vf_hqdn3d: x86: Add proper arch optimization initialization
ffplay: dynamically allocate audio buffer

We simply remove the fixed length VideoState->audio_buf2 and use
the previously unused VideoState->audio_buf1.

Fixes ticket #2191.

Signed-off-by: Marton Balint <cus@passwd.hu>
ffplay: fix order of setting show_mode

Without the fix the refresh event may have got called with unset show mode.

Fixes ticket #2174.

Signed-off-by: Marton Balint <cus@passwd.hu>
ffplay: remember last window dimensions

After this change the dimensions of single image videos will be remembered when
coming back from full screen. The issue was mentioned in ticket #2174.

Signed-off-by: Marton Balint <cus@passwd.hu>
ffplay: move up pause functions

No change in functionality.

Signed-off-by: Marton Balint <cus@passwd.hu>
ffplay: step to next frame if paused when seeking

Signed-off-by: Marton Balint <cus@passwd.hu>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  vf_hqdn3d: x86: Add proper arch optimization initialization

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/x86/vf_hqdn3d_init: fix author attribution & project name

Reference: 7a1944b907179212e7073b821fdc60e27d536e4a

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/vf_hqdn3d.h: restore author attribution, history and project name

See git blame of pre split avfilter/vf_hqdn3d.c

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavd/alsa: simplify reordering functions definition.
ffplay: extend doxy for audio_decode_frame()
lavfi/crop: fix help message for the keep_aspect option
doc/indevs: add missing final dot in v4l2 option value description

Fix inconsistency.
Merge remote-tracking branch 'cus/stable'

* cus/stable:
  ffplay: step to next frame if paused when seeking
  ffplay: move up pause functions
  ffplay: remember last window dimensions
  ffplay: fix order of setting show_mode
  ffplay: dynamically allocate audio buffer

Merged-by: Michael Niedermayer <michaelni@gmx.at>