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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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f6f9563dc8
Add a script that creates elements based on any of the GStreamer base classes. It isn't very user friendly at the moment, one needs to edit the script to make it work properly. Each base class has a template file describing what to put into the constructed element. Eventually, these templates should be moved to reside with the base class source and installed to a well-known directory, where an installed script could find them. The template files use the .c ending so editors know they are C source, but gst-indent doesn't handle them correctly. So they need to be committed with -n. Ugh. I'll try to figure out a fix for that soon.
233 lines
5.8 KiB
Bash
Executable file
233 lines
5.8 KiB
Bash
Executable file
#!/bin/sh
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class=basetransform
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GST_IS_REPLACE=MY_IS_EXAMPLE
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GST_REPLACE=MY_EXAMPLE
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GST_TYPE_REPLACE=MY_TYPE_EXAMPLE
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GstReplace=MyExample
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gst_replace=my_example
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gstreplace=myexample
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replace=example
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source=gst$class.c
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pkg=`grep -A 10000 '^% pkg-config' $source | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1`
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GST_TYPE_BASE_REPLACE=`grep -A 10000 '^% TYPE_CLASS_NAME' $source | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1`
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GstBaseReplace=`grep -A 10000 '^% ClassName' $source | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1`
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generate ()
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{
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grep -A 10000 '^% copyright' base.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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cat <<EOF
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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EOF
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grep -A 10000 '^% includes' base.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% includes' gobject.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% includes' $source | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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cat <<EOF
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#include "gstreplace.h"
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/* prototypes */
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EOF
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grep -A 10000 '^% prototypes' base.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% prototypes' gobject.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% prototypes' $source | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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cat <<EOF
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enum
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{
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PROP_0
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};
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/* pad templates */
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static GstStaticPadTemplate gst_replace_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/unknown")
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);
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static GstStaticPadTemplate gst_replace_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/unknown")
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);
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/* class initialization */
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GST_BOILERPLATE (GstReplace, gst_replace, GstBaseReplace,
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GST_TYPE_BASE_REPLACE);
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static void
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gst_replace_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_replace_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_replace_sink_template));
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gst_element_class_set_details_simple (element_class, "FIXME",
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"Generic", "FIXME", "FIXME <fixme@example.com>");
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}
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static void
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gst_replace_class_init (GstReplaceClass * klass)
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{
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EOF
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grep -A 10000 '^% declare-class' base.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% declare-class' gobject.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% declare-class' $source | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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echo
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grep -A 10000 '^% set-methods' base.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% set-methods' gobject.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% set-methods' $source | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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cat <<EOF
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}
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static void
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gst_replace_init (GstReplace * replace, GstReplaceClass * replace_class)
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{
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}
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EOF
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grep -A 10000 '^% methods' base.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% methods' gobject.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% methods' $source | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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cat <<EOF
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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gst_element_register (plugin, "replace", GST_RANK_NONE,
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gst_replace_get_type ());
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return TRUE;
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}
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#define VERSION "0.0.FIXME"
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#define PACKAGE "FIXME_package"
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#define PACKAGE_NAME "FIXME_package_name"
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#define PACKAGE_ORIGIN "http://FIXME.org/"
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"replace",
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"FIXME",
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plugin_init, VERSION, "LGPL", PACKAGE_NAME, PACKAGE_ORIGIN)
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EOF
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}
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generate_header ()
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{
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grep -A 10000 '^% copyright' base.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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cat <<EOF
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#ifndef _GST_REPLACE_H_
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#define _GST_REPLACE_H_
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EOF
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grep -A 10000 '^% includes' base.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% includes' gobject.c | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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grep -A 10000 '^% includes' $source | tail -n +2|grep -m 1 -B 10000 '^%'|head -n -1
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cat <<EOF
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G_BEGIN_DECLS
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#define GST_TYPE_REPLACE \
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(gst_replace_get_type())
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#define GST_REPLACE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_REPLACE,GstReplace))
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#define GST_REPLACE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_REPLACE,GstReplaceClass))
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#define GST_IS_REPLACE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_REPLACE))
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#define GST_IS_REPLACE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_REPLACE))
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typedef struct _GstReplace GstReplace;
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typedef struct _GstReplaceClass GstReplaceClass;
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struct _GstReplace
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{
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GstBaseReplace base_replace;
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};
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struct _GstReplaceClass
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{
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GstBaseReplaceClass base_replace_class;
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};
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GType gst_replace_get_type (void);
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G_END_DECLS
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#endif
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EOF
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}
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generate | sed \
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-e "s/GST_BASE_REPLACE/$GST_BASE_REPLACE/g" \
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-e "s/GST_TYPE_BASE_REPLACE/$GST_TYPE_BASE_REPLACE/g" \
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-e "s/GstBaseReplace/$GstBaseReplace/g" \
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-e "s/GST_IS_REPLACE/$GST_IS_REPLACE/g" \
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-e "s/GST_REPLACE/$GST_REPLACE/g" \
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-e "s/GST_TYPE_REPLACE/$GST_TYPE_REPLACE/g" \
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-e "s/GstReplace/$GstReplace/g" \
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-e "s/gst_replace/$gst_replace/g" \
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-e "s/gstreplace/$gstreplace/g" \
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-e "s/replace/$replace/g" >myexample.c
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generate_header | sed \
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-e "s/GST_BASE_REPLACE/$GST_BASE_REPLACE/g" \
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-e "s/GST_TYPE_BASE_REPLACE/$GST_TYPE_BASE_REPLACE/g" \
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-e "s/GstBaseReplace/$GstBaseReplace/g" \
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-e "s/GST_IS_REPLACE/$GST_IS_REPLACE/g" \
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-e "s/GST_REPLACE/$GST_REPLACE/g" \
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-e "s/GST_TYPE_REPLACE/$GST_TYPE_REPLACE/g" \
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-e "s/GstReplace/$GstReplace/g" \
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-e "s/gst_replace/$gst_replace/g" \
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-e "s/gstreplace/$gstreplace/g" \
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-e "s/replace/$replace/g" >myexample.h
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gst-indent myexample.c
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echo pkg is $pkg
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gcc -Wall $(pkg-config --cflags gstreamer-0.10 $pkg) -c -o myexample.o myexample.c
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gcc -shared -o myexample.so myexample.o $(pkg-config --libs gstreamer-0.10 $pkg)
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