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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "media/formats/webm/webm_info_parser.h" | 5 #include "media/formats/webm/webm_info_parser.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "media/formats/webm/webm_constants.h" | 8 #include "media/formats/webm/webm_constants.h" |
9 | 9 |
10 namespace media { | 10 namespace media { |
11 | 11 |
12 // Default timecode scale if the TimecodeScale element is | 12 // Default timecode scale if the TimecodeScale element is |
13 // not specified in the INFO element. | 13 // not specified in the INFO element. |
14 static const int kWebMDefaultTimecodeScale = 1000000; | 14 static const int kWebMDefaultTimecodeScale = 1000000; |
15 | 15 |
16 WebMInfoParser::WebMInfoParser() | 16 WebMInfoParser::WebMInfoParser() |
17 : timecode_scale_(-1), | 17 : timecode_scale_(-1), |
18 duration_(-1) { | 18 duration_(-1) { |
19 } | 19 } |
20 | 20 |
21 WebMInfoParser::~WebMInfoParser() {} | 21 WebMInfoParser::~WebMInfoParser() {} |
22 | 22 |
23 int WebMInfoParser::Parse(const uint8* buf, int size) { | 23 int WebMInfoParser::Parse(const uint8_t* buf, int size) { |
24 timecode_scale_ = -1; | 24 timecode_scale_ = -1; |
25 duration_ = -1; | 25 duration_ = -1; |
26 | 26 |
27 WebMListParser parser(kWebMIdInfo, this); | 27 WebMListParser parser(kWebMIdInfo, this); |
28 int result = parser.Parse(buf, size); | 28 int result = parser.Parse(buf, size); |
29 | 29 |
30 if (result <= 0) | 30 if (result <= 0) |
31 return result; | 31 return result; |
32 | 32 |
33 // For now we do all or nothing parsing. | 33 // For now we do all or nothing parsing. |
34 return parser.IsParsingComplete() ? result : 0; | 34 return parser.IsParsingComplete() ? result : 0; |
35 } | 35 } |
36 | 36 |
37 WebMParserClient* WebMInfoParser::OnListStart(int id) { return this; } | 37 WebMParserClient* WebMInfoParser::OnListStart(int id) { return this; } |
38 | 38 |
39 bool WebMInfoParser::OnListEnd(int id) { | 39 bool WebMInfoParser::OnListEnd(int id) { |
40 if (id == kWebMIdInfo && timecode_scale_ == -1) { | 40 if (id == kWebMIdInfo && timecode_scale_ == -1) { |
41 // Set timecode scale to default value if it isn't present in | 41 // Set timecode scale to default value if it isn't present in |
42 // the Info element. | 42 // the Info element. |
43 timecode_scale_ = kWebMDefaultTimecodeScale; | 43 timecode_scale_ = kWebMDefaultTimecodeScale; |
44 } | 44 } |
45 return true; | 45 return true; |
46 } | 46 } |
47 | 47 |
48 bool WebMInfoParser::OnUInt(int id, int64 val) { | 48 bool WebMInfoParser::OnUInt(int id, int64_t val) { |
49 if (id != kWebMIdTimecodeScale) | 49 if (id != kWebMIdTimecodeScale) |
50 return true; | 50 return true; |
51 | 51 |
52 if (timecode_scale_ != -1) { | 52 if (timecode_scale_ != -1) { |
53 DVLOG(1) << "Multiple values for id " << std::hex << id << " specified"; | 53 DVLOG(1) << "Multiple values for id " << std::hex << id << " specified"; |
54 return false; | 54 return false; |
55 } | 55 } |
56 | 56 |
57 timecode_scale_ = val; | 57 timecode_scale_ = val; |
58 return true; | 58 return true; |
59 } | 59 } |
60 | 60 |
61 bool WebMInfoParser::OnFloat(int id, double val) { | 61 bool WebMInfoParser::OnFloat(int id, double val) { |
62 if (id != kWebMIdDuration) { | 62 if (id != kWebMIdDuration) { |
63 DVLOG(1) << "Unexpected float for id" << std::hex << id; | 63 DVLOG(1) << "Unexpected float for id" << std::hex << id; |
64 return false; | 64 return false; |
65 } | 65 } |
66 | 66 |
67 if (duration_ != -1) { | 67 if (duration_ != -1) { |
68 DVLOG(1) << "Multiple values for duration."; | 68 DVLOG(1) << "Multiple values for duration."; |
69 return false; | 69 return false; |
70 } | 70 } |
71 | 71 |
72 duration_ = val; | 72 duration_ = val; |
73 return true; | 73 return true; |
74 } | 74 } |
75 | 75 |
76 bool WebMInfoParser::OnBinary(int id, const uint8* data, int size) { | 76 bool WebMInfoParser::OnBinary(int id, const uint8_t* data, int size) { |
77 if (id == kWebMIdDateUTC) { | 77 if (id == kWebMIdDateUTC) { |
78 if (size != 8) | 78 if (size != 8) |
79 return false; | 79 return false; |
80 | 80 |
81 int64 date_in_nanoseconds = 0; | 81 int64_t date_in_nanoseconds = 0; |
82 for (int i = 0; i < size; ++i) | 82 for (int i = 0; i < size; ++i) |
83 date_in_nanoseconds = (date_in_nanoseconds << 8) | data[i]; | 83 date_in_nanoseconds = (date_in_nanoseconds << 8) | data[i]; |
84 | 84 |
85 base::Time::Exploded exploded_epoch; | 85 base::Time::Exploded exploded_epoch; |
86 exploded_epoch.year = 2001; | 86 exploded_epoch.year = 2001; |
87 exploded_epoch.month = 1; | 87 exploded_epoch.month = 1; |
88 exploded_epoch.day_of_month = 1; | 88 exploded_epoch.day_of_month = 1; |
89 exploded_epoch.hour = 0; | 89 exploded_epoch.hour = 0; |
90 exploded_epoch.minute = 0; | 90 exploded_epoch.minute = 0; |
91 exploded_epoch.second = 0; | 91 exploded_epoch.second = 0; |
92 exploded_epoch.millisecond = 0; | 92 exploded_epoch.millisecond = 0; |
93 date_utc_ = base::Time::FromUTCExploded(exploded_epoch) + | 93 date_utc_ = base::Time::FromUTCExploded(exploded_epoch) + |
94 base::TimeDelta::FromMicroseconds(date_in_nanoseconds / 1000); | 94 base::TimeDelta::FromMicroseconds(date_in_nanoseconds / 1000); |
95 } | 95 } |
96 return true; | 96 return true; |
97 } | 97 } |
98 | 98 |
99 bool WebMInfoParser::OnString(int id, const std::string& str) { | 99 bool WebMInfoParser::OnString(int id, const std::string& str) { |
100 return true; | 100 return true; |
101 } | 101 } |
102 | 102 |
103 } // namespace media | 103 } // namespace media |
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