1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "media/filters/h264_bit_reader.h" 6 #include "testing/gtest/include/gtest/gtest.h" 7 8 namespace media { 9 10 TEST(H264BitReaderTest, ReadStreamWithoutEscapeAndTrailingZeroBytes) { 11 H264BitReader reader; 12 const unsigned char rbsp[] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xa0}; 13 int dummy = 0; 14 15 EXPECT_TRUE(reader.Initialize(rbsp, sizeof(rbsp))); 16 17 EXPECT_TRUE(reader.ReadBits(1, &dummy)); 18 EXPECT_EQ(dummy, 0x00); 19 EXPECT_EQ(reader.NumBitsLeft(), 47); 20 EXPECT_TRUE(reader.HasMoreRBSPData()); 21 22 EXPECT_TRUE(reader.ReadBits(8, &dummy)); 23 EXPECT_EQ(dummy, 0x02); 24 EXPECT_EQ(reader.NumBitsLeft(), 39); 25 EXPECT_TRUE(reader.HasMoreRBSPData()); 26 27 EXPECT_TRUE(reader.ReadBits(31, &dummy)); 28 EXPECT_EQ(dummy, 0x23456789); 29 EXPECT_EQ(reader.NumBitsLeft(), 8); 30 EXPECT_TRUE(reader.HasMoreRBSPData()); 31 32 EXPECT_TRUE(reader.ReadBits(1, &dummy)); 33 EXPECT_EQ(dummy, 1); 34 EXPECT_EQ(reader.NumBitsLeft(), 7); 35 EXPECT_TRUE(reader.HasMoreRBSPData()); 36 37 EXPECT_TRUE(reader.ReadBits(1, &dummy)); 38 EXPECT_EQ(dummy, 0); 39 EXPECT_EQ(reader.NumBitsLeft(), 6); 40 EXPECT_FALSE(reader.HasMoreRBSPData()); 41 } 42 43 TEST(H264BitReaderTest, SingleByteStream) { 44 H264BitReader reader; 45 const unsigned char rbsp[] = {0x18}; 46 int dummy = 0; 47 48 EXPECT_TRUE(reader.Initialize(rbsp, sizeof(rbsp))); 49 EXPECT_EQ(reader.NumBitsLeft(), 8); 50 EXPECT_TRUE(reader.HasMoreRBSPData()); 51 52 EXPECT_TRUE(reader.ReadBits(4, &dummy)); 53 EXPECT_EQ(dummy, 0x01); 54 EXPECT_EQ(reader.NumBitsLeft(), 4); 55 EXPECT_FALSE(reader.HasMoreRBSPData()); 56 } 57 58 TEST(H264BitReaderTest, StopBitOccupyFullByte) { 59 H264BitReader reader; 60 const unsigned char rbsp[] = {0xab, 0x80}; 61 int dummy = 0; 62 63 EXPECT_TRUE(reader.Initialize(rbsp, sizeof(rbsp))); 64 EXPECT_EQ(reader.NumBitsLeft(), 16); 65 EXPECT_TRUE(reader.HasMoreRBSPData()); 66 67 EXPECT_TRUE(reader.ReadBits(8, &dummy)); 68 EXPECT_EQ(dummy, 0xab); 69 EXPECT_EQ(reader.NumBitsLeft(), 8); 70 EXPECT_FALSE(reader.HasMoreRBSPData()); 71 } 72 73 } // namespace media 74
