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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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/webm/webm_tracks_parser.h" | 5 #include "media/webm/webm_tracks_parser.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "base/string_util.h" | 8 #include "base/string_util.h" |
9 #include "media/base/buffers.h" | 9 #include "media/base/buffers.h" |
10 #include "media/webm/webm_constants.h" | 10 #include "media/webm/webm_constants.h" |
11 #include "media/webm/webm_content_encodings.h" | 11 #include "media/webm/webm_content_encodings.h" |
12 | 12 |
13 namespace media { | 13 namespace media { |
14 | 14 |
15 // Values for TrackType element. | 15 // Values for TrackType element. |
16 static const int kWebMTrackTypeVideo = 1; | 16 static const int kWebMTrackTypeVideo = 1; |
17 static const int kWebMTrackTypeAudio = 2; | 17 static const int kWebMTrackTypeAudio = 2; |
18 | 18 |
19 WebMTracksParser::WebMTracksParser(int64 timecode_scale) | 19 WebMTracksParser::WebMTracksParser(int64 timecode_scale) |
20 : timecode_scale_(timecode_scale), | 20 : timecode_scale_(timecode_scale), |
21 track_type_(-1), | 21 track_type_(-1), |
22 track_num_(-1), | 22 track_num_(-1), |
23 audio_track_num_(-1), | 23 audio_track_num_(-1), |
24 video_track_num_(-1) { | 24 video_track_num_(-1) { |
25 } | 25 } |
26 | 26 |
27 WebMTracksParser::~WebMTracksParser() {} | 27 WebMTracksParser::~WebMTracksParser() {} |
28 | 28 |
29 const uint8* WebMTracksParser::video_encryption_key_id() const { | 29 const std::string& WebMTracksParser::video_encryption_key_id() const { |
30 if (!video_content_encodings_client_.get()) | 30 if (!video_content_encodings_client_.get()) |
31 return NULL; | 31 return EmptyString(); |
32 | 32 |
33 DCHECK(!video_content_encodings_client_->content_encodings().empty()); | 33 DCHECK(!video_content_encodings_client_->content_encodings().empty()); |
34 return video_content_encodings_client_->content_encodings()[0]-> | 34 return video_content_encodings_client_->content_encodings()[0]-> |
35 encryption_key_id(); | 35 encryption_key_id(); |
36 } | 36 } |
37 | 37 |
38 int WebMTracksParser::video_encryption_key_id_size() const { | |
39 if (!video_content_encodings_client_.get()) | |
40 return 0; | |
41 | |
42 DCHECK(!video_content_encodings_client_->content_encodings().empty()); | |
43 return video_content_encodings_client_->content_encodings()[0]-> | |
44 encryption_key_id_size(); | |
45 } | |
46 | |
47 int WebMTracksParser::Parse(const uint8* buf, int size) { | 38 int WebMTracksParser::Parse(const uint8* buf, int size) { |
48 track_type_ =-1; | 39 track_type_ =-1; |
49 track_num_ = -1; | 40 track_num_ = -1; |
50 audio_track_num_ = -1; | 41 audio_track_num_ = -1; |
51 video_track_num_ = -1; | 42 video_track_num_ = -1; |
52 | 43 |
53 WebMListParser parser(kWebMIdTracks, this); | 44 WebMListParser parser(kWebMIdTracks, this); |
54 int result = parser.Parse(buf, size); | 45 int result = parser.Parse(buf, size); |
55 | 46 |
56 if (result <= 0) | 47 if (result <= 0) |
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151 bool WebMTracksParser::OnString(int id, const std::string& str) { | 142 bool WebMTracksParser::OnString(int id, const std::string& str) { |
152 if (id == kWebMIdCodecID && str != "A_VORBIS" && str != "V_VP8") { | 143 if (id == kWebMIdCodecID && str != "A_VORBIS" && str != "V_VP8") { |
153 DVLOG(1) << "Unexpected CodecID " << str; | 144 DVLOG(1) << "Unexpected CodecID " << str; |
154 return false; | 145 return false; |
155 } | 146 } |
156 | 147 |
157 return true; | 148 return true; |
158 } | 149 } |
159 | 150 |
160 } // namespace media | 151 } // namespace media |
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