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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/renderer/media/stream_texture_factory_impl_android.h"
#include "base/bind.h"
#include "base/compiler_specific.h"
#include "base/message_loop_proxy.h"
#include "base/synchronization/lock.h"
#include "content/common/android/surface_texture_peer.h"
#include "content/common/gpu/client/gpu_channel_host.h"
#include "content/common/gpu/gpu_messages.h"
#include "content/renderer/render_thread_impl.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebStreamTextureClient.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebGraphicsContext3D.h"
#include "ui/gfx/size.h"
namespace {
static void DeleteStreamTextureHost(content::StreamTextureHost* host) {
delete host;
}
// Implementation of the StreamTextureProxy class. This class listens to all
// the stream texture updates and forward them to the WebStreamTextureClient.
class StreamTextureProxyImpl : public webkit_media::StreamTextureProxy,
public content::StreamTextureHost::Listener {
public:
explicit StreamTextureProxyImpl(content::StreamTextureHost* host);
virtual ~StreamTextureProxyImpl();
// webkit_media::StreamTextureProxy implementation:
virtual bool Initialize(int stream_id, int width, int height) OVERRIDE;
virtual bool IsInitialized() OVERRIDE { return initialized_; }
virtual void SetClient(WebKit::WebStreamTextureClient* client) OVERRIDE;
// StreamTextureHost::Listener implementation:
virtual void OnFrameAvailable() OVERRIDE;
virtual void OnMatrixChanged(const float matrix[16]) OVERRIDE;
private:
scoped_ptr<content::StreamTextureHost> host_;
scoped_refptr<base::MessageLoopProxy> loop_;
base::Lock client_lock_;
WebKit::WebStreamTextureClient* client_;
bool initialized_;
DISALLOW_COPY_AND_ASSIGN(StreamTextureProxyImpl);
};
StreamTextureProxyImpl::StreamTextureProxyImpl(
content::StreamTextureHost* host)
: host_(host),
client_(NULL),
initialized_(false) {
DCHECK(host);
host->SetListener(this);
}
StreamTextureProxyImpl::~StreamTextureProxyImpl() {
SetClient(NULL);
// The StreamTextureHost instance needs to be deleted on the thread
// it receives messages on (where it uses a WeakPtr).
if (loop_.get()) {
loop_->PostTask(FROM_HERE, base::Bind(&DeleteStreamTextureHost,
host_.release()));
}
}
void StreamTextureProxyImpl::SetClient(WebKit::WebStreamTextureClient* client) {
base::AutoLock lock(client_lock_);
client_ = client;
}
bool StreamTextureProxyImpl::Initialize(int stream_id, int width, int height) {
loop_ = base::MessageLoopProxy::current();
initialized_ = true;
return host_->Initialize(stream_id, gfx::Size(width, height));
}
void StreamTextureProxyImpl::OnFrameAvailable() {
base::AutoLock lock(client_lock_);
if (client_)
client_->didReceiveFrame();
}
void StreamTextureProxyImpl::OnMatrixChanged(const float matrix[16]) {
base::AutoLock lock(client_lock_);
if (client_)
client_->didUpdateMatrix(matrix);
}
} // anonymous namespace
namespace content {
StreamTextureFactoryImpl::StreamTextureFactoryImpl(
WebKit::WebGraphicsContext3D* context,
GpuChannelHost* channel,
int view_id)
: context_(context),
channel_(channel),
view_id_(view_id) {
DCHECK(context_);
DCHECK(channel);
}
StreamTextureFactoryImpl::~StreamTextureFactoryImpl() {
}
webkit_media::StreamTextureProxy* StreamTextureFactoryImpl::CreateProxy() {
DCHECK(channel_.get());
StreamTextureHost* host = new StreamTextureHost(channel_.get());
return new StreamTextureProxyImpl(host);
}
void StreamTextureFactoryImpl::EstablishPeer(int stream_id, int player_id) {
DCHECK(channel_.get());
channel_->Send(new GpuChannelMsg_EstablishStreamTexture(
stream_id, SurfaceTexturePeer::SET_VIDEO_SURFACE_TEXTURE,
view_id_, player_id));
}
unsigned StreamTextureFactoryImpl::CreateStreamTexture(unsigned* texture_id) {
unsigned stream_id = 0;
if (context_->makeContextCurrent()) {
*texture_id = context_->createTexture();
stream_id = context_->createStreamTextureCHROMIUM(*texture_id);
context_->flush();
}
return stream_id;
}
void StreamTextureFactoryImpl::DestroyStreamTexture(unsigned texture_id) {
if (context_->makeContextCurrent()) {
context_->destroyStreamTextureCHROMIUM(texture_id);
context_->deleteTexture(texture_id);
context_->flush();
}
}
} // namespace content
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