Index: content/common/media/cdm_host_files.h |
diff --git a/content/common/media/cdm_host_files.h b/content/common/media/cdm_host_files.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..5ec1dafcc83ad8118b4bcf254468b10ee4c6ccdc |
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+++ b/content/common/media/cdm_host_files.h |
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+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef CONTENT_COMMON_MEDIA_CDM_HOST_FILES_H_ |
+#define CONTENT_COMMON_MEDIA_CDM_HOST_FILES_H_ |
+ |
+#include <map> |
+#include <memory> |
+#include <vector> |
+ |
+#include "base/files/file.h" |
+#include "base/files/file_path.h" |
+#include "base/lazy_instance.h" |
+#include "base/logging.h" |
+#include "base/memory/ptr_util.h" |
+#include "base/native_library.h" |
+#include "base/path_service.h" |
+#include "build/build_config.h" |
+#include "content/common/media/cdm_host_file.h" |
+#include "content/common/pepper_plugin_list.h" |
+#include "content/public/common/pepper_plugin_info.h" |
+#include "media/cdm/api/content_decryption_module_ext.h" |
+#include "media/cdm/cdm_paths.h" |
+ |
+// On systems that use the zygote process to spawn child processes, we must |
+// open files in the zygote process. |
+#if defined(OS_POSIX) && !defined(OS_NACL) && !defined(OS_MACOSX) && \ |
+ !defined(OS_ANDROID) |
+#define POSIX_WITH_ZYGOTE 1 |
+#endif |
+ |
+namespace base { |
+class FilePath; |
+} |
+ |
+namespace content { |
+ |
+// Manages all CDM host files. |
+class CdmHostFiles { |
+ public: |
+ CdmHostFiles(); |
+ ~CdmHostFiles(); |
+ |
+#if defined(POSIX_WITH_ZYGOTE) |
+ // Opens CDM host files for all registered CDMs and set the global |
+ // CdmHostFiles instance. On any failure, the global instance will not be |
+ // set and no file will be left open. |
+ static void CreateGlobalInstance(); |
+ |
+ // Takes and returns the global CdmHostFiles instance. The return value could |
+ // be nullptr if CreateGlobalInstance() failed. |
+ static std::unique_ptr<CdmHostFiles> TakeGlobalInstance(); |
+#endif |
+ |
+ // Opens CDM host files for the CDM adapter at |cdm_adapter_path| and returns |
+ // the created CdmHostFiles instance. Returns nullptr if any of the files |
+ // cannot be opened, in which case no file will be left open. |
+ static std::unique_ptr<CdmHostFiles> Create( |
+ const base::FilePath& cdm_adapter_path); |
+ |
+ // Verifies |cdm_adapter_path| CDM files by calling the function exported |
+ // by the CDM. If unexpected error happens, all files will be closed. |
+ // Otherwise, the PlatformFiles are passed to the CDM which will close the |
+ // files later. |
+ // Only returns false if the CDM returns false (when there's an immediate |
+ // failure). Otherwise always returns true for backward compatibility, e.g. |
+ // when using an old CDM which doesn't implement the verification API. |
+ bool VerifyFiles(base::NativeLibrary cdm_adapter_library, |
+ const base::FilePath& cdm_adapter_path); |
+ |
+ private: |
+#if defined(POSIX_WITH_ZYGOTE) |
+ // Opens all common files and CDM specific files for all registered CDMs. |
+ bool OpenFilesForAllRegisteredCdms(); |
+#endif |
+ |
+ // Opens all common files and CDM specific files for the CDM adapter |
+ // registered at |cdm_adapter_path|. |
+ bool OpenFiles(const base::FilePath& cdm_adapter_path); |
+ |
+ // Opens common CDM host files shared by all CDMs. Upon failure, close all |
+ // files opened. |
+ bool OpenCommonFiles(); |
+ |
+ // Opens CDM specific files for the CDM adapter registered at |
+ // |cdm_adapter_path|. Returns whether all CDM specific files are opened. |
+ // Upon failure, close all files opened. |
+ bool OpenCdmFiles(const base::FilePath& cdm_adapter_path); |
+ |
+ // Fills |cdm_host_files| with common and CDM specific files for |
+ // |cdm_adapter_path|. The ownership of those files are also transferred. |
+ // Returns true upon success where the remaining files will be closed. |
+ // Returns false upon any failure and all files will be closed. |
+ bool TakePlatformFiles(const base::FilePath& cdm_adapter_path, |
+ std::vector<cdm::HostFile>* cdm_host_files); |
+ |
+ void CloseAllFiles(); |
+ |
+ using ScopedFileVector = std::vector<std::unique_ptr<CdmHostFile>>; |
+ ScopedFileVector common_files_; |
+ std::map<base::FilePath, ScopedFileVector> cdm_specific_files_map_; |
+}; |
+ |
+// Returns whether the |cdm_adapter_path| corresponds to a known CDM. |
+bool IsCdm(const base::FilePath& cdm_adapter_path); |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_COMMON_MEDIA_CDM_HOST_FILES_H_ |