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

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.

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

Reviewed-by: Wei Gao <highgod0401@gmail.com>
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>

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

Allow some dumb factorizations, slightly decrease spaghetti factor.

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>

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>

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

As another example of bizarre compiler behavior clang groks the
-Wmaybe-uninitialized option, but not -Wno-maybe-uninitialized
and spews a warning for every file that gets compiled.

* qatar/master:
  avfilter/buffer: Suppress deprecation warning for avfilter_unref_buffer

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

* commit '82c86d0b':
  graph2dot: Add missing #include for av_get_channel_layout_string()

See: 1acd2f6bMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '48715285':
  graph2dot: Fix use of deprecated API

See: 59360cd4
See: ecade984Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '70cbf334':
  vdpau: Add missing #includes to fix standalone header compilation

Conflicts:
	libavcodec/vdpau_internal.h

Not completely merged as this would break use of vdpau.h from C++
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e2b5b097':
  x86: rv40dsp: Use PAVGB instruction macro where appropriate
Merged-by: Michael Niedermayer <michaelni@gmx.at>