accounting_test.cc (2511B)
1 /* 2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved. 3 * 4 * This source code is subject to the terms of the BSD 2 Clause License and 5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License 6 * was not distributed with this source code in the LICENSE file, you can 7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open 8 * Media Patent License 1.0 was not distributed with this source code in the 9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent. 10 */ 11 12 #include <math.h> 13 #include <stdlib.h> 14 #include <string.h> 15 16 #include "gtest/gtest.h" 17 18 #include "test/acm_random.h" 19 #include "aom/aom_integer.h" 20 #include "aom_dsp/bitreader.h" 21 #include "aom_dsp/bitwriter.h" 22 23 using libaom_test::ACMRandom; 24 25 TEST(AV1, TestAccounting) { 26 const int kBufferSize = 10000; 27 const int kSymbols = 1024; 28 aom_writer bw; 29 uint8_t bw_buffer[kBufferSize]; 30 aom_start_encode(&bw, bw_buffer); 31 for (int i = 0; i < kSymbols; i++) { 32 aom_write(&bw, 0, 32); 33 aom_write(&bw, 0, 32); 34 aom_write(&bw, 0, 32); 35 } 36 GTEST_ASSERT_GE(aom_stop_encode(&bw), 0); 37 aom_reader br; 38 aom_reader_init(&br, bw_buffer, bw.pos); 39 40 Accounting accounting; 41 aom_accounting_init(&accounting); 42 br.accounting = &accounting; 43 for (int i = 0; i < kSymbols; i++) { 44 aom_read(&br, 32, "A"); 45 } 46 // Consecutive symbols that are the same are coalesced. 47 GTEST_ASSERT_EQ(accounting.syms.num_syms, 1); 48 GTEST_ASSERT_EQ(accounting.syms.syms[0].samples, (unsigned int)kSymbols); 49 50 aom_accounting_reset(&accounting); 51 GTEST_ASSERT_EQ(accounting.syms.num_syms, 0); 52 53 // Should record 2 * kSymbols accounting symbols. 54 aom_reader_init(&br, bw_buffer, bw.pos); 55 br.accounting = &accounting; 56 for (int i = 0; i < kSymbols; i++) { 57 aom_read(&br, 32, "A"); 58 aom_read(&br, 32, "B"); 59 aom_read(&br, 32, "B"); 60 } 61 GTEST_ASSERT_EQ(accounting.syms.num_syms, kSymbols * 2); 62 uint32_t tell_frac = aom_reader_tell_frac(&br); 63 for (int i = 0; i < accounting.syms.num_syms; i++) { 64 tell_frac -= accounting.syms.syms[i].bits; 65 } 66 GTEST_ASSERT_EQ(tell_frac, 0U); 67 68 GTEST_ASSERT_EQ(aom_accounting_dictionary_lookup(&accounting, "A"), 69 aom_accounting_dictionary_lookup(&accounting, "A")); 70 71 // Check for collisions. The current aom_accounting_hash function returns 72 // the same hash code for AB and BA. 73 GTEST_ASSERT_NE(aom_accounting_dictionary_lookup(&accounting, "AB"), 74 aom_accounting_dictionary_lookup(&accounting, "BA")); 75 }