NaCl Proxy for graphics3d.

src/shared/ppapi_proxy/browser_ppb_graphics_3d_rpc_server.cc

+// Copyright (c) 2011 The Native Client Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// SRPC-abstraction wrappers around PPB_Graphics3D functions.
+
+#include <limits>
+
+#include "native_client/src/include/nacl_scoped_ptr.h"
+#include "native_client/src/include/portability.h"
+#include "native_client/src/shared/ppapi_proxy/browser_callback.h"
+#include "native_client/src/shared/ppapi_proxy/browser_globals.h"
+#include "native_client/src/shared/ppapi_proxy/object_serialize.h"
+#include "native_client/src/shared/ppapi_proxy/plugin_resource.h"
+#include "native_client/src/shared/ppapi_proxy/utility.h"
+#include "native_client/src/trusted/desc/nacl_desc_wrapper.h"
+#include "native_client/src/third_party/ppapi/c/dev/pp_graphics_3d_dev.h"
+#include "native_client/src/third_party/ppapi/c/dev/ppb_graphics_3d_dev.h"
+#include "native_client/src/third_party/ppapi/c/dev/ppb_graphics_3d_trusted_dev.h"
+#include "native_client/src/third_party/ppapi/c/pp_errors.h"
+#include "srpcgen/ppb_rpc.h"
+
+using ppapi_proxy::DebugPrintf;
+using ppapi_proxy::SerializeTo;
+
+namespace {
+
+const int32_t kMaxAllowedBufferSize = 16777216;
+
+/// Check that the attribute list is well formed.
+bool ValidateAttribList(nacl_abi_size_t attrib_list_count,
+                        int32_t* attrib_list) {
+  DebugPrintf("ValidateAttribList: count = %d, ptr_null = %d\n",
+      static_cast<int>(attrib_list_count), (attrib_list == NULL) ? 1 : 0);
+  // Zero count lists are ok.
+  if (attrib_list_count == 0)
+    return true;
+  // NULL lists w/ a non-zero count are not allowed.
+  if (attrib_list == NULL)
+    return false;
+  // Must be an odd count, and the last item must be the terminator.
+  return (attrib_list_count & 1) &&
+         (attrib_list[attrib_list_count - 1] == PP_GRAPHICS3DATTRIB_NONE);
+}
+
+/// Check that the attribute list is well formed, then copy to output.
+bool ValidateAndCopyAttribList(nacl_abi_size_t in_attrib_list_count,
+                               int32_t* in_attrib_list,
+                               nacl_abi_size_t* out_attrib_list_count,
+                               int32_t* out_attrib_list) {
+
+  DebugPrintf("ValidateAndCopyAttribList: in_count = %d, in_ptr_null = %d\n",
+      static_cast<int>(in_attrib_list_count),
+      (in_attrib_list == NULL) ? 1 : 0);
+  DebugPrintf("                           out_count = %d, out_ptr_null = %d\n",
+      static_cast<int>(*out_attrib_list_count),
+      (out_attrib_list == NULL) ? 1 : 0);
+
+  // Attrib lists can both be NULL w/ 0 count.
+  if ((in_attrib_list == NULL) && (out_attrib_list == NULL))
+    return (in_attrib_list_count == 0) && (*out_attrib_list_count == 0);
+  // Don't allow only one list to be NULL.
+  if ((in_attrib_list == NULL) || (out_attrib_list == NULL))
+    return false;
+  // Input and output lists must be the same size.
+  if (in_attrib_list_count != *out_attrib_list_count)
+    return false;
+  // Make sure input list is well formed.
+  if (!ValidateAttribList(in_attrib_list_count, in_attrib_list))
+    return false;
+  // Copy input list to output list.
+  for (nacl_abi_size_t i = 0; i < in_attrib_list_count; ++i)
+    out_attrib_list[i] = in_attrib_list[i];
+  return true;
+}
+
+}  // namespace
+
+//@{
+/// The following methods are SRPC dispatchers for ppapi/c/ppb_graphics_3d.h.
+
+void PpbGraphics3DRpcServer::PPB_Graphics3D_Create(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Instance instance,
+    PP_Resource share_context,
+    nacl_abi_size_t num_attrib_list, int32_t* attrib_list,
+    PP_Resource* graphics3d_id) {
+  DebugPrintf("PpbGraphics3DRpcServer::PPB_Graphics3D_Create(...)\n");
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  if (!ValidateAttribList(num_attrib_list, attrib_list))
+    return;
+  *graphics3d_id = ppapi_proxy::PPBGraphics3DInterface()->Create(
+      instance, share_context, attrib_list);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3D_GetAttribs(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource graphics3d_id,
+    nacl_abi_size_t in_attrib_list_count, int32_t* in_attrib_list,
+    nacl_abi_size_t* out_attrib_list_count, int32_t* out_attrib_list,
+    int32_t* pp_error) {
+  DebugPrintf("PpbGraphics3DRpcServer::PPB_Graphics3D_GetAttrib(...)\n");
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  if (!ValidateAndCopyAttribList(in_attrib_list_count, in_attrib_list,
+                                 out_attrib_list_count, out_attrib_list))
+    return;
+  *pp_error = ppapi_proxy::PPBGraphics3DInterface()->GetAttribs(
+      graphics3d_id, out_attrib_list);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3D_SetAttribs(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource graphics3d_id,
+    nacl_abi_size_t attrib_list_count, int32_t* attrib_list,
+    int32_t* pp_error) {
+  DebugPrintf("PpbGraphics3DRpcServer::PPB_Graphics3D_SetAttrib(...)\n");
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  if (!ValidateAttribList(attrib_list_count, attrib_list))
+    return;
+  *pp_error = ppapi_proxy::PPBGraphics3DInterface()->SetAttribs(
+      graphics3d_id, attrib_list);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3D_ResizeBuffers(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource graphics3d_id,
+    int32_t width,
+    int32_t height,
+    int32_t* pp_error) {
+  DebugPrintf("PpbGraphics3DRpcServer::PPB_Graphics3D_ResizeBuffers(...)\n");
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  *pp_error = ppapi_proxy::PPBGraphics3DInterface()->ResizeBuffers(
+      graphics3d_id, width, height);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3D_SwapBuffers(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource graphics3d_id,
+    int32_t callback_id,
+    int32_t* pp_error) {
+  DebugPrintf("PpbGraphics3DRpcServer::PPB_Graphics3D_SwapBuffers(...)\n");
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  PP_CompletionCallback remote_callback =
+      ppapi_proxy::MakeRemoteCompletionCallback(rpc->channel, callback_id);
+  if (remote_callback.func == NULL) {
+    DebugPrintf("    PPB_Graphics3D_SwapBuffers() FAILED!\n");
+    return;  // Treat this as a generic SRPC error.
+  }
+  *pp_error = ppapi_proxy::PPBGraphics3DInterface()->SwapBuffers(
+      graphics3d_id, remote_callback);
+  if (*pp_error != PP_OK_COMPLETIONPENDING)
+    ppapi_proxy::DeleteRemoteCallbackInfo(remote_callback);
+  DebugPrintf("    PPB_Graphics3D_SwapBuffers: pp_error=%"NACL_PRId32"\n",
+              *pp_error);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+//@}
+
+//@{
+/// The following methods are the SRPC dispatchers for
+/// ppapi/c/ppb_graphics_3d_trusted.h.
+void PpbGraphics3DRpcServer::PPB_Graphics3DTrusted_CreateRaw(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Instance instance,
+    PP_Resource share_context,
+    nacl_abi_size_t attrib_list_bytes, int32_t* attrib_list,
+    PP_Resource* resource_id) {
+  DebugPrintf("PPB_Graphics3DTrusted_CreateRaw: instance: %"NACL_PRIu32"\n",
+              instance);
+
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  if (!ValidateAttribList(attrib_list_bytes, attrib_list))
+    return;
+
+  *resource_id = ppapi_proxy::PPBGraphics3DTrustedInterface()->CreateRaw(
+      instance, share_context, attrib_list);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3DTrusted_InitCommandBuffer(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource resource_id,
+    int32_t size,
+    int32_t* success) {
+  DebugPrintf("PPB_Graphics3DTrusted_InitCommandBuffer(...) resource_id: %d\n",
+      resource_id);
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  if ((size > kMaxAllowedBufferSize) || (size < 0))
+    return;
+  *success = ppapi_proxy::PPBGraphics3DTrustedInterface()->InitCommandBuffer(
+      resource_id, size);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+
+void PpbGraphics3DRpcServer::PPB_Graphics3DTrusted_GetRingBuffer(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource resource_id,
+    NaClSrpcImcDescType* shm_desc,
+    int32_t* shm_size) {
+  DebugPrintf("PPB_Graphics3DTrusted_GetRingBuffer\n");
+  nacl::DescWrapperFactory factory;
+  nacl::scoped_ptr<nacl::DescWrapper> desc_wrapper;
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+
+  int native_handle = 0;
+  uint32_t native_size = 0;
+  ppapi_proxy::PPBGraphics3DTrustedInterface()->GetRingBuffer(
+      resource_id, &native_handle, &native_size);
+  desc_wrapper.reset(factory.ImportShmHandle(
+      (NaClHandle)native_handle, native_size));
+  *shm_desc = desc_wrapper->desc();
+  *shm_size = native_size;
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3DTrusted_GetState(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource resource_id,
+    nacl_abi_size_t* state_bytes, char* state) {
+  DebugPrintf("PPB_Graphics3DTrusted_GetState\n");
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  PP_Graphics3DTrustedState trusted_state =
+      ppapi_proxy::PPBGraphics3DTrustedInterface()->GetState(resource_id);
+  *reinterpret_cast<PP_Graphics3DTrustedState*>(state) = trusted_state;
+  *state_bytes = sizeof(trusted_state);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3DTrusted_Flush(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource resource_id,
+    int32_t put_offset) {
+  DebugPrintf("PPB_Graphics3DTrusted_Flush(id: %d, put_offset: %d\n",
+      resource_id, put_offset);
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  ppapi_proxy::PPBGraphics3DTrustedInterface()->Flush(resource_id, put_offset);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3DTrusted_FlushSync(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource resource_id,
+    int32_t put_offset,
+    nacl_abi_size_t* state_bytes, char* state) {
+  DebugPrintf("PPB_Graphics3DTrusted_FlushSync\n");
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  PP_Graphics3DTrustedState trusted_state =
+      ppapi_proxy::PPBGraphics3DTrustedInterface()->FlushSync(resource_id,
+                                                              put_offset);
+  *reinterpret_cast<PP_Graphics3DTrustedState*>(state) = trusted_state;
+  *state_bytes = sizeof(trusted_state);
+  rpc->result = NACL_SRPC_RESULT_OK;
+
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3DTrusted_CreateTransferBuffer(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource resource_id,
+    int32_t size,
+    int32_t id_request,
+    int32_t* id) {
+  UNREFERENCED_PARAMETER(id_request);
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  DebugPrintf("PPB_Graphics3DTrusted_CreateTransferBuffer\n");
+  if ((size > kMaxAllowedBufferSize) || (size < 0))
+    return;
+  *id = ppapi_proxy::PPBGraphics3DTrustedInterface()->CreateTransferBuffer(
+      resource_id, size);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3DTrusted_DestroyTransferBuffer(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource resource_id,
+    int32_t id) {
+  DebugPrintf("PPB_Graphics3DTrusted_DestroyTransferBuffer\n");
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  ppapi_proxy::PPBGraphics3DTrustedInterface()->DestroyTransferBuffer(
+      resource_id, id);
+  rpc->result = NACL_SRPC_RESULT_OK;
+
+}
+
+void PpbGraphics3DRpcServer::PPB_Graphics3DTrusted_GetTransferBuffer(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    PP_Resource resource_id,
+    int32_t id,
+    NaClSrpcImcDescType* shm_desc,
+    int32_t* shm_size) {
+  DebugPrintf("PPB_Graphics3DTrusted_GetTransferBuffer\n");
+  nacl::DescWrapperFactory factory;
+  nacl::scoped_ptr<nacl::DescWrapper> desc_wrapper;
+  NaClSrpcClosureRunner runner(done);
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+
+  int native_handle = 0;
+  uint32_t native_size = 0;
+  ppapi_proxy::PPBGraphics3DTrustedInterface()->
+      GetTransferBuffer(resource_id, id, &native_handle, &native_size);
+  desc_wrapper.reset(factory.ImportShmHandle(
+      (NaClHandle)native_handle, native_size));
+  *shm_desc = desc_wrapper->desc();
+  *shm_size = native_size;
+  rpc->result = NACL_SRPC_RESULT_OK;
+
+}
+
+//@}