Place all temporary files within a single, quasi-atomically created
temporary directory rather than relying on unsafe 'mktemp -u'. This
prevents possible race conditions in case two parallel 'mktemp -u' calls
returned the same path. Additionally, it reduces TMPDIR pollution by
keeping all test files in a single subdirectory.

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

Servers seem to be happy to receive the wrapped-around value as long
as they receive a report, otherwise they timeout.

Initially reported and analyzed by Thomas Bernhard.

to avoid rebuffering on the clientside for difficult network conditions.

Signed-off-by: Anton Schubert <ischluff@mailbox.org>
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Peter Große <pegro@friiks.de>
Signed-off-by: Martin Storsjö <martin@martin.st>

Appends Z to timestamp to force ISO8601 datetime parsing as UTC.
Without Z, some browsers (Chrome) interpret the timestamp as
localtime and others (Firefox) interpret it as UTC.

Signed-off-by: Anton Schubert <ischluff@mailbox.org>
Signed-off-by: Martin Storsjö <martin@martin.st>

These are more appropriate warning level equivalents.

Newer versions of OS X use the blocks extension in VDA-related headers.
Some compilers, like current gcc, do not support the blocks extension
and fail to compile code using those headers.

If we only have a target compiler but no host compiler, the $type
variable will be empty once.

(Currently we fail to do a cross build if no host compiler is available
due to using the host compiler for processing option lists though.
But despite that, this comparison in configure needs quotes.)

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

Fixes a number of incompatible pointer type warnings.

libswscale/swscale-test.c:369:20: warning: passing argument 2 of ‘sws_scale’ from incompatible pointer type [-Wincompatible-pointer-types]
libswscale/swscale.h:207:5: note: expected ‘const uint8_t * const* {aka const unsigned char * const*}’ but argument is of type ‘uint8_t ** {aka unsigned char **}’

Signed-off-by: Dave Yeo <dave.r.yeo@gmail.com>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Make sure that NVENC does not misbehave if other cuda usages happen
in the application.

The null demuxer does not have a backing AVIOContext.

Setting an invalid range for it makes the encoder behave inconsistently.

The current condition can trigger in cases where it shouldn't, with
unexpected results.
Make sure that:
- container cropping is really based on the original dimensions from the
  caller
- those dimenions are discarded on size change

The code is still quite hacky and eventually should be deprecated and
removed, with the decision about which cropping is used delegated to the
caller.

Also, add generic code for handling cropping, so the decoders can export
just the cropping size and not bother with the rest.

Extend the width/height doxy to clarify that it should store coded
values.

Introducing enforced sync points in arbitrary places is bad for
performance. Since the vast majority of receiving code (QSV VPP or
encoders, retrieving frames through hwcontext) will do the syncing, this
change should not be visible to most callers. But bumping micro just in
case.

This is also consistent with what VAAPI hwaccel does.

We can pick the correct slice index directly from the ID3D11VideoDecoderOutputView
casted from data[3].

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

No need to loop through the known surfaces, we'll use the requested surface
anyway.

The loop is only done for DXVA2.

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

Before this change, it was possible to overflow pic_order_cnt_lsb and
generate a stream with invalid POC numbering.  This makes sure that
the field is large enough that a single IDR B* P sequence uses fewer
than half the available POC lsb values.

This change makes the configured GOP size be respected exactly -
previously the value could be exceeded slightly due to flaws in the
frame type selection logic.