mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-18 22:36:33 +00:00
Code Issues 1 Projects Releases Wiki Activity

gst/audiopanorama/: die! die! die! you should never have been there

Browse source 
Original commit message from CVS:
* gst/audiopanorama/.cvsignore:
* gst/audiopanorama/Makefile.am:
* gst/audiopanorama/audiofx.c:
* gst/audiopanorama/audiopanorama.c:
* gst/audiopanorama/audiopanorama.h:
die! die! die! you should never have been there
This commit is contained in:
Stefan Kost 2006-08-21 19:34:03 +00:00
parent 40c2bef1c3
commit 539c398b3e
6 changed files with 9 additions and 495 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
ChangeLog
View file

@ -1,3 +1,12 @@
2006-08-21 Stefan Kost <ensonic@users.sf.net>
* gst/audiopanorama/.cvsignore:
* gst/audiopanorama/Makefile.am:
* gst/audiopanorama/audiofx.c:
* gst/audiopanorama/audiopanorama.c:
* gst/audiopanorama/audiopanorama.h:
die! die! die! you should never have been there
2006-08-21 Jan Schmidt <thaytan@mad.scientist.com>
* tests/check/elements/audiopanorama.c: (GST_START_TEST):

6
gst/audiopanorama/.gitignore vendored
View file

@ -1,6 +0,0 @@
.deps
.libs
*.lo
*.la
Makefile
Makefile.in

19
gst/audiopanorama/Makefile.am
View file

@ -1,19 +0,0 @@
# plugindir is set in configure
plugin_LTLIBRARIES = libgstaudiofxgood.la
# sources used to compile this plug-in
libgstaudiofxgood_la_SOURCES = audiofx.c\
audiopanorama.c
# flags used to compile this plugin
libgstaudiofxgood_la_CFLAGS = $(GST_CFLAGS) \
$(GST_BASE_CFLAGS) \
$(GST_CONTROLLER_CFLAGS)
libgstaudiofxgood_la_LIBADD = $(GST_LIBS) \
$(GST_BASE_LIBS) \
$(GST_CONTROLLER_LIBS)
libgstaudiofxgood_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
# headers we need but don't want installed
noinst_HEADERS = audiopanorama.h

49
gst/audiopanorama/audiofx.c
View file

@ -1,49 +0,0 @@
/*
* GStreamer
* Copyright (C) 2006 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/controller/gstcontroller.h>
#include "audiopanorama.h"
/* entry point to initialize the plug-in
* initialize the plug-in itself
* register the element factories and pad templates
* register the features
*/
static gboolean
plugin_init (GstPlugin * plugin)
{
/* initialize gst controller library */
gst_controller_init (NULL, NULL);
return gst_element_register (plugin, "audiopanorama", GST_RANK_NONE,
GST_TYPE_AUDIO_PANORAMA);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"audiofxgood",
"Audio effects plugin",
plugin_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")

365
gst/audiopanorama/audiopanorama.c
View file

@ -1,365 +0,0 @@
/*
* GStreamer
* Copyright (C) 2006 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:gstaudiopanorama
* @short_description: audio strereo pan effect
*
* <refsect2>
* Echo effect with controllable effect-ratio, delay-time and feedback.
* <title>Example launch line</title>
* <para>
* <programlisting>
* gst-launch audiotestsrc wave=saw ! audiopanorama panorama=-100 ! alsasink
* gst-launch filesrc location="melo1.ogg" ! oggdemux ! vorbisdec ! audioconvert ! audiopanorama panorama=-100 ! alsasink
* </programlisting>
* In the latter example the echo is applied to the input signal of the
* soundcard (like a microphone).
* </para>
* </refsect2>
*/
/* FIXME: also support 32/64 bit float audio, and maybe 8/24 bit integer */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gst/controller/gstcontroller.h>
#include "audiopanorama.h"
#define GST_CAT_DEFAULT gst_audio_panorama_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
static const GstElementDetails element_details =
GST_ELEMENT_DETAILS ("AudioPanorama",
"Filter/Effect/Audio",
"Positions audio streams in the stereo panorama",
"Stefan Kost <ensonic@users.sf.net>");
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_PANORAMA
};
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"rate = (int) [ 1, MAX ], "
"channels = (int) [ 1, 2 ], "
"endianness = (int) BYTE_ORDER, "
"width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
);
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"rate = (int) [ 1, MAX ], "
"channels = (int) 2, "
"endianness = (int) BYTE_ORDER, "
"width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
);
#define DEBUG_INIT(bla) \
GST_DEBUG_CATEGORY_INIT (gst_audio_panorama_debug, "audiopanorama", 0, "audiopanorama plugin");
GST_BOILERPLATE_FULL (GstAudioPanorama, gst_audio_panorama, GstBaseTransform,
GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
static void gst_audio_panorama_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_audio_panorama_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_audio_panorama_get_unit_size (GstBaseTransform * base,
GstCaps * caps, guint * size);
static GstCaps *gst_audio_panorama_transform_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps);
static gboolean gst_audio_panorama_set_caps (GstBaseTransform * base,
GstCaps * incaps, GstCaps * outcaps);
static void gst_audio_panorama_transform_m2s (GstAudioPanorama * filter,
gint16 * idata, gint16 * odata, guint num_samples);
static void gst_audio_panorama_transform_s2s (GstAudioPanorama * filter,
gint16 * idata, gint16 * odata, guint num_samples);
static GstFlowReturn gst_audio_panorama_transform (GstBaseTransform * base,
GstBuffer * inbuf, GstBuffer * outbuf);
/* GObject vmethod implementations */
static void
gst_audio_panorama_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_template));
gst_element_class_set_details (element_class, &element_details);
}
static void
gst_audio_panorama_class_init (GstAudioPanoramaClass * klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
gobject_class->set_property = gst_audio_panorama_set_property;
gobject_class->get_property = gst_audio_panorama_get_property;
g_object_class_install_property (gobject_class, PROP_PANORAMA,
g_param_spec_int ("panorama", "Panorama",
"Position in stereo panorama (-100 left -> 100 right)", -100, 100, 0,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size =
GST_DEBUG_FUNCPTR (gst_audio_panorama_get_unit_size);
GST_BASE_TRANSFORM_CLASS (klass)->transform_caps =
GST_DEBUG_FUNCPTR (gst_audio_panorama_transform_caps);
GST_BASE_TRANSFORM_CLASS (klass)->set_caps =
GST_DEBUG_FUNCPTR (gst_audio_panorama_set_caps);
GST_BASE_TRANSFORM_CLASS (klass)->transform =
GST_DEBUG_FUNCPTR (gst_audio_panorama_transform);
}
static void
gst_audio_panorama_init (GstAudioPanorama * filter,
GstAudioPanoramaClass * klass)
{
filter->panorama = 0;
}
static void
gst_audio_panorama_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAudioPanorama *filter = GST_AUDIO_PANORAMA (object);
switch (prop_id) {
case PROP_PANORAMA:
filter->panorama = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_audio_panorama_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAudioPanorama *filter = GST_AUDIO_PANORAMA (object);
switch (prop_id) {
case PROP_PANORAMA:
g_value_set_int (value, filter->panorama);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* GstBaseTransform vmethod implementations */
static gboolean
gst_audio_panorama_get_unit_size (GstBaseTransform * base, GstCaps * caps,
guint * size)
{
gint width, channels;
GstStructure *structure;
gboolean ret;
g_assert (size);
/* this works for both float and int */
structure = gst_caps_get_structure (caps, 0);
ret = gst_structure_get_int (structure, "width", &width);
ret &= gst_structure_get_int (structure, "channels", &channels);
*size = width * channels / 8;
return ret;
}
static GstCaps *
gst_audio_panorama_transform_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps)
{
GstCaps *res;
GstStructure *structure;
/* transform caps gives one single caps so we can just replace
* the channel property with our range. */
res = gst_caps_copy (caps);
structure = gst_caps_get_structure (res, 0);
if (direction == GST_PAD_SRC) {
GST_INFO ("allow 1-2 channels");
gst_structure_set (structure, "channels", GST_TYPE_INT_RANGE, 1, 2, NULL);
} else {
GST_INFO ("allow 2 channels");
gst_structure_set (structure, "channels", G_TYPE_INT, 2, NULL);
}
return res;
}
static gboolean
gst_audio_panorama_set_caps (GstBaseTransform * base, GstCaps * incaps,
GstCaps * outcaps)
{
GstAudioPanorama *filter = GST_AUDIO_PANORAMA (base);
const GstStructure *structure;
gboolean ret;
gint channels;
/*GST_INFO ("incaps are %" GST_PTR_FORMAT, incaps); */
structure = gst_caps_get_structure (incaps, 0);
ret = gst_structure_get_int (structure, "channels", &channels);
if (!ret)
goto no_channels;
/* FIXME: also check width and gst_structure_get_name()?int/float */
GST_DEBUG ("try to process input with %d channels", channels);
/* set processing function */
switch (channels) {
case 1:
filter->process = gst_audio_panorama_transform_m2s;
ret = TRUE;
break;
case 2:
filter->process = gst_audio_panorama_transform_s2s;
ret = TRUE;
break;
default:
filter->process = NULL;
ret = FALSE;
GST_WARNING ("can't process input with %d channels", channels);
}
no_channels:
GST_DEBUG ("no channels in caps");
return ret;
}
static void
gst_audio_panorama_transform_m2s (GstAudioPanorama * filter, gint16 * idata,
gint16 * odata, guint num_samples)
{
guint i;
gdouble val;
glong lval, rval;
gdouble rpan, lpan;
/* pan: -100 0 100
* lpan: 1.0 0.5 0.0
* rpan: 0.0 0.5 1.0
*/
rpan = (gdouble) (filter->panorama + 100) / 200.0;
lpan = 1.0 - rpan;
for (i = 0; i < num_samples; i++) {
val = (gdouble) * idata++;
lval = (glong) (val * lpan);
rval = (glong) (val * rpan);
*odata++ = (gint16) CLAMP (lval, G_MININT16, G_MAXINT16);
*odata++ = (gint16) CLAMP (rval, G_MININT16, G_MAXINT16);
}
}
static void
gst_audio_panorama_transform_s2s (GstAudioPanorama * filter, gint16 * idata,
gint16 * odata, guint num_samples)
{
guint i;
glong lval, rval;
gdouble lival, rival;
gdouble lrpan, llpan, rrpan, rlpan;
/* pan: -100 0 100
* llpan: 1.0 1.0 0.0
* lrpan: 1.0 0.0 0.0
* rrpan: 0.0 1.0 1.0
* rlpan: 0.0 0.0 1.0
*/
if (filter->panorama > 0) {
rlpan = (gdouble) filter->panorama / 100.0;
llpan = 1.0 - rlpan;
lrpan = 0.0;
rrpan = 1.0;
} else {
rrpan = (gdouble) (100 + filter->panorama) / 100.0;
lrpan = 1.0 - rrpan;
rlpan = 0.0;
llpan = 1.0;
}
for (i = 0; i < num_samples; i++) {
lival = (gdouble) * idata++;
rival = (gdouble) * idata++;
lval = lival * llpan + rival * lrpan;
rval = lival * rlpan + rival * rrpan;
*odata++ = (gint16) CLAMP (lval, G_MININT16, G_MAXINT16);
*odata++ = (gint16) CLAMP (rval, G_MININT16, G_MAXINT16);
}
}
/* this function does the actual processing
*/
static GstFlowReturn
gst_audio_panorama_transform (GstBaseTransform * base, GstBuffer * inbuf,
GstBuffer * outbuf)
{
GstAudioPanorama *filter = GST_AUDIO_PANORAMA (base);
guint num_samples = GST_BUFFER_SIZE (outbuf) / (2 * sizeof (gint16));
if (!gst_buffer_is_writable (outbuf))
return GST_FLOW_OK;
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (outbuf)))
gst_object_sync_values (G_OBJECT (filter), GST_BUFFER_TIMESTAMP (outbuf));
filter->process (filter, (gint16 *) GST_BUFFER_DATA (inbuf),
(gint16 *) GST_BUFFER_DATA (outbuf), num_samples);
return GST_FLOW_OK;
}

56
gst/audiopanorama/audiopanorama.h
View file

@ -1,56 +0,0 @@
/*
* GStreamer
* Copyright (C) 2006 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.
*/
#ifndef __GST_AUDIO_PANORAMA_H__
#define __GST_AUDIO_PANORAMA_H__
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
G_BEGIN_DECLS
#define GST_TYPE_AUDIO_PANORAMA (gst_audio_panorama_get_type())
#define GST_AUDIO_PANORAMA(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_PANORAMA,GstAudioPanorama))
#define GST_IS_AUDIO_PANORAMA(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_PANORAMA))
#define GST_AUDIO_PANORAMA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_PANORAMA,GstAudioPanoramaClass))
#define GST_IS_AUDIO_PANORAMA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_PANORAMA))
#define GST_AUDIO_PANORAMA_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_PANORAMA,GstAudioPanoramaClass))
typedef struct _GstAudioPanorama GstAudioPanorama;
typedef struct _GstAudioPanoramaClass GstAudioPanoramaClass;
struct _GstAudioPanorama {
GstBaseTransform element;
gint panorama;
/* < private > */
void (*process)(GstAudioPanorama*, gint16*, gint16*, guint);
};
struct _GstAudioPanoramaClass {
GstBaseTransformClass parent_class;
};
GType gst_audio_panorama_get_type (void);
G_END_DECLS
#endif /* __GST_AUDIO_PANORAMA_H__ */