/*
|
* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
|
*
|
* Use of this source code is governed by a BSD-style license
|
* that can be found in the LICENSE file in the root of the source
|
* tree. An additional intellectual property rights grant can be found
|
* in the file PATENTS. All contributing project authors may
|
* be found in the AUTHORS file in the root of the source tree.
|
*/
|
|
#include "webrtc/modules/desktop_capture/desktop_and_cursor_composer.h"
|
|
#include "testing/gtest/include/gtest/gtest.h"
|
#include "webrtc/base/scoped_ptr.h"
|
#include "webrtc/modules/desktop_capture/desktop_capture_options.h"
|
#include "webrtc/modules/desktop_capture/desktop_frame.h"
|
#include "webrtc/modules/desktop_capture/mouse_cursor.h"
|
#include "webrtc/modules/desktop_capture/shared_desktop_frame.h"
|
#include "webrtc/modules/desktop_capture/window_capturer.h"
|
#include "webrtc/system_wrappers/include/logging.h"
|
|
namespace webrtc {
|
|
namespace {
|
|
const int kScreenWidth = 100;
|
const int kScreenHeight = 100;
|
const int kCursorWidth = 10;
|
const int kCursorHeight = 10;
|
|
const int kTestCursorSize = 3;
|
const uint32_t kTestCursorData[kTestCursorSize][kTestCursorSize] = {
|
{ 0xffffffff, 0x99990000, 0xaa222222, },
|
{ 0x88008800, 0xaa0000aa, 0xaa333333, },
|
{ 0x00000000, 0xaa0000aa, 0xaa333333, },
|
};
|
|
uint32_t GetFakeFramePixelValue(const DesktopVector& p) {
|
uint32_t r = 100 + p.x();
|
uint32_t g = 100 + p.y();
|
uint32_t b = 100 + p.x() + p.y();
|
return b + (g << 8) + (r << 16) + 0xff000000;
|
}
|
|
uint32_t GetFramePixel(const DesktopFrame& frame, const DesktopVector& pos) {
|
return *reinterpret_cast<uint32_t*>(frame.data() + pos.y() * frame.stride() +
|
pos.x() * DesktopFrame::kBytesPerPixel);
|
}
|
|
// Blends two pixel values taking into account alpha.
|
uint32_t BlendPixels(uint32_t dest, uint32_t src) {
|
uint8_t alpha = 255 - ((src & 0xff000000) >> 24);
|
uint32_t r =
|
((dest & 0x00ff0000) >> 16) * alpha / 255 + ((src & 0x00ff0000) >> 16);
|
uint32_t g =
|
((dest & 0x0000ff00) >> 8) * alpha / 255 + ((src & 0x0000ff00) >> 8);
|
uint32_t b = (dest & 0x000000ff) * alpha / 255 + (src & 0x000000ff);
|
return b + (g << 8) + (r << 16) + 0xff000000;
|
}
|
|
DesktopFrame* CreateTestFrame() {
|
DesktopFrame* frame =
|
new BasicDesktopFrame(DesktopSize(kScreenWidth, kScreenHeight));
|
uint32_t* data = reinterpret_cast<uint32_t*>(frame->data());
|
for (int y = 0; y < kScreenHeight; ++y) {
|
for (int x = 0; x < kScreenWidth; ++x) {
|
*(data++) = GetFakeFramePixelValue(DesktopVector(x, y));
|
}
|
}
|
return frame;
|
}
|
|
class FakeScreenCapturer : public DesktopCapturer {
|
public:
|
FakeScreenCapturer() {}
|
|
void Start(Callback* callback) override { callback_ = callback; }
|
|
void Capture(const DesktopRegion& region) override {
|
callback_->OnCaptureCompleted(next_frame_.release());
|
}
|
|
void SetNextFrame(DesktopFrame* next_frame) {
|
next_frame_.reset(next_frame);
|
}
|
|
private:
|
Callback* callback_;
|
|
rtc::scoped_ptr<DesktopFrame> next_frame_;
|
};
|
|
class FakeMouseMonitor : public MouseCursorMonitor {
|
public:
|
FakeMouseMonitor() : changed_(true) {}
|
|
void SetState(CursorState state, const DesktopVector& pos) {
|
state_ = state;
|
position_ = pos;
|
}
|
|
void SetHotspot(const DesktopVector& hotspot) {
|
if (!hotspot_.equals(hotspot))
|
changed_ = true;
|
hotspot_ = hotspot;
|
}
|
|
void Init(Callback* callback, Mode mode) override { callback_ = callback; }
|
|
void Capture() override {
|
if (changed_) {
|
rtc::scoped_ptr<DesktopFrame> image(
|
new BasicDesktopFrame(DesktopSize(kCursorWidth, kCursorHeight)));
|
uint32_t* data = reinterpret_cast<uint32_t*>(image->data());
|
memset(data, 0, image->stride() * kCursorHeight);
|
|
// Set four pixels near the hotspot and leave all other blank.
|
for (int y = 0; y < kTestCursorSize; ++y) {
|
for (int x = 0; x < kTestCursorSize; ++x) {
|
data[(hotspot_.y() + y) * kCursorWidth + (hotspot_.x() + x)] =
|
kTestCursorData[y][x];
|
}
|
}
|
|
callback_->OnMouseCursor(new MouseCursor(image.release(), hotspot_));
|
}
|
|
callback_->OnMouseCursorPosition(state_, position_);
|
}
|
|
private:
|
Callback* callback_;
|
CursorState state_;
|
DesktopVector position_;
|
DesktopVector hotspot_;
|
bool changed_;
|
};
|
|
void VerifyFrame(const DesktopFrame& frame,
|
MouseCursorMonitor::CursorState state,
|
const DesktopVector& pos) {
|
// Verify that all other pixels are set to their original values.
|
DesktopRect image_rect =
|
DesktopRect::MakeWH(kTestCursorSize, kTestCursorSize);
|
image_rect.Translate(pos);
|
|
for (int y = 0; y < kScreenHeight; ++y) {
|
for (int x = 0; x < kScreenWidth; ++x) {
|
DesktopVector p(x, y);
|
if (state == MouseCursorMonitor::INSIDE && image_rect.Contains(p)) {
|
EXPECT_EQ(BlendPixels(GetFakeFramePixelValue(p),
|
kTestCursorData[y - pos.y()][x - pos.x()]),
|
GetFramePixel(frame, p));
|
} else {
|
EXPECT_EQ(GetFakeFramePixelValue(p), GetFramePixel(frame, p));
|
}
|
}
|
}
|
}
|
|
class DesktopAndCursorComposerTest : public testing::Test,
|
public DesktopCapturer::Callback {
|
public:
|
DesktopAndCursorComposerTest()
|
: fake_screen_(new FakeScreenCapturer()),
|
fake_cursor_(new FakeMouseMonitor()),
|
blender_(fake_screen_, fake_cursor_) {
|
}
|
|
// DesktopCapturer::Callback interface
|
SharedMemory* CreateSharedMemory(size_t size) override { return NULL; }
|
|
void OnCaptureCompleted(DesktopFrame* frame) override { frame_.reset(frame); }
|
|
protected:
|
// Owned by |blender_|.
|
FakeScreenCapturer* fake_screen_;
|
FakeMouseMonitor* fake_cursor_;
|
|
DesktopAndCursorComposer blender_;
|
rtc::scoped_ptr<DesktopFrame> frame_;
|
};
|
|
// Verify DesktopAndCursorComposer can handle the case when the screen capturer
|
// fails.
|
TEST_F(DesktopAndCursorComposerTest, Error) {
|
blender_.Start(this);
|
|
fake_cursor_->SetHotspot(DesktopVector());
|
fake_cursor_->SetState(MouseCursorMonitor::INSIDE, DesktopVector());
|
fake_screen_->SetNextFrame(NULL);
|
|
blender_.Capture(DesktopRegion());
|
|
EXPECT_EQ(frame_, static_cast<DesktopFrame*>(NULL));
|
}
|
|
TEST_F(DesktopAndCursorComposerTest, Blend) {
|
struct {
|
int x, y;
|
int hotspot_x, hotspot_y;
|
bool inside;
|
} tests[] = {
|
{0, 0, 0, 0, true},
|
{50, 50, 0, 0, true},
|
{100, 50, 0, 0, true},
|
{50, 100, 0, 0, true},
|
{100, 100, 0, 0, true},
|
{0, 0, 2, 5, true},
|
{1, 1, 2, 5, true},
|
{50, 50, 2, 5, true},
|
{100, 100, 2, 5, true},
|
{0, 0, 5, 2, true},
|
{50, 50, 5, 2, true},
|
{100, 100, 5, 2, true},
|
{0, 0, 0, 0, false},
|
};
|
|
blender_.Start(this);
|
|
for (size_t i = 0; i < (sizeof(tests) / sizeof(tests[0])); ++i) {
|
SCOPED_TRACE(i);
|
|
DesktopVector hotspot(tests[i].hotspot_x, tests[i].hotspot_y);
|
fake_cursor_->SetHotspot(hotspot);
|
|
MouseCursorMonitor::CursorState state = tests[i].inside
|
? MouseCursorMonitor::INSIDE
|
: MouseCursorMonitor::OUTSIDE;
|
DesktopVector pos(tests[i].x, tests[i].y);
|
fake_cursor_->SetState(state, pos);
|
|
rtc::scoped_ptr<SharedDesktopFrame> frame(
|
SharedDesktopFrame::Wrap(CreateTestFrame()));
|
fake_screen_->SetNextFrame(frame->Share());
|
|
blender_.Capture(DesktopRegion());
|
|
VerifyFrame(*frame_, state, pos);
|
|
// Verify that the cursor is erased before the frame buffer is returned to
|
// the screen capturer.
|
frame_.reset();
|
VerifyFrame(*frame, MouseCursorMonitor::OUTSIDE, DesktopVector());
|
}
|
}
|
|
} // namespace
|
|
} // namespace webrtc
|
