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FFmpeg/libavcodec/mips/mpegvideo_mmi.c
周晓勇 95010d49a2 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>
2015-09-02 16:53:32 +02:00

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/*
* Loongson SIMD optimized mpegvideo
*
* Copyright (c) 2015 Loongson Technology Corporation Limited
* Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
* Zhang Shuangshuang <zhangshuangshuang@ict.ac.cn>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "mpegvideo_mips.h"
void ff_dct_unquantize_h263_intra_mmi(MpegEncContext *s, int16_t *block,
int n, int qscale)
{
int64_t level, qmul, qadd, nCoeffs;
qmul = qscale << 1;
av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
if (!s->h263_aic) {
if (n<4)
level = block[0] * s->y_dc_scale;
else
level = block[0] * s->c_dc_scale;
qadd = (qscale-1) | 1;
} else {
qadd = 0;
level = block[0];
}
if(s->ac_pred)
nCoeffs = 63;
else
nCoeffs = s->inter_scantable.raster_end[s->block_last_index[n]];
__asm__ volatile (
"xor $f12, $f12, $f12 \r\n"
"lwc1 $f12, %1 \n\r"
"xor $f10, $f10, $f10 \r\n"
"lwc1 $f10, %2 \r\n"
"xor $f14, $f14, $f14 \r\n"
"packsswh $f12, $f12, $f12 \r\n"
"packsswh $f12, $f12, $f12 \r\n"
"packsswh $f10, $f10, $f10 \r\n"
"packsswh $f10, $f10, $f10 \r\n"
"psubh $f14, $f14, $f10 \r\n"
"xor $f8, $f8, $f8 \r\n"
".p2align 4 \r\n"
"1: \r\n"
"daddu $8, %0, %3 \r\n"
"gsldlc1 $f0, 7($8) \r\n"
"gsldrc1 $f0, 0($8) \r\n"
"gsldlc1 $f2, 15($8) \r\n"
"gsldrc1 $f2, 8($8) \r\n"
"mov.d $f4, $f0 \r\n"
"mov.d $f6, $f2 \r\n"
"pmullh $f0, $f0, $f12 \r\n"
"pmullh $f2, $f2, $f12 \r\n"
"pcmpgth $f4, $f4, $f8 \r\n"
"pcmpgth $f6, $f6, $f8 \r\n"
"xor $f0, $f0, $f4 \r\n"
"xor $f2, $f2, $f6 \r\n"
"paddh $f0, $f0, $f14 \r\n"
"paddh $f2, $f2, $f14 \r\n"
"xor $f4, $f4, $f0 \r\n"
"xor $f6, $f6, $f2 \r\n"
"pcmpeqh $f0, $f0, $f14 \r\n"
"pcmpeqh $f2, $f2, $f14 \r\n"
"pandn $f0, $f0, $f4 \r\n"
"pandn $f2, $f2, $f6 \r\n"
"gssdlc1 $f0, 7($8) \r\n"
"gssdrc1 $f0, 0($8) \r\n"
"gssdlc1 $f2, 15($8) \r\n"
"gssdrc1 $f2, 8($8) \r\n"
"addi %3, %3, 16 \r\n"
"blez %3, 1b \r\n"
::"r"(block+nCoeffs),"m"(qmul),"m"(qadd),"r"(2*(-nCoeffs))
:"$8","memory"
);
block[0] = level;
}
void ff_dct_unquantize_h263_inter_mmi(MpegEncContext *s, int16_t *block,
int n, int qscale)
{
int64_t qmul, qadd, nCoeffs;
qmul = qscale << 1;
qadd = (qscale - 1) | 1;
av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
nCoeffs = s->inter_scantable.raster_end[s->block_last_index[n]];
__asm__ volatile (
"xor $f12, $f12, $f12 \r\n"
"lwc1 $f12, %1 \r\n"
"xor $f10, $f10, $f10 \r\n"
"lwc1 $f10, %2 \r\n"
"packsswh $f12, $f12, $f12 \r\n"
"packsswh $f12, $f12, $f12 \r\n"
"xor $f14, $f14, $f14 \r\n"
"packsswh $f10, $f10, $f10 \r\n"
"packsswh $f10, $f10, $f10 \r\n"
"psubh $f14, $f14, $f10 \r\n"
"xor $f8, $f8, $f8 \r\n"
".p2align 4 \r\n"
"1: \r\n"
"daddu $8, %0, %3 \r\n"
"gsldlc1 $f0, 7($8) \r\n"
"gsldrc1 $f0, 0($8) \r\n"
"gsldlc1 $f2, 15($8) \r\n"
"gsldrc1 $f2, 8($8) \r\n"
"mov.d $f4, $f0 \r\n"
"mov.d $f6, $f2 \r\n"
"pmullh $f0, $f0, $f12 \r\n"
"pmullh $f2, $f2, $f12 \r\n"
"pcmpgth $f4, $f4, $f8 \r\n"
"pcmpgth $f6, $f6, $f8 \r\n"
"xor $f0, $f0, $f4 \r\n"
"xor $f2, $f2, $f6 \r\n"
"paddh $f0, $f0, $f14 \r\n"
"paddh $f2, $f2, $f14 \r\n"
"xor $f4, $f4, $f0 \r\n"
"xor $f6, $f6, $f2 \r\n"
"pcmpeqh $f0, $f0, $f14 \r\n"
"pcmpeqh $f2, $f2, $f14 \r\n"
"pandn $f0, $f0, $f4 \r\n"
"pandn $f2, $f2, $f6 \r\n"
"gssdlc1 $f0, 7($8) \r\n"
"gssdrc1 $f0, 0($8) \r\n"
"gssdlc1 $f2, 15($8) \r\n"
"gssdrc1 $f2, 8($8) \r\n"
"addi %3, %3, 16 \r\n"
"blez %3, 1b \r\n"
::"r"(block+nCoeffs),"m"(qmul),"m"(qadd),"r"(2*(-nCoeffs))
: "$8","memory"
);
}
void ff_dct_unquantize_mpeg1_intra_mmi(MpegEncContext *s, int16_t *block,
int n, int qscale)
{
int64_t nCoeffs;
const uint16_t *quant_matrix;
int block0;
av_assert2(s->block_last_index[n]>=0);
nCoeffs = s->intra_scantable.raster_end[s->block_last_index[n]] + 1;
if (n<4)
block0 = block[0] * s->y_dc_scale;
else
block0 = block[0] * s->c_dc_scale;
/* XXX: only mpeg1 */
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, %2 \r\n"
"psrlh $f14, $f14, $f16 \r\n"
"packsswh $f12, $f12, $f12 \r\n"
"packsswh $f12, $f12, $f12 \r\n"
"or $8, %3, $0 \r\n"
".p2align 4 \r\n"
"1: \r\n"
"gsldxc1 $f0, 0($8, %0) \r\n"
"gsldxc1 $f2, 8($8, %0) \r\n"
"mov.d $f16, $f0 \r\n"
"mov.d $f18, $f2 \r\n"
"gsldxc1 $f8, 0($8, %1) \r\n"
"gsldxc1 $f10, 8($8, %1) \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"
"psubh $f0, $f0, $f14 \r\n"
"psubh $f2, $f2, $f14 \r\n"
"or $f0, $f0, $f14 \r\n"
"or $f2, $f2, $f14 \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, %0) \r\n"
"gssdxc1 $f10, 8($8, %0) \r\n"
"addi $8, $8, 16 \r\n"
"bltz $8, 1b \r\n"
::"r"(block+nCoeffs),"r"(quant_matrix+nCoeffs),"m"(qscale),
"g"(-2*nCoeffs)
: "$8","$10","memory"
);
block[0] = block0;
}
void ff_dct_unquantize_mpeg1_inter_mmi(MpegEncContext *s, int16_t *block,
int n, int qscale)
{
int64_t nCoeffs;
const uint16_t *quant_matrix;
av_assert2(s->block_last_index[n] >= 0);
nCoeffs = s->intra_scantable.raster_end[s->block_last_index[n]] + 1;
quant_matrix = s->inter_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, %2 \r\n"
"psrlh $f14, $f14, $f16 \r\n"
"packsswh $f12, $f12, $f12 \r\n"
"packsswh $f12, $f12, $f12 \r\n"
"or $8, %3, $0 \r\n"
".p2align 4 \r\n"
"1: \r\n"
"gsldxc1 $f0, 0($8, %0) \r\n"
"gsldxc1 $f2, 8($8, %0) \r\n"
"mov.d $f16, $f0 \r\n"
"mov.d $f18, $f2 \r\n"
"gsldxc1 $f8, 0($8, %1) \r\n"
"gsldxc1 $f10, 8($8, %1) \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"
"paddh $f0, $f0, $f0 \r\n"
"paddh $f2, $f2, $f2 \r\n"
"paddh $f0, $f0, $f14 \r\n"
"paddh $f2, $f2, $f14 \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, 4 \r\n"
"dmtc1 $10, $f16 \r\n"
"psrah $f0, $f0, $f16 \r\n"
"psrah $f2, $f2, $f16 \r\n"
"psubh $f0, $f0, $f14 \r\n"
"psubh $f2, $f2, $f14 \r\n"
"or $f0, $f0, $f14 \r\n"
"or $f2, $f2, $f14 \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, %0) \r\n"
"gssdxc1 $f10, 8($8, %0) \r\n"
"addi $8, $8, 16 \r\n"
"bltz $8, 1b \r\n"
::"r"(block+nCoeffs),"r"(quant_matrix+nCoeffs),"m"(qscale),
"g"(-2*nCoeffs)
:"$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;
}
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