ffmpeg: add a recipe, and remove the libav recipe

The reasons for the switch are here:
http://lists.openembedded.org/pipermail/openembedded-core/2015-July/107091.html
http://lists.openembedded.org/pipermail/openembedded-core/2016-January/116007.html

Changes made to libav recipe:
- drop libav-fix-CVE-2014-9676.patch, the fix is available upstream
- merge .inc into .bb, only one upstream version (latest one) is provided
- drop separate libpostproc recipe, the library is provided directly
from ffmpeg source tree
- drop ARM tweaks; they date to classic-OE, need to be retested against the
new code and probably haven't been relevant for a long time
- drop PACKAGECONFIG options that are no longer provided upstream
- drop build and packaging tweaks that don't seem to do anything useful
and also date back to classic OE; if you run into issues, please report
- explicitly enable PIC and disable stripping of binaries

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

1 files changed, 0 insertions, 99 deletions

diff --git a/meta/recipes-multimedia/libav/libav/libav-fix-CVE-2014-9676.patch b/meta/recipes-multimedia/libav/libav/libav-fix-CVE-2014-9676.patch
deleted file mode 100644
index 94213a74ef..0000000000
--- a/meta/recipes-multimedia/libav/libav/libav-fix-CVE-2014-9676.patch
+++ /dev/null
@@ -1,99 +0,0 @@
-Upstream-Status: Backport
-CVE: CVE-2014-9676
-
-Backport patch to fix CVE-2014-9676.
-
-https://security-tracker.debian.org/tracker/CVE-2014-9676
-https://git.libav.org/?p=libav.git;a=commit;h=b3f04657368a32a9903406395f865e230b1de348
-
-Signed-off-by: Kai Kang <kai.kang@windriver.com>
----
-From b3f04657368a32a9903406395f865e230b1de348 Mon Sep 17 00:00:00 2001
-From: Luca Barbato <lu_zero@gentoo.org>
-Date: Mon, 5 Jan 2015 10:40:41 +0100
-Subject: [PATCH] segment: Fix the failure paths
-
-A failure in segment_end() or segment_start() would lead to freeing
-a dangling pointer and in general further calls to seg_write_packet()
-or to seg_write_trailer() would have the same faulty behaviour.
-
-CC: libav-stable@libav.org
-Reported-By: luodalongde@gmail.com
----
- libavformat/segment.c | 32 ++++++++++++++++++++------------
- 1 file changed, 20 insertions(+), 12 deletions(-)
-
-diff --git a/libavformat/segment.c b/libavformat/segment.c
-index 52da6b9..bcfd1f9 100644
---- a/libavformat/segment.c
-+++ b/libavformat/segment.c
-@@ -184,6 +184,13 @@ static void close_null_ctx(AVIOContext *pb)
-     av_free(pb);
- }
- 
-+static void seg_free_context(SegmentContext *seg)
-+{
-+    avio_closep(&seg->pb);
-+    avformat_free_context(seg->avf);
-+    seg->avf = NULL;
-+}
-+
- static int seg_write_header(AVFormatContext *s)
- {
-     SegmentContext *seg = s->priv_data;
-@@ -265,12 +272,9 @@ static int seg_write_header(AVFormatContext *s)
-     }
- 
- fail:
--    if (ret) {
--        if (seg->list)
--            avio_close(seg->pb);
--        if (seg->avf)
--            avformat_free_context(seg->avf);
--    }
-+    if (ret < 0)
-+        seg_free_context(seg);
-+
-     return ret;
- }
- 
-@@ -282,6 +286,9 @@ static int seg_write_packet(AVFormatContext *s, AVPacket *pkt)
-     int64_t end_pts = seg->recording_time * seg->number;
-     int ret, can_split = 1;
- 
-+    if (!oc)
-+        return AVERROR(EINVAL);
-+
-     if (seg->has_video) {
-         can_split = st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
-                     pkt->flags & AV_PKT_FLAG_KEY;
-@@ -322,11 +329,8 @@ static int seg_write_packet(AVFormatContext *s, AVPacket *pkt)
-     ret = ff_write_chained(oc, pkt->stream_index, pkt, s);
- 
- fail:
--    if (ret < 0) {
--        if (seg->list)
--            avio_close(seg->pb);
--        avformat_free_context(oc);
--    }
-+    if (ret < 0)
-+        seg_free_context(seg);
- 
-     return ret;
- }
-@@ -335,7 +339,11 @@ static int seg_write_trailer(struct AVFormatContext *s)
- {
-     SegmentContext *seg = s->priv_data;
-     AVFormatContext *oc = seg->avf;
--    int ret;
-+    int ret = 0;
-+
-+    if (!oc)
-+        goto fail;
-+
-     if (!seg->write_header_trailer) {
-         if ((ret = segment_end(oc, 0)) < 0)
-             goto fail;
--- 
-2.4.1.314.g9532ead
-