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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 <string>
#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
#include "aom_dsp/grain_table.h"
#include "aom/internal/aom_codec_internal.h"
#include "av1/encoder/grain_test_vectors.h"
#include "test/video_source.h"
void grain_equal(const aom_film_grain_t *expected,
const aom_film_grain_t *actual) {
EXPECT_EQ(expected->apply_grain, actual->apply_grain);
EXPECT_EQ(expected->update_parameters, actual->update_parameters);
if (!expected->update_parameters) return;
EXPECT_EQ(expected->num_y_points, actual->num_y_points);
EXPECT_EQ(expected->num_cb_points, actual->num_cb_points);
EXPECT_EQ(expected->num_cr_points, actual->num_cr_points);
EXPECT_EQ(0, memcmp(expected->scaling_points_y, actual->scaling_points_y,
expected->num_y_points *
sizeof(expected->scaling_points_y[0])));
EXPECT_EQ(0, memcmp(expected->scaling_points_cb, actual->scaling_points_cb,
expected->num_cb_points *
sizeof(expected->scaling_points_cb[0])));
EXPECT_EQ(0, memcmp(expected->scaling_points_cr, actual->scaling_points_cr,
expected->num_cr_points *
sizeof(expected->scaling_points_cr[0])));
EXPECT_EQ(expected->scaling_shift, actual->scaling_shift);
EXPECT_EQ(expected->ar_coeff_lag, actual->ar_coeff_lag);
EXPECT_EQ(expected->ar_coeff_shift, actual->ar_coeff_shift);
const int num_pos_luma =
2 * expected->ar_coeff_lag * (expected->ar_coeff_lag + 1);
const int num_pos_chroma = num_pos_luma;
EXPECT_EQ(0, memcmp(expected->ar_coeffs_y, actual->ar_coeffs_y,
sizeof(expected->ar_coeffs_y[0]) * num_pos_luma));
if (actual->num_cb_points || actual->chroma_scaling_from_luma) {
EXPECT_EQ(0, memcmp(expected->ar_coeffs_cb, actual->ar_coeffs_cb,
sizeof(expected->ar_coeffs_cb[0]) * num_pos_chroma));
}
if (actual->num_cr_points || actual->chroma_scaling_from_luma) {
EXPECT_EQ(0, memcmp(expected->ar_coeffs_cr, actual->ar_coeffs_cr,
sizeof(expected->ar_coeffs_cr[0]) * num_pos_chroma));
}
EXPECT_EQ(expected->overlap_flag, actual->overlap_flag);
EXPECT_EQ(expected->chroma_scaling_from_luma,
actual->chroma_scaling_from_luma);
EXPECT_EQ(expected->grain_scale_shift, actual->grain_scale_shift);
// EXPECT_EQ(expected->random_seed, actual->random_seed);
// clip_to_restricted and bit_depth aren't written
if (expected->num_cb_points) {
EXPECT_EQ(expected->cb_mult, actual->cb_mult);
EXPECT_EQ(expected->cb_luma_mult, actual->cb_luma_mult);
EXPECT_EQ(expected->cb_offset, actual->cb_offset);
}
if (expected->num_cr_points) {
EXPECT_EQ(expected->cr_mult, actual->cr_mult);
EXPECT_EQ(expected->cr_luma_mult, actual->cr_luma_mult);
EXPECT_EQ(expected->cr_offset, actual->cr_offset);
}
}
TEST(FilmGrainTableTest, AddAndLookupSingleSegment) {
aom_film_grain_table_t table;
memset(&table, 0, sizeof(table));
aom_film_grain_t grain;
EXPECT_FALSE(aom_film_grain_table_lookup(&table, 0, 1000, false, &grain));
aom_film_grain_table_append(&table, 1000, 2000, film_grain_test_vectors + 0);
EXPECT_FALSE(aom_film_grain_table_lookup(&table, 0, 1000, false, &grain));
EXPECT_FALSE(aom_film_grain_table_lookup(&table, 2000, 3000, false, &grain));
EXPECT_TRUE(aom_film_grain_table_lookup(&table, 1000, 2000, false, &grain));
grain.bit_depth = film_grain_test_vectors[0].bit_depth;
EXPECT_EQ(0, memcmp(&grain, film_grain_test_vectors + 0, sizeof(table)));
// Extend the existing segment
aom_film_grain_table_append(&table, 2000, 3000, film_grain_test_vectors + 0);
EXPECT_EQ(0, table.head->next);
// Lookup and remove and check that the entry is no longer there
EXPECT_TRUE(aom_film_grain_table_lookup(&table, 1000, 2000, true, &grain));
EXPECT_FALSE(aom_film_grain_table_lookup(&table, 1000, 2000, false, &grain));
EXPECT_TRUE(aom_film_grain_table_lookup(&table, 2000, 3000, true, &grain));
EXPECT_FALSE(aom_film_grain_table_lookup(&table, 2000, 3000, false, &grain));
EXPECT_EQ(0, table.head);
EXPECT_EQ(0, table.tail);
aom_film_grain_table_free(&table);
}
TEST(FilmGrainTableTest, SplitSingleSegment) {
aom_film_grain_table_t table;
aom_film_grain_t grain;
memset(&table, 0, sizeof(table));
aom_film_grain_table_append(&table, 0, 1000, film_grain_test_vectors + 0);
// Test lookup and remove that adjusts start time
EXPECT_TRUE(aom_film_grain_table_lookup(&table, 0, 100, true, &grain));
EXPECT_EQ(NULL, table.head->next);
EXPECT_EQ(100, table.head->start_time);
// Test lookup and remove that adjusts end time
EXPECT_TRUE(aom_film_grain_table_lookup(&table, 900, 1000, true, &grain));
EXPECT_EQ(NULL, table.head->next);
EXPECT_EQ(100, table.head->start_time);
EXPECT_EQ(900, table.head->end_time);
// Test lookup and remove that splits the first entry
EXPECT_TRUE(aom_film_grain_table_lookup(&table, 400, 600, true, &grain));
EXPECT_EQ(100, table.head->start_time);
EXPECT_EQ(400, table.head->end_time);
ASSERT_NE((void *)NULL, table.head->next);
EXPECT_EQ(table.tail, table.head->next);
EXPECT_EQ(600, table.head->next->start_time);
EXPECT_EQ(900, table.head->next->end_time);
aom_film_grain_table_free(&table);
}
TEST(FilmGrainTableTest, AddAndLookupMultipleSegments) {
aom_film_grain_table_t table;
memset(&table, 0, sizeof(table));
aom_film_grain_t grain;
const int kNumTestVectors =
sizeof(film_grain_test_vectors) / sizeof(film_grain_test_vectors[0]);
for (int i = 0; i < kNumTestVectors; ++i) {
aom_film_grain_table_append(&table, i * 1000, (i + 1) * 1000,
film_grain_test_vectors + i);
}
for (int i = kNumTestVectors - 1; i >= 0; --i) {
EXPECT_TRUE(aom_film_grain_table_lookup(&table, i * 1000, (i + 1) * 1000,
true, &grain));
grain_equal(film_grain_test_vectors + i, &grain);
EXPECT_FALSE(aom_film_grain_table_lookup(&table, i * 1000, (i + 1) * 1000,
true, &grain));
}
// Verify that all the data has been removed
for (int i = 0; i < kNumTestVectors; ++i) {
EXPECT_FALSE(aom_film_grain_table_lookup(&table, i * 1000, (i + 1) * 1000,
true, &grain));
}
aom_film_grain_table_free(&table);
}
class FilmGrainTableIOTest : public ::testing::Test {
protected:
void SetUp() { memset(&error_, 0, sizeof(error_)); }
struct aom_internal_error_info error_;
};
TEST_F(FilmGrainTableIOTest, ReadMissingFile) {
aom_film_grain_table_t table;
memset(&table, 0, sizeof(table));
ASSERT_EQ(AOM_CODEC_ERROR, aom_film_grain_table_read(
&table, "/path/to/missing/file", &error_));
}
TEST_F(FilmGrainTableIOTest, ReadTruncatedFile) {
aom_film_grain_table_t table;
memset(&table, 0, sizeof(table));
std::string grain_file;
FILE *file = libaom_test::GetTempOutFile(&grain_file);
fwrite("deadbeef", 8, 1, file);
fclose(file);
ASSERT_EQ(AOM_CODEC_ERROR,
aom_film_grain_table_read(&table, grain_file.c_str(), &error_));
EXPECT_EQ(0, remove(grain_file.c_str()));
}
TEST_F(FilmGrainTableIOTest, RoundTripReadWrite) {
aom_film_grain_table_t table;
memset(&table, 0, sizeof(table));
aom_film_grain_t expected_grain[16];
const int kNumTestVectors =
sizeof(film_grain_test_vectors) / sizeof(film_grain_test_vectors[0]);
for (int i = 0; i < kNumTestVectors; ++i) {
expected_grain[i] = film_grain_test_vectors[i];
expected_grain[i].random_seed = i;
expected_grain[i].update_parameters = i % 2;
expected_grain[i].apply_grain = (i + 1) % 2;
expected_grain[i].bit_depth = 0;
aom_film_grain_table_append(&table, i * 1000, (i + 1) * 1000,
expected_grain + i);
}
std::string grain_file;
fclose(libaom_test::GetTempOutFile(&grain_file));
ASSERT_EQ(AOM_CODEC_OK,
aom_film_grain_table_write(&table, grain_file.c_str(), &error_));
aom_film_grain_table_free(&table);
memset(&table, 0, sizeof(table));
ASSERT_EQ(AOM_CODEC_OK,
aom_film_grain_table_read(&table, grain_file.c_str(), &error_));
for (int i = 0; i < kNumTestVectors; ++i) {
aom_film_grain_t grain;
EXPECT_TRUE(aom_film_grain_table_lookup(&table, i * 1000, (i + 1) * 1000,
true, &grain));
grain_equal(expected_grain + i, &grain);
}
aom_film_grain_table_free(&table);
EXPECT_EQ(0, remove(grain_file.c_str()));
}
TEST_F(FilmGrainTableIOTest, RoundTripSplit) {
std::string grain_file;
fclose(libaom_test::GetTempOutFile(&grain_file));
aom_film_grain_table_t table;
memset(&table, 0, sizeof(table));
aom_film_grain_t grain = film_grain_test_vectors[0];
aom_film_grain_table_append(&table, 0, 3000, &grain);
ASSERT_TRUE(aom_film_grain_table_lookup(&table, 1000, 2000, true, &grain));
ASSERT_TRUE(aom_film_grain_table_lookup(&table, 0, 1000, false, &grain));
EXPECT_FALSE(aom_film_grain_table_lookup(&table, 1000, 2000, false, &grain));
ASSERT_TRUE(aom_film_grain_table_lookup(&table, 2000, 3000, false, &grain));
ASSERT_EQ(AOM_CODEC_OK,
aom_film_grain_table_write(&table, grain_file.c_str(), &error_));
aom_film_grain_table_free(&table);
memset(&table, 0, sizeof(table));
ASSERT_EQ(AOM_CODEC_OK,
aom_film_grain_table_read(&table, grain_file.c_str(), &error_));
ASSERT_TRUE(aom_film_grain_table_lookup(&table, 0, 1000, false, &grain));
ASSERT_FALSE(aom_film_grain_table_lookup(&table, 1000, 2000, false, &grain));
ASSERT_TRUE(aom_film_grain_table_lookup(&table, 2000, 3000, false, &grain));
aom_film_grain_table_free(&table);
EXPECT_EQ(0, remove(grain_file.c_str()));
}
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