/*

 * jsimd_mips.c

 *

 * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB</ossman@cendio.se>

 * Copyright (C) 2009-2011, 2014, 2016, 2018, 2020, D. R. Commander.

 * Copyright (C) 2013-2014, MIPS Technologies, Inc., California.

 * Copyright (C) 2015-2016, 2018, Matthieu Darbois.

 *

 * Based on the x86 SIMD extension for IJG JPEG library,

 * Copyright (C) 1999-2006, MIYASAKA Masaru.

 * For conditions of distribution and use, see copyright notice in jsimdext.inc

 *

 * This file contains the interface between the "normal" portions

 * of the library and the SIMD implementations when running on a

 * MIPS architecture.

 */

#define JPEG_INTERNALS

#include "../../jinclude.h"

#include "../../jpeglib.h"

#include "../../jsimd.h"

#include "../../jdct.h"

#include "../../jsimddct.h"

#include "../jsimd.h"

#include <stdio.h></stdio.h>

#include <string.h></string.h>

#include <ctype.h></ctype.h>

static unsigned int simd_support = ~0;

#if !(defined(__mips_dsp) && (__mips_dsp_rev >= 2)) && defined(__linux__)

LOCAL(void)

parse_proc_cpuinfo(const char *search_string)

{

  const char *file_name = "/proc/cpuinfo";

  char cpuinfo_line[256];

  FILE *f = NULL;

  simd_support = 0;

  if ((f = fopen(file_name, "r")) != NULL) {

    while (fgets(cpuinfo_line, sizeof(cpuinfo_line), f) != NULL) {

      if (strstr(cpuinfo_line, search_string) != NULL) {

        fclose(f);

        simd_support |= JSIMD_DSPR2;

        return;

      }

    }

    fclose(f);

  }

  /* Did not find string in the proc file, or not Linux ELF. */

}

#endif

/*

 * Check what SIMD accelerations are supported.

 *

 * FIXME: This code is racy under a multi-threaded environment.

 */

LOCAL(void)

init_simd(void)

{

#ifndef NO_GETENV

  char *env = NULL;

#endif

  if (simd_support != ~0U)

    return;

  simd_support = 0;

#if defined(__mips_dsp) && (__mips_dsp_rev >= 2)

  simd_support |= JSIMD_DSPR2;

#elif defined(__linux__)

  /* We still have a chance to use MIPS DSPR2 regardless of globally used

   * -mdspr2 options passed to gcc by performing runtime detection via

   * /proc/cpuinfo parsing on linux */

  parse_proc_cpuinfo("MIPS 74K");

#endif

#ifndef NO_GETENV

  /* Force different settings through environment variables */

  env = getenv("JSIMD_FORCEDSPR2");

  if ((env != NULL) && (strcmp(env, "1") == 0))

    simd_support = JSIMD_DSPR2;

  env = getenv("JSIMD_FORCENONE");

  if ((env != NULL) && (strcmp(env, "1") == 0))

    simd_support = 0;

#endif

}

static const int mips_idct_ifast_coefs[4] = {

  0x45404540,           /* FIX( 1.082392200 / 2) =  17734 = 0x4546 */

  0x5A805A80,           /* FIX( 1.414213562 / 2) =  23170 = 0x5A82 */

  0x76407640,           /* FIX( 1.847759065 / 2) =  30274 = 0x7642 */

  0xAC60AC60            /* FIX(-2.613125930 / 4) = -21407 = 0xAC61 */

};

/* The following struct is borrowed from jdsample.c */

typedef void (*upsample1_ptr) (j_decompress_ptr cinfo,

                               jpeg_component_info *compptr,

                               JSAMPARRAY input_data,

                               JSAMPARRAY *output_data_ptr);

typedef struct {

  struct jpeg_upsampler pub;

  JSAMPARRAY color_buf[MAX_COMPONENTS];

  upsample1_ptr methods[MAX_COMPONENTS];

  int next_row_out;

  JDIMENSION rows_to_go;

  int rowgroup_height[MAX_COMPONENTS];

  UINT8 h_expand[MAX_COMPONENTS];

  UINT8 v_expand[MAX_COMPONENTS];

} my_upsampler;

typedef my_upsampler *my_upsample_ptr;

GLOBAL(int)

jsimd_can_rgb_ycc(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(int)

jsimd_can_rgb_gray(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(int)

jsimd_can_ycc_rgb(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(int)

jsimd_can_ycc_rgb565(void)

{

  return 0;

}

GLOBAL(int)

jsimd_c_can_null_convert(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(void)

jsimd_rgb_ycc_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf,

                      JSAMPIMAGE output_buf, JDIMENSION output_row,

                      int num_rows)

{

  void (*dspr2fct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);

  switch (cinfo->in_color_space) {

  case JCS_EXT_RGB:

    dspr2fct = jsimd_extrgb_ycc_convert_dspr2;

    break;

  case JCS_EXT_RGBX:

  case JCS_EXT_RGBA:

    dspr2fct = jsimd_extrgbx_ycc_convert_dspr2;

    break;

  case JCS_EXT_BGR:

    dspr2fct = jsimd_extbgr_ycc_convert_dspr2;

    break;

  case JCS_EXT_BGRX:

  case JCS_EXT_BGRA:

    dspr2fct = jsimd_extbgrx_ycc_convert_dspr2;

    break;

  case JCS_EXT_XBGR:

  case JCS_EXT_ABGR:

    dspr2fct = jsimd_extxbgr_ycc_convert_dspr2;

    break;

  case JCS_EXT_XRGB:

  case JCS_EXT_ARGB:

    dspr2fct = jsimd_extxrgb_ycc_convert_dspr2;

    break;

  default:

    dspr2fct = jsimd_extrgb_ycc_convert_dspr2;

    break;

  }

  dspr2fct(cinfo->image_width, input_buf, output_buf, output_row, num_rows);

}

GLOBAL(void)

jsimd_rgb_gray_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf,

                       JSAMPIMAGE output_buf, JDIMENSION output_row,

                       int num_rows)

{

  void (*dspr2fct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);

  switch (cinfo->in_color_space) {

  case JCS_EXT_RGB:

    dspr2fct = jsimd_extrgb_gray_convert_dspr2;

    break;

  case JCS_EXT_RGBX:

  case JCS_EXT_RGBA:

    dspr2fct = jsimd_extrgbx_gray_convert_dspr2;

    break;

  case JCS_EXT_BGR:

    dspr2fct = jsimd_extbgr_gray_convert_dspr2;

    break;

  case JCS_EXT_BGRX:

  case JCS_EXT_BGRA:

    dspr2fct = jsimd_extbgrx_gray_convert_dspr2;

    break;

  case JCS_EXT_XBGR:

  case JCS_EXT_ABGR:

    dspr2fct = jsimd_extxbgr_gray_convert_dspr2;

    break;

  case JCS_EXT_XRGB:

  case JCS_EXT_ARGB:

    dspr2fct = jsimd_extxrgb_gray_convert_dspr2;

    break;

  default:

    dspr2fct = jsimd_extrgb_gray_convert_dspr2;

    break;

  }

  dspr2fct(cinfo->image_width, input_buf, output_buf, output_row, num_rows);

}

GLOBAL(void)

jsimd_ycc_rgb_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,

                      JDIMENSION input_row, JSAMPARRAY output_buf,

                      int num_rows)

{

  void (*dspr2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int);

  switch (cinfo->out_color_space) {

  case JCS_EXT_RGB:

    dspr2fct = jsimd_ycc_extrgb_convert_dspr2;

    break;

  case JCS_EXT_RGBX:

  case JCS_EXT_RGBA:

    dspr2fct = jsimd_ycc_extrgbx_convert_dspr2;

    break;

  case JCS_EXT_BGR:

    dspr2fct = jsimd_ycc_extbgr_convert_dspr2;

    break;

  case JCS_EXT_BGRX:

  case JCS_EXT_BGRA:

    dspr2fct = jsimd_ycc_extbgrx_convert_dspr2;

    break;

  case JCS_EXT_XBGR:

  case JCS_EXT_ABGR:

    dspr2fct = jsimd_ycc_extxbgr_convert_dspr2;

    break;

  case JCS_EXT_XRGB:

  case JCS_EXT_ARGB:

    dspr2fct = jsimd_ycc_extxrgb_convert_dspr2;

    break;

  default:

    dspr2fct = jsimd_ycc_extrgb_convert_dspr2;

    break;

  }

  dspr2fct(cinfo->output_width, input_buf, input_row, output_buf, num_rows);

}

GLOBAL(void)

jsimd_ycc_rgb565_convert(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,

                         JDIMENSION input_row, JSAMPARRAY output_buf,

                         int num_rows)

{

}

GLOBAL(void)

jsimd_c_null_convert(j_compress_ptr cinfo, JSAMPARRAY input_buf,

                     JSAMPIMAGE output_buf, JDIMENSION output_row,

                     int num_rows)

{

  jsimd_c_null_convert_dspr2(cinfo->image_width, input_buf, output_buf,

                             output_row, num_rows, cinfo->num_components);

}

GLOBAL(int)

jsimd_can_h2v2_downsample(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  /* FIXME: jsimd_h2v2_downsample_dspr2() fails some of the TJBench tiling

   * regression tests, probably because the DSPr2 SIMD implementation predates

   * those tests. */

#if 0

  if (simd_support & JSIMD_DSPR2)

    return 1;

#endif

  return 0;

}

GLOBAL(int)

jsimd_can_h2v2_smooth_downsample(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if (DCTSIZE != 8)

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(int)

jsimd_can_h2v1_downsample(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  /* FIXME: jsimd_h2v1_downsample_dspr2() fails some of the TJBench tiling

   * regression tests, probably because the DSPr2 SIMD implementation predates

   * those tests. */

#if 0

  if (simd_support & JSIMD_DSPR2)

    return 1;

#endif

  return 0;

}

GLOBAL(void)

jsimd_h2v2_downsample(j_compress_ptr cinfo, jpeg_component_info *compptr,

                      JSAMPARRAY input_data, JSAMPARRAY output_data)

{

  jsimd_h2v2_downsample_dspr2(cinfo->image_width, cinfo->max_v_samp_factor,

                              compptr->v_samp_factor, compptr->width_in_blocks,

                              input_data, output_data);

}

GLOBAL(void)

jsimd_h2v2_smooth_downsample(j_compress_ptr cinfo,

                             jpeg_component_info *compptr,

                             JSAMPARRAY input_data, JSAMPARRAY output_data)

{

  jsimd_h2v2_smooth_downsample_dspr2(input_data, output_data,

                                     compptr->v_samp_factor,

                                     cinfo->max_v_samp_factor,

                                     cinfo->smoothing_factor,

                                     compptr->width_in_blocks,

                                     cinfo->image_width);

}

GLOBAL(void)

jsimd_h2v1_downsample(j_compress_ptr cinfo, jpeg_component_info *compptr,

                      JSAMPARRAY input_data, JSAMPARRAY output_data)

{

  jsimd_h2v1_downsample_dspr2(cinfo->image_width, cinfo->max_v_samp_factor,

                              compptr->v_samp_factor, compptr->width_in_blocks,

                              input_data, output_data);

}

GLOBAL(int)

jsimd_can_h2v2_upsample(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(int)

jsimd_can_h2v1_upsample(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

#if defined(__MIPSEL__)

  if (simd_support & JSIMD_DSPR2)

    return 1;

#endif

  return 0;

}

GLOBAL(int)

jsimd_can_int_upsample(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(void)

jsimd_h2v2_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,

                    JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)

{

  jsimd_h2v2_upsample_dspr2(cinfo->max_v_samp_factor, cinfo->output_width,

                            input_data, output_data_ptr);

}

GLOBAL(void)

jsimd_h2v1_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,

                    JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)

{

  jsimd_h2v1_upsample_dspr2(cinfo->max_v_samp_factor, cinfo->output_width,

                            input_data, output_data_ptr);

}

GLOBAL(void)

jsimd_int_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,

                   JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)

{

  my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample;

  jsimd_int_upsample_dspr2(upsample->h_expand[compptr->component_index],

                           upsample->v_expand[compptr->component_index],

                           input_data, output_data_ptr, cinfo->output_width,

                           cinfo->max_v_samp_factor);

}

GLOBAL(int)

jsimd_can_h2v2_fancy_upsample(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

#if defined(__MIPSEL__)

  if (simd_support & JSIMD_DSPR2)

    return 1;

#endif

  return 0;

}

GLOBAL(int)

jsimd_can_h2v1_fancy_upsample(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

#if defined(__MIPSEL__)

  if (simd_support & JSIMD_DSPR2)

    return 1;

#endif

  return 0;

}

GLOBAL(void)

jsimd_h2v2_fancy_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,

                          JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)

{

  jsimd_h2v2_fancy_upsample_dspr2(cinfo->max_v_samp_factor,

                                  compptr->downsampled_width, input_data,

                                  output_data_ptr);

}

GLOBAL(void)

jsimd_h2v1_fancy_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr,

                          JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)

{

  jsimd_h2v1_fancy_upsample_dspr2(cinfo->max_v_samp_factor,

                                  compptr->downsampled_width, input_data,

                                  output_data_ptr);

}

GLOBAL(int)

jsimd_can_h2v2_merged_upsample(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(int)

jsimd_can_h2v1_merged_upsample(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(void)

jsimd_h2v2_merged_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,

                           JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf)

{

  void (*dspr2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, JSAMPLE *);

  switch (cinfo->out_color_space) {

  case JCS_EXT_RGB:

    dspr2fct = jsimd_h2v2_extrgb_merged_upsample_dspr2;

    break;

  case JCS_EXT_RGBX:

  case JCS_EXT_RGBA:

    dspr2fct = jsimd_h2v2_extrgbx_merged_upsample_dspr2;

    break;

  case JCS_EXT_BGR:

    dspr2fct = jsimd_h2v2_extbgr_merged_upsample_dspr2;

    break;

  case JCS_EXT_BGRX:

  case JCS_EXT_BGRA:

    dspr2fct = jsimd_h2v2_extbgrx_merged_upsample_dspr2;

    break;

  case JCS_EXT_XBGR:

  case JCS_EXT_ABGR:

    dspr2fct = jsimd_h2v2_extxbgr_merged_upsample_dspr2;

    break;

  case JCS_EXT_XRGB:

  case JCS_EXT_ARGB:

    dspr2fct = jsimd_h2v2_extxrgb_merged_upsample_dspr2;

    break;

  default:

    dspr2fct = jsimd_h2v2_extrgb_merged_upsample_dspr2;

    break;

  }

  dspr2fct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf,

           cinfo->sample_range_limit);

}

GLOBAL(void)

jsimd_h2v1_merged_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,

                           JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf)

{

  void (*dspr2fct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, JSAMPLE *);

  switch (cinfo->out_color_space) {

  case JCS_EXT_RGB:

    dspr2fct = jsimd_h2v1_extrgb_merged_upsample_dspr2;

    break;

  case JCS_EXT_RGBX:

  case JCS_EXT_RGBA:

    dspr2fct = jsimd_h2v1_extrgbx_merged_upsample_dspr2;

    break;

  case JCS_EXT_BGR:

    dspr2fct = jsimd_h2v1_extbgr_merged_upsample_dspr2;

    break;

  case JCS_EXT_BGRX:

  case JCS_EXT_BGRA:

    dspr2fct = jsimd_h2v1_extbgrx_merged_upsample_dspr2;

    break;

  case JCS_EXT_XBGR:

  case JCS_EXT_ABGR:

    dspr2fct = jsimd_h2v1_extxbgr_merged_upsample_dspr2;

    break;

  case JCS_EXT_XRGB:

  case JCS_EXT_ARGB:

    dspr2fct = jsimd_h2v1_extxrgb_merged_upsample_dspr2;

    break;

  default:

    dspr2fct = jsimd_h2v1_extrgb_merged_upsample_dspr2;

    break;

  }

  dspr2fct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf,

           cinfo->sample_range_limit);

}

GLOBAL(int)

jsimd_can_convsamp(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (DCTSIZE != 8)

    return 0;

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if (sizeof(DCTELEM) != 2)

    return 0;

#if defined(__MIPSEL__)

  if (simd_support & JSIMD_DSPR2)

    return 1;

#endif

  return 0;

}

GLOBAL(int)

jsimd_can_convsamp_float(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (DCTSIZE != 8)

    return 0;

  if (sizeof(JCOEF) != 2)

    return 0;

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if (sizeof(ISLOW_MULT_TYPE) != 2)

    return 0;

#ifndef __mips_soft_float

  if (simd_support & JSIMD_DSPR2)

    return 1;

#endif

  return 0;

}

GLOBAL(void)

jsimd_convsamp(JSAMPARRAY sample_data, JDIMENSION start_col,

               DCTELEM *workspace)

{

  jsimd_convsamp_dspr2(sample_data, start_col, workspace);

}

GLOBAL(void)

jsimd_convsamp_float(JSAMPARRAY sample_data, JDIMENSION start_col,

                     FAST_FLOAT *workspace)

{

#ifndef __mips_soft_float

  jsimd_convsamp_float_dspr2(sample_data, start_col, workspace);

#endif

}

GLOBAL(int)

jsimd_can_fdct_islow(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (DCTSIZE != 8)

    return 0;

  if (sizeof(DCTELEM) != 2)

    return 0;

#if defined(__MIPSEL__)

  if (simd_support & JSIMD_DSPR2)

    return 1;

#endif

  return 0;

}

GLOBAL(int)

jsimd_can_fdct_ifast(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (DCTSIZE != 8)

    return 0;

  if (sizeof(DCTELEM) != 2)

    return 0;

#if defined(__MIPSEL__)

  if (simd_support & JSIMD_DSPR2)

    return 1;

#endif

  return 0;

}

GLOBAL(int)

jsimd_can_fdct_float(void)

{

  return 0;

}

GLOBAL(void)

jsimd_fdct_islow(DCTELEM *data)

{

  jsimd_fdct_islow_dspr2(data);

}

GLOBAL(void)

jsimd_fdct_ifast(DCTELEM *data)

{

  jsimd_fdct_ifast_dspr2(data);

}

GLOBAL(void)

jsimd_fdct_float(FAST_FLOAT *data)

{

}

GLOBAL(int)

jsimd_can_quantize(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (DCTSIZE != 8)

    return 0;

  if (sizeof(JCOEF) != 2)

    return 0;

  if (sizeof(DCTELEM) != 2)

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(int)

jsimd_can_quantize_float(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (DCTSIZE != 8)

    return 0;

  if (sizeof(JCOEF) != 2)

    return 0;

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if (sizeof(ISLOW_MULT_TYPE) != 2)

    return 0;

#ifndef __mips_soft_float

  if (simd_support & JSIMD_DSPR2)

    return 1;

#endif

  return 0;

}

GLOBAL(void)

jsimd_quantize(JCOEFPTR coef_block, DCTELEM *divisors, DCTELEM *workspace)

{

  jsimd_quantize_dspr2(coef_block, divisors, workspace);

}

GLOBAL(void)

jsimd_quantize_float(JCOEFPTR coef_block, FAST_FLOAT *divisors,

                     FAST_FLOAT *workspace)

{

#ifndef __mips_soft_float

  jsimd_quantize_float_dspr2(coef_block, divisors, workspace);

#endif

}

GLOBAL(int)

jsimd_can_idct_2x2(void)

{

  init_simd();

  /* The code is optimised for these values only */

  if (DCTSIZE != 8)

    return 0;

  if (sizeof(JCOEF) != 2)

    return 0;

  if (BITS_IN_JSAMPLE != 8)

    return 0;

  if (sizeof(JDIMENSION) != 4)

    return 0;

  if (sizeof(ISLOW_MULT_TYPE) != 2)

    return 0;

  if (simd_support & JSIMD_DSPR2)

    return 1;

  return 0;

}

GLOBAL(int)