Wire GetDeviceFormatsInUse from VideoCaptureManager to VideoCaptureImpl

The intended sequence of method calls, from the 
renderer side VideoCaptureImpl to browser side 
VideoCaptureManager and back follows this draft:

-VideoCaptureImpl::GetDeviceFormatsInUse()
---VideoCaptureMessageFilter::Send()

----VideoCaptureHost::OnGetDeviceFormatsInUse()
----Send(new VideoCaptureMsg_DeviceFormatsInUse(...)

---VideoCaptureMessageFilter::OnDeviceFormatsInUse()
--VideoCaptureImpl::OnDeviceFormatsInUse()

The final hop back happens via a callback passed to
VCI:GetDeviceFormatsInUse() on call time.

Unittests Added where applicable.

BUG=309554

Review URL: https://codereview.chromium.org/134193006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249151 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 24 insertions, 0 deletions

diff --git a/content/renderer/media/video_capture_impl.cc b/content/renderer/media/video_capture_impl.cc
index 38be11f..1912f09 100644
--- a/content/renderer/media/video_capture_impl.cc
+++ b/content/renderer/media/video_capture_impl.cc
@@ -99,6 +99,14 @@ void VideoCaptureImpl::GetDeviceSupportedFormats(
                  base::Unretained(this), media::BindToCurrentLoop(callback)));
 }
 
+void VideoCaptureImpl::GetDeviceFormatsInUse(
+    const DeviceFormatsInUseCallback& callback) {
+  DCHECK(!callback.is_null());
+  io_message_loop_proxy_->PostTask(FROM_HERE,
+      base::Bind(&VideoCaptureImpl::GetDeviceFormatsInUseOnIOThread,
+                 base::Unretained(this), media::BindToCurrentLoop(callback)));
+}
+
 void VideoCaptureImpl::InitOnIOThread() {
   DCHECK(io_message_loop_proxy_->BelongsToCurrentThread());
   message_filter_->AddDelegate(this);
@@ -189,6 +197,15 @@ void VideoCaptureImpl::GetDeviceSupportedFormatsOnIOThread(
                                                            session_id_));
 }
 
+void VideoCaptureImpl::GetDeviceFormatsInUseOnIOThread(
+    const DeviceFormatsInUseCallback& callback) {
+  DCHECK(io_message_loop_proxy_->BelongsToCurrentThread());
+  device_formats_in_use_callback_queue_.push_back(callback);
+  if (device_formats_in_use_callback_queue_.size() == 1)
+    Send(
+        new VideoCaptureHostMsg_GetDeviceFormatsInUse(device_id_, session_id_));
+}
+
 void VideoCaptureImpl::OnBufferCreated(
     base::SharedMemoryHandle handle,
     int length, int buffer_id) {
@@ -324,7 +341,14 @@ void VideoCaptureImpl::OnDeviceSupportedFormatsEnumerated(
   for (size_t i = 0; i < device_formats_callback_queue_.size(); ++i)
     device_formats_callback_queue_[i].Run(supported_formats);
   device_formats_callback_queue_.clear();
+}
 
+void VideoCaptureImpl::OnDeviceFormatsInUseReceived(
+    const media::VideoCaptureFormats& formats_in_use) {
+  DCHECK(io_message_loop_proxy_->BelongsToCurrentThread());
+  for (size_t i = 0; i < device_formats_in_use_callback_queue_.size(); ++i)
+    device_formats_in_use_callback_queue_[i].Run(formats_in_use);
+  device_formats_in_use_callback_queue_.clear();
 }
 
 void VideoCaptureImpl::OnDelegateAdded(int32 device_id) {