/* * 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 <math.h> #include <stdlib.h> #include <string.h> #include "third_party/googletest/src/googletest/include/gtest/gtest.h" #include "test/acm_random.h" #include "aom/aom_integer.h" #include "aom_dsp/bitreader.h" #include "aom_dsp/bitwriter.h" using libaom_test::ACMRandom; TEST(AV1, TestAccounting) { const int kBufferSize = 10000; const int kSymbols = 1024; aom_writer bw; uint8_t bw_buffer[kBufferSize]; aom_start_encode(&bw, bw_buffer); for (int i = 0; i < kSymbols; i++) { aom_write(&bw, 0, 32); aom_write(&bw, 0, 32); aom_write(&bw, 0, 32); } aom_stop_encode(&bw); aom_reader br; aom_reader_init(&br, bw_buffer, bw.pos); Accounting accounting; aom_accounting_init(&accounting); br.accounting = &accounting; for (int i = 0; i < kSymbols; i++) { aom_read(&br, 32, "A"); } // Consecutive symbols that are the same are coalesced. GTEST_ASSERT_EQ(accounting.syms.num_syms, 1); GTEST_ASSERT_EQ(accounting.syms.syms[0].samples, (unsigned int)kSymbols); aom_accounting_reset(&accounting); GTEST_ASSERT_EQ(accounting.syms.num_syms, 0); // Should record 2 * kSymbols accounting symbols. aom_reader_init(&br, bw_buffer, bw.pos); br.accounting = &accounting; for (int i = 0; i < kSymbols; i++) { aom_read(&br, 32, "A"); aom_read(&br, 32, "B"); aom_read(&br, 32, "B"); } GTEST_ASSERT_EQ(accounting.syms.num_syms, kSymbols * 2); uint32_t tell_frac = aom_reader_tell_frac(&br); for (int i = 0; i < accounting.syms.num_syms; i++) { tell_frac -= accounting.syms.syms[i].bits; } GTEST_ASSERT_EQ(tell_frac, 0U); GTEST_ASSERT_EQ(aom_accounting_dictionary_lookup(&accounting, "A"), aom_accounting_dictionary_lookup(&accounting, "A")); // Check for collisions. The current aom_accounting_hash function returns // the same hash code for AB and BA. GTEST_ASSERT_NE(aom_accounting_dictionary_lookup(&accounting, "AB"), aom_accounting_dictionary_lookup(&accounting, "BA")); }