avformat/wavdec: Dont trust the fact chunk for PCM

Fixes Ticket3033

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
vmnc: K&R formatting cosmetics

Signed-off-by: Diego Biurrun <diego@biurrun.de>
vmnc: Port to bytestream2

Fix some buffer overreads.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
vmnc: Check the cursor dimensions

And manage the reallocation failure path.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
vmnc: Use meaningful return values
jpeg2000: Check block length

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
avcodec/h264_refs: modify key frame detection heuristic to detect more cases

Fixes Ticket2968

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/h264: call flush_change() on init

This ensures that all the non zero fields get setup correctly.
Alternatively their initialization could be duplicated.

Fixes Ticket2738

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avi: properly fail if the dv demuxer is missing

CC: libav-stable@libav.org
avi: DV in AVI must be considered single stream

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
avi: directly resync on DV in AVI read failure

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Merge commit 'a66aa0daf290ef157cb3322b034b43d6201c43e9'

* commit 'a66aa0daf290ef157cb3322b034b43d6201c43e9':
  vmnc: K&R formatting cosmetics

Conflicts:
	libavcodec/vmnc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '61cd19b8bc32185c8caf64d89d1b0909877a0707'

* commit '61cd19b8bc32185c8caf64d89d1b0909877a0707':
  vmnc: Port to bytestream2

Conflicts:
	libavcodec/vmnc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '5e992a4682d2c09eed3839c6cacf70db3b65c2f4'

* commit '5e992a4682d2c09eed3839c6cacf70db3b65c2f4':
  vmnc: Check the cursor dimensions

Conflicts:
	libavcodec/vmnc.c

See: 94372592767fb551060217df37f5aa3130ba1ca8
Merged-by: Michael Niedermayer <michaelni@gmx.at>
vp6: Support cropping to AVCodecContext.width/height

In these cases, there is no extradata but only the properly set
width/height values by the demuxer.

This makes sure VP6 in F4V files is cropped properly.

This is similar to what is done for H264 for letting the container
width/height override what's in the bitstream, since 30f515091.

Signed-off-by: Martin Storsjö <martin@martin.st>
flvenc: Don't pretend to support muxing "plain" VP6

The plain VP6 format is vertically flipped compared to VP6F/VP6A.
Support for the plain VP6 format was added in 09d8c0ae831 (which
also introduced support for muxing VP6F properly in general).

Signed-off-by: Martin Storsjö <martin@martin.st>
flvenc: Support muxing VP6A as well

Handle it in the same way as VP6F, except for the codec tag.

Signed-off-by: Martin Storsjö <martin@martin.st>
flvenc: Write proper cropping for VP6 even if there's no extradata

This keeps cropping when remuxing from F4V to FLV.

Signed-off-by: Martin Storsjö <martin@martin.st>
Merge commit '071e29af4d383bdb44d0c87416dee3e4bb597936'

* commit '071e29af4d383bdb44d0c87416dee3e4bb597936':
  vmnc: Use meaningful return values

Merged-by: Michael Niedermayer <michaelni@gmx.at>
prores: Add a codepath for decoding errors