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.
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"
12 class MP3StreamParserTest : public StreamParserTestBase, public testing::Test {
15 : StreamParserTestBase(
16 scoped_ptr<StreamParser>(new MP3StreamParser()).Pass()) {}
17 virtual ~MP3StreamParserTest() {}
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 =
42 EXPECT_EQ(expected, ParseFile("sfx.mp3", 17));
43 EXPECT_GT(last_audio_config().codec_delay(), 0);
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 =
58 EXPECT_EQ(expected, ParseFile("sfx.mp3", 512));
59 EXPECT_GT(last_audio_config().codec_delay(), 0);
62 TEST_F(MP3StreamParserTest, MetadataParsing) {
63 scoped_refptr<DecoderBuffer> buffer = ReadTestDataFile("sfx.mp3");
64 const uint8_t* buffer_ptr = buffer->data();
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;
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;
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;
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());