Move ContentVideoCaptureDeviceCore from src/content to src/media

content/browser/media/capture/video_capture_oracle_unittest.cc

Index: content/browser/media/capture/video_capture_oracle_unittest.cc
diff --git a/content/browser/media/capture/video_capture_oracle_unittest.cc b/content/browser/media/capture/video_capture_oracle_unittest.cc
deleted file mode 100644
index 4943ee34fe6ce87b5ce99b07ef8fed69fe8aa0dc..0000000000000000000000000000000000000000
--- a/content/browser/media/capture/video_capture_oracle_unittest.cc
+++ /dev/null
@@ -1,290 +0,0 @@
-// Copyright (c) 2013 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/media/capture/video_capture_oracle.h"
-
-#include "base/strings/stringprintf.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace content {
-
-namespace {
-
-base::TimeTicks InitialTestTimeTicks() {
-  return base::TimeTicks() + base::TimeDelta::FromSeconds(1);
-}
-
-}  // namespace
-
-// Tests that VideoCaptureOracle filters out events whose timestamps are
-// decreasing.
-TEST(VideoCaptureOracleTest, EnforcesEventTimeMonotonicity) {
-  const base::TimeDelta min_capture_period =
-      base::TimeDelta::FromSeconds(1) / 30;
-  const gfx::Rect damage_rect(0, 0, 1280, 720);
-  const base::TimeDelta event_increment = min_capture_period * 2;
-
-  VideoCaptureOracle oracle(min_capture_period);
-
-  base::TimeTicks t = InitialTestTimeTicks();
-  for (int i = 0; i < 10; ++i) {
-    t += event_increment;
-    ASSERT_TRUE(oracle.ObserveEventAndDecideCapture(
-        VideoCaptureOracle::kCompositorUpdate,
-        damage_rect, t));
-  }
-
-  base::TimeTicks furthest_event_time = t;
-  for (int i = 0; i < 10; ++i) {
-    t -= event_increment;
-    ASSERT_FALSE(oracle.ObserveEventAndDecideCapture(
-        VideoCaptureOracle::kCompositorUpdate,
-        damage_rect, t));
-  }
-
-  t = furthest_event_time;
-  for (int i = 0; i < 10; ++i) {
-    t += event_increment;
-    ASSERT_TRUE(oracle.ObserveEventAndDecideCapture(
-        VideoCaptureOracle::kCompositorUpdate,
-        damage_rect, t));
-  }
-}
-
-// Tests that VideoCaptureOracle is enforcing the requirement that
-// successfully captured frames are delivered in order.  Otherwise, downstream
-// consumers could be tripped-up by out-of-order frames or frame timestamps.
-TEST(VideoCaptureOracleTest, EnforcesFramesDeliveredInOrder) {
-  const base::TimeDelta min_capture_period =
-      base::TimeDelta::FromSeconds(1) / 30;
-  const gfx::Rect damage_rect(0, 0, 1280, 720);
-  const base::TimeDelta event_increment = min_capture_period * 2;
-
-  VideoCaptureOracle oracle(min_capture_period);
-
-  // Most basic scenario: Frames delivered one at a time, with no additional
-  // captures in-between deliveries.
-  base::TimeTicks t = InitialTestTimeTicks();
-  int last_frame_number;
-  base::TimeTicks ignored;
-  for (int i = 0; i < 10; ++i) {
-    t += event_increment;
-    ASSERT_TRUE(oracle.ObserveEventAndDecideCapture(
-        VideoCaptureOracle::kCompositorUpdate,
-        damage_rect, t));
-    last_frame_number = oracle.RecordCapture();
-    ASSERT_TRUE(oracle.CompleteCapture(last_frame_number, true, &ignored));
-  }
-
-  // Basic pipelined scenario: More than one frame in-flight at delivery points.
-  for (int i = 0; i < 50; ++i) {
-    const int num_in_flight = 1 + i % 3;
-    for (int j = 0; j < num_in_flight; ++j) {
-      t += event_increment;
-      ASSERT_TRUE(oracle.ObserveEventAndDecideCapture(
-          VideoCaptureOracle::kCompositorUpdate,
-          damage_rect, t));
-      last_frame_number = oracle.RecordCapture();
-    }
-    for (int j = num_in_flight - 1; j >= 0; --j) {
-      ASSERT_TRUE(
-          oracle.CompleteCapture(last_frame_number - j, true, &ignored));
-    }
-  }
-
-  // Pipelined scenario with successful out-of-order delivery attempts
-  // rejected.
-  for (int i = 0; i < 50; ++i) {
-    const int num_in_flight = 1 + i % 3;
-    for (int j = 0; j < num_in_flight; ++j) {
-      t += event_increment;
-      ASSERT_TRUE(oracle.ObserveEventAndDecideCapture(
-          VideoCaptureOracle::kCompositorUpdate,
-          damage_rect, t));
-      last_frame_number = oracle.RecordCapture();
-    }
-    ASSERT_TRUE(oracle.CompleteCapture(last_frame_number, true, &ignored));
-    for (int j = 1; j < num_in_flight; ++j) {
-      ASSERT_FALSE(
-          oracle.CompleteCapture(last_frame_number - j, true, &ignored));
-    }
-  }
-
-  // Pipelined scenario with successful delivery attempts accepted after an
-  // unsuccessful out of order delivery attempt.
-  for (int i = 0; i < 50; ++i) {
-    const int num_in_flight = 1 + i % 3;
-    for (int j = 0; j < num_in_flight; ++j) {
-      t += event_increment;
-      ASSERT_TRUE(oracle.ObserveEventAndDecideCapture(
-          VideoCaptureOracle::kCompositorUpdate,
-          damage_rect, t));
-      last_frame_number = oracle.RecordCapture();
-    }
-    // Report the last frame as an out of order failure.
-    ASSERT_FALSE(oracle.CompleteCapture(last_frame_number, false, &ignored));
-    for (int j = 1; j < num_in_flight - 1; ++j) {
-      ASSERT_TRUE(
-          oracle.CompleteCapture(last_frame_number - j, true, &ignored));
-    }
-
-  }
-}
-
-// Tests that VideoCaptureOracle transitions between using its two samplers in a
-// way that does not introduce severe jank, pauses, etc.
-TEST(VideoCaptureOracleTest, TransitionsSmoothlyBetweenSamplers) {
-  const base::TimeDelta min_capture_period =
-      base::TimeDelta::FromSeconds(1) / 30;
-  const gfx::Rect animation_damage_rect(0, 0, 1280, 720);
-  const base::TimeDelta event_increment = min_capture_period * 2;
-
-  VideoCaptureOracle oracle(min_capture_period);
-
-  // Run sequences of animation events and non-animation events through the
-  // oracle.  As the oracle transitions between each sampler, make sure the
-  // frame timestamps won't trip-up downstream consumers.
-  base::TimeTicks t = InitialTestTimeTicks();
-  base::TimeTicks last_frame_timestamp;
-  for (int i = 0; i < 1000; ++i) {
-    t += event_increment;
-
-    // For every 100 events, provide 50 that will cause the
-    // AnimatedContentSampler to lock-in, followed by 50 that will cause it to
-    // lock-out (i.e., the oracle will use the SmoothEventSampler instead).
-    const bool provide_animated_content_event =
-        (i % 100) >= 25 && (i % 100) < 75;
-
-    // Only the few events that trigger the lock-out transition should be
-    // dropped, because the AnimatedContentSampler doesn't yet realize the
-    // animation ended.  Otherwise, the oracle should always decide to sample
-    // because one of its samplers says to.
-    const bool require_oracle_says_sample = (i % 100) < 75 || (i % 100) >= 78;
-    const bool oracle_says_sample = oracle.ObserveEventAndDecideCapture(
-        VideoCaptureOracle::kCompositorUpdate,
-        provide_animated_content_event ? animation_damage_rect : gfx::Rect(),
-        t);
-    if (require_oracle_says_sample)
-      ASSERT_TRUE(oracle_says_sample);
-    if (!oracle_says_sample) {
-      ASSERT_EQ(base::TimeDelta(), oracle.estimated_frame_duration());
-      continue;
-    }
-    ASSERT_LT(base::TimeDelta(), oracle.estimated_frame_duration());
-
-    const int frame_number = oracle.RecordCapture();
-
-    base::TimeTicks frame_timestamp;
-    ASSERT_TRUE(oracle.CompleteCapture(frame_number, true, &frame_timestamp));
-    ASSERT_FALSE(frame_timestamp.is_null());
-    if (!last_frame_timestamp.is_null()) {
-      const base::TimeDelta delta = frame_timestamp - last_frame_timestamp;
-      EXPECT_LE(event_increment.InMicroseconds(), delta.InMicroseconds());
-      // Right after the AnimatedContentSampler lock-out transition, there were
-      // a few frames dropped, so allow a gap in the timestamps.  Otherwise, the
-      // delta between frame timestamps should never be more than 2X the
-      // |event_increment|.
-      const base::TimeDelta max_acceptable_delta = (i % 100) == 78 ?
-          event_increment * 5 : event_increment * 2;
-      EXPECT_GE(max_acceptable_delta.InMicroseconds(), delta.InMicroseconds());
-    }
-    last_frame_timestamp = frame_timestamp;
-  }
-}
-
-// Tests that VideoCaptureOracle prevents timer polling from initiating
-// simultaneous captures.
-TEST(VideoCaptureOracleTest, SamplesOnlyOneOverdueFrameAtATime) {
-  const base::TimeDelta min_capture_period =
-      base::TimeDelta::FromSeconds(1) / 30;
-  const base::TimeDelta vsync_interval =
-      base::TimeDelta::FromSeconds(1) / 60;
-  const base::TimeDelta timer_interval = base::TimeDelta::FromMilliseconds(
-      VideoCaptureOracle::kMinTimerPollPeriodMillis);
-
-  VideoCaptureOracle oracle(min_capture_period);
-
-  // Have the oracle observe some compositor events.  Simulate that each capture
-  // completes successfully.
-  base::TimeTicks t = InitialTestTimeTicks();
-  base::TimeTicks ignored;
-  bool did_complete_a_capture = false;
-  for (int i = 0; i < 10; ++i) {
-    t += vsync_interval;
-    if (oracle.ObserveEventAndDecideCapture(
-            VideoCaptureOracle::kCompositorUpdate, gfx::Rect(), t)) {
-      ASSERT_TRUE(
-          oracle.CompleteCapture(oracle.RecordCapture(), true, &ignored));
-      did_complete_a_capture = true;
-    }
-  }
-  ASSERT_TRUE(did_complete_a_capture);
-
-  // Start one more compositor-based capture, but do not notify of completion
-  // yet.
-  for (int i = 0; i <= 10; ++i) {
-    ASSERT_GT(10, i) << "BUG: Seems like it'll never happen!";
-    t += vsync_interval;
-    if (oracle.ObserveEventAndDecideCapture(
-            VideoCaptureOracle::kCompositorUpdate, gfx::Rect(), t)) {
-      break;
-    }
-  }
-  int frame_number = oracle.RecordCapture();
-
-  // Stop providing the compositor events and start providing timer polling
-  // events.  No overdue samplings should be recommended because of the
-  // not-yet-complete compositor-based capture.
-  for (int i = 0; i < 10; ++i) {
-    t += timer_interval;
-    ASSERT_FALSE(oracle.ObserveEventAndDecideCapture(
-        VideoCaptureOracle::kTimerPoll, gfx::Rect(), t));
-  }
-
-  // Now, complete the oustanding compositor-based capture and continue
-  // providing timer polling events.  The oracle should start recommending
-  // sampling again.
-  ASSERT_TRUE(oracle.CompleteCapture(frame_number, true, &ignored));
-  did_complete_a_capture = false;
-  for (int i = 0; i < 10; ++i) {
-    t += timer_interval;
-    if (oracle.ObserveEventAndDecideCapture(
-            VideoCaptureOracle::kTimerPoll, gfx::Rect(), t)) {
-      ASSERT_TRUE(
-          oracle.CompleteCapture(oracle.RecordCapture(), true, &ignored));
-      did_complete_a_capture = true;
-    }
-  }
-  ASSERT_TRUE(did_complete_a_capture);
-
-  // Start one more timer-based capture, but do not notify of completion yet.
-  for (int i = 0; i <= 10; ++i) {
-    ASSERT_GT(10, i) << "BUG: Seems like it'll never happen!";
-    t += timer_interval;
-    if (oracle.ObserveEventAndDecideCapture(
-            VideoCaptureOracle::kTimerPoll, gfx::Rect(), t)) {
-      break;
-    }
-  }
-  frame_number = oracle.RecordCapture();
-
-  // Confirm that the oracle does not recommend sampling until the outstanding
-  // timer-based capture completes.
-  for (int i = 0; i < 10; ++i) {
-    t += timer_interval;
-    ASSERT_FALSE(oracle.ObserveEventAndDecideCapture(
-        VideoCaptureOracle::kTimerPoll, gfx::Rect(), t));
-  }
-  ASSERT_TRUE(oracle.CompleteCapture(frame_number, true, &ignored));
-  for (int i = 0; i <= 10; ++i) {
-    ASSERT_GT(10, i) << "BUG: Seems like it'll never happen!";
-    t += timer_interval;
-    if (oracle.ObserveEventAndDecideCapture(
-            VideoCaptureOracle::kTimerPoll, gfx::Rect(), t)) {
-      break;
-    }
-  }
-}
-
-}  // namespace content