Fixes an infinite loop on flush when avresample_get_delay() still
reports some samples but avresample_convert() doesn't return any data.

It calculates the sum of power of two series, which can be done in one step.

Suggested by Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

That division can be replaced with a comparison:
((c->value - c->low) << 1) + 1 >= range

By expanding 'range' definition and simplifying this inequation we obtain
the final expression.

Suggested by Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

Reported by Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

Prevents dangling pointers and makes access after free more obvious.
Setting AVFrame.qscale_table to NULL is required for successfully
allocating a previously freed Picture with ff_alloc_picture().

The default ones work, but outputs the preprocessed file on stdout
(into config.log).
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

The init functions check for CPU capabilities on their own already.

This disables the following warnings:
C4100: unreferenced formal parameter
 (1035 occurrances)
C4214: nonstandard extension used : bit field types other than int
 (609 occurances)
C4996: 'avpriv_snprintf': This function or variable may be unsafe.
       Consider using _snprintf_s instead. To disable deprecation,
       use _CRT_SECURE_NO_WARNINGS. See online help for details.
 (351 occurrances)
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

A second expansion forces the preprocessor to tokenize properly.
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Using ranlib is not required but prevents using the libraries with
msvc.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Martin Storsjö <martin@martin.st>

The ParserContext class doesn't have an AVClass, required for
using it as a logging class.
Signed-off-by: Martin Storsjö <martin@martin.st>

It is possible in various error paths as well as gap handling
that this has already been allocated. It is not clear why that
would be a problem with the current code, thus disable the
assert to avoid a common assert failure when asserts are enabled.
Signed-off-by: Martin Storsjö <martin@martin.st>

Also mention this change in APIchanges.
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

This fixes assert failures when running in debug mode.
Signed-off-by: Martin Storsjö <martin@martin.st>

This assert is no longer true since h264 error concealment needs
last_picture_ptr to be set.
Signed-off-by: Martin Storsjö <martin@martin.st>

It now just checks uninitialized and unused data.
Signed-off-by: Martin Storsjö <martin@martin.st>

It seems the condition was flipped from what was intended.
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The data in coded_frame isn't allocated using get_buffer, but
is copied from the input frame to the encoder, so we should
not try to free it ourselves.

This fixes an assert failure when running in debug mode.
Signed-off-by: Martin Storsjö <martin@martin.st>

Previously, the put_bits call writing the value wrote a value
larger than the number of bits specified, failing asserts
in debug mode. There was no actual bitstream writer corruption,
since the overwritten bit already always was set to 1.
Signed-off-by: Martin Storsjö <martin@martin.st>

Previously, the value given to put_bits was 10 bits long for positive
predictors, even though 9 bits were to be written. The extra bit could
in some cases overwrite existing bits in the bitstream writer cache.

This fixes a failed assert in put_bits.h, when running a version
built with -DDEBUG.

The fate test result gets slightly improved, thanks to getting rid
of the overwritten bits in the bitstream writer cache.
Signed-off-by: Martin Storsjö <martin@martin.st>

No meaningful generated code differences using gcc -O3.
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>