Based on a patch by Michael Niedermayer.
Signed-off-by: Martin Storsjö <martin@martin.st>

There are cases where strncpy() does exactly what is required.
A blanket ban forces more convoluted solutions to be used in those
cases and has been a cause of bugs.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Test inplace ECB, normal CBC and inplace CBC encryption/decryption.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

Some old assemblers still in use do not support named tags.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This might not be needed at the moment, but it's good practice to
pass it to all chained AVFormatContexts, if it would happen to be
used there at a later point.
Signed-off-by: Martin Storsjö <martin@martin.st>

This function causes several versions of armcc to miscompile code,
and the performance impact is small.
Signed-off-by: Mans Rullgard <mans@mansr.com>

All our ARM asm preserves alignment so setting this attribute
in a common location is simpler.  This removes numerous warnings
when linking with armcc.
Signed-off-by: Mans Rullgard <mans@mansr.com>

LDR with register offset and PC as base register is not available in
the Thumb instruction set so the addition must be done separately.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Make it consistent with the other function-like macros.

It should be vfw32.lib with MSVC.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Split away option settings, sanity checks and general setup.

Mostly cosmetic changes adding some intermediate to shorten the lines.

This takes into account planar vs. packed when comparing to find the closest
sample format match.

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