blob: 19b67625a94363e53362e53c87c7d42135d1bc3c [file] [log] [blame]
// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "starboard/shared/x11/window_internal.h"
#include <X11/extensions/Xcomposite.h>
#include <X11/extensions/Xrender.h>
#include <X11/Xatom.h>
#include <X11/XKBlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <algorithm>
#include "starboard/configuration.h"
#include "starboard/double.h"
#include "starboard/log.h"
#include "starboard/player.h"
namespace {
const int kWindowWidth = 1920;
const int kWindowHeight = 1080;
bool HasNeededExtensionsForPunchedOutVideo(Display* display) {
int dummy;
return (XRenderQueryExtension(display, &dummy, &dummy) &&
XCompositeQueryExtension(display, &dummy, &dummy));
}
} // namespace
SbWindowPrivate::SbWindowPrivate(Display* display,
const SbWindowOptions* options)
: window(None),
window_picture(None),
composition_pixmap(None),
composition_picture(None),
video_pixmap(None),
video_pixmap_width(0),
video_pixmap_height(0),
video_pixmap_gc(None),
video_picture(None),
gl_window(None),
gl_picture(None),
display(display),
unhandled_resize(false) {
// Request a 32-bit depth visual for our Window.
XVisualInfo x_visual_info = {0};
XMatchVisualInfo(display, DefaultScreen(display), 32, TrueColor,
&x_visual_info);
Window root_window = RootWindow(display, x_visual_info.screen);
width = kWindowWidth;
height = kWindowHeight;
if (options && options->size.width > 0 && options->size.height > 0) {
width = options->size.width;
height = options->size.height;
}
XSetWindowAttributes swa = {0};
swa.event_mask =
KeyPressMask | KeyReleaseMask | StructureNotifyMask | FocusChangeMask;
swa.colormap =
XCreateColormap(display, root_window, x_visual_info.visual, AllocNone);
// Setting border_pixel to 0 is required if the requested window depth (e.g.
// 32) is not equal to the parent window's depth (e.g. 24).
swa.border_pixel = 0;
int attribute_flags = CWBorderPixel | CWEventMask | CWColormap;
window = XCreateWindow(display, root_window, 0, 0, width, height, 0,
x_visual_info.depth, InputOutput, x_visual_info.visual,
attribute_flags, &swa);
SB_CHECK(window != None) << "Failed to create the X window.";
const char* name = "Cobalt";
if (options && options->name) {
name = options->name;
}
XStoreName(display, window, name);
Atom wm_delete = XInternAtom(display, "WM_DELETE_WINDOW", True);
XSetWMProtocols(display, window, &wm_delete, 1);
SB_CHECK(HasNeededExtensionsForPunchedOutVideo(display));
gl_window = XCreateSimpleWindow(display, window, 0, 0, width, height, 0,
WhitePixel(display, DefaultScreen(display)),
BlackPixel(display, DefaultScreen(display)));
SB_CHECK(gl_window != None);
XMapWindow(display, gl_window);
// Manual redirection means that this window will only draw to its pixmap,
// and won't be automatically rendered onscreen. This is important, because
// the GL graphics will punch through any layers of windows up to, but not
// including, the root window. We must composite manually, in Composite(),
// to avoid that.
XCompositeRedirectWindow(display, gl_window, CompositeRedirectManual);
gl_picture = XRenderCreatePicture(
display, gl_window,
XRenderFindStandardFormat(display, PictStandardARGB32), 0, NULL);
SB_CHECK(gl_picture != None);
// Create the picture for compositing onto. This can persist across frames.
XRenderPictFormat* pict_format =
XRenderFindVisualFormat(display, x_visual_info.visual);
window_picture = XRenderCreatePicture(display, window, pict_format, 0, NULL);
SB_CHECK(window_picture != None);
XSelectInput(display, window,
VisibilityChangeMask | ExposureMask | FocusChangeMask |
StructureNotifyMask | KeyPressMask | KeyReleaseMask |
ButtonPressMask | ButtonReleaseMask | PointerMotionMask);
XMapWindow(display, window);
}
SbWindowPrivate::~SbWindowPrivate() {
if (composition_pixmap != None) {
XFreePixmap(display, composition_pixmap);
XRenderFreePicture(display, composition_picture);
}
if (video_pixmap != None) {
XRenderFreePicture(display, video_picture);
XFreeGC(display, video_pixmap_gc);
XFreePixmap(display, video_pixmap);
}
XRenderFreePicture(display, gl_picture);
XDestroyWindow(display, gl_window);
XRenderFreePicture(display, window_picture);
XDestroyWindow(display, window);
}
void SbWindowPrivate::BeginComposite() {
XSynchronize(display, True);
XWindowAttributes window_attributes;
XGetWindowAttributes(display, window, &window_attributes);
if (window_attributes.width != width ||
window_attributes.height != height) {
width = window_attributes.width;
height = window_attributes.height;
unhandled_resize = true;
if (composition_pixmap != None) {
XFreePixmap(display, composition_pixmap);
composition_pixmap = None;
XRenderFreePicture(display, composition_picture);
composition_picture = None;
}
}
if (composition_pixmap == None) {
composition_pixmap = XCreatePixmap(display, window, width, height, 32);
SB_DCHECK(composition_pixmap != None);
composition_picture = XRenderCreatePicture(
display, composition_pixmap,
XRenderFindStandardFormat(display, PictStandardARGB32), 0, NULL);
}
SB_CHECK(composition_picture != None);
XRenderColor black = {0x0000, 0x0000, 0x0000, 0xFFFF};
XRenderFillRectangle(display, PictOpSrc, composition_picture, &black, 0, 0,
width, height);
}
void SbWindowPrivate::CompositeVideoFrame(
int bounds_x,
int bounds_y,
int bounds_width,
int bounds_height,
const starboard::scoped_refptr<CpuVideoFrame>& frame) {
if (frame != NULL && frame->format() == CpuVideoFrame::kBGRA32 &&
frame->GetPlaneCount() > 0 && frame->width() > 0 && frame->height() > 0) {
if (frame->width() != video_pixmap_width ||
frame->height() != video_pixmap_height) {
if (video_pixmap != None) {
XRenderFreePicture(display, video_picture);
video_picture = None;
XFreeGC(display, video_pixmap_gc);
video_pixmap_gc = None;
XFreePixmap(display, video_pixmap);
video_pixmap = None;
}
}
if (video_pixmap == None) {
video_pixmap_width = frame->width();
video_pixmap_height = frame->height();
video_pixmap = XCreatePixmap(display, window, video_pixmap_width,
video_pixmap_height, 32);
SB_DCHECK(video_pixmap != None);
video_pixmap_gc = XCreateGC(display, video_pixmap, 0, NULL);
SB_DCHECK(video_pixmap_gc != None);
video_picture = XRenderCreatePicture(
display, video_pixmap,
XRenderFindStandardFormat(display, PictStandardARGB32), 0, NULL);
}
SB_CHECK(video_picture != None);
XImage image = {0};
image.width = frame->width();
image.height = frame->height();
image.format = ZPixmap;
image.data = const_cast<char*>(
reinterpret_cast<const char*>(frame->GetPlane(0).data));
image.depth = 32;
image.bits_per_pixel = 32;
image.bitmap_pad = 32;
image.bytes_per_line = frame->GetPlane(0).pitch_in_bytes;
Status status = XInitImage(&image);
SB_DCHECK(status);
// Upload the video frame to the X server.
XPutImage(display, video_pixmap, video_pixmap_gc, &image, 0, 0,
0, 0, image.width, image.height);
// Initially assume we don't have to center or scale.
if (bounds_width != width || bounds_height != height ||
frame->width() != width || frame->height() != height) {
// This transform maps the destination pixel back to the source pixel.
double sx = static_cast<double>(frame->width()) / bounds_width;
double sy = static_cast<double>(frame->height()) / bounds_height;
XTransform transform = {{
{ XDoubleToFixed(sx), XDoubleToFixed(0), XDoubleToFixed(0) },
{ XDoubleToFixed(0), XDoubleToFixed(sy), XDoubleToFixed(0) },
{ XDoubleToFixed(0), XDoubleToFixed(0), XDoubleToFixed(1) }
}};
XRenderSetPictureTransform(display, video_picture, &transform);
}
XRenderComposite(display, PictOpSrc, video_picture, None,
composition_picture, 0, 0, 0, 0, bounds_x, bounds_y,
bounds_width, bounds_height);
}
}
void SbWindowPrivate::EndComposite() {
// Composite (with blending) the GL output on top of the composition pixmap
// that already has the current video frame if video is playing.
XRenderComposite(display, PictOpOver, gl_picture, None, composition_picture,
0, 0, 0, 0, 0, 0, width, height);
// Now that we have a fully-composited frame in composition_pixmap, render it
// to the window, which acts as our front buffer.
XRenderComposite(display, PictOpSrc, composition_picture, None,
window_picture, 0, 0, 0, 0, 0, 0, width, height);
XSynchronize(display, False);
}