Add VideoFrame::CreateZeroInitializedFrame

media/base/video_frame_pool.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/base/video_frame_pool.h"
 
 #include <list>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
@@ skipping 45 matching lines @@
 scoped_refptr<VideoFrame> VideoFramePool::PoolImpl::CreateFrame(
     VideoPixelFormat format,
     const gfx::Size& coded_size,
     const gfx::Rect& visible_rect,
     const gfx::Size& natural_size,
     base::TimeDelta timestamp) {
   base::AutoLock auto_lock(lock_);
   DCHECK(!is_shutdown_);
 
   scoped_refptr<VideoFrame> frame;
-
   while (!frame.get() && !frames_.empty()) {
       scoped_refptr<VideoFrame> pool_frame = frames_.front();
       frames_.pop_front();
 
       if (pool_frame->format() == format &&
           pool_frame->coded_size() == coded_size &&
           pool_frame->visible_rect() == visible_rect &&
           pool_frame->natural_size() == natural_size) {
         frame = pool_frame;
         frame->set_timestamp(timestamp);
         break;
       }
   }
 
   if (!frame.get()) {
-    frame = VideoFrame::CreateFrame(format, coded_size, visible_rect,
-                                    natural_size, timestamp);
-
-    // Zero-initialize each plane of the buffer.
-    const size_t num_planes = VideoFrame::NumPlanes(frame->format());
-    for (size_t i = 0; i < num_planes; ++i) {
-      memset(frame->data(i),
-             0,
-             VideoFrame::PlaneSize(frame->format(),
-                                   i,
-                                   frame->coded_size()).GetArea());
-    }
+    frame = VideoFrame::CreateZeroInitializedFrame(
+        format, coded_size, visible_rect, natural_size, timestamp);
   }
 
   scoped_refptr<VideoFrame> wrapped_frame = VideoFrame::WrapVideoFrame(
       frame, frame->visible_rect(), frame->natural_size());
   wrapped_frame->AddDestructionObserver(
       base::Bind(&VideoFramePool::PoolImpl::FrameReleased, this, frame));
   return wrapped_frame;
 }
 
 void VideoFramePool::PoolImpl::Shutdown() {
@@ skipping 26 matching lines @@
     base::TimeDelta timestamp) {
   return pool_->CreateFrame(format, coded_size, visible_rect, natural_size,
                             timestamp);
 }
 
 size_t VideoFramePool::GetPoolSizeForTesting() const {
   return pool_->GetPoolSizeForTesting();
 }
 
 }  // namespace media