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119 lines
4.3 KiB
C
119 lines
4.3 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AV1_COMMON_RECONINTRA_H_
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#define AV1_COMMON_RECONINTRA_H_
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#include <stdlib.h>
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#include "aom/aom_integer.h"
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#include "av1/common/blockd.h"
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#include "av1/common/onyxc_int.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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void av1_init_intra_predictors(void);
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void av1_predict_intra_block_facade(const AV1_COMMON *cm, MACROBLOCKD *xd,
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int plane, int blk_col, int blk_row,
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TX_SIZE tx_size);
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void av1_predict_intra_block(const AV1_COMMON *cm, const MACROBLOCKD *xd,
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int bw, int bh, TX_SIZE tx_size,
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PREDICTION_MODE mode, int angle_delta,
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int use_palette,
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FILTER_INTRA_MODE filter_intra_mode,
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const uint8_t *ref, int ref_stride, uint8_t *dst,
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int dst_stride, int aoff, int loff, int plane);
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// Mapping of interintra to intra mode for use in the intra component
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static const PREDICTION_MODE interintra_to_intra_mode[INTERINTRA_MODES] = {
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DC_PRED, V_PRED, H_PRED, SMOOTH_PRED
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};
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// Mapping of intra mode to the interintra mode
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static const INTERINTRA_MODE intra_to_interintra_mode[INTRA_MODES] = {
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II_DC_PRED, II_V_PRED, II_H_PRED, II_V_PRED, II_SMOOTH_PRED, II_V_PRED,
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II_H_PRED, II_H_PRED, II_V_PRED, II_SMOOTH_PRED, II_SMOOTH_PRED
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};
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#define FILTER_INTRA_SCALE_BITS 4
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static INLINE int av1_is_directional_mode(PREDICTION_MODE mode) {
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return mode >= V_PRED && mode <= D67_PRED;
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}
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static INLINE int av1_use_angle_delta(BLOCK_SIZE bsize) {
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return bsize >= BLOCK_8X8;
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}
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static INLINE int av1_allow_intrabc(const AV1_COMMON *const cm) {
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return frame_is_intra_only(cm) && cm->allow_screen_content_tools &&
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cm->allow_intrabc;
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}
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static INLINE int av1_filter_intra_allowed_bsize(const AV1_COMMON *const cm,
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BLOCK_SIZE bs) {
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if (!cm->seq_params.enable_filter_intra || bs == BLOCK_INVALID) return 0;
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return block_size_wide[bs] <= 32 && block_size_high[bs] <= 32;
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}
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static INLINE int av1_filter_intra_allowed(const AV1_COMMON *const cm,
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const MB_MODE_INFO *mbmi) {
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return mbmi->mode == DC_PRED &&
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mbmi->palette_mode_info.palette_size[0] == 0 &&
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av1_filter_intra_allowed_bsize(cm, mbmi->sb_type);
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}
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extern const int8_t av1_filter_intra_taps[FILTER_INTRA_MODES][8][8];
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// Get the shift (up-scaled by 256) in X w.r.t a unit change in Y.
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// If angle > 0 && angle < 90, dx = -((int)(256 / t));
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// If angle > 90 && angle < 180, dx = (int)(256 / t);
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// If angle > 180 && angle < 270, dx = 1;
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static INLINE int av1_get_dx(int angle) {
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if (angle > 0 && angle < 90) {
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return dr_intra_derivative[angle];
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} else if (angle > 90 && angle < 180) {
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return dr_intra_derivative[180 - angle];
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} else {
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// In this case, we are not really going to use dx. We may return any value.
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return 1;
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}
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}
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// Get the shift (up-scaled by 256) in Y w.r.t a unit change in X.
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// If angle > 0 && angle < 90, dy = 1;
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// If angle > 90 && angle < 180, dy = (int)(256 * t);
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// If angle > 180 && angle < 270, dy = -((int)(256 * t));
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static INLINE int av1_get_dy(int angle) {
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if (angle > 90 && angle < 180) {
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return dr_intra_derivative[angle - 90];
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} else if (angle > 180 && angle < 270) {
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return dr_intra_derivative[270 - angle];
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} else {
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// In this case, we are not really going to use dy. We may return any value.
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return 1;
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}
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}
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static INLINE int av1_use_intra_edge_upsample(int bs0, int bs1, int delta,
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int type) {
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const int d = abs(delta);
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const int blk_wh = bs0 + bs1;
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if (d <= 0 || d >= 40) return 0;
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return type ? (blk_wh <= 8) : (blk_wh <= 16);
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}
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AV1_COMMON_RECONINTRA_H_
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