From a19e9aea63a44751bedbd3e1b8ba35b4f242fe10 Mon Sep 17 00:00:00 2001
From: Sam Edwards <CFSworks@gmail.com>
Date: Tue, 27 Mar 2018 13:43:01 -0600
Subject: [PATCH] ffmpeg: Enforce minimum supported versions of ffmpeg

lavcodec:  54.86.100
lavformat: 54.59.106
lavutil:   52.13.100

These are the versions included in FFmpeg 1.1, which is the oldest
release that works with Panda already: we've been using
`av_opt_set_sample_fmt` (introduced in FFmpeg 1.1) since
03e96d8c4a903be7222365b40613429768659892 (August 2013) and nobody has
complained since. In other words, I'm not dropping support for anything
here, I'm just making the supported versions explicit.
---
 panda/src/ffmpeg/config_ffmpeg.cxx | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/panda/src/ffmpeg/config_ffmpeg.cxx b/panda/src/ffmpeg/config_ffmpeg.cxx
index 8cbc9f51ec..be788eb2f8 100644
--- a/panda/src/ffmpeg/config_ffmpeg.cxx
+++ b/panda/src/ffmpeg/config_ffmpeg.cxx
@@ -22,12 +22,26 @@
 
 extern "C" {
   #include "libavcodec/avcodec.h"
+  #include "libavformat/avformat.h"
+  #include "libavutil/avutil.h"
 }
 
 #if !defined(CPPPARSER) && !defined(BUILDING_FFMPEG)
   #error Buildsystem error: BUILDING_FFMPEG not defined
 #endif
 
+#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(54, 86, 100)
+  #error Minimum supported version of libavcodec is 54.86.100.
+#endif
+
+#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(54, 59, 106)
+  #error Minimum supported version of libavformat is 54.59.106.
+#endif
+
+#if LIBAVUTIL_VERSION_INT < AV_VERSION_INT(52, 13, 100)
+  #error Minimum supported version of libavutil is 52.13.100.
+#endif
+
 ConfigureDef(config_ffmpeg);
 NotifyCategoryDef(ffmpeg, "");