root authored 12 years ago and Jean-Marc Valin committed 12 years ago

modified the Visual Studio 2010 projects and solution file to include a x64 configuration. modified the output folders such that the architecture is included in the path (so you get Release64, Debug32, etc.) so you can have all build types in one tree.

Gregory Maxwell authored 12 years ago and Jean-Marc Valin committed 12 years ago

On MacOS, stdlib.h ends up including sys/signal.h, generating
warnings about the local variables called 'signal' shadowing
the global symbol signal(3).

This was originally done in 86476906 but it missed some use
of 'signal' in prototypes in headers where it didn't cause
warnings. Later the prototypes were moved around and the
warnings came back.

This also cleans up some cases in where stdlib.h was used
but shouldn't be required.

One in SILK, one in CELT, none of them causing real harm in practice it seems

Actual behaviour was correct on most architectures and breaking that
code would have required a particularly smart compiler.

This changes the saturation test to ensure that it relies on the
unsigned overflow behaviour (which is allowed) rather than the signed
overflow behaviour (which is undefined).

Ralph Giles authored 13 years ago and Jean-Marc Valin committed 12 years ago

Also fixes a minor typo.

We still override the '#if 0' with FIXED_DEBUG, but this
leaves whatever Koen intended here more intact. Suggestion
from Greg Maxwell.

This isn't entirely accurate, since it's also used on integer
math. However, the idea is similar: to add bounds checking.

This code asserts rather than warning, so one must pass
--enable-assertions to configure as well to get any output,
and in that case the first instance is fatal.

Quick testing shows both test_opus_decode and test_opus_encode
trigger the assertions, but running the draft-10 test vectors
does not.

The silk math debug macros include a bounds check on silk_abs.
Because INT_MIN = (-INT_MAX - 1), abs(INT_MIN) can't be
represented as an int. The macro was checking for this value
as 0x8000... without a cast to signed, warning on gcc.

silk/typedef.h already defines minimum values for the int
types, so we correct the warning by using those.

- Draft updates
- Updated code to produce and check test vectors
- Making sure that the test vectors pass at all rates as well as for mono and stereo

Also using the same int->float conversion functions for SILK as for CELT
and changed encoder implementation default to constrained VBR just to
be safe when VBR gets more aggressive.

Koen Vos authored 13 years ago and Jean-Marc Valin committed 13 years ago

Also adds the encoder part of commit ee8adbe7 as well as a few
minor cleanups.

This is not strictly necessary because the only streams that cause these
already sound horrible, but it helps the testing process.

- Safer gain clamping for PLC
- Makes opus_decoder_get_nb_samples() report an error on invalid ToC
- Giving a free license to the text ofthe draft (not just the code)

Koen Vos authored 13 years ago and Jean-Marc Valin committed 13 years ago

Also clamps the gain to avoid forcing a float decoder to emulate the
state rescaling.

Koen Vos authored 13 years ago and Jean-Marc Valin committed 13 years ago

decoder:
- fixed incorrect scaling of filter states for the smallest quantization
  step sizes
- NLSF2A now limits the prediction gain of LPC filters

encoder:
- increased damping of LTP coefficients in LTP analysis
- increased white noise fraction in noise shaping LPC analysis
- introduced maximum total prediction gain.  Used by Burg's method to
  exit early if prediction gain is exceeded.  This improves packet
  loss robustness and numerical robustness in Burg's method
- Prefiltered signal is now in int32 Q10 domain, from int16 Q0
- Increased max number of iterations in CBR gain control loop from 5 to 6
- Removed useless code from LTP scaling control
- Optimization: smarter LPC loop unrolling
- Switched default win32 compile mode to be floating-point

resampler:
- made resampler have constant delay of 0.75 ms; removed delay
  compensation from silk code.
- removed obsolete table entries (~850 Bytes)
- increased downsampling filter order from 16 to 18/24/36 (depending on
  frequency ratio)
- reoptimized filter coefficients

Ralph Giles authored 13 years ago and Jean-Marc Valin committed 13 years ago

C reserves identifiers of the from _[A-Z]+ and we have a number of
those in the code. This patch renames the various function arguments,
MACROS and preprocessor symbols to avoid the reserved form.

It also removes the CHANNELS() macro altogether. This was a
minor optimization for TI DSP to force a mono-only build,
as were the associated local 'const' versions. Since stereo
support is manditory, it wasn't worth keeping.

Thanks to John Ridges for raising the issue, and Jean-Marc Valin
and Greg Maxwell for reviewing the changes.

These fix corner cases discovered during the latest fuzzing tests.