f883b42cab
Cherry-Picked the following commits: 0defd8f Changed "WebM" to "AOMedia" & "webm" to "aomedia" 54e6676 Replace "VPx" by "AVx" 5082a36 Change "Vpx" to "Avx" 7df44f1 Replace "Vp9" w/ "Av1" 967f722 Remove kVp9CodecId 828f30c Change "Vp8" to "AOM" 030b5ff AUTHORS regenerated 2524cae Add ref-mv experimental flag 016762b Change copyright notice to AOMedia form 81e5526 Replace vp9 w/ av1 9b94565 Add missing files fa8ca9f Change "vp9" to "av1" ec838b7 Convert "vp8" to "aom" 80edfa0 Change "VP9" to "AV1" d1a11fb Change "vp8" to "aom" 7b58251 Point to WebM test data dd1a5c8 Replace "VP8" with "AOM" ff00fc0 Change "VPX" to "AOM" 01dee0b Change "vp10" to "av1" in source code cebe6f0 Convert "vpx" to "aom" 17b0567 rename vp10*.mk to av1_*.mk fe5f8a8 rename files vp10_* to av1_* Change-Id: I6fc3d18eb11fc171e46140c836ad5339cf6c9419
96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
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* Copyright (c) 2016 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef AV1_ENCODER_VARIANCE_TREE_H_
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#define AV1_ENCODER_VARIANCE_TREE_H_
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#include <assert.h>
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#include "./aom_config.h"
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#include "aom/aom_integer.h"
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#include "av1/common/enums.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct AV1Common;
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struct ThreadData;
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typedef struct {
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int64_t sum_square_error;
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int64_t sum_error;
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int log2_count;
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int variance;
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} var;
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typedef struct {
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var none;
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var horz[2];
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var vert[2];
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} partition_variance;
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typedef struct VAR_TREE {
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int force_split;
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partition_variance variances;
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struct VAR_TREE *split[4];
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BLOCK_SIZE bsize;
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const uint8_t *src;
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const uint8_t *ref;
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int src_stride;
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int ref_stride;
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int width;
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int height;
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#if CONFIG_AOM_HIGHBITDEPTH
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int highbd;
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#endif // CONFIG_AOM_HIGHBITDEPTH
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} VAR_TREE;
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void av1_setup_var_tree(struct AV1Common *cm, struct ThreadData *td);
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void av1_free_var_tree(struct ThreadData *td);
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// Set variance values given sum square error, sum error, count.
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static INLINE void fill_variance(int64_t s2, int64_t s, int c, var *v) {
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v->sum_square_error = s2;
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v->sum_error = s;
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v->log2_count = c;
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v->variance =
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(int)(256 * (v->sum_square_error -
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((v->sum_error * v->sum_error) >> v->log2_count)) >>
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v->log2_count);
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}
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static INLINE void sum_2_variances(const var *a, const var *b, var *r) {
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assert(a->log2_count == b->log2_count);
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fill_variance(a->sum_square_error + b->sum_square_error,
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a->sum_error + b->sum_error, a->log2_count + 1, r);
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}
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static INLINE void fill_variance_node(VAR_TREE *vt) {
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sum_2_variances(&vt->split[0]->variances.none, &vt->split[1]->variances.none,
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&vt->variances.horz[0]);
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sum_2_variances(&vt->split[2]->variances.none, &vt->split[3]->variances.none,
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&vt->variances.horz[1]);
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sum_2_variances(&vt->split[0]->variances.none, &vt->split[2]->variances.none,
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&vt->variances.vert[0]);
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sum_2_variances(&vt->split[1]->variances.none, &vt->split[3]->variances.none,
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&vt->variances.vert[1]);
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sum_2_variances(&vt->variances.vert[0], &vt->variances.vert[1],
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&vt->variances.none);
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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_ENCODER_VARIANCE_TREE_H_ */
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