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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 #ifndef MEDIA_BASE_MIME_UTIL_H_ | |
scherkus (not reviewing)
2014/07/18 02:00:00
blank line before this
acolwell GONE FROM CHROMIUM
2014/07/18 16:17:12
Done.
| |
5 #define MEDIA_BASE_MIME_UTIL_H_ | |
6 | |
7 #include <string> | |
8 #include <vector> | |
9 | |
10 #include "base/files/file_path.h" | |
11 #include "media/base/media_export.h" | |
12 | |
13 namespace media { | |
14 | |
15 MEDIA_EXPORT bool IsSupportedMediaMimeType(const std::string& mime_type); | |
16 | |
17 // Returns true if and only if all codecs are supported, false otherwise. | |
18 MEDIA_EXPORT bool AreSupportedMediaCodecs( | |
19 const std::vector<std::string>& codecs); | |
20 | |
21 // Parses a codec string, populating |codecs_out| with the prefix of each codec | |
22 // in the string |codecs_in|. For example, passed "aaa.b.c,dd.eee", if | |
23 // |strip| == true |codecs_out| will contain {"aaa", "dd"}, if |strip| == false | |
24 // |codecs_out| will contain {"aaa.b.c", "dd.eee"}. | |
25 // See http://www.ietf.org/rfc/rfc4281.txt. | |
26 MEDIA_EXPORT void ParseCodecString(const std::string& codecs, | |
27 std::vector<std::string>* codecs_out, | |
28 bool strip); | |
29 | |
30 // Check to see if a particular MIME type is in our list which only supports a | |
31 // certain subset of codecs. | |
32 MEDIA_EXPORT bool IsStrictMediaMimeType(const std::string& mime_type); | |
33 | |
34 // Indicates that the MIME type and (possible codec string) are supported by the | |
35 // underlying platform. | |
36 enum SupportsType { | |
37 // The underlying platform is known not to support the given MIME type and | |
38 // codec combination. | |
39 IsNotSupported, | |
40 | |
41 // The underlying platform is known to support the given MIME type and codec | |
42 // combination. | |
43 IsSupported, | |
44 | |
45 // The underlying platform is unsure whether the given MIME type and codec | |
46 // combination can be rendered or not before actually trying to play it. | |
47 MayBeSupported | |
48 }; | |
49 | |
50 // Checks the |mime_type| and |codecs| against the MIME types known to support | |
51 // only a particular subset of codecs. | |
52 // * Returns IsSupported if the |mime_type| is supported and all the codecs | |
53 // within the |codecs| are supported for the |mime_type|. | |
54 // * Returns MayBeSupported if the |mime_type| is supported and is known to | |
55 // support only a subset of codecs, but |codecs| was empty. Also returned if | |
56 // all the codecs in |codecs| are supported, but additional codec parameters | |
57 // were supplied (such as profile) for which the support cannot be decided. | |
58 // * Returns IsNotSupported if either the |mime_type| is not supported or the | |
59 // |mime_type| is supported but at least one of the codecs within |codecs| is | |
60 // not supported for the |mime_type|. | |
61 MEDIA_EXPORT SupportsType IsSupportedStrictMediaMimeType( | |
62 const std::string& mime_type, | |
63 const std::vector<std::string>& codecs); | |
64 | |
65 // Get the extensions associated with the given mime type. This should be passed | |
66 // in lower case. There could be multiple extensions for a given mime type, like | |
67 // "html,htm" for "text/html", or "txt,text,html,..." for "text/*". | |
68 // Note that we do not erase the existing elements in the the provided vector. | |
69 // Instead, we append the result to it. | |
70 MEDIA_EXPORT void GetExtensionsForMimeType( | |
scherkus (not reviewing)
2014/07/18 02:00:00
this isn't implemented
acolwell GONE FROM CHROMIUM
2014/07/18 16:17:12
removed
| |
71 const std::string& mime_type, | |
72 std::vector<base::FilePath::StringType>* extensions); | |
73 | |
74 // Test only method that removes proprietary media types and codecs from the | |
75 // list of supported MIME types and codecs. These types and codecs must be | |
76 // removed to ensure consistent layout test results across all Chromium | |
77 // variations. | |
78 MEDIA_EXPORT void RemoveProprietaryMediaTypesAndCodecsForTests(); | |
79 | |
80 } // namespace media | |
81 | |
82 #endif // MEDIA_BASE_MIME_UTIL_H_ | |
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