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// Copyright 2013 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 MEDIA_CDM_PPAPI_CDM_ADAPTER_H_
#define MEDIA_CDM_PPAPI_CDM_ADAPTER_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "build/build_config.h"
#include "media/cdm/ppapi/api/content_decryption_module.h"
#include "media/cdm/ppapi/cdm_helpers.h"
#include "media/cdm/ppapi/cdm_wrapper.h"
#include "media/cdm/ppapi/linked_ptr.h"
#include "ppapi/c/pp_stdint.h"
#include "ppapi/c/private/pp_content_decryptor.h"
#include "ppapi/cpp/completion_callback.h"
#include "ppapi/cpp/private/content_decryptor_private.h"
#include "ppapi/cpp/var.h"
#include "ppapi/cpp/var_array_buffer.h"
#include "ppapi/utility/completion_callback_factory.h"
#if defined(OS_CHROMEOS)
#include "ppapi/cpp/private/output_protection_private.h"
#include "ppapi/cpp/private/platform_verification.h"
#endif
namespace media {
// GetCdmHostFunc implementation.
void* GetCdmHost(int host_interface_version, void* user_data);
// An adapter class for abstracting away PPAPI interaction and threading for a
// Content Decryption Module (CDM).
class CdmAdapter : public pp::Instance,
public pp::ContentDecryptor_Private,
public cdm::Host_7,
public cdm::Host_8 {
public:
CdmAdapter(PP_Instance instance, pp::Module* module);
virtual ~CdmAdapter();
// pp::Instance implementation.
virtual bool Init(uint32_t argc, const char* argn[], const char* argv[]) {
return true;
}
// PPP_ContentDecryptor_Private implementation.
// Note: Results of calls to these methods must be reported through the
// PPB_ContentDecryptor_Private interface.
void Initialize(const std::string& key_system,
bool allow_distinctive_identifier,
bool allow_persistent_state) override;
void SetServerCertificate(uint32_t promise_id,
pp::VarArrayBuffer server_certificate) override;
void CreateSessionAndGenerateRequest(uint32_t promise_id,
PP_SessionType session_type,
const std::string& init_data_type,
pp::VarArrayBuffer init_data) override;
void LoadSession(uint32_t promise_id,
PP_SessionType session_type,
const std::string& session_id) override;
void UpdateSession(uint32_t promise_id,
const std::string& session_id,
pp::VarArrayBuffer response) override;
void CloseSession(uint32_t promise_id, const std::string& session_id);
void RemoveSession(uint32_t promise_id,
const std::string& session_id) override;
void Decrypt(pp::Buffer_Dev encrypted_buffer,
const PP_EncryptedBlockInfo& encrypted_block_info) override;
void InitializeAudioDecoder(const PP_AudioDecoderConfig& decoder_config,
pp::Buffer_Dev extra_data_buffer) override;
void InitializeVideoDecoder(const PP_VideoDecoderConfig& decoder_config,
pp::Buffer_Dev extra_data_buffer) override;
void DeinitializeDecoder(PP_DecryptorStreamType decoder_type,
uint32_t request_id) override;
void ResetDecoder(PP_DecryptorStreamType decoder_type,
uint32_t request_id) override;
void DecryptAndDecode(
PP_DecryptorStreamType decoder_type,
pp::Buffer_Dev encrypted_buffer,
const PP_EncryptedBlockInfo& encrypted_block_info) override;
// cdm::Host_7 and cdm::Host_8 implementation.
cdm::Buffer* Allocate(uint32_t capacity) override;
void SetTimer(int64_t delay_ms, void* context) override;
cdm::Time GetCurrentWallTime() override;
void OnResolveNewSessionPromise(uint32_t promise_id,
const char* session_id,
uint32_t session_id_size) override;
void OnResolvePromise(uint32_t promise_id) override;
void OnRejectPromise(uint32_t promise_id,
cdm::Error error,
uint32_t system_code,
const char* error_message,
uint32_t error_message_size) override;
void OnSessionMessage(const char* session_id,
uint32_t session_id_size,
cdm::MessageType message_type,
const char* message,
uint32_t message_size,
const char* legacy_destination_url,
uint32_t legacy_destination_url_size) override;
void OnSessionKeysChange(const char* session_id,
uint32_t session_id_size,
bool has_additional_usable_key,
const cdm::KeyInformation* keys_info,
uint32_t keys_info_count) override;
void OnExpirationChange(const char* session_id,
uint32_t session_id_size,
cdm::Time new_expiry_time) override;
void OnSessionClosed(const char* session_id,
uint32_t session_id_size) override;
void OnLegacySessionError(const char* session_id,
uint32_t session_id_size,
cdm::Error error,
uint32_t system_code,
const char* error_message,
uint32_t error_message_size) override;
void SendPlatformChallenge(const char* service_id,
uint32_t service_id_size,
const char* challenge,
uint32_t challenge_size) override;
void EnableOutputProtection(uint32_t desired_protection_mask) override;
void QueryOutputProtectionStatus() override;
void OnDeferredInitializationDone(cdm::StreamType stream_type,
cdm::Status decoder_status) override;
cdm::FileIO* CreateFileIO(cdm::FileIOClient* client) override;
private:
// These are reported to UMA server. Do not change the existing values!
enum OutputProtectionStatus {
OUTPUT_PROTECTION_QUERIED = 0,
OUTPUT_PROTECTION_NO_EXTERNAL_LINK = 1,
OUTPUT_PROTECTION_ALL_EXTERNAL_LINKS_PROTECTED = 2,
OUTPUT_PROTECTION_MAX = 3
};
typedef linked_ptr<DecryptedBlockImpl> LinkedDecryptedBlock;
typedef linked_ptr<VideoFrameImpl> LinkedVideoFrame;
typedef linked_ptr<AudioFramesImpl> LinkedAudioFrames;
struct SessionError {
SessionError(cdm::Error error,
uint32_t system_code,
const std::string& error_description);
cdm::Error error;
uint32_t system_code;
std::string error_description;
};
struct SessionMessage {
SessionMessage(const std::string& session_id,
cdm::MessageType message_type,
const char* message,
uint32_t message_size,
const std::string& legacy_destination_url);
std::string session_id;
cdm::MessageType message_type;
std::vector<uint8_t> message;
std::string legacy_destination_url;
};
bool CreateCdmInstance(const std::string& key_system);
// <code>PPB_ContentDecryptor_Private</code> dispatchers. These are passed to
// <code>callback_factory_</code> to ensure that calls into
// <code>PPP_ContentDecryptor_Private</code> are asynchronous.
void SendPromiseResolvedInternal(int32_t result, uint32_t promise_id);
void SendPromiseResolvedWithSessionInternal(int32_t result,
uint32_t promise_id,
const std::string& session_id);
void SendPromiseRejectedInternal(int32_t result,
uint32_t promise_id,
const SessionError& error);
void SendSessionMessageInternal(int32_t result,
const SessionMessage& message);
void SendSessionClosedInternal(int32_t result, const std::string& session_id);
void SendSessionErrorInternal(int32_t result,
const std::string& session_id,
const SessionError& error);
void SendSessionKeysChangeInternal(
int32_t result,
const std::string& session_id,
bool has_additional_usable_key,
const std::vector<PP_KeyInformation>& key_info);
void SendExpirationChangeInternal(int32_t result,
const std::string& session_id,
cdm::Time new_expiry_time);
void RejectPromise(uint32_t promise_id,
cdm::Error error,
uint32_t system_code,
const std::string& error_message);
void DeliverBlock(int32_t result,
const cdm::Status& status,
const LinkedDecryptedBlock& decrypted_block,
const PP_DecryptTrackingInfo& tracking_info);
void DecoderInitializeDone(int32_t result,
PP_DecryptorStreamType decoder_type,
uint32_t request_id,
bool success);
void DecoderDeinitializeDone(int32_t result,
PP_DecryptorStreamType decoder_type,
uint32_t request_id);
void DecoderResetDone(int32_t result,
PP_DecryptorStreamType decoder_type,
uint32_t request_id);
void DeliverFrame(int32_t result,
const cdm::Status& status,
const LinkedVideoFrame& video_frame,
const PP_DecryptTrackingInfo& tracking_info);
void DeliverSamples(int32_t result,
const cdm::Status& status,
const LinkedAudioFrames& audio_frames,
const PP_DecryptTrackingInfo& tracking_info);
// Helper for SetTimer().
void TimerExpired(int32_t result, void* context);
bool IsValidVideoFrame(const LinkedVideoFrame& video_frame);
// Callback to report |file_size_bytes| of the first file read by FileIO.
void OnFirstFileRead(int32_t file_size_bytes);
#if !defined(NDEBUG)
// Logs the given message to the JavaScript console associated with the
// CDM adapter instance. The name of the CDM adapter issuing the log message
// will be automatically prepended to the message.
void LogToConsole(const pp::Var& value);
#endif // !defined(NDEBUG)
#if defined(OS_CHROMEOS)
void ReportOutputProtectionUMA(OutputProtectionStatus status);
void ReportOutputProtectionQuery();
void ReportOutputProtectionQueryResult();
struct PepperPlatformChallengeResponse {
pp::Var signed_data;
pp::Var signed_data_signature;
pp::Var platform_key_certificate;
};
void SendPlatformChallengeDone(
int32_t result,
const linked_ptr<PepperPlatformChallengeResponse>& response);
void EnableProtectionDone(int32_t result);
void QueryOutputProtectionStatusDone(int32_t result);
pp::OutputProtection_Private output_protection_;
pp::PlatformVerification platform_verification_;
// Same as above, these are only read by QueryOutputProtectionStatusDone().
uint32_t output_link_mask_;
uint32_t output_protection_mask_;
bool query_output_protection_in_progress_;
// Tracks whether an output protection query and a positive query result (no
// unprotected external link) have been reported to UMA.
bool uma_for_output_protection_query_reported_;
bool uma_for_output_protection_positive_result_reported_;
#endif
PpbBufferAllocator allocator_;
pp::CompletionCallbackFactory<CdmAdapter> callback_factory_;
linked_ptr<CdmWrapper> cdm_;
std::string key_system_;
bool allow_distinctive_identifier_;
bool allow_persistent_state_;
// If the CDM returned kDeferredInitialization during InitializeAudioDecoder()
// or InitializeVideoDecoder(), the (Audio|Video)DecoderConfig.request_id is
// saved for the future call to OnDeferredInitializationDone().
bool deferred_initialize_audio_decoder_;
uint32_t deferred_audio_decoder_config_id_;
bool deferred_initialize_video_decoder_;
uint32_t deferred_video_decoder_config_id_;
uint32_t last_read_file_size_kb_;
bool file_size_uma_reported_;
DISALLOW_COPY_AND_ASSIGN(CdmAdapter);
};
} // namespace media
#endif // MEDIA_CDM_PPAPI_CDM_ADAPTER_H_