content/common/gpu/gpu_messages.h

   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
   3 // found in the LICENSE file.
   4
   5 // Multiply-included message file, hence no include guard here, but see below
   6 // for a much smaller-than-usual include guard section.
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/memory/shared_memory.h"
  12 #include "content/common/content_export.h"
  13 #include "content/common/content_param_traits.h"
  14 #include "content/common/gpu/gpu_memory_uma_stats.h"
  15 #include "content/common/gpu/gpu_process_launch_causes.h"
  16 #include "content/common/gpu/gpu_result_codes.h"
  17 #include "content/public/common/common_param_traits.h"
  18 #include "content/public/common/gpu_memory_stats.h"
  19 #include "gpu/command_buffer/common/capabilities.h"
  20 #include "gpu/command_buffer/common/command_buffer.h"
  21 #include "gpu/command_buffer/common/constants.h"
  22 #include "gpu/command_buffer/common/gpu_memory_allocation.h"
  23 #include "gpu/command_buffer/common/mailbox.h"
  24 #include "gpu/command_buffer/common/value_state.h"
  25 #include "gpu/config/gpu_info.h"
  26 #include "gpu/ipc/gpu_command_buffer_traits.h"
  27 #include "ipc/ipc_channel_handle.h"
  28 #include "ipc/ipc_message_macros.h"
  29 #include "media/base/video_frame.h"
  30 #include "media/video/video_decode_accelerator.h"
  31 #include "media/video/video_encode_accelerator.h"
  32 #include "ui/events/latency_info.h"
  33 #include "ui/gfx/geometry/size.h"
  34 #include "ui/gfx/gpu_memory_buffer.h"
  35 #include "ui/gfx/native_widget_types.h"
  36 #include "ui/gl/gpu_preference.h"
  37
  38 #if defined(OS_ANDROID)
  39 #include "content/common/android/surface_texture_peer.h"
  40 #endif
  41
  42 #undef IPC_MESSAGE_EXPORT
  43 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
  44
  45 #define IPC_MESSAGE_START GpuMsgStart
  46
  47 IPC_ENUM_TRAITS_MAX_VALUE(content::CauseForGpuLaunch,
  48                           content::CAUSE_FOR_GPU_LAUNCH_MAX_ENUM - 1)
  49 IPC_ENUM_TRAITS_MAX_VALUE(content::CreateCommandBufferResult,
  50                           content::CREATE_COMMAND_BUFFER_RESULT_LAST)
  51 IPC_ENUM_TRAITS_MAX_VALUE(gfx::GpuPreference,
  52                           gfx::GpuPreferenceLast)
  53 IPC_ENUM_TRAITS_MAX_VALUE(gfx::SurfaceType,
  54                           gfx::SURFACE_TYPE_LAST)
  55 IPC_ENUM_TRAITS_MAX_VALUE(gpu::MemoryAllocation::PriorityCutoff,
  56                           gpu::MemoryAllocation::CUTOFF_LAST)
  57 IPC_ENUM_TRAITS_MAX_VALUE(gpu::error::ContextLostReason,
  58                           gpu::error::kContextLostReasonLast)
  59 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoEncodeAccelerator::Error,
  60                           media::VideoEncodeAccelerator::kErrorMax)
  61 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoFrame::Format,
  62                           media::VideoFrame::FORMAT_MAX)
  63 IPC_ENUM_TRAITS_MIN_MAX_VALUE(media::VideoCodecProfile,
  64                               media::VIDEO_CODEC_PROFILE_MIN,
  65                               media::VIDEO_CODEC_PROFILE_MAX)
  66 IPC_ENUM_TRAITS_MIN_MAX_VALUE(gpu::CollectInfoResult,
  67                               gpu::kCollectInfoNone,
  68                               gpu::kCollectInfoFatalFailure)
  69 IPC_ENUM_TRAITS_MIN_MAX_VALUE(gpu::VideoCodecProfile,
  70                               gpu::VIDEO_CODEC_PROFILE_MIN,
  71                               gpu::VIDEO_CODEC_PROFILE_MAX)
  72
  73 IPC_STRUCT_BEGIN(GPUCreateCommandBufferConfig)
  74   IPC_STRUCT_MEMBER(int32, share_group_id)
  75   IPC_STRUCT_MEMBER(std::vector<int>, attribs)
  76   IPC_STRUCT_MEMBER(GURL, active_url)
  77   IPC_STRUCT_MEMBER(gfx::GpuPreference, gpu_preference)
  78 IPC_STRUCT_END()
  79
  80 IPC_STRUCT_BEGIN(GpuMsg_CreateGpuMemoryBuffer_Params)
  81   IPC_STRUCT_MEMBER(int32, id)
  82   IPC_STRUCT_MEMBER(gfx::Size, size)
  83   IPC_STRUCT_MEMBER(gfx::GpuMemoryBuffer::Format, format)
  84   IPC_STRUCT_MEMBER(gfx::GpuMemoryBuffer::Usage, usage)
  85   IPC_STRUCT_MEMBER(int32, client_id)
  86   IPC_STRUCT_MEMBER(gfx::PluginWindowHandle, surface_handle)
  87 IPC_STRUCT_END()
  88
  89 IPC_STRUCT_BEGIN(GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params)
  90   IPC_STRUCT_MEMBER(int32, surface_id)
  91   IPC_STRUCT_MEMBER(uint64, surface_handle)
  92   IPC_STRUCT_MEMBER(int32, route_id)
  93   IPC_STRUCT_MEMBER(gfx::Size, size)
  94   IPC_STRUCT_MEMBER(float, scale_factor)
  95   IPC_STRUCT_MEMBER(std::vector<ui::LatencyInfo>, latency_info)
  96 IPC_STRUCT_END()
  97
  98 #if defined(OS_MACOSX)
  99 IPC_STRUCT_BEGIN(AcceleratedSurfaceMsg_BufferPresented_Params)
 100   // If the browser needs framerate throttling based on GPU back-pressure to be
 101   // disabled (e.g, because the NSView isn't visible but tab capture is active),
 102   // then this is set to true.
 103   IPC_STRUCT_MEMBER(bool, disable_throttling)
 104   // If the browser is drawing to the screen, this is the CGL renderer ID of
 105   // the GL context that the brower is using.
 106   IPC_STRUCT_MEMBER(int32, renderer_id)
 107 IPC_STRUCT_END()
 108 #endif
 109
 110 IPC_STRUCT_BEGIN(GPUCommandBufferConsoleMessage)
 111   IPC_STRUCT_MEMBER(int32, id)
 112   IPC_STRUCT_MEMBER(std::string, message)
 113 IPC_STRUCT_END()
 114
 115 #if defined(OS_ANDROID)
 116 IPC_STRUCT_BEGIN(GpuStreamTextureMsg_MatrixChanged_Params)
 117   IPC_STRUCT_MEMBER(float, m00)
 118   IPC_STRUCT_MEMBER(float, m01)
 119   IPC_STRUCT_MEMBER(float, m02)
 120   IPC_STRUCT_MEMBER(float, m03)
 121   IPC_STRUCT_MEMBER(float, m10)
 122   IPC_STRUCT_MEMBER(float, m11)
 123   IPC_STRUCT_MEMBER(float, m12)
 124   IPC_STRUCT_MEMBER(float, m13)
 125   IPC_STRUCT_MEMBER(float, m20)
 126   IPC_STRUCT_MEMBER(float, m21)
 127   IPC_STRUCT_MEMBER(float, m22)
 128   IPC_STRUCT_MEMBER(float, m23)
 129   IPC_STRUCT_MEMBER(float, m30)
 130   IPC_STRUCT_MEMBER(float, m31)
 131   IPC_STRUCT_MEMBER(float, m32)
 132   IPC_STRUCT_MEMBER(float, m33)
 133 IPC_STRUCT_END()
 134 #endif
 135
 136   IPC_STRUCT_TRAITS_BEGIN(gpu::DxDiagNode)
 137   IPC_STRUCT_TRAITS_MEMBER(values)
 138   IPC_STRUCT_TRAITS_MEMBER(children)
 139 IPC_STRUCT_TRAITS_END()
 140
 141 IPC_STRUCT_TRAITS_BEGIN(gpu::GPUInfo::GPUDevice)
 142   IPC_STRUCT_TRAITS_MEMBER(vendor_id)
 143   IPC_STRUCT_TRAITS_MEMBER(device_id)
 144   IPC_STRUCT_TRAITS_MEMBER(active)
 145   IPC_STRUCT_TRAITS_MEMBER(vendor_string)
 146   IPC_STRUCT_TRAITS_MEMBER(device_string)
 147 IPC_STRUCT_TRAITS_END()
 148
 149 IPC_STRUCT_TRAITS_BEGIN(gpu::VideoDecodeAcceleratorSupportedProfile)
 150   IPC_STRUCT_TRAITS_MEMBER(profile)
 151   IPC_STRUCT_TRAITS_MEMBER(max_resolution)
 152   IPC_STRUCT_TRAITS_MEMBER(min_resolution)
 153 IPC_STRUCT_TRAITS_END()
 154
 155 IPC_STRUCT_TRAITS_BEGIN(gpu::VideoEncodeAcceleratorSupportedProfile)
 156   IPC_STRUCT_TRAITS_MEMBER(profile)
 157   IPC_STRUCT_TRAITS_MEMBER(max_resolution)
 158   IPC_STRUCT_TRAITS_MEMBER(max_framerate_numerator)
 159   IPC_STRUCT_TRAITS_MEMBER(max_framerate_denominator)
 160 IPC_STRUCT_TRAITS_END()
 161
 162 IPC_STRUCT_TRAITS_BEGIN(gpu::GPUInfo)
 163   IPC_STRUCT_TRAITS_MEMBER(initialization_time)
 164   IPC_STRUCT_TRAITS_MEMBER(optimus)
 165   IPC_STRUCT_TRAITS_MEMBER(amd_switchable)
 166   IPC_STRUCT_TRAITS_MEMBER(lenovo_dcute)
 167   IPC_STRUCT_TRAITS_MEMBER(gpu)
 168   IPC_STRUCT_TRAITS_MEMBER(secondary_gpus)
 169   IPC_STRUCT_TRAITS_MEMBER(adapter_luid)
 170   IPC_STRUCT_TRAITS_MEMBER(driver_vendor)
 171   IPC_STRUCT_TRAITS_MEMBER(driver_version)
 172   IPC_STRUCT_TRAITS_MEMBER(driver_date)
 173   IPC_STRUCT_TRAITS_MEMBER(pixel_shader_version)
 174   IPC_STRUCT_TRAITS_MEMBER(vertex_shader_version)
 175   IPC_STRUCT_TRAITS_MEMBER(max_msaa_samples)
 176   IPC_STRUCT_TRAITS_MEMBER(machine_model_name)
 177   IPC_STRUCT_TRAITS_MEMBER(machine_model_version)
 178   IPC_STRUCT_TRAITS_MEMBER(gl_version)
 179   IPC_STRUCT_TRAITS_MEMBER(gl_vendor)
 180   IPC_STRUCT_TRAITS_MEMBER(gl_renderer)
 181   IPC_STRUCT_TRAITS_MEMBER(gl_extensions)
 182   IPC_STRUCT_TRAITS_MEMBER(gl_ws_vendor)
 183   IPC_STRUCT_TRAITS_MEMBER(gl_ws_version)
 184   IPC_STRUCT_TRAITS_MEMBER(gl_ws_extensions)
 185   IPC_STRUCT_TRAITS_MEMBER(gl_reset_notification_strategy)
 186   IPC_STRUCT_TRAITS_MEMBER(can_lose_context)
 187   IPC_STRUCT_TRAITS_MEMBER(software_rendering)
 188   IPC_STRUCT_TRAITS_MEMBER(direct_rendering)
 189   IPC_STRUCT_TRAITS_MEMBER(sandboxed)
 190   IPC_STRUCT_TRAITS_MEMBER(process_crash_count)
 191   IPC_STRUCT_TRAITS_MEMBER(basic_info_state)
 192   IPC_STRUCT_TRAITS_MEMBER(context_info_state)
 193 #if defined(OS_WIN)
 194   IPC_STRUCT_TRAITS_MEMBER(dx_diagnostics_info_state)
 195   IPC_STRUCT_TRAITS_MEMBER(dx_diagnostics)
 196 #endif
 197   IPC_STRUCT_TRAITS_MEMBER(video_decode_accelerator_supported_profiles)
 198   IPC_STRUCT_TRAITS_MEMBER(video_encode_accelerator_supported_profiles)
 199 IPC_STRUCT_TRAITS_END()
 200
 201 IPC_STRUCT_TRAITS_BEGIN(content::GPUVideoMemoryUsageStats::ProcessStats)
 202   IPC_STRUCT_TRAITS_MEMBER(video_memory)
 203   IPC_STRUCT_TRAITS_MEMBER(has_duplicates)
 204 IPC_STRUCT_TRAITS_END()
 205
 206 IPC_STRUCT_TRAITS_BEGIN(content::GPUVideoMemoryUsageStats)
 207   IPC_STRUCT_TRAITS_MEMBER(process_map)
 208   IPC_STRUCT_TRAITS_MEMBER(bytes_allocated)
 209   IPC_STRUCT_TRAITS_MEMBER(bytes_allocated_historical_max)
 210 IPC_STRUCT_TRAITS_END()
 211
 212 IPC_STRUCT_TRAITS_BEGIN(content::GPUMemoryUmaStats)
 213   IPC_STRUCT_TRAITS_MEMBER(bytes_allocated_current)
 214   IPC_STRUCT_TRAITS_MEMBER(bytes_allocated_max)
 215   IPC_STRUCT_TRAITS_MEMBER(bytes_limit)
 216 IPC_STRUCT_TRAITS_END()
 217
 218 IPC_STRUCT_TRAITS_BEGIN(gpu::MemoryAllocation)
 219   IPC_STRUCT_TRAITS_MEMBER(bytes_limit_when_visible)
 220   IPC_STRUCT_TRAITS_MEMBER(priority_cutoff_when_visible)
 221 IPC_STRUCT_TRAITS_END()
 222
 223 IPC_STRUCT_TRAITS_BEGIN(gfx::GLSurfaceHandle)
 224   IPC_STRUCT_TRAITS_MEMBER(handle)
 225   IPC_STRUCT_TRAITS_MEMBER(transport_type)
 226   IPC_STRUCT_TRAITS_MEMBER(parent_client_id)
 227 IPC_STRUCT_TRAITS_END()
 228
 229 //------------------------------------------------------------------------------
 230 // GPU Messages
 231 // These are messages from the browser to the GPU process.
 232
 233 // Tells the GPU process to initialize itself. The browser explicitly
 234 // requests this be done so that we are guaranteed that the channel is set
 235 // up between the browser and GPU process before doing any work that might
 236 // potentially crash the GPU process. Detection of the child process
 237 // exiting abruptly is predicated on having the IPC channel set up.
 238 IPC_MESSAGE_CONTROL0(GpuMsg_Initialize)
 239
 240 // Tells the GPU process to create a new channel for communication with a
 241 // given client.  The channel name is returned in a
 242 // GpuHostMsg_ChannelEstablished message.  The client ID is passed so that
 243 // the GPU process reuses an existing channel to that process if it exists.
 244 // This ID is a unique opaque identifier generated by the browser process.
 245 IPC_MESSAGE_CONTROL3(GpuMsg_EstablishChannel,
 246                      int /* client_id */,
 247                      bool /* share_context */,
 248                      bool /* allow_future_sync_points */)
 249
 250 // Tells the GPU process to close the channel identified by IPC channel
 251 // handle.  If no channel can be identified, do nothing.
 252 IPC_MESSAGE_CONTROL1(GpuMsg_CloseChannel,
 253                      IPC::ChannelHandle /* channel_handle */)
 254
 255 // Tells the GPU process to create a new command buffer that renders directly
 256 // to a native view. A corresponding GpuCommandBufferStub is created.
 257 IPC_MESSAGE_CONTROL5(GpuMsg_CreateViewCommandBuffer,
 258                      gfx::GLSurfaceHandle, /* compositing_surface */
 259                      int32, /* surface_id */
 260                      int32, /* client_id */
 261                      GPUCreateCommandBufferConfig, /* init_params */
 262                      int32 /* route_id */)
 263
 264 // Tells the GPU process to create a new gpu memory buffer.
 265 IPC_MESSAGE_CONTROL1(GpuMsg_CreateGpuMemoryBuffer,
 266                      GpuMsg_CreateGpuMemoryBuffer_Params)
 267
 268 // Tells the GPU process to destroy buffer.
 269 IPC_MESSAGE_CONTROL3(GpuMsg_DestroyGpuMemoryBuffer,
 270                      gfx::GpuMemoryBufferId, /* id */
 271                      int32, /* client_id */
 272                      int32 /* sync_point */)
 273
 274 // Tells the GPU process to create a context for collecting graphics card
 275 // information.
 276 IPC_MESSAGE_CONTROL0(GpuMsg_CollectGraphicsInfo)
 277
 278 // Tells the GPU process to report video_memory information for the task manager
 279 IPC_MESSAGE_CONTROL0(GpuMsg_GetVideoMemoryUsageStats)
 280
 281 #if defined(OS_MACOSX)
 282 // Tells the GPU process that the browser process has handled the swap
 283 // buffers or post sub-buffer request.
 284 IPC_MESSAGE_ROUTED1(AcceleratedSurfaceMsg_BufferPresented,
 285                     AcceleratedSurfaceMsg_BufferPresented_Params)
 286 #endif
 287
 288 // Tells the GPU process to wake up the GPU because we're about to draw.
 289 IPC_MESSAGE_ROUTED0(AcceleratedSurfaceMsg_WakeUpGpu)
 290
 291 // Tells the GPU process to remove all contexts.
 292 IPC_MESSAGE_CONTROL0(GpuMsg_Clean)
 293
 294 // Tells the GPU process to crash.
 295 IPC_MESSAGE_CONTROL0(GpuMsg_Crash)
 296
 297 // Tells the GPU process to hang.
 298 IPC_MESSAGE_CONTROL0(GpuMsg_Hang)
 299
 300 // Tells the GPU process to disable the watchdog thread.
 301 IPC_MESSAGE_CONTROL0(GpuMsg_DisableWatchdog)
 302
 303 // Tells the GPU process that the browser has seen a GPU switch.
 304 IPC_MESSAGE_CONTROL0(GpuMsg_GpuSwitched)
 305
 306 // Tells the GPU process to delete the default_offscreen surface. It will also
 307 // close the display and any other resources when the last GL surface is
 308 // deleted. GPU process will respond with GphHosMsg_ResourcesRelinquished.
 309 IPC_MESSAGE_CONTROL0(GpuMsg_RelinquishResources)
 310
 311 // Sends an input event to the gpu service.
 312 IPC_MESSAGE_CONTROL3(GpuMsg_UpdateValueState,
 313                      int, /* client_id */
 314                      unsigned int, /* target */
 315                      gpu::ValueState /* valuestate */)
 316
 317 //------------------------------------------------------------------------------
 318 // GPU Host Messages
 319 // These are messages to the browser.
 320
 321 // A renderer sends this when it wants to create a connection to the GPU
 322 // process. The browser will create the GPU process if necessary, and will
 323 // return a handle to the channel via a GpuChannelEstablished message.
 324 IPC_SYNC_MESSAGE_CONTROL1_3(GpuHostMsg_EstablishGpuChannel,
 325                             content::CauseForGpuLaunch,
 326                             int /* client id */,
 327                             IPC::ChannelHandle /* handle to channel */,
 328                             gpu::GPUInfo /* stats about GPU process*/)
 329
 330 // A renderer sends this to the browser process when it wants to
 331 // create a GL context associated with the given view_id.
 332 IPC_SYNC_MESSAGE_CONTROL3_1(GpuHostMsg_CreateViewCommandBuffer,
 333                             int32, /* surface_id */
 334                             GPUCreateCommandBufferConfig, /* init_params */
 335                             int32, /* route_id */
 336                             content::CreateCommandBufferResult /* result */)
 337
 338 // Response from GPU to a GputMsg_Initialize message.
 339 IPC_MESSAGE_CONTROL2(GpuHostMsg_Initialized,
 340                      bool /* result */,
 341                      ::gpu::GPUInfo /* gpu_info */)
 342
 343 // Response from GPU to a GpuHostMsg_EstablishChannel message.
 344 IPC_MESSAGE_CONTROL1(GpuHostMsg_ChannelEstablished,
 345                      IPC::ChannelHandle /* channel_handle */)
 346
 347 // Message from GPU to notify to destroy the channel.
 348 IPC_MESSAGE_CONTROL1(GpuHostMsg_DestroyChannel,
 349                      int32 /* client_id */)
 350
 351 // Message to cache the given shader information.
 352 IPC_MESSAGE_CONTROL3(GpuHostMsg_CacheShader,
 353                      int32 /* client_id */,
 354                      std::string /* key */,
 355                      std::string /* shader */)
 356
 357 // Message to the GPU that a shader was loaded from disk.
 358 IPC_MESSAGE_CONTROL1(GpuMsg_LoadedShader,
 359                      std::string /* encoded shader */)
 360
 361 // Respond from GPU to a GpuMsg_CreateViewCommandBuffer message.
 362 IPC_MESSAGE_CONTROL1(GpuHostMsg_CommandBufferCreated,
 363                      content::CreateCommandBufferResult /* result */)
 364
 365 // Request from GPU to free the browser resources associated with the
 366 // command buffer.
 367 IPC_MESSAGE_CONTROL1(GpuHostMsg_DestroyCommandBuffer,
 368                      int32 /* surface_id */)
 369
 370 // Response from GPU to a GpuMsg_CreateGpuMemoryBuffer message.
 371 IPC_MESSAGE_CONTROL1(GpuHostMsg_GpuMemoryBufferCreated,
 372                      gfx::GpuMemoryBufferHandle /* handle */)
 373
 374 // Response from GPU to a GpuMsg_CollectGraphicsInfo.
 375 IPC_MESSAGE_CONTROL1(GpuHostMsg_GraphicsInfoCollected,
 376                      gpu::GPUInfo /* GPU logging stats */)
 377
 378 // Response from GPU to a GpuMsg_GetVideoMemory.
 379 IPC_MESSAGE_CONTROL1(GpuHostMsg_VideoMemoryUsageStats,
 380                      content::GPUVideoMemoryUsageStats /* GPU memory stats */)
 381
 382 // Message from GPU to add a GPU log message to the about:gpu page.
 383 IPC_MESSAGE_CONTROL3(GpuHostMsg_OnLogMessage,
 384                      int /*severity*/,
 385                      std::string /* header */,
 386                      std::string /* message */)
 387
 388 // Tells the browser that a new accelerated surface was initialized.
 389 IPC_MESSAGE_CONTROL2(GpuHostMsg_AcceleratedSurfaceInitialized,
 390                      int32 /* surface_id */,
 391                      int32 /* route_id */)
 392
 393 // Same as above with a rect of the part of the surface that changed.
 394 IPC_MESSAGE_CONTROL1(GpuHostMsg_AcceleratedSurfaceBuffersSwapped,
 395                      GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params)
 396
 397 IPC_MESSAGE_CONTROL1(GpuHostMsg_DidCreateOffscreenContext,
 398                      GURL /* url */)
 399
 400 IPC_MESSAGE_CONTROL3(GpuHostMsg_DidLoseContext,
 401                      bool /* offscreen */,
 402                      gpu::error::ContextLostReason /* reason */,
 403                      GURL /* url */)
 404
 405 IPC_MESSAGE_CONTROL1(GpuHostMsg_DidDestroyOffscreenContext,
 406                      GURL /* url */)
 407
 408 // Tells the browser about GPU memory usage statistics for UMA logging.
 409 IPC_MESSAGE_CONTROL1(GpuHostMsg_GpuMemoryUmaStats,
 410                      content::GPUMemoryUmaStats /* GPU memory UMA stats */)
 411
 412 // Response to GpuMsg_RelinquishResources.
 413 IPC_MESSAGE_CONTROL0(GpuHostMsg_ResourcesRelinquished)
 414
 415 // Tells the browser that a context has subscribed to a new target and
 416 // the browser should start sending the corresponding information
 417 IPC_MESSAGE_CONTROL2(GpuHostMsg_AddSubscription,
 418                      int32 /* client_id */,
 419                      unsigned int /* target */)
 420
 421 // Tells the browser that no contexts are subscribed to the target anymore
 422 // so the browser should stop sending the corresponding information
 423 IPC_MESSAGE_CONTROL2(GpuHostMsg_RemoveSubscription,
 424                      int32 /* client_id */,
 425                      unsigned int /* target */)
 426
 427 //------------------------------------------------------------------------------
 428 // GPU Channel Messages
 429 // These are messages from a renderer process to the GPU process.
 430
 431 // Tells the GPU process to create a new command buffer that renders to an
 432 // offscreen frame buffer.
 433 IPC_SYNC_MESSAGE_CONTROL3_1(GpuChannelMsg_CreateOffscreenCommandBuffer,
 434                             gfx::Size, /* size */
 435                             GPUCreateCommandBufferConfig, /* init_params */
 436                             int32, /* route_id */
 437                             bool /* succeeded */)
 438
 439 // The CommandBufferProxy sends this to the GpuCommandBufferStub in its
 440 // destructor, so that the stub deletes the actual CommandBufferService
 441 // object that it's hosting.
 442 IPC_SYNC_MESSAGE_CONTROL1_0(GpuChannelMsg_DestroyCommandBuffer,
 443                             int32 /* instance_id */)
 444
 445 #if defined(OS_ANDROID)
 446 //------------------------------------------------------------------------------
 447 // Stream Texture Messages
 448 // Tells the GPU process create and send the java surface texture object to
 449 // the renderer process through the binder thread.
 450 IPC_MESSAGE_ROUTED2(GpuStreamTextureMsg_EstablishPeer,
 451                     int32, /* primary_id */
 452                     int32  /* secondary_id */)
 453
 454 // Tells the GPU process to set the size of StreamTexture from the given
 455 // stream Id.
 456 IPC_MESSAGE_ROUTED1(GpuStreamTextureMsg_SetSize,
 457                     gfx::Size /* size */)
 458
 459 // Tells the service-side instance to start sending frame available
 460 // notifications.
 461 IPC_MESSAGE_ROUTED0(GpuStreamTextureMsg_StartListening)
 462
 463 // Inform the renderer that a new frame is available.
 464 IPC_MESSAGE_ROUTED0(GpuStreamTextureMsg_FrameAvailable)
 465
 466 // Inform the renderer process that the transform matrix has changed.
 467 IPC_MESSAGE_ROUTED1(GpuStreamTextureMsg_MatrixChanged,
 468                     GpuStreamTextureMsg_MatrixChanged_Params /* params */)
 469 #endif
 470
 471 //------------------------------------------------------------------------------
 472 // GPU Command Buffer Messages
 473 // These are messages between a renderer process to the GPU process relating to
 474 // a single OpenGL context.
 475 // Initialize a command buffer with the given number of command entries.
 476 // Returns the shared memory handle for the command buffer mapped to the
 477 // calling process.
 478 IPC_SYNC_MESSAGE_ROUTED1_2(GpuCommandBufferMsg_Initialize,
 479                            base::SharedMemoryHandle /* shared_state */,
 480                            bool /* result */,
 481                            gpu::Capabilities /* capabilities */)
 482
 483 // Sets the shared memory buffer used for commands.
 484 IPC_SYNC_MESSAGE_ROUTED1_0(GpuCommandBufferMsg_SetGetBuffer,
 485                            int32 /* shm_id */)
 486
 487 // Produces the front buffer into a mailbox. This allows another context to draw
 488 // the output of this context.
 489 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_ProduceFrontBuffer,
 490                     gpu::Mailbox /* mailbox */)
 491
 492 // Wait until the token is in a specific range, inclusive.
 493 IPC_SYNC_MESSAGE_ROUTED2_1(GpuCommandBufferMsg_WaitForTokenInRange,
 494                            int32 /* start */,
 495                            int32 /* end */,
 496                            gpu::CommandBuffer::State /* state */)
 497
 498 // Wait until the get offset is in a specific range, inclusive.
 499 IPC_SYNC_MESSAGE_ROUTED2_1(GpuCommandBufferMsg_WaitForGetOffsetInRange,
 500                            int32 /* start */,
 501                            int32 /* end */,
 502                            gpu::CommandBuffer::State /* state */)
 503
 504 // Asynchronously synchronize the put and get offsets of both processes.
 505 // Caller passes its current put offset. Current state (including get offset)
 506 // is returned in shared memory. The input latency info for the current
 507 // frame is also sent to the GPU process.
 508 IPC_MESSAGE_ROUTED3(GpuCommandBufferMsg_AsyncFlush,
 509                     int32 /* put_offset */,
 510                     uint32 /* flush_count */,
 511                     std::vector<ui::LatencyInfo> /* latency_info */)
 512
 513 // Asynchronously process any commands known to the GPU process. This is only
 514 // used in the event that a channel is unscheduled and needs to be flushed
 515 // again to process any commands issued subsequent to unscheduling. The GPU
 516 // process actually sends it (deferred) to itself.
 517 IPC_MESSAGE_ROUTED0(GpuCommandBufferMsg_Rescheduled)
 518
 519 // Sent by the GPU process to display messages in the console.
 520 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_ConsoleMsg,
 521                     GPUCommandBufferConsoleMessage /* msg */)
 522
 523 // Register an existing shared memory transfer buffer. The id that can be
 524 // used to identify the transfer buffer from a command buffer.
 525 IPC_MESSAGE_ROUTED3(GpuCommandBufferMsg_RegisterTransferBuffer,
 526                     int32 /* id */,
 527                     base::SharedMemoryHandle /* transfer_buffer */,
 528                     uint32 /* size */)
 529
 530 // Destroy a previously created transfer buffer.
 531 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_DestroyTransferBuffer,
 532                     int32 /* id */)
 533
 534 // Create and initialize a hardware video decoder using the specified route_id.
 535 // Created decoders should be freed with AcceleratedVideoDecoderMsg_Destroy when
 536 // no longer needed.
 537 IPC_SYNC_MESSAGE_ROUTED2_1(GpuCommandBufferMsg_CreateVideoDecoder,
 538                            media::VideoCodecProfile /* profile */,
 539                            int32, /* route_id */
 540                            bool /* succeeded */)
 541
 542 // Create and initialize a hardware video encoder using the specified route_id.
 543 // Created encoders should be freed with AcceleratedVideoEncoderMsg_Destroy when
 544 // no longer needed.
 545 IPC_SYNC_MESSAGE_ROUTED5_1(GpuCommandBufferMsg_CreateVideoEncoder,
 546                            media::VideoFrame::Format /* input_format */,
 547                            gfx::Size /* input_visible_size */,
 548                            media::VideoCodecProfile /* output_profile */,
 549                            uint32 /* initial_bitrate */,
 550                            int32, /* route_id */
 551                            bool /* succeeded */)
 552
 553 // Tells the proxy that there was an error and the command buffer had to be
 554 // destroyed for some reason.
 555 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_Destroyed,
 556                     gpu::error::ContextLostReason /* reason */)
 557
 558 // Tells the browser that SwapBuffers returned and passes latency info
 559 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_SwapBuffersCompleted,
 560                     std::vector<ui::LatencyInfo> /* latency_info */)
 561
 562 // Tells the browser about updated parameters for vsync alignment.
 563 IPC_MESSAGE_ROUTED2(GpuCommandBufferMsg_UpdateVSyncParameters,
 564                     base::TimeTicks /* timebase */,
 565                     base::TimeDelta /* interval */)
 566
 567 // Send to stub on surface visibility change.
 568 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_SetSurfaceVisible, bool /* visible */)
 569
 570 // Sent to proxy when the gpu memory manager changes its memory allocation.
 571 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_SetMemoryAllocation,
 572                     gpu::MemoryAllocation /* allocation */)
 573
 574 // Sent to stub when proxy is assigned a memory allocation changed callback.
 575 IPC_MESSAGE_ROUTED1(
 576     GpuCommandBufferMsg_SetClientHasMemoryAllocationChangedCallback,
 577     bool /* has_callback */)
 578
 579 // Inserts a sync point into the channel. This is handled on the IO thread, so
 580 // can be expected to be reasonably fast, but the sync point is actually
 581 // retired in order with respect to the other calls. The sync point is shared
 582 // across channels.
 583 IPC_SYNC_MESSAGE_ROUTED1_1(GpuCommandBufferMsg_InsertSyncPoint,
 584                            bool /* retire */,
 585                            uint32 /* sync_point */)
 586
 587 // Retires the sync point. Note: this message is not sent explicitly by the
 588 // renderer, but is synthesized by the GPU process.
 589 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_RetireSyncPoint,
 590                     uint32 /* sync_point */)
 591
 592 // Makes this command buffer signal when a sync point is reached, by sending
 593 // back a GpuCommandBufferMsg_SignalSyncPointAck message with the same
 594 // signal_id.
 595 IPC_MESSAGE_ROUTED2(GpuCommandBufferMsg_SignalSyncPoint,
 596                     uint32 /* sync_point */,
 597                     uint32 /* signal_id */)
 598
 599 // Response to GpuCommandBufferMsg_SignalSyncPoint.
 600 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_SignalSyncPointAck,
 601                     uint32 /* signal_id */)
 602
 603 // Makes this command buffer signal when a query is reached, by sending
 604 // back a GpuCommandBufferMsg_SignalSyncPointAck message with the same
 605 // signal_id.
 606 IPC_MESSAGE_ROUTED2(GpuCommandBufferMsg_SignalQuery,
 607                     uint32 /* query */,
 608                     uint32 /* signal_id */)
 609
 610 // Create an image from an existing gpu memory buffer. The id that can be
 611 // used to identify the image from a command buffer.
 612 IPC_MESSAGE_ROUTED5(GpuCommandBufferMsg_CreateImage,
 613                     int32 /* id */,
 614                     gfx::GpuMemoryBufferHandle /* gpu_memory_buffer */,
 615                     gfx::Size /* size */,
 616                     gfx::GpuMemoryBuffer::Format /* format */,
 617                     uint32 /* internalformat */)
 618
 619 // Destroy a previously created image.
 620 IPC_MESSAGE_ROUTED1(GpuCommandBufferMsg_DestroyImage,
 621                     int32 /* id */)
 622
 623 // Attaches an external image stream to the client texture.
 624 IPC_SYNC_MESSAGE_ROUTED2_1(GpuCommandBufferMsg_CreateStreamTexture,
 625                            uint32, /* client_texture_id */
 626                            int32, /* stream_id */
 627                            bool /* succeeded */)
 628
 629 //------------------------------------------------------------------------------
 630 // Accelerated Video Decoder Messages
 631 // These messages are sent from Renderer process to GPU process.
 632
 633 // Send input buffer for decoding.
 634 IPC_MESSAGE_ROUTED3(AcceleratedVideoDecoderMsg_Decode,
 635                     base::SharedMemoryHandle, /* input_buffer_handle */
 636                     int32, /* bitstream_buffer_id */
 637                     uint32) /* size */
 638
 639 // Sent from Renderer process to the GPU process to give the texture IDs for
 640 // the textures the decoder will use for output.
 641 IPC_MESSAGE_ROUTED2(AcceleratedVideoDecoderMsg_AssignPictureBuffers,
 642                     std::vector<int32>,  /* Picture buffer ID */
 643                     std::vector<uint32>) /* Texture ID */
 644
 645 // Send from Renderer process to the GPU process to recycle the given picture
 646 // buffer for further decoding.
 647 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderMsg_ReusePictureBuffer,
 648                     int32) /* Picture buffer ID */
 649
 650 // Send flush request to the decoder.
 651 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderMsg_Flush)
 652
 653 // Send reset request to the decoder.
 654 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderMsg_Reset)
 655
 656 // Send destroy request to the decoder.
 657 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderMsg_Destroy)
 658
 659 //------------------------------------------------------------------------------
 660 // Accelerated Video Decoder Host Messages
 661 // These messages are sent from GPU process to Renderer process.
 662 // Inform AcceleratedVideoDecoderHost that AcceleratedVideoDecoder has been
 663 // created.
 664
 665 // Accelerated video decoder has consumed input buffer from transfer buffer.
 666 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_BitstreamBufferProcessed,
 667                     int32) /* Processed buffer ID */
 668
 669 // Allocate video frames for output of the hardware video decoder.
 670 IPC_MESSAGE_ROUTED3(
 671     AcceleratedVideoDecoderHostMsg_ProvidePictureBuffers,
 672     int32, /* Number of video frames to generate */
 673     gfx::Size, /* Requested size of buffer */
 674     uint32 ) /* Texture target */
 675
 676 // Decoder reports that a picture is ready and buffer does not need to be passed
 677 // back to the decoder.
 678 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_DismissPictureBuffer,
 679                     int32) /* Picture buffer ID */
 680
 681 // Decoder reports that a picture is ready.
 682 IPC_MESSAGE_ROUTED4(AcceleratedVideoDecoderHostMsg_PictureReady,
 683                     int32,     /* Picture buffer ID */
 684                     int32,     /* Bitstream buffer ID */
 685                     gfx::Rect, /* Visible rectangle */
 686                     bool)      /* Buffer is HW overlay capable */
 687
 688 // Confirm decoder has been flushed.
 689 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_FlushDone)
 690
 691 // Confirm decoder has been reset.
 692 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_ResetDone)
 693
 694 // Video decoder has encountered an error.
 695 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_ErrorNotification,
 696                     uint32) /* Error ID */
 697
 698 //------------------------------------------------------------------------------
 699 // Accelerated Video Encoder Messages
 700 // These messages are sent from the Renderer process to GPU process.
 701
 702 // Queue a input buffer to the encoder to encode. |frame_id| will be returned by
 703 // AcceleratedVideoEncoderHostMsg_NotifyInputDone.
 704 IPC_MESSAGE_ROUTED5(AcceleratedVideoEncoderMsg_Encode,
 705                     int32 /* frame_id */,
 706                     base::SharedMemoryHandle /* buffer_handle */,
 707                     uint32 /* buffer_offset */,
 708                     uint32 /* buffer_size */,
 709                     bool /* force_keyframe */)
 710
 711 // Queue a buffer to the encoder for use in returning output.  |buffer_id| will
 712 // be returned by AcceleratedVideoEncoderHostMsg_BitstreamBufferReady.
 713 IPC_MESSAGE_ROUTED3(AcceleratedVideoEncoderMsg_UseOutputBitstreamBuffer,
 714                     int32 /* buffer_id */,
 715                     base::SharedMemoryHandle /* buffer_handle */,
 716                     uint32 /* buffer_size */)
 717
 718 // Request a runtime encoding parameter change.
 719 IPC_MESSAGE_ROUTED2(AcceleratedVideoEncoderMsg_RequestEncodingParametersChange,
 720                     uint32 /* bitrate */,
 721                     uint32 /* framerate */)
 722
 723 //------------------------------------------------------------------------------
 724 // Accelerated Video Encoder Host Messages
 725 // These messages are sent from GPU process to Renderer process.
 726
 727 // Notify renderer of the input/output buffer requirements of the encoder.
 728 IPC_MESSAGE_ROUTED3(AcceleratedVideoEncoderHostMsg_RequireBitstreamBuffers,
 729                     uint32 /* input_count */,
 730                     gfx::Size /* input_coded_size */,
 731                     uint32 /* output_buffer_size */)
 732
 733 // Notify the renderer that the encoder has finished using an input buffer.
 734 // There is no congruent entry point in the media::VideoEncodeAccelerator
 735 // interface, in VEA this same done condition is indicated by dropping the
 736 // reference to the media::VideoFrame passed to VEA::Encode().
 737 IPC_MESSAGE_ROUTED1(AcceleratedVideoEncoderHostMsg_NotifyInputDone,
 738                     int32 /* frame_id */)
 739
 740 // Notify the renderer that an output buffer has been filled with encoded data.
 741 IPC_MESSAGE_ROUTED3(AcceleratedVideoEncoderHostMsg_BitstreamBufferReady,
 742                     int32 /* bitstream_buffer_id */,
 743                     uint32 /* payload_size */,
 744                     bool /* key_frame */)
 745
 746 // Report error condition.
 747 IPC_MESSAGE_ROUTED1(AcceleratedVideoEncoderHostMsg_NotifyError,
 748                     media::VideoEncodeAccelerator::Error /* error */)
 749
 750 // Send destroy request to the encoder.
 751 IPC_MESSAGE_ROUTED0(AcceleratedVideoEncoderMsg_Destroy)