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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 #ifndef CDM_CONTENT_DECRYPTION_MODULE_H_ | 5 #ifndef CDM_CONTENT_DECRYPTION_MODULE_H_ |
| 6 #define CDM_CONTENT_DECRYPTION_MODULE_H_ | 6 #define CDM_CONTENT_DECRYPTION_MODULE_H_ |
| 7 | 7 |
| 8 #if defined(_MSC_VER) | 8 #if defined(_MSC_VER) |
| 9 typedef unsigned char uint8_t; | 9 typedef unsigned char uint8_t; |
| 10 typedef unsigned int uint32_t; | 10 typedef unsigned int uint32_t; |
| 11 typedef int int32_t; | 11 typedef int int32_t; |
| 12 typedef __int64 int64_t; | 12 typedef __int64 int64_t; |
| 13 #else | 13 #else |
| 14 #include <stdint.h> | 14 #include <stdint.h> |
| 15 #endif | 15 #endif |
| 16 | 16 |
| 17 // Define CDM_EXPORT so that functionality implemented by the CDM module | 17 // Define CDM_EXPORT so that functionality implemented by the CDM module |
| 18 // can be exported to consumers. | 18 // can be exported to consumers. |
| 19 #if defined(WIN32) | 19 #if defined(WIN32) |
| 20 | 20 |
| 21 #if defined(CDM_IMPLEMENTATION) | 21 #if defined(CDM_IMPLEMENTATION) |
| 22 #define CDM_EXPORT __declspec(dllexport) | 22 #define CDM_EXPORT __declspec(dllexport) |
| 23 #else | 23 #else |
| 24 #define CDM_EXPORT __declspec(dllimport) | 24 #define CDM_EXPORT __declspec(dllimport) |
| 25 #endif // defined(CDM_IMPLEMENTATION) | 25 #endif // defined(CDM_IMPLEMENTATION) |
| 26 | 26 |
| 27 #else // defined(WIN32) | 27 #else // defined(WIN32) |
| 28 | 28 |
| 29 #if defined(CDM_IMPLEMENTATION) | 29 #if defined(CDM_IMPLEMENTATION) || defined(UNDEFINED_SANITIZER) |
| 30 #define CDM_EXPORT __attribute__((visibility("default"))) | 30 #define CDM_EXPORT __attribute__((visibility("default"))) |
| 31 #else | 31 #else |
| 32 #define CDM_EXPORT | 32 #define CDM_EXPORT |
| 33 #endif | 33 #endif |
| 34 | 34 |
| 35 #endif // defined(WIN32) | 35 #endif // defined(WIN32) |
| 36 | 36 |
| 37 // The version number must be rolled when the exported functions are updated! | 37 // The version number must be rolled when the exported functions are updated! |
| 38 // If the CDM and the adapter use different versions of these functions, the | 38 // If the CDM and the adapter use different versions of these functions, the |
| 39 // adapter will fail to load or crash! | 39 // adapter will fail to load or crash! |
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| 637 ContentDecryptionModule_7() {} | 637 ContentDecryptionModule_7() {} |
| 638 virtual ~ContentDecryptionModule_7() {} | 638 virtual ~ContentDecryptionModule_7() {} |
| 639 }; | 639 }; |
| 640 | 640 |
| 641 // ContentDecryptionModule interface that all CDMs need to implement. | 641 // ContentDecryptionModule interface that all CDMs need to implement. |
| 642 // The interface is versioned for backward compatibility. | 642 // The interface is versioned for backward compatibility. |
| 643 // Note: ContentDecryptionModule implementations must use the allocator | 643 // Note: ContentDecryptionModule implementations must use the allocator |
| 644 // provided in CreateCdmInstance() to allocate any Buffer that needs to | 644 // provided in CreateCdmInstance() to allocate any Buffer that needs to |
| 645 // be passed back to the caller. Implementations must call Buffer::Destroy() | 645 // be passed back to the caller. Implementations must call Buffer::Destroy() |
| 646 // when a Buffer is created that will never be returned to the caller. | 646 // when a Buffer is created that will never be returned to the caller. |
| 647 class ContentDecryptionModule_8 { | 647 class CDM_EXPORT ContentDecryptionModule_8 { |
| 648 public: | 648 public: |
| 649 static const int kVersion = 8; | 649 static const int kVersion = 8; |
| 650 typedef Host_8 Host; | 650 typedef Host_8 Host; |
| 651 | 651 |
| 652 // Initializes the CDM instance, providing information about permitted | 652 // Initializes the CDM instance, providing information about permitted |
| 653 // functionalities. | 653 // functionalities. |
| 654 // If |allow_distinctive_identifier| is false, messages from the CDM, | 654 // If |allow_distinctive_identifier| is false, messages from the CDM, |
| 655 // such as message events, must not contain a Distinctive Identifier, | 655 // such as message events, must not contain a Distinctive Identifier, |
| 656 // even in an encrypted form. | 656 // even in an encrypted form. |
| 657 // If |allow_persistent_state| is false, the CDM must not attempt to | 657 // If |allow_persistent_state| is false, the CDM must not attempt to |
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| 822 virtual void Destroy() = 0; | 822 virtual void Destroy() = 0; |
| 823 | 823 |
| 824 protected: | 824 protected: |
| 825 ContentDecryptionModule_8() {} | 825 ContentDecryptionModule_8() {} |
| 826 virtual ~ContentDecryptionModule_8() {} | 826 virtual ~ContentDecryptionModule_8() {} |
| 827 }; | 827 }; |
| 828 | 828 |
| 829 typedef ContentDecryptionModule_8 ContentDecryptionModule; | 829 typedef ContentDecryptionModule_8 ContentDecryptionModule; |
| 830 | 830 |
| 831 // Represents a buffer created by Allocator implementations. | 831 // Represents a buffer created by Allocator implementations. |
| 832 class Buffer { | 832 class CDM_EXPORT Buffer { |
| 833 public: | 833 public: |
| 834 // Destroys the buffer in the same context as it was created. | 834 // Destroys the buffer in the same context as it was created. |
| 835 virtual void Destroy() = 0; | 835 virtual void Destroy() = 0; |
| 836 | 836 |
| 837 virtual uint32_t Capacity() const = 0; | 837 virtual uint32_t Capacity() const = 0; |
| 838 virtual uint8_t* Data() = 0; | 838 virtual uint8_t* Data() = 0; |
| 839 virtual void SetSize(uint32_t size) = 0; | 839 virtual void SetSize(uint32_t size) = 0; |
| 840 virtual uint32_t Size() const = 0; | 840 virtual uint32_t Size() const = 0; |
| 841 | 841 |
| 842 protected: | 842 protected: |
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| 978 // if a FileIO object cannot be obtained. Once a valid FileIO object is | 978 // if a FileIO object cannot be obtained. Once a valid FileIO object is |
| 979 // returned, |client| must be valid until FileIO::Close() is called. The | 979 // returned, |client| must be valid until FileIO::Close() is called. The |
| 980 // CDM can call this method multiple times to operate on different files. | 980 // CDM can call this method multiple times to operate on different files. |
| 981 virtual FileIO* CreateFileIO(FileIOClient* client) = 0; | 981 virtual FileIO* CreateFileIO(FileIOClient* client) = 0; |
| 982 | 982 |
| 983 protected: | 983 protected: |
| 984 Host_7() {} | 984 Host_7() {} |
| 985 virtual ~Host_7() {} | 985 virtual ~Host_7() {} |
| 986 }; | 986 }; |
| 987 | 987 |
| 988 class Host_8 { | 988 class CDM_EXPORT Host_8 { |
| 989 public: | 989 public: |
| 990 static const int kVersion = 8; | 990 static const int kVersion = 8; |
| 991 | 991 |
| 992 // Returns a Buffer* containing non-zero members upon success, or NULL on | 992 // Returns a Buffer* containing non-zero members upon success, or NULL on |
| 993 // failure. The caller owns the Buffer* after this call. The buffer is not | 993 // failure. The caller owns the Buffer* after this call. The buffer is not |
| 994 // guaranteed to be zero initialized. The capacity of the allocated Buffer | 994 // guaranteed to be zero initialized. The capacity of the allocated Buffer |
| 995 // is guaranteed to be not less than |capacity|. | 995 // is guaranteed to be not less than |capacity|. |
| 996 virtual Buffer* Allocate(uint32_t capacity) = 0; | 996 virtual Buffer* Allocate(uint32_t capacity) = 0; |
| 997 | 997 |
| 998 // Requests the host to call ContentDecryptionModule::TimerFired() |delay_ms| | 998 // Requests the host to call ContentDecryptionModule::TimerFired() |delay_ms| |
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| 1116 // returned, |client| must be valid until FileIO::Close() is called. The | 1116 // returned, |client| must be valid until FileIO::Close() is called. The |
| 1117 // CDM can call this method multiple times to operate on different files. | 1117 // CDM can call this method multiple times to operate on different files. |
| 1118 virtual FileIO* CreateFileIO(FileIOClient* client) = 0; | 1118 virtual FileIO* CreateFileIO(FileIOClient* client) = 0; |
| 1119 | 1119 |
| 1120 protected: | 1120 protected: |
| 1121 Host_8() {} | 1121 Host_8() {} |
| 1122 virtual ~Host_8() {} | 1122 virtual ~Host_8() {} |
| 1123 }; | 1123 }; |
| 1124 | 1124 |
| 1125 // Represents a decrypted block that has not been decoded. | 1125 // Represents a decrypted block that has not been decoded. |
| 1126 class DecryptedBlock { | 1126 class CDM_EXPORT DecryptedBlock { |
| 1127 public: | 1127 public: |
| 1128 virtual void SetDecryptedBuffer(Buffer* buffer) = 0; | 1128 virtual void SetDecryptedBuffer(Buffer* buffer) = 0; |
| 1129 virtual Buffer* DecryptedBuffer() = 0; | 1129 virtual Buffer* DecryptedBuffer() = 0; |
| 1130 | 1130 |
| 1131 // TODO(tomfinegan): Figure out if timestamp is really needed. If it is not, | 1131 // TODO(tomfinegan): Figure out if timestamp is really needed. If it is not, |
| 1132 // we can just pass Buffer pointers around. | 1132 // we can just pass Buffer pointers around. |
| 1133 virtual void SetTimestamp(int64_t timestamp) = 0; | 1133 virtual void SetTimestamp(int64_t timestamp) = 0; |
| 1134 virtual int64_t Timestamp() const = 0; | 1134 virtual int64_t Timestamp() const = 0; |
| 1135 | 1135 |
| 1136 protected: | 1136 protected: |
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| 1193 virtual AudioFormat Format() const = 0; | 1193 virtual AudioFormat Format() const = 0; |
| 1194 | 1194 |
| 1195 protected: | 1195 protected: |
| 1196 AudioFrames() {} | 1196 AudioFrames() {} |
| 1197 virtual ~AudioFrames() {} | 1197 virtual ~AudioFrames() {} |
| 1198 }; | 1198 }; |
| 1199 | 1199 |
| 1200 } // namespace cdm | 1200 } // namespace cdm |
| 1201 | 1201 |
| 1202 #endif // CDM_CONTENT_DECRYPTION_MODULE_H_ | 1202 #endif // CDM_CONTENT_DECRYPTION_MODULE_H_ |
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