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avcodec: loongson optimize mpeg2 dct unquantize intra and denoise dct 

Change-Id: I2f391ae912a079fb32f0703841dca86358aac72a
Signed-off-by: ZhouXiaoyong <zhouxiaoyong@loongson.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
周晓勇 2015-09-02 18:01:00 +08:00 committed by Michael Niedermayer
parent c4a0a326a1
commit 95010d49a2
3 changed files with 148 additions and 0 deletions
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5
libavcodec/mips/mpegvideo_init_mips.c
View File

@ -37,6 +37,11 @@ static av_cold void dct_unquantize_init_mmi(MpegEncContext *s)
s->dct_unquantize_h263_inter = ff_dct_unquantize_h263_inter_mmi;
s->dct_unquantize_mpeg1_intra = ff_dct_unquantize_mpeg1_intra_mmi;
s->dct_unquantize_mpeg1_inter = ff_dct_unquantize_mpeg1_inter_mmi;
if (!(s->avctx->flags & AV_CODEC_FLAG_BITEXACT))
s->dct_unquantize_mpeg2_intra = ff_dct_unquantize_mpeg2_intra_mmi;
s->denoise_dct= ff_denoise_dct_mmi;
}
#endif /* HAVE_MMI */

3
libavcodec/mips/mpegvideo_mips.h
View File

@ -31,5 +31,8 @@ void ff_dct_unquantize_mpeg1_intra_mmi(MpegEncContext *s, int16_t *block,
int n, int qscale);
void ff_dct_unquantize_mpeg1_inter_mmi(MpegEncContext *s, int16_t *block,
int n, int qscale);
void ff_dct_unquantize_mpeg2_intra_mmi(MpegEncContext *s, int16_t *block,
int n, int qscale);
void ff_denoise_dct_mmi(MpegEncContext *s, int16_t *block);
#endif /* MPEGVIDEO_MIPS_H */

140
libavcodec/mips/mpegvideo_mmi.c
View File

@ -301,3 +301,143 @@ void ff_dct_unquantize_mpeg1_inter_mmi(MpegEncContext *s, int16_t *block,
:"$8","$10","memory"
);
}
void ff_denoise_dct_mmi(MpegEncContext *s, int16_t *block)
{
const int intra = s->mb_intra;
int *sum = s->dct_error_sum[intra];
uint16_t *offset = s->dct_offset[intra];
s->dct_count[intra]++;
__asm__ volatile(
"xor $f14, $f14, $f14 \r\n"
"1: \r\n"
"ldc1 $f4, 0(%[block]) \r\n"
"xor $f0, $f0, $f0 \r\n"
"ldc1 $f6, 8(%[block]) \r\n"
"xor $f2, $f2, $f2 \r\n"
"pcmpgth $f0, $f0, $f4 \r\n"
"pcmpgth $f2, $f2, $f6 \r\n"
"xor $f4, $f4, $f0 \r\n"
"xor $f6, $f6, $f2 \r\n"
"psubh $f4, $f4, $f0 \r\n"
"psubh $f6, $f6, $f2 \r\n"
"ldc1 $f12, 0(%[offset]) \r\n"
"mov.d $f8, $f4 \r\n"
"psubush $f4, $f4, $f12 \r\n"
"ldc1 $f12, 8(%[offset]) \r\n"
"mov.d $f10, $f6 \r\n"
"psubush $f6, $f6, $f12 \r\n"
"xor $f4, $f4, $f0 \r\n"
"xor $f6, $f6, $f2 \r\n"
"psubh $f4, $f4, $f0 \r\n"
"psubh $f6, $f6, $f2 \r\n"
"sdc1 $f4, 0(%[block]) \r\n"
"sdc1 $f6, 8(%[block]) \r\n"
"mov.d $f4, $f8 \r\n"
"mov.d $f6, $f10 \r\n"
"punpcklhw $f8, $f8, $f14 \r\n"
"punpckhhw $f4, $f4, $f14 \r\n"
"punpcklhw $f10, $f10, $f14 \r\n"
"punpckhhw $f6, $f6, $f14 \r\n"
"ldc1 $f0, 0(%[sum]) \r\n"
"paddw $f8, $f8, $f0 \r\n"
"ldc1 $f0, 8(%[sum]) \r\n"
"paddw $f4, $f4, $f0 \r\n"
"ldc1 $f0, 16(%[sum]) \r\n"
"paddw $f10, $f10, $f0 \r\n"
"ldc1 $f0, 24(%[sum]) \r\n"
"paddw $f6, $f6, $f0 \r\n"
"sdc1 $f8, 0(%[sum]) \r\n"
"sdc1 $f4, 8(%[sum]) \r\n"
"sdc1 $f10, 16(%[sum]) \r\n"
"sdc1 $f6, 24(%[sum]) \r\n"
"daddiu %[block], %[block], 16 \r\n"
"daddiu %[sum], %[sum], 32 \r\n"
"daddiu %[offset], %[offset], 16 \r\n"
"dsubu $8, %[block1], %[block] \r\n"
"bgtz $8, 1b \r\n"
: [block]"+r"(block),[sum]"+r"(sum),[offset]"+r"(offset)
: [block1]"r"(block+64)
: "$8","$f0","$f2","$f4","$f6","$f8","$f10","$f12","$f14"
);
}
void ff_dct_unquantize_mpeg2_intra_mmi(MpegEncContext *s, int16_t *block,
int n, int qscale)
{
uint64_t nCoeffs;
const uint16_t *quant_matrix;
int block0;
assert(s->block_last_index[n]>=0);
if (s->alternate_scan)
nCoeffs = 63;
else
nCoeffs = s->intra_scantable.raster_end[s->block_last_index[n]];
if (n < 4)
block0 = block[0] * s->y_dc_scale;
else
block0 = block[0] * s->c_dc_scale;
quant_matrix = s->intra_matrix;
__asm__ volatile (
"pcmpeqh $f14, $f14, $f14 \r\n"
"dli $10, 15 \r\n"
"dmtc1 $10, $f16 \r\n"
"xor $f12, $f12, $f12 \r\n"
"lwc1 $f12, %[qscale] \r\n"
"psrlh $f14, $f14, $f16 \r\n"
"packsswh $f12, $f12, $f12 \r\n"
"packsswh $f12, $f12, $f12 \r\n"
"or $8, %[ncoeffs], $0 \r\n"
".p2align 4 \r\n"
"1: \r\n"
"gsldxc1 $f0, 0($8, %[block]) \r\n"
"gsldxc1 $f2, 8($8, %[block]) \r\n"
"mov.d $f16, $f0 \r\n"
"mov.d $f18, $f2 \r\n"
"gsldxc1 $f8, 0($8, %[quant]) \r\n"
"gsldxc1 $f10, 0($8, %[quant]) \r\n"
"pmullh $f8, $f8, $f12 \r\n"
"pmullh $f10, $f10, $f12 \r\n"
"xor $f4, $f4, $f4 \r\n"
"xor $f6, $f6, $f6 \r\n"
"pcmpgth $f4, $f4, $f0 \r\n"
"pcmpgth $f6, $f6, $f2 \r\n"
"xor $f0, $f0, $f4 \r\n"
"xor $f2, $f2, $f6 \r\n"
"psubh $f0, $f0, $f4 \r\n"
"psubh $f2, $f2, $f6 \r\n"
"pmullh $f0, $f0, $f8 \r\n"
"pmullh $f2, $f2, $f10 \r\n"
"xor $f8, $f8, $f8 \r\n"
"xor $f10, $f10, $f10 \r\n"
"pcmpeqh $f8, $f8, $f16 \r\n"
"pcmpeqh $f10 ,$f10, $f18 \r\n"
"dli $10, 3 \r\n"
"dmtc1 $10, $f16 \r\n"
"psrah $f0, $f0, $f16 \r\n"
"psrah $f2, $f2, $f16 \r\n"
"xor $f0, $f0, $f4 \r\n"
"xor $f2, $f2, $f6 \r\n"
"psubh $f0, $f0, $f4 \r\n"
"psubh $f2, $f2, $f6 \r\n"
"pandn $f8, $f8, $f0 \r\n"
"pandn $f10, $f10, $f2 \r\n"
"gssdxc1 $f8, 0($8, %[block]) \r\n"
"gssdxc1 $f10, 8($8, %[block]) \r\n"
"daddiu $8, $8, 16 \r\n"
"blez $8, 1b \r\n"
::[block]"r"(block+nCoeffs),[quant]"r"(quant_matrix+nCoeffs),
[qscale]"m"(qscale),[ncoeffs]"g"(-2*nCoeffs)
: "$8","$10","$f0","$f2","$f4","$f6","$f8","$f10","$f12","$f14","$f16",
"$f18"
);
block[0]= block0;
}