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      1 // Copyright 2013 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 CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_RESOURCE_GETTER_IMPL_H_
      6 #define CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_RESOURCE_GETTER_IMPL_H_
      7 
      8 #include <jni.h>
      9 #include <string>
     10 
     11 #include "base/memory/ref_counted.h"
     12 #include "base/memory/weak_ptr.h"
     13 #include "base/synchronization/waitable_event.h"
     14 #include "media/base/android/media_resource_getter.h"
     15 #include "media/base/android/media_url_interceptor.h"
     16 #include "net/base/auth.h"
     17 #include "net/cookies/canonical_cookie.h"
     18 
     19 namespace fileapi {
     20 class FileSystemContext;
     21 }
     22 
     23 namespace net {
     24 class URLRequestContextGetter;
     25 }
     26 
     27 namespace content {
     28 
     29 class BrowserContext;
     30 class ResourceContext;
     31 
     32 // This class implements media::MediaResourceGetter to retrieve resources
     33 // asynchronously on the UI thread.
     34 class MediaResourceGetterImpl : public media::MediaResourceGetter {
     35  public:
     36   // Construct a MediaResourceGetterImpl object. |browser_context| and
     37   // |render_process_id| are passed to retrieve the CookieStore.
     38   // |file_system_context| are used to get the platform path.
     39   MediaResourceGetterImpl(BrowserContext* browser_context,
     40                           fileapi::FileSystemContext* file_system_context,
     41                           int render_process_id, int render_frame_id);
     42   virtual ~MediaResourceGetterImpl();
     43 
     44   // media::MediaResourceGetter implementation.
     45   // Must be called on the UI thread.
     46   virtual void GetCookies(const GURL& url,
     47                           const GURL& first_party_for_cookies,
     48                           const GetCookieCB& callback) OVERRIDE;
     49   virtual void GetPlatformPathFromURL(
     50       const GURL& url,
     51       const GetPlatformPathCB& callback) OVERRIDE;
     52   virtual void ExtractMediaMetadata(
     53       const std::string& url, const std::string& cookies,
     54       const std::string& user_agent,
     55       const ExtractMediaMetadataCB& callback) OVERRIDE;
     56   virtual void ExtractMediaMetadata(
     57       const int fd,
     58       const int64 offset,
     59       const int64 size,
     60       const ExtractMediaMetadataCB& callback) OVERRIDE;
     61 
     62   static bool RegisterMediaResourceGetter(JNIEnv* env);
     63 
     64  private:
     65   // Called when GetCookies() finishes.
     66   void GetCookiesCallback(
     67       const GetCookieCB& callback, const std::string& cookies);
     68 
     69   // Called when GetPlatformPathFromFileSystemURL() finishes.
     70   void GetPlatformPathCallback(
     71       const GetPlatformPathCB& callback, const std::string& platform_path);
     72 
     73   // BrowserContext to retrieve URLRequestContext and ResourceContext.
     74   BrowserContext* browser_context_;
     75 
     76   // FileSystemContext to be used on FILE thread.
     77   fileapi::FileSystemContext* file_system_context_;
     78 
     79   // Render process id, used to check whether the process can access cookies.
     80   int render_process_id_;
     81 
     82   // Render frame id, used to check tab specific cookie policy.
     83   int render_frame_id_;
     84 
     85   // NOTE: Weak pointers must be invalidated before all other member variables.
     86   base::WeakPtrFactory<MediaResourceGetterImpl> weak_factory_;
     87 
     88   DISALLOW_COPY_AND_ASSIGN(MediaResourceGetterImpl);
     89 };
     90 
     91 }  // namespace content
     92 
     93 #endif  // CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_RESOURCE_GETTER_IMPL_H_
     94