From Video Capture, abolish OnFrameInfo and enable resolution changes

content/browser/renderer_host/media/video_capture_controller_unittest.cc

Index: content/browser/renderer_host/media/video_capture_controller_unittest.cc
diff --git a/content/browser/renderer_host/media/video_capture_controller_unittest.cc b/content/browser/renderer_host/media/video_capture_controller_unittest.cc
index 1bb4c20f0ac611790a3a89f1c743685a1533c81d..7d3a7da03caf1e1c077b59411789cf11ba7cffd1 100644
--- a/content/browser/renderer_host/media/video_capture_controller_unittest.cc
+++ b/content/browser/renderer_host/media/video_capture_controller_unittest.cc
@@ -40,8 +40,8 @@ class MockVideoCaptureControllerEventHandler
   // These mock methods are delegated to by our fake implementation of
   // VideoCaptureControllerEventHandler, to be used in EXPECT_CALL().
   MOCK_METHOD1(DoBufferCreated, void(const VideoCaptureControllerID&));
+  MOCK_METHOD1(DoBufferDestroyed, void(const VideoCaptureControllerID&));
   MOCK_METHOD1(DoBufferReady, void(const VideoCaptureControllerID&));
-  MOCK_METHOD1(DoFrameInfo, void(const VideoCaptureControllerID&));
   MOCK_METHOD1(DoEnded, void(const VideoCaptureControllerID&));
   MOCK_METHOD1(DoError, void(const VideoCaptureControllerID&));
 
@@ -53,19 +53,19 @@ class MockVideoCaptureControllerEventHandler
                                int length, int buffer_id) OVERRIDE {
     DoBufferCreated(id);
   }
+  virtual void OnBufferDestroyed(const VideoCaptureControllerID& id,
+                                 int buffer_id) OVERRIDE {
+    DoBufferDestroyed(id);
+  }
   virtual void OnBufferReady(const VideoCaptureControllerID& id,
                              int buffer_id,
-                             base::Time timestamp) OVERRIDE {
+                             base::Time timestamp,
+                             const media::VideoCaptureFormat& format) OVERRIDE {
     DoBufferReady(id);
     base::MessageLoop::current()->PostTask(FROM_HERE,
         base::Bind(&VideoCaptureController::ReturnBuffer,
                    base::Unretained(controller_), id, this, buffer_id));
   }
-  virtual void OnFrameInfo(
-      const VideoCaptureControllerID& id,
-      const media::VideoCaptureCapability& format) OVERRIDE {
-    DoFrameInfo(id);
-  }
   virtual void OnEnded(const VideoCaptureControllerID& id) OVERRIDE {
     DoEnded(id);
     // OnEnded() must respond by (eventually) unregistering the client.
@@ -222,6 +222,8 @@ TEST_F(VideoCaptureControllerTest, NormalCaptureMultipleClients) {
   media::VideoCaptureParams session_1 = session_100;
   session_1.session_id = 1;
 
+  gfx::Size capture_resolution(444, 200);
+
   // The device format needn't match the VideoCaptureParams (the camera can do
   // what it wants). Pick something random to use for OnFrameInfo.
   media::VideoCaptureCapability device_format(
@@ -238,83 +240,64 @@ TEST_F(VideoCaptureControllerTest, NormalCaptureMultipleClients) {
                          base::kNullProcessHandle, session_100);
   controller_->AddClient(client_b_route_1, client_b_.get(),
                          base::kNullProcessHandle, session_300);
-  ASSERT_EQ(2, controller_->GetClientCount());
+  controller_->AddClient(client_a_route_2, client_a_.get(),
+                         base::kNullProcessHandle, session_200);
+  ASSERT_EQ(3, controller_->GetClientCount());
 
-  // The OnFrameInfo() event from the device, when processed by the controller,
-  // should generate client OnFrameInfo() and OnBufferCreated() events.
+  // Now, simulate an incoming captured frame from the capture device. As a side
+  // effect this will cause the first buffer to be shared with clients.
+  uint8 frame_no = 1;
+  scoped_refptr<media::VideoFrame> frame;
+  frame = device_->ReserveOutputBuffer(capture_resolution);
+  ASSERT_TRUE(frame);
+  media::FillYUV(frame, frame_no++, 0x22, 0x44);
   {
     InSequence s;
-    EXPECT_CALL(*client_a_, DoFrameInfo(client_a_route_1)).Times(1);
-    EXPECT_CALL(*client_a_, DoBufferCreated(client_a_route_1)).Times(kPoolSize);
+    EXPECT_CALL(*client_a_, DoBufferCreated(client_a_route_1)).Times(1);
+    EXPECT_CALL(*client_a_, DoBufferReady(client_a_route_1)).Times(1);
   }
   {
     InSequence s;
-    EXPECT_CALL(*client_b_, DoFrameInfo(client_b_route_1)).Times(1);
-    EXPECT_CALL(*client_b_, DoBufferCreated(client_b_route_1)).Times(kPoolSize);
+    EXPECT_CALL(*client_b_, DoBufferCreated(client_b_route_1)).Times(1);
+    EXPECT_CALL(*client_b_, DoBufferReady(client_b_route_1)).Times(1);
   }
-  device_->OnFrameInfo(device_format);
-  base::RunLoop().RunUntilIdle();
-  Mock::VerifyAndClearExpectations(client_a_.get());
-  Mock::VerifyAndClearExpectations(client_b_.get());
-
-  // When a third clients is subsequently added, the frame info and buffers
-  // should immediately be shared to the new clients.
   {
     InSequence s;
-    EXPECT_CALL(*client_a_, DoFrameInfo(client_a_route_2)).Times(1);
-    EXPECT_CALL(*client_a_, DoBufferCreated(client_a_route_2)).Times(kPoolSize);
+    EXPECT_CALL(*client_a_, DoBufferCreated(client_a_route_2)).Times(1);
+    EXPECT_CALL(*client_a_, DoBufferReady(client_a_route_2)).Times(1);
   }
-  controller_->AddClient(client_a_route_2, client_a_.get(),
-                         base::kNullProcessHandle, session_200);
-  Mock::VerifyAndClearExpectations(client_a_.get());
-
-  // Now, simulate an incoming captured frame from the capture device.
-  uint8 frame_no = 1;
-  scoped_refptr<media::VideoFrame> frame;
-  frame = device_->ReserveOutputBuffer();
-  ASSERT_TRUE(frame);
-  media::FillYUV(frame, frame_no++, 0x22, 0x44);
   device_->OnIncomingCapturedVideoFrame(frame, base::Time());
   frame = NULL;
 
-  // The buffer should be delivered to the clients in any order.
-  EXPECT_CALL(*client_a_, DoBufferReady(client_a_route_1)).Times(1);
-  EXPECT_CALL(*client_a_, DoBufferReady(client_a_route_2)).Times(1);
-  EXPECT_CALL(*client_b_, DoBufferReady(client_b_route_1)).Times(1);
   base::RunLoop().RunUntilIdle();
   Mock::VerifyAndClearExpectations(client_a_.get());
   Mock::VerifyAndClearExpectations(client_b_.get());
 
-  // Second frame. In this case pretend that the VideoFrame pointer is held
-  // by the device for a long delay. This shouldn't affect anything.
-  frame = device_->ReserveOutputBuffer();
+  // Second frame which ought to use the same shared memory buffer. In this case
+  // pretend that the VideoFrame pointer is held by the device for a long delay.
+  // This shouldn't affect anything.
+  frame = device_->ReserveOutputBuffer(capture_resolution);
   ASSERT_TRUE(frame);
   media::FillYUV(frame, frame_no++, 0x22, 0x44);
   device_->OnIncomingCapturedVideoFrame(frame, base::Time());
 
   // The buffer should be delivered to the clients in any order.
   EXPECT_CALL(*client_a_, DoBufferReady(client_a_route_1)).Times(1);
-  EXPECT_CALL(*client_a_, DoBufferReady(client_a_route_2)).Times(1);
   EXPECT_CALL(*client_b_, DoBufferReady(client_b_route_1)).Times(1);
+  EXPECT_CALL(*client_a_, DoBufferReady(client_a_route_2)).Times(1);
   base::RunLoop().RunUntilIdle();
   Mock::VerifyAndClearExpectations(client_a_.get());
   Mock::VerifyAndClearExpectations(client_b_.get());
   frame = NULL;
 
-  // Add a fourth client now that some frames have come through. It should get
-  // the buffer info, but it won't get any frames until new ones are captured.
-  {
-    InSequence s;
-    EXPECT_CALL(*client_b_, DoFrameInfo(client_b_route_2)).Times(1);
-    EXPECT_CALL(*client_b_, DoBufferCreated(client_b_route_2)).Times(kPoolSize);
-  }
+  // Add a fourth client now that some frames have come through.
   controller_->AddClient(client_b_route_2, client_b_.get(),
                          base::kNullProcessHandle, session_1);
   Mock::VerifyAndClearExpectations(client_b_.get());
 
   // Third, fourth, and fifth frames. Pretend they all arrive at the same time.
   for (int i = 0; i < kPoolSize; i++) {
-    frame = device_->ReserveOutputBuffer();
+    frame = device_->ReserveOutputBuffer(capture_resolution);
     ASSERT_TRUE(frame);
     ASSERT_EQ(media::VideoFrame::I420, frame->format());
     media::FillYUV(frame, frame_no++, 0x22, 0x44);
@@ -322,11 +305,20 @@ TEST_F(VideoCaptureControllerTest, NormalCaptureMultipleClients) {
 
   }
   // ReserveOutputBuffer ought to fail now, because the pool is depleted.
-  ASSERT_FALSE(device_->ReserveOutputBuffer());
+  ASSERT_FALSE(device_->ReserveOutputBuffer(capture_resolution));
+
+  // The new client needs to be told of 3 buffers; the old clients only 2.
+  EXPECT_CALL(*client_b_, DoBufferCreated(client_b_route_2)).Times(kPoolSize);
+  EXPECT_CALL(*client_b_, DoBufferReady(client_b_route_2)).Times(kPoolSize);
+  EXPECT_CALL(*client_a_, DoBufferCreated(client_a_route_1))
+      .Times(kPoolSize - 1);
   EXPECT_CALL(*client_a_, DoBufferReady(client_a_route_1)).Times(kPoolSize);
+  EXPECT_CALL(*client_a_, DoBufferCreated(client_a_route_2))
+      .Times(kPoolSize - 1);
   EXPECT_CALL(*client_a_, DoBufferReady(client_a_route_2)).Times(kPoolSize);
+  EXPECT_CALL(*client_b_, DoBufferCreated(client_b_route_1))
+      .Times(kPoolSize - 1);
   EXPECT_CALL(*client_b_, DoBufferReady(client_b_route_1)).Times(kPoolSize);
-  EXPECT_CALL(*client_b_, DoBufferReady(client_b_route_2)).Times(kPoolSize);
   base::RunLoop().RunUntilIdle();
   Mock::VerifyAndClearExpectations(client_a_.get());
   Mock::VerifyAndClearExpectations(client_b_.get());
@@ -338,11 +330,11 @@ TEST_F(VideoCaptureControllerTest, NormalCaptureMultipleClients) {
   EXPECT_CALL(*client_b_, DoEnded(client_b_route_1)).Times(1);
   controller_->StopSession(300);
   // Queue up another frame.
-  frame = device_->ReserveOutputBuffer();
+  frame = device_->ReserveOutputBuffer(capture_resolution);
   ASSERT_TRUE(frame);
   media::FillYUV(frame, frame_no++, 0x22, 0x44);
   device_->OnIncomingCapturedVideoFrame(frame, base::Time());
-  frame = device_->ReserveOutputBuffer();
+  frame = device_->ReserveOutputBuffer(capture_resolution);
   {
     // Kill A2 via session close (posts a task to disconnect, but A2 must not
     // be sent either of these two frames)..
@@ -421,16 +413,14 @@ TEST_F(VideoCaptureControllerTest, ErrorAfterDeviceCreation) {
       10, 10, 25, media::PIXEL_FORMAT_ARGB, 10, false,
       media::ConstantResolutionVideoCaptureDevice);
 
-  // Start the device and get as far as exchanging buffers with the subprocess.
-  // Then, signal an error and deliver the frame. The error should be propagated
-  // to clients; the frame should not be.
-  device_->OnFrameInfo(device_format);
-  EXPECT_CALL(*client_a_, DoFrameInfo(route_id)).Times(1);
-  EXPECT_CALL(*client_a_, DoBufferCreated(route_id)).Times(kPoolSize);
+  // Start the device. Then, before the first frame, signal an error and deliver
+  // the frame. The error should be propagated to clients; the frame should not
+  // be.
   base::RunLoop().RunUntilIdle();
   Mock::VerifyAndClearExpectations(client_a_.get());
 
-  scoped_refptr<media::VideoFrame> frame = device_->ReserveOutputBuffer();
+  scoped_refptr<media::VideoFrame> frame =
+      device_->ReserveOutputBuffer(gfx::Size(320, 240));
   ASSERT_TRUE(frame);
 
   device_->OnError();