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// Copyright 2014 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_BLINK_ENCRYPTED_MEDIA_PLAYER_SUPPORT_H_
#define MEDIA_BLINK_ENCRYPTED_MEDIA_PLAYER_SUPPORT_H_
#include <string>
#include <vector>
#include "base/callback.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "media/base/cdm_context.h"
#include "media/base/cdm_factory.h"
#include "media/base/demuxer.h"
#include "media/base/eme_constants.h"
#include "media/cdm/proxy_decryptor.h"
#include "third_party/WebKit/public/platform/WebContentDecryptionModuleResult.h"
#include "third_party/WebKit/public/platform/WebMediaPlayer.h"
namespace blink {
class WebContentDecryptionModule;
class WebLocalFrame;
class WebMediaPlayerEncryptedMediaClient;
class WebString;
}
namespace media {
class MediaPermission;
class WebContentDecryptionModuleImpl;
// Provides support to prefixed EME implementation.
// Do NOT add unprefixed EME functionality to this class!
// TODO(xhwang): When deprecating prefixed EME support, drop this whole file.
class EncryptedMediaPlayerSupport
: public base::SupportsWeakPtr<EncryptedMediaPlayerSupport> {
public:
using CdmContextReadyCB = ProxyDecryptor::CdmContextReadyCB;
// |cdm_context_ready_cb| is called when the CDM instance creation completes.
EncryptedMediaPlayerSupport(CdmFactory* cdm_factory,
blink::WebMediaPlayerEncryptedMediaClient* client,
MediaPermission* media_permission,
const CdmContextReadyCB& cdm_context_ready_cb);
~EncryptedMediaPlayerSupport();
blink::WebMediaPlayer::MediaKeyException GenerateKeyRequest(
blink::WebLocalFrame* frame,
const blink::WebString& key_system,
const unsigned char* init_data,
unsigned init_data_length);
blink::WebMediaPlayer::MediaKeyException AddKey(
const blink::WebString& key_system,
const unsigned char* key,
unsigned key_length,
const unsigned char* init_data,
unsigned init_data_length,
const blink::WebString& session_id);
blink::WebMediaPlayer::MediaKeyException CancelKeyRequest(
const blink::WebString& key_system,
const blink::WebString& session_id);
void SetInitDataType(EmeInitDataType init_data_type);
private:
blink::WebMediaPlayer::MediaKeyException GenerateKeyRequestInternal(
blink::WebLocalFrame* frame,
const std::string& key_system,
const unsigned char* init_data,
unsigned init_data_length);
blink::WebMediaPlayer::MediaKeyException AddKeyInternal(
const std::string& key_system,
const unsigned char* key,
unsigned key_length,
const unsigned char* init_data,
unsigned init_data_length,
const std::string& session_id);
blink::WebMediaPlayer::MediaKeyException CancelKeyRequestInternal(
const std::string& key_system,
const std::string& session_id);
void OnKeyAdded(const std::string& session_id);
void OnKeyError(const std::string& session_id,
MediaKeys::KeyError error_code,
uint32 system_code);
void OnKeyMessage(const std::string& session_id,
const std::vector<uint8>& message,
const GURL& destination_url);
CdmFactory* cdm_factory_;
blink::WebMediaPlayerEncryptedMediaClient* client_;
MediaPermission* media_permission_;
// The currently selected key system. Empty string means that no key system
// has been selected.
std::string current_key_system_;
// We assume all streams are from the same container, thus have the same
// init data type.
EmeInitDataType init_data_type_;
CdmContextReadyCB cdm_context_ready_cb_;
// Manages decryption keys and decrypts encrypted frames.
scoped_ptr<ProxyDecryptor> proxy_decryptor_;
DISALLOW_COPY_AND_ASSIGN(EncryptedMediaPlayerSupport);
};
} // namespace media
#endif // MEDIA_BLINK_ENCRYPTED_MEDIA_PLAYER_SUPPORT_H_
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