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Diffstat (limited to 'drivers/opus/celt/float_cast.h')
| -rw-r--r-- | drivers/opus/celt/float_cast.h | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/drivers/opus/celt/float_cast.h b/drivers/opus/celt/float_cast.h deleted file mode 100644 index 36a1bfe671..0000000000 --- a/drivers/opus/celt/float_cast.h +++ /dev/null @@ -1,140 +0,0 @@ -/* Copyright (C) 2001 Erik de Castro Lopo <erikd AT mega-nerd DOT com> */ -/* - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - - - Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - - Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER - OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -/* Version 1.1 */ - -#ifndef FLOAT_CAST_H -#define FLOAT_CAST_H - - -#include "opus/celt/arch.h" - -/*============================================================================ -** On Intel Pentium processors (especially PIII and probably P4), converting -** from float to int is very slow. To meet the C specs, the code produced by -** most C compilers targeting Pentium needs to change the FPU rounding mode -** before the float to int conversion is performed. -** -** Changing the FPU rounding mode causes the FPU pipeline to be flushed. It -** is this flushing of the pipeline which is so slow. -** -** Fortunately the ISO C99 specifications define the functions lrint, lrintf, -** llrint and llrintf which fix this problem as a side effect. -** -** On Unix-like systems, the configure process should have detected the -** presence of these functions. If they weren't found we have to replace them -** here with a standard C cast. -*/ - -/* -** The C99 prototypes for lrint and lrintf are as follows: -** -** long int lrintf (float x) ; -** long int lrint (double x) ; -*/ - -/* The presence of the required functions are detected during the configure -** process and the values HAVE_LRINT and HAVE_LRINTF are set accordingly in -** the config.h file. -*/ - -#if (HAVE_LRINTF) - -/* These defines enable functionality introduced with the 1999 ISO C -** standard. They must be defined before the inclusion of math.h to -** engage them. If optimisation is enabled, these functions will be -** inlined. With optimisation switched off, you have to link in the -** maths library using -lm. -*/ - -#define _ISOC9X_SOURCE 1 -#define _ISOC99_SOURCE 1 - -#define __USE_ISOC9X 1 -#define __USE_ISOC99 1 - -#include <math.h> -#define float2int(x) lrintf(x) - -#elif (defined(HAVE_LRINT)) - -#define _ISOC9X_SOURCE 1 -#define _ISOC99_SOURCE 1 - -#define __USE_ISOC9X 1 -#define __USE_ISOC99 1 - -#include <math.h> -#define float2int(x) lrint(x) - -#elif (defined(_MSC_VER) && _MSC_VER >= 1400) && defined (_M_X64) - #include <xmmintrin.h> - - __inline long int float2int(float value) - { - return _mm_cvtss_si32(_mm_load_ss(&value)); - } -#elif (defined(_MSC_VER) && _MSC_VER >= 1400) && defined (_M_IX86) - #include <math.h> - - /* Win32 doesn't seem to have these functions. - ** Therefore implement OPUS_INLINE versions of these functions here. - */ - - __inline long int - float2int (float flt) - { int intgr; - - _asm - { fld flt - fistp intgr - } ; - - return intgr ; - } - -#else - -#if (defined(__GNUC__) && defined(__STDC__) && __STDC__ && __STDC_VERSION__ >= 199901L) - /* supported by gcc in C99 mode, but not by all other compilers */ - #warning "Don't have the functions lrint() and lrintf ()." - #warning "Replacing these functions with a standard C cast." -#endif /* __STDC_VERSION__ >= 199901L */ - #include <math.h> - #define float2int(flt) ((int)(floor(.5+flt))) -#endif - -#ifndef DISABLE_FLOAT_API -static OPUS_INLINE opus_int16 FLOAT2INT16(float x) -{ - x = x*CELT_SIG_SCALE; - x = MAX32(x, -32768); - x = MIN32(x, 32767); - return (opus_int16)float2int(x); -} -#endif /* DISABLE_FLOAT_API */ - -#endif /* FLOAT_CAST_H */ |