Add bit depth information to PlanarYuvBuffer

For HDR codecs, we expect to receive input that has 10-bit color depth. But
currently, WebRTC assumes only 8-bit input and output. This CL adds k010
format that represent this input.

Bug: webrtc:9376
Change-Id: Ie7df64b0eddb0752b493e0457a49083a1e87ba51
Reviewed-on: https://webrtc-review.googlesource.com/81920
Commit-Queue: Emircan Uysaler <emircan@webrtc.org>
Reviewed-by: Niklas Enbom <niklas.enbom@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23749}
diff --git a/common_video/BUILD.gn b/common_video/BUILD.gn
index 0f4d400..7b08e42 100644
--- a/common_video/BUILD.gn
+++ b/common_video/BUILD.gn
@@ -95,8 +95,8 @@
       "h264/sps_parser_unittest.cc",
       "h264/sps_vui_rewriter_unittest.cc",
       "i420_buffer_pool_unittest.cc",
-      "i420_video_frame_unittest.cc",
       "libyuv/libyuv_unittest.cc",
+      "video_frame_unittest.cc",
     ]
 
     if (!build_with_chromium && is_clang) {
@@ -107,6 +107,7 @@
     deps = [
       ":common_video",
       "../api/video:video_frame",
+      "../api/video:video_frame_i010",
       "../api/video:video_frame_i420",
       "../modules/video_capture:video_capture",
       "../rtc_base:rtc_base",
diff --git a/common_video/i420_video_frame_unittest.cc b/common_video/i420_video_frame_unittest.cc
deleted file mode 100644
index 4fec8cf..0000000
--- a/common_video/i420_video_frame_unittest.cc
+++ /dev/null
@@ -1,291 +0,0 @@
-/*
- *  Copyright (c) 2012 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 <math.h>
-#include <string.h>
-
-#include "api/video/i420_buffer.h"
-#include "api/video/video_frame.h"
-#include "rtc_base/bind.h"
-#include "rtc_base/timeutils.h"
-#include "test/fake_texture_frame.h"
-#include "test/frame_utils.h"
-#include "test/gtest.h"
-
-namespace webrtc {
-
-namespace {
-
-rtc::scoped_refptr<I420Buffer> CreateGradient(int width, int height) {
-  rtc::scoped_refptr<I420Buffer> buffer(I420Buffer::Create(width, height));
-  // Initialize with gradient, Y = 128(x/w + y/h), U = 256 x/w, V = 256 y/h
-  for (int x = 0; x < width; x++) {
-    for (int y = 0; y < height; y++) {
-      buffer->MutableDataY()[x + y * width] =
-          128 * (x * height + y * width) / (width * height);
-    }
-  }
-  int chroma_width = buffer->ChromaWidth();
-  int chroma_height = buffer->ChromaHeight();
-  for (int x = 0; x < chroma_width; x++) {
-    for (int y = 0; y < chroma_height; y++) {
-      buffer->MutableDataU()[x + y * chroma_width] =
-          255 * x / (chroma_width - 1);
-      buffer->MutableDataV()[x + y * chroma_width] =
-          255 * y / (chroma_height - 1);
-    }
-  }
-  return buffer;
-}
-
-// The offsets and sizes describe the rectangle extracted from the
-// original (gradient) frame, in relative coordinates where the
-// original frame correspond to the unit square, 0.0 <= x, y < 1.0.
-void CheckCrop(const webrtc::I420BufferInterface& frame,
-               double offset_x,
-               double offset_y,
-               double rel_width,
-               double rel_height) {
-  int width = frame.width();
-  int height = frame.height();
-  // Check that pixel values in the corners match the gradient used
-  // for initialization.
-  for (int i = 0; i < 2; i++) {
-    for (int j = 0; j < 2; j++) {
-      // Pixel coordinates of the corner.
-      int x = i * (width - 1);
-      int y = j * (height - 1);
-      // Relative coordinates, range 0.0 - 1.0 correspond to the
-      // size of the uncropped input frame.
-      double orig_x = offset_x + i * rel_width;
-      double orig_y = offset_y + j * rel_height;
-
-      EXPECT_NEAR(frame.DataY()[x + y * frame.StrideY()] / 256.0,
-                  (orig_x + orig_y) / 2, 0.02);
-      EXPECT_NEAR(frame.DataU()[x / 2 + (y / 2) * frame.StrideU()] / 256.0,
-                  orig_x, 0.02);
-      EXPECT_NEAR(frame.DataV()[x / 2 + (y / 2) * frame.StrideV()] / 256.0,
-                  orig_y, 0.02);
-    }
-  }
-}
-
-void CheckRotate(int width,
-                 int height,
-                 webrtc::VideoRotation rotation,
-                 const webrtc::I420BufferInterface& rotated) {
-  int rotated_width = width;
-  int rotated_height = height;
-
-  if (rotation == kVideoRotation_90 || rotation == kVideoRotation_270) {
-    std::swap(rotated_width, rotated_height);
-  }
-  EXPECT_EQ(rotated_width, rotated.width());
-  EXPECT_EQ(rotated_height, rotated.height());
-
-  // Clock-wise order (with 0,0 at top-left)
-  const struct {
-    int x;
-    int y;
-  } corners[] = {{0, 0}, {1, 0}, {1, 1}, {0, 1}};
-  // Corresponding corner colors of the frame produced by CreateGradient.
-  const struct {
-    int y;
-    int u;
-    int v;
-  } colors[] = {{0, 0, 0}, {127, 255, 0}, {255, 255, 255}, {127, 0, 255}};
-  int corner_offset = static_cast<int>(rotation) / 90;
-
-  for (int i = 0; i < 4; i++) {
-    int j = (i + corner_offset) % 4;
-    int x = corners[j].x * (rotated_width - 1);
-    int y = corners[j].y * (rotated_height - 1);
-    EXPECT_EQ(colors[i].y, rotated.DataY()[x + y * rotated.StrideY()]);
-    EXPECT_EQ(colors[i].u,
-              rotated.DataU()[(x / 2) + (y / 2) * rotated.StrideU()]);
-    EXPECT_EQ(colors[i].v,
-              rotated.DataV()[(x / 2) + (y / 2) * rotated.StrideV()]);
-  }
-}
-
-}  // namespace
-
-TEST(TestVideoFrame, WidthHeightValues) {
-  VideoFrame frame(I420Buffer::Create(10, 10, 10, 14, 90),
-                   webrtc::kVideoRotation_0,
-                   789 * rtc::kNumMicrosecsPerMillisec);
-  const int valid_value = 10;
-  EXPECT_EQ(valid_value, frame.width());
-  EXPECT_EQ(valid_value, frame.height());
-  frame.set_timestamp(123u);
-  EXPECT_EQ(123u, frame.timestamp());
-  frame.set_ntp_time_ms(456);
-  EXPECT_EQ(456, frame.ntp_time_ms());
-  EXPECT_EQ(789, frame.render_time_ms());
-}
-
-TEST(TestVideoFrame, ShallowCopy) {
-  uint32_t timestamp = 1;
-  int64_t ntp_time_ms = 2;
-  int64_t timestamp_us = 3;
-  int stride_y = 15;
-  int stride_u = 10;
-  int stride_v = 10;
-  int width = 15;
-  int height = 15;
-
-  const int kSizeY = 400;
-  const int kSizeU = 100;
-  const int kSizeV = 100;
-  const VideoRotation kRotation = kVideoRotation_270;
-  uint8_t buffer_y[kSizeY];
-  uint8_t buffer_u[kSizeU];
-  uint8_t buffer_v[kSizeV];
-  memset(buffer_y, 16, kSizeY);
-  memset(buffer_u, 8, kSizeU);
-  memset(buffer_v, 4, kSizeV);
-
-  VideoFrame frame1(I420Buffer::Copy(width, height, buffer_y, stride_y,
-                                     buffer_u, stride_u, buffer_v, stride_v),
-                    kRotation, 0);
-  frame1.set_timestamp(timestamp);
-  frame1.set_ntp_time_ms(ntp_time_ms);
-  frame1.set_timestamp_us(timestamp_us);
-  VideoFrame frame2(frame1);
-
-  EXPECT_EQ(frame1.video_frame_buffer(), frame2.video_frame_buffer());
-  rtc::scoped_refptr<I420BufferInterface> yuv1 =
-      frame1.video_frame_buffer()->GetI420();
-  rtc::scoped_refptr<I420BufferInterface> yuv2 =
-      frame2.video_frame_buffer()->GetI420();
-  EXPECT_EQ(yuv1->DataY(), yuv2->DataY());
-  EXPECT_EQ(yuv1->DataU(), yuv2->DataU());
-  EXPECT_EQ(yuv1->DataV(), yuv2->DataV());
-
-  EXPECT_EQ(frame2.timestamp(), frame1.timestamp());
-  EXPECT_EQ(frame2.ntp_time_ms(), frame1.ntp_time_ms());
-  EXPECT_EQ(frame2.timestamp_us(), frame1.timestamp_us());
-  EXPECT_EQ(frame2.rotation(), frame1.rotation());
-
-  frame2.set_timestamp(timestamp + 1);
-  frame2.set_ntp_time_ms(ntp_time_ms + 1);
-  frame2.set_timestamp_us(timestamp_us + 1);
-  frame2.set_rotation(kVideoRotation_90);
-
-  EXPECT_NE(frame2.timestamp(), frame1.timestamp());
-  EXPECT_NE(frame2.ntp_time_ms(), frame1.ntp_time_ms());
-  EXPECT_NE(frame2.timestamp_us(), frame1.timestamp_us());
-  EXPECT_NE(frame2.rotation(), frame1.rotation());
-}
-
-TEST(TestVideoFrame, TextureInitialValues) {
-  VideoFrame frame = test::FakeNativeBuffer::CreateFrame(
-      640, 480, 100, 10, webrtc::kVideoRotation_0);
-  EXPECT_EQ(640, frame.width());
-  EXPECT_EQ(480, frame.height());
-  EXPECT_EQ(100u, frame.timestamp());
-  EXPECT_EQ(10, frame.render_time_ms());
-  ASSERT_TRUE(frame.video_frame_buffer() != nullptr);
-  EXPECT_TRUE(frame.video_frame_buffer()->type() ==
-              VideoFrameBuffer::Type::kNative);
-
-  frame.set_timestamp(200);
-  EXPECT_EQ(200u, frame.timestamp());
-  frame.set_timestamp_us(20);
-  EXPECT_EQ(20, frame.timestamp_us());
-}
-
-TEST(TestI420FrameBuffer, Copy) {
-  rtc::scoped_refptr<I420Buffer> buf1(I420Buffer::Create(20, 10));
-  memset(buf1->MutableDataY(), 1, 200);
-  memset(buf1->MutableDataU(), 2, 50);
-  memset(buf1->MutableDataV(), 3, 50);
-  rtc::scoped_refptr<I420Buffer> buf2 = I420Buffer::Copy(*buf1);
-  EXPECT_TRUE(test::FrameBufsEqual(buf1, buf2));
-}
-
-TEST(TestI420FrameBuffer, Scale) {
-  rtc::scoped_refptr<I420Buffer> buf = CreateGradient(200, 100);
-
-  // Pure scaling, no cropping.
-  rtc::scoped_refptr<I420Buffer> scaled_buffer(I420Buffer::Create(150, 75));
-
-  scaled_buffer->ScaleFrom(*buf);
-  CheckCrop(*scaled_buffer, 0.0, 0.0, 1.0, 1.0);
-}
-
-TEST(TestI420FrameBuffer, CropXCenter) {
-  rtc::scoped_refptr<I420Buffer> buf = CreateGradient(200, 100);
-
-  // Pure center cropping, no scaling.
-  rtc::scoped_refptr<I420Buffer> scaled_buffer(I420Buffer::Create(100, 100));
-
-  scaled_buffer->CropAndScaleFrom(*buf, 50, 0, 100, 100);
-  CheckCrop(*scaled_buffer, 0.25, 0.0, 0.5, 1.0);
-}
-
-TEST(TestI420FrameBuffer, CropXNotCenter) {
-  rtc::scoped_refptr<I420Buffer> buf = CreateGradient(200, 100);
-
-  // Non-center cropping, no scaling.
-  rtc::scoped_refptr<I420Buffer> scaled_buffer(I420Buffer::Create(100, 100));
-
-  scaled_buffer->CropAndScaleFrom(*buf, 25, 0, 100, 100);
-  CheckCrop(*scaled_buffer, 0.125, 0.0, 0.5, 1.0);
-}
-
-TEST(TestI420FrameBuffer, CropYCenter) {
-  rtc::scoped_refptr<I420Buffer> buf = CreateGradient(100, 200);
-
-  // Pure center cropping, no scaling.
-  rtc::scoped_refptr<I420Buffer> scaled_buffer(I420Buffer::Create(100, 100));
-
-  scaled_buffer->CropAndScaleFrom(*buf, 0, 50, 100, 100);
-  CheckCrop(*scaled_buffer, 0.0, 0.25, 1.0, 0.5);
-}
-
-TEST(TestI420FrameBuffer, CropYNotCenter) {
-  rtc::scoped_refptr<I420Buffer> buf = CreateGradient(100, 200);
-
-  // Non-center cropping, no scaling.
-  rtc::scoped_refptr<I420Buffer> scaled_buffer(I420Buffer::Create(100, 100));
-
-  scaled_buffer->CropAndScaleFrom(*buf, 0, 25, 100, 100);
-  CheckCrop(*scaled_buffer, 0.0, 0.125, 1.0, 0.5);
-}
-
-TEST(TestI420FrameBuffer, CropAndScale16x9) {
-  rtc::scoped_refptr<I420Buffer> buf = CreateGradient(640, 480);
-
-  // Center crop to 640 x 360 (16/9 aspect), then scale down by 2.
-  rtc::scoped_refptr<I420Buffer> scaled_buffer(I420Buffer::Create(320, 180));
-
-  scaled_buffer->CropAndScaleFrom(*buf);
-  CheckCrop(*scaled_buffer, 0.0, 0.125, 1.0, 0.75);
-}
-
-class TestI420BufferRotate
-    : public ::testing::TestWithParam<webrtc::VideoRotation> {};
-
-TEST_P(TestI420BufferRotate, Rotates) {
-  rtc::scoped_refptr<I420BufferInterface> buffer = CreateGradient(640, 480);
-  rtc::scoped_refptr<I420BufferInterface> rotated_buffer =
-      I420Buffer::Rotate(*buffer, GetParam());
-  CheckRotate(640, 480, GetParam(), *rotated_buffer);
-}
-
-INSTANTIATE_TEST_CASE_P(Rotate,
-                        TestI420BufferRotate,
-                        ::testing::Values(kVideoRotation_0,
-                                          kVideoRotation_90,
-                                          kVideoRotation_180,
-                                          kVideoRotation_270));
-
-}  // namespace webrtc
diff --git a/common_video/include/video_frame_buffer.h b/common_video/include/video_frame_buffer.h
index 312979b..11bb812 100644
--- a/common_video/include/video_frame_buffer.h
+++ b/common_video/include/video_frame_buffer.h
@@ -103,6 +103,17 @@
     int v_stride,
     const rtc::Callback0<void>& no_longer_used);
 
+rtc::scoped_refptr<I010BufferInterface> WrapI010Buffer(
+    int width,
+    int height,
+    const uint16_t* y_plane,
+    int y_stride,
+    const uint16_t* u_plane,
+    int u_stride,
+    const uint16_t* v_plane,
+    int v_stride,
+    const rtc::Callback0<void>& no_longer_used);
+
 }  // namespace webrtc
 
 #endif  // COMMON_VIDEO_INCLUDE_VIDEO_FRAME_BUFFER_H_
diff --git a/common_video/video_frame_buffer.cc b/common_video/video_frame_buffer.cc
index eeb77a2..2cd0b29 100644
--- a/common_video/video_frame_buffer.cc
+++ b/common_video/video_frame_buffer.cc
@@ -130,6 +130,77 @@
   return i420_buffer;
 }
 
+// Template to implement a wrapped buffer for a PlanarYuv16BBuffer.
+template <typename Base>
+class WrappedYuv16BBuffer : public Base {
+ public:
+  WrappedYuv16BBuffer(int width,
+                      int height,
+                      const uint16_t* y_plane,
+                      int y_stride,
+                      const uint16_t* u_plane,
+                      int u_stride,
+                      const uint16_t* v_plane,
+                      int v_stride,
+                      const rtc::Callback0<void>& no_longer_used)
+      : width_(width),
+        height_(height),
+        y_plane_(y_plane),
+        u_plane_(u_plane),
+        v_plane_(v_plane),
+        y_stride_(y_stride),
+        u_stride_(u_stride),
+        v_stride_(v_stride),
+        no_longer_used_cb_(no_longer_used) {}
+
+  ~WrappedYuv16BBuffer() override { no_longer_used_cb_(); }
+
+  int width() const override { return width_; }
+
+  int height() const override { return height_; }
+
+  const uint16_t* DataY() const override { return y_plane_; }
+
+  const uint16_t* DataU() const override { return u_plane_; }
+
+  const uint16_t* DataV() const override { return v_plane_; }
+
+  int StrideY() const override { return y_stride_; }
+
+  int StrideU() const override { return u_stride_; }
+
+  int StrideV() const override { return v_stride_; }
+
+ private:
+  friend class rtc::RefCountedObject<WrappedYuv16BBuffer>;
+
+  const int width_;
+  const int height_;
+  const uint16_t* const y_plane_;
+  const uint16_t* const u_plane_;
+  const uint16_t* const v_plane_;
+  const int y_stride_;
+  const int u_stride_;
+  const int v_stride_;
+  rtc::Callback0<void> no_longer_used_cb_;
+};
+
+class I010BufferBase : public I010BufferInterface {
+ public:
+  rtc::scoped_refptr<I420BufferInterface> ToI420() final;
+};
+
+rtc::scoped_refptr<I420BufferInterface> I010BufferBase::ToI420() {
+  rtc::scoped_refptr<I420Buffer> i420_buffer =
+      I420Buffer::Create(width(), height());
+  libyuv::I010ToI420(DataY(), StrideY(), DataU(), StrideU(), DataV(), StrideV(),
+                     i420_buffer->MutableDataY(), i420_buffer->StrideY(),
+                     i420_buffer->MutableDataU(), i420_buffer->StrideU(),
+                     i420_buffer->MutableDataV(), i420_buffer->StrideV(),
+                     width(), height());
+  return i420_buffer;
+}
+
 }  // namespace
 
 WrappedI420Buffer::WrappedI420Buffer(int width,
@@ -257,4 +328,20 @@
   }
 }
 
+rtc::scoped_refptr<I010BufferInterface> WrapI010Buffer(
+    int width,
+    int height,
+    const uint16_t* y_plane,
+    int y_stride,
+    const uint16_t* u_plane,
+    int u_stride,
+    const uint16_t* v_plane,
+    int v_stride,
+    const rtc::Callback0<void>& no_longer_used) {
+  return rtc::scoped_refptr<I010BufferInterface>(
+      new rtc::RefCountedObject<WrappedYuv16BBuffer<I010BufferBase>>(
+          width, height, y_plane, y_stride, u_plane, u_stride, v_plane,
+          v_stride, no_longer_used));
+}
+
 }  // namespace webrtc
diff --git a/common_video/video_frame_unittest.cc b/common_video/video_frame_unittest.cc
new file mode 100644
index 0000000..a4b110b
--- /dev/null
+++ b/common_video/video_frame_unittest.cc
@@ -0,0 +1,435 @@
+/*
+ *  Copyright (c) 2018 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 <math.h>
+#include <string.h>
+
+#include "api/video/i010_buffer.h"
+#include "api/video/i420_buffer.h"
+#include "api/video/video_frame.h"
+#include "rtc_base/bind.h"
+#include "rtc_base/timeutils.h"
+#include "test/fake_texture_frame.h"
+#include "test/frame_utils.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+
+namespace {
+
+// Helper class to delegate calls to appropriate container.
+class PlanarYuvBufferFactory {
+ public:
+  static rtc::scoped_refptr<PlanarYuvBuffer> Create(VideoFrameBuffer::Type type,
+                                                    int width,
+                                                    int height) {
+    switch (type) {
+      case VideoFrameBuffer::Type::kI420:
+        return I420Buffer::Create(width, height);
+      case VideoFrameBuffer::Type::kI010:
+        return I010Buffer::Create(width, height);
+      default:
+        RTC_NOTREACHED();
+    }
+    return nullptr;
+  }
+
+  static rtc::scoped_refptr<PlanarYuvBuffer> Copy(const VideoFrameBuffer& src) {
+    switch (src.type()) {
+      case VideoFrameBuffer::Type::kI420:
+        return I420Buffer::Copy(src);
+      case VideoFrameBuffer::Type::kI010:
+        return I010Buffer::Copy(*src.GetI010());
+      default:
+        RTC_NOTREACHED();
+    }
+    return nullptr;
+  }
+
+  static rtc::scoped_refptr<PlanarYuvBuffer> Rotate(const VideoFrameBuffer& src,
+                                                    VideoRotation rotation) {
+    switch (src.type()) {
+      case VideoFrameBuffer::Type::kI420:
+        return I420Buffer::Rotate(src, rotation);
+      case VideoFrameBuffer::Type::kI010:
+        return I010Buffer::Rotate(*src.GetI010(), rotation);
+      default:
+        RTC_NOTREACHED();
+    }
+    return nullptr;
+  }
+
+  static rtc::scoped_refptr<PlanarYuvBuffer> CropAndScaleFrom(
+      const VideoFrameBuffer& src,
+      int offset_x,
+      int offset_y,
+      int crop_width,
+      int crop_height) {
+    switch (src.type()) {
+      case VideoFrameBuffer::Type::kI420: {
+        rtc::scoped_refptr<I420Buffer> buffer =
+            I420Buffer::Create(crop_width, crop_height);
+        buffer->CropAndScaleFrom(*src.GetI420(), offset_x, offset_y, crop_width,
+                                 crop_height);
+        return buffer;
+      }
+      case VideoFrameBuffer::Type::kI010: {
+        rtc::scoped_refptr<I010Buffer> buffer =
+            I010Buffer::Create(crop_width, crop_height);
+        buffer->CropAndScaleFrom(*src.GetI010(), offset_x, offset_y, crop_width,
+                                 crop_height);
+        return buffer;
+      }
+      default:
+        RTC_NOTREACHED();
+    }
+    return nullptr;
+  }
+
+  static rtc::scoped_refptr<PlanarYuvBuffer> CropAndScaleFrom(
+      const VideoFrameBuffer& src,
+      int crop_width,
+      int crop_height) {
+    const int out_width =
+        std::min(src.width(), crop_width * src.height() / crop_height);
+    const int out_height =
+        std::min(src.height(), crop_height * src.width() / crop_width);
+    return CropAndScaleFrom(src, (src.width() - out_width) / 2,
+                            (src.height() - out_height) / 2, out_width,
+                            out_height);
+  }
+
+  static rtc::scoped_refptr<PlanarYuvBuffer>
+  ScaleFrom(const VideoFrameBuffer& src, int crop_width, int crop_height) {
+    switch (src.type()) {
+      case VideoFrameBuffer::Type::kI420: {
+        rtc::scoped_refptr<I420Buffer> buffer =
+            I420Buffer::Create(crop_width, crop_height);
+        buffer->ScaleFrom(*src.GetI420());
+        return buffer;
+      }
+      case VideoFrameBuffer::Type::kI010: {
+        rtc::scoped_refptr<I010Buffer> buffer =
+            I010Buffer::Create(crop_width, crop_height);
+        buffer->ScaleFrom(*src.GetI010());
+        return buffer;
+      }
+      default:
+        RTC_NOTREACHED();
+    }
+    return nullptr;
+  }
+};
+
+rtc::scoped_refptr<PlanarYuvBuffer> CreateGradient(VideoFrameBuffer::Type type,
+                                                   int width,
+                                                   int height) {
+  rtc::scoped_refptr<I420Buffer> buffer(I420Buffer::Create(width, height));
+  // Initialize with gradient, Y = 128(x/w + y/h), U = 256 x/w, V = 256 y/h
+  for (int x = 0; x < width; x++) {
+    for (int y = 0; y < height; y++) {
+      buffer->MutableDataY()[x + y * width] =
+          128 * (x * height + y * width) / (width * height);
+    }
+  }
+  int chroma_width = buffer->ChromaWidth();
+  int chroma_height = buffer->ChromaHeight();
+  for (int x = 0; x < chroma_width; x++) {
+    for (int y = 0; y < chroma_height; y++) {
+      buffer->MutableDataU()[x + y * chroma_width] =
+          255 * x / (chroma_width - 1);
+      buffer->MutableDataV()[x + y * chroma_width] =
+          255 * y / (chroma_height - 1);
+    }
+  }
+  if (type == VideoFrameBuffer::Type::kI420)
+    return buffer;
+
+  RTC_DCHECK(type == VideoFrameBuffer::Type::kI010);
+  return I010Buffer::Copy(*buffer);
+}
+
+// The offsets and sizes describe the rectangle extracted from the
+// original (gradient) frame, in relative coordinates where the
+// original frame correspond to the unit square, 0.0 <= x, y < 1.0.
+void CheckCrop(const webrtc::I420BufferInterface& frame,
+               double offset_x,
+               double offset_y,
+               double rel_width,
+               double rel_height) {
+  int width = frame.width();
+  int height = frame.height();
+  // Check that pixel values in the corners match the gradient used
+  // for initialization.
+  for (int i = 0; i < 2; i++) {
+    for (int j = 0; j < 2; j++) {
+      // Pixel coordinates of the corner.
+      int x = i * (width - 1);
+      int y = j * (height - 1);
+      // Relative coordinates, range 0.0 - 1.0 correspond to the
+      // size of the uncropped input frame.
+      double orig_x = offset_x + i * rel_width;
+      double orig_y = offset_y + j * rel_height;
+
+      EXPECT_NEAR(frame.DataY()[x + y * frame.StrideY()] / 256.0,
+                  (orig_x + orig_y) / 2, 0.02);
+      EXPECT_NEAR(frame.DataU()[x / 2 + (y / 2) * frame.StrideU()] / 256.0,
+                  orig_x, 0.02);
+      EXPECT_NEAR(frame.DataV()[x / 2 + (y / 2) * frame.StrideV()] / 256.0,
+                  orig_y, 0.02);
+    }
+  }
+}
+
+void CheckRotate(int width,
+                 int height,
+                 webrtc::VideoRotation rotation,
+                 const webrtc::I420BufferInterface& rotated) {
+  int rotated_width = width;
+  int rotated_height = height;
+
+  if (rotation == kVideoRotation_90 || rotation == kVideoRotation_270) {
+    std::swap(rotated_width, rotated_height);
+  }
+  EXPECT_EQ(rotated_width, rotated.width());
+  EXPECT_EQ(rotated_height, rotated.height());
+
+  // Clock-wise order (with 0,0 at top-left)
+  const struct {
+    int x;
+    int y;
+  } corners[] = {{0, 0}, {1, 0}, {1, 1}, {0, 1}};
+  // Corresponding corner colors of the frame produced by CreateGradient.
+  const struct {
+    int y;
+    int u;
+    int v;
+  } colors[] = {{0, 0, 0}, {127, 255, 0}, {255, 255, 255}, {127, 0, 255}};
+  int corner_offset = static_cast<int>(rotation) / 90;
+
+  for (int i = 0; i < 4; i++) {
+    int j = (i + corner_offset) % 4;
+    int x = corners[j].x * (rotated_width - 1);
+    int y = corners[j].y * (rotated_height - 1);
+    EXPECT_EQ(colors[i].y, rotated.DataY()[x + y * rotated.StrideY()]);
+    EXPECT_EQ(colors[i].u,
+              rotated.DataU()[(x / 2) + (y / 2) * rotated.StrideU()]);
+    EXPECT_EQ(colors[i].v,
+              rotated.DataV()[(x / 2) + (y / 2) * rotated.StrideV()]);
+  }
+}
+
+}  // namespace
+
+TEST(TestVideoFrame, WidthHeightValues) {
+  VideoFrame frame(I420Buffer::Create(10, 10, 10, 14, 90),
+                   webrtc::kVideoRotation_0,
+                   789 * rtc::kNumMicrosecsPerMillisec);
+  const int valid_value = 10;
+  EXPECT_EQ(valid_value, frame.width());
+  EXPECT_EQ(valid_value, frame.height());
+  frame.set_timestamp(123u);
+  EXPECT_EQ(123u, frame.timestamp());
+  frame.set_ntp_time_ms(456);
+  EXPECT_EQ(456, frame.ntp_time_ms());
+  EXPECT_EQ(789, frame.render_time_ms());
+}
+
+TEST(TestVideoFrame, ShallowCopy) {
+  uint32_t timestamp = 1;
+  int64_t ntp_time_ms = 2;
+  int64_t timestamp_us = 3;
+  int stride_y = 15;
+  int stride_u = 10;
+  int stride_v = 10;
+  int width = 15;
+  int height = 15;
+
+  const int kSizeY = 400;
+  const int kSizeU = 100;
+  const int kSizeV = 100;
+  const VideoRotation kRotation = kVideoRotation_270;
+  uint8_t buffer_y[kSizeY];
+  uint8_t buffer_u[kSizeU];
+  uint8_t buffer_v[kSizeV];
+  memset(buffer_y, 16, kSizeY);
+  memset(buffer_u, 8, kSizeU);
+  memset(buffer_v, 4, kSizeV);
+
+  VideoFrame frame1(I420Buffer::Copy(width, height, buffer_y, stride_y,
+                                     buffer_u, stride_u, buffer_v, stride_v),
+                    kRotation, 0);
+  frame1.set_timestamp(timestamp);
+  frame1.set_ntp_time_ms(ntp_time_ms);
+  frame1.set_timestamp_us(timestamp_us);
+  VideoFrame frame2(frame1);
+
+  EXPECT_EQ(frame1.video_frame_buffer(), frame2.video_frame_buffer());
+  rtc::scoped_refptr<I420BufferInterface> yuv1 =
+      frame1.video_frame_buffer()->GetI420();
+  rtc::scoped_refptr<I420BufferInterface> yuv2 =
+      frame2.video_frame_buffer()->GetI420();
+  EXPECT_EQ(yuv1->DataY(), yuv2->DataY());
+  EXPECT_EQ(yuv1->DataU(), yuv2->DataU());
+  EXPECT_EQ(yuv1->DataV(), yuv2->DataV());
+
+  EXPECT_EQ(frame2.timestamp(), frame1.timestamp());
+  EXPECT_EQ(frame2.ntp_time_ms(), frame1.ntp_time_ms());
+  EXPECT_EQ(frame2.timestamp_us(), frame1.timestamp_us());
+  EXPECT_EQ(frame2.rotation(), frame1.rotation());
+
+  frame2.set_timestamp(timestamp + 1);
+  frame2.set_ntp_time_ms(ntp_time_ms + 1);
+  frame2.set_timestamp_us(timestamp_us + 1);
+  frame2.set_rotation(kVideoRotation_90);
+
+  EXPECT_NE(frame2.timestamp(), frame1.timestamp());
+  EXPECT_NE(frame2.ntp_time_ms(), frame1.ntp_time_ms());
+  EXPECT_NE(frame2.timestamp_us(), frame1.timestamp_us());
+  EXPECT_NE(frame2.rotation(), frame1.rotation());
+}
+
+TEST(TestVideoFrame, TextureInitialValues) {
+  VideoFrame frame = test::FakeNativeBuffer::CreateFrame(
+      640, 480, 100, 10, webrtc::kVideoRotation_0);
+  EXPECT_EQ(640, frame.width());
+  EXPECT_EQ(480, frame.height());
+  EXPECT_EQ(100u, frame.timestamp());
+  EXPECT_EQ(10, frame.render_time_ms());
+  ASSERT_TRUE(frame.video_frame_buffer() != nullptr);
+  EXPECT_TRUE(frame.video_frame_buffer()->type() ==
+              VideoFrameBuffer::Type::kNative);
+
+  frame.set_timestamp(200);
+  EXPECT_EQ(200u, frame.timestamp());
+  frame.set_timestamp_us(20);
+  EXPECT_EQ(20, frame.timestamp_us());
+}
+
+class TestPlanarYuvBuffer
+    : public ::testing::TestWithParam<VideoFrameBuffer::Type> {};
+
+rtc::scoped_refptr<I420Buffer> CreateAndFillBuffer() {
+  auto buf = I420Buffer::Create(20, 10);
+  memset(buf->MutableDataY(), 1, 200);
+  memset(buf->MutableDataU(), 2, 50);
+  memset(buf->MutableDataV(), 3, 50);
+  return buf;
+}
+
+TEST_P(TestPlanarYuvBuffer, Copy) {
+  rtc::scoped_refptr<PlanarYuvBuffer> buf1;
+  switch (GetParam()) {
+    case VideoFrameBuffer::Type::kI420: {
+      buf1 = CreateAndFillBuffer();
+      break;
+    }
+    case VideoFrameBuffer::Type::kI010: {
+      buf1 = I010Buffer::Copy(*CreateAndFillBuffer());
+      break;
+    }
+    default:
+      RTC_NOTREACHED();
+  }
+
+  rtc::scoped_refptr<PlanarYuvBuffer> buf2 =
+      PlanarYuvBufferFactory::Copy(*buf1);
+  EXPECT_TRUE(test::FrameBufsEqual(buf1->ToI420(), buf2->ToI420()));
+}
+
+TEST_P(TestPlanarYuvBuffer, Scale) {
+  rtc::scoped_refptr<PlanarYuvBuffer> buf =
+      CreateGradient(GetParam(), 200, 100);
+
+  // Pure scaling, no cropping.
+  rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
+      PlanarYuvBufferFactory::ScaleFrom(*buf, 150, 75);
+  CheckCrop(*scaled_buffer->ToI420(), 0.0, 0.0, 1.0, 1.0);
+}
+
+TEST_P(TestPlanarYuvBuffer, CropXCenter) {
+  rtc::scoped_refptr<PlanarYuvBuffer> buf =
+      CreateGradient(GetParam(), 200, 100);
+
+  // Pure center cropping, no scaling.
+  rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
+      PlanarYuvBufferFactory::CropAndScaleFrom(*buf, 50, 0, 100, 100);
+  CheckCrop(*scaled_buffer->ToI420(), 0.25, 0.0, 0.5, 1.0);
+}
+
+TEST_P(TestPlanarYuvBuffer, CropXNotCenter) {
+  rtc::scoped_refptr<PlanarYuvBuffer> buf =
+      CreateGradient(GetParam(), 200, 100);
+
+  // Non-center cropping, no scaling.
+  rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
+      PlanarYuvBufferFactory::CropAndScaleFrom(*buf, 25, 0, 100, 100);
+  CheckCrop(*scaled_buffer->ToI420(), 0.125, 0.0, 0.5, 1.0);
+}
+
+TEST_P(TestPlanarYuvBuffer, CropYCenter) {
+  rtc::scoped_refptr<PlanarYuvBuffer> buf =
+      CreateGradient(GetParam(), 100, 200);
+
+  // Pure center cropping, no scaling.
+  rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
+      PlanarYuvBufferFactory::CropAndScaleFrom(*buf, 0, 50, 100, 100);
+  CheckCrop(*scaled_buffer->ToI420(), 0.0, 0.25, 1.0, 0.5);
+}
+
+TEST_P(TestPlanarYuvBuffer, CropYNotCenter) {
+  rtc::scoped_refptr<PlanarYuvBuffer> buf =
+      CreateGradient(GetParam(), 100, 200);
+
+  // Pure center cropping, no scaling.
+  rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
+      PlanarYuvBufferFactory::CropAndScaleFrom(*buf, 0, 25, 100, 100);
+  CheckCrop(*scaled_buffer->ToI420(), 0.0, 0.125, 1.0, 0.5);
+}
+
+TEST_P(TestPlanarYuvBuffer, CropAndScale16x9) {
+  rtc::scoped_refptr<PlanarYuvBuffer> buf =
+      CreateGradient(GetParam(), 640, 480);
+
+  // Pure center cropping, no scaling.
+  rtc::scoped_refptr<PlanarYuvBuffer> scaled_buffer =
+      PlanarYuvBufferFactory::CropAndScaleFrom(*buf, 320, 180);
+  CheckCrop(*scaled_buffer->ToI420(), 0.0, 0.125, 1.0, 0.75);
+}
+
+INSTANTIATE_TEST_CASE_P(,
+                        TestPlanarYuvBuffer,
+                        ::testing::Values(VideoFrameBuffer::Type::kI420,
+                                          VideoFrameBuffer::Type::kI010));
+
+class TestPlanarYuvBufferRotate
+    : public ::testing::TestWithParam<
+          std::tuple<webrtc::VideoRotation, VideoFrameBuffer::Type>> {};
+
+TEST_P(TestPlanarYuvBufferRotate, Rotates) {
+  const webrtc::VideoRotation rotation = std::get<0>(GetParam());
+  const VideoFrameBuffer::Type type = std::get<1>(GetParam());
+  rtc::scoped_refptr<PlanarYuvBuffer> buffer = CreateGradient(type, 640, 480);
+  rtc::scoped_refptr<PlanarYuvBuffer> rotated_buffer =
+      PlanarYuvBufferFactory::Rotate(*buffer, rotation);
+  CheckRotate(640, 480, rotation, *rotated_buffer->ToI420());
+}
+
+INSTANTIATE_TEST_CASE_P(
+    Rotate,
+    TestPlanarYuvBufferRotate,
+    ::testing::Combine(::testing::Values(kVideoRotation_0,
+                                         kVideoRotation_90,
+                                         kVideoRotation_180,
+                                         kVideoRotation_270),
+                       ::testing::Values(VideoFrameBuffer::Type::kI420,
+                                         VideoFrameBuffer::Type::kI010)));
+
+}  // namespace webrtc