Adds D3D11VP9Picture for use in an Accelerator

It is basically a mimic of the h264 picture, and will be used in the
D3D11Vp9accelerator class, when that is ready. There also appear to be
two styles for accelerators to downcast, where vaapi & V4L2 use
as___Picture() methods to get a raw pointer, but D3D11 just uses static
casts. I think a future good cleanup is to get rid of the extra methods
and not rely on forward declarations.

Bug: 881922
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: I6a7cfbb81e230a7ea46ae3c3e27aebf52a559913
Reviewed-on: https://chromium-review.googlesource.com/1213871
Commit-Queue: Ted Meyer <tmathmeyer@chromium.org>
Reviewed-by: Frank Liberato <liberato@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589695}

media/gpu/BUILD.gn

@@ -266,6 +266,8 @@ component("gpu") {
       "windows/d3d11_video_decoder.h",
       "windows/d3d11_video_decoder_impl.cc",
       "windows/d3d11_video_decoder_impl.h",
+      "windows/d3d11_vp9_picture.cc",
+      "windows/d3d11_vp9_picture.h",
       "windows/dxva_picture_buffer_win.cc",
       "windows/dxva_picture_buffer_win.h",
       "windows/dxva_video_decode_accelerator_win.cc",
@@ -325,6 +327,8 @@ source_set("common") {
     "h264_decoder.h",
     "h264_dpb.cc",
     "h264_dpb.h",
+    "vp9_picture.cc",
+    "vp9_picture.h",
   ]
   if (use_v4l2_codec || use_vaapi) {
     sources += [
@@ -337,8 +341,6 @@ source_set("common") {
       "vp8_reference_frame_vector.h",
       "vp9_decoder.cc",
       "vp9_decoder.h",
-      "vp9_picture.cc",
-      "vp9_picture.h",
     ]
   }
 

media/gpu/vp9_picture.h

@@ -20,6 +20,7 @@ class VP9Picture : public CodecPicture {
  public:
   VP9Picture();
 
+  // TODO(tmathmeyer) remove these and just use static casts everywhere.
   virtual V4L2VP9Picture* AsV4L2VP9Picture();
   virtual VaapiVP9Picture* AsVaapiVP9Picture();
 

media/gpu/windows/d3d11_vp9_picture.cc

+// Copyright 2018 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/windows/d3d11_vp9_picture.h"
+
+namespace media {
+
+D3D11VP9Picture::D3D11VP9Picture(D3D11PictureBuffer* picture_buffer)
+    : picture_buffer_(picture_buffer), level_(picture_buffer_->level()) {
+  picture_buffer_->set_in_picture_use(true);
+}
+
+D3D11VP9Picture::~D3D11VP9Picture() {
+  picture_buffer_->set_in_picture_use(false);
+}
+
+}  // namespace media

media/gpu/windows/d3d11_vp9_picture.h

+// Copyright 2018 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.
+
+#ifndef MEDIA_GPU_WINDOWS_D3D11_VP9_PICTURE_H_
+#define MEDIA_GPU_WINDOWS_D3D11_VP9_PICTURE_H_
+
+#include "media/gpu/vp9_picture.h"
+
+#include "media/gpu/windows/d3d11_picture_buffer.h"
+
+namespace media {
+
+class D3D11PictureBuffer;
+
+class D3D11VP9Picture : public VP9Picture {
+ public:
+  explicit D3D11VP9Picture(D3D11PictureBuffer* picture_buffer);
+
+ protected:
+  ~D3D11VP9Picture() override;
+
+ private:
+  D3D11PictureBuffer* picture_buffer_;
+  size_t level_;
+};
+
+}  // namespace media
+
+#endif  // MEDIA_GPU_WINDOWS_D3D11_VP9_PICTURE_H_