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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "content/renderer/compositor_bindings/web_external_texture_layer_impl.h
" | |
6 | |
7 #include "cc/layers/texture_layer.h" | |
8 #include "cc/resources/resource_update_queue.h" | |
9 #include "cc/resources/single_release_callback.h" | |
10 #include "cc/resources/texture_mailbox.h" | |
11 #include "content/renderer/compositor_bindings/web_external_bitmap_impl.h" | |
12 #include "content/renderer/compositor_bindings/web_layer_impl.h" | |
13 #include "third_party/WebKit/public/platform/WebExternalTextureLayerClient.h" | |
14 #include "third_party/WebKit/public/platform/WebExternalTextureMailbox.h" | |
15 #include "third_party/WebKit/public/platform/WebFloatRect.h" | |
16 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h" | |
17 #include "third_party/WebKit/public/platform/WebSize.h" | |
18 #include "third_party/khronos/GLES2/gl2.h" | |
19 | |
20 using cc::TextureLayer; | |
21 using cc::ResourceUpdateQueue; | |
22 | |
23 namespace content { | |
24 | |
25 WebExternalTextureLayerImpl::WebExternalTextureLayerImpl( | |
26 blink::WebExternalTextureLayerClient* client) | |
27 : client_(client) { | |
28 cc::TextureLayerClient* cc_client = client_ ? this : NULL; | |
29 scoped_refptr<TextureLayer> layer = TextureLayer::CreateForMailbox(cc_client); | |
30 layer->SetIsDrawable(true); | |
31 layer_.reset(new WebLayerImpl(layer)); | |
32 } | |
33 | |
34 WebExternalTextureLayerImpl::~WebExternalTextureLayerImpl() { | |
35 static_cast<TextureLayer*>(layer_->layer())->ClearClient(); | |
36 } | |
37 | |
38 blink::WebLayer* WebExternalTextureLayerImpl::layer() { | |
39 return layer_.get(); | |
40 } | |
41 | |
42 void WebExternalTextureLayerImpl::clearTexture() { | |
43 TextureLayer* layer = static_cast<TextureLayer*>(layer_->layer()); | |
44 layer->ClearTexture(); | |
45 } | |
46 | |
47 void WebExternalTextureLayerImpl::setOpaque(bool opaque) { | |
48 static_cast<TextureLayer*>(layer_->layer())->SetContentsOpaque(opaque); | |
49 } | |
50 | |
51 void WebExternalTextureLayerImpl::setPremultipliedAlpha( | |
52 bool premultiplied_alpha) { | |
53 static_cast<TextureLayer*>(layer_->layer())->SetPremultipliedAlpha( | |
54 premultiplied_alpha); | |
55 } | |
56 | |
57 void WebExternalTextureLayerImpl::setBlendBackgroundColor(bool blend) { | |
58 static_cast<TextureLayer*>(layer_->layer())->SetBlendBackgroundColor(blend); | |
59 } | |
60 | |
61 void WebExternalTextureLayerImpl::setRateLimitContext(bool rate_limit) { | |
62 static_cast<TextureLayer*>(layer_->layer())->SetRateLimitContext(rate_limit); | |
63 } | |
64 | |
65 bool WebExternalTextureLayerImpl::PrepareTextureMailbox( | |
66 cc::TextureMailbox* mailbox, | |
67 scoped_ptr<cc::SingleReleaseCallback>* release_callback, | |
68 bool use_shared_memory) { | |
69 blink::WebExternalTextureMailbox client_mailbox; | |
70 WebExternalBitmapImpl* bitmap = NULL; | |
71 | |
72 if (use_shared_memory) | |
73 bitmap = AllocateBitmap(); | |
74 if (!client_->prepareMailbox(&client_mailbox, bitmap)) { | |
75 if (bitmap) | |
76 free_bitmaps_.push_back(bitmap); | |
77 return false; | |
78 } | |
79 gpu::Mailbox name; | |
80 name.SetName(client_mailbox.name); | |
81 if (bitmap) { | |
82 *mailbox = cc::TextureMailbox(bitmap->shared_memory(), bitmap->size()); | |
83 } else { | |
84 *mailbox = | |
85 cc::TextureMailbox(name, GL_TEXTURE_2D, client_mailbox.syncPoint); | |
86 } | |
87 mailbox->set_allow_overlay(client_mailbox.allowOverlay); | |
88 | |
89 if (mailbox->IsValid()) { | |
90 *release_callback = cc::SingleReleaseCallback::Create( | |
91 base::Bind(&WebExternalTextureLayerImpl::DidReleaseMailbox, | |
92 this->AsWeakPtr(), | |
93 client_mailbox, | |
94 bitmap)); | |
95 } | |
96 | |
97 return true; | |
98 } | |
99 | |
100 WebExternalBitmapImpl* WebExternalTextureLayerImpl::AllocateBitmap() { | |
101 if (!free_bitmaps_.empty()) { | |
102 WebExternalBitmapImpl* result = free_bitmaps_.back(); | |
103 free_bitmaps_.weak_erase(free_bitmaps_.end() - 1); | |
104 return result; | |
105 } | |
106 return new WebExternalBitmapImpl; | |
107 } | |
108 | |
109 // static | |
110 void WebExternalTextureLayerImpl::DidReleaseMailbox( | |
111 base::WeakPtr<WebExternalTextureLayerImpl> layer, | |
112 const blink::WebExternalTextureMailbox& mailbox, | |
113 WebExternalBitmapImpl* bitmap, | |
114 unsigned sync_point, | |
115 bool lost_resource) { | |
116 DCHECK(layer); | |
117 blink::WebExternalTextureMailbox available_mailbox; | |
118 memcpy(available_mailbox.name, mailbox.name, sizeof(available_mailbox.name)); | |
119 available_mailbox.syncPoint = sync_point; | |
120 if (bitmap) | |
121 layer->free_bitmaps_.push_back(bitmap); | |
122 layer->client_->mailboxReleased(available_mailbox, lost_resource); | |
123 } | |
124 | |
125 } // namespace content | |
126 | |
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