| /* |
| * jsimd_arm64.c |
| * |
| * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
| * Copyright 2009-2011, 2013-2014 D. R. Commander |
| * |
| * 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 |
| * 64-bit ARM 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__) || defined(ANDROID) || defined(__ANDROID__) |
| |
| #define SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT (1024 * 1024) |
| |
| LOCAL(int) |
| check_feature (char *buffer, char *feature) |
| { |
| char *p; |
| if (*feature == 0) |
| return 0; |
| if (strncmp(buffer, "Features", 8) != 0) |
| return 0; |
| buffer += 8; |
| while (isspace(*buffer)) |
| buffer++; |
| |
| /* Check if 'feature' is present in the buffer as a separate word */ |
| while ((p = strstr(buffer, feature))) { |
| if (p > buffer && !isspace(*(p - 1))) { |
| buffer++; |
| continue; |
| } |
| p += strlen(feature); |
| if (*p != 0 && !isspace(*p)) { |
| buffer++; |
| continue; |
| } |
| return 1; |
| } |
| return 0; |
| } |
| |
| LOCAL(int) |
| parse_proc_cpuinfo (int bufsize) |
| { |
| char *buffer = (char *)malloc(bufsize); |
| FILE *fd; |
| simd_support = 0; |
| |
| if (!buffer) |
| return 0; |
| |
| fd = fopen("/proc/cpuinfo", "r"); |
| if (fd) { |
| while (fgets(buffer, bufsize, fd)) { |
| if (!strchr(buffer, '\n') && !feof(fd)) { |
| /* "impossible" happened - insufficient size of the buffer! */ |
| fclose(fd); |
| free(buffer); |
| return 0; |
| } |
| if (check_feature(buffer, "neon")) |
| simd_support |= JSIMD_ARM_NEON; |
| } |
| fclose(fd); |
| } |
| free(buffer); |
| return 1; |
| } |
| |
| #endif |
| |
| /* |
| * Check what SIMD accelerations are supported. |
| * |
| * FIXME: This code is racy under a multi-threaded environment. |
| */ |
| LOCAL(void) |
| init_simd (void) |
| { |
| char *env = NULL; |
| #if !defined(__ARM_NEON__) && defined(__linux__) || defined(ANDROID) || defined(__ANDROID__) |
| int bufsize = 1024; /* an initial guess for the line buffer size limit */ |
| #endif |
| |
| if (simd_support != ~0U) |
| return; |
| |
| simd_support = 0; |
| |
| #if defined(__ARM_NEON__) |
| simd_support |= JSIMD_ARM_NEON; |
| #elif defined(__linux__) || defined(ANDROID) || defined(__ANDROID__) |
| /* We still have a chance to use NEON regardless of globally used |
| * -mcpu/-mfpu options passed to gcc by performing runtime detection via |
| * /proc/cpuinfo parsing on linux/android */ |
| while (!parse_proc_cpuinfo(bufsize)) { |
| bufsize *= 2; |
| if (bufsize > SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT) |
| break; |
| } |
| #endif |
| |
| /* Force different settings through environment variables */ |
| env = getenv("JSIMD_FORCENEON"); |
| if ((env != NULL) && (strcmp(env, "1") == 0)) |
| simd_support &= JSIMD_ARM_NEON; |
| env = getenv("JSIMD_FORCENONE"); |
| if ((env != NULL) && (strcmp(env, "1") == 0)) |
| simd_support = 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_rgb_ycc (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_rgb_gray (void) |
| { |
| init_simd(); |
| |
| 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_ARM_NEON) |
| 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) |
| { |
| } |
| |
| GLOBAL(void) |
| jsimd_rgb_gray_convert (j_compress_ptr cinfo, |
| JSAMPARRAY input_buf, JSAMPIMAGE output_buf, |
| JDIMENSION output_row, int 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 (*neonfct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int); |
| |
| switch(cinfo->out_color_space) { |
| case JCS_EXT_RGB: |
| neonfct=jsimd_ycc_extrgb_convert_neon; |
| break; |
| case JCS_EXT_RGBX: |
| case JCS_EXT_RGBA: |
| neonfct=jsimd_ycc_extrgbx_convert_neon; |
| break; |
| case JCS_EXT_BGR: |
| neonfct=jsimd_ycc_extbgr_convert_neon; |
| break; |
| case JCS_EXT_BGRX: |
| case JCS_EXT_BGRA: |
| neonfct=jsimd_ycc_extbgrx_convert_neon; |
| break; |
| case JCS_EXT_XBGR: |
| case JCS_EXT_ABGR: |
| neonfct=jsimd_ycc_extxbgr_convert_neon; |
| break; |
| case JCS_EXT_XRGB: |
| case JCS_EXT_ARGB: |
| neonfct=jsimd_ycc_extxrgb_convert_neon; |
| break; |
| default: |
| neonfct=jsimd_ycc_extrgb_convert_neon; |
| break; |
| } |
| |
| if (simd_support & JSIMD_ARM_NEON) |
| neonfct(cinfo->output_width, input_buf, input_row, output_buf, num_rows); |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v2_downsample (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v1_downsample (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, |
| JSAMPARRAY input_data, JSAMPARRAY output_data) |
| { |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, |
| JSAMPARRAY input_data, JSAMPARRAY output_data) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v2_upsample (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v1_upsample (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v2_upsample (j_decompress_ptr cinfo, |
| jpeg_component_info * compptr, |
| JSAMPARRAY input_data, |
| JSAMPARRAY * output_data_ptr) |
| { |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v1_upsample (j_decompress_ptr cinfo, |
| jpeg_component_info * compptr, |
| JSAMPARRAY input_data, |
| JSAMPARRAY * output_data_ptr) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v2_fancy_upsample (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v1_fancy_upsample (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v2_fancy_upsample (j_decompress_ptr cinfo, |
| jpeg_component_info * compptr, |
| JSAMPARRAY input_data, |
| JSAMPARRAY * output_data_ptr) |
| { |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v1_fancy_upsample (j_decompress_ptr cinfo, |
| jpeg_component_info * compptr, |
| JSAMPARRAY input_data, |
| JSAMPARRAY * output_data_ptr) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v2_merged_upsample (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v1_merged_upsample (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v2_merged_upsample (j_decompress_ptr cinfo, |
| JSAMPIMAGE input_buf, |
| JDIMENSION in_row_group_ctr, |
| JSAMPARRAY output_buf) |
| { |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v1_merged_upsample (j_decompress_ptr cinfo, |
| JSAMPIMAGE input_buf, |
| JDIMENSION in_row_group_ctr, |
| JSAMPARRAY output_buf) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_convsamp (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_convsamp_float (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_convsamp (JSAMPARRAY sample_data, JDIMENSION start_col, |
| DCTELEM * workspace) |
| { |
| } |
| |
| GLOBAL(void) |
| jsimd_convsamp_float (JSAMPARRAY sample_data, JDIMENSION start_col, |
| FAST_FLOAT * workspace) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_fdct_islow (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_fdct_ifast (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_fdct_float (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_fdct_islow (DCTELEM * data) |
| { |
| } |
| |
| GLOBAL(void) |
| jsimd_fdct_ifast (DCTELEM * data) |
| { |
| } |
| |
| GLOBAL(void) |
| jsimd_fdct_float (FAST_FLOAT * data) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_quantize (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_quantize_float (void) |
| { |
| init_simd(); |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_quantize (JCOEFPTR coef_block, DCTELEM * divisors, |
| DCTELEM * workspace) |
| { |
| } |
| |
| GLOBAL(void) |
| jsimd_quantize_float (JCOEFPTR coef_block, FAST_FLOAT * divisors, |
| FAST_FLOAT * 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_ARM_NEON) |
| 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_ARM_NEON) |
| 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_ARM_NEON) |
| jsimd_idct_2x2_neon(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_ARM_NEON) |
| jsimd_idct_4x4_neon(compptr->dct_table, coef_block, output_buf, |
| 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 (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| if (sizeof(ISLOW_MULT_TYPE) != 2) |
| return 0; |
| |
| if (simd_support & JSIMD_ARM_NEON) |
| 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_ARM_NEON) |
| 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_ARM_NEON) |
| jsimd_idct_islow_neon(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) |
| { |
| if (simd_support & JSIMD_ARM_NEON) |
| jsimd_idct_ifast_neon(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) |
| { |
| } |