Add opus package.

mingw-w64-opus/0001-correctly-detect-alloca.mingw.patch

@@ -0,0 +1,14 @@
+--- opus-1.1-beta/configure.ac.orig	2013-07-31 06:27:54.930255200 +0000
++++ opus-1.1-beta/configure.ac	2013-07-31 06:28:56.746104800 +0000
+@@ -99,9 +99,9 @@
+ 
+ AS_IF([test "$has_var_arrays" = "no"],
+   [
+-   AC_CHECK_HEADERS([alloca.h])
++   AC_CHECK_HEADERS([malloc.h])
+    AC_MSG_CHECKING(for alloca)
+-   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alloca.h>]],
++   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <malloc.h>]],
+                                       [[int foo=10; int *array = alloca(foo);]])],
+      [ use_alloca=yes;
+        AC_DEFINE([USE_ALLOCA], [], [Make use of alloca])

mingw-w64-opus/PKGBUILD

@@ -0,0 +1,45 @@
+# Maintainer: Alexey Pavlov <alexpux@gmail.com>
+
+_realname=opus
+_mingw_suff=mingw-w64-${CARCH}
+pkgname="${_mingw_suff}-${_realname}"
+pkgver=1.1
+pkgrel=1
+pkgdesc="Codec designed for interactive speech and audio transmission over the Internet (mingw-w64)"
+arch=('any')
+url="http://www.opus-codec.org/"
+license=("BSD")
+makedepends=("${_mingw_suff}-gcc" "${_mingw_suff}-pkg-config")
+depends=("${_mingw_suff}-gcc")
+options=('strip' 'staticlibs')
+source=("http://downloads.us.xiph.org/releases/${_realname}/${_realname}-${pkgver}.tar.gz"
+		0001-correctly-detect-alloca.mingw.patch)
+md5sums=('c5a8cf7c0b066759542bc4ca46817ac6'
+         '006d3e2769d82904837b95abc20d196a')
+
+prepare() {
+	cd "${srcdir}/${_realname}-${pkgver}"
+	patch -p1 -i "${srcdir}/0001-correctly-detect-alloca.mingw.patch"
+	autoreconf -fi
+}
+
+build() {
+	mkdir -p "${srcdir}/build-${MINGW_CHOST}"
+	cd "${srcdir}/build-${MINGW_CHOST}"
+    ../${_realname}-${pkgver}/configure \
+		--prefix=${MINGW_PREFIX} \
+		--build=${MINGW_CHOST} \
+		--host=${MINGW_CHOST} \
+		--target=${MINGW_CHOST} \
+		--enable-custom-modes \
+		--disable-static
+    make
+}
+
+package() {
+    cd "${srcdir}/build-${MINGW_CHOST}"
+	make DESTDIR="${pkgdir}" install
+
+	# Install license
+	#install -m644 ${srcdir}/${_realname}-${pkgver}/COPYING ${pkgdir}${MINGW_PREFIX}/share/licenses/${_realname}/LICENSE
+}