pal.c (2772B)
1 /* 2 * Copyright © 2023, VideoLAN and dav1d authors 3 * Copyright © 2023, Two Orioles, LLC 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, this 10 * list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "config.h" 29 30 #include <string.h> 31 32 #include "common/attributes.h" 33 34 #include "src/pal.h" 35 36 // fill invisible edges and pack to 4-bit (2 pixels per byte) 37 static void pal_idx_finish_c(uint8_t *dst, const uint8_t *src, 38 const int bw, const int bh, 39 const int w, const int h) 40 { 41 assert(bw >= 4 && bw <= 64 && !(bw & (bw - 1))); 42 assert(bh >= 4 && bh <= 64 && !(bh & (bh - 1))); 43 assert(w >= 4 && w <= bw && !(w & 3)); 44 assert(h >= 4 && h <= bh && !(h & 3)); 45 46 const int dst_w = w / 2; 47 const int dst_bw = bw / 2; 48 49 for (int y = 0; y < h; y++, src += bw, dst += dst_bw) { 50 for (int x = 0; x < dst_w; x++) 51 dst[x] = src[x * 2 + 0] | (src[x * 2 + 1] << 4); 52 if (dst_w < dst_bw) 53 memset(dst + dst_w, src[w - 1] * 0x11, dst_bw - dst_w); 54 } 55 56 if (h < bh) { 57 const uint8_t *const last_row = &dst[-dst_bw]; 58 for (int y = h; y < bh; y++, dst += dst_bw) 59 memcpy(dst, last_row, dst_bw); 60 } 61 } 62 63 #if HAVE_ASM 64 #if ARCH_RISCV 65 #include "riscv/pal.h" 66 #elif ARCH_X86 67 #include "x86/pal.h" 68 #endif 69 #endif 70 71 COLD void dav1d_pal_dsp_init(Dav1dPalDSPContext *const c) { 72 c->pal_idx_finish = pal_idx_finish_c; 73 74 #if HAVE_ASM 75 #if ARCH_RISCV 76 pal_dsp_init_riscv(c); 77 #elif ARCH_X86 78 pal_dsp_init_x86(c); 79 #endif 80 #endif 81 }