16 bit capture and GPU&CPU memory buffer support.

content/browser/renderer_host/media/gpu_memory_buffer_tracker.cc

 // Copyright 2016 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 "content/browser/renderer_host/media/gpu_memory_buffer_tracker.h"
 
 #include "base/memory/ptr_util.h"
 #include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
 #include "content/browser/renderer_host/media/gpu_memory_buffer_handle.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 11 matching lines @@
 
 bool GpuMemoryBufferTracker::Init(const gfx::Size& dimensions,
                                   media::VideoPixelFormat format,
                                   media::VideoPixelStorage storage_type,
                                   base::Lock* lock) {
   DVLOG(2) << "allocating GMB for " << dimensions.ToString();
   // BrowserGpuMemoryBufferManager::current() may not be accessed on IO
   // Thread.
   DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK(BrowserGpuMemoryBufferManager::current());
-  // This class is only expected to be called with I420 buffer requests at
-  // this point.
-  DCHECK_EQ(format, media::PIXEL_FORMAT_I420);
+  // This class is only expected to be called with I420 or Y16 buffer requests
+  // at this point.
+  DCHECK(media::PIXEL_FORMAT_I420 == format ||
+         media::PIXEL_FORMAT_Y16 == format);
   set_dimensions(dimensions);
   set_max_pixel_count(dimensions.GetArea());
   set_pixel_format(format);
   set_storage_type(storage_type);
   // |dimensions| can be 0x0 for trackers that do not require memory backing.
   if (dimensions.GetArea() == 0u)
     return true;
 
   base::AutoUnlock auto_unlock(*lock);
   const size_t num_planes = media::VideoFrame::NumPlanes(pixel_format());
@@ skipping 51 matching lines @@
     case gfx::IO_SURFACE_BUFFER:
     case gfx::OZONE_NATIVE_PIXMAP:
       *new_handle = current_gmb_handle;
       return true;
   }
   NOTREACHED();
   return true;
 }
 
 }  // namespace content