Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

This is in preparation for adding support for other colorspaces
and coding types.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

This is in preparation for adding support for other colorspaces
and coding types.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

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

This can be used to avoid a time consuming lookup of the
descriptor

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

Fixes Ticket1506
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

They describe properties that are inherent to a codec (as described by
an AVCodecID) without referring to a specific implementation.

Fixes Ticket1632

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

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

Fixes Ticket1630

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

Fixes crash
Fixes Ticket1628

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

C++ does not allow to mix different enums, so e.g. code comparing
ACodecID with CodecID would fail to compile with gcc.

This very evil hack should fix this problem.

Fixes Ticket1527
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This addition must be done as 64-bit to avoid overflow and for
the subsequent clipping to be meaningful.

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

In 16-bit arithmetic, x * 0xffffc is simply x * -4 with extra overflows,
(and the constant was probably meant to be 0xfffc).  Combined with the
shift, this simplifies to -x >> 1.  Finally, clearing the low two bits
with a 32-bit mask and switching to a 32-bit type allows more efficient
code on 32-bit machines.

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

(x << 2) - x is just an optimisation of 3 * x the compiler is
perfectly capable of doing on its own.

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

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

This function is only ever called through a function pointer,
so marking it inline makes no sense.

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

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

At both places this function is called, mb_[xy] == s->mb_[xy]
making the call together with following code equivalent to
simply assigning zeros.

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

The old code generates a termination packet with the same regions as the
start packet and page_state set to "only what changed"; the result is
that the termination packet is decoded as identical to the start packet.

The new code does as found in some DVB broadcasts: produce a packet with
no regions. This is done by expecting num_rects to be 0 rather than
using a flip-flop. ffmpeg.c is updated accordingly.

About 2x speedup going from 1 to 2 threads.
1.7s to 0.85s on foreman CIF.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

The main benefit of inlining this function is from constant
propagation for the 'field_based' argument.  Instead of inlining
all calls, create two versions of the function for field_based
values of 0 and 1.

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

This file defines a single, huge function, MPV_motion(), which
although being declared inline is not actually inlined by the
compiler (for good reason).  There is thus no sense in defining
this function in a header file, resulting in multiple copies of
it in the final library.

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

This adds a hidden config variable for the mpegvideo.o dependency
and selects from the codecs which require it.

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

Closes #1319.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Closes #1619.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

This macro is only used in two places, both in libavcodec, so this
is a more sensible place for it.

Two small tweaks to the macro are made:

- removing the trailing semicolon
- dropping unnecessary 'volatile' from the x86 asm

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

This puts x86-specific things in the x86/ subdirectory where they
belong.

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

Fixes MP4 files where the first frame is broken.

The a.out object format does not allow aligning sections.
On OS/2 LD aligns sections to 16 bytes.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

It expects maximum value to be 32767 but calculations in scale_vector()
which uses this function can give it ABS(-32768) which leads to wrong
result and thus clipping is needed.

Due to some mistake LPC vector for the first subframe was used for all
subframes instead of their own LPC vectors.

It's a perfectly normal situation, nothing to spam about.

Fixes Ticket1335

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>

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