| /* |
| * jsimd_powerpc.c |
| * |
| * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
| * Copyright (C) 2009-2011, 2014-2015, D. R. Commander. |
| * 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 |
| * PowerPC architecture. |
| */ |
| |
| #define JPEG_INTERNALS |
| #include "../jinclude.h" |
| #include "../jpeglib.h" |
| #include "../jsimd.h" |
| #include "../jdct.h" |
| #include "../jsimddct.h" |
| #include "jsimd.h" |
| |
| static unsigned int simd_support = ~0; |
| |
| LOCAL(void) |
| init_simd (void) |
| { |
| char *env = NULL; |
| |
| if (simd_support != ~0U) |
| return; |
| |
| simd_support = JSIMD_ALTIVEC; |
| |
| /* Force different settings through environment variables */ |
| env = getenv("JSIMD_FORCENONE"); |
| if ((env != NULL) && (strcmp(env, "1") == 0)) |
| simd_support = 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_rgb_ycc (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4)) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_rgb_gray (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4)) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_ycc_rgb (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4)) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_ycc_rgb565 (void) |
| { |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_rgb_ycc_convert (j_compress_ptr cinfo, |
| JSAMPARRAY input_buf, JSAMPIMAGE output_buf, |
| JDIMENSION output_row, int num_rows) |
| { |
| void (*altivecfct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int); |
| |
| switch(cinfo->in_color_space) { |
| case JCS_EXT_RGB: |
| altivecfct=jsimd_extrgb_ycc_convert_altivec; |
| break; |
| case JCS_EXT_RGBX: |
| case JCS_EXT_RGBA: |
| altivecfct=jsimd_extrgbx_ycc_convert_altivec; |
| break; |
| case JCS_EXT_BGR: |
| altivecfct=jsimd_extbgr_ycc_convert_altivec; |
| break; |
| case JCS_EXT_BGRX: |
| case JCS_EXT_BGRA: |
| altivecfct=jsimd_extbgrx_ycc_convert_altivec; |
| break; |
| case JCS_EXT_XBGR: |
| case JCS_EXT_ABGR: |
| altivecfct=jsimd_extxbgr_ycc_convert_altivec; |
| break; |
| case JCS_EXT_XRGB: |
| case JCS_EXT_ARGB: |
| altivecfct=jsimd_extxrgb_ycc_convert_altivec; |
| break; |
| default: |
| altivecfct=jsimd_rgb_ycc_convert_altivec; |
| break; |
| } |
| |
| altivecfct(cinfo->image_width, input_buf, output_buf, output_row, num_rows); |
| } |
| |
| GLOBAL(void) |
| jsimd_rgb_gray_convert (j_compress_ptr cinfo, |
| JSAMPARRAY input_buf, JSAMPIMAGE output_buf, |
| JDIMENSION output_row, int num_rows) |
| { |
| void (*altivecfct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int); |
| |
| switch(cinfo->in_color_space) { |
| case JCS_EXT_RGB: |
| altivecfct=jsimd_extrgb_gray_convert_altivec; |
| break; |
| case JCS_EXT_RGBX: |
| case JCS_EXT_RGBA: |
| altivecfct=jsimd_extrgbx_gray_convert_altivec; |
| break; |
| case JCS_EXT_BGR: |
| altivecfct=jsimd_extbgr_gray_convert_altivec; |
| break; |
| case JCS_EXT_BGRX: |
| case JCS_EXT_BGRA: |
| altivecfct=jsimd_extbgrx_gray_convert_altivec; |
| break; |
| case JCS_EXT_XBGR: |
| case JCS_EXT_ABGR: |
| altivecfct=jsimd_extxbgr_gray_convert_altivec; |
| break; |
| case JCS_EXT_XRGB: |
| case JCS_EXT_ARGB: |
| altivecfct=jsimd_extxrgb_gray_convert_altivec; |
| break; |
| default: |
| altivecfct=jsimd_rgb_gray_convert_altivec; |
| break; |
| } |
| |
| altivecfct(cinfo->image_width, input_buf, output_buf, output_row, num_rows); |
| } |
| |
| GLOBAL(void) |
| jsimd_ycc_rgb_convert (j_decompress_ptr cinfo, |
| JSAMPIMAGE input_buf, JDIMENSION input_row, |
| JSAMPARRAY output_buf, int num_rows) |
| { |
| void (*altivecfct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int); |
| |
| switch(cinfo->out_color_space) { |
| case JCS_EXT_RGB: |
| altivecfct=jsimd_ycc_extrgb_convert_altivec; |
| break; |
| case JCS_EXT_RGBX: |
| case JCS_EXT_RGBA: |
| altivecfct=jsimd_ycc_extrgbx_convert_altivec; |
| break; |
| case JCS_EXT_BGR: |
| altivecfct=jsimd_ycc_extbgr_convert_altivec; |
| break; |
| case JCS_EXT_BGRX: |
| case JCS_EXT_BGRA: |
| altivecfct=jsimd_ycc_extbgrx_convert_altivec; |
| break; |
| case JCS_EXT_XBGR: |
| case JCS_EXT_ABGR: |
| altivecfct=jsimd_ycc_extxbgr_convert_altivec; |
| break; |
| case JCS_EXT_XRGB: |
| case JCS_EXT_ARGB: |
| altivecfct=jsimd_ycc_extxrgb_convert_altivec; |
| break; |
| default: |
| altivecfct=jsimd_ycc_rgb_convert_altivec; |
| break; |
| } |
| |
| altivecfct(cinfo->output_width, input_buf, input_row, output_buf, num_rows); |
| } |
| |
| GLOBAL(void) |
| jsimd_ycc_rgb565_convert (j_decompress_ptr cinfo, |
| JSAMPIMAGE input_buf, JDIMENSION input_row, |
| JSAMPARRAY output_buf, int num_rows) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v2_downsample (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v1_downsample (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, |
| JSAMPARRAY input_data, JSAMPARRAY output_data) |
| { |
| jsimd_h2v2_downsample_altivec(cinfo->image_width, cinfo->max_v_samp_factor, |
| compptr->v_samp_factor, |
| compptr->width_in_blocks, |
| input_data, output_data); |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, |
| JSAMPARRAY input_data, JSAMPARRAY output_data) |
| { |
| jsimd_h2v1_downsample_altivec(cinfo->image_width, cinfo->max_v_samp_factor, |
| compptr->v_samp_factor, |
| compptr->width_in_blocks, |
| input_data, output_data); |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v2_upsample (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v1_upsample (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v2_upsample (j_decompress_ptr cinfo, |
| jpeg_component_info *compptr, |
| JSAMPARRAY input_data, |
| JSAMPARRAY *output_data_ptr) |
| { |
| jsimd_h2v2_upsample_altivec(cinfo->max_v_samp_factor, cinfo->output_width, |
| input_data, output_data_ptr); |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v1_upsample (j_decompress_ptr cinfo, |
| jpeg_component_info *compptr, |
| JSAMPARRAY input_data, |
| JSAMPARRAY *output_data_ptr) |
| { |
| jsimd_h2v1_upsample_altivec(cinfo->max_v_samp_factor, cinfo->output_width, |
| input_data, output_data_ptr); |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v2_fancy_upsample (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v1_fancy_upsample (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v2_fancy_upsample (j_decompress_ptr cinfo, |
| jpeg_component_info *compptr, |
| JSAMPARRAY input_data, |
| JSAMPARRAY *output_data_ptr) |
| { |
| jsimd_h2v2_fancy_upsample_altivec(cinfo->max_v_samp_factor, |
| compptr->downsampled_width, input_data, |
| output_data_ptr); |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v1_fancy_upsample (j_decompress_ptr cinfo, |
| jpeg_component_info *compptr, |
| JSAMPARRAY input_data, |
| JSAMPARRAY *output_data_ptr) |
| { |
| jsimd_h2v1_fancy_upsample_altivec(cinfo->max_v_samp_factor, |
| compptr->downsampled_width, input_data, |
| output_data_ptr); |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v2_merged_upsample (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_h2v1_merged_upsample (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v2_merged_upsample (j_decompress_ptr cinfo, |
| JSAMPIMAGE input_buf, |
| JDIMENSION in_row_group_ctr, |
| JSAMPARRAY output_buf) |
| { |
| void (*altivecfct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY); |
| |
| switch(cinfo->out_color_space) { |
| case JCS_EXT_RGB: |
| altivecfct=jsimd_h2v2_extrgb_merged_upsample_altivec; |
| break; |
| case JCS_EXT_RGBX: |
| case JCS_EXT_RGBA: |
| altivecfct=jsimd_h2v2_extrgbx_merged_upsample_altivec; |
| break; |
| case JCS_EXT_BGR: |
| altivecfct=jsimd_h2v2_extbgr_merged_upsample_altivec; |
| break; |
| case JCS_EXT_BGRX: |
| case JCS_EXT_BGRA: |
| altivecfct=jsimd_h2v2_extbgrx_merged_upsample_altivec; |
| break; |
| case JCS_EXT_XBGR: |
| case JCS_EXT_ABGR: |
| altivecfct=jsimd_h2v2_extxbgr_merged_upsample_altivec; |
| break; |
| case JCS_EXT_XRGB: |
| case JCS_EXT_ARGB: |
| altivecfct=jsimd_h2v2_extxrgb_merged_upsample_altivec; |
| break; |
| default: |
| altivecfct=jsimd_h2v2_merged_upsample_altivec; |
| break; |
| } |
| |
| altivecfct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf); |
| } |
| |
| GLOBAL(void) |
| jsimd_h2v1_merged_upsample (j_decompress_ptr cinfo, |
| JSAMPIMAGE input_buf, |
| JDIMENSION in_row_group_ctr, |
| JSAMPARRAY output_buf) |
| { |
| void (*altivecfct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY); |
| |
| switch(cinfo->out_color_space) { |
| case JCS_EXT_RGB: |
| altivecfct=jsimd_h2v1_extrgb_merged_upsample_altivec; |
| break; |
| case JCS_EXT_RGBX: |
| case JCS_EXT_RGBA: |
| altivecfct=jsimd_h2v1_extrgbx_merged_upsample_altivec; |
| break; |
| case JCS_EXT_BGR: |
| altivecfct=jsimd_h2v1_extbgr_merged_upsample_altivec; |
| break; |
| case JCS_EXT_BGRX: |
| case JCS_EXT_BGRA: |
| altivecfct=jsimd_h2v1_extbgrx_merged_upsample_altivec; |
| break; |
| case JCS_EXT_XBGR: |
| case JCS_EXT_ABGR: |
| altivecfct=jsimd_h2v1_extxbgr_merged_upsample_altivec; |
| break; |
| case JCS_EXT_XRGB: |
| case JCS_EXT_ARGB: |
| altivecfct=jsimd_h2v1_extxrgb_merged_upsample_altivec; |
| break; |
| default: |
| altivecfct=jsimd_h2v1_merged_upsample_altivec; |
| break; |
| } |
| |
| altivecfct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf); |
| } |
| |
| GLOBAL(int) |
| jsimd_can_convsamp (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (DCTSIZE != 8) |
| return 0; |
| if (BITS_IN_JSAMPLE != 8) |
| return 0; |
| if (sizeof(JDIMENSION) != 4) |
| return 0; |
| if (sizeof(DCTELEM) != 2) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_convsamp_float (void) |
| { |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_convsamp (JSAMPARRAY sample_data, JDIMENSION start_col, |
| DCTELEM *workspace) |
| { |
| jsimd_convsamp_altivec(sample_data, start_col, workspace); |
| } |
| |
| GLOBAL(void) |
| jsimd_convsamp_float (JSAMPARRAY sample_data, JDIMENSION start_col, |
| FAST_FLOAT *workspace) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_fdct_islow (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (DCTSIZE != 8) |
| return 0; |
| if (sizeof(DCTELEM) != 2) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_fdct_ifast (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (DCTSIZE != 8) |
| return 0; |
| if (sizeof(DCTELEM) != 2) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_fdct_float (void) |
| { |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_fdct_islow (DCTELEM *data) |
| { |
| jsimd_fdct_islow_altivec(data); |
| } |
| |
| GLOBAL(void) |
| jsimd_fdct_ifast (DCTELEM *data) |
| { |
| jsimd_fdct_ifast_altivec(data); |
| } |
| |
| GLOBAL(void) |
| jsimd_fdct_float (FAST_FLOAT *data) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_quantize (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (DCTSIZE != 8) |
| return 0; |
| if (sizeof(JCOEF) != 2) |
| return 0; |
| if (sizeof(DCTELEM) != 2) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_quantize_float (void) |
| { |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_quantize (JCOEFPTR coef_block, DCTELEM *divisors, |
| DCTELEM *workspace) |
| { |
| jsimd_quantize_altivec(coef_block, divisors, workspace); |
| } |
| |
| GLOBAL(void) |
| jsimd_quantize_float (JCOEFPTR coef_block, FAST_FLOAT *divisors, |
| FAST_FLOAT *workspace) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_idct_2x2 (void) |
| { |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_idct_4x4 (void) |
| { |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info *compptr, |
| JCOEFPTR coef_block, JSAMPARRAY output_buf, |
| JDIMENSION output_col) |
| { |
| } |
| |
| GLOBAL(void) |
| jsimd_idct_4x4 (j_decompress_ptr cinfo, jpeg_component_info *compptr, |
| JCOEFPTR coef_block, JSAMPARRAY output_buf, |
| JDIMENSION output_col) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_idct_islow (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (DCTSIZE != 8) |
| return 0; |
| if (sizeof(JCOEF) != 2) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_idct_ifast (void) |
| { |
| init_simd(); |
| |
| /* The code is optimised for these values only */ |
| if (DCTSIZE != 8) |
| return 0; |
| if (sizeof(JCOEF) != 2) |
| return 0; |
| |
| if (simd_support & JSIMD_ALTIVEC) |
| return 1; |
| |
| return 0; |
| } |
| |
| GLOBAL(int) |
| jsimd_can_idct_float (void) |
| { |
| return 0; |
| } |
| |
| GLOBAL(void) |
| jsimd_idct_islow (j_decompress_ptr cinfo, jpeg_component_info *compptr, |
| JCOEFPTR coef_block, JSAMPARRAY output_buf, |
| JDIMENSION output_col) |
| { |
| jsimd_idct_islow_altivec(compptr->dct_table, coef_block, output_buf, |
| output_col); |
| } |
| |
| GLOBAL(void) |
| jsimd_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info *compptr, |
| JCOEFPTR coef_block, JSAMPARRAY output_buf, |
| JDIMENSION output_col) |
| { |
| jsimd_idct_ifast_altivec(compptr->dct_table, coef_block, output_buf, |
| output_col); |
| } |
| |
| GLOBAL(void) |
| jsimd_idct_float (j_decompress_ptr cinfo, jpeg_component_info *compptr, |
| JCOEFPTR coef_block, JSAMPARRAY output_buf, |
| JDIMENSION output_col) |
| { |
| } |
| |
| GLOBAL(int) |
| jsimd_can_huff_encode_one_block (void) |
| { |
| return 0; |
| } |
| |
| GLOBAL(JOCTET*) |
| jsimd_huff_encode_one_block (void *state, JOCTET *buffer, JCOEFPTR block, |
| int last_dc_val, c_derived_tbl *dctbl, |
| c_derived_tbl *actbl) |
| { |
| return NULL; |
| } |
