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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/av1/common/seg_common.h | 113 |
1 files changed, 113 insertions, 0 deletions
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 0000000000..44b508b146 --- /dev/null +++ b/third_party/aom/av1/common/seg_common.h @@ -0,0 +1,113 @@ +/* + * 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_SEG_COMMON_H_ +#define AOM_AV1_COMMON_SEG_COMMON_H_ + +#include "aom_dsp/prob.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define MAX_SEGMENTS 8 +#define SEG_TREE_PROBS (MAX_SEGMENTS - 1) + +#define SEG_TEMPORAL_PRED_CTXS 3 +#define SPATIAL_PREDICTION_PROBS 3 + +enum { + SEG_LVL_ALT_Q, // Use alternate Quantizer .... + SEG_LVL_ALT_LF_Y_V, // Use alternate loop filter value on y plane vertical + SEG_LVL_ALT_LF_Y_H, // Use alternate loop filter value on y plane horizontal + SEG_LVL_ALT_LF_U, // Use alternate loop filter value on u plane + SEG_LVL_ALT_LF_V, // Use alternate loop filter value on v plane + SEG_LVL_REF_FRAME, // Optional Segment reference frame + SEG_LVL_SKIP, // Optional Segment (0,0) + skip mode + SEG_LVL_GLOBALMV, + SEG_LVL_MAX +} UENUM1BYTE(SEG_LVL_FEATURES); + +struct segmentation { + uint8_t enabled; + uint8_t update_map; + uint8_t update_data; + uint8_t temporal_update; + + int16_t feature_data[MAX_SEGMENTS][SEG_LVL_MAX]; + unsigned int feature_mask[MAX_SEGMENTS]; + int last_active_segid; // The highest numbered segment id that has some + // enabled feature. + uint8_t segid_preskip; // Whether the segment id will be read before the + // skip syntax element. + // 1: the segment id will be read first. + // 0: the skip syntax element will be read first. +}; + +struct segmentation_probs { + aom_cdf_prob pred_cdf[SEG_TEMPORAL_PRED_CTXS][CDF_SIZE(2)]; + aom_cdf_prob spatial_pred_seg_cdf[SPATIAL_PREDICTION_PROBS] + [CDF_SIZE(MAX_SEGMENTS)]; +}; + +static INLINE int segfeature_active(const struct segmentation *seg, + uint8_t segment_id, + SEG_LVL_FEATURES feature_id) { + return seg->enabled && (seg->feature_mask[segment_id] & (1 << feature_id)); +} + +static INLINE void segfeatures_copy(struct segmentation *dst, + const struct segmentation *src) { + int i, j; + for (i = 0; i < MAX_SEGMENTS; i++) { + dst->feature_mask[i] = src->feature_mask[i]; + for (j = 0; j < SEG_LVL_MAX; j++) { + dst->feature_data[i][j] = src->feature_data[i][j]; + } + } + dst->segid_preskip = src->segid_preskip; + dst->last_active_segid = src->last_active_segid; +} + +void av1_clearall_segfeatures(struct segmentation *seg); + +void av1_enable_segfeature(struct segmentation *seg, int segment_id, + SEG_LVL_FEATURES feature_id); + +void av1_calculate_segdata(struct segmentation *seg); + +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]; +} + +static AOM_INLINE void set_segment_id(uint8_t *segment_ids, int mi_offset, + int x_mis, int y_mis, int mi_stride, + uint8_t segment_id) { + segment_ids += mi_offset; + for (int y = 0; y < y_mis; ++y) { + memset(&segment_ids[y * mi_stride], segment_id, + x_mis * sizeof(segment_ids[0])); + } +} + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AV1_COMMON_SEG_COMMON_H_ |