Ensures the decoder did not set channel count to an insanely high value
during initialization, which could cause large memory usage when it tries to
get a buffer during decoding.

This simplifies cpuflags porting.

It is only used in one place so there is no need for the abstraction.

This is more consistent with the way we handle C #includes and
it simplifies the build system.

This is necessary to allow refactoring some x86util macros with cpuflags.

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

After a flush, don't average the output envelope and energy with
previous iterations.

Also start directly from the target values for the first iteration
at startup.

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

Previously the unit of the variable was Bov, not dBov.

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

This was a leftover from previous iterations of the code, where the
refl coef arrays were statically allocated.

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

I somehow messed up the placement of this one.

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

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This way, SIMD-optimized functions don't have to sign-extend their
stride argument manually to be able to do pointer arithmetic.

Replace INIT_AVX by INIT_XMM avx. Port the whole file to use cpuflag
based function declarations. Remove (now unused) cputype argument in
function declaration macros. Change function prototypes to have mmx2
instead of mmxext as suffix, since that's required by cpuflags.

This isn't too useful as a normal codec, but can be used in
voip style applications. The decoder updates the noise
generator parameters when a packet is given to it for decoding,
but if called with an empty packet, it generates more noise
according to the last parameters.

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

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

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

Indexing across array boundaries is not allowed by C99.

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

Subtracting a (positive) value from the address of an array violates
C99 section 6.5.6:

  If both the pointer operand and the result point to elements of the
  same array object, or one past the last element of the array object,
  the evaluation shall not produce an overflow; otherwise, the
  behavior is undefined.

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

Subtracting a (positive) value from the address of an array violates
C99 section 6.5.6:

  If both the pointer operand and the result point to elements of the
  same array object, or one past the last element of the array object,
  the evaluation shall not produce an overflow; otherwise, the
  behavior is undefined.

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

Fixes CID602232.

The function is used elsewhere and does not belong with the LZO code.

Avoids memleaks with audio when extended_data is nontrivial and the user
doesn't reset the frame.
Shouldn't have any effect for video for now, but might be useful in the
future.

Also fixes 3 compiler warnings about using uninitialized variables.

Since the requirement for output padding has been lifted, we can
use av_memcpy_backptr() here as well.

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

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

The function can return either a parsing error or a memory management
error.

Properly forward mp_decode_layer3 errors, mp_decode_layer1 and
mp_decode_layer2 do not return errors.

Based on a patch by Michael Niedermayer.