media/base/eme_constants.h

   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
   5 #ifndef MEDIA_BASE_EME_CONSTANTS_H_
   6 #define MEDIA_BASE_EME_CONSTANTS_H_
   7
   8 #include <stdint.h>
   9
  10 namespace media {
  11
  12 // Defines bitmask values that specify registered initialization data types used
  13 // in Encrypted Media Extensions (EME).
  14 // The mask values are stored in a SupportedInitDataTypes.
  15 enum EmeInitDataType {
  16   EME_INIT_DATA_TYPE_NONE = 0,
  17   EME_INIT_DATA_TYPE_WEBM = 1 << 0,
  18 #if defined(USE_PROPRIETARY_CODECS)
  19   EME_INIT_DATA_TYPE_CENC = 1 << 1,
  20 #endif  // defined(USE_PROPRIETARY_CODECS)
  21 };
  22
  23 // Defines bitmask values that specify codecs used in Encrypted Media Extension
  24 // (EME). Each value represents a codec within a specific container.
  25 // The mask values are stored in a SupportedCodecs.
  26 enum EmeCodec {
  27   // *_ALL values should only be used for masking, do not use them to specify
  28   // codec support because they may be extended to include more codecs.
  29   EME_CODEC_NONE = 0,
  30   EME_CODEC_WEBM_OPUS = 1 << 0,
  31   EME_CODEC_WEBM_VORBIS = 1 << 1,
  32   EME_CODEC_WEBM_AUDIO_ALL = EME_CODEC_WEBM_OPUS | EME_CODEC_WEBM_VORBIS,
  33   EME_CODEC_WEBM_VP8 = 1 << 2,
  34   EME_CODEC_WEBM_VP9 = 1 << 3,
  35   EME_CODEC_WEBM_VIDEO_ALL = (EME_CODEC_WEBM_VP8 | EME_CODEC_WEBM_VP9),
  36   EME_CODEC_WEBM_ALL = (EME_CODEC_WEBM_AUDIO_ALL | EME_CODEC_WEBM_VIDEO_ALL),
  37 #if defined(USE_PROPRIETARY_CODECS)
  38   EME_CODEC_MP4_AAC = 1 << 4,
  39   EME_CODEC_MP4_AUDIO_ALL = EME_CODEC_MP4_AAC,
  40   EME_CODEC_MP4_AVC1 = 1 << 5,
  41   EME_CODEC_MP4_VIDEO_ALL = EME_CODEC_MP4_AVC1,
  42   EME_CODEC_MP4_ALL = (EME_CODEC_MP4_AUDIO_ALL | EME_CODEC_MP4_VIDEO_ALL),
  43   EME_CODEC_ALL = (EME_CODEC_WEBM_ALL | EME_CODEC_MP4_ALL),
  44 #else
  45   EME_CODEC_ALL = EME_CODEC_WEBM_ALL,
  46 #endif  // defined(USE_PROPRIETARY_CODECS)
  47 };
  48
  49 typedef uint32_t SupportedInitDataTypes;
  50 typedef uint32_t SupportedCodecs;
  51
  52 enum EmeSessionTypeSupport {
  53   // Invalid default value.
  54   EME_SESSION_TYPE_INVALID,
  55   // The session type is not supported.
  56   EME_SESSION_TYPE_NOT_SUPPORTED,
  57   // The session type is supported if the encrypted media permission is granted.
  58   EME_SESSION_TYPE_SUPPORTED_WITH_PERMISSION,
  59   // The session type is always supported.
  60   EME_SESSION_TYPE_SUPPORTED,
  61 };
  62
  63 enum EmeFeatureSupport {
  64   // Invalid default value.
  65   EME_FEATURE_INVALID,
  66   // Access to the feature is not supported at all.
  67   EME_FEATURE_NOT_SUPPORTED,
  68   // Access to the feature may be requested if the encrypted media permission is
  69   // granted.
  70   EME_FEATURE_REQUESTABLE_WITH_PERMISSION,
  71   // Access to the feature may be requested.
  72   EME_FEATURE_REQUESTABLE,
  73   // Access to the feature cannot be blocked.
  74   EME_FEATURE_ALWAYS_ENABLED,
  75 };
  76
  77 enum EmeFeatureRequirement {
  78   EME_FEATURE_NOT_ALLOWED,
  79   EME_FEATURE_OPTIONAL,
  80   EME_FEATURE_REQUIRED,
  81 };
  82
  83 }  // namespace media
  84
  85 #endif  // MEDIA_BASE_EME_CONSTANTS_H_