Move MutableDataY{,U,V} methods to I420Buffer only.

webrtc/test/frame_generator.cc

Index: webrtc/test/frame_generator.cc
diff --git a/webrtc/test/frame_generator.cc b/webrtc/test/frame_generator.cc
index ed7e95a12679d2abc36da2e56a4e194206c7d198..f4689497833b727615fb61d49f892414c78c1074 100644
--- a/webrtc/test/frame_generator.cc
+++ b/webrtc/test/frame_generator.cc
@@ -25,36 +25,36 @@ namespace {
 
 class ChromaGenerator : public FrameGenerator {
  public:
-  ChromaGenerator(size_t width, size_t height)
-      : angle_(0.0), width_(width), height_(height) {
+  ChromaGenerator(size_t width, size_t height) : angle_(0.0) {
     assert(width > 0);
     assert(height > 0);
+    size_t half_width = (width + 1) / 2;
+    y_size_ = width * height;
+    uv_size_ = half_width * ((height + 1) / 2);
+
+    // Ensure stride == width.
+    buffer_ = I420Buffer::Create(width, height, width, half_width, half_width);
   }
 
   VideoFrame* NextFrame() override {
-    frame_.CreateEmptyFrame(static_cast<int>(width_),
-                            static_cast<int>(height_),
-                            static_cast<int>(width_),
-                            static_cast<int>((width_ + 1) / 2),
-                            static_cast<int>((width_ + 1) / 2));
     angle_ += 30.0;
     uint8_t u = fabs(sin(angle_)) * 0xFF;
     uint8_t v = fabs(cos(angle_)) * 0xFF;
 
-    memset(frame_.video_frame_buffer()->MutableDataY(), 0x80,
-           frame_.allocated_size(kYPlane));
-    memset(frame_.video_frame_buffer()->MutableDataU(), u,
-           frame_.allocated_size(kUPlane));
-    memset(frame_.video_frame_buffer()->MutableDataV(), v,
-           frame_.allocated_size(kVPlane));
-    return &frame_;
+    memset(buffer_->MutableDataY(), 0x80, y_size_);
+    memset(buffer_->MutableDataU(), u, uv_size_);
+    memset(buffer_->MutableDataV(), v, uv_size_);
+
+    frame_.reset(new VideoFrame(buffer_, 0, 0, webrtc::kVideoRotation_0));
+    return frame_.get();
   }
 
  private:
   double angle_;
-  size_t width_;
-  size_t height_;
-  VideoFrame frame_;
+  size_t y_size_;
+  size_t uv_size_;
+  rtc::scoped_refptr<I420Buffer> buffer_;
+  std::unique_ptr<VideoFrame> frame_;
 };
 
 class YuvFileGenerator : public FrameGenerator {
@@ -89,13 +89,9 @@ class YuvFileGenerator : public FrameGenerator {
     if (++current_display_count_ >= frame_display_count_)
       current_display_count_ = 0;
 
-    // If this is the last repeatition of this frame, it's OK to use the
-    // original instance, otherwise use a copy.
-    if (current_display_count_ == frame_display_count_)
-      return &last_read_frame_;
-
-    temp_frame_copy_.CopyFrame(last_read_frame_);
-    return &temp_frame_copy_;
+    temp_frame_.reset(
+        new VideoFrame(last_read_buffer_, 0, 0, webrtc::kVideoRotation_0));
+    return temp_frame_.get();
   }
 
   void ReadNextFrame() {
@@ -110,14 +106,13 @@ class YuvFileGenerator : public FrameGenerator {
       assert(bytes_read >= frame_size_);
     }
 
-    last_read_frame_.CreateEmptyFrame(
+    last_read_buffer_ = I420Buffer::Create(
         static_cast<int>(width_), static_cast<int>(height_),
         static_cast<int>(width_), static_cast<int>((width_ + 1) / 2),
         static_cast<int>((width_ + 1) / 2));
-
     ConvertToI420(kI420, frame_buffer_.get(), 0, 0, static_cast<int>(width_),
                   static_cast<int>(height_), 0, kVideoRotation_0,
-                  &last_read_frame_);
+                  last_read_buffer_);
   }
 
  private:
@@ -129,8 +124,8 @@ class YuvFileGenerator : public FrameGenerator {
   const std::unique_ptr<uint8_t[]> frame_buffer_;
   const int frame_display_count_;
   int current_display_count_;
-  VideoFrame last_read_frame_;
-  VideoFrame temp_frame_copy_;
+  rtc::scoped_refptr<I420Buffer> last_read_buffer_;
+  std::unique_ptr<VideoFrame> temp_frame_;
 };
 
 class ScrollingImageFrameGenerator : public FrameGenerator {