content/child/child_gpu_memory_buffer_manager.cc

   1 // Copyright 2014 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 "content/child/child_gpu_memory_buffer_manager.h"
   6
   7 #include "content/common/child_process_messages.h"
   8 #include "content/common/generic_shared_memory_id_generator.h"
   9 #include "content/common/gpu/client/gpu_memory_buffer_impl.h"
  10
  11 namespace content {
  12 namespace {
  13
  14 void DeletedGpuMemoryBuffer(ThreadSafeSender* sender,
  15                             gfx::GpuMemoryBufferId id,
  16                             uint32 sync_point) {
  17   TRACE_EVENT0("renderer",
  18                "ChildGpuMemoryBufferManager::DeletedGpuMemoryBuffer");
  19   sender->Send(new ChildProcessHostMsg_DeletedGpuMemoryBuffer(id, sync_point));
  20 }
  21
  22 }  // namespace
  23
  24 ChildGpuMemoryBufferManager::ChildGpuMemoryBufferManager(
  25     ThreadSafeSender* sender)
  26     : sender_(sender) {
  27 }
  28
  29 ChildGpuMemoryBufferManager::~ChildGpuMemoryBufferManager() {
  30 }
  31
  32 scoped_ptr<gfx::GpuMemoryBuffer>
  33 ChildGpuMemoryBufferManager::AllocateGpuMemoryBuffer(const gfx::Size& size,
  34                                                      gfx::BufferFormat format,
  35                                                      gfx::BufferUsage usage) {
  36   TRACE_EVENT2("renderer",
  37                "ChildGpuMemoryBufferManager::AllocateGpuMemoryBuffer",
  38                "width",
  39                size.width(),
  40                "height",
  41                size.height());
  42
  43   gfx::GpuMemoryBufferHandle handle;
  44   IPC::Message* message = new ChildProcessHostMsg_SyncAllocateGpuMemoryBuffer(
  45       content::GetNextGenericSharedMemoryId(), size.width(), size.height(),
  46       format, usage, &handle);
  47   bool success = sender_->Send(message);
  48   if (!success || handle.is_null())
  49     return nullptr;
  50
  51   scoped_ptr<GpuMemoryBufferImpl> buffer(GpuMemoryBufferImpl::CreateFromHandle(
  52       handle, size, format, usage,
  53       base::Bind(&DeletedGpuMemoryBuffer, sender_, handle.id)));
  54   if (!buffer) {
  55     sender_->Send(new ChildProcessHostMsg_DeletedGpuMemoryBuffer(handle.id, 0));
  56     return nullptr;
  57   }
  58
  59   return buffer.Pass();
  60 }
  61
  62 gfx::GpuMemoryBuffer*
  63 ChildGpuMemoryBufferManager::GpuMemoryBufferFromClientBuffer(
  64     ClientBuffer buffer) {
  65   return GpuMemoryBufferImpl::FromClientBuffer(buffer);
  66 }
  67
  68 void ChildGpuMemoryBufferManager::SetDestructionSyncPoint(
  69     gfx::GpuMemoryBuffer* buffer,
  70     uint32 sync_point) {
  71   static_cast<GpuMemoryBufferImpl*>(buffer)
  72       ->set_destruction_sync_point(sync_point);
  73 }
  74
  75 }  // namespace content