The driver being used is detected inside av_hwdevice_ctx_init() and
the quirks field then set from a table of known device.  If this
behaviour is unwanted, the user can also set the quirks field
manually.

Also adds the Intel i965 driver quirk (it does not destroy parameter
buffers used in a call to vaRenderPicture()) and detects that driver
to set it.

(cherry picked from commit 4926fa9a)

This prevents a division by zero in read_packet.
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

Set up the encoder with a hardware context which will match the one
the decoder will use when it starts later.

Includes 02c27619, with additional
hackery to get around a3a0230a being
skipped.

* commit '444a3626':
  pixdesc: Fix AVCOL_TRC_BT2020_12 name
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'f172e22d':
  pixdesc: Add aliases to SMPTE color properties
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '8a62d2c2':
  vaapi_encode: Maintain a pool of bitstream output buffers
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'bd31c61c':
  avconv: Remove hw_device_ctx output filter reinit hack

Noop, since our hwaccel infrastructure still requires this.
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '4a081f22':
  libavcodec: fix constness in clobber test avcodec_open2() wrappers
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '02c27619':
  avconv_qsv: use the device creation API

Not merged, our ffmpeg hwaccel infra is not quite the same as avconvs.
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '232399e3':
  avconv: pass the hwaccel frames context to the decoder
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'a3a0230a':
  avconv: init filtergraphs only after we have a frame on each input

This commit is a noop since it doesn't apply cleanly due to differences
in the dataflow between avconv and ffmpeg, and thus fixing this in the
scope of a merge is unfeasible.
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '3e265ca5':
  avconv: do packet ts rescaling in write_packet()

This commit is a noop since it doesn't apply cleanly due to differences
in the dataflow between avconv and ffmpeg, and thus fixing this in the
scope of a merge is unfeasible.
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit '50722b4f':
  avconv: decouple configuring filtergraphs and setting output parameters
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

* commit 'ba7397ba':
  avconv: factor out initializing stream parameters for encoding
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

Based on a patch by Yogender Gupta <ygupta@nvidia.com>

The handling of the other block sizes was limited to 'SCALED == 0' in
commit dc96c0f9, so this assert should
be disabled, too, as it can now be triggered.
Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

Fixes building for Windows x86 with MSVC using the link libraries distributed with the CUDA SDK.

check_lib2 is required here because it includes the header to get the full signature of the
function, including the stdcall calling convention and all of its arguments, which enables
the linker to determine the fully qualified object name and resolve it through the import
library, since the CUDA SDK libraries do not include un-qualified aliases.

Pro-MPEG Code of Practice #3 release 2 forward error correction for rtp_mpegts streams
Signed-off-by: Vlad Tarca <vtarca@mobibase.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

AVFilterLink.frame_count is supposed to count the number of frames
that were passed on the link, but with min_samples, that number is
not always the same for the source and destination filters.
With the addition of a FIFO on the link, the difference will become
more significant.

Split the variable in two: frame_count_in counts the number of
frames that entered the link, frame_count_out counts the number
of frames that were sent to the destination filter.

The test is not supposed to cover audio.
Also, using -vframes along with an audio stream depends on
the exact order the frames are processed by filters, it is
too much constraint to guarantee.

This should fix build with Solaris CC.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Jan Sebechlebsky <sebechlebskyjan@gmail.com>
Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Marton Balint <cus@passwd.hu>

Fixes valgrind warning about "Conditional jump or move depends on uninitialised value(s)"
Reviewed-by: Andreas Cadhalpun <andreas.cadhalpun@googlemail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

No need to run the whole fate-lavf set. fate-lavf-flv_fmt is enough to
create the required source file.
Signed-off-by: James Almer <jamrial@gmail.com>

Fixes https://trac.ffmpeg.org/ticket/5940#ticketReviewed-by: Michael Niedermayer <&lt;michael@niedermayer.cc&gt;>
Signed-off-by: Robert Nagy <ronag89@gmail.com>
Signed-off-by: Steven Liu <lingjiujianke@gmail.com>

Fixes: fuzz-2-ffmpeg_SUBTITLE_AV_CODEC_ID_SUBRIP_fuzzer

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

Otherwise put_bits can be called with a value that doesn't fit in the
sample_len, causing an assertion failure.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

From 'man ppm': The maximum color value (Maxval), again in ASCII decimal.
                Must be less than 65536.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

This fixes a heap-buffer-overflow detected by AddressSanitizer.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

Also contains the following changes to the library:
- add ff_ prefix to functions
- remove cplusplus defines.
- add FF_ prefix to contants and some structs
- remove true peak calculation feature, since it uses its own resampler, and
  af_loudnorm does not need it.
- remove version info and some fprintf(stderr) functions
- convert to use av_malloc
- always use histogram mode for LRA calculation, otherwise LRA data is slowly
  consuming memory making af_loudnorm unfit for 24/7 operation. It also uses a
  BSD style linked list implementation which is probably not available on all
  platforms. So let's just remove the classic mode which not uses histogram.
- add ff_thread_once for calculating static histogram tables
- convert some functions to void which cannot fail
- remove intrinsics and some unused headers
- add support for planar audio
- remove channel / sample rate changer function, in ffmpeg usually we simply
  alloc a new context
- convert some static variables to defines
- declare static histogram variables as aligned
- convert some initalizations to mallocz
- add window size parameter to init function and remove window size setter
  function
- convert return codes to AVERROR
- fix indentation
Signed-off-by: Marton Balint <cus@passwd.hu>

Based on a patch by Kyle Swanson <k@ylo.ph>.
Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Lou Logan <lou@lrcd.com>

Documents options and behaviour, noting when 'chunks' option will
not be honoured.
Signed-off-by: Tom Butterworth <bangnoise@gmail.com>
Signed-off-by: Martin Vignali <martin.vignali@gmail.com>

It can read less than the requested amount, in which case buf contains
uninitialized data, causing problems like segmentation faults later on.

Also make sure that image->size is positive, so that it can't match a
negative error code.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

This problem was introduced in commit
4b90dcb8.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

The implicit checks via v_data_size and a_data_size don't work in the case
'(hdr_size > 7) && !ctx->alpha_info'.

This fixes segmentation faults due to invalid reads.

This problem was introduced in commit
547c2f00.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

Signed-off-by: Sasi Inguva <isasi@google.com>
Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Sasi Inguva <isasi@google.com>
Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>