diff options
author | Björn Stenberg <bjorn@haxx.se> | 2008-11-05 13:30:58 +0000 |
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committer | Björn Stenberg <bjorn@haxx.se> | 2008-11-05 13:30:58 +0000 |
commit | 45bd7e024603ba47207e5cc64c61e4116e8f1261 (patch) | |
tree | cf789bb0ce99eb8b153c5445c535ef5c4e4ead62 /apps/codecs/Tremor/misc.h | |
parent | 7ec9ceeaaabb75adaa790b41eba6dec020232fa6 (diff) |
Codec lib directories renamed, except for demac.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19018 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/codecs/Tremor/misc.h')
-rw-r--r-- | apps/codecs/Tremor/misc.h | 291 |
1 files changed, 0 insertions, 291 deletions
diff --git a/apps/codecs/Tremor/misc.h b/apps/codecs/Tremor/misc.h deleted file mode 100644 index 7d8b846381..0000000000 --- a/apps/codecs/Tremor/misc.h +++ /dev/null @@ -1,291 +0,0 @@ -/******************************************************************** - * * - * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * - * * - * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * - * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * - * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * - * * - * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * - * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * - * * - ******************************************************************** - - function: miscellaneous math and prototypes - - ********************************************************************/ - -#include "config-tremor.h" - -#ifndef _V_RANDOM_H_ -#define _V_RANDOM_H_ -#include "ivorbiscodec.h" -#include "os_types.h" - -#include "asm_arm.h" -#include "asm_mcf5249.h" - - -/* Some prototypes that were not defined elsewhere */ -void *_vorbis_block_alloc(vorbis_block *vb,long bytes); -void _vorbis_block_ripcord(vorbis_block *vb); -extern int _ilog(unsigned int v); - -#ifndef _V_WIDE_MATH -#define _V_WIDE_MATH - -#ifndef _LOW_ACCURACY_ -/* 64 bit multiply */ -/* #include <sys/types.h> */ - -#if BYTE_ORDER==LITTLE_ENDIAN -union magic { - struct { - ogg_int32_t lo; - ogg_int32_t hi; - } halves; - ogg_int64_t whole; -}; -#elif BYTE_ORDER==BIG_ENDIAN -union magic { - struct { - ogg_int32_t hi; - ogg_int32_t lo; - } halves; - ogg_int64_t whole; -}; -#endif - -static inline ogg_int32_t MULT32(ogg_int32_t x, ogg_int32_t y) { - union magic magic; - magic.whole = (ogg_int64_t)x * y; - return magic.halves.hi; -} -static inline ogg_int32_t MULT31(ogg_int32_t x, ogg_int32_t y) { - return MULT32(x,y)<<1; -} - -static inline ogg_int32_t MULT31_SHIFT15(ogg_int32_t x, ogg_int32_t y) { - union magic magic; - magic.whole = (ogg_int64_t)x * y; - return ((ogg_uint32_t)(magic.halves.lo)>>15) | ((magic.halves.hi)<<17); -} - -#else -/* 32 bit multiply, more portable but less accurate */ - -/* - * Note: Precision is biased towards the first argument therefore ordering - * is important. Shift values were chosen for the best sound quality after - * many listening tests. - */ - -/* - * For MULT32 and MULT31: The second argument is always a lookup table - * value already preshifted from 31 to 8 bits. We therefore take the - * opportunity to save on text space and use unsigned char for those - * tables in this case. - */ - -static inline ogg_int32_t MULT32(ogg_int32_t x, ogg_int32_t y) { - return (x >> 9) * y; /* y preshifted >>23 */ -} - -static inline ogg_int32_t MULT31(ogg_int32_t x, ogg_int32_t y) { - return (x >> 8) * y; /* y preshifted >>23 */ -} - -static inline ogg_int32_t MULT31_SHIFT15(ogg_int32_t x, ogg_int32_t y) { - return (x >> 6) * y; /* y preshifted >>9 */ -} -#endif - -/* - * This should be used as a memory barrier, forcing all cached values in - * registers to wr writen back to memory. Might or might not be beneficial - * depending on the architecture and compiler. - */ -#define MB() - -/* - * The XPROD functions are meant to optimize the cross products found all - * over the place in mdct.c by forcing memory operation ordering to avoid - * unnecessary register reloads as soon as memory is being written to. - * However this is only beneficial on CPUs with a sane number of general - * purpose registers which exclude the Intel x86. On Intel, better let the - * compiler actually reload registers directly from original memory by using - * macros. - */ - -/* replaced XPROD32 with a macro to avoid memory reference - _x, _y are the results (must be l-values) */ -#define XPROD32(_a, _b, _t, _v, _x, _y) \ - { (_x)=MULT32(_a,_t)+MULT32(_b,_v); \ - (_y)=MULT32(_b,_t)-MULT32(_a,_v); } - - -#ifdef __i386__ - -#define XPROD31(_a, _b, _t, _v, _x, _y) \ - { *(_x)=MULT31(_a,_t)+MULT31(_b,_v); \ - *(_y)=MULT31(_b,_t)-MULT31(_a,_v); } -#define XNPROD31(_a, _b, _t, _v, _x, _y) \ - { *(_x)=MULT31(_a,_t)-MULT31(_b,_v); \ - *(_y)=MULT31(_b,_t)+MULT31(_a,_v); } - -#else - -static inline void XPROD31(ogg_int32_t a, ogg_int32_t b, - ogg_int32_t t, ogg_int32_t v, - ogg_int32_t *x, ogg_int32_t *y) -{ - *x = MULT31(a, t) + MULT31(b, v); - *y = MULT31(b, t) - MULT31(a, v); -} - -static inline void XNPROD31(ogg_int32_t a, ogg_int32_t b, - ogg_int32_t t, ogg_int32_t v, - ogg_int32_t *x, ogg_int32_t *y) -{ - *x = MULT31(a, t) - MULT31(b, v); - *y = MULT31(b, t) + MULT31(a, v); -} -#endif - -#ifndef _V_VECT_OPS -#define _V_VECT_OPS - -static inline -void vect_add(ogg_int32_t *x, ogg_int32_t *y, int n) -{ - while (n>0) { - *x++ += *y++; - n--; - } -} - -static inline -void vect_copy(ogg_int32_t *x, ogg_int32_t *y, int n) -{ - while (n>0) { - *x++ = *y++; - n--; - } -} - -static inline -void vect_mult_fw(ogg_int32_t *data, LOOKUP_T *window, int n) -{ - while(n>0) { - *data = MULT31(*data, *window); - data++; - window++; - n--; - } -} - -static inline -void vect_mult_bw(ogg_int32_t *data, LOOKUP_T *window, int n) -{ - while(n>0) { - *data = MULT31(*data, *window); - data++; - window--; - n--; - } -} -#endif - -#endif - -#ifndef _V_CLIP_MATH -#define _V_CLIP_MATH - -static inline ogg_int32_t CLIP_TO_15(ogg_int32_t x) { - int ret=x; - ret-= ((x<=32767)-1)&(x-32767); - ret-= ((x>=-32768)-1)&(x+32768); - return(ret); -} - -#endif - -static inline ogg_int32_t VFLOAT_MULT(ogg_int32_t a,ogg_int32_t ap, - ogg_int32_t b,ogg_int32_t bp, - ogg_int32_t *p){ - if(a && b){ -#ifndef _LOW_ACCURACY_ - *p=ap+bp+32; - return MULT32(a,b); -#else - *p=ap+bp+31; - return (a>>15)*(b>>16); -#endif - }else - return 0; -} - -static inline ogg_int32_t VFLOAT_MULTI(ogg_int32_t a,ogg_int32_t ap, - ogg_int32_t i, - ogg_int32_t *p){ - - int ip=_ilog(abs(i))-31; - return VFLOAT_MULT(a,ap,i<<-ip,ip,p); -} - -static inline ogg_int32_t VFLOAT_ADD(ogg_int32_t a,ogg_int32_t ap, - ogg_int32_t b,ogg_int32_t bp, - ogg_int32_t *p){ - - if(!a){ - *p=bp; - return b; - }else if(!b){ - *p=ap; - return a; - } - - /* yes, this can leak a bit. */ - if(ap>bp){ - int shift=ap-bp+1; - *p=ap+1; - a>>=1; - if(shift<32){ - b=(b+(1<<(shift-1)))>>shift; - }else{ - b=0; - } - }else{ - int shift=bp-ap+1; - *p=bp+1; - b>>=1; - if(shift<32){ - a=(a+(1<<(shift-1)))>>shift; - }else{ - a=0; - } - } - - a+=b; - if((a&0xc0000000)==0xc0000000 || - (a&0xc0000000)==0){ - a<<=1; - (*p)--; - } - return(a); -} - -#ifdef __GNUC__ -#if __GNUC__ >= 3 -#define EXPECT(a, b) __builtin_expect((a), (b)) -#else -#define EXPECT(a, b) (a) -#endif -#else -#define EXPECT(a, b) (a) -#endif - -#endif - - - |