Copy the (early prototype of) remoting in Chrome into the public tree....

remoting/host/capturer_fake_ascii.cc

+// Copyright (c) 2010 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 "remoting/host/capturer_fake_ascii.h"
+
+#include "gfx/rect.h"
+
+namespace remoting {
+
+static const int kWidth = 32;
+static const int kHeight = 20;
+static const int kBytesPerPixel = 1;
+
+CapturerFakeAscii::CapturerFakeAscii() {
+  // Dimensions of screen.
+  width_ = kWidth;
+  height_ = kHeight;
+  pixel_format_ = chromotocol_pb::PixelFormatAscii;
+  bytes_per_pixel_ = kBytesPerPixel;
+  bytes_per_row_ = width_ * bytes_per_pixel_;
+
+  // Create memory for the buffers.
+  int buffer_size = height_ * bytes_per_row_;
+  for (int i = 0; i < kNumBuffers; i++) {
+    buffers_[i].reset(new uint8[buffer_size]);
+  }
+}
+
+CapturerFakeAscii::~CapturerFakeAscii() {
+}
+
+void CapturerFakeAscii::CaptureFullScreen(Task* done_task) {
+  dirty_rects_.clear();
+
+  GenerateImage();
+
+  // Return a single dirty rect that includes the entire screen.
+  dirty_rects_.push_back(gfx::Rect(width_, height_));
+
+  FinishCapture(done_task);
+}
+
+void CapturerFakeAscii::CaptureDirtyRects(Task* done_task) {
+  dirty_rects_.clear();
+
+  GenerateImage();
+  // TODO(garykac): Diff old/new screen.
+  // Currently, this just marks the entire screen as dirty.
+  dirty_rects_.push_back(gfx::Rect(width_, height_));
+
+  FinishCapture(done_task);
+}
+
+void CapturerFakeAscii::CaptureRect(const gfx::Rect& rect, Task* done_task) {
+  dirty_rects_.clear();
+
+  GenerateImage();
+  dirty_rects_.push_back(rect);
+
+  FinishCapture(done_task);
+}
+
+void CapturerFakeAscii::GetData(const uint8* planes[]) const {
+  planes[0] = buffers_[current_buffer_].get();
+  planes[1] = planes[2] = NULL;
+}
+
+void CapturerFakeAscii::GetDataStride(int strides[]) const {
+  // Only the first plane has data.
+  strides[0] = bytes_per_row_;
+  strides[1] = strides[2] = 0;
+}
+
+void CapturerFakeAscii::GenerateImage() {
+  for (int y = 0; y < height_; ++y) {
+    uint8* row = buffers_[current_buffer_].get() + bytes_per_row_ * y;
+    for (int x = 0; x < bytes_per_row_; ++x) {
+      if (y == 0 || x == 0 || x == (width_ - 1) || y == (height_ - 1)) {
+        row[x] = '*';
+      } else {
+        row[x] = ' ';
+      }
+    }
+  }
+}
+
+}  // namespace remoting