flow/surface_frame.cc

// Copyright 2013 The Flutter 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 "flutter/flow/surface_frame.h"

#include <limits>
#include <memory>
#include <utility>

#include "flutter/fml/logging.h"
#include "flutter/fml/trace_event.h"

#include "third_party/skia/include/core/SkSurface.h"
#include "third_party/skia/include/utils/SkNWayCanvas.h"

namespace flutter {

SurfaceFrame::SurfaceFrame(sk_sp<SkSurface> surface,
                           FramebufferInfo framebuffer_info,
                           const SubmitCallback& submit_callback,
                           SkISize frame_size,
                           std::unique_ptr<GLContextResult> context_result,
                           bool display_list_fallback)
    : surface_(std::move(surface)),
      framebuffer_info_(framebuffer_info),
      submit_callback_(submit_callback),
      context_result_(std::move(context_result)) {
  FML_DCHECK(submit_callback_);
  if (surface_) {
    adapter_.set_canvas(surface_->getCanvas());
    canvas_ = &adapter_;
  } else if (display_list_fallback) {
    FML_DCHECK(!frame_size.isEmpty());
#if IMPELLER_SUPPORTS_RENDERING
    aiks_canvas_ =
        std::make_shared<impeller::DlAiksCanvas>(SkRect::Make(frame_size));
    canvas_ = aiks_canvas_.get();
#else
    FML_DCHECK(false);
#endif  // IMPELLER_SUPPORTS_RENDERING
  }
}

bool SurfaceFrame::Submit() {
  TRACE_EVENT0("flutter", "SurfaceFrame::Submit");
  if (submitted_) {
    return false;
  }

  submitted_ = PerformSubmit();

  return submitted_;
}

bool SurfaceFrame::IsSubmitted() const {
  return submitted_;
}

DlCanvas* SurfaceFrame::Canvas() {
  return canvas_;
}

sk_sp<SkSurface> SurfaceFrame::SkiaSurface() const {
  return surface_;
}

bool SurfaceFrame::PerformSubmit() {
  if (submit_callback_ == nullptr) {
    return false;
  }

  if (submit_callback_(*this, Canvas())) {
    return true;
  }

  return false;
}

std::shared_ptr<const impeller::Picture> SurfaceFrame::GetImpellerPicture() {
#if IMPELLER_SUPPORTS_RENDERING
  return std::make_shared<impeller::Picture>(
      aiks_canvas_->EndRecordingAsPicture());
#else
  FML_DCHECK(false);
  return nullptr;
#endif  // IMPELLER_SUPPORTS_RENDERING
}

}  // namespace flutter