1 files changed, 151 insertions, 0 deletions
diff --git a/ppapi/proxy/ppb_buffer_proxy.cc b/ppapi/proxy/ppb_buffer_proxy.cc
new file mode 100644
index 0000000..610ef0b
--- /dev/null
+++ b/ppapi/proxy/ppb_buffer_proxy.cc
@@ -0,0 +1,151 @@
+// Copyright (c) 2010 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 "ppapi/proxy/ppb_buffer_proxy.h"
+
+#include <vector>
+
+#include "base/logging.h"
+#include "build/build_config.h"
+#include "ppapi/c/pp_completion_callback.h"
+#include "ppapi/c/pp_resource.h"
+#include "ppapi/c/dev/ppb_buffer_dev.h"
+#include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_resource.h"
+#include "ppapi/proxy/ppapi_messages.h"
+
+namespace pp {
+namespace proxy {
+
+class Buffer : public PluginResource {
+ public:
+  Buffer(uint64_t memory_handle, int32_t size);
+  virtual ~Buffer();
+
+  // Resource overrides.
+  virtual Buffer* AsBuffer() { return this; }
+
+  int32_t size() const { return size_; }
+
+  void* Map();
+  void Unmap();
+
+ private:
+  uint64_t memory_handle_;
+  int32_t size_;
+
+  void* mapped_data_;
+
+  DISALLOW_COPY_AND_ASSIGN(Buffer);
+};
+
+Buffer::Buffer(uint64_t memory_handle, int32_t size)
+    : memory_handle_(memory_handle),
+      size_(size),
+      mapped_data_(NULL) {
+}
+
+Buffer::~Buffer() {
+  Unmap();
+}
+
+void* Buffer::Map() {
+  // TODO(brettw) implement this.
+  return mapped_data_;
+}
+
+void Buffer::Unmap() {
+  // TODO(brettw) implement this.
+}
+
+namespace {
+
+PP_Resource Create(PP_Module module_id, int32_t size) {
+  PP_Resource result = 0;
+  uint64_t shm_handle = -1;
+  PluginDispatcher::Get()->Send(
+      new PpapiHostMsg_PPBBuffer_Create(
+          INTERFACE_ID_PPB_BUFFER, module_id, size,
+          &result, &shm_handle));
+  if (!result)
+    return 0;
+
+  linked_ptr<Buffer> object(new Buffer(shm_handle, size));
+  PluginDispatcher::Get()->plugin_resource_tracker()->AddResource(
+      result, object);
+  return result;
+}
+
+PP_Bool IsBuffer(PP_Resource resource) {
+  Buffer* object = PluginResource::GetAs<Buffer>(resource);
+  return BoolToPPBool(!!object);
+}
+
+PP_Bool Describe(PP_Resource resource, int32_t* size_in_bytes) {
+  Buffer* object = PluginResource::GetAs<Buffer>(resource);
+  if (!object) {
+    *size_in_bytes = 0;
+    return PP_FALSE;
+  }
+  *size_in_bytes = object->size();
+  return PP_TRUE;
+}
+
+void* Map(PP_Resource resource) {
+  Buffer* object = PluginResource::GetAs<Buffer>(resource);
+  if (!object)
+    return NULL;
+  return object->Map();
+}
+
+void Unmap(PP_Resource resource) {
+  Buffer* object = PluginResource::GetAs<Buffer>(resource);
+  if (object)
+    object->Unmap();
+}
+
+const PPB_Buffer_Dev ppb_buffer = {
+  &Create,
+  &IsBuffer,
+  &Describe,
+  &Map,
+  &Unmap,
+};
+
+}  // namespace
+
+PPB_Buffer_Proxy::PPB_Buffer_Proxy(Dispatcher* dispatcher,
+                                   const void* target_interface)
+    : InterfaceProxy(dispatcher, target_interface) {
+}
+
+PPB_Buffer_Proxy::~PPB_Buffer_Proxy() {
+}
+
+const void* PPB_Buffer_Proxy::GetSourceInterface() const {
+  return &ppb_buffer;
+}
+
+InterfaceID PPB_Buffer_Proxy::GetInterfaceId() const {
+  return INTERFACE_ID_PPB_BUFFER;
+}
+
+void PPB_Buffer_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  IPC_BEGIN_MESSAGE_MAP(PPB_Buffer_Proxy, msg)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBBuffer_Create, OnMsgCreate)
+  IPC_END_MESSAGE_MAP()
+  // TODO(brettw) handle bad messages!
+}
+
+void PPB_Buffer_Proxy::OnMsgCreate(PP_Module module,
+                                   int32_t size,
+                                   PP_Resource* result_resource,
+                                   uint64_t* result_shm_handle) {
+  *result_resource = ppb_buffer_target()->Create(module, size);
+  // TODO(brettw) set the shm handle from a trusted interface.
+  *result_shm_handle = 0;
+}
+
+}  // namespace proxy
+}  // namespace pp