Add support for converting I420 software frames into NV12 hardware frames

components/view_manager/gles2/mojo_gpu_memory_buffer.cc

 // Copyright 2015 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 "components/view_manager/gles2/mojo_gpu_memory_buffer.h"
 
 #include "base/logging.h"
 #include "base/memory/shared_memory.h"
 #include "base/numerics/safe_conversions.h"
 #include "ui/gfx/buffer_format_util.h"
@@ skipping 14 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;
 }
 
 size_t StrideInBytes(size_t width, gfx::BufferFormat format, int plane) {
   switch (format) {
     case gfx::BufferFormat::ATCIA:
     case gfx::BufferFormat::DXT5:
       DCHECK_EQ(plane, 0);
@@ skipping 10 matching lines @@
     case gfx::BufferFormat::UYVY_422:
       DCHECK_EQ(plane, 0);
       return width * 2;
     case gfx::BufferFormat::RGBA_8888:
     case gfx::BufferFormat::BGRX_8888:
     case gfx::BufferFormat::BGRA_8888:
       DCHECK_EQ(plane, 0);
       return width * 4;
     case gfx::BufferFormat::YUV_420:
       return width / SubsamplingFactor(format, plane);
+    case gfx::BufferFormat::YUV_420_BIPLANAR:
+      return width;
   }
   NOTREACHED();
   return 0;
 }
 
 size_t BufferSizeInBytes(const gfx::Size& size, gfx::BufferFormat format) {
   size_t size_in_bytes = 0;
   int num_planes = static_cast<int>(gfx::NumberOfPlanesForBufferFormat(format));
   for (int i = 0; i < num_planes; ++i) {
     size_in_bytes += StrideInBytes(size.width(), format, i) *
@@ skipping 84 matching lines @@
   handle.type = gfx::SHARED_MEMORY_BUFFER;
   handle.handle = shared_memory_->handle();
   return handle;
 }
 
 ClientBuffer MojoGpuMemoryBufferImpl::AsClientBuffer() {
   return reinterpret_cast<ClientBuffer>(this);
 }
 
 }  // namespace gles2