Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1143 insertions, 0 deletions

diff --git a/media/libjpeg/simd/mips/jsimd.c b/media/libjpeg/simd/mips/jsimd.c
new file mode 100644
index 0000000000..c6e789aa2f
--- /dev/null
+++ b/media/libjpeg/simd/mips/jsimd.c
@@ -0,0 +1,1143 @@
+/*
+ * jsimd_mips.c
+ *
+ * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
+ * Copyright (C) 2009-2011, 2014, 2016, 2018, 2020, 2022, D. R. Commander.
+ * Copyright (C) 2013-2014, MIPS Technologies, Inc., California.
+ * Copyright (C) 2015-2016, 2018, 2022, 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 <ctype.h>
+
+static THREAD_LOCAL 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.
+ */
+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)
+jsimd_can_idct_4x4(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 defined(__MIPSEL__)
+  if (simd_support & JSIMD_DSPR2)
+    return 1;
+#endif
+
+  return 0;
+}
+
+GLOBAL(int)
+jsimd_can_idct_6x6(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)
+jsimd_can_idct_12x12(void)
+{
+  init_simd();
+
+  if (BITS_IN_JSAMPLE != 8)
+    return 0;
+  if (DCTSIZE != 8)
+    return 0;
+  if (sizeof(JCOEF) != 2)
+    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(void)
+jsimd_idct_2x2(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+               JCOEFPTR coef_block, JSAMPARRAY output_buf,
+               JDIMENSION output_col)
+{
+  jsimd_idct_2x2_dspr2(compptr->dct_table, coef_block, output_buf, output_col);
+}
+
+GLOBAL(void)
+jsimd_idct_4x4(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+               JCOEFPTR coef_block, JSAMPARRAY output_buf,
+               JDIMENSION output_col)
+{
+  int workspace[DCTSIZE * 4]; /* buffers data between passes */
+
+  jsimd_idct_4x4_dspr2(compptr->dct_table, coef_block, output_buf, output_col,
+                       workspace);
+}
+
+GLOBAL(void)
+jsimd_idct_6x6(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+               JCOEFPTR coef_block, JSAMPARRAY output_buf,
+               JDIMENSION output_col)
+{
+  jsimd_idct_6x6_dspr2(compptr->dct_table, coef_block, output_buf, output_col);
+}
+
+GLOBAL(void)
+jsimd_idct_12x12(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                 JCOEFPTR coef_block, JSAMPARRAY output_buf,
+                 JDIMENSION output_col)
+{
+  int workspace[96];
+  int output[12] = {
+    (int)(output_buf[0] + output_col),
+    (int)(output_buf[1] + output_col),
+    (int)(output_buf[2] + output_col),
+    (int)(output_buf[3] + output_col),
+    (int)(output_buf[4] + output_col),
+    (int)(output_buf[5] + output_col),
+    (int)(output_buf[6] + output_col),
+    (int)(output_buf[7] + output_col),
+    (int)(output_buf[8] + output_col),
+    (int)(output_buf[9] + output_col),
+    (int)(output_buf[10] + output_col),
+    (int)(output_buf[11] + output_col)
+  };
+
+  jsimd_idct_12x12_pass1_dspr2(coef_block, compptr->dct_table, workspace);
+  jsimd_idct_12x12_pass2_dspr2(workspace, output);
+}
+
+GLOBAL(int)
+jsimd_can_idct_islow(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)
+jsimd_can_idct_ifast(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(IFAST_MULT_TYPE) != 2)
+    return 0;
+  if (IFAST_SCALE_BITS != 2)
+    return 0;
+
+#if defined(__MIPSEL__)
+  if (simd_support & JSIMD_DSPR2)
+    return 1;
+#endif
+
+  return 0;
+}
+
+GLOBAL(int)
+jsimd_can_idct_float(void)
+{
+  return 0;
+}
+
+GLOBAL(void)
+jsimd_idct_islow(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                 JCOEFPTR coef_block, JSAMPARRAY output_buf,
+                 JDIMENSION output_col)
+{
+  int output[8] = {
+    (int)(output_buf[0] + output_col),
+    (int)(output_buf[1] + output_col),
+    (int)(output_buf[2] + output_col),
+    (int)(output_buf[3] + output_col),
+    (int)(output_buf[4] + output_col),
+    (int)(output_buf[5] + output_col),
+    (int)(output_buf[6] + output_col),
+    (int)(output_buf[7] + output_col)
+  };
+
+  jsimd_idct_islow_dspr2(coef_block, compptr->dct_table, output,
+                         IDCT_range_limit(cinfo));
+}
+
+GLOBAL(void)
+jsimd_idct_ifast(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                 JCOEFPTR coef_block, JSAMPARRAY output_buf,
+                 JDIMENSION output_col)
+{
+  JCOEFPTR inptr;
+  IFAST_MULT_TYPE *quantptr;
+  DCTELEM workspace[DCTSIZE2];  /* buffers data between passes */
+
+  /* Pass 1: process columns from input, store into work array. */
+
+  inptr = coef_block;
+  quantptr = (IFAST_MULT_TYPE *)compptr->dct_table;
+
+  jsimd_idct_ifast_cols_dspr2(inptr, quantptr, workspace,
+                              mips_idct_ifast_coefs);
+
+  /* Pass 2: process rows from work array, store into output array. */
+  /* Note that we must descale the results by a factor of 8 == 2**3, */
+  /* and also undo the PASS1_BITS scaling. */
+
+  jsimd_idct_ifast_rows_dspr2(workspace, output_buf, output_col,
+                              mips_idct_ifast_coefs);
+}
+
+GLOBAL(void)
+jsimd_idct_float(j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                 JCOEFPTR coef_block, JSAMPARRAY output_buf,
+                 JDIMENSION output_col)
+{
+}
+
+GLOBAL(int)
+jsimd_can_huff_encode_one_block(void)
+{
+  return 0;
+}
+
+GLOBAL(JOCTET *)
+jsimd_huff_encode_one_block(void *state, JOCTET *buffer, JCOEFPTR block,
+                            int last_dc_val, c_derived_tbl *dctbl,
+                            c_derived_tbl *actbl)
+{
+  return NULL;
+}
+
+GLOBAL(int)
+jsimd_can_encode_mcu_AC_first_prepare(void)
+{
+  return 0;
+}
+
+GLOBAL(void)
+jsimd_encode_mcu_AC_first_prepare(const JCOEF *block,
+                                  const int *jpeg_natural_order_start, int Sl,
+                                  int Al, UJCOEF *values, size_t *zerobits)
+{
+}
+
+GLOBAL(int)
+jsimd_can_encode_mcu_AC_refine_prepare(void)
+{
+  return 0;
+}
+
+GLOBAL(int)
+jsimd_encode_mcu_AC_refine_prepare(const JCOEF *block,
+                                   const int *jpeg_natural_order_start, int Sl,
+                                   int Al, UJCOEF *absvalues, size_t *bits)
+{
+  return 0;
+}