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Use mathops 

Originally committed as revision 6323 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Barbato 2006-09-22 15:57:23 +00:00
parent 22565f5d7e
commit 004390a639
1 changed files with 6 additions and 55 deletions
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61
libavcodec/mpegaudiodec.c
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@ -41,39 +41,10 @@
#include "mpegaudio.h"
#include "mathops.h"
#define FRAC_ONE (1 << FRAC_BITS)
#ifdef ARCH_X86
# define MULL(ra, rb) \
({ int rt, dummy; asm (\
"imull %3 \n\t"\
"shrdl %4, %%edx, %%eax \n\t"\
: "=a"(rt), "=d"(dummy)\
: "a" (ra), "rm" (rb), "i"(FRAC_BITS));\
rt; })
# define MUL64(ra, rb) \
({ int64_t rt; asm ("imull %2\n\t" : "=A"(rt) : "a" (ra), "g" (rb)); rt; })
# define MULH(ra, rb) \
({ int rt, dummy; asm ("imull %3\n\t" : "=d"(rt), "=a"(dummy): "a" (ra), "rm" (rb)); rt; })
#elif defined(ARCH_ARMV4L)
# define MULL(a, b) \
({ int lo, hi;\
asm("smull %0, %1, %2, %3 \n\t"\
"mov %0, %0, lsr %4\n\t"\
"add %1, %0, %1, lsl %5\n\t"\
: "=&r"(lo), "=&r"(hi)\
: "r"(b), "r"(a), "i"(FRAC_BITS), "i"(32-FRAC_BITS));\
hi; })
# define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
# define MULH(a, b) ({ int lo, hi; asm ("smull %0, %1, %2, %3" : "=&r"(lo), "=&r"(hi) : "r"(b), "r"(a)); hi; })
#else
# define MULL(a,b) (((int64_t)(a) * (int64_t)(b)) >> FRAC_BITS)
# define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
//#define MULH(a,b) (((int64_t)(a) * (int64_t)(b))>>32) //gcc 3.4 creates an incredibly bloated mess out of this
static always_inline int MULH(int a, int b){
return ((int64_t)(a) * (int64_t)(b))>>32;
}
#endif
#define FIX(a) ((int)((a) * FRAC_ONE))
/* WARNING: only correct for posititive numbers */
#define FIXR(a) ((int)((a) * FRAC_ONE + 0.5))
@ -781,32 +752,12 @@ static inline int round_sample(int *sum)
return sum1;
}
# if defined(ARCH_POWERPC_405)
/* signed 16x16 -> 32 multiply add accumulate */
# define MACS(rt, ra, rb) \
asm ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
/* signed 16x16 -> 32 multiply add accumulate */
#define MACS(rt, ra, rb) MAC16(rt, ra, rb)
/* signed 16x16 -> 32 multiply */
# define MULS(ra, rb) \
({ int __rt; asm ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb)); __rt; })
/* signed 16x16 -> 32 multiply */
#define MULS(ra, rb) MUL16(ra, rb)
# elif defined(HAVE_ARMV5TE)
/* signed 16x16 -> 32 multiply add accumulate */
# define MACS(rt, ra, rb) \
asm ("smlabb %0, %2, %3, %0" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
/* signed 16x16 -> 32 multiply */
# define MULS(ra, rb) \
({ int __rt; asm ("smulbb %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb)); __rt; })
# else
/* signed 16x16 -> 32 multiply add accumulate */
# define MACS(rt, ra, rb) rt += (ra) * (rb)
/* signed 16x16 -> 32 multiply */
# define MULS(ra, rb) ((ra) * (rb))
# endif
#else
static inline int round_sample(int64_t *sum)