Add mojo interface for audio rendering.

content/browser/renderer_host/media/render_frame_audio_output_service_unittest.cc

Index: content/browser/renderer_host/media/render_frame_audio_output_service_unittest.cc
diff --git a/content/browser/renderer_host/media/render_frame_audio_output_service_unittest.cc b/content/browser/renderer_host/media/render_frame_audio_output_service_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3e73719cbe181bca31cb79a0b005a0278c906538
--- /dev/null
+++ b/content/browser/renderer_host/media/render_frame_audio_output_service_unittest.cc
@@ -0,0 +1,255 @@
+// Copyright 2016 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 "content/browser/renderer_host/media/render_frame_audio_output_service.h"
+
+#include <cmath>
+#include <limits>
+#include <utility>
+
+#include "base/bind.h"
+#include "base/memory/shared_memory.h"
+#include "base/memory/shared_memory_handle.h"
+#include "base/run_loop.h"
+#include "base/sync_socket.h"
+#include "content/browser/audio_manager_thread.h"
+#include "content/browser/renderer_host/media/audio_output_service_context_impl.h"
+#include "content/browser/renderer_host/media/media_stream_manager.h"
+#include "content/common/media/audio_output.mojom.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/test/mock_render_process_host.h"
+#include "content/public/test/test_browser_context.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "media/audio/audio_output_controller.h"
+#include "media/audio/fake_audio_log_factory.h"
+#include "media/audio/fake_audio_manager.h"
+#include "media/base/audio_parameters.h"
+#include "media/base/media_switches.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/system/platform_handle.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+namespace {
+
+using testing::_;
+using testing::StrictMock;
+using testing::Return;
+using testing::Test;
+using AudioOutputService = mojom::RendererAudioOutputService;
+using AudioOutputServicePtr = mojo::InterfacePtr<AudioOutputService>;
+using AudioOutputServiceRequest = mojo::InterfaceRequest<AudioOutputService>;
+using AudioOutput = mojom::AudioOutput;
+using AudioOutputPtr = mojo::InterfacePtr<AudioOutput>;
+using AudioOutputRequest = mojo::InterfaceRequest<AudioOutput>;
+
+const int kRenderProcessId = 42;
+const int kRenderFrameId = 24;
+const char kSecurityOrigin[] = "http://localhost";
+const char kSalt[] = "salt";
+const media::AudioParameters params(
+    media::AudioParameters::AUDIO_PCM_LOW_LATENCY,
+    media::CHANNEL_LAYOUT_MONO,
+    44100 /*sample frequency*/,
+    16 /*bits per sample*/,
+    441 /*10 ms buffers*/);
+
+class MockAudioOutputDelegate : public AudioOutputDelegate {
+  MOCK_CONST_METHOD0(GetController,
+                     scoped_refptr<media::AudioOutputController>());
+  MOCK_CONST_METHOD0(GetStreamId, int());
+  MOCK_METHOD0(OnPlayStream, void());
+  MOCK_METHOD0(OnPauseStream, void());
+  MOCK_METHOD1(OnSetVolume, void(double));
+};
+
+class MockContext : public AudioOutputServiceContext {
+ public:
+  explicit MockContext(bool auth_ok, int render_process_id = kRenderProcessId)
+      : render_process_id_(render_process_id),
+        salt_(kSalt),
+        auth_ok_(auth_ok) {}
+
+  ~MockContext() { EXPECT_EQ(nullptr, delegate_); }
+
+  int GetRenderProcessId() const override { return render_process_id_; }
+
+  void RequestDeviceAuthorization(
+      int render_frame_id,
+      int session_id,
+      const std::string& device_id,
+      const url::Origin& security_origin,
+      AuthorizationCompletedCallback cb) const override {
+    EXPECT_EQ(render_frame_id, kRenderFrameId);
+    EXPECT_EQ(session_id, 0);
+    if (auth_ok_) {
+      base::ThreadTaskRunnerHandle::Get()->PostTask(
+          FROM_HERE,
+          base::Bind(cb, media::OutputDeviceStatus::OUTPUT_DEVICE_STATUS_OK,
+                     false, media::AudioParameters::UnavailableDeviceParams(),
+                     "default"));
+      return;
+    }
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
+        FROM_HERE,
+        base::Bind(cb, media::OutputDeviceStatus::
+                           OUTPUT_DEVICE_STATUS_ERROR_NOT_AUTHORIZED,
+                   false, media::AudioParameters::UnavailableDeviceParams(),
+                   "default"));
+  }
+
+  const std::string& GetSalt() const override { return salt_; }
+
+  void PrepareDelegateForCreation(
+      std::unique_ptr<AudioOutputDelegate> delegate) {
+    EXPECT_EQ(nullptr, delegate_);
+    delegate_ = std::move(delegate);
+  }
+
+  std::unique_ptr<AudioOutputDelegate> CreateDelegate(
+      const std::string& unique_device_id,
+      int render_frame_id,
+      AudioOutputDelegate::EventHandler* handler,
+      const media::AudioParameters& params) override {
+    EXPECT_NE(nullptr, delegate_);
+    return std::move(delegate_);
+  }
+
+  MOCK_METHOD1(OnServiceFinished,
+               void(mojom::RendererAudioOutputService* service));
+
+ private:
+  int render_process_id_ = kRenderProcessId;
+  const std::string salt_;
+  const bool auth_ok_;
+  std::unique_ptr<AudioOutputDelegate> delegate_;
+};
+
+void AuthCallback(media::OutputDeviceStatus* status_out,
+                  media::AudioParameters* params_out,
+                  std::string* id_out,
+                  media::OutputDeviceStatus status,
+                  const media::AudioParameters& params,
+                  const std::string& id) {
+  *status_out = status;
+  *params_out = params;
+  *id_out = id;
+}
+
+}  // namespace
+
+class RenderFrameAudioOutputServiceTest : public Test {
+ public:
+  RenderFrameAudioOutputServiceTest() {}
+
+  ~RenderFrameAudioOutputServiceTest() override {}
+
+ private:
+  TestBrowserThreadBundle thread_bundle_;
+};
+
+TEST_F(RenderFrameAudioOutputServiceTest, AuthWithoutStreamRequest) {
+  AudioOutputServicePtr service_ptr;
+  auto service_context_ = base::MakeUnique<MockContext>(true);
+  auto service_ = base::MakeUnique<RenderFrameAudioOutputService>(
+      service_context_.get(), kRenderFrameId, mojo::MakeRequest(&service_ptr));
+
+  media::OutputDeviceStatus status;
+  media::AudioParameters params2;
+  std::string id;
+  service_ptr->RequestDeviceAuthorization(
+      nullptr, /*session_id*/ 0, "default", url::Origin(GURL(kSecurityOrigin)),
+      base::Bind(&AuthCallback, base::Unretained(&status),
+                 base::Unretained(&params2), base::Unretained(&id)));
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(status, media::OUTPUT_DEVICE_STATUS_OK);
+  EXPECT_TRUE(id.empty());
+}
+
+TEST_F(RenderFrameAudioOutputServiceTest, AuthWithStreamRequest) {
+  AudioOutputServicePtr service_ptr;
+  AudioOutputPtr output_ptr;
+  auto service_context = base::MakeUnique<MockContext>(true);
+  service_context->PrepareDelegateForCreation(
+      base::MakeUnique<MockAudioOutputDelegate>());
+  auto service = base::MakeUnique<RenderFrameAudioOutputService>(
+      service_context.get(), kRenderFrameId, mojo::MakeRequest(&service_ptr));
+
+  media::OutputDeviceStatus status;
+  media::AudioParameters params2;
+  std::string id;
+  service_ptr->RequestDeviceAuthorization(
+      mojo::MakeRequest<AudioOutput>(&output_ptr), /*session_id*/ 0, "default",
+      url::Origin(GURL(kSecurityOrigin)),
+      base::Bind(&AuthCallback, base::Unretained(&status),
+                 base::Unretained(&params2), base::Unretained(&id)));
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(status, media::OUTPUT_DEVICE_STATUS_OK);
+  EXPECT_TRUE(id.empty());
+
+  output_ptr->Start(params,
+                    base::Bind([](mojo::ScopedSharedBufferHandle handle1,
+                                  mojo::ScopedHandle handle2) {}));
+  base::RunLoop().RunUntilIdle();
+  output_ptr.reset();
+}
+
+TEST_F(RenderFrameAudioOutputServiceTest, AuthWithStreamRequestDenied) {
+  AudioOutputServicePtr service_ptr;
+  AudioOutputPtr output_ptr;
+  auto service_context = base::MakeUnique<MockContext>(false);
+  auto service = base::MakeUnique<RenderFrameAudioOutputService>(
+      service_context.get(), kRenderFrameId, mojo::MakeRequest(&service_ptr));
+
+  media::OutputDeviceStatus status;
+  media::AudioParameters params2;
+  std::string id;
+  service_ptr->RequestDeviceAuthorization(
+      mojo::MakeRequest<AudioOutput>(&output_ptr), /*session_id*/ 0, "default",
+      url::Origin(GURL(kSecurityOrigin)),
+      base::Bind(&AuthCallback, base::Unretained(&status),
+                 base::Unretained(&params2), base::Unretained(&id)));
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(status, media::OUTPUT_DEVICE_STATUS_ERROR_NOT_AUTHORIZED);
+  EXPECT_TRUE(id.empty());
+
+  output_ptr->Start(params,
+                    base::Bind([](mojo::ScopedSharedBufferHandle handle1,
+                                  mojo::ScopedHandle handle2) {}));
+  base::RunLoop().RunUntilIdle();
+  output_ptr.reset();
+}
+
+TEST_F(RenderFrameAudioOutputServiceTest, OutOfRangeSessionId_BadMessage) {
+  // This test checks that we get a bad message if session_id is too large
+  // to fit in an integer. This ensures that we don't overflow when casting the
+  // int64_t to an int
+  if (sizeof(int) >= sizeof(int64_t)) {
+    // In this case, any int64_t would fit in an int, and the case we are
+    // checking for is impossible.
+    return;
+  }
+
+  TestBrowserContext browser_context;
+  MockRenderProcessHost rph(&browser_context);
+
+  AudioOutputServicePtr service_ptr;
+  auto service_context = base::MakeUnique<MockContext>(true, rph.GetID());
+  auto service = base::MakeUnique<RenderFrameAudioOutputService>(
+      service_context.get(), kRenderFrameId, mojo::MakeRequest(&service_ptr));
+  EXPECT_CALL(*service_context, OnServiceFinished(service.get()));
+
+  int64_t session_id = std::numeric_limits<int>::max();
+  ++session_id;
+  service_ptr->RequestDeviceAuthorization(
+      nullptr, session_id, "default", url::Origin(GURL(kSecurityOrigin)),
+      base::Bind([](media::OutputDeviceStatus, const media::AudioParameters&,
+                    const std::string&) { EXPECT_FALSE(true); }));
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(1, rph.bad_msg_count());
+}
+
+}  // namespace content