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ffmpeg/libavcodec/mips/idctdsp_mmi.c
Shiyou Yin 776909e42e avcodec/mips: [loongson] reoptimize put and add pixels clamped functions. 
Simplify the usage of intermediate variable addr and remove unused variable all64
in following functions:
1. ff_put_pixels_clamped_mmi
2. ff_put_signed_pixels_clamped_mmi
3. ff_add_pixels_clamped_mmi

This optimization speed up mpeg4 decode about 2% on loongson platform(tested with 3A3000).

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-09-05 21:45:52 +02:00

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/*
* Loongson SIMD optimized idctdsp
*
* Copyright (c) 2015 Loongson Technology Corporation Limited
* Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.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 "idctdsp_mips.h"
#include "constants.h"
#include "libavutil/mips/mmiutils.h"
void ff_put_pixels_clamped_mmi(const int16_t *block,
uint8_t *av_restrict pixels, ptrdiff_t line_size)
{
double ftmp[8];
__asm__ volatile (
MMI_LDC1(%[ftmp0], %[block], 0x00)
MMI_LDC1(%[ftmp1], %[block], 0x08)
MMI_LDC1(%[ftmp2], %[block], 0x10)
MMI_LDC1(%[ftmp3], %[block], 0x18)
MMI_LDC1(%[ftmp4], %[block], 0x20)
MMI_LDC1(%[ftmp5], %[block], 0x28)
MMI_LDC1(%[ftmp6], %[block], 0x30)
MMI_LDC1(%[ftmp7], %[block], 0x38)
"packushb %[ftmp0], %[ftmp0], %[ftmp1] \n\t"
"packushb %[ftmp2], %[ftmp2], %[ftmp3] \n\t"
"packushb %[ftmp4], %[ftmp4], %[ftmp5] \n\t"
"packushb %[ftmp6], %[ftmp6], %[ftmp7] \n\t"
MMI_SDC1(%[ftmp0], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp2], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp4], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp6], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_LDC1(%[ftmp0], %[block], 0x40)
MMI_LDC1(%[ftmp1], %[block], 0x48)
MMI_LDC1(%[ftmp2], %[block], 0x50)
MMI_LDC1(%[ftmp3], %[block], 0x58)
MMI_LDC1(%[ftmp4], %[block], 0x60)
MMI_LDC1(%[ftmp5], %[block], 0x68)
MMI_LDC1(%[ftmp6], %[block], 0x70)
MMI_LDC1(%[ftmp7], %[block], 0x78)
"packushb %[ftmp0], %[ftmp0], %[ftmp1] \n\t"
"packushb %[ftmp2], %[ftmp2], %[ftmp3] \n\t"
"packushb %[ftmp4], %[ftmp4], %[ftmp5] \n\t"
"packushb %[ftmp6], %[ftmp6], %[ftmp7] \n\t"
MMI_SDC1(%[ftmp0], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp2], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp4], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp6], %[pixels], 0x00)
: [ftmp0]"=&f"(ftmp[0]), [ftmp1]"=&f"(ftmp[1]),
[ftmp2]"=&f"(ftmp[2]), [ftmp3]"=&f"(ftmp[3]),
[ftmp4]"=&f"(ftmp[4]), [ftmp5]"=&f"(ftmp[5]),
[ftmp6]"=&f"(ftmp[6]), [ftmp7]"=&f"(ftmp[7]),
[pixels]"+&r"(pixels)
: [line_size]"r"((mips_reg)line_size),
[block]"r"(block)
: "memory"
);
}
void ff_put_signed_pixels_clamped_mmi(const int16_t *block,
uint8_t *av_restrict pixels, ptrdiff_t line_size)
{
double ftmp[5];
__asm__ volatile (
MMI_LDC1(%[ftmp1], %[block], 0x00)
MMI_LDC1(%[ftmp0], %[block], 0x08)
"packsshb %[ftmp1], %[ftmp1], %[ftmp0] \n\t"
MMI_LDC1(%[ftmp2], %[block], 0x10)
MMI_LDC1(%[ftmp0], %[block], 0x18)
"packsshb %[ftmp2], %[ftmp2], %[ftmp0] \n\t"
MMI_LDC1(%[ftmp3], %[block], 0x20)
MMI_LDC1(%[ftmp0], %[block], 0x28)
"packsshb %[ftmp3], %[ftmp3], %[ftmp0] \n\t"
MMI_LDC1(%[ftmp4], %[block], 0x30)
MMI_LDC1(%[ftmp0], %[block], 0x38)
"packsshb %[ftmp4], %[ftmp4], %[ftmp0] \n\t"
"paddb %[ftmp1], %[ftmp1], %[ff_pb_80] \n\t"
"paddb %[ftmp2], %[ftmp2], %[ff_pb_80] \n\t"
"paddb %[ftmp3], %[ftmp3], %[ff_pb_80] \n\t"
"paddb %[ftmp4], %[ftmp4], %[ff_pb_80] \n\t"
MMI_SDC1(%[ftmp1], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp2], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp3], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp4], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_LDC1(%[ftmp1], %[block], 0x40)
MMI_LDC1(%[ftmp0], %[block], 0x48)
"packsshb %[ftmp1], %[ftmp1], %[ftmp0] \n\t"
MMI_LDC1(%[ftmp2], %[block], 0x50)
MMI_LDC1(%[ftmp0], %[block], 0x58)
"packsshb %[ftmp2], %[ftmp2], %[ftmp0] \n\t"
MMI_LDC1(%[ftmp3], %[block], 0x60)
MMI_LDC1(%[ftmp0], %[block], 0x68)
"packsshb %[ftmp3], %[ftmp3], %[ftmp0] \n\t"
MMI_LDC1(%[ftmp4], %[block], 0x70)
MMI_LDC1(%[ftmp0], %[block], 0x78)
"packsshb %[ftmp4], %[ftmp4], %[ftmp0] \n\t"
"paddb %[ftmp1], %[ftmp1], %[ff_pb_80] \n\t"
"paddb %[ftmp2], %[ftmp2], %[ff_pb_80] \n\t"
"paddb %[ftmp3], %[ftmp3], %[ff_pb_80] \n\t"
"paddb %[ftmp4], %[ftmp4], %[ff_pb_80] \n\t"
MMI_SDC1(%[ftmp1], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp2], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp3], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp4], %[pixels], 0x00)
: [ftmp0]"=&f"(ftmp[0]), [ftmp1]"=&f"(ftmp[1]),
[ftmp2]"=&f"(ftmp[2]), [ftmp3]"=&f"(ftmp[3]),
[ftmp4]"=&f"(ftmp[4]),
[pixels]"+&r"(pixels)
: [block]"r"(block),
[line_size]"r"((mips_reg)line_size),
[ff_pb_80]"f"(ff_pb_80)
: "memory"
);
}
void ff_add_pixels_clamped_mmi(const int16_t *block,
uint8_t *av_restrict pixels, ptrdiff_t line_size)
{
double ftmp[9];
uint64_t tmp[1];
__asm__ volatile (
"li %[tmp0], 0x04 \n\t"
"xor %[ftmp0], %[ftmp0], %[ftmp0] \n\t"
"1: \n\t"
MMI_LDC1(%[ftmp5], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_LDC1(%[ftmp6], %[pixels], 0x00)
PTR_SUBU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_LDC1(%[ftmp1], %[block], 0x00)
MMI_LDC1(%[ftmp2], %[block], 0x08)
MMI_LDC1(%[ftmp3], %[block], 0x10)
MMI_LDC1(%[ftmp4], %[block], 0x18)
PTR_ADDIU "%[block], %[block], 0x20 \n\t"
"punpckhbh %[ftmp7], %[ftmp5], %[ftmp0] \n\t"
"punpcklbh %[ftmp5], %[ftmp5], %[ftmp0] \n\t"
"punpckhbh %[ftmp8], %[ftmp6], %[ftmp0] \n\t"
"punpcklbh %[ftmp6], %[ftmp6], %[ftmp0] \n\t"
"paddh %[ftmp1], %[ftmp1], %[ftmp5] \n\t"
"paddh %[ftmp2], %[ftmp2], %[ftmp7] \n\t"
"paddh %[ftmp3], %[ftmp3], %[ftmp6] \n\t"
"paddh %[ftmp4], %[ftmp4], %[ftmp8] \n\t"
"packushb %[ftmp1], %[ftmp1], %[ftmp2] \n\t"
"packushb %[ftmp3], %[ftmp3], %[ftmp4] \n\t"
MMI_SDC1(%[ftmp1], %[pixels], 0x00)
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
MMI_SDC1(%[ftmp3], %[pixels], 0x00)
"addi %[tmp0], %[tmp0], -0x01 \n\t"
PTR_ADDU "%[pixels], %[pixels], %[line_size] \n\t"
"bnez %[tmp0], 1b \n\t"
: [ftmp0]"=&f"(ftmp[0]), [ftmp1]"=&f"(ftmp[1]),
[ftmp2]"=&f"(ftmp[2]), [ftmp3]"=&f"(ftmp[3]),
[ftmp4]"=&f"(ftmp[4]), [ftmp5]"=&f"(ftmp[5]),
[ftmp6]"=&f"(ftmp[6]), [ftmp7]"=&f"(ftmp[7]),
[ftmp8]"=&f"(ftmp[8]), [tmp0]"=&r"(tmp[0]),
[pixels]"+&r"(pixels), [block]"+&r"(block)
: [line_size]"r"((mips_reg)line_size)
: "memory"
);
}
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