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// 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.h"
#include "gfx/rect.h"
namespace remoting {
static const int kWidth = 320;
static const int kHeight = 240;
static const int kBytesPerPixel = 4; // 32 bit RGB is 4 bytes per pixel.
static const int kMaxColorChannelValue = 255;
CapturerFake::CapturerFake()
: seed_(0) {
// Dimensions of screen.
width_ = kWidth;
height_ = kHeight;
pixel_format_ = PixelFormatRgb32;
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]);
}
}
CapturerFake::~CapturerFake() {
}
void CapturerFake::CaptureFullScreen(Task* done_task) {
dirty_rects_.clear();
GenerateImage();
dirty_rects_.push_back(gfx::Rect(width_, height_));
FinishCapture(done_task);
}
void CapturerFake::CaptureDirtyRects(Task* done_task) {
dirty_rects_.clear();
GenerateImage();
// TODO(garykac): Diff old/new images and generate |dirty_rects_|.
// Currently, this just marks the entire screen as dirty.
dirty_rects_.push_back(gfx::Rect(width_, height_));
FinishCapture(done_task);
}
void CapturerFake::CaptureRect(const gfx::Rect& rect, Task* done_task) {
dirty_rects_.clear();
GenerateImage();
dirty_rects_.push_back(rect);
FinishCapture(done_task);
}
void CapturerFake::GetData(const uint8* planes[]) const {
planes[0] = buffers_[current_buffer_].get();
planes[1] = planes[2] = NULL;
}
void CapturerFake::GetDataStride(int strides[]) const {
// Only the first plane has data.
strides[0] = bytes_per_row_;
strides[1] = strides[2] = 0;
}
void CapturerFake::GenerateImage() {
uint8* row = buffers_[current_buffer_].get();
for (int y = 0; y < height_; ++y) {
int offset = y % 3;
for (int x = 0; x < width_; ++x) {
row[x * kBytesPerPixel + offset] = seed_++;
seed_ &= kMaxColorChannelValue;
}
row += bytes_per_row_;
}
++seed_;
}
} // namespace remoting
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