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ext/soundtouch/: Add BPM detection plugin based on SoundTouch's libBPM.

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Original commit message from CVS:
* ext/soundtouch/Makefile.am:
* ext/soundtouch/gstbpmdetect.cc:
* ext/soundtouch/gstbpmdetect.hh:
* ext/soundtouch/plugin.c: (plugin_init):
Add BPM detection plugin based on SoundTouch's libBPM.
* ext/soundtouch/gstpitch.cc:
Allow sample rates until MAX instead of only 48kHz and remove the
buffer-frames field from that caps.
Clear the remaining samples completely when necessary to get into
a clean state again.
This commit is contained in:
Sebastian Dröge 2008-01-27 05:56:04 +00:00
parent fe38597aee
commit 27fbdb97d1
6 changed files with 357 additions and 26 deletions
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14
ChangeLog
View file

@ -1,3 +1,17 @@
2008-01-27 Sebastian Dröge <slomo@circular-chaos.org>
* ext/soundtouch/Makefile.am:
* ext/soundtouch/gstbpmdetect.cc:
* ext/soundtouch/gstbpmdetect.hh:
* ext/soundtouch/plugin.c: (plugin_init):
Add BPM detection plugin based on SoundTouch's libBPM.
* ext/soundtouch/gstpitch.cc:
Allow sample rates until MAX instead of only 48kHz and remove the
buffer-frames field from that caps.
Clear the remaining samples completely when necessary to get into
a clean state again.
2008-01-26 Sebastian Dröge <slomo@circular-chaos.org>
* gst/filter/gstbpwsinc.c: (gst_bpwsinc_class_init):

16
ext/soundtouch/Makefile.am
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@ -1,9 +1,13 @@
plugin_LTLIBRARIES = libgstpitch.la
plugin_LTLIBRARIES = libgstsoundtouch.la
libgstpitch_la_SOURCES = gstpitch.cc
libgstsoundtouch_la_SOURCES = \
plugin.c \
gstpitch.cc \
gstbpmdetect.cc
libgstpitch_la_CXXFLAGS = $(GST_BASE_CFLAGS) $(GST_CFLAGS) $(SOUNDTOUCH_CFLAGS)
libgstpitch_la_LIBADD = $(GST_BASE_LIBS) $(GST_CONTROLLER_LIBS) $(GST_LIBS) $(SOUNDTOUCH_LIBS)
libgstpitch_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstsoundtouch_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CFLAGS) $(SOUNDTOUCH_CFLAGS)
libgstsoundtouch_la_CXXFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CFLAGS) $(SOUNDTOUCH_CFLAGS)
libgstsoundtouch_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) $(GST_CONTROLLER_LIBS) $(GST_LIBS) $(SOUNDTOUCH_LIBS) -lgstaudio-$(GST_MAJORMINOR) -lBPM $(LIBM)
libgstsoundtouch_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gstpitch.hh
noinst_HEADERS = gstpitch.hh gstbpmdetect.hh

223
ext/soundtouch/gstbpmdetect.cc Normal file
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@ -0,0 +1,223 @@
/* GStreamer
* Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org>
*
* 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.
*/
#define FLOAT_SAMPLES 1
#include <soundtouch/BPMDetect.h>
/* FIXME: workaround for SoundTouch.h of version 1.3.1 defining those
* variables while it shouldn't. */
#undef VERSION
#undef PACKAGE_VERSION
#undef PACKAGE_TARNAME
#undef PACKAGE_STRING
#undef PACKAGE_NAME
#undef PACKAGE_BUGREPORT
#undef PACKAGE
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/audio/audio.h>
#include <gst/audio/gstaudiofilter.h>
#include <math.h>
#include <string.h>
#include "gstbpmdetect.hh"
GST_DEBUG_CATEGORY_STATIC (gst_bpm_detect_debug);
#define GST_CAT_DEFAULT gst_bpm_detect_debug
#define GST_BPM_DETECT_GET_PRIVATE(o) (o->priv)
struct _GstBPMDetectPrivate
{
gfloat bpm;
BPMDetect *detect;
};
#define ALLOWED_CAPS \
"audio/x-raw-float, " \
" width = (int) 32, " \
" endianness = (int) BYTE_ORDER, " \
" rate = (int) [ 8000, MAX ], " \
" channels = (int) [ 1, 2 ]"
GST_BOILERPLATE (GstBPMDetect, gst_bpm_detect, GstAudioFilter,
GST_TYPE_AUDIO_FILTER);
static void gst_bpm_detect_finalize (GObject * object);
static gboolean gst_bpm_detect_stop (GstBaseTransform * trans);
static gboolean gst_bpm_detect_event (GstBaseTransform * trans,
GstEvent * event);
static GstFlowReturn gst_bpm_detect_transform_ip (GstBaseTransform * trans,
GstBuffer * in);
static gboolean gst_bpm_detect_setup (GstAudioFilter * filter,
GstRingBufferSpec * format);
static void
gst_bpm_detect_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstCaps *caps;
gst_element_class_set_details_simple (element_class, "BPM Detector",
"Filter/Analyzer/Audio", "Detect the BPM of an audio stream",
"Sebastian Dröge <slomo@circular-chaos.org>");
caps = gst_caps_from_string (ALLOWED_CAPS);
gst_audio_filter_class_add_pad_templates (GST_AUDIO_FILTER_CLASS (g_class),
caps);
gst_caps_unref (caps);
}
static void
gst_bpm_detect_class_init (GstBPMDetectClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstBaseTransformClass *trans_class = GST_BASE_TRANSFORM_CLASS (klass);
GstAudioFilterClass *filter_class = GST_AUDIO_FILTER_CLASS (klass);
GST_DEBUG_CATEGORY_INIT (gst_bpm_detect_debug, "bpm_detect", 0,
"audio bpm detection element");
gobject_class->finalize = gst_bpm_detect_finalize;
trans_class->stop = GST_DEBUG_FUNCPTR (gst_bpm_detect_stop);
trans_class->event = GST_DEBUG_FUNCPTR (gst_bpm_detect_event);
trans_class->transform_ip = GST_DEBUG_FUNCPTR (gst_bpm_detect_transform_ip);
trans_class->passthrough_on_same_caps = TRUE;
filter_class->setup = GST_DEBUG_FUNCPTR (gst_bpm_detect_setup);
g_type_class_add_private (gobject_class, sizeof (GstBPMDetectPrivate));
}
static void
gst_bpm_detect_init (GstBPMDetect * bpm_detect, GstBPMDetectClass * g_class)
{
bpm_detect->priv = G_TYPE_INSTANCE_GET_PRIVATE ((bpm_detect),
GST_TYPE_BPM_DETECT, GstBPMDetectPrivate);
bpm_detect->priv->detect = NULL;
bpm_detect->bpm = 0.0;
}
static void
gst_bpm_detect_finalize (GObject * object)
{
GstBPMDetect *bpm_detect = GST_BPM_DETECT (object);
if (bpm_detect->priv->detect) {
delete bpm_detect->priv->detect;
bpm_detect->priv->detect = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_bpm_detect_stop (GstBaseTransform * trans)
{
GstBPMDetect *bpm_detect = GST_BPM_DETECT (trans);
if (bpm_detect->priv->detect) {
delete bpm_detect->priv->detect;
bpm_detect->priv->detect = NULL;
}
bpm_detect->bpm = 0.0;
return TRUE;
}
static gboolean
gst_bpm_detect_event (GstBaseTransform * trans, GstEvent * event)
{
GstBPMDetect *bpm_detect = GST_BPM_DETECT (trans);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:
case GST_EVENT_EOS:
case GST_EVENT_NEWSEGMENT:
if (bpm_detect->priv->detect) {
delete bpm_detect->priv->detect;
bpm_detect->priv->detect = NULL;
}
bpm_detect->bpm = 0.0;
break;
default:
break;
}
return TRUE;
}
static gboolean
gst_bpm_detect_setup (GstAudioFilter * filter, GstRingBufferSpec * format)
{
GstBPMDetect *bpm_detect = GST_BPM_DETECT (filter);
if (bpm_detect->priv->detect) {
delete bpm_detect->priv->detect;
bpm_detect->priv->detect = NULL;
}
return TRUE;
}
static GstFlowReturn
gst_bpm_detect_transform_ip (GstBaseTransform * trans, GstBuffer * in)
{
GstBPMDetect *bpm_detect = GST_BPM_DETECT (trans);
GstAudioFilter *filter = GST_AUDIO_FILTER (trans);
gint nsamples;
gfloat *data;
gfloat bpm;
if (filter->format.channels == 0 || filter->format.rate == 0) {
GST_ERROR_OBJECT (bpm_detect, "No channels or rate set yet");
return GST_FLOW_ERROR;
}
nsamples = GST_BUFFER_SIZE (in) / (4 * filter->format.channels);
if (!bpm_detect->priv->detect)
bpm_detect->priv->detect =
new BPMDetect (filter->format.channels, filter->format.rate);
data = (gfloat *) g_memdup (GST_BUFFER_DATA (in), GST_BUFFER_SIZE (in));
bpm_detect->priv->detect->inputSamples (data, nsamples);
g_free (data);
bpm = bpm_detect->priv->detect->getBpm ();
if (bpm != 0.0 && fabs (bpm_detect->bpm - bpm) >= 1.0) {
GstTagList *tags = gst_tag_list_new ();
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE_ALL, GST_TAG_BEATS_PER_MINUTE,
bpm, NULL);
gst_element_found_tags (GST_ELEMENT (bpm_detect), tags);
GST_INFO_OBJECT (bpm_detect, "Detected BPM: %lf\n", bpm);
bpm_detect->bpm = bpm;
}
return GST_FLOW_OK;
}

58
ext/soundtouch/gstbpmdetect.hh Normal file
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@ -0,0 +1,58 @@
/* GStreamer
* Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org>
*
* 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.
*/
#ifndef __GST_BPM_DETECT_H__
#define __GST_BPM_DETECT_H__
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gst/audio/gstaudiofilter.h>
G_BEGIN_DECLS
#define GST_TYPE_BPM_DETECT (gst_bpm_detect_get_type())
#define GST_BPM_DETECT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BPM_DETECT,GstBPMDetect))
#define GST_IS_BPM_DETECT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BPM_DETECT))
#define GST_BPM_DETECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_BPM_DETECT,GstBPMDetectClass))
#define GST_IS_BPM_DETECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_BPM_DETECT))
typedef struct _GstBPMDetect GstBPMDetect;
typedef struct _GstBPMDetectClass GstBPMDetectClass;
typedef struct _GstBPMDetectPrivate GstBPMDetectPrivate;
struct _GstBPMDetect {
GstAudioFilter element;
gfloat bpm;
GstBPMDetectPrivate *priv;
};
struct _GstBPMDetectClass {
GstAudioFilterClass parent_class;
};
GType gst_bpm_detect_get_type (void);
G_END_DECLS
#endif /* __GST_BPM_DETECT_H__ */

29
ext/soundtouch/gstpitch.cc
View file

@ -62,11 +62,10 @@ enum
#define SUPPORTED_CAPS \
GST_STATIC_CAPS( \
"audio/x-raw-float, " \
"rate = (int) [ 8000, 48000 ], " \
"rate = (int) [ 8000, MAX ], " \
"channels = (int) [ 1, 2 ], " \
"endianness = (int) BYTE_ORDER, " \
"width = (int) 32, " \
"buffer-frames = (int) [ 0, MAX ]" \
"width = (int) 32" \
)
static GstStaticPadTemplate gst_pitch_sink_template =
@ -124,6 +123,9 @@ gst_pitch_class_init (GstPitchClass * klass)
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
GST_DEBUG_CATEGORY_INIT (pitch_debug, "pitch", 0,
"audio pitch control element");
gobject_class->set_property = gst_pitch_set_property;
gobject_class->get_property = gst_pitch_get_property;
gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_pitch_dispose);
@ -725,9 +727,11 @@ gst_pitch_sink_event (GstPad * pad, GstEvent * event)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:
gst_pitch_flush_buffer (pitch, FALSE);
pitch->priv->st->clear ();
break;
case GST_EVENT_EOS:
gst_pitch_flush_buffer (pitch, TRUE);
pitch->priv->st->clear ();
break;
case GST_EVENT_NEWSEGMENT:
if (!gst_pitch_process_segment (pitch, &event)) {
@ -737,6 +741,7 @@ gst_pitch_sink_event (GstPad * pad, GstEvent * event)
GST_PITCH_GET_PRIVATE (pitch)->pending_segment = event;
event = NULL;
}
pitch->priv->st->clear ();
break;
default:
break;
@ -812,6 +817,7 @@ gst_pitch_change_state (GstElement * element, GstStateChange transition)
case GST_STATE_CHANGE_READY_TO_PAUSED:
pitch->next_buffer_time = 0;
pitch->next_buffer_offset = 0;
pitch->priv->st->clear ();
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
@ -839,20 +845,3 @@ gst_pitch_change_state (GstElement * element, GstStateChange transition)
return ret;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
gst_controller_init (NULL, NULL);
GST_DEBUG_CATEGORY_INIT (pitch_debug, "pitch", 0,
"audio pitch control element");
return gst_element_register (plugin, "pitch", GST_RANK_NONE, GST_TYPE_PITCH);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"soundtouch",
"Audio Pitch Controller",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

43
ext/soundtouch/plugin.c Normal file
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@ -0,0 +1,43 @@
/* GStreamer soundtouch plugin
* Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gst/gst.h>
#include <gst/controller/gstcontroller.h>
#include "gstpitch.hh"
#include "gstbpmdetect.hh"
static gboolean
plugin_init (GstPlugin * plugin)
{
gst_controller_init (NULL, NULL);
return gst_element_register (plugin, "pitch", GST_RANK_NONE, GST_TYPE_PITCH)
&& gst_element_register (plugin, "bpmdetect", GST_RANK_NONE,
GST_TYPE_BPM_DETECT);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"soundtouch",
"Audio Pitch Controller & BPM Detection",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)