sandbox to get ffmpeg to play nicely in all cases

Original commit message from CVS:
sandbox to get ffmpeg to play nicely in all cases

Makefile.am

+SUBDIRS = gst-libs ext

README

+This is a sandbox module to test if our build setup for external libraries
+(for example FFmpeg) is sane.

autogen.sh

+#!/bin/sh
+# Run this to generate all the initial makefiles, etc.
+
+DIE=0
+package=gst-ffmpeg
+srcfile=configure.ac
+
+# a quick cvs co if necessary to alleviate the pain - may remove this
+# when developers get a clue ;)
+if test ! -d common; 
+then 
+  echo "+ getting common/ from cvs"
+  cvs co common 
+fi
+
+# ensure that we have the dirs we put ext libs in to appease automake
+mkdir -p gst-libs/ext/ffmpeg/ffmpeg
+
+# source helper functions
+if test ! -f common/gst-autogen.sh;
+then
+  echo There is something wrong with your source tree.
+  echo You are missing common/gst-autogen.sh
+  exit 1
+fi
+. common/gst-autogen.sh
+
+CONFIGURE_DEF_OPT='--enable-maintainer-mode --enable-plugin-builddir --enable-debug --enable-DEBUG'
+
+autogen_options $@
+
+echo -n "+ check for build tools"
+if test ! -z "$NOCHECK"; then echo " skipped"; else  echo; fi
+version_check "autoconf" "$AUTOCONF autoconf autoconf-2.54 autoconf-2.53 autoconf-2.52" \
+              "ftp://ftp.gnu.org/pub/gnu/autoconf/" 2 52 || DIE=1
+version_check "automake" "$AUTOMAKE automake automake-1.7 automake-1.6 automake-1.5" \
+              "ftp://ftp.gnu.org/pub/gnu/automake/" 1 6 || DIE=1
+version_check "libtoolize" "$LIBTOOLIZE libtoolize libtoolize14" \
+              "ftp://ftp.gnu.org/pub/gnu/libtool/" 1 4 0 || DIE=1
+version_check "pkg-config" "" \
+              "http://www.freedesktop.org/software/pkgconfig" 0 8 0 || DIE=1
+
+die_check $DIE
+
+autoconf_2_52d_check || DIE=1
+aclocal_check || DIE=1
+autoheader_check || DIE=1
+
+die_check $DIE
+
+# if no arguments specified then this will be printed
+if test -z "$*"; then
+  echo "+ checking for autogen.sh options"
+  echo "  This autogen script will automatically run ./configure as:"
+  echo "  ./configure $CONFIGURE_DEF_OPT"
+  echo "  To pass any additional options, please specify them on the $0"
+  echo "  command line."
+fi
+
+toplevel_check $srcfile
+
+tool_run "$aclocal" "-I m4 -I common/m4 $ACLOCAL_FLAGS"
+tool_run "$libtoolize" "--copy --force"
+tool_run "$autoheader"
+
+# touch the stamp-h.in build stamp so we don't re-run autoheader in maintainer mode -- wingo
+echo timestamp > stamp-h.in 2> /dev/null
+
+tool_run "$autoconf"
+tool_run "$automake" "-a -c"
+
+# if enable exists, add an -enable option for each of the lines in that file
+if test -f enable; then
+  for a in `cat enable`; do
+    CONFIGURE_FILE_OPT="--enable-$a"
+  done
+fi
+
+# if disable exists, add an -disable option for each of the lines in that file
+if test -f disable; then
+  for a in `cat disable`; do
+    CONFIGURE_FILE_OPT="$CONFIGURE_FILE_OPT --disable-$a"
+  done
+fi
+
+test -n "$NOCONFIGURE" && {
+  echo "+ skipping configure stage for package $package, as requested."
+  echo "+ autogen.sh done."
+  exit 0
+}
+
+echo "+ running configure ... "
+test ! -z "$CONFIGURE_DEF_OPT" && echo "  ./configure default flags: $CONFIGURE_DEF_OPT"
+test ! -z "$CONFIGURE_EXT_OPT" && echo "  ./configure external flags: $CONFIGURE_EXT_OPT"
+test ! -z "$CONFIGURE_FILE_OPT" && echo "  ./configure enable/disable flags: $CONFIGURE_FILE_OPT"
+echo
+
+./configure $CONFIGURE_DEF_OPT $CONFIGURE_EXT_OPT $CONFIGURE_FILE_OPT || {
+        echo "  configure failed"
+        exit 1
+}
+
+echo "Now type 'make' to compile $package."

configure.ac

+dnl autoconf configuration file for gst-plugins 
+AC_INIT
+AC_CANONICAL_TARGET([])
+
+dnl We disable static building for development, for time savings
+dnl this goes before AS_LIBTOOL to appease autoconf
+dnl *NOTE*: dnl this line before release, so release does static too
+AM_DISABLE_STATIC
+
+dnl AM_MAINTAINER_MODE only provides the option to configure to enable it
+AM_MAINTAINER_MODE
+
+dnl when going to/from release please set the nano (fourth number) right !
+dnl releases only do Wall, cvs and prerelease does Werror too
+AS_VERSION(gst-ffmpeg, GST_FFMPEG_VERSION, 0, 7, 2, 1, GST_CVS="no", GST_CVS="yes")
+
+AM_INIT_AUTOMAKE($PACKAGE,$VERSION)
+
+dnl our libraries and install dirs use major.minor as a version
+GST_MAJORMINOR=$GST_FFMPEG_VERSION_MAJOR.$GST_FFMPEG_VERSION_MINOR
+AC_SUBST(GST_MAJORMINOR)
+                                                                                
+dnl CURRENT, REVISION, AGE
+dnl - library source changed -> increment REVISION
+dnl - interfaces added/removed/changed -> increment CURRENT, REVISION = 0
+dnl - interfaces added -> increment AGE
+dnl - interfaces removed -> AGE = 0
+AS_LIBTOOL(GST_FFMPEG, 1, 0, 0)
+
+AC_CONFIG_SRCDIR(configure.ac)
+AM_CONFIG_HEADER(config.h)
+
+dnl Add parameters for aclocal
+dnl (This must come after AM_INIT_AUTOMAKE, since it modifies ACLOCAL)
+ACLOCAL_FLAGS="-I m4 -I common/m4"
+AC_SUBST(ACLOCAL_AMFLAGS, $ACLOCAL_FLAGS)
+
+AC_PROG_CC
+AM_PROG_CC_STDC
+AS="${CC}"
+
+dnl decide on error flags
+AS_COMPILER_FLAG(-Wall, GST_WALL="yes", GST_WALL="no")
+
+if test "x$GST_WALL" = "xyes"; then
+   GST_ERROR="$GST_ERROR -Wall"
+
+   if test "x$GST_CVS" = "xyes"; then
+     AS_COMPILER_FLAG(-Werror,GST_ERROR="$GST_ERROR -Werror",GST_ERROR="$GST_ERROR")
+     GST_ERROR="$GST_ERROR -DG_DISABLE_DEPRECATED"
+   fi
+fi
+
+AC_HEADER_STDC([])
+
+
+dnl check for gstreamer; uninstalled is selected preferentially -- see pkg-config(1)
+PKG_CHECK_MODULES(GST, gstreamer-$GST_MAJORMINOR >= $GST_FFMPEG_VERSION_MAJOR.$GST_FFMPEG_VERSION_MINOR.$GST_FFMPEG_VERSION_MICRO,
+  HAVE_GST="yes", HAVE_GST="no")
+                                                                                
+if test "x$HAVE_GST" = "xno"; then
+  AC_MSG_ERROR(no GStreamer found)
+fi
+
+dnl ============================= gst plug-ins ================================
+
+plugindir="\$(libdir)/gstreamer-$GST_MAJORMINOR"
+AC_SUBST(plugindir)
+
+GST_PLUGIN_LDFLAGS='-module -avoid-version'
+AC_SUBST(GST_PLUGIN_LDFLAGS)
+
+dnl *** FFMPEG ***
+translit(dnm, m, l) AM_CONDITIONAL(USE_FFMPEG, true)
+GST_CHECK_FEATURE(FFMPEG, [ffmpeg plug-ins], ffmpeg, [
+  # only slurp in the case where we are in CVS mode;
+  # prerelease and release should get it disted
+  if test "x$GST_PLUGINS_VERSION_NANO" = x1; then
+    AC_MSG_NOTICE(slurping FFmpeg CVS source)
+    AS_SLURP_FFMPEG(gst-libs/ext/ffmpeg, 2003-10-26 10:00 GMT,
+                    HAVE_FFMPEG=yes, HAVE_FFMPEG=no)
+  else
+    AC_MSG_NOTICE(FFmpeg CVS code should be included already)
+    HAVE_FFMPEG=yes
+  fi
+  # we only bother with uninstalled (included) ffmpeg for now
+  AC_DEFINE_UNQUOTED(HAVE_FFMPEG_UNINSTALLED, 1,
+                     [defined if we use uninstalled ffmpeg])
+])
+
+dnl Determine CPU
+case "x${target_cpu}" in
+  xi?86 | k?) HAVE_CPU_I386=yes
+              AC_DEFINE(HAVE_CPU_I386, 1, [Define if the target CPU is an x86])
+              dnl FIXME could use some better detection
+              dnl       (ie CPUID)
+              case "x${target_cpu}" in
+                xi386 | xi486) ;;
+                *)             AC_DEFINE(HAVE_RDTSC, 1, [Define if RDTSC is available]) ;;
+              esac ;;
+  xpowerpc)   HAVE_CPU_PPC=yes
+              AC_DEFINE(HAVE_CPU_PPC, 1, [Define if the target CPU is a PPC]) ;;  xalpha)     HAVE_CPU_ALPHA=yes
+              AC_DEFINE(HAVE_CPU_ALPHA, 1, [Define if the target CPU is an Alpha]) ;;
+  xarm*)      HAVE_CPU_ARM=yes
+              AC_DEFINE(HAVE_CPU_ARM, 1, [Define if the target CPU is an ARM]) ;;
+  xsparc*)    HAVE_CPU_SPARC=yes
+              AC_DEFINE(HAVE_CPU_SPARC, 1, [Define if the target CPU is a PPC]) ;;
+
+  xmips*)     HAVE_CPU_MIPS=yes
+              AC_DEFINE(HAVE_CPU_MIPS, 1, [Define if the target CPU is a MIPS]) ;;
+  xhppa*)     HAVE_CPU_HPPA=yes
+              AC_DEFINE(HAVE_CPU_HPPA, 1, [Define if the target CPU is a HPPA]) ;;
+esac
+
+AM_CONDITIONAL(HAVE_CPU_I386,       test "x$HAVE_CPU_I386" = "xyes")
+AM_CONDITIONAL(HAVE_CPU_PPC,        test "x$HAVE_CPU_PPC" = "xyes")
+AM_CONDITIONAL(HAVE_CPU_ALPHA,      test "x$HAVE_CPU_ALPHA" = "xyes")
+AM_CONDITIONAL(HAVE_CPU_ARM,        test "x$HAVE_CPU_ARM" = "xyes")
+AM_CONDITIONAL(HAVE_CPU_SPARC,      test "x$HAVE_CPU_SPARC" = "xyes")
+
+
+dnl ###########################
+dnl # Configure external libs #
+dnl ###########################
+if test "x$HAVE_FFMPEG" = xyes; then
+  AC_CONFIG_SUBDIRS(gst-libs/ext/ffmpeg/ffmpeg)
+fi 
+
+AC_CONFIG_FILES(
+Makefile
+ext/Makefile
+ext/ffmpeg/Makefile
+gst-libs/Makefile
+gst-libs/ext/Makefile
+gst-libs/ext/ffmpeg/Makefile
+)
+AC_OUTPUT

gst-libs/Makefile.am

+SUBDIRS = ext

m4/as-slurp-ffmpeg.m4

+dnl slurp-ffmpeg.m4 0.1.1
+dnl a macro to slurp in ffmpeg's cvs source inside a project tree
+dnl taken from Autostar Sandbox, http://autostars.sourceforge.net/
+
+dnl Usage:
+dnl AS_SLURP_FFMPEG(DIRECTORY, DATE, [ACTION-IF-WORKED [, ACTION-IF-NOT-WORKED]]])
+dnl
+dnl Example:
+dnl AM_PATH_FFMPEG(lib/ffmpeg, 2002-12-14 12:00 GMT)
+dnl
+dnl make sure you have a Tag file in the dir where you check out that
+dnl is the Tag of CVS you want to have checked out
+dnl it should correspond to the DATE argument you supply, ie resolve to
+dnl the same date
+dnl (in an ideal world, cvs would understand it's own Tag file format as
+dnl a date spec)
+
+AC_DEFUN(AS_SLURP_FFMPEG,
+[
+  # save original dir
+  FAILED=""
+  DIRECTORY=`pwd`
+  # get/update cvs
+  if test ! -d $1; then mkdir -p $1; fi
+  dnl we need to check $srcdir/$1 or it will always checkout ffmpeg even if it is there
+  dnl at least when top_srcdir != top_builddir.
+  dnl FIXME: unfortunately this makes the checkout go into top_srcdir
+  cd $srcdir/$1
+
+  if test ! -e ffmpeg/README; then
+    # check out cvs code
+    AC_MSG_NOTICE(checking out ffmpeg cvs code from $2 into $1)
+    cvs -Q -z4 -d:pserver:anonymous@mplayerhq.hu:/cvsroot/ffmpeg co -D '$2' ffmpeg || FAILED=yes
+  else
+    # compare against Tag file and see if it needs updating
+    if test "`cat Tag`" == "$2"; then
+      AC_MSG_NOTICE(ffmpeg cvs code in sync)
+    else
+      cd ffmpeg 
+      AC_MSG_NOTICE(updating ffmpeg cvs code to $2)
+      cvs -Q -z4 update -dP -D '$2' || FAILED=yes
+      cd ..
+    fi
+  fi
+  if test "x$FAILED" != "xyes"; then
+    echo "$2" > Tag 
+  fi
+  
+  # now go back
+  cd $DIRECTORY
+
+  if test "x$FAILED" == "xyes"; then
+    [$4]
+    false
+  else
+    [$3]
+    true
+  fi
+])