Use it in av_dump_format() instead of a huge switch case.

Allows emulation to work when dst is equal to src2 as long as the
instruction is commutative, e.g. `addps m0, m1, m0`.

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

The yasm/nasm preprocessor only checks the first token, which means that
parameters such as `dword [rax]` are treated as identifiers, which is
generally not what we want.

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

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

Those instructions are not commutative since they only change the first
element in the vector and leave the rest unmodified.

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

BT.709 coefficients were gathered from the first two parts of BT.709
to BT.2020 conversion guide in ARIB STD-B62 (Pt. 1, Chapter 6.2.2).
They were additionally confirmed by manually calculating values.

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

The h264/hevc Annex E colour primaries table says that AVCOL_SPC_SMPTE170M is
similar than AVCOL_SPC_SMPTE240M. These two values are not similar than
AVCOL_SPC_BT470BG.

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

This fixes building on MSVC 2010 and 2012 after d12b5b2f13.

Signed-off-by: Martin Storsjö <martin@martin.st>

This avoids spurious library rebuilds when only the test program
code is changed and simplifies the build system.

Restore alphabetical order in lists, break overly long lines, do some
prettyprinting, add some explanatory section comments, group parts
together that belong together logically.

This includes documentation and other modifications by
Lukasz Marek and Martin Storsjö.

Signed-off-by: Martin Storsjö <martin@martin.st>

Also add const to pointers in static functions within opt.c where
possible/necessary.

Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

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

This function only ever existed in the draft versions of the API.

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

This should allow using more complex allocators than simple malloc
wrappers.

Needed to declare 32-byte long constants

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Some debuggers/profilers use this metadata to determine which function a
given instruction is in; without it they get can confused by local labels
(if you haven't stripped those). On the other hand, some tools are still
confused even with this metadata. e.g. this fixes `gdb`, but not `perf`.

Currently only implemented for ELF.

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

The REP_RET workaround is only needed on old AMD cpus, and the labels clutter
up the symbol table and confuse debugging/profiling tools, so use EQU to
create SHN_ABS symbols instead of creating local labels. Furthermore, skip
the workaround completely in functions that definitely won't run on such cpus.

Note that EQU is just creating a local label when using nasm instead of yasm.
This is probably a bug, but at least it doesn't break anything.

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

cpuflags is never undefined any more, it's set to 0 instead.

Also fix an incorrect comment.

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

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

When allocating stack space with a larger alignment than the known stack
alignment a temporary register is used for storing the stack pointer.
Ensure that this isn't one of the registers used for passing arguments.

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

* Correctly handle FMA instructions with memory operands.
 * Print a warning if FMA instructions are used without the correct cpuflag.
 * Simplify the instantiation code.
 * Clarify documentation.

Only the last operand in FMA3 instructions can be a memory operand. When
converting FMA4 instructions to FMA3 instructions we can utilize the fact
that multiply is a commutative operation and reorder operands if necessary
to ensure that a memory operand is used only as the last operand.

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

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

Makes it possible to use them in arithmetic expressions.

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

The parameters in the docs are currently swapped.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>