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// Copyright (c) 2012 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 "content/browser/renderer_host/surface_texture_transport_client_android.h"
#include <android/native_window_jni.h>
#include "base/bind.h"
#include "cc/layers/video_layer.h"
#include "content/browser/gpu/gpu_surface_tracker.h"
#include "content/browser/renderer_host/compositor_impl_android.h"
#include "content/browser/renderer_host/image_transport_factory_android.h"
#include "content/public/browser/browser_thread.h"
#include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
#include "third_party/khronos/GLES2/gl2.h"
#include "third_party/khronos/GLES2/gl2ext.h"
#include "ui/gl/android/surface_texture_bridge.h"
namespace content {
namespace {
static const uint32 kGLTextureExternalOES = 0x8D65;
class SurfaceRefAndroid : public GpuSurfaceTracker::SurfaceRef {
public:
SurfaceRefAndroid(
const scoped_refptr<gfx::SurfaceTextureBridge>& surface,
ANativeWindow* window)
: surface_(surface),
window_(window) {
ANativeWindow_acquire(window_);
}
private:
virtual ~SurfaceRefAndroid() {
DCHECK(window_);
ANativeWindow_release(window_);
}
scoped_refptr<gfx::SurfaceTextureBridge> surface_;
ANativeWindow* window_;
};
} // anonymous namespace
SurfaceTextureTransportClient::SurfaceTextureTransportClient()
: window_(NULL),
texture_id_(0),
texture_mailbox_sync_point_(0),
surface_id_(0),
weak_factory_(this) {
}
SurfaceTextureTransportClient::~SurfaceTextureTransportClient() {
}
scoped_refptr<cc::Layer> SurfaceTextureTransportClient::Initialize() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Use a SurfaceTexture to stream frames to the UI thread.
video_layer_ = cc::VideoLayer::Create(this);
surface_texture_ = new gfx::SurfaceTextureBridge(0);
surface_texture_->SetFrameAvailableCallback(
base::Bind(
&SurfaceTextureTransportClient::OnSurfaceTextureFrameAvailable,
weak_factory_.GetWeakPtr()));
surface_texture_->DetachFromGLContext();
return video_layer_.get();
}
gfx::GLSurfaceHandle
SurfaceTextureTransportClient::GetCompositingSurface(int surface_id) {
DCHECK(surface_id);
surface_id_ = surface_id;
if (!window_) {
window_ = surface_texture_->CreateSurface();
GpuSurfaceTracker::Get()->SetNativeWidget(
surface_id, window_, new SurfaceRefAndroid(surface_texture_, window_));
// SurfaceRefAndroid took ownership (and an extra ref to) window_.
ANativeWindow_release(window_);
}
return gfx::GLSurfaceHandle(gfx::kNullPluginWindow, gfx::NATIVE_DIRECT);
}
void SurfaceTextureTransportClient::SetSize(const gfx::Size& size) {
if (size.width() > 0 && size.height() > 0) {
surface_texture_->SetDefaultBufferSize(size.width(), size.height());
}
video_layer_->SetBounds(size);
video_frame_ = NULL;
}
scoped_refptr<media::VideoFrame> SurfaceTextureTransportClient::
GetCurrentFrame() {
if (!texture_id_) {
WebKit::WebGraphicsContext3D* context =
ImageTransportFactoryAndroid::GetInstance()->GetContext3D();
context->makeContextCurrent();
texture_id_ = context->createTexture();
context->bindTexture(GL_TEXTURE_EXTERNAL_OES, texture_id_);
context->flush();
surface_texture_->AttachToGLContext();
context->genMailboxCHROMIUM(texture_mailbox_.name);
context->produceTextureCHROMIUM(kGLTextureExternalOES,
texture_mailbox_.name);
texture_mailbox_sync_point_ = context->insertSyncPoint();
}
if (!video_frame_.get()) {
const gfx::Size size = video_layer_->bounds();
video_frame_ = media::VideoFrame::WrapNativeTexture(
new media::VideoFrame::MailboxHolder(
texture_mailbox_,
texture_mailbox_sync_point_,
media::VideoFrame::MailboxHolder::TextureNoLongerNeededCallback()),
kGLTextureExternalOES,
size,
gfx::Rect(gfx::Point(), size),
size,
base::TimeDelta(),
media::VideoFrame::ReadPixelsCB(),
base::Closure());
}
surface_texture_->UpdateTexImage();
return video_frame_;
}
void SurfaceTextureTransportClient::PutCurrentFrame(
const scoped_refptr<media::VideoFrame>& frame) {
}
void SurfaceTextureTransportClient::OnSurfaceTextureFrameAvailable() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
video_layer_->SetNeedsDisplay();
}
} // namespace content
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