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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/client/x11_view.h"
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/Xrender.h>
#include <X11/extensions/Xcomposite.h>
#include "base/logging.h"
#include "base/task.h"
namespace remoting {
X11View::X11View()
: display_(NULL),
window_(0),
picture_(0) {
}
X11View::~X11View() {
DCHECK(!display_);
DCHECK(!window_);
}
bool X11View::Initialize() {
display_ = XOpenDisplay(NULL);
if (!display_) {
return false;
}
// Get properties of the screen.
int screen = DefaultScreen(display_);
int root_window = RootWindow(display_, screen);
// Creates the window.
window_ = XCreateSimpleWindow(display_, root_window, 1, 1, 640, 480, 0,
BlackPixel(display_, screen),
BlackPixel(display_, screen));
DCHECK(window_);
XStoreName(display_, window_, "X11 Remoting");
// Specifies what kind of messages we want to receive.
XSelectInput(display_,
window_,
ExposureMask
| KeyPressMask | KeyReleaseMask
| ButtonPressMask | ButtonReleaseMask
| PointerMotionMask);
XMapWindow(display_, window_);
return true;
}
void X11View::TearDown() {
if (display_ && window_) {
// Shutdown the window system.
XDestroyWindow(display_, window_);
XCloseDisplay(display_);
}
display_ = NULL;
window_ = 0;
}
void X11View::Paint() {
NOTIMPLEMENTED() << "Not sure if we need this call anymore.";
}
void X11View::PaintRect(media::VideoFrame* frame, const gfx::Rect& clip) {
// Don't bother attempting to paint if the display hasn't been set up.
if (!display_ || !window_ || !frame) {
return;
}
// If we have not initialized the render target then do it now.
if (!picture_)
InitPaintTarget();
// Upload the image to a pixmap. And then create a picture from the pixmap
// and composite the picture over the picture representing the window.
// Creates a XImage.
XImage image;
memset(&image, 0, sizeof(image));
image.width = frame->width();
image.height = frame->height();
image.depth = 32;
image.bits_per_pixel = 32;
image.format = ZPixmap;
image.byte_order = LSBFirst;
image.bitmap_unit = 8;
image.bitmap_bit_order = LSBFirst;
image.bytes_per_line = frame_->stride(media::VideoFrame::kRGBPlane);
image.red_mask = 0xff;
image.green_mask = 0xff00;
image.blue_mask = 0xff0000;
image.data = reinterpret_cast<char*>(
frame_->data(media::VideoFrame::kRGBPlane));
// Creates a pixmap and uploads from the XImage.
unsigned long pixmap = XCreatePixmap(display_, window_,
frame->width(), frame->height(), 32);
GC gc = XCreateGC(display_, pixmap, 0, NULL);
XPutImage(display_, pixmap, gc, &image, clip.x(), clip.y(),
clip.x(), clip.y(), clip.width(), clip.height());
XFreeGC(display_, gc);
// Creates the picture representing the pixmap.
XID picture = XRenderCreatePicture(
display_, pixmap,
XRenderFindStandardFormat(display_, PictStandardARGB32),
0, NULL);
// Composite the picture over the picture representing the window.
XRenderComposite(display_, PictOpSrc, picture, 0,
picture_, 0, 0, 0, 0, clip.x(), clip.y(),
clip.width(), clip.height());
XRenderFreePicture(display_, picture);
XFreePixmap(display_, pixmap);
}
void X11View::SetSolidFill(uint32 color) {
// TODO(garykac): Implement.
// NOTIMPLEMENTED();
}
void X11View::UnsetSolidFill() {
// TODO(garykac): Implement.
// NOTIMPLEMENTED();
}
void X11View::SetConnectionState(ConnectionState s) {
// TODO(garykac): Implement.
}
void X11View::UpdateLoginStatus(bool success, const std::string& info) {
NOTIMPLEMENTED();
}
void X11View::SetViewport(int x, int y, int width, int height) {
// TODO(garykac): Implement.
}
void X11View::InitPaintTarget() {
// Testing XRender support.
int dummy;
bool xrender_support = XRenderQueryExtension(display_, &dummy, &dummy);
CHECK(xrender_support) << "XRender is not supported!";
XWindowAttributes attr;
XGetWindowAttributes(display_, window_, &attr);
XRenderPictFormat* pictformat = XRenderFindVisualFormat(
display_,
attr.visual);
CHECK(pictformat) << "XRENDER does not support default visual";
picture_ = XRenderCreatePicture(display_, window_, pictformat, 0, NULL);
CHECK(picture_) << "Backing picture not created";
}
void X11View::AllocateFrame(media::VideoFrame::Format format,
size_t width,
size_t height,
base::TimeDelta timestamp,
base::TimeDelta duration,
scoped_refptr<media::VideoFrame>* frame_out,
Task* done) {
// TODO(ajwong): Implement this to use the native X window rather than
// just a generic frame buffer.
media::VideoFrame::CreateFrame(media::VideoFrame::RGB32,
width, height,
base::TimeDelta(), base::TimeDelta(),
frame_out);
if (*frame_out) {
(*frame_out)->AddRef();
}
done->Run();
delete done;
}
void X11View::ReleaseFrame(media::VideoFrame* frame) {
if (frame) {
LOG(WARNING) << "Frame released.";
frame->Release();
}
}
void X11View::OnPartialFrameOutput(media::VideoFrame* frame,
UpdatedRects* rects,
Task* done) {
// TODO(hclam): Make sure we call this method on the right thread. Since
// decoder is single-threaded we don't have a problem but we better post
// a task to do the right thing.
for (UpdatedRects::iterator it = rects->begin(); it != rects->end(); ++it) {
PaintRect(frame, *it);
}
// TODO(ajwong): Shouldn't we only expose the part of the window that was
// damanged?
XEvent event;
event.type = Expose;
XSendEvent(display_, static_cast<int>(window_), true, ExposureMask, &event);
done->Run();
delete done;
}
} // namespace remoting
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