| /* |
| * 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. |
| */ |
| |
| #ifndef AOM_AV1_COMMON_RECONINTRA_H_ |
| #define AOM_AV1_COMMON_RECONINTRA_H_ |
| |
| #include <stdlib.h> |
| |
| #include "aom/aom_integer.h" |
| #include "av1/common/av1_common_int.h" |
| #include "av1/common/blockd.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| void av1_init_intra_predictors(void); |
| void av1_predict_intra_block_facade(const AV1_COMMON *cm, MACROBLOCKD *xd, |
| int plane, int blk_col, int blk_row, |
| TX_SIZE tx_size); |
| void av1_predict_intra_block(const MACROBLOCKD *xd, BLOCK_SIZE sb_size, |
| int enable_intra_edge_filter, int wpx, int hpx, |
| TX_SIZE tx_size, PREDICTION_MODE mode, |
| int angle_delta, int use_palette, |
| FILTER_INTRA_MODE filter_intra_mode, |
| const uint8_t *ref, int ref_stride, uint8_t *dst, |
| int dst_stride, int col_off, int row_off, |
| int plane); |
| |
| // Mapping of interintra to intra mode for use in the intra component |
| static const PREDICTION_MODE interintra_to_intra_mode[INTERINTRA_MODES] = { |
| DC_PRED, V_PRED, H_PRED, SMOOTH_PRED |
| }; |
| |
| // Mapping of intra mode to the interintra mode |
| static const INTERINTRA_MODE intra_to_interintra_mode[INTRA_MODES] = { |
| II_DC_PRED, II_V_PRED, II_H_PRED, II_V_PRED, II_SMOOTH_PRED, II_V_PRED, |
| II_H_PRED, II_H_PRED, II_V_PRED, II_SMOOTH_PRED, II_SMOOTH_PRED |
| }; |
| |
| #define FILTER_INTRA_SCALE_BITS 4 |
| |
| static INLINE int av1_is_directional_mode(PREDICTION_MODE mode) { |
| return mode >= V_PRED && mode <= D67_PRED; |
| } |
| |
| static INLINE int av1_is_diagonal_mode(PREDICTION_MODE mode) { |
| return mode >= D45_PRED && mode <= D67_PRED; |
| } |
| |
| static INLINE int av1_use_angle_delta(BLOCK_SIZE bsize) { |
| return bsize >= BLOCK_8X8; |
| } |
| |
| static INLINE int av1_allow_intrabc(const AV1_COMMON *const cm) { |
| return frame_is_intra_only(cm) && cm->features.allow_screen_content_tools && |
| cm->features.allow_intrabc; |
| } |
| |
| static INLINE int av1_filter_intra_allowed_bsize(const AV1_COMMON *const cm, |
| BLOCK_SIZE bs) { |
| if (!cm->seq_params->enable_filter_intra || bs == BLOCK_INVALID) return 0; |
| |
| return block_size_wide[bs] <= 32 && block_size_high[bs] <= 32; |
| } |
| |
| static INLINE int av1_filter_intra_allowed(const AV1_COMMON *const cm, |
| const MB_MODE_INFO *mbmi) { |
| return mbmi->mode == DC_PRED && |
| mbmi->palette_mode_info.palette_size[0] == 0 && |
| av1_filter_intra_allowed_bsize(cm, mbmi->bsize); |
| } |
| |
| extern const int8_t av1_filter_intra_taps[FILTER_INTRA_MODES][8][8]; |
| |
| static 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, ... |
| }; |
| |
| // Get the shift (up-scaled by 256) in X w.r.t a unit change in Y. |
| // If angle > 0 && angle < 90, dx = -((int)(256 / t)); |
| // If angle > 90 && angle < 180, dx = (int)(256 / t); |
| // If angle > 180 && angle < 270, dx = 1; |
| static INLINE int av1_get_dx(int angle) { |
| if (angle > 0 && angle < 90) { |
| return dr_intra_derivative[angle]; |
| } else if (angle > 90 && angle < 180) { |
| return dr_intra_derivative[180 - angle]; |
| } else { |
| // In this case, we are not really going to use dx. We may return any value. |
| return 1; |
| } |
| } |
| |
| // Get the shift (up-scaled by 256) in Y w.r.t a unit change in X. |
| // If angle > 0 && angle < 90, dy = 1; |
| // If angle > 90 && angle < 180, dy = (int)(256 * t); |
| // If angle > 180 && angle < 270, dy = -((int)(256 * t)); |
| static INLINE int av1_get_dy(int angle) { |
| if (angle > 90 && angle < 180) { |
| return dr_intra_derivative[angle - 90]; |
| } else if (angle > 180 && angle < 270) { |
| return dr_intra_derivative[270 - angle]; |
| } else { |
| // In this case, we are not really going to use dy. We may return any value. |
| return 1; |
| } |
| } |
| |
| static INLINE int av1_use_intra_edge_upsample(int bs0, int bs1, int delta, |
| int type) { |
| const int d = abs(delta); |
| const int blk_wh = bs0 + bs1; |
| if (d == 0 || d >= 40) return 0; |
| return type ? (blk_wh <= 8) : (blk_wh <= 16); |
| } |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| #endif // AOM_AV1_COMMON_RECONINTRA_H_ |