kc3-lang/libjpeg-turbo/simd/mips64/jdsample-mmi.c

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• Hash : 7fbdfd60
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  Date : 2025-09-25T16:05:15
  

  MMI: Fix some strict compiler warnings
  

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• simd/mips64/jdsample-mmi.c

• /*
   * Loongson MMI optimizations for libjpeg-turbo
   *
   * Copyright (C) 2015, 2018-2019, 2025, D. R. Commander.  All Rights Reserved.
   * Copyright (C) 2016-2018, Loongson Technology Corporation Limited, BeiJing.
   *                          All Rights Reserved.
   * Authors:  ZhuChen     <zhuchen@loongson.cn>
   *           CaiWanwei   <caiwanwei@loongson.cn>
   *           SunZhangzhi <sunzhangzhi-cq@loongson.cn>
   *           ZhangLixia  <zhanglixia-hf@loongson.cn>
   *
   * Based on the x86 SIMD extension for IJG JPEG library
   * Copyright (C) 1999-2006, MIYASAKA Masaru.
   *
   * This software is provided 'as-is', without any express or implied
   * warranty.  In no event will the authors be held liable for any damages
   * arising from the use of this software.
   *
   * Permission is granted to anyone to use this software for any purpose,
   * including commercial applications, and to alter it and redistribute it
   * freely, subject to the following restrictions:
   *
   * 1. The origin of this software must not be misrepresented; you must not
   *    claim that you wrote the original software. If you use this software
   *    in a product, an acknowledgment in the product documentation would be
   *    appreciated but is not required.
   * 2. Altered source versions must be plainly marked as such, and must not be
   *    misrepresented as being the original software.
   * 3. This notice may not be removed or altered from any source distribution.
   */
  
  /* CHROMA UPSAMPLING */
  
  #include "jsimd_mmi.h"
  
  
  enum const_index {
    index_PW_ONE,
    index_PW_TWO,
    index_PW_THREE,
    index_PW_SEVEN,
    index_PW_EIGHT
  };
  
  static uint64_t const_value[] = {
    _uint64_set_pi16(1, 1, 1, 1),
    _uint64_set_pi16(2, 2, 2, 2),
    _uint64_set_pi16(3, 3, 3, 3),
    _uint64_set_pi16(7, 7, 7, 7),
    _uint64_set_pi16(8, 8, 8, 8),
  };
  
  #define PW_ONE    get_const_value(index_PW_ONE)
  #define PW_TWO    get_const_value(index_PW_TWO)
  #define PW_THREE  get_const_value(index_PW_THREE)
  #define PW_SEVEN  get_const_value(index_PW_SEVEN)
  #define PW_EIGHT  get_const_value(index_PW_EIGHT)
  
  
  #define PROCESS_ROW(row, wkoffset, bias1, bias2, shift) { \
    __m64 samp123X, samp3XXX, samp1234, sampX012, samp_1012; \
    __m64 sampXXX4, sampX456, samp3456, samp567X, samp7XXX, samp5678; \
    __m64 outle, outhe, outlo, outho, outl, outh; \
    \
    samp123X = _mm_srli_si64(samp0123, 2 * BYTE_BIT);  /* ( 1 2 3 -) */ \
    sampXXX4 = _mm_slli_si64(samp4567, (SIZEOF_MMWORD - 2) * BYTE_BIT);  /* ( - - - 4) */ \
    samp3XXX = _mm_srli_si64(samp0123, (SIZEOF_MMWORD - 2) * BYTE_BIT);  /* ( 3 - - -) */ \
    sampX456 = _mm_slli_si64(samp4567, 2 * BYTE_BIT);  /* ( - 4 5 6) */ \
    \
    samp1234 = _mm_or_si64(samp123X, sampXXX4);  /* ( 1 2 3 4) */ \
    samp3456 = _mm_or_si64(samp3XXX, sampX456);  /* ( 3 4 5 6) */ \
    \
    sampX012 = _mm_slli_si64(samp0123, 2 * BYTE_BIT);  /* ( - 0 1 2) */ \
    samp567X = _mm_srli_si64(samp4567, 2 * BYTE_BIT);  /* ( 5 6 7 -) */ \
    samp7XXX = _mm_srli_si64(samp4567, (SIZEOF_MMWORD - 2) * BYTE_BIT);  /* ( 7 - - -) */ \
    \
    samp_1012 = _mm_or_si64(sampX012, wk[row]);            /* (-1 0 1 2) */ \
    samp5678 = _mm_or_si64(samp567X, wk[row + wkoffset]);  /* ( 5 6 7 8) */ \
    \
    wk[row] = samp7XXX; \
    \
    samp0123 = _mm_mullo_pi16(samp0123, PW_THREE); \
    samp4567 = _mm_mullo_pi16(samp4567, PW_THREE); \
    samp_1012 = _mm_add_pi16(samp_1012, bias1); \
    samp3456 = _mm_add_pi16(samp3456, bias1); \
    samp1234 = _mm_add_pi16(samp1234, bias2); \
    samp5678 = _mm_add_pi16(samp5678, bias2); \
    \
    outle = _mm_add_pi16(samp_1012, samp0123); \
    outhe = _mm_add_pi16(samp3456, samp4567); \
    outle = _mm_srli_pi16(outle, shift);        /* ( 0  2  4  6) */ \
    outhe = _mm_srli_pi16(outhe, shift);        /* ( 8 10 12 14) */ \
    outlo = _mm_add_pi16(samp1234, samp0123); \
    outho = _mm_add_pi16(samp5678, samp4567); \
    outlo = _mm_srli_pi16(outlo, shift);        /* ( 1  3  5  7) */ \
    outho = _mm_srli_pi16(outho, shift);        /* ( 9 11 13 15) */ \
    \
    outlo = _mm_slli_pi16(outlo, BYTE_BIT); \
    outho = _mm_slli_pi16(outho, BYTE_BIT); \
    outl = _mm_or_si64(outle, outlo);           /* ( 0  1  2  3  4  5  6  7) */ \
    outh = _mm_or_si64(outhe, outho);           /* ( 8  9 10 11 12 13 14 15) */ \
    \
    _mm_store_si64((__m64 *)outptr##row, outl); \
    _mm_store_si64((__m64 *)outptr##row + 1, outh); \
  }
  
  void jsimd_h2v2_fancy_upsample_mmi(int max_v_samp_factor,
                                     JDIMENSION downsampled_width,
                                     JSAMPARRAY input_data,
                                     JSAMPARRAY *output_data_ptr)
  {
    JSAMPARRAY output_data = *output_data_ptr;
    JSAMPROW inptr_1, inptr0, inptr1, outptr0, outptr1;
    int inrow, outrow, incol, tmp, tmp1;
    __m64 this_1l, this_1h, this_1, thiscolsum_1l, thiscolsum_1h;
    __m64 this0l, this0h, this0;
    __m64 this1l, this1h, this1, thiscolsum1l, thiscolsum1h;
    __m64 next_1l, next_1h, next_1, nextcolsum_1l, nextcolsum_1h;
    __m64 next0l, next0h, next0;
    __m64 next1l, next1h, next1, nextcolsum1l, nextcolsum1h;
    __m64 mask0 = 0.0, masklast, samp0123, samp4567, wk[4], zero = 0.0;
  
    mask0 = _mm_cmpeq_pi8(mask0, mask0);
    masklast = _mm_slli_si64(mask0, (SIZEOF_MMWORD - 2) * BYTE_BIT);
    mask0 = _mm_srli_si64(mask0, (SIZEOF_MMWORD - 2) * BYTE_BIT);
  
    for (inrow = 0, outrow = 0; outrow < max_v_samp_factor; inrow++) {
  
      inptr_1 = input_data[inrow - 1];
      inptr0 = input_data[inrow];
      inptr1 = input_data[inrow + 1];
      outptr0 = output_data[outrow++];
      outptr1 = output_data[outrow++];
  
      if (downsampled_width & 7) {
        tmp = (downsampled_width - 1) * sizeof(JSAMPLE);
        tmp1 = downsampled_width * sizeof(JSAMPLE);
        asm(PTR_ADDU  "$8, %3, %6\r\n"
            "lb       $9, ($8)\r\n"
            PTR_ADDU  "$8, %3, %7\r\n"
            "sb       $9, ($8)\r\n"
            PTR_ADDU  "$8, %4, %6\r\n"
            "lb       $9, ($8)\r\n"
            PTR_ADDU  "$8, %4, %7\r\n"
            "sb       $9, ($8)\r\n"
            PTR_ADDU  "$8, %5, %6\r\n"
            "lb       $9, ($8)\r\n"
            PTR_ADDU  "$8, %5, %7\r\n"
            "sb       $9, ($8)\r\n"
            : "=m" (*inptr_1), "=m" (*inptr0), "=m" (*inptr1)
            : "r" (inptr_1), "r" (inptr0), "r" (inptr1), "r" (tmp), "r" (tmp1)
            : "$8", "$9"
           );
      }
  
      /* process the first column block */
      this0 = _mm_load_si64((__m64 *)inptr0);    /* row[ 0][0] */
      this_1 = _mm_load_si64((__m64 *)inptr_1);  /* row[-1][0] */
      this1 = _mm_load_si64((__m64 *)inptr1);    /* row[ 1][0] */
  
      this0l = _mm_unpacklo_pi8(this0, zero);    /* row[ 0][0]( 0 1 2 3) */
      this0h = _mm_unpackhi_pi8(this0, zero);    /* row[ 0][0]( 4 5 6 7) */
      this_1l = _mm_unpacklo_pi8(this_1, zero);  /* row[-1][0]( 0 1 2 3) */
      this_1h = _mm_unpackhi_pi8(this_1, zero);  /* row[-1][0]( 4 5 6 7) */
      this1l = _mm_unpacklo_pi8(this1, zero);    /* row[+1][0]( 0 1 2 3) */
      this1h = _mm_unpackhi_pi8(this1, zero);    /* row[+1][0]( 4 5 6 7) */
  
      this0l = _mm_mullo_pi16(this0l, PW_THREE);
      this0h = _mm_mullo_pi16(this0h, PW_THREE);
  
      thiscolsum_1l = _mm_add_pi16(this_1l, this0l);  /* ( 0 1 2 3) */
      thiscolsum_1h = _mm_add_pi16(this_1h, this0h);  /* ( 4 5 6 7) */
      thiscolsum1l = _mm_add_pi16(this0l, this1l);    /* ( 0 1 2 3) */
      thiscolsum1h = _mm_add_pi16(this0h, this1h);    /* ( 4 5 6 7) */
  
      /* temporarily save the intermediate data */
      _mm_store_si64((__m64 *)outptr0, thiscolsum_1l);
      _mm_store_si64((__m64 *)outptr0 + 1, thiscolsum_1h);
      _mm_store_si64((__m64 *)outptr1, thiscolsum1l);
      _mm_store_si64((__m64 *)outptr1 + 1, thiscolsum1h);
  
      wk[0] = _mm_and_si64(thiscolsum_1l, mask0);  /* ( 0 - - -) */
      wk[1] = _mm_and_si64(thiscolsum1l, mask0);   /* ( 0 - - -) */
  
      for (incol = downsampled_width; incol > 0;
           incol -= 8, inptr_1 += 8, inptr0 += 8, inptr1 += 8,
           outptr0 += 16, outptr1 += 16) {
  
        if (incol > 8) {
          /* process the next column block */
          next0 = _mm_load_si64((__m64 *)inptr0 + 1);    /* row[ 0][1] */
          next_1 = _mm_load_si64((__m64 *)inptr_1 + 1);  /* row[-1][1] */
          next1 = _mm_load_si64((__m64 *)inptr1 + 1);    /* row[+1][1] */
  
          next0l = _mm_unpacklo_pi8(next0, zero);    /* row[ 0][1]( 0 1 2 3) */
          next0h = _mm_unpackhi_pi8(next0, zero);    /* row[ 0][1]( 4 5 6 7) */
          next_1l = _mm_unpacklo_pi8(next_1, zero);  /* row[-1][1]( 0 1 2 3) */
          next_1h = _mm_unpackhi_pi8(next_1, zero);  /* row[-1][1]( 4 5 6 7) */
          next1l = _mm_unpacklo_pi8(next1, zero);    /* row[+1][1]( 0 1 2 3) */
          next1h = _mm_unpackhi_pi8(next1, zero);    /* row[+1][1]( 4 5 6 7) */
  
          next0l = _mm_mullo_pi16(next0l, PW_THREE);
          next0h = _mm_mullo_pi16(next0h, PW_THREE);
  
          nextcolsum_1l = _mm_add_pi16(next_1l, next0l);  /* ( 0 1 2 3) */
          nextcolsum_1h = _mm_add_pi16(next_1h, next0h);  /* ( 4 5 6 7) */
          nextcolsum1l = _mm_add_pi16(next0l, next1l);    /* ( 0 1 2 3) */
          nextcolsum1h = _mm_add_pi16(next0h, next1h);    /* ( 4 5 6 7) */
  
          /* temporarily save the intermediate data */
          _mm_store_si64((__m64 *)outptr0 + 2, nextcolsum_1l);
          _mm_store_si64((__m64 *)outptr0 + 3, nextcolsum_1h);
          _mm_store_si64((__m64 *)outptr1 + 2, nextcolsum1l);
          _mm_store_si64((__m64 *)outptr1 + 3, nextcolsum1h);
  
          wk[2] = _mm_slli_si64(nextcolsum_1l, (SIZEOF_MMWORD - 2) * BYTE_BIT);  /* ( - - - 0) */
          wk[3] = _mm_slli_si64(nextcolsum1l, (SIZEOF_MMWORD - 2) * BYTE_BIT);   /* ( - - - 0) */
        } else {
          __m64 mmitmp;
  
          /* process the last column block */
          mmitmp = _mm_load_si64((__m64 *)outptr0 + 1);
          wk[2] = _mm_and_si64(masklast, mmitmp);        /* ( - - - 7) */
          mmitmp = _mm_load_si64((__m64 *)outptr1 + 1);
          wk[3] = _mm_and_si64(masklast, mmitmp);        /* ( - - - 7) */
        }
  
        /* process the upper row */
        samp0123 = _mm_load_si64((__m64 *)outptr0);      /* ( 0 1 2 3) */ \
        samp4567 = _mm_load_si64((__m64 *)outptr0 + 1);  /* ( 4 5 6 7) */ \
        PROCESS_ROW(0, 2, PW_EIGHT, PW_SEVEN, 4)
  
        /* process the lower row */
        samp0123 = _mm_load_si64((__m64 *)outptr1);      /* ( 0 1 2 3) */ \
        samp4567 = _mm_load_si64((__m64 *)outptr1 + 1);  /* ( 4 5 6 7) */ \
        PROCESS_ROW(1, 2, PW_EIGHT, PW_SEVEN, 4)
      }
    }
  }
  
  
  void jsimd_h2v1_fancy_upsample_mmi(int max_v_samp_factor,
                                     JDIMENSION downsampled_width,
                                     JSAMPARRAY input_data,
                                     JSAMPARRAY *output_data_ptr)
  {
    JSAMPARRAY output_data = *output_data_ptr;
    JSAMPROW inptr0, outptr0;
    int inrow, incol, tmp, tmp1;
    __m64 thisl, this, nextl, next;
    __m64 mask0 = 0.0, masklast, samp0123, samp4567, wk[2], zero = 0.0;
  
    mask0 = _mm_cmpeq_pi8(mask0, mask0);
    masklast = _mm_slli_si64(mask0, (SIZEOF_MMWORD - 2) * BYTE_BIT);
    mask0 = _mm_srli_si64(mask0, (SIZEOF_MMWORD - 2) * BYTE_BIT);
  
    for (inrow = 0; inrow < max_v_samp_factor; inrow++) {
  
      inptr0 = input_data[inrow];
      outptr0 = output_data[inrow];
  
      if (downsampled_width & 7) {
        tmp = (downsampled_width - 1) * sizeof(JSAMPLE);
        tmp1 = downsampled_width * sizeof(JSAMPLE);
        asm(PTR_ADDU  "$8, %1, %2\r\n"
            "lb       $9, ($8)\r\n"
            PTR_ADDU  "$8, %1, %3\r\n"
            "sb       $9, ($8)\r\n"
            : "=m" (*inptr0)
            : "r" (inptr0), "r" (tmp), "r" (tmp1)
            : "$8", "$9"
           );
      }
  
      /* process the first column block */
      this = _mm_load_si64((__m64 *)inptr0);    /* row[ 0][0] */
      thisl = _mm_unpacklo_pi8(this, zero);     /* row[ 0][0]( 0 1 2 3) */
      wk[0] = _mm_and_si64(thisl, mask0);       /* ( 0 - - -) */
  
      for (incol = downsampled_width; incol > 0;
           incol -= 8, inptr0 += 8, outptr0 += 16) {
  
        if (incol > 8) {
          /* process the next column block */
          next = _mm_load_si64((__m64 *)inptr0 + 1);  /* row[ 0][1] */
          nextl = _mm_unpacklo_pi8(next, zero);       /* row[ 0][1]( 0 1 2 3) */
          wk[1] = _mm_slli_si64(nextl, (SIZEOF_MMWORD - 2) * BYTE_BIT);  /* ( - - - 0) */
        } else {
          __m64 thish;
  
          /* process the last column block */
          this = _mm_load_si64((__m64 *)inptr0);  /* row[ 0][0] */
          thish = _mm_unpackhi_pi8(this, zero);   /* row[ 0][1]( 4 5 6 7) */
          wk[1] = _mm_and_si64(masklast, thish);  /* ( - - - 7) */
        }
  
        /* process the row */
        this = _mm_load_si64((__m64 *)inptr0);    /* row[ 0][0] */
        samp0123 = _mm_unpacklo_pi8(this, zero);  /* ( 0 1 2 3) */
        samp4567 = _mm_unpackhi_pi8(this, zero);  /* ( 4 5 6 7) */
        PROCESS_ROW(0, 1, PW_ONE, PW_TWO, 2)
      }
    }
  }
  

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