Fixes packet pts of samples which contain ctts entries with count <= 0.

* commit '4fd34e63':
  h264: remove pointless setting of some variables in loop_filter
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '9c858ce3':
  h264: remove a pointless comment
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit 'b77fffa1':
  h264: make slice threading work with deblocking_filter=1

again label, and SLICE_SINGLETHREAD error handling are preserved as that
SLICE_SINGLETHREAD can be raised on a remaining case.

slice_context_count is also kept since it's still in use.
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '370ddc7b':
  h264: remove H264Context.pict_type
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '56087ec0':
  h264: drop a pointless indirection
Merged-by: Clément Bœsch <clement@stupeflix.com>

Fixes audiotoolbox decoding of QDMC and QDM2.

* commit '0e7772c5':
  h264: remove unused H264SliceContext.rbsp_buffer
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '7f045c44':
  h264: merge ff_h264_free_context() into h264_decode_end()
Merged-by: Clément Bœsch <clement@stupeflix.com>

* commit '99c554ef':
  h264: eliminate low_delay

ff_print_debug_info2() is adjusted to allow a NULL pointer as low_delay.
It's only useful for MPEG codecs with the exception of H264.
Merged-by: Clément Bœsch <clement@stupeflix.com>

And sets frames pkt_dts to AV_NOPTS_VALUE as we do not want lavc/utils
to overwrite the field with incorrect values as the decoder is
asynchronous.

Fixes error:
libavcodec/videotoolbox.c:511:18: error: implicit declaration of function
'CMVideoFormatDescriptionCreateFromH264ParameterSets' is invalid in C99

This was added in 10.9:
https://developer.apple.com/reference/coremedia/1489818-cmvideoformatdescriptioncreatefr?language=objc

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

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

Signed-off-by: Thomas Mundt <loudmax@yahoo.de>
Signed-off-by: James Almer <jamrial@gmail.com>

The caps_internal field has moved without major bump and direct
access causes crashes, found when testing 3.1
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

In order to do that, we keep track of the total duration of packets in a packet
queue.
Signed-off-by: Marton Balint <cus@passwd.hu>

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

We haven't had a stable release since the packet_gap addition, so probably it
is worth reworking the option to something that makes more sense to the end
user. Also add burst_bits option to specify maximum length of bit bursts.
Signed-off-by: Marton Balint <cus@passwd.hu>

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

Signed-off-by: Thomas Mundt <loudmax@yahoo.de>
Signed-off-by: James Almer <jamrial@gmail.com>

Order of evaluation of parameters in C is not defined.

Should fix compilation.

Regression introduced by commit 63adb360Signed-off-by: James Almer <jamrial@gmail.com>

* commit '5b35b290':
  h264: remove a stale comment
Merged-by: Clément Bœsch <u@pkh.me>

* commit '89ae244e':
  h264_refs: remove an unused parameter from ff_h264_fill_mbaff_ref_list()
Merged-by: Clément Bœsch <u@pkh.me>

* commit '755f79f8':
  h264_refs: make the H264Context const where possible

ff_h264_decode_ref_pic_list_reordering() and h264_initialise_ref_list()
do not have a const H264Context * as they modify the default_ref inside
that context.
Merged-by: Clément Bœsch <u@pkh.me>

* commit 'a2fd5478':
  h264_refs: reorder functions to avoid forward declarations
Merged-by: Clément Bœsch <u@pkh.me>

* commit '0ba471d7':
  h264: eliminate copy_fields

Added a copy of default_ref which isn't present in Libav.
Merged-by: Clément Bœsch <u@pkh.me>

* commit '72da8d9b':
  h264_parser: remove the remaining dependencies on the h264 decoder
Merged-by: Clément Bœsch <u@pkh.me>

This makes h264_find_frame_end() not depend on H264Context anymore.

This helps removing the H264Context from the H264ParseContext.

* commit '98c97994':
  h264: decouple extradata parsing from the decoder

Main changes:

- move get_avc_nalsize() inside h264_parser.c and make it use
  H264ParseContext instead of H264Context. This helps fixing
  fate-flv-demux.

- Also use is_avc/nal_length_size from the H264ParseContext in various
  places instead of the H264Context one as that's the fields now filled
  by ff_h264_decode_extradata()

- h264_parse: dont fail decode_extradata_ps() due to nal split failure.
  Change by Michael to fix decoding of h264/ref_10.avi.
Merged-by: Clément Bœsch <u@pkh.me>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This reverts commit 9219ec93.

Fixes Ticket 5411