media/blink/key_system_config_selector.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_BLINK_KEY_SYSTEM_CONFIG_SELECTOR_H_
   6 #define MEDIA_BLINK_KEY_SYSTEM_CONFIG_SELECTOR_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/bind.h"
  12 #include "base/callback.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "media/base/eme_constants.h"
  16 #include "media/base/media_export.h"
  17 #include "third_party/WebKit/public/platform/WebVector.h"
  18
  19 namespace blink {
  20
  21 struct WebMediaKeySystemConfiguration;
  22 struct WebMediaKeySystemMediaCapability;
  23 class WebSecurityOrigin;
  24 class WebString;
  25
  26 }  // namespace blink
  27
  28 namespace media {
  29
  30 class KeySystems;
  31 class MediaPermission;
  32
  33 class MEDIA_EXPORT KeySystemConfigSelector {
  34  public:
  35   KeySystemConfigSelector(
  36       const KeySystems* key_systems,
  37       MediaPermission* media_permission);
  38
  39   ~KeySystemConfigSelector();
  40
  41   void SelectConfig(
  42       const blink::WebString& key_system,
  43       const blink::WebVector<blink::WebMediaKeySystemConfiguration>&
  44           candidate_configurations,
  45       const blink::WebSecurityOrigin& security_origin,
  46       bool are_secure_codecs_supported,
  47       // The second argument is |are_secure_codecs_required|.
  48       base::Callback<void(const blink::WebMediaKeySystemConfiguration&,
  49                           bool)> succeeded_cb,
  50       base::Callback<void(const blink::WebString&)> not_supported_cb);
  51
  52  private:
  53   struct SelectionRequest;
  54   class ConfigState;
  55
  56   enum ConfigurationSupport {
  57     CONFIGURATION_NOT_SUPPORTED,
  58     CONFIGURATION_REQUIRES_PERMISSION,
  59     CONFIGURATION_SUPPORTED,
  60   };
  61
  62   void SelectConfigInternal(scoped_ptr<SelectionRequest> request);
  63
  64   void OnPermissionResult(scoped_ptr<SelectionRequest> request,
  65                           bool is_permission_granted);
  66
  67   ConfigurationSupport GetSupportedConfiguration(
  68       const std::string& key_system,
  69       const blink::WebMediaKeySystemConfiguration& candidate,
  70       ConfigState* config_state,
  71       blink::WebMediaKeySystemConfiguration* accumulated_configuration);
  72
  73   bool GetSupportedCapabilities(
  74       const std::string& key_system,
  75       EmeMediaType media_type,
  76       const blink::WebVector<blink::WebMediaKeySystemMediaCapability>&
  77           requested_media_capabilities,
  78       ConfigState* config_state,
  79       std::vector<blink::WebMediaKeySystemMediaCapability>*
  80           supported_media_capabilities);
  81
  82   bool IsSupportedContentType(const std::string& key_system,
  83                               EmeMediaType media_type,
  84                               const std::string& container_mime_type,
  85                               const std::string& codecs,
  86                               ConfigState* config_state);
  87
  88   const KeySystems* key_systems_;
  89   MediaPermission* media_permission_;
  90   base::WeakPtrFactory<KeySystemConfigSelector> weak_factory_;
  91
  92   DISALLOW_COPY_AND_ASSIGN(KeySystemConfigSelector);
  93 };
  94
  95 }  // namespace media
  96
  97 #endif  // MEDIA_BLINK_KEY_SYSTEM_CONFIG_SELECTOR_H_