#!/bin/sh prefix=gst basedir=`dirname $0` templatedir=$basedir/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 "$class" = "" ] ; then echo "Usage: element-maker [OPTIONS] ELEMENT_NAME BASE_CLASS" exit 1 fi if [ ! -f "$templatedir/$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/') name=$(echo $name | sed -e 's/\(.*\)/\L\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 $name | sed -e 's/_//g') if [ "${prefix}" = gst ] ; then prefixreplace=$replace else prefixreplace=$gstreplace fi 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 */ G_DEFINE_TYPE_WITH_CODE (GstReplace, gst_replace, GST_TYPE_BASE_REPLACE, GST_DEBUG_CATEGORY_INIT (gst_replace_debug_category, "prefixreplace", 0, "debug category for replace element")); 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 cat <<EOF /* Setting up pads and setting metadata should be moved to base_class_init if you intend to subclass this 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_static_metadata (GST_ELEMENT_CLASS(klass), "FIXME Long name", "Generic", "FIXME Description", "$REAL_NAME <$EMAIL_ADDRESS>"); EOF 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) { 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) { /* FIXME Remember to set the rank if it's an element that is meant to be autoplugged by decodebin. */ return gst_element_register (plugin, "prefixreplace", GST_RANK_NONE, GST_TYPE_REPLACE); } /* FIXME: these are normally defined by the GStreamer build system. If you are creating an element to be included in gst-plugins-*, remove these, as they're always defined. Otherwise, edit as appropriate for your external plugin package. */ #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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, 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/$gstreplace/g" \ -e "s/prefixreplace/$prefixreplace/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/$gstreplace/g" \ -e "s/prefixreplace/$prefixreplace/g" \ -e "s/replace/$replace/g" >$gstreplace.h gst-indent $gstreplace.c echo pkg is $pkg gcc -Wall -Werror -fPIC $CPPFLAGS $(pkg-config --cflags gstreamer-1.0 $pkg) -c -o $gstreplace.o $gstreplace.c if test $? -ne 0; then exit 1 fi gcc -shared -o $gstreplace.so $gstreplace.o $(pkg-config --libs gstreamer-1.0 $pkg) if test $? -ne 0; then exit 1 fi gst-inspect-1.0 ./$gstreplace.so