src/content/browser/gpu/gpu_memory_buffer_factory_host_impl.cc

   1 // Copyright (c) 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/browser/gpu/gpu_memory_buffer_factory_host_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "content/browser/gpu/gpu_process_host.h"
   9 #include "content/public/browser/browser_thread.h"
  10 #include "ui/gfx/gpu_memory_buffer.h"
  11
  12 namespace content {
  13
  14 GpuMemoryBufferFactoryHostImpl::GpuMemoryBufferFactoryHostImpl()
  15     : gpu_host_id_(0), next_create_gpu_memory_buffer_request_id_(0) {
  16 }
  17
  18 GpuMemoryBufferFactoryHostImpl::~GpuMemoryBufferFactoryHostImpl() {
  19 }
  20
  21 void GpuMemoryBufferFactoryHostImpl::CreateGpuMemoryBuffer(
  22     const gfx::GpuMemoryBufferHandle& handle,
  23     const gfx::Size& size,
  24     unsigned internalformat,
  25     unsigned usage,
  26     const CreateGpuMemoryBufferCallback& callback) {
  27   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  28
  29   GpuProcessHost* host = GpuProcessHost::FromID(gpu_host_id_);
  30   if (!host) {
  31     callback.Run(gfx::GpuMemoryBufferHandle());
  32     return;
  33   }
  34
  35   uint32 request_id = next_create_gpu_memory_buffer_request_id_++;
  36   create_gpu_memory_buffer_requests_[request_id] = callback;
  37
  38   host->CreateGpuMemoryBuffer(
  39       handle,
  40       size,
  41       internalformat,
  42       usage,
  43       base::Bind(&GpuMemoryBufferFactoryHostImpl::OnGpuMemoryBufferCreated,
  44                  base::Unretained(this),
  45                  request_id));
  46 }
  47
  48 void GpuMemoryBufferFactoryHostImpl::DestroyGpuMemoryBuffer(
  49     const gfx::GpuMemoryBufferHandle& handle,
  50     int32 sync_point) {
  51   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  52
  53   GpuProcessHost* host = GpuProcessHost::FromID(gpu_host_id_);
  54   if (!host)
  55     return;
  56
  57   host->DestroyGpuMemoryBuffer(handle, sync_point);
  58 }
  59
  60 void GpuMemoryBufferFactoryHostImpl::OnGpuMemoryBufferCreated(
  61     uint32 request_id,
  62     const gfx::GpuMemoryBufferHandle& handle) {
  63   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  64
  65   CreateGpuMemoryBufferCallbackMap::iterator iter =
  66       create_gpu_memory_buffer_requests_.find(request_id);
  67   DCHECK(iter != create_gpu_memory_buffer_requests_.end());
  68   iter->second.Run(handle);
  69   create_gpu_memory_buffer_requests_.erase(iter);
  70 }
  71
  72 }  // namespace content