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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 WEBKIT_RENDERER_MEDIA_CRYPTO_PPAPI_CLEAR_KEY_CDM_H_ | 5 #ifndef MEDIA_CDM_PPAPI_CLEAR_KEY_CDM_H_ |
6 #define WEBKIT_RENDERER_MEDIA_CRYPTO_PPAPI_CLEAR_KEY_CDM_H_ | 6 #define MEDIA_CDM_PPAPI_CLEAR_KEY_CDM_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
12 #include "base/compiler_specific.h" | 12 #include "base/compiler_specific.h" |
13 #include "base/memory/ref_counted.h" | 13 #include "base/memory/ref_counted.h" |
14 #include "base/memory/scoped_ptr.h" | 14 #include "base/memory/scoped_ptr.h" |
15 #include "base/synchronization/lock.h" | 15 #include "base/synchronization/lock.h" |
16 #include "media/crypto/aes_decryptor.h" | 16 #include "media/cdm/aes_decryptor.h" |
17 #include "webkit/renderer/media/crypto/ppapi/cdm/content_decryption_module.h" | 17 #include "media/cdm/ppapi/api/content_decryption_module.h" |
18 | 18 |
19 // Enable this to use the fake decoder for testing. | 19 // Enable this to use the fake decoder for testing. |
20 // TODO(tomfinegan): Move fake audio decoder into a separate class. | 20 // TODO(tomfinegan): Move fake audio decoder into a separate class. |
21 #if 0 | 21 #if 0 |
22 #define CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER | 22 #define CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER |
23 #endif | 23 #endif |
24 | 24 |
25 namespace media { | 25 namespace media { |
| 26 class CdmVideoDecoder; |
26 class DecoderBuffer; | 27 class DecoderBuffer; |
27 } | |
28 | |
29 namespace webkit_media { | |
30 | |
31 class CdmVideoDecoder; | |
32 class FFmpegCdmAudioDecoder; | 28 class FFmpegCdmAudioDecoder; |
33 | 29 |
34 // Clear key implementation of the cdm::ContentDecryptionModule interface. | 30 // Clear key implementation of the cdm::ContentDecryptionModule interface. |
35 class ClearKeyCdm : public cdm::ContentDecryptionModule { | 31 class ClearKeyCdm : public cdm::ContentDecryptionModule { |
36 public: | 32 public: |
37 explicit ClearKeyCdm(cdm::Host* host); | 33 explicit ClearKeyCdm(cdm::Host* host); |
38 virtual ~ClearKeyCdm(); | 34 virtual ~ClearKeyCdm(); |
39 | 35 |
40 // ContentDecryptionModule implementation. | 36 // ContentDecryptionModule implementation. |
41 virtual cdm::Status GenerateKeyRequest( | 37 virtual cdm::Status GenerateKeyRequest( |
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80 Status status() { return status_; } | 76 Status status() { return status_; } |
81 const std::string& session_id() { return session_id_; } | 77 const std::string& session_id() { return session_id_; } |
82 const std::vector<uint8>& key_message() { return key_message_; } | 78 const std::vector<uint8>& key_message() { return key_message_; } |
83 const std::string& default_url() { return default_url_; } | 79 const std::string& default_url() { return default_url_; } |
84 | 80 |
85 // Resets the Client to a clean state. | 81 // Resets the Client to a clean state. |
86 void Reset(); | 82 void Reset(); |
87 | 83 |
88 void KeyAdded(const std::string& session_id); | 84 void KeyAdded(const std::string& session_id); |
89 void KeyError(const std::string& session_id, | 85 void KeyError(const std::string& session_id, |
90 media::MediaKeys::KeyError error_code, | 86 MediaKeys::KeyError error_code, |
91 int system_code); | 87 int system_code); |
92 void KeyMessage(const std::string& session_id, | 88 void KeyMessage(const std::string& session_id, |
93 const std::vector<uint8>& message, | 89 const std::vector<uint8>& message, |
94 const std::string& default_url); | 90 const std::string& default_url); |
95 | 91 |
96 private: | 92 private: |
97 Status status_; | 93 Status status_; |
98 std::string session_id_; | 94 std::string session_id_; |
99 std::vector<uint8> key_message_; | 95 std::vector<uint8> key_message_; |
100 std::string default_url_; | 96 std::string default_url_; |
101 }; | 97 }; |
102 | 98 |
103 // Prepares next heartbeat message and sets a timer for it. | 99 // Prepares next heartbeat message and sets a timer for it. |
104 void ScheduleNextHeartBeat(); | 100 void ScheduleNextHeartBeat(); |
105 | 101 |
106 // Decrypts the |encrypted_buffer| and puts the result in |decrypted_buffer|. | 102 // Decrypts the |encrypted_buffer| and puts the result in |decrypted_buffer|. |
107 // Returns cdm::kSuccess if decryption succeeded. The decrypted result is | 103 // Returns cdm::kSuccess if decryption succeeded. The decrypted result is |
108 // put in |decrypted_buffer|. If |encrypted_buffer| is empty, the | 104 // put in |decrypted_buffer|. If |encrypted_buffer| is empty, the |
109 // |decrypted_buffer| is set to an empty (EOS) buffer. | 105 // |decrypted_buffer| is set to an empty (EOS) buffer. |
110 // Returns cdm::kNoKey if no decryption key was available. In this case | 106 // Returns cdm::kNoKey if no decryption key was available. In this case |
111 // |decrypted_buffer| should be ignored by the caller. | 107 // |decrypted_buffer| should be ignored by the caller. |
112 // Returns cdm::kDecryptError if any decryption error occurred. In this case | 108 // Returns cdm::kDecryptError if any decryption error occurred. In this case |
113 // |decrypted_buffer| should be ignored by the caller. | 109 // |decrypted_buffer| should be ignored by the caller. |
114 cdm::Status DecryptToMediaDecoderBuffer( | 110 cdm::Status DecryptToMediaDecoderBuffer( |
115 const cdm::InputBuffer& encrypted_buffer, | 111 const cdm::InputBuffer& encrypted_buffer, |
116 scoped_refptr<media::DecoderBuffer>* decrypted_buffer); | 112 scoped_refptr<DecoderBuffer>* decrypted_buffer); |
117 | 113 |
118 #if defined(CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER) | 114 #if defined(CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER) |
119 int64 CurrentTimeStampInMicroseconds() const; | 115 int64 CurrentTimeStampInMicroseconds() const; |
120 | 116 |
121 // Generates fake video frames with |duration_in_microseconds|. | 117 // Generates fake video frames with |duration_in_microseconds|. |
122 // Returns the number of samples generated in the |audio_frames|. | 118 // Returns the number of samples generated in the |audio_frames|. |
123 int GenerateFakeAudioFramesFromDuration(int64 duration_in_microseconds, | 119 int GenerateFakeAudioFramesFromDuration(int64 duration_in_microseconds, |
124 cdm::AudioFrames* audio_frames) const; | 120 cdm::AudioFrames* audio_frames) const; |
125 | 121 |
126 // Generates fake video frames given |input_timestamp|. | 122 // Generates fake video frames given |input_timestamp|. |
127 // Returns cdm::kSuccess if any audio frame is successfully generated. | 123 // Returns cdm::kSuccess if any audio frame is successfully generated. |
128 cdm::Status GenerateFakeAudioFrames(int64 timestamp_in_microseconds, | 124 cdm::Status GenerateFakeAudioFrames(int64 timestamp_in_microseconds, |
129 cdm::AudioFrames* audio_frames); | 125 cdm::AudioFrames* audio_frames); |
130 #endif // CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER | 126 #endif // CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER |
131 | 127 |
132 Client client_; | 128 Client client_; |
133 media::AesDecryptor decryptor_; | 129 AesDecryptor decryptor_; |
134 | 130 |
135 // Protects the |client_| from being accessed by the |decryptor_| | 131 // Protects the |client_| from being accessed by the |decryptor_| |
136 // simultaneously. | 132 // simultaneously. |
137 base::Lock client_lock_; | 133 base::Lock client_lock_; |
138 | 134 |
139 cdm::Host* host_; | 135 cdm::Host* host_; |
140 | 136 |
141 std::string heartbeat_session_id_; | 137 std::string heartbeat_session_id_; |
142 std::string next_heartbeat_message_; | 138 std::string next_heartbeat_message_; |
143 | 139 |
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158 | 154 |
159 #if defined(CLEAR_KEY_CDM_USE_FFMPEG_DECODER) | 155 #if defined(CLEAR_KEY_CDM_USE_FFMPEG_DECODER) |
160 scoped_ptr<FFmpegCdmAudioDecoder> audio_decoder_; | 156 scoped_ptr<FFmpegCdmAudioDecoder> audio_decoder_; |
161 #endif // CLEAR_KEY_CDM_USE_FFMPEG_DECODER | 157 #endif // CLEAR_KEY_CDM_USE_FFMPEG_DECODER |
162 | 158 |
163 scoped_ptr<CdmVideoDecoder> video_decoder_; | 159 scoped_ptr<CdmVideoDecoder> video_decoder_; |
164 | 160 |
165 DISALLOW_COPY_AND_ASSIGN(ClearKeyCdm); | 161 DISALLOW_COPY_AND_ASSIGN(ClearKeyCdm); |
166 }; | 162 }; |
167 | 163 |
168 } // namespace webkit_media | 164 } // namespace media |
169 | 165 |
170 #endif // WEBKIT_RENDERER_MEDIA_CRYPTO_PPAPI_CLEAR_KEY_CDM_H_ | 166 #endif // MEDIA_CDM_PPAPI_CLEAR_KEY_CDM_H_ |
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