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// Copyright 2014 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 "cc/blink/web_external_texture_layer_impl.h"
#include "cc/blink/web_external_bitmap_impl.h"
#include "cc/blink/web_layer_impl.h"
#include "cc/layers/texture_layer.h"
#include "cc/resources/resource_update_queue.h"
#include "cc/resources/single_release_callback.h"
#include "cc/resources/texture_mailbox.h"
#include "third_party/WebKit/public/platform/WebExternalTextureLayerClient.h"
#include "third_party/WebKit/public/platform/WebExternalTextureMailbox.h"
#include "third_party/WebKit/public/platform/WebFloatRect.h"
#include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
#include "third_party/WebKit/public/platform/WebSize.h"
#include "third_party/khronos/GLES2/gl2.h"
using cc::TextureLayer;
using cc::ResourceUpdateQueue;
namespace cc_blink {
WebExternalTextureLayerImpl::WebExternalTextureLayerImpl(
blink::WebExternalTextureLayerClient* client)
: client_(client) {
cc::TextureLayerClient* cc_client = client_ ? this : NULL;
scoped_refptr<TextureLayer> layer = TextureLayer::CreateForMailbox(cc_client);
layer->SetIsDrawable(true);
layer_.reset(new WebLayerImpl(layer));
}
WebExternalTextureLayerImpl::~WebExternalTextureLayerImpl() {
static_cast<TextureLayer*>(layer_->layer())->ClearClient();
}
blink::WebLayer* WebExternalTextureLayerImpl::layer() {
return layer_.get();
}
void WebExternalTextureLayerImpl::clearTexture() {
TextureLayer* layer = static_cast<TextureLayer*>(layer_->layer());
layer->ClearTexture();
}
void WebExternalTextureLayerImpl::setOpaque(bool opaque) {
static_cast<TextureLayer*>(layer_->layer())->SetContentsOpaque(opaque);
}
void WebExternalTextureLayerImpl::setPremultipliedAlpha(
bool premultiplied_alpha) {
static_cast<TextureLayer*>(layer_->layer())
->SetPremultipliedAlpha(premultiplied_alpha);
}
void WebExternalTextureLayerImpl::setBlendBackgroundColor(bool blend) {
static_cast<TextureLayer*>(layer_->layer())->SetBlendBackgroundColor(blend);
}
void WebExternalTextureLayerImpl::setRateLimitContext(bool rate_limit) {
static_cast<TextureLayer*>(layer_->layer())->SetRateLimitContext(rate_limit);
}
bool WebExternalTextureLayerImpl::PrepareTextureMailbox(
cc::TextureMailbox* mailbox,
scoped_ptr<cc::SingleReleaseCallback>* release_callback,
bool use_shared_memory) {
blink::WebExternalTextureMailbox client_mailbox;
WebExternalBitmapImpl* bitmap = NULL;
if (use_shared_memory)
bitmap = AllocateBitmap();
if (!client_->prepareMailbox(&client_mailbox, bitmap)) {
if (bitmap)
free_bitmaps_.push_back(bitmap);
return false;
}
gpu::Mailbox name;
name.SetName(client_mailbox.name);
if (bitmap) {
*mailbox = cc::TextureMailbox(bitmap->shared_memory(), bitmap->size());
} else {
*mailbox =
cc::TextureMailbox(name, GL_TEXTURE_2D, client_mailbox.syncPoint);
}
mailbox->set_allow_overlay(client_mailbox.allowOverlay);
if (mailbox->IsValid()) {
*release_callback = cc::SingleReleaseCallback::Create(
base::Bind(&WebExternalTextureLayerImpl::DidReleaseMailbox,
this->AsWeakPtr(),
client_mailbox,
bitmap));
}
return true;
}
WebExternalBitmapImpl* WebExternalTextureLayerImpl::AllocateBitmap() {
if (!free_bitmaps_.empty()) {
WebExternalBitmapImpl* result = free_bitmaps_.back();
free_bitmaps_.weak_erase(free_bitmaps_.end() - 1);
return result;
}
return new WebExternalBitmapImpl;
}
// static
void WebExternalTextureLayerImpl::DidReleaseMailbox(
base::WeakPtr<WebExternalTextureLayerImpl> layer,
const blink::WebExternalTextureMailbox& mailbox,
WebExternalBitmapImpl* bitmap,
unsigned sync_point,
bool lost_resource) {
DCHECK(layer);
blink::WebExternalTextureMailbox available_mailbox;
memcpy(available_mailbox.name, mailbox.name, sizeof(available_mailbox.name));
available_mailbox.syncPoint = sync_point;
if (bitmap)
layer->free_bitmaps_.push_back(bitmap);
layer->client_->mailboxReleased(available_mailbox, lost_resource);
}
} // namespace cc_blink
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