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| 1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 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 #ifndef MEDIA_BASE_MIME_UTIL_INTERNAL_H_ | 5 #ifndef MEDIA_BASE_MIME_UTIL_INTERNAL_H_ |
| 6 #define MEDIA_BASE_MIME_UTIL_INTERNAL_H_ | 6 #define MEDIA_BASE_MIME_UTIL_INTERNAL_H_ |
| 7 | 7 |
| 8 #include <map> | 8 #include <map> |
| 9 #include <string> | 9 #include <string> |
| 10 #include <vector> | 10 #include <vector> |
| 11 | 11 |
| 12 #include "base/containers/hash_tables.h" | 12 #include "base/containers/hash_tables.h" |
| 13 #include "base/macros.h" | 13 #include "base/macros.h" |
| 14 #include "media/base/media_export.h" | 14 #include "media/base/media_export.h" |
| 15 #include "media/base/mime_util.h" | 15 #include "media/base/mime_util.h" |
| 16 #include "media/base/video_codecs.h" | 16 #include "media/base/video_codecs.h" |
| 17 | 17 |
| 18 namespace media { | 18 namespace media { |
| 19 |
| 20 class VideoColorSpace; |
| 21 |
| 19 namespace internal { | 22 namespace internal { |
| 20 | 23 |
| 21 // Internal utility class for handling mime types. Should only be invoked by | 24 // Internal utility class for handling mime types. Should only be invoked by |
| 22 // tests and the functions within mime_util.cc -- NOT for direct use by others. | 25 // tests and the functions within mime_util.cc -- NOT for direct use by others. |
| 23 class MEDIA_EXPORT MimeUtil { | 26 class MEDIA_EXPORT MimeUtil { |
| 24 public: | 27 public: |
| 25 MimeUtil(); | 28 MimeUtil(); |
| 26 ~MimeUtil(); | 29 ~MimeUtil(); |
| 27 | 30 |
| 28 enum Codec { | 31 enum Codec { |
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| 107 // Returns true if this method was able to map |codec_id| with | 110 // Returns true if this method was able to map |codec_id| with |
| 108 // |mime_type_lower_case| to a specific Codec enum value. |codec| is only | 111 // |mime_type_lower_case| to a specific Codec enum value. |codec| is only |
| 109 // valid if true is returned. | 112 // valid if true is returned. |
| 110 // |ambiguous_codec_string| will be set to true when the codec string matches | 113 // |ambiguous_codec_string| will be set to true when the codec string matches |
| 111 // one of a small number of non-RFC compliant strings (e.g. "avc"). | 114 // one of a small number of non-RFC compliant strings (e.g. "avc"). |
| 112 // |profile| and |level| indicate video codec profile and level (unused for | 115 // |profile| and |level| indicate video codec profile and level (unused for |
| 113 // audio codecs). These will be VIDEO_CODEC_PROFILE_UNKNOWN and 0 respectively | 116 // audio codecs). These will be VIDEO_CODEC_PROFILE_UNKNOWN and 0 respectively |
| 114 // whenever |codec_id| is incomplete/invalid, or in some cases when | 117 // whenever |codec_id| is incomplete/invalid, or in some cases when |
| 115 // |ambiguous_codec_string| is set to true. | 118 // |ambiguous_codec_string| is set to true. |
| 116 // |is_encrypted| means the codec will be used with encrypted blocks. | 119 // |is_encrypted| means the codec will be used with encrypted blocks. |
| 117 // |out_eotf| is the electro-optical transfer function described by the | 120 // |out_color| is the color space described by the |
| 118 // |codec_id|. Will be gfx::ColorSpace::TransferID::INVALID for many codec | 121 // |codec_id|. |
| 119 // strings where EOTF is not described. | |
| 120 bool ParseCodecString(const std::string& mime_type_lower_case, | 122 bool ParseCodecString(const std::string& mime_type_lower_case, |
| 121 const std::string& codec_id, | 123 const std::string& codec_id, |
| 122 Codec* codec, | 124 Codec* codec, |
| 123 bool* ambiguous_codec_string, | 125 bool* ambiguous_codec_string, |
| 124 VideoCodecProfile* out_profile, | 126 VideoCodecProfile* out_profile, |
| 125 uint8_t* out_level, | 127 uint8_t* out_level, |
| 126 gfx::ColorSpace::TransferID* out_eotf) const; | 128 VideoColorSpace* out_colorspace) const; |
| 127 | 129 |
| 128 // Returns IsSupported if |codec| when platform supports codec contained in | 130 // Returns IsSupported if |codec| when platform supports codec contained in |
| 129 // |mime_type_lower_case|. Returns MayBeSupported when platform support is | 131 // |mime_type_lower_case|. Returns MayBeSupported when platform support is |
| 130 // unclear. Otherwise returns NotSupported. Note: This method will always | 132 // unclear. Otherwise returns NotSupported. Note: This method will always |
| 131 // return NotSupported for proprietary codecs if |allow_proprietary_codecs_| | 133 // return NotSupported for proprietary codecs if |allow_proprietary_codecs_| |
| 132 // is set to false. |is_encrypted| means the codec will be used with encrypted | 134 // is set to false. |is_encrypted| means the codec will be used with encrypted |
| 133 // blocks. | 135 // blocks. |
| 134 // TODO(chcunningham): Make this method return a bool. Platform support should | 136 // TODO(chcunningham): Make this method return a bool. Platform support should |
| 135 // always be knowable for a fully specified codec. | 137 // always be knowable for a fully specified codec. |
| 136 SupportsType IsCodecSupported(const std::string& mime_type_lower_case, | 138 SupportsType IsCodecSupported(const std::string& mime_type_lower_case, |
| 137 Codec codec, | 139 Codec codec, |
| 138 VideoCodecProfile video_profile, | 140 VideoCodecProfile video_profile, |
| 139 uint8_t video_level, | 141 uint8_t video_level, |
| 140 gfx::ColorSpace::TransferID eotf, | 142 const VideoColorSpace& eotf, |
| 141 bool is_encrypted) const; | 143 bool is_encrypted) const; |
| 142 | 144 |
| 143 // Wrapper around IsCodecSupported for simple codecs that are entirely | 145 // Wrapper around IsCodecSupported for simple codecs that are entirely |
| 144 // described (or implied) by the container mime-type. | 146 // described (or implied) by the container mime-type. |
| 145 SupportsType IsSimpleCodecSupported(const std::string& mime_type_lower_case, | 147 SupportsType IsSimpleCodecSupported(const std::string& mime_type_lower_case, |
| 146 Codec codec, | 148 Codec codec, |
| 147 bool is_encrypted) const; | 149 bool is_encrypted) const; |
| 148 | 150 |
| 149 // Returns true if |codec| refers to a proprietary codec. | 151 // Returns true if |codec| refers to a proprietary codec. |
| 150 bool IsCodecProprietary(Codec codec) const; | 152 bool IsCodecProprietary(Codec codec) const; |
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| 175 // Whether proprietary codec support should be advertised to callers. | 177 // Whether proprietary codec support should be advertised to callers. |
| 176 bool allow_proprietary_codecs_; | 178 bool allow_proprietary_codecs_; |
| 177 | 179 |
| 178 DISALLOW_COPY_AND_ASSIGN(MimeUtil); | 180 DISALLOW_COPY_AND_ASSIGN(MimeUtil); |
| 179 }; | 181 }; |
| 180 | 182 |
| 181 } // namespace internal | 183 } // namespace internal |
| 182 } // namespace media | 184 } // namespace media |
| 183 | 185 |
| 184 #endif // MEDIA_BASE_MIME_UTIL_INTERNAL_H_ | 186 #endif // MEDIA_BASE_MIME_UTIL_INTERNAL_H_ |
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