зеркало из https://github.com/mozilla/mozjpeg.git
858 строки
20 KiB
C
858 строки
20 KiB
C
/*
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* jsimd_mips.c
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*
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* Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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* Copyright 2009-2011 D. R. Commander
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* Copyright (C) 2013, MIPS Technologies, Inc., California
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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
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* MIPS architecture.
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*
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* Based on the stubs from 'jsimd_none.c'
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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__)
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LOCAL(int)
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parse_proc_cpuinfo(const char* search_string)
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{
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const char* file_name = "/proc/cpuinfo";
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char cpuinfo_line[256];
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FILE* f = NULL;
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simd_support = 0;
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if ((f = fopen(file_name, "r")) != NULL) {
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while (fgets(cpuinfo_line, sizeof(cpuinfo_line), f) != NULL) {
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if (strstr(cpuinfo_line, search_string) != NULL) {
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fclose(f);
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simd_support |= JSIMD_MIPS_DSPR2;
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return 1;
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}
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}
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fclose(f);
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}
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/* Did not find string in the proc file, or not Linux ELF. */
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return 0;
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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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if (simd_support != ~0U)
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return;
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simd_support = 0;
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#if defined(__mips__) && defined(__mips_dsp) && (__mips_dsp_rev >= 2)
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simd_support |= JSIMD_MIPS_DSPR2;
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#elif defined(__linux__)
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/* We still have a chance to use MIPS DSPR2 regardless of globally used
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* -mdspr2 options passed to gcc by performing runtime detection via
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* /proc/cpuinfo parsing on linux */
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if (!parse_proc_cpuinfo("MIPS 74K"))
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return;
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#endif
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}
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static const int mips_idct_ifast_coefs[4] = {
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0x45404540, // FIX( 1.082392200 / 2) = 17734 = 0x4546
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0x5A805A80, // FIX( 1.414213562 / 2) = 23170 = 0x5A82
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0x76407640, // FIX( 1.847759065 / 2) = 30274 = 0x7642
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0xAC60AC60 // FIX(-2.613125930 / 4) = -21407 = 0xAC61
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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_MIPS_DSPR2)
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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_MIPS_DSPR2)
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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_MIPS_DSPR2)
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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_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 (*mipsdspr2fct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
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switch(cinfo->in_color_space)
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{
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case JCS_EXT_RGB:
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mipsdspr2fct=jsimd_extrgb_ycc_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_extrgbx_ycc_convert_mips_dspr2;
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break;
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case JCS_EXT_BGR:
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mipsdspr2fct=jsimd_extbgr_ycc_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_extbgrx_ycc_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_extxbgr_ycc_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_extxrgb_ycc_convert_mips_dspr2;
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break;
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default:
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mipsdspr2fct=jsimd_extrgb_ycc_convert_mips_dspr2;
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break;
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}
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if (simd_support & JSIMD_MIPS_DSPR2)
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mipsdspr2fct(cinfo->image_width, input_buf,
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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 (*mipsdspr2fct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
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switch(cinfo->in_color_space)
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{
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case JCS_EXT_RGB:
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mipsdspr2fct=jsimd_extrgb_gray_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_extrgbx_gray_convert_mips_dspr2;
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break;
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case JCS_EXT_BGR:
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mipsdspr2fct=jsimd_extbgr_gray_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_extbgrx_gray_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_extxbgr_gray_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_extxrgb_gray_convert_mips_dspr2;
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break;
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default:
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mipsdspr2fct=jsimd_extrgb_gray_convert_mips_dspr2;
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break;
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}
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if (simd_support & JSIMD_MIPS_DSPR2)
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mipsdspr2fct(cinfo->image_width, input_buf,
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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 (*mipsdspr2fct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int);
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switch(cinfo->out_color_space)
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{
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case JCS_EXT_RGB:
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mipsdspr2fct=jsimd_ycc_extrgb_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_ycc_extrgbx_convert_mips_dspr2;
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break;
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case JCS_EXT_BGR:
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mipsdspr2fct=jsimd_ycc_extbgr_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_ycc_extbgrx_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_ycc_extxbgr_convert_mips_dspr2;
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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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mipsdspr2fct=jsimd_ycc_extxrgb_convert_mips_dspr2;
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break;
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default:
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mipsdspr2fct=jsimd_ycc_extrgb_convert_mips_dspr2;
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break;
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}
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if (simd_support & JSIMD_MIPS_DSPR2)
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mipsdspr2fct(cinfo->output_width, input_buf,
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input_row, output_buf, num_rows);
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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_MIPS_DSPR2)
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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_MIPS_DSPR2)
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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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if (simd_support & JSIMD_MIPS_DSPR2)
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jsimd_h2v2_downsample_mips_dspr2(cinfo->image_width,
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cinfo->max_v_samp_factor, compptr->v_samp_factor,
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compptr->width_in_blocks, 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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if (simd_support & JSIMD_MIPS_DSPR2)
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jsimd_h2v1_downsample_mips_dspr2(cinfo->image_width,
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cinfo->max_v_samp_factor, compptr->v_samp_factor,
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compptr->width_in_blocks, 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_MIPS_DSPR2)
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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_MIPS_DSPR2)
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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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if (simd_support & JSIMD_MIPS_DSPR2)
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jsimd_h2v2_upsample_mips_dspr2(cinfo->max_v_samp_factor,
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cinfo->output_width, 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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if (simd_support & JSIMD_MIPS_DSPR2)
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jsimd_h2v1_upsample_mips_dspr2(cinfo->max_v_samp_factor,
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cinfo->output_width, 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_MIPS_DSPR2)
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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_MIPS_DSPR2)
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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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if (simd_support & JSIMD_MIPS_DSPR2)
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jsimd_h2v2_fancy_upsample_mips_dspr2(cinfo->max_v_samp_factor,
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compptr->downsampled_width, input_data, 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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if (simd_support & JSIMD_MIPS_DSPR2)
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jsimd_h2v1_fancy_upsample_mips_dspr2(cinfo->max_v_samp_factor,
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compptr->downsampled_width, input_data, 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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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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return 0;
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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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{
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}
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GLOBAL(void)
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jsimd_h2v1_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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{
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}
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GLOBAL(int)
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jsimd_can_convsamp (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 (DCTSIZE != 8)
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return 0;
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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 (sizeof(DCTELEM) != 2)
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return 0;
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if (simd_support & JSIMD_MIPS_DSPR2)
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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_convsamp_float (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 (DCTSIZE != 8)
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return 0;
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if (sizeof(JCOEF) != 2)
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return 0;
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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 (sizeof(ISLOW_MULT_TYPE) != 2)
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return 0;
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if ((simd_support & JSIMD_MIPS_DSPR2))
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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_convsamp (JSAMPARRAY sample_data, JDIMENSION start_col,
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DCTELEM * workspace)
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{
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if (simd_support & JSIMD_MIPS_DSPR2)
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jsimd_convsamp_mips_dspr2(sample_data, start_col, workspace);
|
|
}
|
|
|
|
GLOBAL(void)
|
|
jsimd_convsamp_float (JSAMPARRAY sample_data, JDIMENSION start_col,
|
|
FAST_FLOAT * workspace)
|
|
{
|
|
if ((simd_support & JSIMD_MIPS_DSPR2))
|
|
jsimd_convsamp_float_mips_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_MIPS_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_MIPS_DSPR2)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
GLOBAL(int)
|
|
jsimd_can_fdct_float (void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
GLOBAL(void)
|
|
jsimd_fdct_islow (DCTELEM * data)
|
|
{
|
|
if (simd_support & JSIMD_MIPS_DSPR2)
|
|
jsimd_fdct_islow_mips_dspr2(data);
|
|
}
|
|
|
|
GLOBAL(void)
|
|
jsimd_fdct_ifast (DCTELEM * data)
|
|
{
|
|
if (simd_support & JSIMD_MIPS_DSPR2)
|
|
jsimd_fdct_ifast_mips_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_MIPS_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_MIPS_DSPR2))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
GLOBAL(void)
|
|
jsimd_quantize (JCOEFPTR coef_block, DCTELEM * divisors,
|
|
DCTELEM * workspace)
|
|
{
|
|
if (simd_support & JSIMD_MIPS_DSPR2)
|
|
jsimd_quantize_mips_dspr2(coef_block, divisors, workspace);
|
|
}
|
|
|
|
GLOBAL(void)
|
|
jsimd_quantize_float (JCOEFPTR coef_block, FAST_FLOAT * divisors,
|
|
FAST_FLOAT * workspace)
|
|
{
|
|
if ((simd_support & JSIMD_MIPS_DSPR2))
|
|
jsimd_quantize_float_mips_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_MIPS_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_MIPS_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_MIPS_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_MIPS_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)
|
|
{
|
|
if ((simd_support & JSIMD_MIPS_DSPR2))
|
|
jsimd_idct_2x2_mips_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)
|
|
{
|
|
if ((simd_support & JSIMD_MIPS_DSPR2))
|
|
{
|
|
int workspace[DCTSIZE*4]; /* buffers data between passes */
|
|
jsimd_idct_4x4_mips_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)
|
|
{
|
|
if ((simd_support & JSIMD_MIPS_DSPR2))
|
|
jsimd_idct_6x6_mips_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)
|
|
{
|
|
if (simd_support & JSIMD_MIPS_DSPR2) {
|
|
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_mips_dspr2(coef_block,
|
|
compptr->dct_table, workspace);
|
|
jsimd_idct_12x12_pass2_mips_dspr2(workspace, output);
|
|
}
|
|
}
|
|
|
|
GLOBAL(int)
|
|
jsimd_can_idct_islow (void)
|
|
{
|
|
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_MIPS_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)
|
|
{
|
|
}
|
|
|
|
GLOBAL(void)
|
|
jsimd_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info * compptr,
|
|
JCOEFPTR coef_block, JSAMPARRAY output_buf,
|
|
JDIMENSION output_col)
|
|
{
|
|
if (simd_support & JSIMD_MIPS_DSPR2) {
|
|
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_mips_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_mips_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)
|
|
{
|
|
}
|