Merge remote-tracking branch 'qatar/master'

* qatar/master:
  print_options: do not generate docs for options without enc or dec flags
  mpeg12: do not fail on zero dimensions in the sequence header.

Conflicts:
	libavcodec/mpeg12.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 8 insertions, 1 deletions

diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index 4a83cfd..3f5548d 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -2026,6 +2026,12 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
 
     width  = get_bits(&s->gb, 12);
     height = get_bits(&s->gb, 12);
+    if (width == 0 || height == 0) {
+        av_log(avctx, AV_LOG_WARNING, "Invalid horizontal or vertical size "
+               "value.\n");
+        if (avctx->err_recognition & AV_EF_BITSTREAM)
+            return AVERROR_INVALIDDATA;
+    }
     s->aspect_ratio_info = get_bits(&s->gb, 4);
     if (s->aspect_ratio_info == 0) {
         av_log(avctx, AV_LOG_ERROR, "aspect ratio has forbidden 0 value\n");
@@ -2343,7 +2349,8 @@ static int decode_chunks(AVCodecContext *avctx,
             picture_start_code_seen = 1;
 
             if (s2->width <= 0 || s2->height <= 0) {
-                av_log(avctx, AV_LOG_ERROR, "%dx%d is invalid\n", s2->width, s2->height);
+                av_log(avctx, AV_LOG_ERROR, "Invalid frame dimensions %dx%d.\n",
+                       s2->width, s2->height);
                 return AVERROR_INVALIDDATA;
             }