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/*
* 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;
}