cc/resources/texture_mailbox.h

   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 #ifndef CC_RESOURCES_TEXTURE_MAILBOX_H_
   6 #define CC_RESOURCES_TEXTURE_MAILBOX_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/shared_memory.h"
  11 #include "cc/base/cc_export.h"
  12 #include "gpu/command_buffer/common/mailbox_holder.h"
  13 #include "ui/gfx/geometry/size.h"
  14
  15 namespace cc {
  16 class SharedBitmap;
  17
  18 // TODO(skaslev, danakj) Rename this class more apropriately since now it
  19 // can hold a shared memory resource as well as a texture mailbox.
  20 class CC_EXPORT TextureMailbox {
  21  public:
  22   TextureMailbox();
  23   explicit TextureMailbox(const gpu::MailboxHolder& mailbox_holder);
  24   TextureMailbox(const gpu::Mailbox& mailbox, uint32 target, uint32 sync_point);
  25   TextureMailbox(const gpu::Mailbox& mailbox,
  26                  uint32 target,
  27                  uint32 sync_point,
  28                  const gfx::Size& size_in_pixels,
  29                  bool allow_overlay);
  30   TextureMailbox(SharedBitmap* shared_bitmap, const gfx::Size& size_in_pixels);
  31
  32   ~TextureMailbox();
  33
  34   bool IsValid() const { return IsTexture() || IsSharedMemory(); }
  35   bool IsTexture() const { return !mailbox_holder_.mailbox.IsZero(); }
  36   bool IsSharedMemory() const { return shared_bitmap_ != NULL; }
  37
  38   bool Equals(const TextureMailbox&) const;
  39
  40   const gpu::Mailbox& mailbox() const { return mailbox_holder_.mailbox; }
  41   const int8* name() const { return mailbox().name; }
  42   uint32 target() const { return mailbox_holder_.texture_target; }
  43   uint32 sync_point() const { return mailbox_holder_.sync_point; }
  44   void set_sync_point(int32 sync_point) {
  45     mailbox_holder_.sync_point = sync_point;
  46   }
  47
  48   bool allow_overlay() const { return allow_overlay_; }
  49   bool nearest_neighbor() const { return nearest_neighbor_; }
  50   void set_nearest_neighbor(bool nearest_neighbor) {
  51     nearest_neighbor_ = nearest_neighbor;
  52   }
  53
  54   // This is valid if allow_overlau() or IsSharedMemory() is true.
  55   gfx::Size size_in_pixels() const { return size_in_pixels_; }
  56
  57   SharedBitmap* shared_bitmap() const { return shared_bitmap_; }
  58   size_t SharedMemorySizeInBytes() const;
  59
  60  private:
  61   gpu::MailboxHolder mailbox_holder_;
  62   SharedBitmap* shared_bitmap_;
  63   gfx::Size size_in_pixels_;
  64   bool allow_overlay_;
  65   bool nearest_neighbor_;
  66 };
  67
  68 }  // namespace cc
  69
  70 #endif  // CC_RESOURCES_TEXTURE_MAILBOX_H_