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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef UI_SURFACE_TRANSPORT_DIB_H_ | 5 #ifndef UI_SURFACE_TRANSPORT_DIB_H_ |
| 6 #define UI_SURFACE_TRANSPORT_DIB_H_ | 6 #define UI_SURFACE_TRANSPORT_DIB_H_ |
| 7 | 7 |
| 8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
| 9 #include "ui/surface/surface_export.h" | 9 #include "ui/surface/surface_export.h" |
| 10 | 10 |
| 11 #if !defined(TOOLKIT_GTK) | 11 #if !defined(TOOLKIT_GTK) |
| 12 #include "base/memory/shared_memory.h" | 12 #include "base/memory/shared_memory.h" |
| 13 #endif | 13 #endif |
| 14 | 14 |
| 15 #if defined(OS_WIN) | 15 #if defined(OS_WIN) |
| 16 #include <windows.h> | 16 #include <windows.h> |
| 17 #elif defined(TOOLKIT_GTK) | 17 #elif defined(TOOLKIT_GTK) |
| 18 #include "ui/base/x/x11_util.h" | 18 #include "ui/base/x/x11_util.h" |
| 19 #include "ui/gfx/x/x11_types.h" |
| 19 #endif | 20 #endif |
| 20 | 21 |
| 21 class SkCanvas; | 22 class SkCanvas; |
| 22 | 23 |
| 23 // ----------------------------------------------------------------------------- | 24 // ----------------------------------------------------------------------------- |
| 24 // A TransportDIB is a block of memory that is used to transport pixels | 25 // A TransportDIB is a block of memory that is used to transport pixels |
| 25 // between processes: from the renderer process to the browser, and | 26 // between processes: from the renderer process to the browser, and |
| 26 // between renderer and plugin processes. | 27 // between renderer and plugin processes. |
| 27 // ----------------------------------------------------------------------------- | 28 // ----------------------------------------------------------------------------- |
| 28 class SURFACE_EXPORT TransportDIB { | 29 class SURFACE_EXPORT TransportDIB { |
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| 182 // on the wire. | 183 // on the wire. |
| 183 Id id() const; | 184 Id id() const; |
| 184 | 185 |
| 185 // Return a handle to the underlying shared memory. This can be sent over the | 186 // Return a handle to the underlying shared memory. This can be sent over the |
| 186 // wire to give this transport DIB to another process. | 187 // wire to give this transport DIB to another process. |
| 187 Handle handle() const; | 188 Handle handle() const; |
| 188 | 189 |
| 189 #if defined(TOOLKIT_GTK) | 190 #if defined(TOOLKIT_GTK) |
| 190 // Map the shared memory into the X server and return an id for the shared | 191 // Map the shared memory into the X server and return an id for the shared |
| 191 // segment. | 192 // segment. |
| 192 XID MapToX(Display* connection); | 193 XID MapToX(XDisplay* connection); |
| 193 | 194 |
| 194 void IncreaseInFlightCounter() { inflight_counter_++; } | 195 void IncreaseInFlightCounter() { inflight_counter_++; } |
| 195 // Decreases the inflight counter, and deletes the transport DIB if it is | 196 // Decreases the inflight counter, and deletes the transport DIB if it is |
| 196 // detached. | 197 // detached. |
| 197 void DecreaseInFlightCounter(); | 198 void DecreaseInFlightCounter(); |
| 198 | 199 |
| 199 // Deletes this transport DIB and detaches the shared memory once the | 200 // Deletes this transport DIB and detaches the shared memory once the |
| 200 // |inflight_counter_| is zero. | 201 // |inflight_counter_| is zero. |
| 201 void Detach(); | 202 void Detach(); |
| 202 #endif | 203 #endif |
| 203 | 204 |
| 204 private: | 205 private: |
| 205 TransportDIB(); | 206 TransportDIB(); |
| 206 | 207 |
| 207 // Verifies that the dib can hold a canvas of the requested dimensions. | 208 // Verifies that the dib can hold a canvas of the requested dimensions. |
| 208 bool VerifyCanvasSize(int w, int h); | 209 bool VerifyCanvasSize(int w, int h); |
| 209 | 210 |
| 210 #if defined(TOOLKIT_GTK) | 211 #if defined(TOOLKIT_GTK) |
| 211 Id key_; // SysV shared memory id | 212 Id key_; // SysV shared memory id |
| 212 void* address_; // mapped address | 213 void* address_; // mapped address |
| 213 XSharedMemoryId x_shm_; // X id for the shared segment | 214 XSharedMemoryId x_shm_; // X id for the shared segment |
| 214 Display* display_; // connection to the X server | 215 XDisplay* display_; // connection to the X server |
| 215 size_t inflight_counter_; // How many requests to the X server are in flight | 216 size_t inflight_counter_; // How many requests to the X server are in flight |
| 216 bool detached_; // If true, delete the transport DIB when it is idle | 217 bool detached_; // If true, delete the transport DIB when it is idle |
| 217 #else | 218 #else |
| 218 explicit TransportDIB(base::SharedMemoryHandle dib); | 219 explicit TransportDIB(base::SharedMemoryHandle dib); |
| 219 base::SharedMemory shared_memory_; | 220 base::SharedMemory shared_memory_; |
| 220 uint32 sequence_num_; | 221 uint32 sequence_num_; |
| 221 #endif | 222 #endif |
| 222 size_t size_; // length, in bytes | 223 size_t size_; // length, in bytes |
| 223 | 224 |
| 224 DISALLOW_COPY_AND_ASSIGN(TransportDIB); | 225 DISALLOW_COPY_AND_ASSIGN(TransportDIB); |
| 225 }; | 226 }; |
| 226 | 227 |
| 227 #endif // UI_SURFACE_TRANSPORT_DIB_H_ | 228 #endif // UI_SURFACE_TRANSPORT_DIB_H_ |
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