[Cast] Software encoder support for varying video frame sizes.

media/cast/test/linux_output_window.cc

Index: media/cast/test/linux_output_window.cc
diff --git a/media/cast/test/linux_output_window.cc b/media/cast/test/linux_output_window.cc
index 5a934aada4394cb8881729ead4159167c50c9eb2..486db98cc5f8f67d07b2d1a9100d3554f720738d 100644
--- a/media/cast/test/linux_output_window.cc
+++ b/media/cast/test/linux_output_window.cc
@@ -4,6 +4,8 @@
 
 #include "media/cast/test/linux_output_window.h"
 
+#include <algorithm>
+
 #include "base/logging.h"
 #include "media/base/video_frame.h"
 #include "third_party/libyuv/include/libyuv/convert.h"
@@ -118,18 +120,27 @@ void LinuxOutputWindow::CreateWindow(int x_pos,
 
 void LinuxOutputWindow::RenderFrame(
     const scoped_refptr<media::VideoFrame>& video_frame) {
-  CHECK_LE(video_frame->coded_size().width(), image_->width);
-  CHECK_LE(video_frame->coded_size().height(), image_->height);
-  libyuv::I420ToARGB(video_frame->data(VideoFrame::kYPlane),
-                     video_frame->stride(VideoFrame::kYPlane),
-                     video_frame->data(VideoFrame::kUPlane),
-                     video_frame->stride(VideoFrame::kUPlane),
-                     video_frame->data(VideoFrame::kVPlane),
-                     video_frame->stride(VideoFrame::kVPlane),
-                     reinterpret_cast<uint8_t*>(image_->data),
-                     image_->bytes_per_line,
-                     video_frame->coded_size().width(),
-                     video_frame->coded_size().height());
+  const gfx::Size damage_size(std::min(video_frame->visible_rect().width(),
+                                       image_->width),
+                              std::min(video_frame->visible_rect().height(),
+                                       image_->height));
+
+  if (damage_size.width() < image_->width ||
+      damage_size.height() < image_->height)
+    memset(image_->data, 0x00, image_->bytes_per_line * image_->height);
+
+  if (!damage_size.IsEmpty()) {
+    libyuv::I420ToARGB(video_frame->visible_data(VideoFrame::kYPlane),
+                       video_frame->stride(VideoFrame::kYPlane),
+                       video_frame->visible_data(VideoFrame::kUPlane),
+                       video_frame->stride(VideoFrame::kUPlane),
+                       video_frame->visible_data(VideoFrame::kVPlane),
+                       video_frame->stride(VideoFrame::kVPlane),
+                       reinterpret_cast<uint8_t*>(image_->data),
+                       image_->bytes_per_line,
+                       damage_size.width(),
+                       damage_size.height());
+  }
 
   // Place image in window.
   XShmPutImage(display_,
@@ -140,8 +151,8 @@ void LinuxOutputWindow::RenderFrame(
                0,
                0,
                0,
-               video_frame->coded_size().width(),
-               video_frame->coded_size().height(),
+               image_->width,
+               image_->height,
                true);
 
   // Very important for the image to update properly!