_BAND_REJECT, "Band reject",
-          "band-reject"},
-      {0, NULL, NULL}
-    };
-
-    gtype = g_enum_register_static ("GstAudioWSincBandMode", values);
-  }
-  return gtype;
-}
-
-enum
-{
-  WINDOW_HAMMING = 0,
-  WINDOW_BLACKMAN
-};
-
-#define GST_TYPE_AUDIO_WSINC_BAND_WINDOW (gst_gst_audio_wsincband_window_get_type ())
-static GType
-gst_gst_audio_wsincband_window_get_type (void)
-{
-  static GType gtype = 0;
-
-  if (gtype == 0) {
-    static const GEnumValue values[] = {
-      {WINDOW_HAMMING, "Hamming window (default)",
-          "hamming"},
-      {WINDOW_BLACKMAN, "Blackman window",
-          "blackman"},
-      {0, NULL, NULL}
-    };
-
-    gtype = g_enum_register_static ("GstAudioWSincBandWindow", values);
-  }
-  return gtype;
-}
-
-#define DEBUG_INIT(bla) \
-  GST_DEBUG_CATEGORY_INIT (gst_gst_audio_wsincband_debug, "audiowsincband", 0, \
-      "Band-pass and Band-reject Windowed sinc filter plugin");
-
-GST_BOILERPLATE_FULL (GstAudioWSincBand, gst_audio_wsincband, GstAudioFilter,
-    GST_TYPE_AUDIO_FX_BASE_FIR_FILTER, DEBUG_INIT);
-
-static void gst_audio_wsincband_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec);
-static void gst_audio_wsincband_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec);
-static void gst_audio_wsincband_finalize (GObject * object);
-
-static gboolean gst_audio_wsincband_setup (GstAudioFilter * base,
-    GstRingBufferSpec * format);
-
-/* Element class */
-static void
-gst_audio_wsincband_base_init (gpointer g_class)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
-  gst_element_class_set_details_simple (element_class,
-      "Band pass & band reject filter", "Filter/Effect/Audio",
-      "Band pass and band reject windowed sinc filter",
-      "Thomas Vander Stichele <thomas at apestaart dot org>, "
-      "Steven W. Smith, "
-      "Dreamlab Technologies Ltd. <mathis.hofer@dreamlab.net>, "
-      "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
-}
-
-static void
-gst_audio_wsincband_class_init (GstAudioWSincBandClass * klass)
-{
-  GObjectClass *gobject_class = (GObjectClass *) klass;
-  GstAudioFilterClass *filter_class = (GstAudioFilterClass *) klass;
-
-  gobject_class->set_property = gst_audio_wsincband_set_property;
-  gobject_class->get_property = gst_audio_wsincband_get_property;
-  gobject_class->finalize = gst_audio_wsincband_finalize;
-
-  /* FIXME: Don't use the complete possible range but restrict the upper boundary
-   * so automatically generated UIs can use a slider */
-  g_object_class_install_property (gobject_class, PROP_LOWER_FREQUENCY,
-      g_param_spec_float ("lower-frequency", "Lower Frequency",
-          "Cut-off lower frequency (Hz)", 0.0, 100000.0, 0,
-          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_UPPER_FREQUENCY,
-      g_param_spec_float ("upper-frequency", "Upper Frequency",
-          "Cut-off upper frequency (Hz)", 0.0, 100000.0, 0,
-          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_LENGTH,
-      g_param_spec_int ("length", "Length",
-          "Filter kernel length, will be rounded to the next odd number", 3,
-          50000, 101,
-          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
-
-  g_object_class_install_property (gobject_class, PROP_MODE,
-      g_param_spec_enum ("mode", "Mode",
-          "Band pass or band reject mode", GST_TYPE_AUDIO_WSINC_BAND_MODE,
-          MODE_BAND_PASS,
-          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
-
-  g_object_class_install_property (gobject_class, PROP_WINDOW,
-      g_param_spec_enum ("window", "Window",
-          "Window function to use", GST_TYPE_AUDIO_WSINC_BAND_WINDOW,
-          WINDOW_HAMMING,
-          G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
-
-  filter_class->setup = GST_DEBUG_FUNCPTR (gst_audio_wsincband_setup);
-}
-
-static void
-gst_audio_wsincband_init (GstAudioWSincBand * self,
-    GstAudioWSincBandClass * g_class)
-{
-  self->kernel_length = 101;
-  self->lower_frequency = 0.0;
-  self->upper_frequency = 0.0;
-  self->mode = MODE_BAND_PASS;
-  self->window = WINDOW_HAMMING;
-
-  self->lock = g_mutex_new ();
-}
-
-static void
-gst_audio_wsincband_build_kernel (GstAudioWSincBand * self)
-{
-  gint i = 0;
-  gdouble sum = 0.0;
-  gint len = 0;
-  gdouble *kernel_lp, *kernel_hp;
-  gdouble w;
-  gdouble *kernel;
-
-  len = self->kernel_length;
-
-  if (GST_AUDIO_FILTER (self)->format.rate == 0) {
-    GST_DEBUG ("rate not set yet");
-    return;
-  }
-
-  if (GST_AUDIO_FILTER (self)->format.channels == 0) {
-    GST_DEBUG ("channels not set yet");
-    return;
-  }
-
-  /* Clamp frequencies */
-  self->lower_frequency =
-      CLAMP (self->lower_frequency, 0.0,
-      GST_AUDIO_FILTER (self)->format.rate / 2);
-  self->upper_frequency =
-      CLAMP (self->upper_frequency, 0.0,
-      GST_AUDIO_FILTER (self)->format.rate / 2);
-  if (self->lower_frequency > self->upper_frequency) {
-    gint tmp = self->lower_frequency;
-
-    self->lower_frequency = self->upper_frequency;
-    self->upper_frequency = tmp;
-  }
-
-  GST_DEBUG ("gst_audio_wsincband: initializing filter kernel of length %d "
-      "with lower frequency %.2lf Hz "
-      ", upper frequency %.2lf Hz for mode %s",
-      len, self->lower_frequency, self->upper_frequency,
-      (self->mode == MODE_BAND_PASS) ? "band-pass" : "band-reject");
-
-  /* fill the lp kernel */
-  w = 2 * M_PI * (self->lower_frequency / GST_AUDIO_FILTER (self)->format.rate);
-  kernel_lp = g_new (gdouble, len);
-  for (i = 0; i < len; ++i) {
-    if (i == len / 2)
-      kernel_lp[i] = w;
-    else
-      kernel_lp[i] = sin (w * (i - len / 2))
-          / (i - len / 2);
-    /* Windowing */
-    if (self->window == WINDOW_HAMMING)
-      kernel_lp[i] *= (0.54 - 0.46 * cos (2 * M_PI * i / len));
-    else
-      kernel_lp[i] *=
-          (0.42 - 0.5 * cos (2 * M_PI * i / len) +
-          0.08 * cos (4 * M_PI * i / len));
-  }
-
-  /* normalize for unity gain at DC */
-  sum = 0.0;
-  for (i = 0; i < len; ++i)
-    sum += kernel_lp[i];
-  for (i = 0; i < len; ++i)
-    kernel_lp[i] /= sum;
-
-  /* fill the hp kernel */
-  w = 2 * M_PI * (self->upper_frequency / GST_AUDIO_FILTER (self)->format.rate);
-  kernel_hp = g_new (gdouble, len);
-  for (i = 0; i < len; ++i) {
-    if (i == len / 2)
-      kernel_hp[i] = w;
-    else
-      kernel_hp[i] = sin (w * (i - len / 2))
-          / (i - len / 2);
-    /* Windowing */
-    if (self->window == WINDOW_HAMMING)
-      kernel_hp[i] *= (0.54 - 0.46 * cos (2 * M_PI * i / len));
-    else
-      kernel_hp[i] *=
-          (0.42 - 0.5 * cos (2 * M_PI * i / len) +
-          0.08 * cos (4 * M_PI * i / len));
-  }
-
-  /* normalize for unity gain at DC */
-  sum = 0.0;
-  for (i = 0; i < len; ++i)
-    sum += kernel_hp[i];
-  for (i = 0; i < len; ++i)
-    kernel_hp[i] /= sum;
-
-  /* do spectral inversion to go from lowpass to highpass */
-  for (i = 0; i < len; ++i)
-    kernel_hp[i] = -kernel_hp[i];
-  kernel_hp[len / 2] += 1;
-
-  /* combine the two kernels */
-  kernel = g_new (gdouble, len);
-
-  for (i = 0; i < len; ++i)
-    kernel[i] = kernel_lp[i] + kernel_hp[i];
-
-  /* free the helper kernels */
-  g_free (kernel_lp);
-  g_free (kernel_hp);
-
-  /* do spectral inversion to go from bandreject to bandpass
-   * if specified */
-  if (self->mode == MODE_BAND_PASS) {
-    for (i = 0; i < len; ++i)
-      kernel[i] = -kernel[i];
-    kernel[len / 2] += 1;
-  }
-
-  gst_audio_fx_base_fir_filter_set_kernel (GST_AUDIO_FX_BASE_FIR_FILTER (self),
-      kernel, self->kernel_length, (len - 1) / 2);
-}
-
-/* GstAudioFilter vmethod implementations */
-
-/* get notified of caps and plug in the correct process function */
-static gboolean
-gst_audio_wsincband_setup (GstAudioFilter * base, GstRingBufferSpec * format)
-{
-  GstAudioWSincBand *self = GST_AUDIO_WSINC_BAND (base);
-
-  gst_audio_wsincband_build_kernel (self);
-
-  return GST_AUDIO_FILTER_CLASS (parent_class)->setup (base, format);
-}
-
-static void
-gst_audio_wsincband_finalize (GObject * object)
-{
-  GstAudioWSincBand *self = GST_AUDIO_WSINC_BAND (object);
-
-  g_mutex_free (self->lock);
-  self->lock = NULL;
-
-  G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static void
-gst_audio_wsincband_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec)
-{
-  GstAudioWSincBand *self = GST_AUDIO_WSINC_BAND (object);
-
-  g_return_if_fail (GST_IS_AUDIO_WSINC_BAND (self));
-
-  switch (prop_id) {
-    case PROP_LENGTH:{
-      gint val;
-
-      g_mutex_lock (self->lock);
-      val = g_value_get_int (value);
-      if (val % 2 == 0)
-        val++;
-
-      if (val != self->kernel_length) {
-        gst_audio_fx_base_fir_filter_push_residue (GST_AUDIO_FX_BASE_FIR_FILTER
-            (self));
-        self->kernel_length = val;
-        gst_audio_wsincband_build_kernel (self);
-      }
-      g_mutex_unlock (self->lock);
-      break;
-    }
-    case PROP_LOWER_FREQUENCY:
-      g_mutex_lock (self->lock);
-      self->lower_frequency = g_value_get_float (value);
-      gst_audio_wsincband_build_kernel (self);
-      g_mutex_unlock (self->lock);
-      break;
-    case PROP_UPPER_FREQUENCY:
-      g_mutex_lock (self->lock);
-      self->upper_frequency = g_value_get_float (value);
-      gst_audio_wsincband_build_kernel (self);
-      g_mutex_unlock (self->lock);
-      break;
-    case PROP_MODE:
-      g_mutex_lock (self->lock);
-      self->mode = g_value_get_enum (value);
-      gst_audio_wsincband_build_kernel (self);
-      g_mutex_unlock (self->lock);
-      break;
-    case PROP_WINDOW:
-      g_mutex_lock (self->lock);
-      self->window = g_value_get_enum (value);
-      gst_audio_wsincband_build_kernel (self);
-      g_mutex_unlock (self->lock);
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}
-
-static void
-gst_audio_wsincband_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec)
-{
-  GstAudioWSincBand *self = GST_AUDIO_WSINC_BAND (object);
-
-  switch (prop_id) {
-    case PROP_LENGTH:
-      g_value_set_int (value, self->kernel_length);
-      break;
-    case PROP_LOWER_FREQUENCY:
-      g_value_set_float (value, self->lower_frequency);
-      break;
-    case PROP_UPPER_FREQUENCY:
-      g_value_set_float (value, self->upper_frequency);
-      break;
-    case PROP_MODE:
-      g_value_set_enum (value, self->mode);
-      break;
-    case PROP_WINDOW:
-      g_value_set_enum (value, self->window);
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}