Index: gpu/command_buffer/service/mailbox_manager.cc |
=================================================================== |
--- gpu/command_buffer/service/mailbox_manager.cc (revision 0) |
+++ gpu/command_buffer/service/mailbox_manager.cc (revision 0) |
@@ -0,0 +1,147 @@ |
+// 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 "crypto/secure_hash.h" |
+#include "crypto/symmetric_key.h" |
+#include "gpu/command_buffer/service/gl_utils.h" |
+#include "gpu/command_buffer/service/mailbox_manager.h" |
+#include "gpu/command_buffer/service/texture_definition.h" |
+ |
+namespace gpu { |
+namespace gles2 { |
+ |
+MailboxManager::MailboxManager() { |
+ crypto::SymmetricKey* key = |
+ crypto::SymmetricKey::GenerateRandomKey(crypto::SymmetricKey::AES, |
+ sizeof(private_key_) * 8); |
+ std::string raw_key; |
+ key->GetRawKey(&raw_key); |
+ |
+ DCHECK(raw_key.length() == sizeof(private_key_)); |
+ |
+ raw_key.copy(reinterpret_cast<char*>(private_key_), sizeof(private_key_)); |
+} |
+ |
+MailboxManager::~MailboxManager() { |
+} |
+ |
+void MailboxManager::GenerateMailboxName(MailboxName* name) { |
+ crypto::SymmetricKey* key = |
+ crypto::SymmetricKey::GenerateRandomKey(crypto::SymmetricKey::AES, |
+ sizeof(name->key) * 8); |
+ std::string raw_key; |
+ key->GetRawKey(&raw_key); |
+ |
+ DCHECK(raw_key.length() == sizeof(name->key)); |
+ |
+ raw_key.copy(reinterpret_cast<char*>(name->key), sizeof(name->key)); |
+ |
+ SignMailboxName(name); |
+} |
+ |
+TextureDefinition* MailboxManager::ConsumeTexture(unsigned target, |
+ const MailboxName& name) { |
+ if (!IsMailboxNameValid(name)) |
+ return NULL; |
+ |
+ TextureDefinitionMap::iterator it = |
+ textures_.find(TargetName(target, name)); |
+ if (it == textures_.end()) { |
+ NOTREACHED(); |
+ return NULL; |
+ } |
+ |
+ TextureDefinition* definition = it->second.definition.release(); |
+ textures_.erase(it); |
+ |
+ return definition; |
+} |
+ |
+bool MailboxManager::ProduceTexture(unsigned target, |
+ const MailboxName& name, |
+ TextureDefinition* definition, |
+ TextureManager* owner) { |
+ if (!IsMailboxNameValid(name)) |
+ return false; |
+ |
+ TextureDefinitionMap::iterator it = |
+ textures_.find(TargetName(target, name)); |
+ if (it != textures_.end()) { |
+ NOTREACHED(); |
+ GLuint service_id = it->second.definition->ReleaseServiceId(); |
+ glDeleteTextures(1, &service_id); |
+ it->second = OwnedTextureDefinition(definition, owner); |
+ } else { |
+ textures_.insert(std::make_pair( |
+ TargetName(target, name), |
+ OwnedTextureDefinition(definition, owner))); |
+ } |
+ |
+ return true; |
+} |
+ |
+void MailboxManager::DestroyOwnedTextures(TextureManager* owner, |
+ bool have_context) { |
+ TextureDefinitionMap::iterator it = textures_.begin(); |
+ while (it != textures_.end()) { |
+ if (it->second.owner == owner) { |
+ NOTREACHED(); |
+ GLuint service_id = it->second.definition->ReleaseServiceId(); |
+ if (have_context) |
+ glDeleteTextures(1, &service_id); |
+ it = textures_.erase(it); |
+ } else { |
+ ++it; |
+ } |
+ } |
+} |
+ |
+void MailboxManager::SignMailboxName(MailboxName* name) { |
+ scoped_ptr<crypto::SecureHash> hash(crypto::SecureHash::Create( |
+ crypto::SecureHash::SHA256)); |
+ |
+ hash->Update(name->key, sizeof(name->key)); |
+ hash->Update(private_key_, sizeof(private_key_)); |
+ hash->Finish(name->signature, sizeof(name->signature)); |
+} |
+ |
+bool MailboxManager::IsMailboxNameValid(const MailboxName& name) { |
+ MailboxName signed_name = name; |
+ SignMailboxName(&signed_name); |
+ |
+ return memcmp(name.signature, |
+ signed_name.signature, |
+ sizeof(name.signature)) == 0; |
+} |
+ |
+MailboxManager::TargetName::TargetName(unsigned target, const MailboxName& name) |
+ : target(target), |
+ name(name) { |
+} |
+ |
+size_t MailboxManager::TargetNameCompare::operator() ( |
+ const TargetName& value) const { |
+ size_t hash = value.target; |
+ for (int i = 0; i < arraysize(value.name.key); ++i) |
+ hash ^= value.name.key[i]; |
+ return hash; |
+} |
+ |
+int MailboxManager::TargetNameCompare::operator() ( |
+ const TargetName& lhs, |
+ const TargetName& rhs) const { |
+ return memcmp(&lhs, &rhs, sizeof(lhs)); |
+} |
+ |
+MailboxManager::OwnedTextureDefinition::OwnedTextureDefinition( |
+ TextureDefinition* definition, |
+ TextureManager* owner) |
+ : definition(definition), |
+ owner(owner) { |
+} |
+ |
+MailboxManager::OwnedTextureDefinition::~OwnedTextureDefinition() { |
+} |
+} // namespace gles2 |
+} // namespace gpu |
Property changes on: gpu\command_buffer\service\mailbox_manager.cc |
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Added: svn:eol-style |
+ LF |