This allows reordering, duplication, and silencing of input channels.

Simplifies header dependencies by not including all other internal headers
in internal.h.

If a bug exists on the tracker, its ID should always be included
in fix messages.

Also, any relevant bug fixes should be CC'd to libav-stable, so
we can actually track what needs to be backported, instead of
just randomly combing the git history and old CVEs.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

It's obviously undesireable to blindly allocate memory based on
a damaged 'size' value, for example.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

It's pretty much the best tool for the job, and it's what we
all use now anyway.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

We obviously prefer git-send-email(1), and the disjointed nature
of the two statements was misleading.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

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

Plug an annoying memory leak on broken files.

Snow is a toy codec with no real-world use and horrible code.

255 to 174 cycles on Arrandale / Win64. Unrolling yields no gain.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

698 to 174 cycles on Arrandale. Unrolling is a 6 cycles gain.
Signed-off-by: Diego Biurrun <diego@biurrun.de>