Revert of Delete VideoFrameFactory, CapturedFrame, and related code.

webrtc/media/engine/webrtcvideoframefactory_unittest.cc

+/*
+ *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <string.h>
+
+#include <memory>
+
+#include "webrtc/base/gunit.h"
+#include "webrtc/media/base/videocapturer.h"
+#include "webrtc/media/engine/webrtcvideoframe.h"
+#include "webrtc/media/engine/webrtcvideoframefactory.h"
+
+class WebRtcVideoFrameFactoryTest : public testing::Test {
+ public:
+  WebRtcVideoFrameFactoryTest() {}
+
+  void InitFrame(webrtc::VideoRotation frame_rotation) {
+    const int frame_width = 1920;
+    const int frame_height = 1080;
+
+    // Build the CapturedFrame.
+    captured_frame_.fourcc = cricket::FOURCC_I420;
+    captured_frame_.pixel_width = 1;
+    captured_frame_.pixel_height = 1;
+    captured_frame_.time_stamp = rtc::TimeNanos();
+    captured_frame_.rotation = frame_rotation;
+    captured_frame_.width = frame_width;
+    captured_frame_.height = frame_height;
+    captured_frame_.data_size =
+        (frame_width * frame_height) +
+        ((frame_width + 1) / 2) * ((frame_height + 1) / 2) * 2;
+    captured_frame_buffer_.reset(new uint8_t[captured_frame_.data_size]);
+    // Initialize memory to satisfy DrMemory tests.
+    memset(captured_frame_buffer_.get(), 0, captured_frame_.data_size);
+    captured_frame_.data = captured_frame_buffer_.get();
+  }
+
+  void VerifyFrame(cricket::VideoFrame* dest_frame,
+                   webrtc::VideoRotation src_rotation,
+                   int src_width,
+                   int src_height,
+                   bool apply_rotation) {
+    if (!apply_rotation) {
+      EXPECT_EQ(dest_frame->rotation(), src_rotation);
+      EXPECT_EQ(dest_frame->width(), src_width);
+      EXPECT_EQ(dest_frame->height(), src_height);
+    } else {
+      EXPECT_EQ(dest_frame->rotation(), webrtc::kVideoRotation_0);
+      if (src_rotation == webrtc::kVideoRotation_90 ||
+          src_rotation == webrtc::kVideoRotation_270) {
+        EXPECT_EQ(dest_frame->width(), src_height);
+        EXPECT_EQ(dest_frame->height(), src_width);
+      } else {
+        EXPECT_EQ(dest_frame->width(), src_width);
+        EXPECT_EQ(dest_frame->height(), src_height);
+      }
+    }
+  }
+
+  void TestCreateAliasedFrame(bool apply_rotation) {
+    cricket::VideoFrameFactory& factory = factory_;
+    factory.SetApplyRotation(apply_rotation);
+    InitFrame(webrtc::kVideoRotation_270);
+    const cricket::CapturedFrame& captured_frame = get_captured_frame();
+    // Create the new frame from the CapturedFrame.
+    std::unique_ptr<cricket::VideoFrame> frame;
+    int new_width = captured_frame.width / 2;
+    int new_height = captured_frame.height / 2;
+    frame.reset(factory.CreateAliasedFrame(&captured_frame, new_width,
+                                           new_height, new_width, new_height));
+    VerifyFrame(frame.get(), webrtc::kVideoRotation_270, new_width, new_height,
+                apply_rotation);
+
+    frame.reset(factory.CreateAliasedFrame(
+        &captured_frame, new_width, new_height, new_width / 2, new_height / 2));
+    VerifyFrame(frame.get(), webrtc::kVideoRotation_270, new_width / 2,
+                new_height / 2, apply_rotation);
+
+    // Reset the frame first so it's exclusive hence we could go through the
+    // StretchToFrame code path in CreateAliasedFrame.
+    frame.reset();
+    frame.reset(factory.CreateAliasedFrame(
+        &captured_frame, new_width, new_height, new_width / 2, new_height / 2));
+    VerifyFrame(frame.get(), webrtc::kVideoRotation_270, new_width / 2,
+                new_height / 2, apply_rotation);
+  }
+
+  const cricket::CapturedFrame& get_captured_frame() { return captured_frame_; }
+
+ private:
+  cricket::CapturedFrame captured_frame_;
+  std::unique_ptr<uint8_t[]> captured_frame_buffer_;
+  cricket::WebRtcVideoFrameFactory factory_;
+};
+
+TEST_F(WebRtcVideoFrameFactoryTest, NoApplyRotation) {
+  TestCreateAliasedFrame(false);
+}
+
+TEST_F(WebRtcVideoFrameFactoryTest, ApplyRotation) {
+  TestCreateAliasedFrame(true);
+}