How to update configure for gstreamer-1.0

[Steve Cookson]

Hi Guys,

I`m looking at a script called šconfigure.inš in wxPerl. I`m trying to
update it for gstreamer-1.0. I assume you guys use the same script in
wxWidgets install.

What I like to do is make the changes at the wxWidgets end if possible and
allow it to cascade through.

I`m going to work on the MediaCtrl section later because I assume that will
need to be updated, if only for the playbin2 thing, although really I like
to be able to pass a pipeline and replace playbin with gst-parse-launch,
which would allow any valid pipeline, but defaulting to playbin2.

In it there is a code-segment that looks like this (unmodified):


dnl
---------------------------------------------------------------------------
dnl wxMediaCtrl
dnl
---------------------------------------------------------------------------

USE_MEDIA=0

if test "$wxUSE_MEDIACTRL" = "yes" -o "$wxUSE_MEDIACTRL" = "auto"; then
USE_MEDIA=1

dnl
-----------------------------------------------------------------------
dnl GStreamer
dnl
-----------------------------------------------------------------------
if test "$wxUSE_GTK" = 1; then
wxUSE_GSTREAMER="no"

dnl
-------------------------------------------------------------------
dnl Test for at least 0.8 gstreamer module from pkg-config
dnl Even totem doesn't accept 0.9 evidently.
dnl
dnl So, we first check to see if 0.10 if available - if not we
dnl try the older 0.8 version
dnl
-------------------------------------------------------------------
GST_VERSION_MAJOR=0
GST_VERSION_MINOR=10
GST_VERSION=$GST_VERSION_MAJOR.$GST_VERSION_MINOR

if test "$wxUSE_GSTREAMER8" = "no"; then
PKG_CHECK_MODULES(GST,
[gstreamer-$GST_VERSION
gstreamer-plugins-base-$GST_VERSION],
[
wxUSE_GSTREAMER="yes"
GST_LIBS="$GST_LIBS -lgstinterfaces-$GST_VERSION"
],
[
AC_MSG_WARN([GStreamer 0.10 not available, falling back
to 0.8])
GST_VERSION_MINOR=8
]
)
else
dnl check only for 0.8
GST_VERSION_MINOR=8
fi

if test $GST_VERSION_MINOR = "8"; then
GST_VERSION=$GST_VERSION_MAJOR.$GST_VERSION_MINOR
PKG_CHECK_MODULES(GST,
[gstreamer-$GST_VERSION gstreamer-interfaces-$GST_VERSION
gstreamer-gconf-$GST_VERSION],
wxUSE_GSTREAMER="yes",
[
AC_MSG_WARN([GStreamer 0.8/0.10 not available.])
])
fi


if test "$wxUSE_GSTREAMER" = "yes"; then
CPPFLAGS="$GST_CFLAGS $CPPFLAGS"
EXTRALIBS_MEDIA="$GST_LIBS"

AC_DEFINE(wxUSE_GSTREAMER)
else
USE_MEDIA=0
fi

elif test "$wxUSE_MAC" = 1; then
dnl We always have the necessary libraries under Mac
dnl but we need to link with it explicitly.
GST_LIBS="-framework QTKit"
fi

if test $USE_MEDIA = 1; then
SAMPLES_SUBDIRS="$SAMPLES_SUBDIRS mediaplayer"
AC_DEFINE(wxUSE_MEDIACTRL)
else
if test "$wxUSE_MEDIACTRL" = "yes"; then
AC_MSG_ERROR([GStreamer not available])
else
dnl was set to 'auto'
AC_MSG_WARN([GStreamer not available... disabling wxMediaCtrl])
fi
fi
fi


In order to make it install with gstreamer-1.0, I`ve changed it to look
like this:


dnl
---------------------------------------------------------------------------
dnl wxMediaCtrl
dnl
---------------------------------------------------------------------------

USE_MEDIA=0

if test "$wxUSE_MEDIACTRL" = "yes" -o "$wxUSE_MEDIACTRL" = "auto"; then
USE_MEDIA=1

dnl
-----------------------------------------------------------------------
dnl GStreamer
dnl
-----------------------------------------------------------------------
if test "$wxUSE_GTK" = 1; then
wxUSE_GSTREAMER="no"

dnl
-------------------------------------------------------------------
dnl Test for at least 0.8 gstreamer module from pkg-config
dnl Even totem doesn't accept 0.9 evidently.
dnl
dnl So, we first check to see if 1.0 if available - if not we
dnl check to see if 0.10 if available - if not we
dnl try the older 0.8 version
dnl
-------------------------------------------------------------------

GST_VERSION_MAJOR=1
GST_VERSION_MINOR=0
GST_VERSION=$GST_VERSION_MAJOR.$GST_VERSION_MINOR

if test "$wxUSE_GSTREAMER8" = "no"; then
PKG_CHECK_MODULES(GST,
[gstreamer-$GST_VERSION
gstreamer-plugins-base-$GST_VERSION],
[
wxUSE_GSTREAMER="yes"
GST_LIBS="$GST_LIBS -lgstinterfaces-$GST_VERSION"
],
[
AC_MSG_WARN([GStreamer 1.0 not available, falling back
to 0.10])
GST_VERSION_MAJOR=0
GST_VERSION_MINOR=10
GST_VERSION=$GST_VERSION_MAJOR.$GST_VERSION_MINOR
PKG_CHECK_MODULES(GST,
[gstreamer-$GST_VERSION gstreamer-plugins-base-$GST_VERSION],
[
wxUSE_GSTREAMER="yes"
GST_LIBS="$GST_LIBS -lgstinterfaces-$GST_VERSION"
],
[
AC_MSG_WARN([GStreamer 0.10 not available, falling back to 0.8])
GST_VERSION_MINOR=8
]
)
]
)
else
dnl check only for 0.8
GST_VERSION_MINOR=8
fi


if test $GST_VERSION_MINOR = "8"; then
GST_VERSION=$GST_VERSION_MAJOR.$GST_VERSION_MINOR
PKG_CHECK_MODULES(GST,
[gstreamer-$GST_VERSION gstreamer-interfaces-$GST_VERSION
gstreamer-gconf-$GST_VERSION],
wxUSE_GSTREAMER="yes",
[
AC_MSG_WARN([GStreamer 0.8/0.10/1.0 not available.])
])
fi


if test "$wxUSE_GSTREAMER" = "yes"; then
CPPFLAGS="$GST_CFLAGS $CPPFLAGS"
EXTRALIBS_MEDIA="$GST_LIBS"

AC_DEFINE(wxUSE_GSTREAMER)
else
USE_MEDIA=0
fi

elif test "$wxUSE_MAC" = 1; then
dnl We always have the necessary libraries under Mac
dnl but we need to link with it explicitly.
GST_LIBS="-framework QTKit"
fi

if test $USE_MEDIA = 1; then
SAMPLES_SUBDIRS="$SAMPLES_SUBDIRS mediaplayer"
AC_DEFINE(wxUSE_MEDIACTRL)
else
if test "$wxUSE_MEDIACTRL" = "yes"; then
AC_MSG_ERROR([GStreamer not available])
else
dnl was set to 'auto'
AC_MSG_WARN([GStreamer not available... disabling wxMediaCtrl])
fi
fi
fi


Anyhow I tried it unsuccessfully, even the error messages were wrong so I
guess I`ve misunderstood the wxPerl Build logic.

I`m going to talk to the wxPerl people, but in the meantime, is there
anything glaringly wrong?

Thanks very much.

What versions are you patching? I`ll send you a patch when it`s done.

Regards,

Steve.

[Vadim Zeitlin]

On Mon, 31 Mar 2014 12:46:10 -0700 (PDT) Steve Cookson wrote:

SC> In it there is a code-segment that looks like this (unmodified):
... 100 lines snipped ...
SC> In order to make it install with gstreamer-1.0, I`ve changed it to look
SC> like this:
... 100+ lines snipped ...

Sorry, this is impossible to read. Please show the diff of the changes
that you made which should be just a few lines.

SC> Anyhow I tried it unsuccessfully, even the error messages were wrong so I
SC> guess I`ve misunderstood the wxPerl Build logic.

The logic is dead simple, configure is just a shell script and to detect
gstreamer 1.0 you just need to add an invocation of PKG_CHECK_MODULES with
the version you want to test for.

Things to keep in mind:

1. After changing configure.in you need to regenerate configure from it,
you can do it by running autoconf manually or use "./autogen.sh" in the
wxWidgets directory.

2. To debug configure:
(a) Look at config.log generated by it.
(b) Edit configure (it's huge and horrible but you just need to find the
place you're interested in, e.g. search for "GStreamer" in it) and
add "set +x"/"set -x" around the part you're debugging.

Regards,
VZ

[Steve Cookson]

Hi Vadim,

Thanks for your answer.

Post by Vadim Zeitlin
Sorry, this is impossible to read. Please show the diff of the changes
that you made which should be just a few lines.

I`ll post you something when I`ve played around with it some more.
Regards

Steve.

Post by Vadim Zeitlin
... 100 lines snipped ...
SC> In order to make it install with gstreamer-1.0, I`ve changed it to look
... 100+ lines snipped ...
Sorry, this is impossible to read. Please show the diff of the changes
that you made which should be just a few lines.
SC> Anyhow I tried it unsuccessfully, even the error messages were wrong so I
SC> guess I`ve misunderstood the wxPerl Build logic.
The logic is dead simple, configure is just a shell script and to detect
gstreamer 1.0 you just need to add an invocation of PKG_CHECK_MODULES with
the version you want to test for.
1. After changing configure.in you need to regenerate configure from it,
you can do it by running autoconf manually or use "./autogen.sh" in the
wxWidgets directory.
(a) Look at config.log generated by it.
(b) Edit configure (it's huge and horrible but you just need to find the
place you're interested in, e.g. search for "GStreamer" in it) and
add "set +x"/"set -x" around the part you're debugging.
Regards,
VZ
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