Options are freed from the generic code now, there is no need to call
av_opt_free() from the filter.

It now allows an arbitrary number of inputs, not just two.

Otherwise some code might mistakenly think it is allowed to unref those
buffers, which would lead to double unref.

It is a part of the sample that got broken by recent indeo3 changes.

They are the same in this case, except put_pixels also has blocksizes
smaller than 8.

CC:libav-stable@libav.org

Broken bitstreams could report a larger than specified number of
channels and cause outbound writes.

CC:libav-stable@libav.org

The return value provides no useful information and removing the printing
avoids the following warning:
libavcodec/h264_refs.c:788:15: warning: 'i' may be used uninitialized in this function [-Wuninitialized]

Set the data field in the flush_pkt to the pointer to the actual packet.
The field needs to contain a valid unique pointer, no read nor writes
are ever made to it.

CC:libav-stable@libav.org

The function requires increasing the fuzz factor for the ac3/eac3 encode
tests and even so makes fate fail. It only provides a slight encoding
speedup for legacy CPUs that do not support SS2. Thus its benefit is not
worth the trouble it creates and fixing it would be a waste of time.

This makes it less confusing when this template is shared both by
dsputil and by hpeldsp.
Signed-off-by: Martin Storsjö <martin@martin.st>

Most formats do not support negative timestamps, shift them to avoid
unexpected behaviour and a number of bad crashes.

CC:libav-stable@libav.org
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The sample is already included in the FATE suite, but is not tested
because cropping wasn't fully supported before.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

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

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

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

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

Intra codecs do not need an update_thread_context() function and never
call ff_thread_finish_setup(). They rely on ff_thread_get_buffer()
calling it. So call it even if the get_buffer2 function pointer is
avcodec_default_get_buffer2 and it has not been called before.

Based on the 2007 GSoC project from Kamil Nowosad <k.nowosad@students.mimuw.edu.pl>
Updated to current programming standards, style and many more small
fixes by Diego Biurrun <diego@biurrun.de>.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

The code represents a considerable maintenance burden and it is not
clear that it gives a noticeable benefit to outweigh this after 10
years of improvements in compiler technology since its creation.

libavformat/mxfenc.c:1861:9: warning: format '%lld' expects argument of type 'long long int', but argument 5 has type 'int64_t' [-Wformat]

Before, this code was labeled as mmxext and enabled both for the
3dnow and the mmxext case.

The current code can fail to return the last frame if it contains
exactly the requested number of samples.

Fixes the join filter test, which previously did not include the last
408 samples in most cases.

CC:libav-stable@libav.org
Signed-off-by: Diego Biurrun <diego@biurrun.de>

Makes the code simpler to follow.
Signed-off-by: Diego Biurrun <diego@biurrun.de>