diff options
| author | Mirjana Vulin <mvulin@mips.com> | 2013-02-21 14:46:52 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-02-21 22:43:08 +0100 |
| commit | 8d2eb5fe58ae30ddef6b052ffdfa3280cbcc5568 (patch) | |
| tree | 10e25c9c312b204885e00d51651679ba49185aa2 /libavutil/mips | |
| parent | 67b3fcf65578fe7811a586393da4c188d7bdb327 (diff) | |
mips: optimization for float aac decoder (sbr module)
Signed-off-by: Mirjana Vulin <mvulin@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil/mips')
| -rw-r--r-- | libavutil/mips/float_dsp_mips.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/libavutil/mips/float_dsp_mips.c b/libavutil/mips/float_dsp_mips.c index 5211a265d4..06d52dc258 100644 --- a/libavutil/mips/float_dsp_mips.c +++ b/libavutil/mips/float_dsp_mips.c @@ -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 */ } |