Add audioiirfilter and audiofirfilter elements which allow generic IIR/FIR filters to be implemented by providing the...
Original commit message from CVS:
* configure.ac:
* gst/audiofx/Makefile.am:
* gst/audiofx/audiofirfilter.c: (gst_audio_fir_filter_base_init),
(gst_audio_fir_filter_class_init),
(gst_audio_fir_filter_update_kernel), (gst_audio_fir_filter_init),
(gst_audio_fir_filter_setup), (gst_audio_fir_filter_finalize),
(gst_audio_fir_filter_set_property),
(gst_audio_fir_filter_get_property):
* gst/audiofx/audiofirfilter.h:
* gst/audiofx/audiofx.c: (plugin_init):
* gst/audiofx/audioiirfilter.c: (gst_audio_iir_filter_base_init),
(gst_audio_iir_filter_class_init),
(gst_audio_iir_filter_update_coefficients),
(gst_audio_iir_filter_init), (gst_audio_iir_filter_setup),
(gst_audio_iir_filter_finalize),
(gst_audio_iir_filter_set_property),
(gst_audio_iir_filter_get_property):
* gst/audiofx/audioiirfilter.h:
Add audioiirfilter and audiofirfilter elements which allow
generic IIR/FIR filters to be implemented by providing the
filter coefficients. Fixes bug #567577.
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-good-plugins-docs.sgml:
* docs/plugins/gst-plugins-good-plugins-sections.txt:
* docs/plugins/gst-plugins-good-plugins.args:
* docs/plugins/gst-plugins-good-plugins.hierarchy:
* docs/plugins/gst-plugins-good-plugins.signals:
* docs/plugins/inspect/plugin-alaw.xml:
* docs/plugins/inspect/plugin-audiofx.xml:
* docs/plugins/inspect/plugin-avi.xml:
* docs/plugins/inspect/plugin-flac.xml:
* docs/plugins/inspect/plugin-mulaw.xml:
* docs/plugins/inspect/plugin-video4linux2.xml:
* docs/plugins/inspect/plugin-wavparse.xml:
Add documentation for the audioiirfilter and audiofirfilter
elements.
* tests/check/Makefile.am:
* tests/check/elements/audiofirfilter.c: (on_message),
(on_rate_changed), (on_handoff), (GST_START_TEST),
(audiofirfilter_suite):
* tests/check/elements/audioiirfilter.c: (on_message),
(on_rate_changed), (on_handoff), (GST_START_TEST),
(audioiirfilter_suite):
* tests/examples/Makefile.am:
* tests/examples/audiofx/Makefile.am:
* tests/examples/audiofx/firfilter-example.c: (on_message),
(on_rate_changed), (main):
* tests/examples/audiofx/iirfilter-example.c: (on_message),
(on_rate_changed), (main):
Add unit tests and example applications for the two filter
elements.
2009-01-13 19:23:57 +00:00
|
|
|
/*
|
|
|
|
* GStreamer
|
|
|
|
* Copyright (C) 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.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
|
|
* SECTION:element-audiofirfilter
|
|
|
|
*
|
|
|
|
* audiofirfilter implements a generic audio <ulink url="http://en.wikipedia.org/wiki/Finite_impulse_response">FIR filter</ulink>. Before usage the
|
|
|
|
* "kernel" property has to be set to the filter kernel that should be
|
|
|
|
* used and the "latency" property has to be set to the latency (in samples)
|
|
|
|
* that is introduced by the filter kernel. Setting a latency of n samples
|
|
|
|
* will lead to the first n samples being dropped from the output and
|
|
|
|
* n samples added to the end.
|
2009-01-28 10:29:42 +00:00
|
|
|
*
|
Add audioiirfilter and audiofirfilter elements which allow generic IIR/FIR filters to be implemented by providing the...
Original commit message from CVS:
* configure.ac:
* gst/audiofx/Makefile.am:
* gst/audiofx/audiofirfilter.c: (gst_audio_fir_filter_base_init),
(gst_audio_fir_filter_class_init),
(gst_audio_fir_filter_update_kernel), (gst_audio_fir_filter_init),
(gst_audio_fir_filter_setup), (gst_audio_fir_filter_finalize),
(gst_audio_fir_filter_set_property),
(gst_audio_fir_filter_get_property):
* gst/audiofx/audiofirfilter.h:
* gst/audiofx/audiofx.c: (plugin_init):
* gst/audiofx/audioiirfilter.c: (gst_audio_iir_filter_base_init),
(gst_audio_iir_filter_class_init),
(gst_audio_iir_filter_update_coefficients),
(gst_audio_iir_filter_init), (gst_audio_iir_filter_setup),
(gst_audio_iir_filter_finalize),
(gst_audio_iir_filter_set_property),
(gst_audio_iir_filter_get_property):
* gst/audiofx/audioiirfilter.h:
Add audioiirfilter and audiofirfilter elements which allow
generic IIR/FIR filters to be implemented by providing the
filter coefficients. Fixes bug #567577.
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-good-plugins-docs.sgml:
* docs/plugins/gst-plugins-good-plugins-sections.txt:
* docs/plugins/gst-plugins-good-plugins.args:
* docs/plugins/gst-plugins-good-plugins.hierarchy:
* docs/plugins/gst-plugins-good-plugins.signals:
* docs/plugins/inspect/plugin-alaw.xml:
* docs/plugins/inspect/plugin-audiofx.xml:
* docs/plugins/inspect/plugin-avi.xml:
* docs/plugins/inspect/plugin-flac.xml:
* docs/plugins/inspect/plugin-mulaw.xml:
* docs/plugins/inspect/plugin-video4linux2.xml:
* docs/plugins/inspect/plugin-wavparse.xml:
Add documentation for the audioiirfilter and audiofirfilter
elements.
* tests/check/Makefile.am:
* tests/check/elements/audiofirfilter.c: (on_message),
(on_rate_changed), (on_handoff), (GST_START_TEST),
(audiofirfilter_suite):
* tests/check/elements/audioiirfilter.c: (on_message),
(on_rate_changed), (on_handoff), (GST_START_TEST),
(audioiirfilter_suite):
* tests/examples/Makefile.am:
* tests/examples/audiofx/Makefile.am:
* tests/examples/audiofx/firfilter-example.c: (on_message),
(on_rate_changed), (main):
* tests/examples/audiofx/iirfilter-example.c: (on_message),
(on_rate_changed), (main):
Add unit tests and example applications for the two filter
elements.
2009-01-13 19:23:57 +00:00
|
|
|
* The filter kernel describes the impulse response of the filter. To
|
|
|
|
* calculate the frequency response of the filter you have to calculate
|
|
|
|
* the Fourier Transform of the impulse response.
|
2009-01-28 10:29:42 +00:00
|
|
|
*
|
Add audioiirfilter and audiofirfilter elements which allow generic IIR/FIR filters to be implemented by providing the...
Original commit message from CVS:
* configure.ac:
* gst/audiofx/Makefile.am:
* gst/audiofx/audiofirfilter.c: (gst_audio_fir_filter_base_init),
(gst_audio_fir_filter_class_init),
(gst_audio_fir_filter_update_kernel), (gst_audio_fir_filter_init),
(gst_audio_fir_filter_setup), (gst_audio_fir_filter_finalize),
(gst_audio_fir_filter_set_property),
(gst_audio_fir_filter_get_property):
* gst/audiofx/audiofirfilter.h:
* gst/audiofx/audiofx.c: (plugin_init):
* gst/audiofx/audioiirfilter.c: (gst_audio_iir_filter_base_init),
(gst_audio_iir_filter_class_init),
(gst_audio_iir_filter_update_coefficients),
(gst_audio_iir_filter_init), (gst_audio_iir_filter_setup),
(gst_audio_iir_filter_finalize),
(gst_audio_iir_filter_set_property),
(gst_audio_iir_filter_get_property):
* gst/audiofx/audioiirfilter.h:
Add audioiirfilter and audiofirfilter elements which allow
generic IIR/FIR filters to be implemented by providing the
filter coefficients. Fixes bug #567577.
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-good-plugins-docs.sgml:
* docs/plugins/gst-plugins-good-plugins-sections.txt:
* docs/plugins/gst-plugins-good-plugins.args:
* docs/plugins/gst-plugins-good-plugins.hierarchy:
* docs/plugins/gst-plugins-good-plugins.signals:
* docs/plugins/inspect/plugin-alaw.xml:
* docs/plugins/inspect/plugin-audiofx.xml:
* docs/plugins/inspect/plugin-avi.xml:
* docs/plugins/inspect/plugin-flac.xml:
* docs/plugins/inspect/plugin-mulaw.xml:
* docs/plugins/inspect/plugin-video4linux2.xml:
* docs/plugins/inspect/plugin-wavparse.xml:
Add documentation for the audioiirfilter and audiofirfilter
elements.
* tests/check/Makefile.am:
* tests/check/elements/audiofirfilter.c: (on_message),
(on_rate_changed), (on_handoff), (GST_START_TEST),
(audiofirfilter_suite):
* tests/check/elements/audioiirfilter.c: (on_message),
(on_rate_changed), (on_handoff), (GST_START_TEST),
(audioiirfilter_suite):
* tests/examples/Makefile.am:
* tests/examples/audiofx/Makefile.am:
* tests/examples/audiofx/firfilter-example.c: (on_message),
(on_rate_changed), (main):
* tests/examples/audiofx/iirfilter-example.c: (on_message),
(on_rate_changed), (main):
Add unit tests and example applications for the two filter
elements.
2009-01-13 19:23:57 +00:00
|
|
|
* To change the filter kernel whenever the sampling rate changes the
|
|
|
|
* "rate-changed" signal can be used. This should be done for most
|
|
|
|
* FIR filters as they're depending on the sampling rate.
|
2009-01-28 10:29:42 +00:00
|
|
|
*
|
|
|
|
* <refsect2>
|
Add audioiirfilter and audiofirfilter elements which allow generic IIR/FIR filters to be implemented by providing the...
Original commit message from CVS:
* configure.ac:
* gst/audiofx/Makefile.am:
* gst/audiofx/audiofirfilter.c: (gst_audio_fir_filter_base_init),
(gst_audio_fir_filter_class_init),
(gst_audio_fir_filter_update_kernel), (gst_audio_fir_filter_init),
(gst_audio_fir_filter_setup), (gst_audio_fir_filter_finalize),
(gst_audio_fir_filter_set_property),
(gst_audio_fir_filter_get_property):
* gst/audiofx/audiofirfilter.h:
* gst/audiofx/audiofx.c: (plugin_init):
* gst/audiofx/audioiirfilter.c: (gst_audio_iir_filter_base_init),
(gst_audio_iir_filter_class_init),
(gst_audio_iir_filter_update_coefficients),
(gst_audio_iir_filter_init), (gst_audio_iir_filter_setup),
(gst_audio_iir_filter_finalize),
(gst_audio_iir_filter_set_property),
(gst_audio_iir_filter_get_property):
* gst/audiofx/audioiirfilter.h:
Add audioiirfilter and audiofirfilter elements which allow
generic IIR/FIR filters to be implemented by providing the
filter coefficients. Fixes bug #567577.
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-good-plugins-docs.sgml:
* docs/plugins/gst-plugins-good-plugins-sections.txt:
* docs/plugins/gst-plugins-good-plugins.args:
* docs/plugins/gst-plugins-good-plugins.hierarchy:
* docs/plugins/gst-plugins-good-plugins.signals:
* docs/plugins/inspect/plugin-alaw.xml:
* docs/plugins/inspect/plugin-audiofx.xml:
* docs/plugins/inspect/plugin-avi.xml:
* docs/plugins/inspect/plugin-flac.xml:
* docs/plugins/inspect/plugin-mulaw.xml:
* docs/plugins/inspect/plugin-video4linux2.xml:
* docs/plugins/inspect/plugin-wavparse.xml:
Add documentation for the audioiirfilter and audiofirfilter
elements.
* tests/check/Makefile.am:
* tests/check/elements/audiofirfilter.c: (on_message),
(on_rate_changed), (on_handoff), (GST_START_TEST),
(audiofirfilter_suite):
* tests/check/elements/audioiirfilter.c: (on_message),
(on_rate_changed), (on_handoff), (GST_START_TEST),
(audioiirfilter_suite):
* tests/examples/Makefile.am:
* tests/examples/audiofx/Makefile.am:
* tests/examples/audiofx/firfilter-example.c: (on_message),
(on_rate_changed), (main):
* tests/examples/audiofx/iirfilter-example.c: (on_message),
(on_rate_changed), (main):
Add unit tests and example applications for the two filter
elements.
2009-01-13 19:23:57 +00:00
|
|
|
* <title>Example application</title>
|
2009-01-28 10:29:42 +00:00
|
|
|
* |[
|
|
|
|
* <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" parse="text" href="../../../../tests/examples/audiofx/firfilter-example.c" />
|
|
|
|
* ]|
|
Add audioiirfilter and audiofirfilter elements which allow generic IIR/FIR filters to be implemented by providing the...
Original commit message from CVS:
* configure.ac:
* gst/audiofx/Makefile.am:
* gst/audiofx/audiofirfilter.c: (gst_audio_fir_filter_base_init),
(gst_audio_fir_filter_class_init),
(gst_audio_fir_filter_update_kernel), (gst_audio_fir_filter_init),
(gst_audio_fir_filter_setup), (gst_audio_fir_filter_finalize),
(gst_audio_fir_filter_set_property),
(gst_audio_fir_filter_get_property):
* gst/audiofx/audiofirfilter.h:
* gst/audiofx/audiofx.c: (plugin_init):
* gst/audiofx/audioiirfilter.c: (gst_audio_iir_filter_base_init),
(gst_audio_iir_filter_class_init),
(gst_audio_iir_filter_update_coefficients),
(gst_audio_iir_filter_init), (gst_audio_iir_filter_setup),
(gst_audio_iir_filter_finalize),
(gst_audio_iir_filter_set_property),
(gst_audio_iir_filter_get_property):
* gst/audiofx/audioiirfilter.h:
Add audioiirfilter and audiofirfilter elements which allow
generic IIR/FIR filters to be implemented by providing the
filter coefficients. Fixes bug #567577.
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-good-plugins-docs.sgml:
* docs/plugins/gst-plugins-good-plugins-sections.txt:
* docs/plugins/gst-plugins-good-plugins.args:
* docs/plugins/gst-plugins-good-plugins.hierarchy:
* docs/plugins/gst-plugins-good-plugins.signals:
* docs/plugins/inspect/plugin-alaw.xml:
* docs/plugins/inspect/plugin-audiofx.xml:
* docs/plugins/inspect/plugin-avi.xml:
* docs/plugins/inspect/plugin-flac.xml:
* docs/plugins/inspect/plugin-mulaw.xml:
* docs/plugins/inspect/plugin-video4linux2.xml:
* docs/plugins/inspect/plugin-wavparse.xml:
Add documentation for the audioiirfilter and audiofirfilter
elements.
* tests/check/Makefile.am:
* tests/check/elements/audiofirfilter.c: (on_message),
(on_rate_changed), (on_handoff), (GST_START_TEST),
(audiofirfilter_suite):
* tests/check/elements/audioiirfilter.c: (on_message),
(on_rate_changed), (on_handoff), (GST_START_TEST),
(audioiirfilter_suite):
* tests/examples/Makefile.am:
* tests/examples/audiofx/Makefile.am:
* tests/examples/audiofx/firfilter-example.c: (on_message),
(on_rate_changed), (main):
* tests/examples/audiofx/iirfilter-example.c: (on_message),
(on_rate_changed), (main):
Add unit tests and example applications for the two filter
elements.
2009-01-13 19:23:57 +00:00
|
|
|
* </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 "audiofirfilter.h"
|
|
|
|
|
|
|
|
#define GST_CAT_DEFAULT gst_audio_fir_filter_debug
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
|
|
|
|
|
|
|
|
enum
|
|
|
|
{
|
|
|
|
SIGNAL_RATE_CHANGED,
|
|
|
|
LAST_SIGNAL
|
|
|
|
};
|
|
|
|
|
|
|
|
enum
|
|
|
|
{
|
|
|
|
PROP_0,
|
|
|
|
PROP_KERNEL,
|
|
|
|
PROP_LATENCY
|
|
|
|
};
|
|
|
|
|
|
|
|
static guint gst_audio_fir_filter_signals[LAST_SIGNAL] = { 0, };
|
|
|
|
|
|
|
|
#define DEBUG_INIT(bla) \
|
|
|
|
GST_DEBUG_CATEGORY_INIT (gst_audio_fir_filter_debug, "audiofirfilter", 0, \
|
|
|
|
"Generic audio FIR filter plugin");
|
|
|
|
|
|
|
|
GST_BOILERPLATE_FULL (GstAudioFIRFilter, gst_audio_fir_filter, GstAudioFilter,
|
|
|
|
GST_TYPE_AUDIO_FX_BASE_FIR_FILTER, DEBUG_INIT);
|
|
|
|
|
|
|
|
static void gst_audio_fir_filter_set_property (GObject * object, guint prop_id,
|
|
|
|
const GValue * value, GParamSpec * pspec);
|
|
|
|
static void gst_audio_fir_filter_get_property (GObject * object, guint prop_id,
|
|
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static void gst_audio_fir_filter_finalize (GObject * object);
|
|
|
|
|
|
|
|
static gboolean gst_audio_fir_filter_setup (GstAudioFilter * base,
|
|
|
|
GstRingBufferSpec * format);
|
|
|
|
|
|
|
|
/* Element class */
|
|
|
|
static void
|
|
|
|
gst_audio_fir_filter_base_init (gpointer g_class)
|
|
|
|
{
|
|
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
|
|
|
|
|
|
|
|
gst_element_class_set_details_simple (element_class,
|
|
|
|
"Audio FIR filter", "Filter/Effect/Audio",
|
|
|
|
"Generic audio FIR filter with custom filter kernel",
|
|
|
|
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_audio_fir_filter_class_init (GstAudioFIRFilterClass * klass)
|
|
|
|
{
|
|
|
|
GObjectClass *gobject_class = (GObjectClass *) klass;
|
|
|
|
GstAudioFilterClass *filter_class = (GstAudioFilterClass *) klass;
|
|
|
|
|
|
|
|
gobject_class->set_property = gst_audio_fir_filter_set_property;
|
|
|
|
gobject_class->get_property = gst_audio_fir_filter_get_property;
|
|
|
|
gobject_class->finalize = gst_audio_fir_filter_finalize;
|
|
|
|
|
|
|
|
g_object_class_install_property (gobject_class, PROP_KERNEL,
|
|
|
|
g_param_spec_value_array ("kernel", "Filter Kernel",
|
|
|
|
"Filter kernel for the FIR filter",
|
|
|
|
g_param_spec_double ("Element", "Filter Kernel Element",
|
|
|
|
"Element of the filter kernel", -G_MAXDOUBLE, G_MAXDOUBLE, 0.0,
|
|
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS),
|
|
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_LATENCY,
|
|
|
|
g_param_spec_uint64 ("latency", "Latecy",
|
|
|
|
"Filter latency in samples",
|
|
|
|
0, G_MAXUINT64, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
|
|
|
|
filter_class->setup = GST_DEBUG_FUNCPTR (gst_audio_fir_filter_setup);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* GstAudioFIRFilter::rate-changed:
|
|
|
|
* @filter: the filter on which the signal is emitted
|
|
|
|
* @rate: the new sampling rate
|
|
|
|
*
|
|
|
|
* Will be emitted when the sampling rate changes. The callbacks
|
|
|
|
* will be called from the streaming thread and processing will
|
|
|
|
* stop until the event is handled.
|
|
|
|
*/
|
|
|
|
gst_audio_fir_filter_signals[SIGNAL_RATE_CHANGED] =
|
|
|
|
g_signal_new ("rate-changed", G_TYPE_FROM_CLASS (klass),
|
|
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstAudioFIRFilterClass, rate_changed),
|
|
|
|
NULL, NULL, gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_audio_fir_filter_update_kernel (GstAudioFIRFilter * self, GValueArray * va)
|
|
|
|
{
|
|
|
|
gdouble *kernel;
|
|
|
|
guint i;
|
|
|
|
|
|
|
|
gst_audio_fx_base_fir_filter_push_residue (GST_AUDIO_FX_BASE_FIR_FILTER
|
|
|
|
(self));
|
|
|
|
|
|
|
|
if (va) {
|
|
|
|
if (self->kernel)
|
|
|
|
g_value_array_free (self->kernel);
|
|
|
|
|
|
|
|
self->kernel = va;
|
|
|
|
}
|
|
|
|
|
|
|
|
kernel = g_new (gdouble, self->kernel->n_values);
|
|
|
|
|
|
|
|
for (i = 0; i < self->kernel->n_values; i++) {
|
|
|
|
GValue *v = g_value_array_get_nth (self->kernel, i);
|
|
|
|
kernel[i] = g_value_get_double (v);
|
|
|
|
}
|
|
|
|
|
|
|
|
gst_audio_fx_base_fir_filter_set_kernel (GST_AUDIO_FX_BASE_FIR_FILTER (self),
|
|
|
|
kernel, self->kernel->n_values, self->latency);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_audio_fir_filter_init (GstAudioFIRFilter * self,
|
|
|
|
GstAudioFIRFilterClass * g_class)
|
|
|
|
{
|
|
|
|
GValue v = { 0, };
|
|
|
|
GValueArray *va;
|
|
|
|
|
|
|
|
self->latency = 0;
|
|
|
|
va = g_value_array_new (1);
|
|
|
|
|
|
|
|
g_value_init (&v, G_TYPE_DOUBLE);
|
|
|
|
g_value_set_double (&v, 1.0);
|
|
|
|
g_value_array_append (va, &v);
|
|
|
|
g_value_unset (&v);
|
|
|
|
gst_audio_fir_filter_update_kernel (self, va);
|
|
|
|
|
|
|
|
self->lock = g_mutex_new ();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* GstAudioFilter vmethod implementations */
|
|
|
|
|
|
|
|
/* get notified of caps and plug in the correct process function */
|
|
|
|
static gboolean
|
|
|
|
gst_audio_fir_filter_setup (GstAudioFilter * base, GstRingBufferSpec * format)
|
|
|
|
{
|
|
|
|
GstAudioFIRFilter *self = GST_AUDIO_FIR_FILTER (base);
|
|
|
|
|
|
|
|
if (self->rate != format->rate) {
|
|
|
|
g_signal_emit (G_OBJECT (self),
|
|
|
|
gst_audio_fir_filter_signals[SIGNAL_RATE_CHANGED], 0, format->rate);
|
|
|
|
self->rate = format->rate;
|
|
|
|
}
|
|
|
|
|
|
|
|
return GST_AUDIO_FILTER_CLASS (parent_class)->setup (base, format);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_audio_fir_filter_finalize (GObject * object)
|
|
|
|
{
|
|
|
|
GstAudioFIRFilter *self = GST_AUDIO_FIR_FILTER (object);
|
|
|
|
|
|
|
|
g_mutex_free (self->lock);
|
|
|
|
self->lock = NULL;
|
|
|
|
|
|
|
|
if (self->kernel)
|
|
|
|
g_value_array_free (self->kernel);
|
|
|
|
self->kernel = NULL;
|
|
|
|
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_audio_fir_filter_set_property (GObject * object, guint prop_id,
|
|
|
|
const GValue * value, GParamSpec * pspec)
|
|
|
|
{
|
|
|
|
GstAudioFIRFilter *self = GST_AUDIO_FIR_FILTER (object);
|
|
|
|
|
|
|
|
g_return_if_fail (GST_IS_AUDIO_FIR_FILTER (self));
|
|
|
|
|
|
|
|
switch (prop_id) {
|
|
|
|
case PROP_KERNEL:
|
|
|
|
g_mutex_lock (self->lock);
|
|
|
|
gst_audio_fx_base_fir_filter_push_residue (GST_AUDIO_FX_BASE_FIR_FILTER
|
|
|
|
(self));
|
|
|
|
|
|
|
|
gst_audio_fir_filter_update_kernel (self, g_value_dup_boxed (value));
|
|
|
|
g_mutex_unlock (self->lock);
|
|
|
|
break;
|
|
|
|
case PROP_LATENCY:
|
|
|
|
g_mutex_lock (self->lock);
|
|
|
|
self->latency = g_value_get_uint64 (value);
|
|
|
|
gst_audio_fir_filter_update_kernel (self, NULL);
|
|
|
|
g_mutex_unlock (self->lock);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_audio_fir_filter_get_property (GObject * object, guint prop_id,
|
|
|
|
GValue * value, GParamSpec * pspec)
|
|
|
|
{
|
|
|
|
GstAudioFIRFilter *self = GST_AUDIO_FIR_FILTER (object);
|
|
|
|
|
|
|
|
switch (prop_id) {
|
|
|
|
case PROP_KERNEL:
|
|
|
|
g_value_set_boxed (value, self->kernel);
|
|
|
|
break;
|
|
|
|
case PROP_LATENCY:
|
|
|
|
g_value_set_uint64 (value, self->latency);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|