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Offscreen render support base

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This commit is contained in:
Heilig Benedek 2015-08-27 11:22:39 +02:00
parent 0efdb448b6
commit e4c01f3187
10 changed files with 112 additions and 6 deletions
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58
atom/browser/native_window.cc
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@ -8,6 +8,9 @@
#include <utility>
#include <vector>
#include "content/public/browser/render_widget_host_view_frame_subscriber.h"
#include "media/base/video_frame.h"
#include "media/base/yuv_convert.h"
#include "atom/browser/atom_browser_context.h"
#include "atom/browser/atom_browser_main_parts.h"
#include "atom/browser/window_list.h"
@ -147,8 +150,9 @@ NativeWindow* NativeWindow::FromWebContents(
content::WebContents* web_contents) {
WindowList& window_list = *WindowList::GetInstance();
for (NativeWindow* window : window_list) {
if (window->web_contents() == web_contents)
if (window->web_contents() == web_contents){
return window;
}
}
return nullptr;
}
@ -201,6 +205,9 @@ void NativeWindow::InitFromOptions(const mate::Dictionary& options) {
options.Get(switches::kTitle, &title);
SetTitle(title);
offscreen_ = false;
options.Get(switches::kOffScreenRender, &offscreen_);
// Then show it.
bool show = true;
options.Get(switches::kShow, &show);
@ -540,6 +547,18 @@ void NativeWindow::DevToolsClosed() {
FOR_EACH_OBSERVER(NativeWindowObserver, observers_, OnDevToolsClosed());
}
void NativeWindow::RenderViewReady(){
if(offscreen_){
const auto view = web_contents()->GetRenderWidgetHostView();
scoped_ptr<content::RenderWidgetHostViewFrameSubscriber> subscriber(new RenderSubscriber(
view->GetVisibleViewportSize(), base::Bind(&NativeWindow::OnFrameReceived, base::Unretained(this))
));
view->BeginFrameSubscription(subscriber.Pass());
}
}
void NativeWindow::RenderViewCreated(
content::RenderViewHost* render_view_host) {
if (!transparent_)
@ -617,4 +636,41 @@ void NativeWindow::OnCapturePageDone(const CapturePageCallback& callback,
callback.Run(bitmap);
}
void NativeWindow::OnFrameReceived(bool result, scoped_refptr<media::VideoFrame> frame) {
if(result){
gfx::Rect rect = frame->visible_rect();
const int rgb_arr_size = rect.width()*rect.height()*4;
scoped_ptr<uint8[]> rgb_bytes(new uint8[rgb_arr_size]);
// Convert a frame of YUV to 32 bit ARGB.
media::ConvertYUVToRGB32(frame->data(media::VideoFrame::kYPlane),
frame->data(media::VideoFrame::kUPlane),
frame->data(media::VideoFrame::kVPlane),
rgb_bytes.get(),
rect.width(), rect.height(),
frame->stride(media::VideoFrame::kYPlane),
frame->stride(media::VideoFrame::kUVPlane),
rect.width()*4,
media::YV12);
FOR_EACH_OBSERVER(NativeWindowObserver,
observers_,
OnFrameRendered(rgb_bytes.Pass(), rgb_arr_size));
}
}
bool RenderSubscriber::ShouldCaptureFrame(const gfx::Rect& damage_rect,
base::TimeTicks present_time,
scoped_refptr<media::VideoFrame>* storage,
DeliverFrameCallback* callback) {
last_present_time_ = present_time;
*storage = media::VideoFrame::CreateFrame(media::VideoFrame::YV12, size_,
gfx::Rect(size_), size_,
base::TimeDelta());
*callback = base::Bind(&RenderSubscriber::CallbackMethod, callback_, *storage);
return true;
}
} // namespace atom