The ico probe function is pretty weak just checking a few bytes for being 0, 1 or not 0

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

* qatar/master:
  h263dsp: K&R formatting cosmetics
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '0338c396':
  dsputil: Split off H.263 bits into their own H263DSPContext

Conflicts:
	configure
	libavcodec/mpegvideo.h
	libavcodec/mpegvideo_enc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

Also remove array element numbering comments.

Fixes playback of some AAC streams, which are otherwise mangled by the
parser, and stss is typically only valid for video anyway.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* qatar/master:
  Remove #undefs for formerly forbidden system functions
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit 'cffecc0e':
  avfilter/graphparser: Directly free filter memory if initialization fails

Conflicts:
	libavfilter/graphparser.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Wei Gao <highgod0401@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Dave Yeo <daveryeo@telus.net>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes Ticket #2936.

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

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

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

Fixes probetest failure
Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

See: https://trac.ffmpeg.org/ticket/3024

The macros forbidding the system functions no longer exist, obviating
the need for the #undefs.

Fixes accumulation of data in case of significant silence injections
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

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

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

* cus/stable:
  ffplay: add smarter method for determining video picture duration
  ffplay: add frame duration estimated from frame rate to VideoPicture
  ffplay: avoid code duplication in AVFILTER enabled and disabled case
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* qatar/master:
  configure: Move -Wno-maybe-uninitialized check into gcc section
Merged-by: Michael Niedermayer <michaelni@gmx.at>

- consider it an invalid PTS when the next PTS value is the same as the current one
- in case of invalid or unknown PTS, return vp->duration

This fixes ffplay part of ticket #3005.
Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

1789 decicycles in idct_idct_4x4_add_c, 262136 runs, 8 skips
1839 decicycles in idct_idct_4x4_add_c, 524270 runs, 18 skips
1864 decicycles in idct_idct_4x4_add_c, 1048548 runs, 28 skips

529 decicycles in ff_vp9_idct_idct_4x4_add_ssse3, 262138 runs, 6 skips
516 decicycles in ff_vp9_idct_idct_4x4_add_ssse3, 524282 runs, 6 skips
474 decicycles in ff_vp9_idct_idct_4x4_add_ssse3, 1048565 runs, 11 skips

(~3.9x faster)

7726 decicycles in idct_idct_8x8_add_c, 1048433 runs, 143 skips
7732 decicycles in idct_idct_8x8_add_c, 2096882 runs, 270 skips
7731 decicycles in idct_idct_8x8_add_c, 4193772 runs, 532 skips

1145 decicycles in ff_vp9_idct_idct_8x8_add_ssse3, 1048549 runs, 27 skips
1137 decicycles in ff_vp9_idct_idct_8x8_add_ssse3, 2097097 runs, 55 skips
1086 decicycles in ff_vp9_idct_idct_8x8_add_ssse3, 4194188 runs, 116 skips

(~7.1x faster)

Overall decode time before commit:
  16.48s user 0.03s system 99% cpu 16.526 total
  16.54s user 0.01s system 99% cpu 16.566 total
  16.46s user 0.03s system 99% cpu 16.511 total

Overall decode time after commit:
  16.34s user 0.02s system 99% cpu 16.378 total
  16.28s user 0.02s system 99% cpu 16.315 total
  16.32s user 0.03s system 99% cpu 16.366 total

Tested on i7 920 with 40s 1080p footage.