This patch lets e.g. dsputil_init chose dsp functions with respect to
the bit depth to decode. The naming scheme of bit depth dependent
functions is <base name>_<bit depth>[_<prefix>] (i.e. the old
clear_blocks_c is now named clear_blocks_8_c).

Note: Some of the functions for high bit depth is not dependent on the
bit depth, but only on the pixel size. This leaves some room for
optimizing binary size.

Preparatory patch for high bit depth h264 decoding support.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Was missed in 3efbe137.

Shaves at least 3KB off code size on x86, should improve cache utilization.
This would probably be useful to do for other decoders/encoders as well.

A break statement was supposed to break out of two loops, but only broke out of one.
Didn't affect output, just could have been marginally slower.

This one didn't actually need to be initialized.
(cherry picked from commit 891b1f15)

(cherry picked from commit bcf4568f)

(cherry picked from commit 7634771e)

This one didn't actually need to be initialized.

Done to keep ABI compatible. Otherwise this is just silly

It is pretty hopeless that other considerable projects will adopt
libavutil alone in other projects. Projects that need small footprint
are better off with more specialized libraries such as gnulib or rather
just copy the necessary parts that they need. With this in mind, nobody
is helped by having libavutil and libavcore split. In order to ease
maintenance inside and around FFmpeg and to reduce confusion where to
put common code, avcore's functionality is merged (back) to avutil.
Signed-off-by: Reinhard Tartler <siretart@tauware.de>

Approximately 5% faster on Cortex-A8.
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit a7878c9f)

Approximately 5% faster on Cortex-A8.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Merge find_near_mvs and mv bitstream decoding: don't do prediction steps
until absolutely necessary.
(cherry picked from commit f3d09d44)

Merge find_near_mvs and mv bitstream decoding: don't do prediction steps
until absolutely necessary.

Currently uses AV_RL32 instead of AV_RL32A, as the latter doesn't exist yet.
(cherry picked from commit 62457f90)

Currently uses AV_RL32 instead of AV_RL32A, as the latter doesn't exist yet.

(cherry picked from commit 8a2c99b4)

Convert hev_thresh logic to a LUT, simplify mbedge_lim calculation.
(cherry picked from commit 79dec154)

(cherry picked from commit a1b227bb)

(cherry picked from commit dd18c9a0)

Convert hev_thresh logic to a LUT, simplify mbedge_lim calculation.

Adds some duplicated code, but avoids duplicate edge checks and similar.
~0.5% faster overall on Parkjoy test sample.
(cherry picked from commit 64233e70)

Adds some duplicated code, but avoids duplicate edge checks and similar.
~0.5% faster overall on Parkjoy test sample.

Merge an if and a switch.
(cherry picked from commit 73be29b0)

Merge an if and a switch.

(cherry picked from commit 2e279598)

Replace * (uint32_t *) buf accesses with AV_WN32A/AV_COPY32.
(cherry picked from commit 9d4bdcb7)

Replace * (uint32_t *) buf accesses with AV_WN32A/AV_COPY32.

None of these symbols should be accessed directly, so declare them as
hidden.
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit d36beb3f)

None of these symbols should be accessed directly, so declare them as
hidden.
Signed-off-by: Mans Rullgard <mans@mansr.com>