[dxvavda] Mark NV12 textures as allowing overlays.

media/gpu/dxva_picture_buffer_win.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 "media/gpu/dxva_picture_buffer_win.h"
 
 #include "media/gpu/dxva_video_decode_accelerator_win.h"
 #include "third_party/angle/include/EGL/egl.h"
 #include "third_party/angle/include/EGL/eglext.h"
 #include "ui/gl/gl_bindings.h"
@@ skipping 352 matching lines @@
   }
 
   EGLDisplay egl_display = gl::GLSurfaceEGL::GetHardwareDisplay();
   eglBindTexImage(egl_display, decoding_surface_, EGL_BACK_BUFFER);
 
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
   glBindTexture(GL_TEXTURE_2D, current_texture);
   return true;
 }
 
+bool PbufferPictureBuffer::AllowOverlay() const {
+  return false;
+}
+
 PbufferPictureBuffer::PbufferPictureBuffer(const PictureBuffer& buffer)
     : DXVAPictureBuffer(buffer),
       decoding_surface_(NULL),
       texture_share_handle_(nullptr),
       keyed_mutex_value_(0),
       use_rgb_(true) {}
 
 PbufferPictureBuffer::~PbufferPictureBuffer() {
   // decoding_surface_ will be deleted by gl_image_.
 }
@@ skipping 118 matching lines @@
   result = eglStreamConsumerAcquireKHR(egl_display, stream_);
   RETURN_ON_FAILURE(result, "Could not post acquire stream", false);
   gl::GLImageDXGI* gl_image_dxgi =
       gl::GLImageDXGI::FromGLImage(gl_image_.get());
   DCHECK(gl_image_dxgi);
 
   gl_image_dxgi->SetTexture(dx11_decoding_texture_, subresource);
   return true;
 }
 
+bool EGLStreamPictureBuffer::AllowOverlay() const {
+  return true;
+}
+
 EGLStreamCopyPictureBuffer::EGLStreamCopyPictureBuffer(
     const PictureBuffer& buffer)
     : DXVAPictureBuffer(buffer), stream_(nullptr) {}
 
 EGLStreamCopyPictureBuffer::~EGLStreamCopyPictureBuffer() {
   // stream_ will be deleted by gl_image_.
 }
 
 bool EGLStreamCopyPictureBuffer::Initialize(
     const DXVAVideoDecodeAccelerator& decoder) {
@@ skipping 143 matching lines @@
   }
   state_ = UNUSED;
 
   if (stream_) {
     EGLBoolean result = eglStreamConsumerReleaseKHR(egl_display, stream_);
     RETURN_ON_FAILURE(result, "Could not release stream", false);
   }
   return true;
 }
 
+bool EGLStreamCopyPictureBuffer::AllowOverlay() const {
+  return true;
+}
+
 }  // namespace media