Before this patch trying to enable only https by issuing

    --disable-protocols --enable-protocol=https --enable-gnutls

does not enable https, and

    --disable-all --enable-protocols

does not enable libavformat and the protocols component.

Now the default-enabled options are set after the explicitly
disabled/enabled options are evaluated.

If an explicitly enabled option cannot be enabled configure
will fail printing an error message.

Based on the original documentation found in mpeg2dec (1995).
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

Updates libkvazaar to pass the exact frame rate to Kvazaar by setting
the numerator and denominator separately instead of a single floating
point number. The exact frame rate is needed for writing timing info to
the bitstream.

Requires Kvazaar version 0.8.1.
Signed-off-by: NArttu Ylä-Outinen <arttu.yla-outinen@tut.fi>
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

In the unlikely situation the user decides to set ticks_per_frame
and timebase to a value large enough to overflow.
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

Use mips{,64}eb to force big endian and mips{,64}el to force little
endian.

The code wrongly assumed that the instructions used are supported
on mips64, while it is supported only on loongson cpus.

For http, this avoids spurious warnings about failed requests (e.g.
HTTP error 416 Requested Range Not Satisfiable), if the last packet
is truncated and the size read is bogus.
Signed-off-by: NMartin Storsjö <martin@martin.st>

When loading a truncated flv file, it would previously try to do a seek to
the end of every packet read. For some input protocols (such as http), such
repeated seek attempts are cripple the reading performance.
Signed-off-by: NMartin Storsjö <martin@martin.st>

The function is used on unaligned buffers (such as those provided
by AVPacket), accessing them as uint16_t causes SIGBUS crashes on
architectures like SPARC.

This fixes ubsan runtime error: load of misaligned address for type
'const uint16_t', which requires 2 byte alignment
Signed-off-by: NAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

Fixes runtime error: null pointer passed as argument 2, which is
declared to never be null
Signed-off-by: NAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

This is used to check if the input buffer is larger enough, so if this
overflows it can cause a false negative leading to a segmentation fault
in bytestream2_get_bufferu.
Signed-off-by: NAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

Signed-off-by: NAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

More don't fit into the integer output.

Also use get_bits_long, since get_bits only supports reading up to 25
bits, while get_bits_long supports the full integer range.
Signed-off-by: NAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

When there is a non-zero decoding delay due to reordering, the first dts
should be lower than the first pts (since the first packet fed to the
decoder does not produce any output).

Use the same scheme used in mpegvideo_enc (which comes from x264
originally) -- wait for first two timestamps and extrapolate linearly to
the past to produce the first dts value.

When B-frames are enabled and the encoder returns success, all currently
pending buffers immediately become valid and can be returned to the
caller. We can only return one packet at a time, so all the other
pending buffers should be transferred to a new 'ready' fifo, from where
they can be returned in subsequent calls (in which the encoder does not
produce any new output). This bug was hidden by the incorrect testing of
the encoder return value (the return value was overwritten before it was
tested).

Otherwise, closing the encoder can crash.

Change 'nvenc_<codec>' to '<codec>_nvenc', which is consistent with
other similar decoders and encoders (QSV, MMAL).

Return proper error codes and print more descriptive error messages.

This test does no encoding, setting the flag was done just to silence
the warning removed in the previous commit.

The AVStream codec context is often not (and should not be) the actual
encoding context, so this warning will be spurious in many cases.

Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

get_bit variant supporting 0-bits reads.
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

Initialize the private class field and give the class a more
appropriate name. Add a class member to the codec context.

Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

This fixes builds with --disable-vfp.

Checking for the armv6 cpu flag is incorrect, since vfpv2 isn't
armv6 specific.
Signed-off-by: NMartin Storsjö <martin@martin.st>

This is disabled on iOS, since iOS uses a slightly different ABI
for vararg parameters.
Signed-off-by: NMartin Storsjö <martin@martin.st>

Use two separate functions, depending on whether VFP/NEON is available.

This is set to require armv5te - it uses blx, which is only available
since armv5t, but we don't have a separate configure item for that.
(It also uses ldrd, which requires armv5te, but this could be avoided
if necessary.)
Signed-off-by: NMartin Storsjö <martin@martin.st>

The previous check only caught sizes from -AV_INPUT_BUFFER_PADDING_SIZE
to -1.

This fixes ubsan runtime error: signed integer overflow: 2147483647 + 32
cannot be represented in type 'int'
Signed-off-by: NAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

Signed-off-by: NAnton Khirnov <anton@khirnov.net>

Both avio_skip and detect_unknown_subobject use int64_t for the size
parameter.

This fixes a segmentation fault due to infinite recursion.
Signed-off-by: NAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: NAlexandra Hájková <alexandra.khirnova@gmail.com>
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

Otherwise invalid values are used unchecked in the next run.
This can cause NULL pointer dereferencing.
Signed-off-by: NAndreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: NAlexandra Hájková <alexandra.khirnova@gmail.com>
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

This makes sure all the frames are returned at the end.
Found-By: NMaxym Dmytrychenko <maxym.dmytrychenko@intel.com>

Same as what is done in 3b6473b4.
Signed-off-by: NAnton Khirnov <anton@khirnov.net>