Add support for converting I420 software frames into NV12 hardware frames

gpu/command_buffer/service/image_factory.cc

 // Copyright 2014 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 "gpu/command_buffer/service/image_factory.h"
 
 #include "gpu/command_buffer/common/capabilities.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace gpu {
@@ skipping 59 matching lines @@
     case gfx::BufferFormat::BGRX_8888:
     case gfx::BufferFormat::DXT1:
     case gfx::BufferFormat::DXT5:
     case gfx::BufferFormat::ETC1:
     case gfx::BufferFormat::R_8:
     case gfx::BufferFormat::RGBA_8888:
     case gfx::BufferFormat::YUV_420:
       return format == DefaultBufferFormatForImageFormat(internalformat);
     case gfx::BufferFormat::RGBA_4444:
       return internalformat == GL_RGBA;
+    case gfx::BufferFormat::YUV_420_BIPLANAR:
+      return internalformat == GL_R8;
     case gfx::BufferFormat::UYVY_422:
       return internalformat == GL_RGB;
   }
 
   NOTREACHED();
   return false;
 }
 
 // static
 bool ImageFactory::IsGpuMemoryBufferFormatSupported(
@@ skipping 10 matching lines @@
     case gfx::BufferFormat::DXT5:
       return capabilities.texture_format_dxt5;
     case gfx::BufferFormat::ETC1:
       return capabilities.texture_format_etc1;
     case gfx::BufferFormat::R_8:
       return capabilities.texture_rg;
     case gfx::BufferFormat::RGBA_4444:
     case gfx::BufferFormat::RGBA_8888:
     case gfx::BufferFormat::BGRX_8888:
     case gfx::BufferFormat::YUV_420:
+    case gfx::BufferFormat::YUV_420_BIPLANAR:
     case gfx::BufferFormat::UYVY_422:
       return true;
   }
 
   NOTREACHED();
   return false;
 }
 
 // static
 bool ImageFactory::IsImageSizeValidForGpuMemoryBufferFormat(
     const gfx::Size& size,
     gfx::BufferFormat format) {
   switch (format) {
     case gfx::BufferFormat::ATC:
     case gfx::BufferFormat::ATCIA:
     case gfx::BufferFormat::DXT1:
     case gfx::BufferFormat::DXT5:
     case gfx::BufferFormat::ETC1:
       // Compressed images must have a width and height that's evenly divisible
       // by the block size.
       return size.width() % 4 == 0 && size.height() % 4 == 0;
     case gfx::BufferFormat::R_8:
     case gfx::BufferFormat::RGBA_4444:
     case gfx::BufferFormat::RGBA_8888:
     case gfx::BufferFormat::BGRA_8888:
     case gfx::BufferFormat::BGRX_8888:
       return true;
     case gfx::BufferFormat::YUV_420:
+    case gfx::BufferFormat::YUV_420_BIPLANAR:
       // U and V planes are subsampled by a factor of 2.
       return size.width() % 2 == 0 && size.height() % 2 == 0;
     case gfx::BufferFormat::UYVY_422:
       return size.width() % 2 == 0;
   }
 
   NOTREACHED();
   return false;
 }
 
 }  // namespace gpu