[FFmpeg-cvslog] avcodec/huffyuv: remove gray8a (the format is listed but not supported by the implementation)

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Wed Jul  3 23:25:07 2019 +0200| [6aaa01afe4fb774d0767684aa00f075b0ee5fca6] | committer: Michael Niedermayer

avcodec/huffyuv: remove gray8a (the format is listed but not supported by the implementation)

Fixes: null pointer dereference
Fixes: 15464/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HYMT_fuzzer-5681391150301184

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6aaa01afe4fb774d0767684aa00f075b0ee5fca6
---

 libavcodec/huffyuvdec.c | 3 ---
 libavcodec/huffyuvenc.c | 2 --
 2 files changed, 5 deletions(-)

diff --git a/libavcodec/huffyuvdec.c b/libavcodec/huffyuvdec.c
index 27f650d7bf..771481fd03 100644
--- a/libavcodec/huffyuvdec.c
+++ b/libavcodec/huffyuvdec.c
@@ -418,9 +418,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
         case 0x0F0:
             avctx->pix_fmt = AV_PIX_FMT_GRAY16;
             break;
-        case 0x170:
-            avctx->pix_fmt = AV_PIX_FMT_GRAY8A;
-            break;
         case 0x470:
             avctx->pix_fmt = AV_PIX_FMT_GBRP;
             break;
diff --git a/libavcodec/huffyuvenc.c b/libavcodec/huffyuvenc.c
index 3662c173ec..a6f0d06445 100644
--- a/libavcodec/huffyuvenc.c
+++ b/libavcodec/huffyuvenc.c
@@ -268,7 +268,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
     case AV_PIX_FMT_YUVA420P:
     case AV_PIX_FMT_YUVA422P:
     case AV_PIX_FMT_GBRAP:
-    case AV_PIX_FMT_GRAY8A:
     case AV_PIX_FMT_YUV420P9:
     case AV_PIX_FMT_YUV420P10:
     case AV_PIX_FMT_YUV420P12:
@@ -1122,7 +1121,6 @@ AVCodec ff_ffvhuff_encoder = {
         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
         AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
         AV_PIX_FMT_GBRAP,
-        AV_PIX_FMT_GRAY8A,
         AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV420P16,
         AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV422P16,
         AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV444P16,