2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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.
13 #include "vp8/encoder/boolhuff.h"
14 #include "vp8/decoder/dboolhuff.h"
23 #include <sys/types.h>
25 #include "third_party/googletest/src/include/gtest/gtest.h"
27 typedef unsigned char uint8_t;
31 const int num_tests = 10;
36 ACMRandom(int seed) { Reset(seed);}
38 void Reset(int seed) { srand(seed); }
40 uint8_t Rand8(void) { return (rand() >> 8) & 0xff; }
42 int PseudoUniform(int range) { return (rand() >> 8) % range; }
44 int operator()(int n) { return PseudoUniform(n); }
46 static int DeterministicSeed(void) { return 0xbaba; }
52 ACMRandom rnd(ACMRandom::DeterministicSeed());
53 for (int n = 0; n < num_tests; ++n)
55 for (int method = 0; method <= 7; ++method)
56 { // we generate various proba
57 const int bits_to_test = 1000;
59 uint8_t probas[bits_to_test];
61 for (int i = 0; i < bits_to_test; ++i)
63 const int parity = i & 1;
68 (method == 3) ? rnd.Rand8() :
69 (method == 4) ? (parity ? 0 : 255) :
70 // alternate between low and high proba:
71 (method == 5) ? (parity ? rnd(128) : 255 - rnd(128)) :
73 (parity ? rnd(64) : 255 - rnd(64)) :
74 (parity ? rnd(32) : 255 - rnd(32));
76 for (int bit_method = 0; bit_method <= 3; ++bit_method)
78 const int random_seed = 6432;
79 const int buffer_size = 10000;
80 ACMRandom bit_rnd(random_seed);
82 uint8_t bw_buffer[buffer_size];
83 vp8_start_encode(&bw, bw_buffer, bw_buffer + buffer_size);
85 int bit = (bit_method == 0) ? 0 : (bit_method == 1) ? 1 : 0;
86 for (int i = 0; i < bits_to_test; ++i)
92 else if (bit_method == 3)
96 vp8_encode_bool(&bw, bit, (int) probas[i]);
102 vp8dx_start_decode(&br, bw_buffer, buffer_size);
103 bit_rnd.Reset(random_seed);
104 for (int i = 0; i < bits_to_test; ++i)
110 else if (bit_method == 3)
114 GTEST_ASSERT_EQ(vp8dx_decode_bool(&br, probas[i]), bit)
116 << i << " / " << bits_to_test << " bit_method: "
117 << bit_method << " method: " << method;
125 int main(int argc, char **argv)
127 ::testing::InitGoogleTest(&argc, argv);
128 return RUN_ALL_TESTS();