The data the marker contains is only 2 bytes and they're 0x0000 in the samples above. I don't know what they're for.
Στις Σάβ, 10 Αυγ 2019 στις 3:16 μ.μ., ο/η Michael Niedermayer <mich...@niedermayer.cc> έγραψε: > > On Fri, Aug 09, 2019 at 07:29:57PM +0300, Nick Renieris wrote: > > From: Nick Renieris <velocit...@gmail.com> > > > > Samples: > > - Embedded JPEG images in the DNG images here: > > https://www.photographyblog.com/previews/pentax_k1_photos > > > > Signed-off-by: Nick Renieris <velocit...@gmail.com> > > --- > > libavcodec/mjpegdec.c | 11 +++++++++-- > > 1 file changed, 9 insertions(+), 2 deletions(-) > > > > diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c > > index 0a920a7144..e7b273a363 100644 > > --- a/libavcodec/mjpegdec.c > > +++ b/libavcodec/mjpegdec.c > > @@ -1807,8 +1807,15 @@ static int mjpeg_decode_app(MJpegDecodeContext *s) > > int len, id, i; > > > > len = get_bits(&s->gb, 16); > > - if (len < 6) > > - return AVERROR_INVALIDDATA; > > + if (len < 6) { > > + if (s->bayer) { > > + // Pentax K-1 (digital camera) JPEG images embedded in DNG > > images contain useless APP0 markers > > "useless" is a quite generic term, is it known what the contain why they > are there ? > > thx > > [...] > -- > Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB > > Asymptotically faster algorithms should always be preferred if you have > asymptotical amounts of data > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
