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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"
#include "libavutil/mips/mmiutils.h"
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];
double ftmp[8];
mips_reg addr[1];
DECLARE_VAR_ALL64;
s->dct_count[intra]++;
__asm__ volatile(
"pxor %[ftmp0], %[ftmp0], %[ftmp0] \n\t"
"1: \n\t"
MMI_LDC1(%[ftmp1], %[block], 0x00)
"pxor %[ftmp2], %[ftmp2], %[ftmp2] \n\t"
MMI_LDC1(%[ftmp3], %[block], 0x08)
"pxor %[ftmp4], %[ftmp4], %[ftmp4] \n\t"
"pcmpgth %[ftmp2], %[ftmp2], %[ftmp1] \n\t"
"pcmpgth %[ftmp4], %[ftmp4], %[ftmp3] \n\t"
"pxor %[ftmp1], %[ftmp1], %[ftmp2] \n\t"
"pxor %[ftmp3], %[ftmp3], %[ftmp4] \n\t"
"psubh %[ftmp1], %[ftmp1], %[ftmp2] \n\t"
"psubh %[ftmp3], %[ftmp3], %[ftmp4] \n\t"
MMI_LDC1(%[ftmp6], %[offset], 0x00)
"mov.d %[ftmp5], %[ftmp1] \n\t"
"psubush %[ftmp1], %[ftmp1], %[ftmp6] \n\t"
MMI_LDC1(%[ftmp6], %[offset], 0x08)
"mov.d %[ftmp7], %[ftmp3] \n\t"
"psubush %[ftmp3], %[ftmp3], %[ftmp6] \n\t"
"pxor %[ftmp1], %[ftmp1], %[ftmp2] \n\t"
"pxor %[ftmp3], %[ftmp3], %[ftmp4] \n\t"
"psubh %[ftmp1], %[ftmp1], %[ftmp2] \n\t"
"psubh %[ftmp3], %[ftmp3], %[ftmp4] \n\t"
MMI_SDC1(%[ftmp1], %[block], 0x00)
MMI_SDC1(%[ftmp3], %[block], 0x08)
"mov.d %[ftmp1], %[ftmp5] \n\t"
"mov.d %[ftmp3], %[ftmp7] \n\t"
"punpcklhw %[ftmp5], %[ftmp5], %[ftmp0] \n\t"
"punpckhhw %[ftmp1], %[ftmp1], %[ftmp0] \n\t"
"punpcklhw %[ftmp7], %[ftmp7], %[ftmp0] \n\t"
"punpckhhw %[ftmp3], %[ftmp3], %[ftmp0] \n\t"
MMI_LDC1(%[ftmp2], %[sum], 0x00)
"paddw %[ftmp5], %[ftmp5], %[ftmp2] \n\t"
MMI_LDC1(%[ftmp2], %[sum], 0x08)
"paddw %[ftmp1], %[ftmp1], %[ftmp2] \n\t"
MMI_LDC1(%[ftmp2], %[sum], 0x10)
"paddw %[ftmp7], %[ftmp7], %[ftmp2] \n\t"
MMI_LDC1(%[ftmp2], %[sum], 0x18)
"paddw %[ftmp3], %[ftmp3], %[ftmp2] \n\t"
MMI_SDC1(%[ftmp5], %[sum], 0x00)
MMI_SDC1(%[ftmp1], %[sum], 0x08)
MMI_SDC1(%[ftmp7], %[sum], 0x10)
MMI_SDC1(%[ftmp3], %[sum], 0x18)
PTR_ADDIU "%[block], %[block], 0x10 \n\t"
PTR_ADDIU "%[sum], %[sum], 0x20 \n\t"
PTR_SUBU "%[addr0], %[block1], %[block] \n\t"
PTR_ADDIU "%[offset], %[offset], 0x10 \n\t"
"bgtz %[addr0], 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]),
RESTRICT_ASM_ALL64
[addr0]"=&r"(addr[0]),
[block]"+&r"(block), [sum]"+&r"(sum),
[offset]"+&r"(offset)
: [block1]"r"(block+64)
: "memory"
);
}
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