Handle media access permission request

android_webview/native/permission/media_access_permission_request.cc

+// 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.
+
+#include "android_webview/native/permission/media_access_permission_request.h"
+
+#include "android_webview/native/permission/aw_permission_request.h"
+#include "content/public/browser/media_capture_devices.h"
+
+using content::MediaCaptureDevices;
+using content::MediaStreamDevice;
+using content::MediaStreamDevices;
+
+namespace android_webview {
+
+namespace {
+
+// Return the device specified by |device_id| if exists, otherwise the first
+// available device is returned.
+const MediaStreamDevice* GetDeviceByIdOrFirstAvailable(
+    const MediaStreamDevices& devices,
+    const std::string& device_id) {
+  if (devices.empty())
+    return NULL;
+
+  if (!device_id.empty()) {
+    for (size_t i = 0; i < devices.size(); ++i) {
+      if (devices[i].id == device_id)
+        return &devices[i];
+    }
+  }
+
+  return &devices[0];
+}
+
+}  // namespace
+
+MediaAccessPermissionRequest::MediaAccessPermissionRequest(
+    const content::MediaStreamRequest& request,
+    const content::MediaResponseCallback& callback)
+    : request_(request),
+      callback_(callback) {
+}
+
+MediaAccessPermissionRequest::~MediaAccessPermissionRequest() {
+}
+
+void MediaAccessPermissionRequest::NotifyRequestResult(bool allowed) {
+  scoped_ptr<content::MediaStreamUI> ui;
+  MediaStreamDevices devices;
+  if (!allowed) {
+    callback_.Run(devices, content::MEDIA_DEVICE_PERMISSION_DENIED, ui.Pass());
+    return;
+  }
+
+  if (request_.audio_type == content::MEDIA_DEVICE_AUDIO_CAPTURE) {
+    const MediaStreamDevices& audio_devices = audio_test_devices_.empty()?
+        MediaCaptureDevices::GetInstance()->GetAudioCaptureDevices() :
+        audio_test_devices_;
+    const MediaStreamDevice* device = GetDeviceByIdOrFirstAvailable(
+        audio_devices, request_.requested_audio_device_id);
+    if (device)
+      devices.push_back(*device);
+  }
+
+  if (request_.video_type == content::MEDIA_DEVICE_VIDEO_CAPTURE) {
+    const MediaStreamDevices& video_devices = video_test_devices_.empty()?
+        MediaCaptureDevices::GetInstance()->GetVideoCaptureDevices() :
+        video_test_devices_;
+    const MediaStreamDevice* device = GetDeviceByIdOrFirstAvailable(
+        video_devices, request_.requested_video_device_id);
+    if (device)
+      devices.push_back(*device);
+  }
+  callback_.Run(devices, devices.empty() ?
+                content::MEDIA_DEVICE_NO_HARDWARE : content::MEDIA_DEVICE_OK,
+                ui.Pass());
+}
+
+const GURL& MediaAccessPermissionRequest::GetOrigin() {
+  return request_.security_origin;
+}
+
+int64 MediaAccessPermissionRequest::GetResources() {
+  return (request_.audio_type == content::MEDIA_DEVICE_AUDIO_CAPTURE ?
+          AwPermissionRequest::AudioCapture : 0) |
+      (request_.video_type == content::MEDIA_DEVICE_VIDEO_CAPTURE ?
+       AwPermissionRequest::VideoCapture : 0);
+}
+
+}  // namespace android_webview