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| 1 // Copyright 2013 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 "cc/resources/texture_mailbox.h" |  | 
| 6 |  | 
| 7 #include "base/logging.h" |  | 
| 8 #include "cc/resources/shared_bitmap.h" |  | 
| 9 |  | 
| 10 namespace cc { |  | 
| 11 |  | 
| 12 TextureMailbox::TextureMailbox() : shared_bitmap_(NULL) { |  | 
| 13 } |  | 
| 14 |  | 
| 15 TextureMailbox::TextureMailbox(const gpu::MailboxHolder& mailbox_holder) |  | 
| 16     : mailbox_holder_(mailbox_holder), |  | 
| 17       shared_bitmap_(NULL), |  | 
| 18       allow_overlay_(false), |  | 
| 19       nearest_neighbor_(false) { |  | 
| 20 } |  | 
| 21 |  | 
| 22 TextureMailbox::TextureMailbox(const gpu::Mailbox& mailbox, |  | 
| 23                                uint32 target, |  | 
| 24                                uint32 sync_point) |  | 
| 25     : mailbox_holder_(mailbox, target, sync_point), |  | 
| 26       shared_bitmap_(NULL), |  | 
| 27       allow_overlay_(false), |  | 
| 28       nearest_neighbor_(false) { |  | 
| 29 } |  | 
| 30 |  | 
| 31 TextureMailbox::TextureMailbox(SharedBitmap* shared_bitmap, |  | 
| 32                                const gfx::Size& size) |  | 
| 33     : shared_bitmap_(shared_bitmap), |  | 
| 34       shared_memory_size_(size), |  | 
| 35       allow_overlay_(false), |  | 
| 36       nearest_neighbor_(false) { |  | 
| 37   // If an embedder of cc gives an invalid TextureMailbox, we should crash |  | 
| 38   // here to identify the offender. |  | 
| 39   CHECK(SharedBitmap::VerifySizeInBytes(shared_memory_size_)); |  | 
| 40 } |  | 
| 41 |  | 
| 42 TextureMailbox::~TextureMailbox() {} |  | 
| 43 |  | 
| 44 bool TextureMailbox::Equals(const TextureMailbox& other) const { |  | 
| 45   if (other.IsTexture()) { |  | 
| 46     return IsTexture() && !memcmp(mailbox_holder_.mailbox.name, |  | 
| 47                                   other.mailbox_holder_.mailbox.name, |  | 
| 48                                   sizeof(mailbox_holder_.mailbox.name)); |  | 
| 49   } else if (other.IsSharedMemory()) { |  | 
| 50     return IsSharedMemory() && (shared_bitmap_ == other.shared_bitmap_); |  | 
| 51   } |  | 
| 52 |  | 
| 53   DCHECK(!other.IsValid()); |  | 
| 54   return !IsValid(); |  | 
| 55 } |  | 
| 56 |  | 
| 57 size_t TextureMailbox::SharedMemorySizeInBytes() const { |  | 
| 58   // UncheckedSizeInBytes is okay because we VerifySizeInBytes in the |  | 
| 59   // constructor and the field is immutable. |  | 
| 60   return SharedBitmap::UncheckedSizeInBytes(shared_memory_size_); |  | 
| 61 } |  | 
| 62 |  | 
| 63 }  // namespace cc |  | 
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