Also fix usage string: the algorithm is not optional.

The helpers use local memory to compute the final hash,
making AV_HASH_MAX_SIZE safe to use.

Should fix FFmpeg Coverity Scan issue #732177
Signed-off-by: Reynaldo H. Verdejo Pinochet <r.verdejo@sisa.samsung.com>

Should fix FFmpeg Coverity Scan issue #732176
Signed-off-by: Reynaldo H. Verdejo Pinochet <r.verdejo@sisa.samsung.com>

Should fix Coverity Scan issue #732178
Signed-off-by: Reynaldo H. Verdejo Pinochet <r.verdejo@sisa.samsung.com>

Should fix FFmpeg Coverity Scan issue #732181
Signed-off-by: Reynaldo H. Verdejo Pinochet <r.verdejo@sisa.samsung.com>

Should fix FFmpeg Coverity Scan issues #732180 & #732182
Signed-off-by: Reynaldo H. Verdejo Pinochet <r.verdejo@sisa.samsung.com>

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

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

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

* commit 'a61c2115':
  configure: rework dxva in avconv handling

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

* commit '35177ba7':
  avconv: add support for DXVA2 decoding

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

* commit 'b2b4afe8':
  hwaccel: fix dxva2 & vaapi loop filter parameters

See: 0ad8f73fMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ed4b7571':
  dxva2_h264: add a workaround for old Intel GPUs

Conflicts:
	doc/APIchanges
	libavcodec/version.h

See: 8b2a130dMerged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '2fcef90b':
  dxva2_h264: set the correct ref frame index in the long slice struct

Conflicts:
	libavcodec/dxva2_h264.c

See: 276839b8Merged-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket3477
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Move the dxva check after the dependencies have been detected, make sure
the ole32 library exists.

Fixes build on non-Windows.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Prevents shifts with undefined behavior

Fixes CID1206634
Fixes CID1206635
Fixed CID1206636

Reviewed-by: smarter
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Old Intel GPUs expect the reference frame index to the actual surface,
instead of the index into RefFrameList as specified by the spec.

This workaround should be set when using one of the "ClearVideo" decoder
devices.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Add new -march values for Intel CPUs (introduced with GCC 4.9.x), add support
for the missing AMD btver* CPUs, and improve SunCC flags accordingly.
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The latest H.264 DXVA specification states that the index in this
structure should refer to a valid entry in the RefFrameList of the picture
parameter structure, and not to the actual surface index.

Fixes H.264 DXVA2 decoding on recent Intel GPUs (tested on Sandy and Ivy)
Signed-off-by: Anton Khirnov <anton@khirnov.net>

This permits the average fps to be set in more cases
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avformat/utils: Ensure that average fps is probed if requested by the user even if tb_unreliable() is 0
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '1eb57e1d':
  lavc: eliminate tb_unreliable()

Conflicts:
	libavformat/utils.c

tb_unreliable() is used in several other parts of libavformat and thus isnt removed
The remaining change is a removial of a call to tb_unreliable() which would cause
a practically unconditional delay of about 1 second in startup for live streams.
I will implement what the commit message claims the change should do in the next
commit

This is thus, not merged
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

This improves the used timebases when gif is the source
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

If framerate estimation is enabled, it makes sense to always apply it,
instead of limiting it to a few specific cases.

Fixes CID1194435
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID1047236
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Found-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Found-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes CID1087088
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>