avcodec/mpeg4videodec: Fix nonsense warning

Since db772308941a2a338c7809f90d347219a6a93074 parsing of
mpeg4-extradata lead to a "Failed to parse extradata" warning, because
ff_mpeg4_decode_picture_header returns AVERROR_INVALIDDATA in case that
no VOP was found. This patch adds a parameter to signify whether a
header (where the absence of a VOP does not raise an error) or not is
parsed. The first mode is of course used for parsing headers.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 1 insertions, 1 deletions

diff --git a/libavcodec/mpeg4video.h b/libavcodec/mpeg4video.h
index dd0a59038d..1a5da31928 100644
--- a/libavcodec/mpeg4video.h
+++ b/libavcodec/mpeg4video.h
@@ -163,7 +163,7 @@ void ff_mpeg4_pred_ac(MpegEncContext *s, int16_t *block, int n,
 void ff_set_mpeg4_time(MpegEncContext *s);
 int ff_mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
 
-int ff_mpeg4_decode_picture_header(Mpeg4DecContext *ctx, GetBitContext *gb);
+int ff_mpeg4_decode_picture_header(Mpeg4DecContext *ctx, GetBitContext *gb, int header);
 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
 void ff_mpeg4_clean_buffers(MpegEncContext *s);
 void ff_mpeg4_stuffing(PutBitContext *pbc);