Initial implementation of stream switching in AdaptiveDemuxer.

media/filters/video_renderer_base.cc

Index: media/filters/video_renderer_base.cc
diff --git a/media/filters/video_renderer_base.cc b/media/filters/video_renderer_base.cc
index 770594639b8de2748b1f12640615b1a636b6c598..f5ee0399f169916d6a3773b5e4a9b98f16d87116 100644
--- a/media/filters/video_renderer_base.cc
+++ b/media/filters/video_renderer_base.cc
@@ -315,6 +315,14 @@ void VideoRendererBase::ThreadMain() {
         timeout_frame = current_frame_;
         current_frame_ = frames_queue_ready_.front();
         frames_queue_ready_.pop_front();
+
+        if (current_frame_->width() != width_ ||
+            current_frame_->height() != height_) {

[Ami GONE FROM CHROMIUM, 2011/05/19 20:27:37]

I don't imagine we have any test coverage for the case of frame size changing
mid-stream.  Easy to add?

[acolwell GONE FROM CHROMIUM, 2011/05/20 01:26:37]

Removing the frame size changes for now. It was a quick hack and I didn't fully
explore the ramifications of changing the frame size mid-stream.

+          width_ = current_frame_->width();
+          height_ = current_frame_->height();
+          host()->SetVideoSize(width_, height_);
+        }
+
         new_frame_available = true;
       } else if (pending_paint_ && frames_queue_ready_.size() >= 2 &&
                  !frames_queue_ready_[1]->IsEndOfStream()) {