This needs to be accessible for libavfilter in the next commit.

Split away option settings, sanity checks and general setup.

Mostly cosmetic changes adding some intermediate to shorten the lines.

This takes into account planar vs. packed when comparing to find the closest
sample format match.

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

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

* qatar/master:
  avcodec: Convert some commented-out printf/av_log instances to av_dlog
  avcodec: Drop silly and/or broken printf debug output
  avcodec: Drop some silly commented-out av_log() invocations
  avformat: Convert some commented-out printf/av_log instances to av_dlog
  avformat: Remove non-compiling and/or silly commented-out printf/av_log statements
  Remove some silly disabled code.
  ac3dec: ensure get_buffer() gets a buffer for the correct number of channels

Conflicts:
	libavcodec/dnxhddec.c
	libavcodec/ffv1.c
	libavcodec/h264.c
	libavcodec/h264_parser.c
	libavcodec/mjpegdec.c
	libavcodec/motion_est_template.c
	libavcodec/mpegaudiodec.c
	libavcodec/mpegvideo_enc.c
	libavcodec/put_bits.h
	libavcodec/ratecontrol.c
	libavcodec/wmaenc.c
	libavdevice/timefilter.c
	libavformat/asfdec.c
	libavformat/avidec.c
	libavformat/avienc.c
	libavformat/flvenc.c
	libavformat/utils.c

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

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

If there is an error during frame parsing, but AVCodecContext.channels was
changed and AC3DecodeContext.out_channels was set previously, the two may not
match.

Fixes CVE-2012-2802
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

CC: libav-stable@libav.org

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

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

It never belonged to swscale_unscaled.c

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

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

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

qt-faststart is terribly slow when the input file and the output file
are on a slow disk like a SD card. By increasing the copy_buffer from
1K to 32M I decreased the processing time on a sample file from
1600 seconds to 4 seconds. The timing difference is during 'copying
rest of file'.

S:\SD_VIDEO\PRG001>e:\utils\qt-faststart 00005.mp4 5.mp4
ftyp          0 32
free         32 8
mdat         40 13744391
moov   13744431 141848
 patching stco atom...
 patching stco atom...
 writing ftyp atom...
 writing moov atom...
 copying rest of file...

Execution time: 1576.259 s

S:\SD_VIDEO\PRG001>s:\utils\qt-faststart 00005.mp4 5.mp4
ftyp          0 32
free         32 8
mdat         40 13744391
moov   13744431 141848
 patching stco atom...
 patching stco atom...
 writing ftyp atom...
 writing moov atom...
 copying rest of file...

Execution time: 3.846 s

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

iv decrypt handling code needs to be executed regardless of CONFIG_SMALL

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

This fix a bunch of "assignment from incompatible pointer type" warnings
with GCC.

Also fix some dates (use the commit date instead of the author date).

Note that a lavf bump was missing so I'm using 54.28.100 as a reference.

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

this simplifies things are avoids a temporary

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

Based on test code by: Giorgio Vazzana <mywing81@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

In CBC mode, when src=dst and we are decrypting a block different
from the first one, we need to save the current block of ciphertext
(which will constitute the initialization vector for the next block)
before we overwrite it.

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

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>