The type of the result of a shift operation is unaffected by the type of
the right operand, so some existing code overflows with undefined behaviour
when the element length is 32.  Add a helper macro to calculate the maximum
value correctly and then use it everywhere this pattern appears.
Found-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com>

In the previous implementation the first input or output device
was skipped when device_next was called with prev = NULL
Signed-off-by: Felix Matouschek <felix@matouschek.org>
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

test extract color and alpha
with the three main kind of hap frame :
- no snappy compression
- snappy compression and one chunk
- snappy compression and several chunks (16 here)

like the bsf filter need to be used with vtag and encoder edition
also test the information of the target mov for color and alpha

If the string consists entirely of whitespace, this could in theory
continue to write '\0' before the start of the memory allocation. In
practice, it didn't really happen: the generic HTTP header parsing code
already skips leading whitespaces, so the string is either empty, or
consists a non-whitespace. (The generic code and the cookie code
actually have different ideas about what bytes are whitespace: the
former uses av_isspace(), the latter uses WHITESPACES. Fortunately,
av_isspace() is a super set of the http.c specific WHITESPACES, so
there's probably no case where the above assumption could have been
broken.)

It's trivial to craft a HTTP response that will make the code for
skipping trailing whitespace access and possibly overwrite bytes outside
of the memory allocation. Why this can happen is blindingly obvious: it
accesses cstr[strlen(cstr)-1] without checking whether the string is
empty.

libavformat prints a warning that the cookie couldn't be parsed (see
callers of parse_cookie()). This is obviously not true - it could be
parsed, but was simply ignored. Don't return an error to avoid the
warning.

This adds a way for an API user to transfer QP data and metadata without
having to keep the reference to AVFrame, and without having to
explicitly care about QP APIs. It might also provide a way to finally
remove the deprecated QP related fields. In the end, the QP table should
be handled in a very similar way to e.g. AV_FRAME_DATA_MOTION_VECTORS.

There are two side data types, because I didn't care about having to
repack the QP data so the table and the metadata are in a single
AVBufferRef. Otherwise it would have either required a copy on decoding
(extra slowdown for something as obscure as the QP data), or would have
required making intrusive changes to the codecs which support export of
this data.

The new side data types are added under deprecation guards, because I
don't intend to change the status of the QP export as being deprecated
(as it was before this patch too).

Everything related to the QP data is deprecated, with qp_table_buf being
an inconsistent exception. Some parts were under the deprecation guards,
some not. It probably didn't even compile.

Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

fix ticket: #7021
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

move fmp4_init_filename init in if else for first fmp4_init_filename set
value operation.
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

fmp4_init_filename should append after base_output_dirname
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

They belong in avcodec.
Signed-off-by: James Almer <jamrial@gmail.com>

check_cpp_condition was not being called on some targets, which made schannel
remain enabled even when it was not available
Signed-off-by: James Almer <jamrial@gmail.com>

* commit '83fef16b':
  configure: Add check_cpp_condition() helper function to simplify some expressions
Merged-by: James Almer <jamrial@gmail.com>

* commit 'a5e011c8':
  configure: Add check_cmd() helper function to simplify some expressions
Merged-by: James Almer <jamrial@gmail.com>

the test in none mode can be let (they don't use libsnappy)

Reviwed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

Re add AVOptions flags, using the new one meant for bsfs.
This partially reverts commit f706cdda.
Signed-off-by: James Almer <jamrial@gmail.com>

support dump bit stream filter options
Signed-off-by: Jun Zhao <mypopydev@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

There's no need to allocate a new packet for it.
Signed-off-by: James Almer <jamrial@gmail.com>

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

Adds the level prefix to all log messages, except those with level <=
AV_LOG_QUIET as they seem to be used for flushing the log buffer.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com>

Signed-off-by: James Almer <jamrial@gmail.com>

Support dump bit stream filter option in ffmpeg -h full and
ffmpeg -h bsf=FooBar.
Signed-off-by: Jun Zhao <mypopydev@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

enable dump bit stream filter and update opt fate test ref.
Signed-off-by: Jun Zhao <mypopydev@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

add AV_OPT_FLAG_BSF_PARAM for bit stream filter options.
Signed-off-by: Jun Zhao <mypopydev@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Simplifies code.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

* commit '49804dc2':
  configure: Use test_ prefix for helper functions that do not set variables
Merged-by: James Almer <jamrial@gmail.com>

* commit '8c893aa3':
  configure: Drop unnecessary variables, shifts, and quotes in helper functions
Merged-by: James Almer <jamrial@gmail.com>

* commit '12131489':
  configure: Fix logic of AMF external library check

This commit is a noop. AMF is meant to be autodetected.
Merged-by: James Almer <jamrial@gmail.com>

* commit '0711d142':
  examples: Use new API for transcoding example
Merged-by: James Almer <jamrial@gmail.com>

* commit 'aeaa108b':
  hls: Add a discontinuity marker on recover

This commit is a noop, see
572a8292
6b95da9aMerged-by: James Almer <jamrial@gmail.com>

Signed-off-by: Steven Liu <lingjiujianke@gmail.com>