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https://github.com/etlegacy/etlegacy-libs.git
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828 lines
18 KiB
C
828 lines
18 KiB
C
/*
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* jsimd_powerpc.c
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*
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* Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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* Copyright (C) 2009-2011, 2014-2016, D. R. Commander.
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* Copyright (C) 2015, Matthieu Darbois.
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*
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* Based on the x86 SIMD extension for IJG JPEG library,
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* Copyright (C) 1999-2006, MIYASAKA Masaru.
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* For conditions of distribution and use, see copyright notice in jsimdext.inc
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*
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* This file contains the interface between the "normal" portions
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* of the library and the SIMD implementations when running on a
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* PowerPC architecture.
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*/
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#define JPEG_INTERNALS
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#include "../jinclude.h"
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#include "../jpeglib.h"
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#include "../jsimd.h"
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#include "../jdct.h"
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#include "../jsimddct.h"
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#include "jsimd.h"
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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static unsigned int simd_support = ~0;
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#if defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
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#define SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT (1024 * 1024)
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LOCAL(int)
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check_feature (char *buffer, char *feature)
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{
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char *p;
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if (*feature == 0)
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return 0;
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if (strncmp(buffer, "cpu", 3) != 0)
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return 0;
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buffer += 3;
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while (isspace(*buffer))
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buffer++;
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/* Check if 'feature' is present in the buffer as a separate word */
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while ((p = strstr(buffer, feature))) {
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if (p > buffer && !isspace(*(p - 1))) {
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buffer++;
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continue;
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}
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p += strlen(feature);
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if (*p != 0 && !isspace(*p)) {
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buffer++;
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continue;
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}
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return 1;
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}
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return 0;
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}
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LOCAL(int)
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parse_proc_cpuinfo (int bufsize)
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{
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char *buffer = (char *)malloc(bufsize);
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FILE *fd;
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simd_support = 0;
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if (!buffer)
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return 0;
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fd = fopen("/proc/cpuinfo", "r");
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if (fd) {
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while (fgets(buffer, bufsize, fd)) {
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if (!strchr(buffer, '\n') && !feof(fd)) {
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/* "impossible" happened - insufficient size of the buffer! */
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fclose(fd);
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free(buffer);
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return 0;
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}
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if (check_feature(buffer, "altivec"))
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simd_support |= JSIMD_ALTIVEC;
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}
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fclose(fd);
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}
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free(buffer);
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return 1;
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}
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#endif
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/*
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* Check what SIMD accelerations are supported.
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*
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* FIXME: This code is racy under a multi-threaded environment.
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*/
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LOCAL(void)
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init_simd (void)
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{
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char *env = NULL;
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#if !defined(__ALTIVEC__) && (defined(__linux__) || defined(ANDROID) || defined(__ANDROID__))
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int bufsize = 1024; /* an initial guess for the line buffer size limit */
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#endif
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if (simd_support != ~0U)
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return;
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simd_support = 0;
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#if defined(__ALTIVEC__) || defined(__APPLE__)
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simd_support |= JSIMD_ALTIVEC;
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#elif defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
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while (!parse_proc_cpuinfo(bufsize)) {
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bufsize *= 2;
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if (bufsize > SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT)
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break;
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}
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#endif
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/* Force different settings through environment variables */
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env = getenv("JSIMD_FORCEALTIVEC");
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if ((env != NULL) && (strcmp(env, "1") == 0))
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simd_support = JSIMD_ALTIVEC;
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env = getenv("JSIMD_FORCENONE");
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if ((env != NULL) && (strcmp(env, "1") == 0))
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simd_support = 0;
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}
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GLOBAL(int)
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jsimd_can_rgb_ycc (void)
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{
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init_simd();
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/* The code is optimised for these values only */
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if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))
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return 0;
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
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GLOBAL(int)
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jsimd_can_rgb_gray (void)
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{
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init_simd();
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/* The code is optimised for these values only */
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if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))
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return 0;
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
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GLOBAL(int)
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jsimd_can_ycc_rgb (void)
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{
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init_simd();
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/* The code is optimised for these values only */
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if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))
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return 0;
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
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GLOBAL(int)
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jsimd_can_ycc_rgb565 (void)
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{
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return 0;
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}
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GLOBAL(void)
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jsimd_rgb_ycc_convert (j_compress_ptr cinfo,
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JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
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JDIMENSION output_row, int num_rows)
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{
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void (*altivecfct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
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switch(cinfo->in_color_space) {
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case JCS_EXT_RGB:
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altivecfct=jsimd_extrgb_ycc_convert_altivec;
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break;
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case JCS_EXT_RGBX:
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case JCS_EXT_RGBA:
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altivecfct=jsimd_extrgbx_ycc_convert_altivec;
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break;
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case JCS_EXT_BGR:
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altivecfct=jsimd_extbgr_ycc_convert_altivec;
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break;
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case JCS_EXT_BGRX:
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case JCS_EXT_BGRA:
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altivecfct=jsimd_extbgrx_ycc_convert_altivec;
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break;
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case JCS_EXT_XBGR:
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case JCS_EXT_ABGR:
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altivecfct=jsimd_extxbgr_ycc_convert_altivec;
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break;
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case JCS_EXT_XRGB:
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case JCS_EXT_ARGB:
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altivecfct=jsimd_extxrgb_ycc_convert_altivec;
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break;
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default:
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altivecfct=jsimd_rgb_ycc_convert_altivec;
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break;
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}
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altivecfct(cinfo->image_width, input_buf, output_buf, output_row, num_rows);
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}
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GLOBAL(void)
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jsimd_rgb_gray_convert (j_compress_ptr cinfo,
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JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
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JDIMENSION output_row, int num_rows)
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{
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void (*altivecfct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
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switch(cinfo->in_color_space) {
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case JCS_EXT_RGB:
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altivecfct=jsimd_extrgb_gray_convert_altivec;
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break;
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case JCS_EXT_RGBX:
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case JCS_EXT_RGBA:
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altivecfct=jsimd_extrgbx_gray_convert_altivec;
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break;
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case JCS_EXT_BGR:
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altivecfct=jsimd_extbgr_gray_convert_altivec;
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break;
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case JCS_EXT_BGRX:
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case JCS_EXT_BGRA:
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altivecfct=jsimd_extbgrx_gray_convert_altivec;
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break;
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case JCS_EXT_XBGR:
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case JCS_EXT_ABGR:
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altivecfct=jsimd_extxbgr_gray_convert_altivec;
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break;
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case JCS_EXT_XRGB:
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case JCS_EXT_ARGB:
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altivecfct=jsimd_extxrgb_gray_convert_altivec;
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break;
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default:
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altivecfct=jsimd_rgb_gray_convert_altivec;
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break;
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}
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altivecfct(cinfo->image_width, input_buf, output_buf, output_row, num_rows);
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}
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GLOBAL(void)
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jsimd_ycc_rgb_convert (j_decompress_ptr cinfo,
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JSAMPIMAGE input_buf, JDIMENSION input_row,
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JSAMPARRAY output_buf, int num_rows)
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{
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void (*altivecfct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int);
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switch(cinfo->out_color_space) {
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case JCS_EXT_RGB:
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altivecfct=jsimd_ycc_extrgb_convert_altivec;
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break;
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case JCS_EXT_RGBX:
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case JCS_EXT_RGBA:
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altivecfct=jsimd_ycc_extrgbx_convert_altivec;
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break;
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case JCS_EXT_BGR:
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altivecfct=jsimd_ycc_extbgr_convert_altivec;
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break;
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case JCS_EXT_BGRX:
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case JCS_EXT_BGRA:
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altivecfct=jsimd_ycc_extbgrx_convert_altivec;
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break;
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case JCS_EXT_XBGR:
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case JCS_EXT_ABGR:
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altivecfct=jsimd_ycc_extxbgr_convert_altivec;
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break;
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case JCS_EXT_XRGB:
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case JCS_EXT_ARGB:
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altivecfct=jsimd_ycc_extxrgb_convert_altivec;
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break;
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default:
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altivecfct=jsimd_ycc_rgb_convert_altivec;
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break;
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}
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altivecfct(cinfo->output_width, input_buf, input_row, output_buf, num_rows);
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}
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GLOBAL(void)
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jsimd_ycc_rgb565_convert (j_decompress_ptr cinfo,
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JSAMPIMAGE input_buf, JDIMENSION input_row,
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JSAMPARRAY output_buf, int num_rows)
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{
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}
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GLOBAL(int)
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jsimd_can_h2v2_downsample (void)
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{
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init_simd();
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/* The code is optimised for these values only */
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if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
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GLOBAL(int)
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jsimd_can_h2v1_downsample (void)
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{
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init_simd();
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/* The code is optimised for these values only */
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if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
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GLOBAL(void)
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jsimd_h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr,
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JSAMPARRAY input_data, JSAMPARRAY output_data)
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{
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jsimd_h2v2_downsample_altivec(cinfo->image_width, cinfo->max_v_samp_factor,
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compptr->v_samp_factor,
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compptr->width_in_blocks,
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input_data, output_data);
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}
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GLOBAL(void)
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jsimd_h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr,
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JSAMPARRAY input_data, JSAMPARRAY output_data)
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{
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jsimd_h2v1_downsample_altivec(cinfo->image_width, cinfo->max_v_samp_factor,
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compptr->v_samp_factor,
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compptr->width_in_blocks,
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input_data, output_data);
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}
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GLOBAL(int)
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jsimd_can_h2v2_upsample (void)
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{
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init_simd();
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/* The code is optimised for these values only */
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if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
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GLOBAL(int)
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jsimd_can_h2v1_upsample (void)
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{
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init_simd();
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/* The code is optimised for these values only */
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if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
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GLOBAL(void)
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jsimd_h2v2_upsample (j_decompress_ptr cinfo,
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jpeg_component_info *compptr,
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JSAMPARRAY input_data,
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JSAMPARRAY *output_data_ptr)
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{
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jsimd_h2v2_upsample_altivec(cinfo->max_v_samp_factor, cinfo->output_width,
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input_data, output_data_ptr);
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}
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GLOBAL(void)
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jsimd_h2v1_upsample (j_decompress_ptr cinfo,
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jpeg_component_info *compptr,
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JSAMPARRAY input_data,
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JSAMPARRAY *output_data_ptr)
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{
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jsimd_h2v1_upsample_altivec(cinfo->max_v_samp_factor, cinfo->output_width,
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input_data, output_data_ptr);
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}
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GLOBAL(int)
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jsimd_can_h2v2_fancy_upsample (void)
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{
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init_simd();
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/* The code is optimised for these values only */
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if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
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GLOBAL(int)
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jsimd_can_h2v1_fancy_upsample (void)
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{
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init_simd();
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/* The code is optimised for these values only */
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if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
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GLOBAL(void)
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jsimd_h2v2_fancy_upsample (j_decompress_ptr cinfo,
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jpeg_component_info *compptr,
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JSAMPARRAY input_data,
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JSAMPARRAY *output_data_ptr)
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{
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jsimd_h2v2_fancy_upsample_altivec(cinfo->max_v_samp_factor,
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compptr->downsampled_width, input_data,
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output_data_ptr);
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}
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GLOBAL(void)
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jsimd_h2v1_fancy_upsample (j_decompress_ptr cinfo,
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jpeg_component_info *compptr,
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JSAMPARRAY input_data,
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JSAMPARRAY *output_data_ptr)
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{
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jsimd_h2v1_fancy_upsample_altivec(cinfo->max_v_samp_factor,
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compptr->downsampled_width, input_data,
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output_data_ptr);
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}
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GLOBAL(int)
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jsimd_can_h2v2_merged_upsample (void)
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{
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init_simd();
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|
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/* The code is optimised for these values only */
|
|
if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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|
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
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GLOBAL(int)
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jsimd_can_h2v1_merged_upsample (void)
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{
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init_simd();
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/* The code is optimised for these values only */
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if (BITS_IN_JSAMPLE != 8)
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return 0;
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if (sizeof(JDIMENSION) != 4)
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return 0;
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|
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if (simd_support & JSIMD_ALTIVEC)
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return 1;
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return 0;
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}
|
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|
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GLOBAL(void)
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jsimd_h2v2_merged_upsample (j_decompress_ptr cinfo,
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JSAMPIMAGE input_buf,
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JDIMENSION in_row_group_ctr,
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JSAMPARRAY output_buf)
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|
{
|
|
void (*altivecfct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
|
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|
|
switch(cinfo->out_color_space) {
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case JCS_EXT_RGB:
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altivecfct=jsimd_h2v2_extrgb_merged_upsample_altivec;
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break;
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case JCS_EXT_RGBX:
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case JCS_EXT_RGBA:
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altivecfct=jsimd_h2v2_extrgbx_merged_upsample_altivec;
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break;
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case JCS_EXT_BGR:
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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;
|
|
}
|