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/*
* Copyright (c) 2018, 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 "third_party/googletest/src/googletest/include/gtest/gtest.h"
#include "av1/common/scan.h"
#include "av1/common/txb_common.h"
#include "test/av1_txfm_test.h"
static int scan_test(const int16_t *scan, const int16_t *iscan, int si, int r,
int c, int h) {
if (iscan[c * h + r] != si || scan[si] != c * h + r) {
printf("r %d c %d ref_iscan %d iscan %d ref_scan %d scan %d\n", r, c, si,
iscan[c * h + r], c * h + r, scan[si]);
return 1;
} else {
return 0;
}
}
int scan_order_test(const SCAN_ORDER *scan_order, int w, int h,
SCAN_MODE mode) {
const int16_t *scan = scan_order->scan;
const int16_t *iscan = scan_order->iscan;
int dim = w + h - 1;
if (mode == SCAN_MODE_ZIG_ZAG) {
int si = 0;
for (int i = 0; i < dim; ++i) {
if (i % 2 == 0) {
for (int c = 0; c < w; ++c) {
int r = i - c;
if (r >= 0 && r < h) {
if (scan_test(scan, iscan, si, r, c, h)) return 1;
++si;
}
}
} else {
for (int r = 0; r < h; ++r) {
int c = i - r;
if (c >= 0 && c < w) {
if (scan_test(scan, iscan, si, r, c, h)) return 1;
++si;
}
}
}
}
} else if (mode == SCAN_MODE_COL_DIAG) {
int si = 0;
for (int i = 0; i < dim; ++i) {
for (int c = 0; c < w; ++c) {
int r = i - c;
if (r >= 0 && r < h) {
if (scan_test(scan, iscan, si, r, c, h)) return 1;
++si;
}
}
}
} else if (mode == SCAN_MODE_ROW_DIAG) {
int si = 0;
for (int i = 0; i < dim; ++i) {
for (int r = 0; r < h; ++r) {
int c = i - r;
if (c >= 0 && c < w) {
if (scan_test(scan, iscan, si, r, c, h)) return 1;
++si;
}
}
}
} else if (mode == SCAN_MODE_ROW_1D) {
int si = 0;
for (int r = 0; r < h; ++r) {
for (int c = 0; c < w; ++c) {
if (scan_test(scan, iscan, si, r, c, h)) return 1;
++si;
}
}
} else {
assert(mode == SCAN_MODE_COL_1D);
int si = 0;
for (int c = 0; c < w; ++c) {
for (int r = 0; r < h; ++r) {
if (scan_test(scan, iscan, si, r, c, h)) return 1;
++si;
}
}
}
return 0;
}
TEST(Av1ScanTest, Dependency) {
for (int tx_size = TX_4X4; tx_size < TX_SIZES_ALL; ++tx_size) {
const int org_rows = tx_size_high[(TX_SIZE)tx_size];
const int org_cols = tx_size_wide[(TX_SIZE)tx_size];
const int rows = get_txb_high((TX_SIZE)tx_size);
const int cols = get_txb_wide((TX_SIZE)tx_size);
for (int tx_type = 0; tx_type < TX_TYPES; ++tx_type) {
if (libaom_test::IsTxSizeTypeValid(static_cast<TX_SIZE>(tx_size),
static_cast<TX_TYPE>(tx_type)) ==
false) {
continue;
}
SCAN_MODE scan_mode;
TX_CLASS tx_class = tx_type_to_class[(TX_TYPE)tx_type];
if (tx_class == TX_CLASS_2D) {
if (rows == cols) {
scan_mode = SCAN_MODE_ZIG_ZAG;
} else if (rows > cols) {
scan_mode = SCAN_MODE_ROW_DIAG;
} else {
scan_mode = SCAN_MODE_COL_DIAG;
}
} else if (tx_class == TX_CLASS_VERT) {
scan_mode = SCAN_MODE_ROW_1D;
} else {
assert(tx_class == TX_CLASS_HORIZ);
scan_mode = SCAN_MODE_COL_1D;
}
const SCAN_ORDER *scan_order =
get_default_scan((TX_SIZE)tx_size, (TX_TYPE)tx_type);
ASSERT_EQ(scan_order_test(scan_order, cols, rows, scan_mode), 0)
<< "scan mismatch tx_class " << tx_class << " tx_type " << tx_type
<< " tx_w " << org_cols << " tx_h " << org_rows << " scan_mode "
<< scan_mode << "\n";
}
}
}
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