media-libs/libaubio: add fix for ffmpeg 4.0 (#2962)

media-libs/libaubio/libaubio-0.4.6.recipe

@@ -9,10 +9,11 @@ live audio."
 HOMEPAGE="https://aubio.org"
 COPYRIGHT="2003-2013 Paul Brossier"
 LICENSE="GNU GPL v3"
-REVISION="2"
+REVISION="3"
 SOURCE_URI="https://aubio.org/pub/aubio-$portVersion.tar.bz2"
 CHECKSUM_SHA256="bdc73be1f007218d3ea6d2a503b38a217815a0e2ccc4ed441f6e850ed5d47cfb"
 SOURCE_DIR="aubio-$portVersion"
+PATCHES="libaubio-$portVersion.patchset"
 
 ARCHITECTURES="!x86_gcc2 x86 x86_64"
 SECONDARY_ARCHITECTURES="x86"

media-libs/libaubio/patches/libaubio-0.4.6.patchset

@@ -0,0 +1,22 @@
+From 5690daf759b473b9d13b4547ef37adc2695cf524 Mon Sep 17 00:00:00 2001
+From: James Cowgill <jcowgill@jcowgill.uk>
+Date: Sun, 25 Feb 2018 14:23:25 +0000
+Subject: Fix build with FFmpeg 4.0
+
+
+diff --git a/src/io/source_avcodec.c b/src/io/source_avcodec.c
+index ccdce807..8197445c 100644
+--- a/src/io/source_avcodec.c
++++ b/src/io/source_avcodec.c
+@@ -58,7 +58,11 @@
+ #include "fmat.h"
+ #include "source_avcodec.h"
+ 
++#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(56, 56, 0)
+ #define AUBIO_AVCODEC_MAX_BUFFER_SIZE FF_MIN_BUFFER_SIZE
++#else
++#define AUBIO_AVCODEC_MAX_BUFFER_SIZE AV_INPUT_BUFFER_MIN_SIZE
++#endif
+ 
+ struct _aubio_source_avcodec_t {
+   uint_t hop_size;