| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #include <math.h> |
| |
| #include "aom_ports/system_state.h" |
| |
| #include "av1/common/blockd.h" |
| #include "av1/common/onyxc_int.h" |
| |
| PREDICTION_MODE av1_left_block_mode(const MB_MODE_INFO *left_mi) { |
| if (!left_mi) return DC_PRED; |
| assert(!is_inter_block(left_mi) || is_intrabc_block(left_mi)); |
| return left_mi->mode; |
| } |
| |
| PREDICTION_MODE av1_above_block_mode(const MB_MODE_INFO *above_mi) { |
| if (!above_mi) return DC_PRED; |
| assert(!is_inter_block(above_mi) || is_intrabc_block(above_mi)); |
| return above_mi->mode; |
| } |
| |
| void av1_foreach_transformed_block_in_plane( |
| const MACROBLOCKD *const xd, BLOCK_SIZE bsize, int plane, |
| foreach_transformed_block_visitor visit, void *arg) { |
| const struct macroblockd_plane *const pd = &xd->plane[plane]; |
| // block and transform sizes, in number of 4x4 blocks log 2 ("*_b") |
| // 4x4=0, 8x8=2, 16x16=4, 32x32=6, 64x64=8 |
| // transform size varies per plane, look it up in a common way. |
| const TX_SIZE tx_size = av1_get_tx_size(plane, xd); |
| const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, pd); |
| const uint8_t txw_unit = tx_size_wide_unit[tx_size]; |
| const uint8_t txh_unit = tx_size_high_unit[tx_size]; |
| const int step = txw_unit * txh_unit; |
| int i = 0, r, c; |
| |
| // If mb_to_right_edge is < 0 we are in a situation in which |
| // the current block size extends into the UMV and we won't |
| // visit the sub blocks that are wholly within the UMV. |
| const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane); |
| const int max_blocks_high = max_block_high(xd, plane_bsize, plane); |
| |
| int blk_row, blk_col; |
| |
| const BLOCK_SIZE max_unit_bsize = get_plane_block_size(BLOCK_64X64, pd); |
| int mu_blocks_wide = block_size_wide[max_unit_bsize] >> tx_size_wide_log2[0]; |
| int mu_blocks_high = block_size_high[max_unit_bsize] >> tx_size_high_log2[0]; |
| mu_blocks_wide = AOMMIN(max_blocks_wide, mu_blocks_wide); |
| mu_blocks_high = AOMMIN(max_blocks_high, mu_blocks_high); |
| |
| // Keep track of the row and column of the blocks we use so that we know |
| // if we are in the unrestricted motion border. |
| for (r = 0; r < max_blocks_high; r += mu_blocks_high) { |
| const int unit_height = AOMMIN(mu_blocks_high + r, max_blocks_high); |
| // Skip visiting the sub blocks that are wholly within the UMV. |
| for (c = 0; c < max_blocks_wide; c += mu_blocks_wide) { |
| const int unit_width = AOMMIN(mu_blocks_wide + c, max_blocks_wide); |
| for (blk_row = r; blk_row < unit_height; blk_row += txh_unit) { |
| for (blk_col = c; blk_col < unit_width; blk_col += txw_unit) { |
| visit(plane, i, blk_row, blk_col, plane_bsize, tx_size, arg); |
| i += step; |
| } |
| } |
| } |
| } |
| } |
| |
| void av1_foreach_transformed_block(const MACROBLOCKD *const xd, |
| BLOCK_SIZE bsize, int mi_row, int mi_col, |
| foreach_transformed_block_visitor visit, |
| void *arg, const int num_planes) { |
| for (int plane = 0; plane < num_planes; ++plane) { |
| if (!is_chroma_reference(mi_row, mi_col, bsize, |
| xd->plane[plane].subsampling_x, |
| xd->plane[plane].subsampling_y)) |
| continue; |
| av1_foreach_transformed_block_in_plane(xd, bsize, plane, visit, arg); |
| } |
| } |
| |
| void av1_set_contexts(const MACROBLOCKD *xd, struct macroblockd_plane *pd, |
| int plane, BLOCK_SIZE plane_bsize, TX_SIZE tx_size, |
| int has_eob, int aoff, int loff) { |
| ENTROPY_CONTEXT *const a = pd->above_context + aoff; |
| ENTROPY_CONTEXT *const l = pd->left_context + loff; |
| const int txs_wide = tx_size_wide_unit[tx_size]; |
| const int txs_high = tx_size_high_unit[tx_size]; |
| |
| // above |
| if (has_eob && xd->mb_to_right_edge < 0) { |
| const int blocks_wide = max_block_wide(xd, plane_bsize, plane); |
| const int above_contexts = AOMMIN(txs_wide, blocks_wide - aoff); |
| memset(a, has_eob, sizeof(*a) * above_contexts); |
| memset(a + above_contexts, 0, sizeof(*a) * (txs_wide - above_contexts)); |
| } else { |
| memset(a, has_eob, sizeof(*a) * txs_wide); |
| } |
| |
| // left |
| if (has_eob && xd->mb_to_bottom_edge < 0) { |
| const int blocks_high = max_block_high(xd, plane_bsize, plane); |
| const int left_contexts = AOMMIN(txs_high, blocks_high - loff); |
| memset(l, has_eob, sizeof(*l) * left_contexts); |
| memset(l + left_contexts, 0, sizeof(*l) * (txs_high - left_contexts)); |
| } else { |
| memset(l, has_eob, sizeof(*l) * txs_high); |
| } |
| } |
| void av1_reset_skip_context(MACROBLOCKD *xd, int mi_row, int mi_col, |
| BLOCK_SIZE bsize, const int num_planes) { |
| int i; |
| int nplanes; |
| int chroma_ref; |
| chroma_ref = |
| is_chroma_reference(mi_row, mi_col, bsize, xd->plane[1].subsampling_x, |
| xd->plane[1].subsampling_y); |
| nplanes = 1 + (num_planes - 1) * chroma_ref; |
| for (i = 0; i < nplanes; i++) { |
| struct macroblockd_plane *const pd = &xd->plane[i]; |
| const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, pd); |
| const int txs_wide = block_size_wide[plane_bsize] >> tx_size_wide_log2[0]; |
| const int txs_high = block_size_high[plane_bsize] >> tx_size_high_log2[0]; |
| memset(pd->above_context, 0, sizeof(ENTROPY_CONTEXT) * txs_wide); |
| memset(pd->left_context, 0, sizeof(ENTROPY_CONTEXT) * txs_high); |
| } |
| } |
| |
| void av1_reset_loop_restoration(MACROBLOCKD *xd, const int num_planes) { |
| for (int p = 0; p < num_planes; ++p) { |
| set_default_wiener(xd->wiener_info + p); |
| set_default_sgrproj(xd->sgrproj_info + p); |
| } |
| } |
| |
| void av1_setup_block_planes(MACROBLOCKD *xd, int ss_x, int ss_y, |
| const int num_planes) { |
| int i; |
| |
| for (i = 0; i < num_planes; i++) { |
| xd->plane[i].plane_type = get_plane_type(i); |
| xd->plane[i].subsampling_x = i ? ss_x : 0; |
| xd->plane[i].subsampling_y = i ? ss_y : 0; |
| } |
| } |
| |
| const int16_t dr_intra_derivative[90] = { |
| // More evenly spread out angles and limited to 10-bit |
| // Values that are 0 will never be used |
| // Approx angle |
| 0, 0, 0, // |
| 1023, 0, 0, // 3, ... |
| 547, 0, 0, // 6, ... |
| 372, 0, 0, 0, 0, // 9, ... |
| 273, 0, 0, // 14, ... |
| 215, 0, 0, // 17, ... |
| 178, 0, 0, // 20, ... |
| 151, 0, 0, // 23, ... (113 & 203 are base angles) |
| 132, 0, 0, // 26, ... |
| 116, 0, 0, // 29, ... |
| 102, 0, 0, 0, // 32, ... |
| 90, 0, 0, // 36, ... |
| 80, 0, 0, // 39, ... |
| 71, 0, 0, // 42, ... |
| 64, 0, 0, // 45, ... (45 & 135 are base angles) |
| 57, 0, 0, // 48, ... |
| 51, 0, 0, // 51, ... |
| 45, 0, 0, 0, // 54, ... |
| 40, 0, 0, // 58, ... |
| 35, 0, 0, // 61, ... |
| 31, 0, 0, // 64, ... |
| 27, 0, 0, // 67, ... (67 & 157 are base angles) |
| 23, 0, 0, // 70, ... |
| 19, 0, 0, // 73, ... |
| 15, 0, 0, 0, 0, // 76, ... |
| 11, 0, 0, // 81, ... |
| 7, 0, 0, // 84, ... |
| 3, 0, 0, // 87, ... |
| }; |
