See previous commit for a rationale.

This makes the sorting of the colors along an axis (r, g or b)
predictible, and thus testable under FATE. The performance is not really
an issue here since the function is called only once at the end and will
need to sort very small number of entries, so an alternative would be to
make the sorting functions (see DECLARE_CMP_FUNC()) fallback on another
axis in case of equality. This approach was actually simpler.

I don't know if there is any advantage in using a multidimensional sort,
but it will affect the final palette one way or another.

This avoids a null pointer dereference of pkt->data.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

It is used in adx_read_packet, which currently depends on the decoder/parser setting this value between reading the file header and demuxing the first packet.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This assumes CBR (which is true for all samples i have)

Previous version reviewed by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Value taken from the decoder implementation
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

Fixes: unaligned memory access
Fixes: signal_sigsegv_3344165_576_cov_3406448105_DBLK_A_MAIN10_VIXS_2.bit

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Suggested-by: Christophe Gisquet <christophe.gisquet@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes undefined behavior
Fixes: signal_sigsegv_24169e6_3445_cov_3778346427_snow_chroma_bug.avi

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes: signal_sigsegv_30420a5_2388_cov_1489993561_integra_lavf.mp4

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

uses comma as macro parameter separator
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* cehoyos/master:
  Allow muxing h264 into ts with startcode "001" instead of "0001".
  lavfi/fade: Do not overread input buffer.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

log2 values which imply numeric overflow are not supported
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Also drop initialization since it is initialized later on before any
usage.

Fixes ticket #2220.
Fixes ticket #4324.

Fixes out of array read
Fixes: asan_heap-oob_ae74b5_3610_cov_1739568095_test.3g2

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes out of array read
Fixes: asan_heap-oob_4d4eb0_3994_cov_3169972261_zmbv_15bit.avi

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes out of array read
Fixes: asan_heap-oob_2ff30d2_3479_cov_3803648058_src13_hrc7_525_420_2.264

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

gas-preprocessor and armasm fail otherwise

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

* commit '85b3b1c4':
  xcbgrab: Unbreak parsing filename options

Conflicts:
	libavdevice/xcbgrab.c

See: db442c87Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'b31328d0':
  xcbgrab: Provide better names for the y and x option

Conflicts:
	doc/indevs.texi
	libavdevice/x11grab.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'da7e5619':
  matroskaenc: Allow writing track "forced" flag

See: d88d0b6dMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd594dbec':
  rtpdec: Rename the free method to close
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '8e32b1f0':
  libavformat: Use ffio_free_dyn_buf where applicable
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '199fb402':
  rtpdec: Use ffio_free_dyn_buf

Conflicts:
	libavformat/rtpdec_latm.c
	libavformat/rtpdec_svq3.c
	libavformat/rtpdec_xiph.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '8a273a74':
  avio: Add an internal utility function for freeing dynamic buffers
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '078d43e2':
  rtpdec: Free depacketizers if the init function failed
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'bb4a310b':
  rtpdec: Don't free the payload context in the .free function

Conflicts:
	libavformat/rtpdec_latm.c
	libavformat/rtpdec_mpeg4.c
	libavformat/rtpdec_mpegts.c
	libavformat/rtpdec_xiph.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f4b59334':
  rtpdec: Remove the now unused .alloc field
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '78791c08':
  rtpdec: Use .init instead of .alloc to set default values

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

* commit '88434f97':
  rtpdec: Remove unnecessary inline attributes
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ec96a89c':
  rtpdec: Don't pass non-const pointers to fmtp attribute parsing functions
Merged-by: Michael Niedermayer <michaelni@gmx.at>