cros: Support YUYV format for GPU memory buffer video frames

gpu/command_buffer/common/gpu_memory_buffer_support.cc

Index: gpu/command_buffer/common/gpu_memory_buffer_support.cc
diff --git a/gpu/command_buffer/common/gpu_memory_buffer_support.cc b/gpu/command_buffer/common/gpu_memory_buffer_support.cc
index 68237a08fd255e6ffc020f530493d662ffad0290..2b9d22ad3b0b699279fe4026163511904e837c0d 100644
--- a/gpu/command_buffer/common/gpu_memory_buffer_support.cc
+++ b/gpu/command_buffer/common/gpu_memory_buffer_support.cc
@@ -41,7 +41,13 @@ gfx::BufferFormat BufferFormatForInternalFormat(unsigned internalformat) {
     case GL_RGB_YCBCR_420V_CHROMIUM:
       return gfx::BufferFormat::YUV_420_BIPLANAR;
     case GL_RGB_YCBCR_422_CHROMIUM:
+#if defined(OS_MACOSX)
+      // Mac supports UYVY IOSurface.
       return gfx::BufferFormat::UYVY_422;
+#elif defined(OS_CHROMEOS)
+      // Mesa EGL supports not UYVY but YUYV image.

[marcheu1, 2017/01/21 00:25:18]

ditto

[dshwang, 2017/01/23 23:13:42]

Done.

+      return gfx::BufferFormat::YUYV_422;
+#endif
     default:
       NOTREACHED();
       return gfx::BufferFormat::RGBA_8888;
@@ -79,6 +85,7 @@ bool IsImageFormatCompatibleWithGpuMemoryBufferFormat(
     case gfx::BufferFormat::YVU_420:
     case gfx::BufferFormat::YUV_420_BIPLANAR:
     case gfx::BufferFormat::UYVY_422:
+    case gfx::BufferFormat::YUYV_422:
       return format == BufferFormatForInternalFormat(internalformat);
     case gfx::BufferFormat::BGR_565:
     case gfx::BufferFormat::RGBX_8888:
@@ -110,6 +117,7 @@ bool IsGpuMemoryBufferFormatSupported(gfx::BufferFormat format,
     case gfx::BufferFormat::RG_88:
       return capabilities.texture_rg;
     case gfx::BufferFormat::UYVY_422:
+    case gfx::BufferFormat::YUYV_422:
       return capabilities.image_ycbcr_422;
     case gfx::BufferFormat::BGR_565:
     case gfx::BufferFormat::RGBA_4444:
@@ -156,6 +164,7 @@ bool IsImageSizeValidForGpuMemoryBufferFormat(const gfx::Size& size,
       // 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:
+    case gfx::BufferFormat::YUYV_422:
       return size.width() % 2 == 0;
   }