Add ContentVideoViewOverlay to AVDA.

media/gpu/content_video_view_overlay.cc

+// Copyright (c) 2017 The Chromium Authors. All rights reserved.

[watk, 2017/02/17 22:40:36]

no (c)

[liberato (no reviews please), 2017/03/07 21:30:25]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "media/gpu/content_video_view_overlay.h"
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "gpu/ipc/common/gpu_surface_lookup.h"
+
+namespace media {
+
+ContentVideoViewOverlay::ContentVideoViewOverlay(
+    AVDACodecAllocator* codec_allocator,
+    int surface_id,
+    const AndroidOverlay::Config& config)
+    : codec_allocator_(codec_allocator),
+      surface_id_(surface_id),
+      config_(config),
+      weak_factory_(this) {
+  if (codec_allocator_->AllocateSurface(this, surface_id_)) {
+    // We have the surface -- post a callback to our OnSurfaceAvailable.
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
+        FROM_HERE, base::Bind(&ContentVideoViewOverlay::OnSurfaceAvailable,
+                              weak_factory_.GetWeakPtr(), true));
+  }
+}
+
+ContentVideoViewOverlay::~ContentVideoViewOverlay() {
+  // Deallocate the surface.  It's okay if we don't own it.
+  codec_allocator_->DeallocateSurface(this, surface_id_);
+}
+
+void ContentVideoViewOverlay::ScheduleLayout(const gfx::Rect& rect) {
+  NOTIMPLEMENTED();
+}
+
+void ContentVideoViewOverlay::OnSurfaceAvailable(bool success) {
+  if (!success) {
+    // Notify that the surface won't be available.
+    // TODO(liberato): should we have a separate cb for this?

[watk, 2017/02/17 22:40:36]

Delete TODO? Or is it just for the code review?

[liberato (no reviews please), 2017/03/07 21:30:25]

for review.  on further thought, i think that we should have a separate one. 
the client can always bind it to the same thing as destroyed cb.

i'll do that.

+    config_.destroyed_cb.Run();
+    // |this| may be deleted.
+    return;
+  }
+
+  // Get the surface and notify our client.
+  SetJavaSurface(
+      gpu::GpuSurfaceLookup::GetInstance()->AcquireJavaSurface(surface_id_));
+  config_.ready_cb.Run();
+}
+
+void ContentVideoViewOverlay::OnSurfaceDestroyed() {
+  config_.destroyed_cb.Run();
+  // |this| may be deleted, or deletion might be posted elsewhere.
+}
+
+}  // namespace media