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Diffstat (limited to '')
| -rw-r--r-- | third_party/aom/av1/common/reconintra.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/reconintra.h b/third_party/aom/av1/common/reconintra.h new file mode 100644 index 0000000000..fa66ccd541 --- /dev/null +++ b/third_party/aom/av1/common/reconintra.h @@ -0,0 +1,158 @@ +/* + * 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_ |