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126 lines
4.1 KiB
C++
126 lines
4.1 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "sky/viewer/cc/web_external_texture_layer_impl.h"
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#include "sky/viewer/cc/web_external_bitmap_impl.h"
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#include "sky/viewer/cc/web_layer_impl.h"
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#include "cc/layers/texture_layer.h"
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#include "cc/resources/resource_update_queue.h"
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#include "cc/resources/single_release_callback.h"
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#include "cc/resources/texture_mailbox.h"
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#include "sky/engine/public/platform/WebExternalTextureLayerClient.h"
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#include "sky/engine/public/platform/WebExternalTextureMailbox.h"
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#include "sky/engine/public/platform/WebFloatRect.h"
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#include "sky/engine/public/platform/WebGraphicsContext3D.h"
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#include "sky/engine/public/platform/WebSize.h"
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#include "third_party/khronos/GLES2/gl2.h"
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using cc::TextureLayer;
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using cc::ResourceUpdateQueue;
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namespace sky_viewer_cc {
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WebExternalTextureLayerImpl::WebExternalTextureLayerImpl(
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blink::WebExternalTextureLayerClient* client)
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: client_(client) {
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cc::TextureLayerClient* cc_client = client_ ? this : NULL;
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scoped_refptr<TextureLayer> layer = TextureLayer::CreateForMailbox(cc_client);
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layer->SetIsDrawable(true);
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layer_.reset(new WebLayerImpl(layer));
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}
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WebExternalTextureLayerImpl::~WebExternalTextureLayerImpl() {
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static_cast<TextureLayer*>(layer_->layer())->ClearClient();
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}
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blink::WebLayer* WebExternalTextureLayerImpl::layer() {
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return layer_.get();
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}
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void WebExternalTextureLayerImpl::clearTexture() {
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TextureLayer* layer = static_cast<TextureLayer*>(layer_->layer());
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layer->ClearTexture();
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}
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void WebExternalTextureLayerImpl::setOpaque(bool opaque) {
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static_cast<TextureLayer*>(layer_->layer())->SetContentsOpaque(opaque);
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}
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void WebExternalTextureLayerImpl::setPremultipliedAlpha(
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bool premultiplied_alpha) {
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static_cast<TextureLayer*>(layer_->layer())
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->SetPremultipliedAlpha(premultiplied_alpha);
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}
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void WebExternalTextureLayerImpl::setBlendBackgroundColor(bool blend) {
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static_cast<TextureLayer*>(layer_->layer())->SetBlendBackgroundColor(blend);
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}
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void WebExternalTextureLayerImpl::setRateLimitContext(bool rate_limit) {
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static_cast<TextureLayer*>(layer_->layer())->SetRateLimitContext(rate_limit);
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}
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bool WebExternalTextureLayerImpl::PrepareTextureMailbox(
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cc::TextureMailbox* mailbox,
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scoped_ptr<cc::SingleReleaseCallback>* release_callback,
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bool use_shared_memory) {
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blink::WebExternalTextureMailbox client_mailbox;
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WebExternalBitmapImpl* bitmap = NULL;
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if (use_shared_memory)
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bitmap = AllocateBitmap();
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if (!client_->prepareMailbox(&client_mailbox, bitmap)) {
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if (bitmap)
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free_bitmaps_.push_back(bitmap);
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return false;
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}
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gpu::Mailbox name;
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name.SetName(client_mailbox.name);
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if (bitmap) {
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*mailbox = cc::TextureMailbox(bitmap->shared_memory(), bitmap->size());
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} else {
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*mailbox =
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cc::TextureMailbox(name, GL_TEXTURE_2D, client_mailbox.syncPoint);
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}
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mailbox->set_allow_overlay(client_mailbox.allowOverlay);
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if (mailbox->IsValid()) {
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*release_callback = cc::SingleReleaseCallback::Create(
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base::Bind(&WebExternalTextureLayerImpl::DidReleaseMailbox,
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this->AsWeakPtr(),
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client_mailbox,
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bitmap));
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}
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return true;
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}
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WebExternalBitmapImpl* WebExternalTextureLayerImpl::AllocateBitmap() {
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if (!free_bitmaps_.empty()) {
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WebExternalBitmapImpl* result = free_bitmaps_.back();
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free_bitmaps_.weak_erase(free_bitmaps_.end() - 1);
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return result;
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}
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return new WebExternalBitmapImpl;
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}
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// static
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void WebExternalTextureLayerImpl::DidReleaseMailbox(
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base::WeakPtr<WebExternalTextureLayerImpl> layer,
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const blink::WebExternalTextureMailbox& mailbox,
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WebExternalBitmapImpl* bitmap,
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unsigned sync_point,
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bool lost_resource) {
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DCHECK(layer);
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blink::WebExternalTextureMailbox available_mailbox;
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memcpy(available_mailbox.name, mailbox.name, sizeof(available_mailbox.name));
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available_mailbox.syncPoint = sync_point;
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if (bitmap)
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layer->free_bitmaps_.push_back(bitmap);
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layer->client_->mailboxReleased(available_mailbox, lost_resource);
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}
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} // namespace sky_viewer_cc
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