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19c791cdac6df84418c66eb9d67cfa9703bc2461
mozjpeg/simd/mips/jsimd.c
DRC 19c791cdac Improve code formatting consistency 
With rare exceptions ...
- Always separate line continuation characters by one space from
  preceding code.
- Always use two-space indentation.  Never use tabs.
- Always use K&R-style conditional blocks.
- Always surround operators with spaces, except in raw assembly code.
- Always put a space after, but not before, a comma.
- Never put a space between type casts and variables/function calls.
- Never put a space between the function name and the argument list in
  function declarations and prototypes.
- Always surround braces ('{' and '}') with spaces.
- Always surround statements (if, for, else, catch, while, do, switch)
  with spaces.
- Always attach pointer symbols ('*' and '**') to the variable or
  function name.
- Always precede pointer symbols ('*' and '**') by a space in type
  casts.
- Use the MIN() macro from jpegint.h within the libjpeg and TurboJPEG
  API libraries (using min() from tjutil.h is still necessary for
  TJBench.)
- Where it makes sense (particularly in the TurboJPEG code), put a blank
  line after variable declaration blocks.
- Always separate statements in one-liners by two spaces.

The purpose of this was to ease maintenance on my part and also to make
it easier for contributors to figure out how to format patch
submissions.  This was admittedly confusing (even to me sometimes) when
we had 3 or 4 different style conventions in the same source tree.  The
new convention is more consistent with the formatting of other OSS code
bases.

This commit corrects deviations from the chosen formatting style in the
libjpeg API code and reformats the TurboJPEG API code such that it
conforms to the same standard.

NOTES:
- Although it is no longer necessary for the function name in function
  declarations to begin in Column 1 (this was historically necessary
  because of the ansi2knr utility, which allowed libjpeg to be built
  with non-ANSI compilers), we retain that formatting for the libjpeg
  code because it improves readability when using libjpeg's function
  attribute macros (GLOBAL(), etc.)
- This reformatting project was accomplished with the help of AStyle and
  Uncrustify, although neither was completely up to the task, and thus
  a great deal of manual tweaking was required.  Note to developers of
  code formatting utilities:  the libjpeg-turbo code base is an
  excellent test bed, because AFAICT, it breaks every single one of the
  utilities that are currently available.
- The legacy (MMX, SSE, 3DNow!) assembly code for i386 has been
  formatted to match the SSE2 code (refer to
  ff5685d5344273df321eb63a005eaae19d2496e3.)  I hadn't intended to
  bother with this, but the Loongson MMI implementation demonstrated
  that there is still academic value to the MMX implementation, as an
  algorithmic model for other 64-bit vector implementations.  Thus, it
  is desirable to improve its readability in the same manner as that of
  the SSE2 implementation.
2018-03-16 02:14:34 -05:00

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/*
* jsimd_mips.c
*
* Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
* Copyright (C) 2009-2011, 2014, 2016, D. R. Commander.
* Copyright (C) 2013-2014, MIPS Technologies, Inc., California.
* Copyright (C) 2015, 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>
#include <string.h>
#include <ctype.h>
static unsigned int simd_support = ~0;
#if defined(__linux__)
LOCAL(int)
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 1;
}
}
fclose(f);
}
/* Did not find string in the proc file, or not Linux ELF. */
return 0;
}
#endif
/*
* Check what SIMD accelerations are supported.
*
* FIXME: This code is racy under a multi-threaded environment.
*/
LOCAL(void)
init_simd(void)
{
char *env = NULL;
if (simd_support != ~0U)
return;
simd_support = 0;
#if defined(__MIPSEL__) && 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 */
if (!parse_proc_cpuinfo("MIPS 74K"))
return;
#endif
/* 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;
}
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;
if (simd_support & JSIMD_DSPR2)
return 1;
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;
if (simd_support & JSIMD_DSPR2)
return 1;
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 (simd_support & JSIMD_DSPR2)
return 1;
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 (simd_support & JSIMD_DSPR2)
return 1;
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 (simd_support & JSIMD_DSPR2)
return 1;
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 (simd_support & JSIMD_DSPR2)
return 1;
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;
if (simd_support & JSIMD_DSPR2)
return 1;
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)
{
jsimd_convsamp_float_dspr2(sample_data, start_col, workspace);
}
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 (simd_support & JSIMD_DSPR2)
return 1;
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 (simd_support & JSIMD_DSPR2)
return 1;
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;
if (simd_support & JSIMD_DSPR2)
return 1;
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)
{
jsimd_quantize_float_dspr2(coef_block, divisors, workspace);
}
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 (simd_support & JSIMD_DSPR2)
return 1;
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 (simd_support & JSIMD_DSPR2)
return 1;
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;
}
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