blockd.c (3876B)
1 /* 2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved. 3 * 4 * This source code is subject to the terms of the BSD 2 Clause License and 5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License 6 * was not distributed with this source code in the LICENSE file, you can 7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open 8 * Media Patent License 1.0 was not distributed with this source code in the 9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent. 10 */ 11 12 #include <math.h> 13 14 #include "av1/common/av1_common_int.h" 15 #include "av1/common/blockd.h" 16 17 PREDICTION_MODE av1_left_block_mode(const MB_MODE_INFO *left_mi) { 18 if (!left_mi) return DC_PRED; 19 assert(!is_inter_block(left_mi) || is_intrabc_block(left_mi)); 20 return left_mi->mode; 21 } 22 23 PREDICTION_MODE av1_above_block_mode(const MB_MODE_INFO *above_mi) { 24 if (!above_mi) return DC_PRED; 25 assert(!is_inter_block(above_mi) || is_intrabc_block(above_mi)); 26 return above_mi->mode; 27 } 28 29 void av1_set_entropy_contexts(const MACROBLOCKD *xd, 30 struct macroblockd_plane *pd, int plane, 31 BLOCK_SIZE plane_bsize, TX_SIZE tx_size, 32 int has_eob, int aoff, int loff) { 33 ENTROPY_CONTEXT *const a = pd->above_entropy_context + aoff; 34 ENTROPY_CONTEXT *const l = pd->left_entropy_context + loff; 35 const int txs_wide = tx_size_wide_unit[tx_size]; 36 const int txs_high = tx_size_high_unit[tx_size]; 37 38 // above 39 if (has_eob && xd->mb_to_right_edge < 0) { 40 const int blocks_wide = max_block_wide(xd, plane_bsize, plane); 41 const int above_contexts = AOMMIN(txs_wide, blocks_wide - aoff); 42 memset(a, has_eob, sizeof(*a) * above_contexts); 43 memset(a + above_contexts, 0, sizeof(*a) * (txs_wide - above_contexts)); 44 } else { 45 memset(a, has_eob, sizeof(*a) * txs_wide); 46 } 47 48 // left 49 if (has_eob && xd->mb_to_bottom_edge < 0) { 50 const int blocks_high = max_block_high(xd, plane_bsize, plane); 51 const int left_contexts = AOMMIN(txs_high, blocks_high - loff); 52 memset(l, has_eob, sizeof(*l) * left_contexts); 53 memset(l + left_contexts, 0, sizeof(*l) * (txs_high - left_contexts)); 54 } else { 55 memset(l, has_eob, sizeof(*l) * txs_high); 56 } 57 } 58 void av1_reset_entropy_context(MACROBLOCKD *xd, BLOCK_SIZE bsize, 59 const int num_planes) { 60 assert(bsize < BLOCK_SIZES_ALL); 61 const int nplanes = 1 + (num_planes - 1) * xd->is_chroma_ref; 62 for (int i = 0; i < nplanes; i++) { 63 struct macroblockd_plane *const pd = &xd->plane[i]; 64 const BLOCK_SIZE plane_bsize = 65 get_plane_block_size(bsize, pd->subsampling_x, pd->subsampling_y); 66 const int txs_wide = mi_size_wide[plane_bsize]; 67 const int txs_high = mi_size_high[plane_bsize]; 68 memset(pd->above_entropy_context, 0, sizeof(ENTROPY_CONTEXT) * txs_wide); 69 memset(pd->left_entropy_context, 0, sizeof(ENTROPY_CONTEXT) * txs_high); 70 } 71 } 72 73 void av1_reset_loop_filter_delta(MACROBLOCKD *xd, int num_planes) { 74 xd->delta_lf_from_base = 0; 75 const int frame_lf_count = 76 num_planes > 1 ? FRAME_LF_COUNT : FRAME_LF_COUNT - 2; 77 for (int lf_id = 0; lf_id < frame_lf_count; ++lf_id) xd->delta_lf[lf_id] = 0; 78 } 79 80 void av1_reset_loop_restoration(MACROBLOCKD *xd, const int num_planes) { 81 for (int p = 0; p < num_planes; ++p) { 82 set_default_wiener(xd->wiener_info + p); 83 set_default_sgrproj(xd->sgrproj_info + p); 84 } 85 } 86 87 void av1_setup_block_planes(MACROBLOCKD *xd, int ss_x, int ss_y, 88 const int num_planes) { 89 int i; 90 91 for (i = 0; i < num_planes; i++) { 92 xd->plane[i].plane_type = get_plane_type(i); 93 xd->plane[i].subsampling_x = i ? ss_x : 0; 94 xd->plane[i].subsampling_y = i ? ss_y : 0; 95 } 96 for (i = num_planes; i < MAX_MB_PLANE; i++) { 97 xd->plane[i].subsampling_x = 1; 98 xd->plane[i].subsampling_y = 1; 99 } 100 }