Fixes handling of lower case pcmu

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

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

This is required for the future addition of VoxWare MetaSound decoder, for its
functions are mostly the same but bitstream reader is completely different
and bitstream format is slightly different too.

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

The common case of the pointer having increased by one packet (which results
in no change to the modulus) can be detected with a 64-bit subtraction,
which is far cheaper than a division on many platforms.

           Before          After
           Mean   StdDev   Mean   StdDev  Change
Divisions   248.3  8.8      51.5   7.4    +381.7%
Overall    2773.2 25.6     2372.5 43.1     +16.9%

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

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

As for intra-refresh it is just a commodity.

It is not possible to have a plugin[] array with 5 or more elements.

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

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

Simplifies check and should fix lumi+vari warning

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

When a stream contains a single program, there's no point in doing a
PID -> program lookup. Normally the one and only program isn't disabled,
so no packets should be discarded.

              Before          After
              Mean   StdDev   Mean   StdDev  Change
discard_pid()   73.8  9.4       20.2  1.5    +264.8%
Overall       2300.8 28.0     2253.1 20.6      +2.1%

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

This was being performed to ensure that a complete packet was held in
contiguous memory, prior to parsing the packet. However, the source buffer
is typically large enough that the packet was already contiguous, so it is
beneficial to return the packet by reference in most cases.

         Before          After
         Mean   StdDev   Mean   StdDev  Change
memcpy    720.7  32.7     649.8  25.1   +10.9%
Overall  2372.7  46.1    2291.7  21.8    +3.5%

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

As long as there is enough contiguous data in the avio buffer,
just return a pointer to it instead of copying it to the caller
provided buffer.

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

os_support.h contains more precise workarounds for non-POSIX mkdir().

The bitstream buffers are now private and freed by libavcodec. For
backward compatibility, the hold bitstream buffer pointer is left NULL
(applications were supposed to av_freep() it).

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

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

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

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

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

It limits the duration of the data read from a given input.

Insert (a)trim filters on the corresponding inputs, so the extra frames
are decoded and discarded.

Using -ss 0 to drop frames with negative timestamps is a perfectly valid
use case.

This will allow using the same code when one filter can be inserted both
on input and output.

If any samples are still buffered when request_frame returns EOF, they
won't be returned currently.

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

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

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

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

* qatar/master:
  mxfenc: switch to av_reallocp_array() and check allocation errors

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

* commit 'a10c4ce24bd4a0dd557d5849aa53a0cc74677808':
  aac: Forward errors properly in aac_decode_frame_int

Conflicts:
	libavcodec/aacdec.c

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

* commit '71953ebcf94fe4ef316cdad1f276089205dd1d65':
  aac: Check init_get_bits return value

Conflicts:
	libavcodec/aacdec.c

See: 73abc3a634

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

* commit '51fc88e7467169031b20b9983d80456b893a9fa3':
  avconv: improve some variable names

Conflicts:
	ffmpeg_filter.c

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

* commit '77cc958f60f73963be4281d6e82ef81707e40c26':
  lavfi: add const to the AVFilter parameter of avfilter_graph_create_filter()

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

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

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

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

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

Fixes an invalid free.

Bug-id: 448

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

Incidentally also remove a warning.

Some code paths can call it with invalid length.

CC: libav-stable@libav.org