riscv_init.c (1420B)
1 /* riscv_init.c - RISC-V Vector optimized filter functions 2 * 3 * Copyright (c) 2023 Google LLC 4 * Written by Dragoș Tiselice <dtiselice@google.com>, May 2023. 5 * Filip Wasil <f.wasil@samsung.com>, March 2025. 6 * This code is released under the libpng license. 7 * For conditions of distribution and use, see the disclaimer 8 * and license in png.h 9 */ 10 11 #include "../pngpriv.h" 12 13 #ifdef PNG_READ_SUPPORTED 14 15 #if PNG_RISCV_RVV_IMPLEMENTATION == 1 16 17 #include <riscv_vector.h> 18 19 #ifndef PNG_ALIGNED_MEMORY_SUPPORTED 20 # error "ALIGNED_MEMORY is required; set: -DPNG_ALIGNED_MEMORY_SUPPORTED" 21 #endif 22 23 void 24 png_init_filter_functions_rvv(png_structp pp, unsigned int bpp) 25 { 26 png_debug(1, "in png_init_filter_functions_rvv"); 27 28 pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_rvv; 29 30 if (bpp == 3) 31 { 32 pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_rvv; 33 pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = png_read_filter_row_paeth3_rvv; 34 pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_rvv; 35 } 36 else if (bpp == 4) 37 { 38 pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_rvv; 39 pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = png_read_filter_row_paeth4_rvv; 40 pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_rvv; 41 } 42 } 43 44 #endif /* PNG_RISCV_RVV_IMPLEMENTATION == 1 */ 45 #endif /* PNG_READ_SUPPORTED */