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| 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/base/test_data_util.h" | |
| 6 #include "media/formats/common/stream_parser_test_base.h" | |
| 7 #include "media/formats/mpeg/mp3_stream_parser.h" | |
| 8 #include "testing/gtest/include/gtest/gtest.h" | |
| 9 | |
| 10 namespace media { | |
| 11 | |
| 12 class MP3StreamParserTest : public StreamParserTestBase, public testing::Test { | |
| 13 public: | |
| 14 MP3StreamParserTest() | |
| 15 : StreamParserTestBase( | |
| 16 scoped_ptr<StreamParser>(new MP3StreamParser()).Pass()) {} | |
| 17 virtual ~MP3StreamParserTest() {} | |
| 18 }; | |
| 19 | |
| 20 // Test parsing with small prime sized chunks to smoke out "power of | |
| 21 // 2" field size assumptions. | |
| 22 TEST_F(MP3StreamParserTest, UnalignedAppend) { | |
| 23 const std::string expected = | |
| 24 "NewSegment" | |
| 25 "{ 0K }" | |
| 26 "{ 0K }" | |
| 27 "{ 0K }" | |
| 28 "{ 0K }" | |
| 29 "{ 0K }" | |
| 30 "{ 0K }" | |
| 31 "{ 0K }" | |
| 32 "EndOfSegment" | |
| 33 "NewSegment" | |
| 34 "{ 0K }" | |
| 35 "{ 0K }" | |
| 36 "{ 0K }" | |
| 37 "EndOfSegment" | |
| 38 "NewSegment" | |
| 39 "{ 0K }" | |
| 40 "{ 0K }" | |
| 41 "EndOfSegment"; | |
| 42 EXPECT_EQ(expected, ParseFile("sfx.mp3", 17)); | |
| 43 EXPECT_GT(last_audio_config().codec_delay(), 0); | |
| 44 } | |
| 45 | |
| 46 // Test parsing with a larger piece size to verify that multiple buffers | |
| 47 // are passed to |new_buffer_cb_|. | |
| 48 TEST_F(MP3StreamParserTest, UnalignedAppend512) { | |
| 49 const std::string expected = | |
| 50 "NewSegment" | |
| 51 "{ 0K 26K 52K 78K }" | |
| 52 "EndOfSegment" | |
| 53 "NewSegment" | |
| 54 "{ 0K 26K 52K }" | |
| 55 "{ 0K 26K 52K 78K }" | |
| 56 "{ 0K }" | |
| 57 "EndOfSegment"; | |
| 58 EXPECT_EQ(expected, ParseFile("sfx.mp3", 512)); | |
| 59 EXPECT_GT(last_audio_config().codec_delay(), 0); | |
| 60 } | |
| 61 | |
| 62 TEST_F(MP3StreamParserTest, MetadataParsing) { | |
| 63 scoped_refptr<DecoderBuffer> buffer = ReadTestDataFile("sfx.mp3"); | |
| 64 const uint8_t* buffer_ptr = buffer->data(); | |
| 65 | |
| 66 // The first 32 bytes of sfx.mp3 are an ID3 tag, so no segments should be | |
| 67 // extracted after appending those bytes. | |
| 68 const int kId3TagSize = 32; | |
| 69 EXPECT_EQ("", ParseData(buffer_ptr, kId3TagSize)); | |
| 70 EXPECT_FALSE(last_audio_config().IsValidConfig()); | |
| 71 buffer_ptr += kId3TagSize; | |
| 72 | |
| 73 // The next 417 bytes are a Xing frame; with the identifier 21 bytes into | |
| 74 // the frame. Appending less than 21 bytes, should result in no segments | |
| 75 // nor an AudioDecoderConfig being created. | |
| 76 const int kXingTagPosition = 21; | |
| 77 EXPECT_EQ("", ParseData(buffer_ptr, kXingTagPosition)); | |
| 78 EXPECT_FALSE(last_audio_config().IsValidConfig()); | |
| 79 buffer_ptr += kXingTagPosition; | |
| 80 | |
| 81 // Appending the rests of the Xing frame should result in no segments, but | |
| 82 // should generate a valid AudioDecoderConfig. | |
| 83 const int kXingRemainingSize = 417 - kXingTagPosition; | |
| 84 EXPECT_EQ("", ParseData(buffer_ptr, kXingRemainingSize)); | |
| 85 EXPECT_TRUE(last_audio_config().IsValidConfig()); | |
| 86 buffer_ptr += kXingRemainingSize; | |
| 87 | |
| 88 // Append the first real frame and ensure we get a segment. | |
| 89 const int kFirstRealFrameSize = 182; | |
| 90 EXPECT_EQ("NewSegment{ 0K }EndOfSegment", | |
| 91 ParseData(buffer_ptr, kFirstRealFrameSize)); | |
| 92 EXPECT_TRUE(last_audio_config().IsValidConfig()); | |
| 93 } | |
| 94 | |
| 95 } // namespace media | |
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Chromium Code Reviews
Issue 506943003:
Support MPEG1 audio in the MPEG2-TS stream parser. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src