[FFmpeg-devel] [PATCH v5 1/2] lavc/mjpegdec: Decode Huffman-coded lossless JPEGs embedded in DNGs

[Michael Niedermayer]

On Wed, Jul 24, 2019 at 01:20:13PM +0300, velocityra at gmail.com wrote:
> From: Nick Renieris <velocityra at gmail.com>
> 
> Main image data in DNGs is usually comprised of tiles, each of which is a Huffman-encoded lossless JPEG.
> 
> Tested for ljpeg regressions with:
> `ffmpeg -f lavfi -i testsrc=d=1 -vcodec ljpeg test.avi`
> `ffmpeg test.avi out.avi`
> The modified code in ljpeg_decode_rgb_scan runs without issues.
> 
> Signed-off-by: Nick Renieris <velocityra at gmail.com>
> ---
>  libavcodec/mjpegdec.c | 54 ++++++++++++++++++++++++++++++++++++-------
>  libavcodec/mjpegdec.h |  1 +
>  2 files changed, 47 insertions(+), 8 deletions(-)

breaks
tickets/842/testimgl.jpg
should be here: https://trac.ffmpeg.org/raw-attachment/ticket/842/testimgl.jpg

thx

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I have often repented speaking, but never of holding my tongue.
-- Xenocrates
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