From 68569dee1416593955c1570d638b3d9250b33012 Mon Sep 17 00:00:00 2001 From: trav90 Date: Mon, 15 Oct 2018 21:45:30 -0500 Subject: Import aom library This is the reference implementation for the Alliance for Open Media's av1 video code. The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36. --- third_party/aom/av1/common/seg_common.h | 86 +++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 third_party/aom/av1/common/seg_common.h (limited to 'third_party/aom/av1/common/seg_common.h') diff --git a/third_party/aom/av1/common/seg_common.h b/third_party/aom/av1/common/seg_common.h new file mode 100644 index 000000000..03ed38e79 --- /dev/null +++ b/third_party/aom/av1/common/seg_common.h @@ -0,0 +1,86 @@ +/* + * 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 AV1_COMMON_SEG_COMMON_H_ +#define AV1_COMMON_SEG_COMMON_H_ + +#include "aom_dsp/prob.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define SEGMENT_DELTADATA 0 +#define SEGMENT_ABSDATA 1 + +#define MAX_SEGMENTS 8 +#define SEG_TREE_PROBS (MAX_SEGMENTS - 1) + +#define PREDICTION_PROBS 3 + +// Segment level features. +typedef enum { + SEG_LVL_ALT_Q = 0, // Use alternate Quantizer .... + SEG_LVL_ALT_LF = 1, // Use alternate loop filter value... + SEG_LVL_REF_FRAME = 2, // Optional Segment reference frame + SEG_LVL_SKIP = 3, // Optional Segment (0,0) + skip mode + SEG_LVL_MAX = 4 // Number of features supported +} SEG_LVL_FEATURES; + +struct segmentation { + uint8_t enabled; + uint8_t update_map; + uint8_t update_data; + uint8_t abs_delta; + uint8_t temporal_update; + + int16_t feature_data[MAX_SEGMENTS][SEG_LVL_MAX]; + unsigned int feature_mask[MAX_SEGMENTS]; +}; + +struct segmentation_probs { + aom_prob tree_probs[SEG_TREE_PROBS]; +#if CONFIG_EC_MULTISYMBOL + aom_cdf_prob tree_cdf[CDF_SIZE(MAX_SEGMENTS)]; +#endif + aom_prob pred_probs[PREDICTION_PROBS]; +}; + +static INLINE int segfeature_active(const struct segmentation *seg, + int segment_id, + SEG_LVL_FEATURES feature_id) { + return seg->enabled && (seg->feature_mask[segment_id] & (1 << feature_id)); +} + +void av1_clearall_segfeatures(struct segmentation *seg); + +void av1_enable_segfeature(struct segmentation *seg, int segment_id, + SEG_LVL_FEATURES feature_id); + +int av1_seg_feature_data_max(SEG_LVL_FEATURES feature_id); + +int av1_is_segfeature_signed(SEG_LVL_FEATURES feature_id); + +void av1_set_segdata(struct segmentation *seg, int segment_id, + SEG_LVL_FEATURES feature_id, int seg_data); + +static INLINE int get_segdata(const struct segmentation *seg, int segment_id, + SEG_LVL_FEATURES feature_id) { + return seg->feature_data[segment_id][feature_id]; +} + +extern const aom_tree_index av1_segment_tree[TREE_SIZE(MAX_SEGMENTS)]; + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AV1_COMMON_SEG_COMMON_H_ -- cgit v1.2.3