1 /* 2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 extern "C" { 12 #include "vp8/encoder/boolhuff.h" 13 #include "vp8/decoder/dboolhuff.h" 14 } 15 16 #include <math.h> 17 #include <stddef.h> 18 #include <stdio.h> 19 #include <stdlib.h> 20 #include <string.h> 21 #include <sys/types.h> 22 23 #include "test/acm_random.h" 24 #include "third_party/googletest/src/include/gtest/gtest.h" 25 #include "vpx/vpx_integer.h" 26 27 namespace { 28 const int num_tests = 10; 29 } // namespace 30 31 using libvpx_test::ACMRandom; 32 33 TEST(VP8, TestBitIO) { 34 ACMRandom rnd(ACMRandom::DeterministicSeed()); 35 for (int n = 0; n < num_tests; ++n) { 36 for (int method = 0; method <= 7; ++method) { // we generate various proba 37 const int bits_to_test = 1000; 38 uint8_t probas[bits_to_test]; 39 40 for (int i = 0; i < bits_to_test; ++i) { 41 const int parity = i & 1; 42 probas[i] = 43 (method == 0) ? 0 : (method == 1) ? 255 : 44 (method == 2) ? 128 : 45 (method == 3) ? rnd.Rand8() : 46 (method == 4) ? (parity ? 0 : 255) : 47 // alternate between low and high proba: 48 (method == 5) ? (parity ? rnd(128) : 255 - rnd(128)) : 49 (method == 6) ? 50 (parity ? rnd(64) : 255 - rnd(64)) : 51 (parity ? rnd(32) : 255 - rnd(32)); 52 } 53 for (int bit_method = 0; bit_method <= 3; ++bit_method) { 54 const int random_seed = 6432; 55 const int buffer_size = 10000; 56 ACMRandom bit_rnd(random_seed); 57 BOOL_CODER bw; 58 uint8_t bw_buffer[buffer_size]; 59 vp8_start_encode(&bw, bw_buffer, bw_buffer + buffer_size); 60 61 int bit = (bit_method == 0) ? 0 : (bit_method == 1) ? 1 : 0; 62 for (int i = 0; i < bits_to_test; ++i) { 63 if (bit_method == 2) { 64 bit = (i & 1); 65 } else if (bit_method == 3) { 66 bit = bit_rnd(2); 67 } 68 vp8_encode_bool(&bw, bit, static_cast<int>(probas[i])); 69 } 70 71 vp8_stop_encode(&bw); 72 73 BOOL_DECODER br; 74 vp8dx_start_decode(&br, bw_buffer, buffer_size); 75 bit_rnd.Reset(random_seed); 76 for (int i = 0; i < bits_to_test; ++i) { 77 if (bit_method == 2) { 78 bit = (i & 1); 79 } else if (bit_method == 3) { 80 bit = bit_rnd(2); 81 } 82 GTEST_ASSERT_EQ(vp8dx_decode_bool(&br, probas[i]), bit) 83 << "pos: "<< i << " / " << bits_to_test 84 << " bit_method: " << bit_method 85 << " method: " << method; 86 } 87 } 88 } 89 } 90 } 91
