gstreamer/tools/gst-element-maker
2011-02-17 14:08:09 -08:00

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#!/bin/sh
prefix=gst
templatedir=element-templates
while [ "$1" ] ; do
case $1 in
--help)
cat <<-EOF
Usage: element-maker [OPTIONS] ELEMENT_NAME BASE_CLASS
Create a GStreamer element that subclasses BASE_CLASS.
Options:
--help Print this information
--prefix PREFIX Use PREFIX instead of "gst"
Example: 'element-maker my_element basetransform' will create the files
gstmyelement.c and gstmyelement.h that implement GstMyElement, a
subclass of GstBaseTransform, as an element named myelement.
EOF
exit 0
;;
--prefix)
shift
prefix=$1
;;
-*)
echo Unknown option: $1
exit 1
;;
*)
if [ "$name" = "" ]; then
name=$1
elif [ "$class" = "" ]; then
class=$1
else
echo Ignored: $1
fi
esac
shift
done
if [ "$name" = "" -o "$class" = "" ] ; then
echo "Usage: element-maker [OPTIONS] ELEMENT_NAME BASE_CLASS"
exit 1
fi
if [ ! -f "element-templates/$class" ] ; then
echo "Template file for $class not found."
exit 1
fi
PREFIX=$(echo $prefix | sed -e 's/\(.*\)/\U\1/')
NAME=$(echo $name | sed -e 's/\(.*\)/\U\1/')
Prefix=$(echo $prefix | sed -e 's/_\(.\)/\U\1/g' -e 's/^\(.\)/\U\1/')
Name=$(echo $name | sed -e 's/_\(.\)/\U\1/g' -e 's/^\(.\)/\U\1/')
GST_IS_REPLACE=${PREFIX}_IS_${NAME}
GST_REPLACE=${PREFIX}_${NAME}
GST_TYPE_REPLACE=${PREFIX}_TYPE_${NAME}
GstReplace=${Prefix}${Name}
gst_replace=${prefix}_${name}
gstreplace=${prefix}$(echo $name | sed -e 's/_//g')
replace=$(echo $name | sed -e 's/_//g')
if [ "$REAL_NAME" = "" ] ; then
REAL_NAME=FIXME
fi
if [ "$EMAIL_ADDRESS" = "" ] ; then
EMAIL_ADDRESS=fixme@example.com
fi
pkg=`grep -A 10000 '^% pkg-config' $templatedir/$class | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1`
GST_TYPE_BASE_REPLACE=`grep -A 10000 '^% TYPE_CLASS_NAME' $templatedir/$class | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1`
GstBaseReplace=`grep -A 10000 '^% ClassName' $templatedir/$class | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1`
pads=`grep -A 10000 '^% pads' $templatedir/$class | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1`
generate ()
{
cat <<-EOF
/* GStreamer
* Copyright (C) $(date +%Y) $REAL_NAME <$EMAIL_ADDRESS>
*
* 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., 51 Franklin Street, Suite 500,
* Boston, MA 02110-1335, USA.
*/
EOF
cat <<-EOF
/**
* SECTION:element-$gstreplace
*
* The $replace element does FIXME stuff.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -v fakesrc ! $replace ! FIXME ! fakesink
* ]|
* FIXME Describe what the pipeline does.
* </refsect2>
*/
EOF
cat <<EOF
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
EOF
grep -A 10000 '^% includes' $templatedir/gobject | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
grep -A 10000 '^% includes' $templatedir/$class | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
cat <<EOF
#include "gstreplace.h"
GST_DEBUG_CATEGORY_STATIC (gst_replace_debug_category);
#define GST_CAT_DEFAULT gst_replace_debug_category
/* prototypes */
EOF
grep -A 10000 '^% prototypes' $templatedir/gobject | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
grep -A 10000 '^% prototypes' $templatedir/$class | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
for each in $pads
do
grep -A 10000 '^% prototypes' $templatedir/$each | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
done
cat <<EOF
enum
{
PROP_0
};
/* pad templates */
EOF
for each in $pads
do
grep -A 10000 '^% pad-template' $templatedir/$each | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
done
cat <<EOF
/* class initialization */
#define DEBUG_INIT(bla) \\
GST_DEBUG_CATEGORY_INIT (gst_replace_debug_category, "replace", 0, \\
"debug category for replace element");
GST_BOILERPLATE_FULL (GstReplace, gst_replace, GstBaseReplace,
GST_TYPE_BASE_REPLACE, DEBUG_INIT);
static void
gst_replace_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
EOF
for each in $pads
do
grep -A 10000 '^% base-init' $templatedir/$each | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
done
cat <<EOF
gst_element_class_set_details_simple (element_class, "FIXME Long name",
"Generic", "FIXME Description", "$REAL_NAME <$EMAIL_ADDRESS>");
}
static void
gst_replace_class_init (GstReplaceClass * klass)
{
EOF
grep -A 10000 '^% declare-class' $templatedir/gobject | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
grep -A 10000 '^% declare-class' $templatedir/$class | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
echo
grep -A 10000 '^% set-methods' $templatedir/gobject | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
grep -A 10000 '^% set-methods' $templatedir/$class | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
cat <<EOF
}
static void
gst_replace_init (GstReplace * replace, GstReplaceClass * replace_class)
{
EOF
for each in $pads
do
grep -A 10000 '^% instance-init' $templatedir/$each | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
done
cat <<EOF
}
EOF
grep -A 10000 '^% methods' $templatedir/gobject | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
grep -A 10000 '^% methods' $templatedir/$class | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
for each in $pads
do
grep -A 10000 '^% methods' $templatedir/$each | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
done
cat <<EOF
static gboolean
plugin_init (GstPlugin * plugin)
{
gst_element_register (plugin, "replace", GST_RANK_NONE,
gst_replace_get_type ());
return TRUE;
}
#ifndef VERSION
#define VERSION "0.0.FIXME"
#endif
#ifndef PACKAGE
#define PACKAGE "FIXME_package"
#endif
#ifndef PACKAGE_NAME
#define PACKAGE_NAME "FIXME_package_name"
#endif
#ifndef GST_PACKAGE_ORIGIN
#define GST_PACKAGE_ORIGIN "http://FIXME.org/"
#endif
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"replace",
"FIXME plugin description",
plugin_init, VERSION, "LGPL", PACKAGE_NAME, GST_PACKAGE_ORIGIN)
EOF
}
generate_header ()
{
cat <<-EOF
/* GStreamer
* Copyright (C) $(date +%Y) $REAL_NAME <$EMAIL_ADDRESS>
*
* 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.
*/
EOF
cat <<EOF
#ifndef _GST_REPLACE_H_
#define _GST_REPLACE_H_
EOF
grep -A 10000 '^% includes' $templatedir/gobject | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
grep -A 10000 '^% includes' $templatedir/$class | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
cat <<EOF
G_BEGIN_DECLS
#define GST_TYPE_REPLACE \
(gst_replace_get_type())
#define GST_REPLACE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_REPLACE,GstReplace))
#define GST_REPLACE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_REPLACE,GstReplaceClass))
#define GST_IS_REPLACE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_REPLACE))
#define GST_IS_REPLACE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_REPLACE))
typedef struct _GstReplace GstReplace;
typedef struct _GstReplaceClass GstReplaceClass;
struct _GstReplace
{
GstBaseReplace base_replace;
EOF
for each in $pads
do
grep -A 10000 '^% instance-members' $templatedir/$each | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
done
cat <<EOF
};
struct _GstReplaceClass
{
GstBaseReplaceClass base_replace_class;
};
GType gst_replace_get_type (void);
G_END_DECLS
#endif
EOF
}
generate | sed \
-e "s/GST_BASE_REPLACE/$GST_BASE_REPLACE/g" \
-e "s/GST_TYPE_BASE_REPLACE/$GST_TYPE_BASE_REPLACE/g" \
-e "s/GstBaseReplace/$GstBaseReplace/g" \
-e "s/GST_IS_REPLACE/$GST_IS_REPLACE/g" \
-e "s/GST_REPLACE/$GST_REPLACE/g" \
-e "s/GST_TYPE_REPLACE/$GST_TYPE_REPLACE/g" \
-e "s/GstReplace/$GstReplace/g" \
-e "s/gst_replace/$gst_replace/g" \
-e "s/gstreplace/$gstreplace/g" \
-e "s/replace/$replace/g" >$gstreplace.c
generate_header | sed \
-e "s/GST_BASE_REPLACE/$GST_BASE_REPLACE/g" \
-e "s/GST_TYPE_BASE_REPLACE/$GST_TYPE_BASE_REPLACE/g" \
-e "s/GstBaseReplace/$GstBaseReplace/g" \
-e "s/GST_IS_REPLACE/$GST_IS_REPLACE/g" \
-e "s/GST_REPLACE/$GST_REPLACE/g" \
-e "s/GST_TYPE_REPLACE/$GST_TYPE_REPLACE/g" \
-e "s/GstReplace/$GstReplace/g" \
-e "s/gst_replace/$gst_replace/g" \
-e "s/gstreplace/$gstreplace/g" \
-e "s/replace/$replace/g" >$gstreplace.h
gst-indent $gstreplace.c
echo pkg is $pkg
gcc -Wall -fPIC $(pkg-config --cflags gstreamer-0.10 $pkg) -c -o $gstreplace.o $gstreplace.c
gcc -shared -o $gstreplace.so $gstreplace.o $(pkg-config --libs gstreamer-0.10 $pkg)