media/gpu/v4l2: add VP8 accelerator supporting upstream UAPI

Add a new VP8 accelerator that supports the upstream UAPI for VP8.

This is just a port of the legacy VP8 accelerator to use the upstream
headers and request API. It has not been thoroughly tested yet.

Bug: 965375
Test: None yet.

Change-Id: Ib06b2cc39a32beefa7314ae03d9ea15f8abc90f6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1761883
Commit-Queue: Alexandre Courbot <acourbot@chromium.org>
Auto-Submit: Alexandre Courbot <acourbot@chromium.org>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693059}

media/gpu/v4l2/BUILD.gn

@@ -51,6 +51,8 @@ source_set("v4l2") {
     "v4l2_video_decode_accelerator.h",
     "v4l2_video_encode_accelerator.cc",
     "v4l2_video_encode_accelerator.h",
+    "v4l2_vp8_accelerator.cc",
+    "v4l2_vp8_accelerator.h",
     "v4l2_vp8_accelerator_legacy.cc",
     "v4l2_vp8_accelerator_legacy.h",
     "v4l2_vp9_accelerator.cc",

media/gpu/v4l2/v4l2_slice_video_decode_accelerator.cc

@@ -41,6 +41,7 @@
 #include "media/gpu/v4l2/v4l2_h264_accelerator_legacy.h"
 #include "media/gpu/v4l2/v4l2_image_processor.h"
 #include "media/gpu/v4l2/v4l2_vda_helpers.h"
+#include "media/gpu/v4l2/v4l2_vp8_accelerator.h"
 #include "media/gpu/v4l2/v4l2_vp8_accelerator_legacy.h"
 #include "media/gpu/v4l2/v4l2_vp9_accelerator.h"
 #include "ui/gl/gl_context.h"
@@ -287,8 +288,13 @@ bool V4L2SliceVideoDecodeAccelerator::Initialize(const Config& config,
     }
   } else if (video_profile_ >= VP8PROFILE_MIN &&
              video_profile_ <= VP8PROFILE_MAX) {
-    decoder_.reset(new VP8Decoder(
-        std::make_unique<V4L2LegacyVP8Accelerator>(this, device_.get())));
+    if (supports_requests_) {
+      decoder_.reset(new VP8Decoder(
+          std::make_unique<V4L2VP8Accelerator>(this, device_.get())));
+    } else {
+      decoder_.reset(new VP8Decoder(
+          std::make_unique<V4L2LegacyVP8Accelerator>(this, device_.get())));
+    }
   } else if (video_profile_ >= VP9PROFILE_MIN &&
              video_profile_ <= VP9PROFILE_MAX) {
     decoder_.reset(new VP9Decoder(

media/gpu/v4l2/v4l2_vp8_accelerator.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_V4L2_V4L2_VP8_ACCELERATOR_H_
+#define MEDIA_GPU_V4L2_V4L2_VP8_ACCELERATOR_H_
+
+#include <vector>
+
+#include "base/macros.h"
+#include "base/memory/scoped_refptr.h"
+#include "media/gpu/vp8_decoder.h"
+
+namespace media {
+
+class V4L2Device;
+class V4L2DecodeSurface;
+class V4L2DecodeSurfaceHandler;
+
+class V4L2VP8Accelerator : public VP8Decoder::VP8Accelerator {
+ public:
+  explicit V4L2VP8Accelerator(V4L2DecodeSurfaceHandler* surface_handler,
+                              V4L2Device* device);
+  ~V4L2VP8Accelerator() override;
+
+  // VP8Decoder::VP8Accelerator implementation.
+  scoped_refptr<VP8Picture> CreateVP8Picture() override;
+  bool SubmitDecode(scoped_refptr<VP8Picture> pic,
+                    const Vp8ReferenceFrameVector& reference_frames) override;
+  bool OutputPicture(const scoped_refptr<VP8Picture>& pic) override;
+
+ private:
+  scoped_refptr<V4L2DecodeSurface> VP8PictureToV4L2DecodeSurface(
+      const scoped_refptr<VP8Picture>& pic);
+
+  V4L2DecodeSurfaceHandler* const surface_handler_;
+  V4L2Device* const device_;
+
+  DISALLOW_COPY_AND_ASSIGN(V4L2VP8Accelerator);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_GPU_V4L2_V4L2_VP8_ACCELERATOR_H_