From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- third_party/aom/av1/common/seg_common.c | 84 +++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 third_party/aom/av1/common/seg_common.c (limited to 'third_party/aom/av1/common/seg_common.c') diff --git a/third_party/aom/av1/common/seg_common.c b/third_party/aom/av1/common/seg_common.c new file mode 100644 index 0000000000..cd189ad769 --- /dev/null +++ b/third_party/aom/av1/common/seg_common.c @@ -0,0 +1,84 @@ +/* + * 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. + */ + +#include + +#include "av1/common/av1_loopfilter.h" +#include "av1/common/blockd.h" +#include "av1/common/seg_common.h" +#include "av1/common/quant_common.h" + +static const int seg_feature_data_signed[SEG_LVL_MAX] = { 1, 1, 1, 1, 1, 0, 0 }; + +static const int seg_feature_data_max[SEG_LVL_MAX] = { + MAXQ, MAX_LOOP_FILTER, MAX_LOOP_FILTER, MAX_LOOP_FILTER, MAX_LOOP_FILTER, 7, 0 +}; + +// These functions provide access to new segment level features. +// Eventually these function may be "optimized out" but for the moment, +// the coding mechanism is still subject to change so these provide a +// convenient single point of change. + +void av1_clearall_segfeatures(struct segmentation *seg) { + av1_zero(seg->feature_data); + av1_zero(seg->feature_mask); +} + +void calculate_segdata(struct segmentation *seg) { + seg->segid_preskip = 0; + seg->last_active_segid = 0; + for (int i = 0; i < MAX_SEGMENTS; i++) { + for (int j = 0; j < SEG_LVL_MAX; j++) { + if (seg->feature_mask[i] & (1 << j)) { + seg->segid_preskip |= (j >= SEG_LVL_REF_FRAME); + seg->last_active_segid = i; + } + } + } +} + +void av1_enable_segfeature(struct segmentation *seg, int segment_id, + SEG_LVL_FEATURES feature_id) { + seg->feature_mask[segment_id] |= 1 << feature_id; +} + +int av1_seg_feature_data_max(SEG_LVL_FEATURES feature_id) { + return seg_feature_data_max[feature_id]; +} + +int av1_is_segfeature_signed(SEG_LVL_FEATURES feature_id) { + return seg_feature_data_signed[feature_id]; +} + +// The 'seg_data' given for each segment can be either deltas (from the default +// value chosen for the frame) or absolute values. +// +// Valid range for abs values is (0-127 for MB_LVL_ALT_Q), (0-63 for +// SEGMENT_ALT_LF) +// Valid range for delta values are (+/-127 for MB_LVL_ALT_Q), (+/-63 for +// SEGMENT_ALT_LF) +// +// abs_delta = SEGMENT_DELTADATA (deltas) abs_delta = SEGMENT_ABSDATA (use +// the absolute values given). + +void av1_set_segdata(struct segmentation *seg, int segment_id, + SEG_LVL_FEATURES feature_id, int seg_data) { + if (seg_data < 0) { + assert(seg_feature_data_signed[feature_id]); + assert(-seg_data <= seg_feature_data_max[feature_id]); + } else { + assert(seg_data <= seg_feature_data_max[feature_id]); + } + + seg->feature_data[segment_id][feature_id] = seg_data; +} + +// TBD? Functions to read and write segment data with range / validity checking -- cgit v1.2.3