Isolated FS for media devices.

webkit/fileapi/isolated_mount_point_provider.cc

 // Copyright (c) 2012 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.
 
 #include "webkit/fileapi/isolated_mount_point_provider.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "base/sequenced_task_runner.h"
 #include "webkit/blob/local_file_stream_reader.h"
 #include "webkit/fileapi/file_system_callback_dispatcher.h"
 #include "webkit/fileapi/file_system_context.h"
 #include "webkit/fileapi/file_system_file_stream_reader.h"
 #include "webkit/fileapi/file_system_types.h"
 #include "webkit/fileapi/file_system_util.h"
 #include "webkit/fileapi/isolated_context.h"
 #include "webkit/fileapi/isolated_file_util.h"
 #include "webkit/fileapi/local_file_stream_writer.h"
 #include "webkit/fileapi/local_file_system_operation.h"
+#include "webkit/fileapi/media/media_file_system_config.h"
 #include "webkit/fileapi/media/media_path_filter.h"
 #include "webkit/fileapi/media/native_media_file_util.h"
 #include "webkit/fileapi/native_file_util.h"
 
+#if defined(SUPPORT_MEDIA_FILESYSTEM)
+#include "webkit/fileapi/media/device_media_file_util.h"
+#include "webkit/fileapi/media/media_device_map_service.h"
+#endif
+
 namespace fileapi {
 
 namespace {
 
 IsolatedContext* isolated_context() {
   return IsolatedContext::GetInstance();
 }
 
+#if defined(SUPPORT_MEDIA_FILESYSTEM)
+MediaDeviceInterfaceImpl* GetDeviceForUrl(const FileSystemURL& url,
+                                          FileSystemContext* context) {
+  return MediaDeviceMapService::GetInstance()->CreateOrGetMediaDevice(
+      url.filesystem_id(), context->file_task_runner());
+}
+#endif
+
 }  // namespace
 
-IsolatedMountPointProvider::IsolatedMountPointProvider()
-    : media_path_filter_(new MediaPathFilter()),
+IsolatedMountPointProvider::IsolatedMountPointProvider(
+    const FilePath& profile_path)
+    : profile_path_(profile_path),
+      media_path_filter_(new MediaPathFilter()),
       isolated_file_util_(new IsolatedFileUtil()),
       dragged_file_util_(new DraggedFileUtil()),
       native_media_file_util_(new NativeMediaFileUtil()) {
+  // TODO(kmadhusu): Initialize device_media_file_util_ in initialization list.
+#if defined(SUPPORT_MEDIA_FILESYSTEM)
+  device_media_file_util_.reset(new DeviceMediaFileUtil(profile_path_));
+#endif
 }
 
 IsolatedMountPointProvider::~IsolatedMountPointProvider() {
 }
 
 void IsolatedMountPointProvider::ValidateFileSystemRoot(
     const GURL& origin_url,
     FileSystemType type,
     bool create,
     const ValidateFileSystemCallback& callback) {
@@ skipping 27 matching lines @@
 
 FileSystemFileUtil* IsolatedMountPointProvider::GetFileUtil(
     FileSystemType type) {
   switch (type) {
     case kFileSystemTypeIsolated:
       return isolated_file_util_.get();
     case kFileSystemTypeDragged:
       return dragged_file_util_.get();
     case kFileSystemTypeNativeMedia:
       return native_media_file_util_.get();
+    case kFileSystemTypeDeviceMedia:
+#if defined(SUPPORT_MEDIA_FILESYSTEM)
+      return device_media_file_util_.get();
+#endif
 
-    case kFileSystemTypeDeviceMedia:
     case kFileSystemTypeTemporary:
     case kFileSystemTypePersistent:
     case kFileSystemTypeExternal:
     case kFileSystemTypeTest:
     case kFileSystemTypeUnknown:
       NOTREACHED();
   }
   return NULL;
 }
 
 FilePath IsolatedMountPointProvider::GetPathForPermissionsCheck(
     const FilePath& virtual_path) const {
   // For isolated filesystems we only check per-filesystem permissions.
   NOTREACHED();
   return virtual_path;
 }
 
 FileSystemOperationInterface*
 IsolatedMountPointProvider::CreateFileSystemOperation(
     const FileSystemURL& url,
     FileSystemContext* context) const {
   scoped_ptr<FileSystemOperationContext> operation_context(
       new FileSystemOperationContext(context));
   if (url.type() == kFileSystemTypeNativeMedia ||
       url.type() == kFileSystemTypeDeviceMedia)
     operation_context->set_media_path_filter(media_path_filter_.get());
+
+#if defined(SUPPORT_MEDIA_FILESYSTEM)
+  if (url.type() == kFileSystemTypeDeviceMedia) {
+    // GetDeviceForUrl can return NULL. We will handle in DeviceMediaFileUtil.
+    operation_context->set_media_device(GetDeviceForUrl(url, context));
+  }
+#endif
+
   return new LocalFileSystemOperation(context, operation_context.Pass());
 }
 
 webkit_blob::FileStreamReader*
 IsolatedMountPointProvider::CreateFileStreamReader(
     const FileSystemURL& url,
     int64 offset,
     FileSystemContext* context) const {
   return new webkit_blob::LocalFileStreamReader(
       context->file_task_runner(), url.path(), offset, base::Time());
 }
 
 FileStreamWriter* IsolatedMountPointProvider::CreateFileStreamWriter(
     const FileSystemURL& url,
     int64 offset,
     FileSystemContext* context) const {
   return new LocalFileStreamWriter(url.path(), offset);
 }
 
 FileSystemQuotaUtil* IsolatedMountPointProvider::GetQuotaUtil() {
   // No quota support.
   return NULL;
 }
 
 }  // namespace fileapi