hevc: calculate the dbf strength in hls_pcm_sample() only if dbf is enabled
hevc_filter: drop redundant checks

ff_hevc_deblocking_boundary_strengths() is never called if the
deblocking filter is disabled for the slice.
hevc_filter: drop more redundant checks

The if() around those loops ensures this condition is always false.
hevc: deobfuscate slice/tile boundary handling for DBF

Use named constants instead of magic numbers, avoid using variables with
inverse meaning from what their name implies.
hevc_filter: move some conditions out of loops
hevc_refs: drop the handling of negative coordinates in ff_hevc_get_ref_list()

It makes no sense and cannot happen in any place from which this
function is called.
hevc_filter: avoid excessive calls to ff_hevc_get_ref_list()

1) each of the loops run within a single CTB, so the relevant reference
list is constant
2) when that CTB is, or lies on the same slice as, the current one, we
can use a simple access instead of a relatively expensive call to
ff_hevc_get_ref_list()
Postpone API-incompatible changes until the next bump.
Bump major versions of all libraries.
Remove obsolete FF_API_AVFRAME_COLORSPACE cruft.
Remove obsolete FF_API_PROBE_MIME cruft.
Remove obsolete FF_API_REFERENCE_DTS cruft.
lavc: remove obsolete and disabled avpriv functions
mpeg: Suppress a compiler warning on callback type
avresample: Introduce AVFrame-based API
tiff: Improve grayscale support

Only use PAL8 if palette is present, else use GRAY8 for pixfmt.

Instead of simulating a grayscale palette, use real grayscale pixels, if no
palette is actually defined.

Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
configure: Add probe identification of MS armasm

Signed-off-by: Martin Storsjö <martin@martin.st>
configure: Enable gas-preprocessor on all OSes but only if available

Signed-off-by: Martin Storsjö <martin@martin.st>
configure: Suggest upgrading gas-preprocessor instead of just installing

Older versions don't support all the features we test for now.

Signed-off-by: Martin Storsjö <martin@martin.st>
Prepare for 11_alpha2 Release