Add support for converting I420 software frames into NV12 hardware frames

content/common/gpu/client/gpu_memory_buffer_impl.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 "content/common/gpu/client/gpu_memory_buffer_impl.h"
 
 #include "base/logging.h"
 #include "base/numerics/safe_math.h"
 #include "content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.h"
 #include "ui/gfx/buffer_format_util.h"
@@ skipping 81 matching lines @@
     case gfx::BufferFormat::RGBA_8888:
     case gfx::BufferFormat::BGRX_8888:
     case gfx::BufferFormat::BGRA_8888:
     case gfx::BufferFormat::UYVY_422:
       return 1;
     case gfx::BufferFormat::YUV_420: {
       static size_t factor[] = {1, 2, 2};
       DCHECK_LT(static_cast<size_t>(plane), arraysize(factor));
       return factor[plane];
     }
+    case gfx::BufferFormat::YUV_420_BIPLANAR: {
+      static size_t factor[] = {1, 2};
+      DCHECK_LT(static_cast<size_t>(plane), arraysize(factor));
+      return factor[plane];
+    }
   }
   NOTREACHED();
   return 0;
 }
 
 // static
 bool GpuMemoryBufferImpl::RowSizeInBytes(size_t width,
                                          gfx::BufferFormat format,
                                          int plane,
                                          size_t* size_in_bytes) {
@@ skipping 28 matching lines @@
     case gfx::BufferFormat::BGRA_8888:
       checked_size *= 4;
       if (!checked_size.IsValid())
         return false;
       *size_in_bytes = checked_size.ValueOrDie();
       return true;
     case gfx::BufferFormat::YUV_420:
       DCHECK_EQ(width % 2, 0u);
       *size_in_bytes = width / SubsamplingFactor(format, plane);
       return true;
+    case gfx::BufferFormat::YUV_420_BIPLANAR:
+      DCHECK_EQ(width % 2, 0u);
+      *size_in_bytes = width;
+      return true;
   }
   NOTREACHED();
   return false;
 }
 
 // static
 bool GpuMemoryBufferImpl::BufferSizeInBytes(const gfx::Size& size,
                                             gfx::BufferFormat format,
                                             size_t* size_in_bytes) {
   base::CheckedNumeric<size_t> checked_size = 0;
@@ skipping 24 matching lines @@
 
 gfx::GpuMemoryBufferId GpuMemoryBufferImpl::GetId() const {
   return id_;
 }
 
 ClientBuffer GpuMemoryBufferImpl::AsClientBuffer() {
   return reinterpret_cast<ClientBuffer>(this);
 }
 
 }  // namespace content