Implement out-of-process proxy for PPB_Buffer_Dev.

webkit/plugins/ppapi/ppb_buffer_impl.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/plugins/ppapi/ppb_buffer_impl.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "ppapi/c/dev/ppb_buffer_dev.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "webkit/plugins/ppapi/common.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 
 using ::ppapi::thunk::PPB_Buffer_API;
+using ::ppapi::thunk::PPB_BufferTrusted_API;
 
 namespace webkit {
 namespace ppapi {
 
 PPB_Buffer_Impl::PPB_Buffer_Impl(PluginInstance* instance)
     : Resource(instance), size_(0) {
 }
 
 PPB_Buffer_Impl::~PPB_Buffer_Impl() {
 }
@@ skipping 10 matching lines @@
 }
 
 PPB_Buffer_Impl* PPB_Buffer_Impl::AsPPB_Buffer_Impl() {
   return this;
 }
 
 PPB_Buffer_API* PPB_Buffer_Impl::AsPPB_Buffer_API() {
   return this;
 }
 
+PPB_BufferTrusted_API* PPB_Buffer_Impl::AsPPB_BufferTrusted_API() {
+  return this;
+}
+
 bool PPB_Buffer_Impl::Init(uint32_t size) {
   if (size == 0 || !instance())
     return false;
   size_ = size;
   shared_memory_.reset(
       instance()->delegate()->CreateAnonymousSharedMemory(size));
   return shared_memory_.get() != NULL;
 }
 
 PP_Bool PPB_Buffer_Impl::Describe(uint32_t* size_in_bytes) {
@@ skipping 10 matching lines @@
   DCHECK(shared_memory_.get());
   if (!shared_memory_->Map(size_))
     return NULL;
   return shared_memory_->memory();
 }
 
 void PPB_Buffer_Impl::Unmap() {
   shared_memory_->Unmap();
 }
 
+int32_t PPB_Buffer_Impl::GetSharedMemory(int* shm_handle) {
+#if defined(OS_POSIX)
+  *shm_handle = shared_memory_->handle().fd;
+#elif defined(OS_WIN)
+  *shm_handle = reinterpret_cast<int>(
+      shared_memory_->handle());
+#else
+#error "Platform not supported."
+#endif
+  return PP_OK;
+}
+
 BufferAutoMapper::BufferAutoMapper(PPB_Buffer_API* api) : api_(api) {
   needs_unmap_ = !PP_ToBool(api->IsMapped());
   data_ = api->Map();
   api->Describe(&size_);
 }
 
 BufferAutoMapper::~BufferAutoMapper() {
   if (needs_unmap_)
     api_->Unmap();
 }
 
 }  // namespace ppapi
 }  // namespace webkit