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
86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
/*
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* Copyright (c) 2012 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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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
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#include "third_party/googletest/src/include/gtest/gtest.h"
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#include "./aom_dsp_rtcd.h"
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#include "test/acm_random.h"
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#include "aom/aom_integer.h"
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#include "aom_ports/msvc.h" // for round()
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using libaom_test::ACMRandom;
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namespace {
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void reference_dct_1d(double input[8], double output[8]) {
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const double kPi = 3.141592653589793238462643383279502884;
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const double kInvSqrt2 = 0.707106781186547524400844362104;
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for (int k = 0; k < 8; k++) {
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output[k] = 0.0;
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for (int n = 0; n < 8; n++)
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output[k] += input[n] * cos(kPi * (2 * n + 1) * k / 16.0);
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if (k == 0) output[k] = output[k] * kInvSqrt2;
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}
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}
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void reference_dct_2d(int16_t input[64], double output[64]) {
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// First transform columns
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for (int i = 0; i < 8; ++i) {
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double temp_in[8], temp_out[8];
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for (int j = 0; j < 8; ++j) temp_in[j] = input[j * 8 + i];
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reference_dct_1d(temp_in, temp_out);
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for (int j = 0; j < 8; ++j) output[j * 8 + i] = temp_out[j];
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}
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// Then transform rows
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for (int i = 0; i < 8; ++i) {
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double temp_in[8], temp_out[8];
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for (int j = 0; j < 8; ++j) temp_in[j] = output[j + i * 8];
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reference_dct_1d(temp_in, temp_out);
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for (int j = 0; j < 8; ++j) output[j + i * 8] = temp_out[j];
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}
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// Scale by some magic number
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for (int i = 0; i < 64; ++i) output[i] *= 2;
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}
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TEST(AV1Idct8x8Test, AccuracyCheck) {
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ACMRandom rnd(ACMRandom::DeterministicSeed());
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const int count_test_block = 10000;
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for (int i = 0; i < count_test_block; ++i) {
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int16_t input[64];
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tran_low_t coeff[64];
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double output_r[64];
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uint8_t dst[64], src[64];
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for (int j = 0; j < 64; ++j) {
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src[j] = rnd.Rand8();
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dst[j] = rnd.Rand8();
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}
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// Initialize a test block with input range [-255, 255].
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for (int j = 0; j < 64; ++j) input[j] = src[j] - dst[j];
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reference_dct_2d(input, output_r);
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for (int j = 0; j < 64; ++j)
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coeff[j] = static_cast<tran_low_t>(round(output_r[j]));
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aom_idct8x8_64_add_c(coeff, dst, 8);
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for (int j = 0; j < 64; ++j) {
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const int diff = dst[j] - src[j];
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const int error = diff * diff;
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EXPECT_GE(1, error) << "Error: 8x8 FDCT/IDCT has error " << error
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<< " at index " << j;
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}
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}
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}
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} // namespace
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