ppb_buffer_proxy.cc revision 5821806d5e7f356e8fa4b058a389a808ea183019
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/ppb_buffer_proxy.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <vector> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "build/build_config.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/pp_completion_callback.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/pp_errors.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/pp_resource.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/c/dev/ppb_buffer_dev.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/host_dispatcher.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/plugin_dispatcher.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/proxy/ppapi_messages.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/thunk/enter.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/thunk/ppb_buffer_trusted_api.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/thunk/resource_creation_api.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ppapi/thunk/thunk.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace ppapi { 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace proxy { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Buffer::Buffer(const HostResource& resource, 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const base::SharedMemoryHandle& shm_handle, 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t size) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : Resource(OBJECT_IS_PROXY, resource), 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shm_(shm_handle, false), 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_(size), 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) map_count_(0) { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Buffer::~Buffer() { 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Unmap(); 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)thunk::PPB_Buffer_API* Buffer::AsPPB_Buffer_API() { 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return this; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PP_Bool Buffer::Describe(uint32_t* size_in_bytes) { 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *size_in_bytes = size_; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return PP_TRUE; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PP_Bool Buffer::IsMapped() { 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return PP_FromBool(map_count_ > 0); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void* Buffer::Map() { 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (map_count_++ == 0) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shm_.Map(size_); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return shm_.memory(); 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Buffer::Unmap() { 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (--map_count_ == 0) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shm_.Unmap(); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PPB_Buffer_Proxy::PPB_Buffer_Proxy(Dispatcher* dispatcher) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : InterfaceProxy(dispatcher) { 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PPB_Buffer_Proxy::~PPB_Buffer_Proxy() { 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PP_Resource PPB_Buffer_Proxy::CreateProxyResource(PP_Instance instance, 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t size) { 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!dispatcher) 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HostResource result; 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ppapi::proxy::SerializedHandle shm_handle; 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dispatcher->Send(new PpapiHostMsg_PPBBuffer_Create( 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) API_ID_PPB_BUFFER, instance, size, &result, &shm_handle)); 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (result.is_null() || !shm_handle.IsHandleValid() || 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) !shm_handle.is_shmem()) 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AddProxyResource(result, shm_handle.shmem(), size); 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PP_Resource PPB_Buffer_Proxy::AddProxyResource( 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const HostResource& resource, 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::SharedMemoryHandle shm_handle, 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t size) { 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (new Buffer(resource, shm_handle, size))->GetReference(); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool PPB_Buffer_Proxy::OnMessageReceived(const IPC::Message& msg) { 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool handled = true; 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_BEGIN_MESSAGE_MAP(PPB_Buffer_Proxy, msg) 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBBuffer_Create, OnMsgCreate) 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_UNHANDLED(handled = false) 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_END_MESSAGE_MAP() 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(brettw) handle bad messages! 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return handled; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void PPB_Buffer_Proxy::OnMsgCreate( 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Instance instance, 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t size, 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HostResource* result_resource, 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ppapi::proxy::SerializedHandle* result_shm_handle) { 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Overwritten below on success. 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result_shm_handle->set_null_shmem(); 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance); 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!dispatcher) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thunk::EnterResourceCreation enter(instance); 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enter.failed()) 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PP_Resource local_buffer_resource = enter.functions()->CreateBuffer(instance, 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size); 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (local_buffer_resource == 0) 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thunk::EnterResourceNoLock<thunk::PPB_BufferTrusted_API> trusted_buffer( 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) local_buffer_resource, false); 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (trusted_buffer.failed()) 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int local_fd; 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (trusted_buffer.object()->GetSharedMemory(&local_fd) != PP_OK) 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result_resource->SetHostResource(instance, local_buffer_resource); 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(piman/brettw): Change trusted interface to return a PP_FileHandle, 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // those casts are ugly. 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::PlatformFile platform_file = 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<HANDLE>(static_cast<intptr_t>(local_fd)); 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#elif defined(OS_POSIX) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) local_fd; 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) #error Not implemented. 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result_shm_handle->set_shmem( 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dispatcher->ShareHandleWithRemote(platform_file, false), size); 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace proxy 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace ppapi 151