blob: d0d3981e06693f93ee10d1833e0b8bd592e46b5e [file] [log] [blame]
/*
* jsimd_powerpc.c
*
* Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
* Copyright (C) 2009-2011, 2014-2016, 2018, D. R. Commander.
* 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
* PowerPC architecture.
*/
#ifdef __amigaos4__
/* This must be defined first as it re-defines GLOBAL otherwise */
#include <proto/exec.h>
#endif
#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>
#if defined(__OpenBSD__)
#include <sys/param.h>
#include <sys/sysctl.h>
#include <machine/cpu.h>
#endif
static unsigned int simd_support = ~0;
#if !defined(__ALTIVEC__) && (defined(__linux__) || defined(ANDROID) || defined(__ANDROID__))
#define SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT (1024 * 1024)
LOCAL(int)
check_feature(char *buffer, char *feature)
{
char *p;
if (*feature == 0)
return 0;
if (strncmp(buffer, "cpu", 3) != 0)
return 0;
buffer += 3;
while (isspace(*buffer))
buffer++;
/* Check if 'feature' is present in the buffer as a separate word */
while ((p = strstr(buffer, feature))) {
if (p > buffer && !isspace(*(p - 1))) {
buffer++;
continue;
}
p += strlen(feature);
if (*p != 0 && !isspace(*p)) {
buffer++;
continue;
}
return 1;
}
return 0;
}
LOCAL(int)
parse_proc_cpuinfo(int bufsize)
{
char *buffer = (char *)malloc(bufsize);
FILE *fd;
simd_support = 0;
if (!buffer)
return 0;
fd = fopen("/proc/cpuinfo", "r");
if (fd) {
while (fgets(buffer, bufsize, fd)) {
if (!strchr(buffer, '\n') && !feof(fd)) {
/* "impossible" happened - insufficient size of the buffer! */
fclose(fd);
free(buffer);
return 0;
}
if (check_feature(buffer, "altivec"))
simd_support |= JSIMD_ALTIVEC;
}
fclose(fd);
}
free(buffer);
return 1;
}
#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 !defined(__ALTIVEC__) && (defined(__linux__) || defined(ANDROID) || defined(__ANDROID__))
int bufsize = 1024; /* an initial guess for the line buffer size limit */
#elif defined(__amigaos4__)
uint32 altivec = 0;
#elif defined(__OpenBSD__)
int mib[2] = { CTL_MACHDEP, CPU_ALTIVEC };
int altivec;
size_t len = sizeof(altivec);
#endif
if (simd_support != ~0U)
return;
simd_support = 0;
#if defined(__ALTIVEC__) || defined(__APPLE__)
simd_support |= JSIMD_ALTIVEC;
#elif defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
while (!parse_proc_cpuinfo(bufsize)) {
bufsize *= 2;
if (bufsize > SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT)
break;
}
#elif defined(__amigaos4__)
IExec->GetCPUInfoTags(GCIT_VectorUnit, &altivec, TAG_DONE);
if (altivec == VECTORTYPE_ALTIVEC)
simd_support |= JSIMD_ALTIVEC;
#elif defined(__OpenBSD__)
if (sysctl(mib, 2, &altivec, &len, NULL, 0) == 0 && altivec != 0)
simd_support |= JSIMD_ALTIVEC;
#endif
#ifndef NO_GETENV
/* Force different settings through environment variables */
env = getenv("JSIMD_FORCEALTIVEC");
if ((env != NULL) && (strcmp(env, "1") == 0))
simd_support = JSIMD_ALTIVEC;
env = getenv("JSIMD_FORCENONE");
if ((env != NULL) && (strcmp(env, "1") == 0))
simd_support = 0;
#endif
}
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_ALTIVEC)
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_ALTIVEC)
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_ALTIVEC)
return 1;
return 0;
}
GLOBAL(int)
jsimd_can_ycc_rgb565(void)
{
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 (*altivecfct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
switch (cinfo->in_color_space) {
case JCS_EXT_RGB:
altivecfct = jsimd_extrgb_ycc_convert_altivec;
break;
case JCS_EXT_RGBX:
case JCS_EXT_RGBA:
altivecfct = jsimd_extrgbx_ycc_convert_altivec;
break;
case JCS_EXT_BGR:
altivecfct = jsimd_extbgr_ycc_convert_altivec;
break;
case JCS_EXT_BGRX:
case JCS_EXT_BGRA:
altivecfct = jsimd_extbgrx_ycc_convert_altivec;
break;
case JCS_EXT_XBGR:
case JCS_EXT_ABGR:
altivecfct = jsimd_extxbgr_ycc_convert_altivec;
break;
case JCS_EXT_XRGB:
case JCS_EXT_ARGB:
altivecfct = jsimd_extxrgb_ycc_convert_altivec;
break;
default:
altivecfct = jsimd_rgb_ycc_convert_altivec;
break;
}
altivecfct(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 (*altivecfct) (JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
switch (cinfo->in_color_space) {
case JCS_EXT_RGB:
altivecfct = jsimd_extrgb_gray_convert_altivec;
break;
case JCS_EXT_RGBX:
case JCS_EXT_RGBA:
altivecfct = jsimd_extrgbx_gray_convert_altivec;
break;
case JCS_EXT_BGR:
altivecfct = jsimd_extbgr_gray_convert_altivec;
break;
case JCS_EXT_BGRX:
case JCS_EXT_BGRA:
altivecfct = jsimd_extbgrx_gray_convert_altivec;
break;
case JCS_EXT_XBGR:
case JCS_EXT_ABGR:
altivecfct = jsimd_extxbgr_gray_convert_altivec;
break;
case JCS_EXT_XRGB:
case JCS_EXT_ARGB:
altivecfct = jsimd_extxrgb_gray_convert_altivec;
break;
default:
altivecfct = jsimd_rgb_gray_convert_altivec;
break;
}
altivecfct(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 (*altivecfct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int);
switch (cinfo->out_color_space) {
case JCS_EXT_RGB:
altivecfct = jsimd_ycc_extrgb_convert_altivec;
break;
case JCS_EXT_RGBX:
case JCS_EXT_RGBA:
altivecfct = jsimd_ycc_extrgbx_convert_altivec;
break;
case JCS_EXT_BGR:
altivecfct = jsimd_ycc_extbgr_convert_altivec;
break;
case JCS_EXT_BGRX:
case JCS_EXT_BGRA:
altivecfct = jsimd_ycc_extbgrx_convert_altivec;
break;
case JCS_EXT_XBGR:
case JCS_EXT_ABGR:
altivecfct = jsimd_ycc_extxbgr_convert_altivec;
break;
case JCS_EXT_XRGB:
case JCS_EXT_ARGB:
altivecfct = jsimd_ycc_extxrgb_convert_altivec;
break;
default:
altivecfct = jsimd_ycc_rgb_convert_altivec;
break;
}
altivecfct(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(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_ALTIVEC)
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_ALTIVEC)
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_altivec(cinfo->image_width, cinfo->max_v_samp_factor,
compptr->v_samp_factor,
compptr->width_in_blocks, input_data,
output_data);
}
GLOBAL(void)
jsimd_h2v1_downsample(j_compress_ptr cinfo, jpeg_component_info *compptr,
JSAMPARRAY input_data, JSAMPARRAY output_data)
{
jsimd_h2v1_downsample_altivec(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_ALTIVEC)
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_ALTIVEC)
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_altivec(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_altivec(cinfo->max_v_samp_factor, cinfo->output_width,
input_data, output_data_ptr);
}
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_ALTIVEC)
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_ALTIVEC)
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_altivec(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_altivec(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_ALTIVEC)
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_ALTIVEC)
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 (*altivecfct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
switch (cinfo->out_color_space) {
case JCS_EXT_RGB:
altivecfct = jsimd_h2v2_extrgb_merged_upsample_altivec;
break;
case JCS_EXT_RGBX:
case JCS_EXT_RGBA:
altivecfct = jsimd_h2v2_extrgbx_merged_upsample_altivec;
break;
case JCS_EXT_BGR:
altivecfct = jsimd_h2v2_extbgr_merged_upsample_altivec;
break;
case JCS_EXT_BGRX:
case JCS_EXT_BGRA:
altivecfct = jsimd_h2v2_extbgrx_merged_upsample_altivec;
break;
case JCS_EXT_XBGR:
case JCS_EXT_ABGR:
altivecfct = jsimd_h2v2_extxbgr_merged_upsample_altivec;
break;
case JCS_EXT_XRGB:
case JCS_EXT_ARGB:
altivecfct = jsimd_h2v2_extxrgb_merged_upsample_altivec;
break;
default:
altivecfct = jsimd_h2v2_merged_upsample_altivec;
break;
}
altivecfct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf);
}
GLOBAL(void)
jsimd_h2v1_merged_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf)
{
void (*altivecfct) (JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
switch (cinfo->out_color_space) {
case JCS_EXT_RGB:
altivecfct = jsimd_h2v1_extrgb_merged_upsample_altivec;
break;
case JCS_EXT_RGBX:
case JCS_EXT_RGBA:
altivecfct = jsimd_h2v1_extrgbx_merged_upsample_altivec;
break;
case JCS_EXT_BGR:
altivecfct = jsimd_h2v1_extbgr_merged_upsample_altivec;
break;
case JCS_EXT_BGRX:
case JCS_EXT_BGRA:
altivecfct = jsimd_h2v1_extbgrx_merged_upsample_altivec;
break;
case JCS_EXT_XBGR:
case JCS_EXT_ABGR:
altivecfct = jsimd_h2v1_extxbgr_merged_upsample_altivec;
break;
case JCS_EXT_XRGB:
case JCS_EXT_ARGB:
altivecfct = jsimd_h2v1_extxrgb_merged_upsample_altivec;
break;
default:
altivecfct = jsimd_h2v1_merged_upsample_altivec;
break;
}
altivecfct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf);
}
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_ALTIVEC)
return 1;
return 0;
}
GLOBAL(int)
jsimd_can_convsamp_float(void)
{
return 0;
}
GLOBAL(void)
jsimd_convsamp(JSAMPARRAY sample_data, JDIMENSION start_col,
DCTELEM *workspace)
{
jsimd_convsamp_altivec(sample_data, start_col, workspace);
}
GLOBAL(void)
jsimd_convsamp_float(JSAMPARRAY sample_data, JDIMENSION start_col,
FAST_FLOAT *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_ALTIVEC)
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_ALTIVEC)
return 1;
return 0;
}
GLOBAL(int)
jsimd_can_fdct_float(void)
{
return 0;
}
GLOBAL(void)
jsimd_fdct_islow(DCTELEM *data)
{
jsimd_fdct_islow_altivec(data);
}
GLOBAL(void)
jsimd_fdct_ifast(DCTELEM *data)
{
jsimd_fdct_ifast_altivec(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_ALTIVEC)
return 1;
return 0;
}
GLOBAL(int)
jsimd_can_quantize_float(void)
{
return 0;
}
GLOBAL(void)
jsimd_quantize(JCOEFPTR coef_block, DCTELEM *divisors, DCTELEM *workspace)
{
jsimd_quantize_altivec(coef_block, divisors, workspace);
}
GLOBAL(void)
jsimd_quantize_float(JCOEFPTR coef_block, FAST_FLOAT *divisors,
FAST_FLOAT *workspace)
{
}
GLOBAL(int)
jsimd_can_idct_2x2(void)
{
return 0;
}
GLOBAL(int)
jsimd_can_idct_4x4(void)
{
return 0;
}
GLOBAL(void)
jsimd_idct_2x2(j_decompress_ptr cinfo, jpeg_component_info *compptr,
JCOEFPTR coef_block, JSAMPARRAY output_buf,
JDIMENSION output_col)
{
}
GLOBAL(void)
jsimd_idct_4x4(j_decompress_ptr cinfo, jpeg_component_info *compptr,
JCOEFPTR coef_block, JSAMPARRAY output_buf,
JDIMENSION output_col)
{
}
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 (simd_support & JSIMD_ALTIVEC)
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 (simd_support & JSIMD_ALTIVEC)
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)
{
jsimd_idct_islow_altivec(compptr->dct_table, coef_block, output_buf,
output_col);
}
GLOBAL(void)
jsimd_idct_ifast(j_decompress_ptr cinfo, jpeg_component_info *compptr,
JCOEFPTR coef_block, JSAMPARRAY output_buf,
JDIMENSION output_col)
{
jsimd_idct_ifast_altivec(compptr->dct_table, coef_block, output_buf,
output_col);
}
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, JCOEF *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, JCOEF *absvalues, size_t *bits)
{
return 0;
}