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/mpeg1_audio_stream_parser.h"
8 #include "testing/gtest/include/gtest/gtest.h"
12 class MPEG1AudioStreamParserTest
13 : public StreamParserTestBase, public testing::Test {
15 MPEG1AudioStreamParserTest()
16 : StreamParserTestBase(
17 scoped_ptr<StreamParser>(new MPEG1AudioStreamParser()).Pass()) {}
18 virtual ~MPEG1AudioStreamParserTest() {}
21 // Test parsing with small prime sized chunks to smoke out "power of
22 // 2" field size assumptions.
23 TEST_F(MPEG1AudioStreamParserTest, UnalignedAppend) {
24 const std::string expected =
43 EXPECT_EQ(expected, ParseFile("sfx.mp3", 17));
44 EXPECT_GT(last_audio_config().codec_delay(), 0);
47 // Test parsing with a larger piece size to verify that multiple buffers
48 // are passed to |new_buffer_cb_|.
49 TEST_F(MPEG1AudioStreamParserTest, UnalignedAppend512) {
50 const std::string expected =
59 EXPECT_EQ(expected, ParseFile("sfx.mp3", 512));
60 EXPECT_GT(last_audio_config().codec_delay(), 0);
63 TEST_F(MPEG1AudioStreamParserTest, MetadataParsing) {
64 scoped_refptr<DecoderBuffer> buffer = ReadTestDataFile("sfx.mp3");
65 const uint8_t* buffer_ptr = buffer->data();
67 // The first 32 bytes of sfx.mp3 are an ID3 tag, so no segments should be
68 // extracted after appending those bytes.
69 const int kId3TagSize = 32;
70 EXPECT_EQ("", ParseData(buffer_ptr, kId3TagSize));
71 EXPECT_FALSE(last_audio_config().IsValidConfig());
72 buffer_ptr += kId3TagSize;
74 // The next 417 bytes are a Xing frame; with the identifier 21 bytes into
75 // the frame. Appending less than 21 bytes, should result in no segments
76 // nor an AudioDecoderConfig being created.
77 const int kXingTagPosition = 21;
78 EXPECT_EQ("", ParseData(buffer_ptr, kXingTagPosition));
79 EXPECT_FALSE(last_audio_config().IsValidConfig());
80 buffer_ptr += kXingTagPosition;
82 // Appending the rests of the Xing frame should result in no segments, but
83 // should generate a valid AudioDecoderConfig.
84 const int kXingRemainingSize = 417 - kXingTagPosition;
85 EXPECT_EQ("", ParseData(buffer_ptr, kXingRemainingSize));
86 EXPECT_TRUE(last_audio_config().IsValidConfig());
87 buffer_ptr += kXingRemainingSize;
89 // Append the first real frame and ensure we get a segment.
90 const int kFirstRealFrameSize = 182;
91 EXPECT_EQ("NewSegment{ 0K }EndOfSegment",
92 ParseData(buffer_ptr, kFirstRealFrameSize));
93 EXPECT_TRUE(last_audio_config().IsValidConfig());