This decoder can decode all existing SpeedHQ formats (SHQ0–5, 7, and 9),
including correct decoding of the alpha channel.

1080p is decoded in 142 fps on one core of my i7-4600U (2.1 GHz Haswell),
about evenly split between bitstream reader and IDCT. There is currently
no attempt at slice or frame threading, even though the format trivially
supports both.

NewTek very helpfully provided a full set of SHQ samples, as well as
source code for an SHQ2 encoder (not included) and assistance with
understanding some details of the format.

Also don't include it on files that don't need it.

This reduces differences with libav
Tested-by: Timothy Gu <timothygu99@gmail.com>
Reveiwed-by: Carl Eugen Hoyos <ceffmpeg@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

Based on 7c25ffe0 and 58dd885fSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

Also remove a tab
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This allows untangling the eatqi decoder from the MPEG-1 decoder.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

avcodec/mpeg12: Try to fetch pts/dts from both the packet associated with the picture start code as well as earlier start codes
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This will be needed for the following timestamp fix
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

XvMC has long ago been superseded by newer acceleration APIs, such as
VDPAU, and few downstreams still support it. Furthermore XvMC is not
implemented within the hwaccel framework, but requires its own specific
code in the MPEG-1/2 decoder, which is a maintenance burden.

This reverts commit bf36dc50, reversing
changes made to b7fc2693.

Conflicts:

	libavcodec/h264.c

Keeping support for the old VDPAU API has been requested by our VDPAU maintainer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Also move the declaration to internal.h, and add restrict qualifiers
to the declaration (as in the implementation).
Signed-off-by: Martin Storsjö <martin@martin.st>

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

The total frame size is a combination of the 12 bits in the sequence
header and 2 more bits in the the sequence extension. While the
specification explicitly forbids the dimensions from the sequence header
from being 0 (thus ruling out multiples of 4096), such videos
apparrently exist in the wild so we should attempt to decode them.

Based on a patch by Michael Niedermayer <michaelni@gmx.at>

Fixes Bug 416.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Found-by: wm4
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

was broken by the buffer ref stuff
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Not all hwaccels implement all codecs, so using one single list for
multiple such codecs means some codecs will be represented in the list,
even though they don't actually handle that codec. Copying specific
lists in each codec fixes that.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

Fixes some of the issues with segment.mov

See: 0226 15:16 Joseph Artsimov (2.1K) [FFmpeg-devel] Two problems with MPEG2 decoder
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Previously avctx->hwaccel would have been set to a dummy value,
now an explicit check is necessary instead.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Split out dependency on MpegEncContext.

It does not help as an abstraction and adds dsputil dependencies.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

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

Fixes Ticket254
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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