Speexdsp component is set in fixed-point not agree with the top level API

[Kaipingli88]

The speexdsp component supports both floating-point and fixed-point implementations. It is set to fixed-point but the top level API is for floating-point (f32) implementation with fixed-point audio inputs. In the speexdsp component, change to floating-point by modify config.h file as shown below. It compiles but it does not run properly.
/* Compile as fixed-point */
//#define FIXED_POINT 1

/* Compile as floating-point */
#define FLOATING_POINT /**//

[llefaucheur]

You are true. I will revert it to float32.
I will check if float16 is feasible, since the resolution/accuracy it is very appropriate for this family of algorithms.
Let's anticipate the acceptance criterion, much must not based on bit-exactness.

[petertorelli]

I can compile FIXED_POINT and run, but FLOATING_POINT segfaults. Working on this now.

[petertorelli]

When using FLOATING_POINT here is the status of my testing

• USE_SMALLFT - Ok
• USE_INTEL_MKL - I don't have the MKL, couldn't test
• USE_INTEL_IPP - Ditto but for IPP
• USE_GPL_FFTW3 - Ditto for FFTW3
• USE_KISS_FFT - Broken, cannot be used with FLOATING_POINT or FIXED_POINT defined, but one must be defined.

Not sure why I'm no longer getting a segmentation fault that I saw yesterday.

See PR #8. Since I'm not using HAVE_CONFIG_H, all SpeeX config occurs in cmake (for now).