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aacdec: Use intfloat.h rather than local punning union.

This commit is contained in:
Alex Converse 2011-12-12 10:23:51 -08:00
parent 58c42af722
commit 5cd56e193f
1 changed files with 7 additions and 11 deletions
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18
libavcodec/aacdec.c
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@ -98,6 +98,7 @@
#include "aacsbr.h"
#include "mpeg4audio.h"
#include "aacadtsdec.h"
#include "libavutil/intfloat.h"
#include <assert.h>
#include <errno.h>
@ -108,11 +109,6 @@
# include "arm/aac.h"
#endif
union float754 {
float f;
uint32_t i;
};
static VLC vlc_scalefactors;
static VLC vlc_spectral[11];
@ -1004,7 +1000,7 @@ static inline float *VMUL4(float *dst, const float *v, unsigned idx,
static inline float *VMUL2S(float *dst, const float *v, unsigned idx,
unsigned sign, const float *scale)
{
union float754 s0, s1;
union av_intfloat32 s0, s1;
s0.f = s1.f = *scale;
s0.i ^= sign >> 1 << 31;
@ -1022,8 +1018,8 @@ static inline float *VMUL4S(float *dst, const float *v, unsigned idx,
unsigned sign, const float *scale)
{
unsigned nz = idx >> 12;
union float754 s = { .f = *scale };
union float754 t;
union av_intfloat32 s = { .f = *scale };
union av_intfloat32 t;
t.i = s.i ^ (sign & 1U<<31);
*dst++ = v[idx & 3] * t.f;
@ -1272,7 +1268,7 @@ static int decode_spectrum_and_dequant(AACContext *ac, float coef[1024],
static av_always_inline float flt16_round(float pf)
{
union float754 tmp;
union av_intfloat32 tmp;
tmp.f = pf;
tmp.i = (tmp.i + 0x00008000U) & 0xFFFF0000U;
return tmp.f;
@ -1280,7 +1276,7 @@ static av_always_inline float flt16_round(float pf)
static av_always_inline float flt16_even(float pf)
{
union float754 tmp;
union av_intfloat32 tmp;
tmp.f = pf;
tmp.i = (tmp.i + 0x00007FFFU + (tmp.i & 0x00010000U >> 16)) & 0xFFFF0000U;
return tmp.f;
@ -1288,7 +1284,7 @@ static av_always_inline float flt16_even(float pf)
static av_always_inline float flt16_trunc(float pf)
{
union float754 pun;
union av_intfloat32 pun;
pun.f = pf;
pun.i &= 0xFFFF0000U;
return pun.f;