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mips: optimization for float aac decoder (sbr module)

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Signed-off-by: Mirjana Vulin <mvulin@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Mirjana Vulin 2013-02-21 14:46:52 +01:00 • committed by Michael Niedermayer
parent 67b3fcf655
commit 8d2eb5fe58
11 changed files with 2151 additions and 9 deletions
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40
libavutil/mips/float_dsp_mips.c
View file

@ -331,6 +331,45 @@ static void butterflies_float_mips(float *av_restrict v1, float *av_restrict v2,
: "memory"
);
}
static void vector_fmul_reverse_mips(float *dst, const float *src0, const float *src1, int len){
int i;
float temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
src1 += len-1;
for(i=0; i<(len>>2); i++)
{
/* loop unrolled 4 times */
__asm__ volatile(
"lwc1 %[temp0], 0(%[src0]) \n\t"
"lwc1 %[temp1], 0(%[src1]) \n\t"
"lwc1 %[temp2], 4(%[src0]) \n\t"
"lwc1 %[temp3], -4(%[src1]) \n\t"
"lwc1 %[temp4], 8(%[src0]) \n\t"
"lwc1 %[temp5], -8(%[src1]) \n\t"
"lwc1 %[temp6], 12(%[src0]) \n\t"
"lwc1 %[temp7], -12(%[src1]) \n\t"
"mul.s %[temp0], %[temp1], %[temp0] \n\t"
"mul.s %[temp2], %[temp3], %[temp2] \n\t"
"mul.s %[temp4], %[temp5], %[temp4] \n\t"
"mul.s %[temp6], %[temp7], %[temp6] \n\t"
"addiu %[src0], %[src0], 16 \n\t"
"addiu %[src1], %[src1], -16 \n\t"
"addiu %[dst], %[dst], 16 \n\t"
"swc1 %[temp0], -16(%[dst]) \n\t"
"swc1 %[temp2], -12(%[dst]) \n\t"
"swc1 %[temp4], -8(%[dst]) \n\t"
"swc1 %[temp6], -4(%[dst]) \n\t"
: [dst]"+r"(dst), [src0]"+r"(src0), [src1]"+r"(src1),
[temp0]"=&f"(temp0), [temp1]"=&f"(temp1),[temp2]"=&f"(temp2),
[temp3]"=&f"(temp3), [temp4]"=&f"(temp4), [temp5]"=&f"(temp5),
[temp6]"=&f"(temp6), [temp7]"=&f"(temp7)
:
: "memory"
);
}
}
#endif /* HAVE_INLINE_ASM && HAVE_MIPSFPU */
void ff_float_dsp_init_mips(AVFloatDSPContext *fdsp) {
@ -339,5 +378,6 @@ void ff_float_dsp_init_mips(AVFloatDSPContext *fdsp) {
fdsp->vector_fmul_scalar = vector_fmul_scalar_mips;
fdsp->vector_fmul_window = vector_fmul_window_mips;
fdsp->butterflies_float = butterflies_float_mips;
fdsp->vector_fmul_reverse = vector_fmul_reverse_mips;
#endif /* HAVE_INLINE_ASM && HAVE_MIPSFPU */
}