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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 CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
#define CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
#include <map>
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "media/base/media_keys.h"
#include "third_party/WebKit/public/platform/WebContentDecryptionModuleSession.h"
#include "third_party/WebKit/public/platform/WebString.h"
namespace media {
class MediaKeys;
}
namespace content {
class CdmSessionAdapter;
class WebContentDecryptionModuleSessionImpl
: public blink::WebContentDecryptionModuleSession {
public:
WebContentDecryptionModuleSessionImpl(
const scoped_refptr<CdmSessionAdapter>& adapter);
virtual ~WebContentDecryptionModuleSessionImpl();
// blink::WebContentDecryptionModuleSession implementation.
virtual void setClientInterface(Client* client);
virtual blink::WebString sessionId() const;
// TODO(jrummell): Remove the next 3 methods once blink updated.
virtual void initializeNewSession(const blink::WebString& mime_type,
const uint8* init_data,
size_t init_data_length);
virtual void update(const uint8* response, size_t response_length);
virtual void release();
virtual void initializeNewSession(
const blink::WebString& init_data_type,
const uint8* init_data,
size_t init_data_length,
const blink::WebString& session_type,
blink::WebContentDecryptionModuleResult result);
virtual void update(const uint8* response,
size_t response_length,
blink::WebContentDecryptionModuleResult result);
virtual void release(blink::WebContentDecryptionModuleResult result);
// Callbacks.
void OnSessionMessage(const std::vector<uint8>& message,
const GURL& destination_url);
void OnSessionReady();
void OnSessionClosed();
void OnSessionError(media::MediaKeys::Exception exception_code,
uint32 system_code,
const std::string& error_message);
private:
typedef std::map<uint32, blink::WebContentDecryptionModuleResult> ResultMap;
// These function are used as callbacks when CdmPromise resolves/rejects.
// |result_index| = kReservedIndex means that there is no
// WebContentDecryptionModuleResult.
void SessionCreated(uint32 result_index, const std::string& web_session_id);
void SessionUpdatedOrReleased(uint32 result_index);
void SessionError(uint32 result_index,
media::MediaKeys::Exception exception_code,
uint32 system_code,
const std::string& error_message);
// As initializeNewSession(), update(), and release() get passed a
// WebContentDecryptionModuleResult, keep track of them since this class owns
// it and needs to keep them around until completed. Returns the index used
// to locate the WebContentDecryptionModuleResult when the operation is
// complete.
uint32 AddResult(blink::WebContentDecryptionModuleResult result);
scoped_refptr<CdmSessionAdapter> adapter_;
// Non-owned pointer.
Client* client_;
// Web session ID is the app visible ID for this session generated by the CDM.
// This value is not set until the CDM resolves the initializeNewSession()
// promise.
std::string web_session_id_;
// Don't pass more than 1 close() event to blink::
// TODO(jrummell): Remove this once blink tests handle close() promise and
// closed() event.
bool is_closed_;
// Keep track of all the outstanding WebContentDecryptionModuleResult objects.
uint32 next_available_result_index_;
ResultMap outstanding_results_;
// Since promises will live until they are fired, use a weak reference when
// creating a promise in case this class disappears before the promise
// actually fires.
base::WeakPtrFactory<WebContentDecryptionModuleSessionImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleSessionImpl);
};
} // namespace content
#endif // CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
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