mojo/cc/output_surface_mojo.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "mojo/cc/output_surface_mojo.h"
   6
   7 #include "base/bind.h"
   8 #include "cc/output/compositor_frame.h"
   9 #include "cc/output/output_surface_client.h"
  10 #include "mojo/converters/geometry/geometry_type_converters.h"
  11 #include "mojo/converters/surfaces/surfaces_type_converters.h"
  12
  13 namespace mojo {
  14
  15 OutputSurfaceMojo::OutputSurfaceMojo(
  16     OutputSurfaceMojoClient* client,
  17     const scoped_refptr<cc::ContextProvider>& context_provider,
  18     ScopedMessagePipeHandle surface_handle)
  19     : cc::OutputSurface(context_provider),
  20       output_surface_mojo_client_(client),
  21       surface_handle_(surface_handle.Pass()),
  22       id_namespace_(0u),
  23       local_id_(0u) {
  24   capabilities_.delegated_rendering = true;
  25   capabilities_.max_frames_pending = 1;
  26 }
  27
  28 OutputSurfaceMojo::~OutputSurfaceMojo() {
  29 }
  30
  31 void OutputSurfaceMojo::SetIdNamespace(uint32_t id_namespace) {
  32   id_namespace_ = id_namespace;
  33   if (local_id_) {
  34     cc::SurfaceId qualified_id(static_cast<uint64_t>(id_namespace_) << 32 |
  35                                local_id_);
  36     output_surface_mojo_client_->DidCreateSurface(qualified_id);
  37   }
  38 }
  39
  40 bool OutputSurfaceMojo::BindToClient(cc::OutputSurfaceClient* client) {
  41   surface_.Bind(InterfacePtrInfo<Surface>(surface_handle_.Pass(), 0u));
  42   surface_->GetIdNamespace(
  43       base::Bind(&OutputSurfaceMojo::SetIdNamespace, base::Unretained(this)));
  44   return cc::OutputSurface::BindToClient(client);
  45 }
  46
  47 void OutputSurfaceMojo::SwapBuffers(cc::CompositorFrame* frame) {
  48   gfx::Size frame_size =
  49       frame->delegated_frame_data->render_pass_list.back()->output_rect.size();
  50   if (frame_size != surface_size_) {
  51     if (local_id_ != 0u) {
  52       surface_->DestroySurface(local_id_);
  53     }
  54     local_id_++;
  55     surface_->CreateSurface(local_id_);
  56     if (id_namespace_) {
  57       cc::SurfaceId qualified_id(static_cast<uint64_t>(id_namespace_) << 32 |
  58                                  local_id_);
  59       output_surface_mojo_client_->DidCreateSurface(qualified_id);
  60     }
  61     surface_size_ = frame_size;
  62   }
  63
  64   surface_->SubmitFrame(local_id_, Frame::From(*frame), mojo::Closure());
  65
  66   client_->DidSwapBuffers();
  67   client_->DidSwapBuffersComplete();
  68 }
  69
  70 }  // namespace mojo