Move EME code out of WebMediaPlayerImpl.

content/renderer/media/crypto/encrypted_media_support_impl.h

+// 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 CONTENT_RENDERER_MEDIA_CRYPTO_ENCRYPTED_MEDIA_SUPPORT_IMPL_H_
+#define CONTENT_RENDERER_MEDIA_CRYPTO_ENCRYPTED_MEDIA_SUPPORT_IMPL_H_
+
+#include <string>
+#include <vector>
+
+#include "base/memory/weak_ptr.h"
+#include "content/renderer/media/crypto/encrypted_media_support.h"
+#include "content/renderer/media/crypto/proxy_decryptor.h"
+
+namespace content {
+
+class WebContentDecryptionModuleImpl;
+
+class EncryptedMediaSupportImpl
+    : public EncryptedMediaSupport,
+      public base::SupportsWeakPtr<EncryptedMediaSupportImpl> {
+ public:
+  explicit EncryptedMediaSupportImpl(blink::WebMediaPlayerClient* client);
+  virtual ~EncryptedMediaSupportImpl();
+
+  // EncryptedMediaSupport implementation.
+  virtual blink::WebMediaPlayer::MediaKeyException generateKeyRequest(
+      blink::WebLocalFrame* frame,
+      const blink::WebString& key_system,
+      const unsigned char* init_data,
+      unsigned init_data_length)  OVERRIDE;
+
+  virtual 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) OVERRIDE;
+
+  virtual blink::WebMediaPlayer::MediaKeyException cancelKeyRequest(
+      const blink::WebString& key_system,
+      const blink::WebString& session_id) OVERRIDE;
+
+  virtual void setContentDecryptionModule(
+      blink::WebContentDecryptionModule* cdm) OVERRIDE;
+  virtual void setContentDecryptionModule(
+      blink::WebContentDecryptionModule* cdm,
+      blink::WebContentDecryptionModuleResult result) OVERRIDE;
+  virtual void setContentDecryptionModuleSync(
+      blink::WebContentDecryptionModule* cdm) OVERRIDE;
+
+  virtual media::SetDecryptorReadyCB CreateSetDecryptorReadyCB() OVERRIDE;
+  virtual media::Demuxer::NeedKeyCB CreateNeedKeyCB() OVERRIDE;
+
+  virtual void OnDecryptError() OVERRIDE;
+
+ private:
+  // Requests that this object notifies when a decryptor is ready through the
+  // |decryptor_ready_cb| provided.
+  // If |decryptor_ready_cb| is null, the existing callback will be fired with
+  // NULL immediately and reset.
+  void SetDecryptorReadyCB(const media::DecryptorReadyCB& decryptor_ready_cb);
+
+  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 OnNeedKey(const std::string& type,
+                 const std::vector<uint8>& init_data);
+
+  void OnKeyAdded(const std::string& session_id);
+  void OnKeyError(const std::string& session_id,
+                  media::MediaKeys::KeyError error_code,
+                  uint32 system_code);
+  void OnKeyMessage(const std::string& session_id,
+                    const std::vector<uint8>& message,
+                    const GURL& destination_url);
+
+  void ContentDecryptionModuleAttached(
+      blink::WebContentDecryptionModuleResult result,
+      bool success);
+
+  blink::WebMediaPlayerClient* client_;
+
+  // The currently selected key system. Empty string means that no key system
+  // has been selected.
+  std::string current_key_system_;
+
+  // Temporary for EME v0.1. In the future the init data type should be passed
+  // through GenerateKeyRequest() directly from WebKit.
+  std::string init_data_type_;
+
+  // Manages decryption keys and decrypts encrypted frames.
+  scoped_ptr<ProxyDecryptor> proxy_decryptor_;
+
+  // Non-owned pointer to the CDM. Updated via calls to
+  // setContentDecryptionModule().
+  WebContentDecryptionModuleImpl* web_cdm_;
+
+  media::DecryptorReadyCB decryptor_ready_cb_;
+
+  DISALLOW_COPY_AND_ASSIGN(EncryptedMediaSupportImpl);
+};
+}
+
+#endif  // CONTENT_RENDERER_MEDIA_CRYPTO_ENCRYPTED_MEDIA_SUPPORT_IMPL_H_