Commit 447ae144 authored by Sebastian Dröge's avatar Sebastian Dröge 🍵

gst/audiofx/: Add new audiofx element "audioinvert". This element swaps the...

gst/audiofx/: Add new audiofx element "audioinvert". This element swaps the upper and lower half of samples and can b...

Original commit message from CVS:
reviewed by: Stefan Kost  <ensonic@users.sf.net>
* gst/audiofx/Makefile.am:
* gst/audiofx/audiofx.c: (plugin_init):
* gst/audiofx/audioinvert.c: (gst_audio_invert_base_init),
(gst_audio_invert_class_init), (gst_audio_invert_init),
(gst_audio_invert_set_property), (gst_audio_invert_get_property),
(gst_audio_invert_set_caps), (gst_audio_invert_transform_int),
(gst_audio_invert_transform_float),
(gst_audio_invert_transform_ip):
* gst/audiofx/audioinvert.h:
Add new audiofx element "audioinvert". This element swaps the upper
and lower half of samples and can be used for example for a
wide-stereo effect. Fixes #396057
* 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/inspect/plugin-audiofx.xml:
Add docs for the audioinvert element and add them to the build system.
* tests/check/Makefile.am:
* tests/check/elements/audioinvert.c: (setup_invert),
(cleanup_invert), (GST_START_TEST), (invert_suite), (main):
Add unit test suite for the audioinvert element.
parent 60054f47
2007-01-23 Sebastian Dröge <slomo@circular-chaos.org>
reviewed by: Stefan Kost <ensonic@users.sf.net>
* gst/audiofx/Makefile.am:
* gst/audiofx/audiofx.c: (plugin_init):
* gst/audiofx/audioinvert.c: (gst_audio_invert_base_init),
(gst_audio_invert_class_init), (gst_audio_invert_init),
(gst_audio_invert_set_property), (gst_audio_invert_get_property),
(gst_audio_invert_set_caps), (gst_audio_invert_transform_int),
(gst_audio_invert_transform_float),
(gst_audio_invert_transform_ip):
* gst/audiofx/audioinvert.h:
Add new audiofx element "audioinvert". This element swaps the upper
and lower half of samples and can be used for example for a
wide-stereo effect. Fixes #396057
* 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/inspect/plugin-audiofx.xml:
Add docs for the audioinvert element and add them to the build system.
* tests/check/Makefile.am:
* tests/check/elements/audioinvert.c: (setup_invert),
(cleanup_invert), (GST_START_TEST), (invert_suite), (main):
Add unit test suite for the audioinvert element.
2007-01-23 Wim Taymans <wim@fluendo.com>
* gst/rtp/gstrtpmp4gdepay.c: (gst_rtp_mp4g_depay_parse_int),
......
......@@ -76,6 +76,7 @@ IGNORE_CFILES =
EXTRA_HFILES = \
$(top_srcdir)/gst/apetag/gstapedemux.h \
$(top_srcdir)/gst/audiofx/audiopanorama.h \
$(top_srcdir)/gst/audiofx/audioinvert.h \
$(top_srcdir)/gst/autodetect/gstautoaudiosink.h \
$(top_srcdir)/gst/autodetect/gstautovideosink.h \
$(top_srcdir)/gst/avi/gstavidemux.h \
......
......@@ -15,6 +15,7 @@
<xi:include href="xml/element-apedemux.xml" />
<xi:include href="xml/element-apev2mux.xml" />
<xi:include href="xml/element-audiopanorama.xml" />
<xi:include href="xml/element-audioinvert.xml" />
<xi:include href="xml/element-autoaudiosink.xml" />
<xi:include href="xml/element-autovideosink.xml" />
<xi:include href="xml/element-avidemux.xml" />
......
......@@ -37,6 +37,16 @@ GST_AUDIO_PANORAMA
GST_AUDIO_PANORAMA_CLASS
</SECTION>
<SECTION>
<FILE>element-audioinvert</FILE>
GstAudioInvert
<TITLE>audioinvert</TITLE>
<SUBSECTION Standard>
GstAudioInvertClass
GST_AUDIO_INVERT
GST_AUDIO_INVERT_CLASS
</SECTION>
<SECTION>
<FILE>element-autoaudiosink</FILE>
GstAutoAudioSink
......
......@@ -16638,3 +16638,13 @@
<DEFAULT>Psychoacoustic Panning (default)</DEFAULT>
</ARG>
<ARG>
<NAME>GstAudioInvert::degree</NAME>
<TYPE>gfloat</TYPE>
<RANGE>[0,1]</RANGE>
<FLAGS>rw</FLAGS>
<NICK>Degree</NICK>
<BLURB>Degree of inversion.</BLURB>
<DEFAULT>0</DEFAULT>
</ARG>
......@@ -9,6 +9,13 @@
<package>GStreamer</package>
<origin>http://gstreamer.net/</origin>
<elements>
<element>
<name>audioinvert</name>
<longname>AudioInvert</longname>
<class>Filter/Effect/Audio</class>
<description>Swaps upper and lower half of audio samples</description>
<author>Sebastian Dröge &lt;slomo@circular-chaos.org&gt;</author>
</element>
<element>
<name>audiopanorama</name>
<longname>AudioPanorama</longname>
......
......@@ -4,7 +4,8 @@ plugin_LTLIBRARIES = libgstaudiofx.la
# sources used to compile this plug-in
libgstaudiofx_la_SOURCES = audiofx.c\
audiopanorama.c
audiopanorama.c \
audioinvert.c
# flags used to compile this plugin
libgstaudiofx_la_CFLAGS = $(GST_CFLAGS) \
......@@ -16,4 +17,5 @@ libgstaudiofx_la_LIBADD = $(GST_LIBS) \
libgstaudiofx_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
# headers we need but don't want installed
noinst_HEADERS = audiopanorama.h
noinst_HEADERS = audiopanorama.h \
audioinvert.h
......@@ -26,6 +26,7 @@
#include <gst/controller/gstcontroller.h>
#include "audiopanorama.h"
#include "audioinvert.h"
/* entry point to initialize the plug-in
* initialize the plug-in itself
......@@ -38,8 +39,10 @@ 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);
return (gst_element_register (plugin, "audiopanorama", GST_RANK_NONE,
GST_TYPE_AUDIO_PANORAMA) &&
gst_element_register (plugin, "audioinvert", GST_RANK_NONE,
GST_TYPE_AUDIO_INVERT));
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
......
/*
* GStreamer
* Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
* 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:element-audioinvert
* @short_description: Swaps upper and lower half of audio samples
*
* <refsect2>
* Swaps upper and lower half of audio samples. Mixing an inverted sample on top of
* the original with a slight delay can produce effects that sound like resonance.
* Creating a stereo sample from a mono source, with one channel inverted produces wide-stereo sounds.
* <title>Example launch line</title>
* <para>
* <programlisting>
* gst-launch audiotestsrc wave=saw ! audioinvert invert=0.4 ! alsasink
* gst-launch filesrc location="melo1.ogg" ! oggdemux ! vorbisdec ! audioconvert ! audioinvert invert=0.4 ! alsasink
* gst-launch audiotestsrc wave=saw ! audioconvert ! audioinvert invert=0.4 ! audioconvert ! alsasink
* </programlisting>
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gst/controller/gstcontroller.h>
#include "audioinvert.h"
#define GST_CAT_DEFAULT gst_audio_invert_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
static const GstElementDetails element_details =
GST_ELEMENT_DETAILS ("AudioInvert",
"Filter/Effect/Audio",
"Swaps upper and lower half of audio samples",
"Sebastian Dröge <slomo@circular-chaos.org>");
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_DEGREE
};
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-float, "
"rate = (int) [ 1, MAX ], "
"channels = (int) [ 1, MAX ], "
"endianness = (int) BYTE_ORDER, " "width = (int) 32; "
"audio/x-raw-int, "
"rate = (int) [ 1, MAX ], "
"channels = (int) [ 1, MAX ], "
"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-float, "
"rate = (int) [ 1, MAX ], "
"channels = (int) [ 1, MAX], "
"endianness = (int) BYTE_ORDER, " "width = (int) 32; "
"audio/x-raw-int, "
"rate = (int) [ 1, MAX ], "
"channels = (int) [ 1, MAX ], "
"endianness = (int) BYTE_ORDER, "
"width = (int) 16, " "depth = (int) 16, " "signed = (boolean) true")
);
#define DEBUG_INIT(bla) \
GST_DEBUG_CATEGORY_INIT (gst_audio_invert_debug, "audioinvert", 0, "audioinvert element");
GST_BOILERPLATE_FULL (GstAudioInvert, gst_audio_invert, GstBaseTransform,
GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
static void gst_audio_invert_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_audio_invert_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_audio_invert_set_caps (GstBaseTransform * base,
GstCaps * incaps, GstCaps * outcaps);
static GstFlowReturn gst_audio_invert_transform_ip (GstBaseTransform * base,
GstBuffer * buf);
static void gst_audio_invert_transform_int (GstAudioInvert * filter,
gint16 * data, guint num_samples);
static void gst_audio_invert_transform_float (GstAudioInvert * filter,
gfloat * data, guint num_samples);
/* GObject vmethod implementations */
static void
gst_audio_invert_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_invert_class_init (GstAudioInvertClass * klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
gobject_class->set_property = gst_audio_invert_set_property;
gobject_class->get_property = gst_audio_invert_get_property;
g_object_class_install_property (gobject_class, PROP_DEGREE,
g_param_spec_float ("degree", "Degree",
"Degree of inversion", 0.0, 1.0,
0.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
GST_BASE_TRANSFORM_CLASS (klass)->set_caps =
GST_DEBUG_FUNCPTR (gst_audio_invert_set_caps);
GST_BASE_TRANSFORM_CLASS (klass)->transform_ip =
GST_DEBUG_FUNCPTR (gst_audio_invert_transform_ip);
}
static void
gst_audio_invert_init (GstAudioInvert * filter, GstAudioInvertClass * klass)
{
filter->degree = 0.0;
filter->width = 0;
gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), TRUE);
}
static void
gst_audio_invert_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAudioInvert *filter = GST_AUDIO_INVERT (object);
switch (prop_id) {
case PROP_DEGREE:
filter->degree = g_value_get_float (value);
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter),
filter->degree == 0.0);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_audio_invert_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAudioInvert *filter = GST_AUDIO_INVERT (object);
switch (prop_id) {
case PROP_DEGREE:
g_value_set_float (value, filter->degree);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* GstBaseTransform vmethod implementations */
static gboolean
gst_audio_invert_set_caps (GstBaseTransform * base, GstCaps * incaps,
GstCaps * outcaps)
{
GstAudioInvert *filter = GST_AUDIO_INVERT (base);
const GstStructure *structure;
gboolean ret;
gint width;
const gchar *fmt;
/*GST_INFO ("incaps are %" GST_PTR_FORMAT, incaps); */
structure = gst_caps_get_structure (incaps, 0);
ret = gst_structure_get_int (structure, "width", &width);
if (!ret)
goto no_width;
filter->width = width / 8;
fmt = gst_structure_get_name (structure);
if (!strcmp (fmt, "audio/x-raw-int"))
filter->process = (GstAudioInvertProcessFunc)
gst_audio_invert_transform_int;
else
filter->process = (GstAudioInvertProcessFunc)
gst_audio_invert_transform_float;
return TRUE;
no_width:
GST_DEBUG ("no width in caps");
return FALSE;
}
static void
gst_audio_invert_transform_int (GstAudioInvert * filter,
gint16 * data, guint num_samples)
{
gint i;
gfloat dry = 1.0 - filter->degree;
glong val;
for (i = 0; i < num_samples; i++) {
val = (*data) * dry + (-1 - (*data)) * filter->degree;
*data++ = (gint16) CLAMP (val, G_MININT16, G_MAXINT16);
}
}
static void
gst_audio_invert_transform_float (GstAudioInvert * filter,
gfloat * data, guint num_samples)
{
gint i;
gfloat dry = 1.0 - filter->degree;
glong val;
for (i = 0; i < num_samples; i++) {
val = (*data) * dry - (*data) * filter->degree;
*data++ = val;
}
}
/* this function does the actual processing
*/
static GstFlowReturn
gst_audio_invert_transform_ip (GstBaseTransform * base, GstBuffer * buf)
{
GstAudioInvert *filter = GST_AUDIO_INVERT (base);
guint num_samples = GST_BUFFER_SIZE (buf) / filter->width;
if (!gst_buffer_is_writable (buf))
return GST_FLOW_OK;
filter->process (filter, GST_BUFFER_DATA (buf), num_samples);
return GST_FLOW_OK;
}
/*
* GStreamer
* Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
* 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_INVERT_H__
#define __GST_AUDIO_INVERT_H__
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
G_BEGIN_DECLS
#define GST_TYPE_AUDIO_INVERT (gst_audio_invert_get_type())
#define GST_AUDIO_INVERT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_INVERT,GstAudioInvert))
#define GST_IS_AUDIO_INVERT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_INVERT))
#define GST_AUDIO_INVERT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_INVERT,GstAudioInvertClass))
#define GST_IS_AUDIO_INVERT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_INVERT))
#define GST_AUDIO_INVERT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_INVERT,GstAudioInvertClass))
typedef struct _GstAudioInvert GstAudioInvert;
typedef struct _GstAudioInvertClass GstAudioInvertClass;
typedef void (*GstAudioInvertProcessFunc)(GstAudioInvert*, guint8*, guint);
struct _GstAudioInvert {
GstBaseTransform element;
gfloat degree;
/* < private > */
GstAudioInvertProcessFunc process;
gint width;
};
struct _GstAudioInvertClass {
GstBaseTransformClass parent;
};
GType gst_audio_invert_get_type (void);
G_END_DECLS
#endif /* __GST_AUDIO_INVERT_H__ */
......@@ -34,6 +34,7 @@ endif
check_PROGRAMS = \
$(check_annodex) \
elements/audiopanorama \
elements/audioinvert \
elements/avimux \
elements/level \
elements/matroskamux \
......
/* GStreamer
*
* unit test for audioinvert
*
* Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
*
* Greatly based on the audiopanorama unit test
* 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.
*/
#include <unistd.h>
#include <gst/base/gstbasetransform.h>
#include <gst/check/gstcheck.h>
gboolean have_eos = FALSE;
/* For ease of programming we use globals to keep refs for our floating
* src and sink pads we create; otherwise we always have to do get_pad,
* get_peer, and then remove references in every test function */
GstPad *mysrcpad, *mysinkpad;
#define INVERT_CAPS_STRING \
"audio/x-raw-int, " \
"channels = (int) 1, " \
"rate = (int) 44100, " \
"endianness = (int) BYTE_ORDER, " \
"width = (int) 16, " \
"depth = (int) 16, " \
"signed = (bool) TRUE"
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"channels = (int) 1, "
"rate = (int) [ 1, MAX ], "
"endianness = (int) BYTE_ORDER, "
"width = (int) 16, " "depth = (int) 16, " "signed = (bool) TRUE")
);
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"channels = (int) 1, "
"rate = (int) [ 1, MAX ], "
"endianness = (int) BYTE_ORDER, "
"width = (int) 16, " "depth = (int) 16, " "signed = (bool) TRUE")
);
GstElement *
setup_invert ()
{
GstElement *invert;
GST_DEBUG ("setup_invert");
invert = gst_check_setup_element ("audioinvert");
mysrcpad = gst_check_setup_src_pad (invert, &srctemplate, NULL);
mysinkpad = gst_check_setup_sink_pad (invert, &sinktemplate, NULL);
gst_pad_set_active (mysrcpad, TRUE);
gst_pad_set_active (mysinkpad, TRUE);
return invert;
}
void
cleanup_invert (GstElement * invert)
{
GST_DEBUG ("cleanup_invert");
g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
g_list_free (buffers);
buffers = NULL;
gst_pad_set_active (mysrcpad, FALSE);
gst_pad_set_active (mysinkpad, FALSE);
gst_check_teardown_src_pad (invert);
gst_check_teardown_sink_pad (invert);
gst_check_teardown_element (invert);
}
GST_START_TEST (test_passthrough)
{
GstElement *invert;
GstBuffer *inbuffer, *outbuffer;
GstCaps *caps;
gint16 in[4] = { 16384, -256, 128, -512 };
gint16 *res;
invert = setup_invert ();
fail_unless (gst_element_set_state (invert,
GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
"could not set to playing");
inbuffer = gst_buffer_new_and_alloc (8);
memcpy (GST_BUFFER_DATA (inbuffer), in, 8);
fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 8) == 0);
caps = gst_caps_from_string (INVERT_CAPS_STRING);
gst_buffer_set_caps (inbuffer, caps);
gst_caps_unref (caps);
ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
/* pushing gives away my reference ... */
fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
/* ... but it ends up being collected on the global buffer list */
fail_unless_equals_int (g_list_length (buffers), 1);
fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
res = (gint16 *) GST_BUFFER_DATA (outbuffer);
GST_INFO ("expected %+5ld %+5ld %+5ld %+5ld real %+5ld %+5ld %+5ld %+5ld",
in[0], in[1], in[2], in[3], res[0], res[1], res[2], res[3]);
fail_unless (memcmp (GST_BUFFER_DATA (outbuffer), in, 8) == 0);
/* cleanup */
cleanup_invert (invert);
}
GST_END_TEST;
GST_START_TEST (test_zero)
{
GstElement *invert;
GstBuffer *inbuffer, *outbuffer;
GstCaps *caps;
gint16 in[4] = { 16384, -256, 128, -512 };
gint16 out[4] = { 0, 0, 0, 0 };
gint16 *res;
invert = setup_invert ();
g_object_set (G_OBJECT (invert), "degree", 0.5, NULL);
fail_unless (gst_element_set_state (invert,
GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
"could not set to playing");
inbuffer = gst_buffer_new_and_alloc (8);
memcpy (GST_BUFFER_DATA (inbuffer), in, 8);
fail_unless (memcmp (GST_BUFFER_DATA (inbuffer), in, 8) == 0);
caps = gst_caps_from_string (INVERT_CAPS_STRING);
gst_buffer_set_caps (inbuffer, caps);
gst_caps_unref (caps);
ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
/* pushing gives away my reference ... */
fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
/* ... and puts a new buffer on the global list */
fail_unless_equals_int (g_list_length (buffers), 1);
fail_if ((outbuffer = (GstBuffer *) buffers->data) == NULL);
res = (gint16 *) GST_BUFFER_DATA (outbuffer);
GST_INFO ("expected %+5ld %+5ld %+5ld %+5ld real %+5ld %+5ld %+5ld %+5ld",
out[0], out[1], out[2], out[3], res[0], res[1], res[2], res[3]);
fail_unless (memcmp (GST_BUFFER_DATA (outbuffer), out, 8) == 0);