kc3-lang/libjpeg-turbo/simd/jsimd_mips.c
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Hash : 9055fb40
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Date : 2016-07-07T13:10:30
ARM/MIPS: Change the behavior of JSIMD_FORCE* The JSIMD_FORCE* environment variables previously meant "force the use of this instruction set if it is available but others are available as well", but that did nothing on ARM platforms, since there is only ever one instruction set available. Since the ARM and MIPS CPU feature detection code is less than bulletproof, and since there is only one SIMD instruction set (currently) supported on those platforms, it makes sense for the JSIMD_FORCE* environment variables on those platforms to actually force the use of the SIMD instruction set, thus bypassing the CPU feature detection code. This addresses a concern raised in #88 whereby parsing /proc/cpuinfo didn't work within a QEMU environment. This at least provides a workaround, allowing users to force-enable or force-disable SIMD instructions for ARM and MIPS builds of libjpeg-turbo.
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simd/jsimd_mips.c
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/* * jsimd_mips.c * * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB * Copyright (C) 2009-2011, 2014, 2016, D. R. Commander. * Copyright (C) 2013-2014, MIPS Technologies, Inc., California. * Copyright (C) 2015, Matthieu Darbois. * * Based on the x86 SIMD extension for IJG JPEG library, * Copyright (C) 1999-2006, MIYASAKA Masaru. * For conditions of distribution and use, see copyright notice in jsimdext.inc * * This file contains the interface between the "normal" portions * of the library and the SIMD implementations when running on a * MIPS architecture. */ #define JPEG_INTERNALS #include "../jinclude.h" #include "../jpeglib.h" #include "../jsimd.h" #include "../jdct.h" #include "../jsimddct.h" #include "jsimd.h" #include <stdio.h> #include <string.h> #include <ctype.h> static unsigned int simd_support = ~0; #if defined(__linux__) LOCAL(int) parse_proc_cpuinfo(const char* search_string) { const char* file_name = "/proc/cpuinfo"; char cpuinfo_line[256]; FILE* f = NULL; simd_support = 0; if ((f = fopen(file_name, "r")) != NULL) { while (fgets(cpuinfo_line, sizeof(cpuinfo_line), f) != NULL) { if (strstr(cpuinfo_line, search_string) != NULL) { fclose(f); simd_support |= JSIMD_MIPS_DSPR2; return 1; } } fclose(f); } /* Did not find string in the proc file, or not Linux ELF. */ return 0; } #endif /* * Check what SIMD accelerations are supported. * * FIXME: This code is racy under a multi-threaded environment. */ LOCAL(void) init_simd (void) { if (simd_support != ~0U) return; simd_support = 0; #if defined(__MIPSEL__) && defined(__mips_dsp) && (__mips_dsp_rev >= 2) simd_support |= JSIMD_MIPS_DSPR2; #elif defined(__linux__) /* We still have a chance to use MIPS DSPR2 regardless of globally used * -mdspr2 options passed to gcc by performing runtime detection via * /proc/cpuinfo parsing on linux */ if (!parse_proc_cpuinfo("MIPS 74K")) return; #endif /* Force different settings through environment variables */ env = getenv("JSIMD_FORCEDSPR2"); if ((env != NULL) && (strcmp(env, "1") == 0)) simd_support = JSIMD_MIPS_DSPR2; env = getenv("JSIMD_FORCENONE"); if ((env != NULL) && (strcmp(env, "1") == 0)) simd_support = 0; } static const int mips_idct_ifast_coefs[4] = { 0x45404540, // FIX( 1.082392200 / 2) = 17734 = 0x4546 0x5A805A80, // FIX( 1.414213562 / 2) = 23170 = 0x5A82 0x76407640, // FIX( 1.847759065 / 2) = 30274 = 0x7642 0xAC60AC60 // FIX(-2.613125930 / 4) = -21407 = 0xAC61 }; /* The following struct is borrowed from jdsample.c */ typedef void (*upsample1_ptr) (j_decompress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr); typedef struct { struct jpeg_upsampler pub; JSAMPARRAY color_buf[MAX_COMPONENTS]; upsample1_ptr methods[MAX_COMPONENTS]; int next_row_out; JDIMENSION rows_to_go; int rowgroup_height[MAX_COMPONENTS]; UINT8 h_expand[MAX_COMPONENTS]; UINT8 v_expand[MAX_COMPONENTS]; } my_upsampler; typedef my_upsampler *my_upsample_ptr; GLOBAL(int) jsimd_can_rgb_ycc (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4)) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(int) jsimd_can_rgb_gray (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4)) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(int) jsimd_can_ycc_rgb (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4)) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(int) jsimd_can_ycc_rgb565 (void) { return 0; } GLOBAL(int) jsimd_c_can_null_convert (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(void) jsimd_rgb_ycc_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) { void (*mipsdspr2fct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int); switch(cinfo->in_color_space) { case JCS_EXT_RGB: mipsdspr2fct=jsimd_extrgb_ycc_convert_mips_dspr2; break; case JCS_EXT_RGBX: case JCS_EXT_RGBA: mipsdspr2fct=jsimd_extrgbx_ycc_convert_mips_dspr2; break; case JCS_EXT_BGR: mipsdspr2fct=jsimd_extbgr_ycc_convert_mips_dspr2; break; case JCS_EXT_BGRX: case JCS_EXT_BGRA: mipsdspr2fct=jsimd_extbgrx_ycc_convert_mips_dspr2; break; case JCS_EXT_XBGR: case JCS_EXT_ABGR: mipsdspr2fct=jsimd_extxbgr_ycc_convert_mips_dspr2; break; case JCS_EXT_XRGB: case JCS_EXT_ARGB: mipsdspr2fct=jsimd_extxrgb_ycc_convert_mips_dspr2; break; default: mipsdspr2fct=jsimd_extrgb_ycc_convert_mips_dspr2; break; } if (simd_support & JSIMD_MIPS_DSPR2) mipsdspr2fct(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 (*mipsdspr2fct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int); switch(cinfo->in_color_space) { case JCS_EXT_RGB: mipsdspr2fct=jsimd_extrgb_gray_convert_mips_dspr2; break; case JCS_EXT_RGBX: case JCS_EXT_RGBA: mipsdspr2fct=jsimd_extrgbx_gray_convert_mips_dspr2; break; case JCS_EXT_BGR: mipsdspr2fct=jsimd_extbgr_gray_convert_mips_dspr2; break; case JCS_EXT_BGRX: case JCS_EXT_BGRA: mipsdspr2fct=jsimd_extbgrx_gray_convert_mips_dspr2; break; case JCS_EXT_XBGR: case JCS_EXT_ABGR: mipsdspr2fct=jsimd_extxbgr_gray_convert_mips_dspr2; break; case JCS_EXT_XRGB: case JCS_EXT_ARGB: mipsdspr2fct=jsimd_extxrgb_gray_convert_mips_dspr2; break; default: mipsdspr2fct=jsimd_extrgb_gray_convert_mips_dspr2; break; } if (simd_support & JSIMD_MIPS_DSPR2) mipsdspr2fct(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 (*mipsdspr2fct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int); switch(cinfo->out_color_space) { case JCS_EXT_RGB: mipsdspr2fct=jsimd_ycc_extrgb_convert_mips_dspr2; break; case JCS_EXT_RGBX: case JCS_EXT_RGBA: mipsdspr2fct=jsimd_ycc_extrgbx_convert_mips_dspr2; break; case JCS_EXT_BGR: mipsdspr2fct=jsimd_ycc_extbgr_convert_mips_dspr2; break; case JCS_EXT_BGRX: case JCS_EXT_BGRA: mipsdspr2fct=jsimd_ycc_extbgrx_convert_mips_dspr2; break; case JCS_EXT_XBGR: case JCS_EXT_ABGR: mipsdspr2fct=jsimd_ycc_extxbgr_convert_mips_dspr2; break; case JCS_EXT_XRGB: case JCS_EXT_ARGB: mipsdspr2fct=jsimd_ycc_extxrgb_convert_mips_dspr2; break; default: mipsdspr2fct=jsimd_ycc_extrgb_convert_mips_dspr2; break; } if (simd_support & JSIMD_MIPS_DSPR2) mipsdspr2fct(cinfo->output_width, input_buf, input_row, output_buf, num_rows); } GLOBAL(void) jsimd_ycc_rgb565_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) { } GLOBAL(void) jsimd_c_null_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) { if (simd_support & JSIMD_MIPS_DSPR2) jsimd_c_null_convert_mips_dspr2(cinfo->image_width, input_buf, output_buf, output_row, num_rows, cinfo->num_components); } GLOBAL(int) jsimd_can_h2v2_downsample (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(int) jsimd_can_h2v2_smooth_downsample (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if(DCTSIZE != 8) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(int) jsimd_can_h2v1_downsample (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(void) jsimd_h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data) { if (simd_support & JSIMD_MIPS_DSPR2) jsimd_h2v2_downsample_mips_dspr2(cinfo->image_width, cinfo->max_v_samp_factor, compptr->v_samp_factor, compptr->width_in_blocks, input_data, output_data); } GLOBAL(void) jsimd_h2v2_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data) { jsimd_h2v2_smooth_downsample_mips_dspr2(input_data, output_data, compptr->v_samp_factor, cinfo->max_v_samp_factor, cinfo->smoothing_factor, compptr->width_in_blocks, cinfo->image_width); } GLOBAL(void) jsimd_h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data) { if (simd_support & JSIMD_MIPS_DSPR2) jsimd_h2v1_downsample_mips_dspr2(cinfo->image_width, cinfo->max_v_samp_factor, compptr->v_samp_factor, compptr->width_in_blocks, input_data, output_data); } GLOBAL(int) jsimd_can_h2v2_upsample (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(int) jsimd_can_h2v1_upsample (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(int) jsimd_can_int_upsample (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(void) jsimd_h2v2_upsample (j_decompress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr) { if (simd_support & JSIMD_MIPS_DSPR2) jsimd_h2v2_upsample_mips_dspr2(cinfo->max_v_samp_factor, cinfo->output_width, input_data, output_data_ptr); } GLOBAL(void) jsimd_h2v1_upsample (j_decompress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr) { if (simd_support & JSIMD_MIPS_DSPR2) jsimd_h2v1_upsample_mips_dspr2(cinfo->max_v_samp_factor, cinfo->output_width, input_data, output_data_ptr); } GLOBAL(void) jsimd_int_upsample (j_decompress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr) { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; jsimd_int_upsample_mips_dspr2(upsample->h_expand[compptr->component_index], upsample->v_expand[compptr->component_index], input_data, output_data_ptr, cinfo->output_width, cinfo->max_v_samp_factor); } GLOBAL(int) jsimd_can_h2v2_fancy_upsample (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(int) jsimd_can_h2v1_fancy_upsample (void) { init_simd(); /* The code is optimised for these values only */ if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(void) jsimd_h2v2_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr) { if (simd_support & JSIMD_MIPS_DSPR2) jsimd_h2v2_fancy_upsample_mips_dspr2(cinfo->max_v_samp_factor, compptr->downsampled_width, input_data, output_data_ptr); } GLOBAL(void) jsimd_h2v1_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr) { if (simd_support & JSIMD_MIPS_DSPR2) jsimd_h2v1_fancy_upsample_mips_dspr2(cinfo->max_v_samp_factor, compptr->downsampled_width, input_data, output_data_ptr); } GLOBAL(int) jsimd_can_h2v2_merged_upsample (void) { init_simd(); if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(int) jsimd_can_h2v1_merged_upsample (void) { init_simd(); if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(void) jsimd_h2v2_merged_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf) { void (*mipsdspr2fct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, JSAMPLE *); switch(cinfo->out_color_space) { case JCS_EXT_RGB: mipsdspr2fct=jsimd_h2v2_extrgb_merged_upsample_mips_dspr2; break; case JCS_EXT_RGBX: case JCS_EXT_RGBA: mipsdspr2fct=jsimd_h2v2_extrgbx_merged_upsample_mips_dspr2; break; case JCS_EXT_BGR: mipsdspr2fct=jsimd_h2v2_extbgr_merged_upsample_mips_dspr2; break; case JCS_EXT_BGRX: case JCS_EXT_BGRA: mipsdspr2fct=jsimd_h2v2_extbgrx_merged_upsample_mips_dspr2; break; case JCS_EXT_XBGR: case JCS_EXT_ABGR: mipsdspr2fct=jsimd_h2v2_extxbgr_merged_upsample_mips_dspr2; break; case JCS_EXT_XRGB: case JCS_EXT_ARGB: mipsdspr2fct=jsimd_h2v2_extxrgb_merged_upsample_mips_dspr2; break; default: mipsdspr2fct=jsimd_h2v2_extrgb_merged_upsample_mips_dspr2; break; } mipsdspr2fct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf, cinfo->sample_range_limit); } GLOBAL(void) jsimd_h2v1_merged_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf) { void (*mipsdspr2fct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, JSAMPLE *); switch(cinfo->out_color_space) { case JCS_EXT_RGB: mipsdspr2fct=jsimd_h2v1_extrgb_merged_upsample_mips_dspr2; break; case JCS_EXT_RGBX: case JCS_EXT_RGBA: mipsdspr2fct=jsimd_h2v1_extrgbx_merged_upsample_mips_dspr2; break; case JCS_EXT_BGR: mipsdspr2fct=jsimd_h2v1_extbgr_merged_upsample_mips_dspr2; break; case JCS_EXT_BGRX: case JCS_EXT_BGRA: mipsdspr2fct=jsimd_h2v1_extbgrx_merged_upsample_mips_dspr2; break; case JCS_EXT_XBGR: case JCS_EXT_ABGR: mipsdspr2fct=jsimd_h2v1_extxbgr_merged_upsample_mips_dspr2; break; case JCS_EXT_XRGB: case JCS_EXT_ARGB: mipsdspr2fct=jsimd_h2v1_extxrgb_merged_upsample_mips_dspr2; break; default: mipsdspr2fct=jsimd_h2v1_extrgb_merged_upsample_mips_dspr2; break; } mipsdspr2fct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf, cinfo->sample_range_limit); } GLOBAL(int) jsimd_can_convsamp (void) { init_simd(); /* The code is optimised for these values only */ if (DCTSIZE != 8) return 0; if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (sizeof(DCTELEM) != 2) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(int) jsimd_can_convsamp_float (void) { init_simd(); /* The code is optimised for these values only */ if (DCTSIZE != 8) return 0; if (sizeof(JCOEF) != 2) return 0; if (BITS_IN_JSAMPLE != 8) return 0; if (sizeof(JDIMENSION) != 4) return 0; if (sizeof(ISLOW_MULT_TYPE) != 2) return 0; if (simd_support & JSIMD_MIPS_DSPR2) return 1; return 0; } GLOBAL(void) jsimd_convsamp (JSAMPARRAY sample_data, JDIMENSION start_col, DCTELEM *workspace) { if (simd_support & JSIMD_MIPS_DSPR2) 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) { init_simd(); 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) { 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_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) { init_simd(); return 0; } GLOBAL(void) jsimd_idct_islow (j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { if (simd_support & JSIMD_MIPS_DSPR2) { int output[8] = { (int)(output_buf[0] + output_col), (int)(output_buf[1] + output_col), (int)(output_buf[2] + output_col), (int)(output_buf[3] + output_col), (int)(output_buf[4] + output_col), (int)(output_buf[5] + output_col), (int)(output_buf[6] + output_col), (int)(output_buf[7] + output_col), }; jsimd_idct_islow_mips_dspr2(coef_block, compptr->dct_table, output, IDCT_range_limit(cinfo)); } } GLOBAL(void) jsimd_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { 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) { } 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; }