Cloning a bunch of stuff from the native_client repository at r6528

ppapi/native_client/src/shared/ppapi_proxy/browser_ppp_printing.cc

Index: ppapi/native_client/src/shared/ppapi_proxy/browser_ppp_printing.cc
===================================================================
--- ppapi/native_client/src/shared/ppapi_proxy/browser_ppp_printing.cc	(revision 0)
+++ ppapi/native_client/src/shared/ppapi_proxy/browser_ppp_printing.cc	(revision 0)
@@ -0,0 +1,120 @@
+// 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.
+
+#include "native_client/src/shared/ppapi_proxy/browser_ppp_printing.h"
+
+// Include file order cannot be observed because ppp_instance declares a
+// structure return type that causes an error on Windows.
+// TODO(sehr, brettw): fix the return types and include order in PPAPI.
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/c/pp_resource.h"
+#include "srpcgen/ppp_rpc.h"
+#include "native_client/src/include/portability.h"
+#include "native_client/src/shared/ppapi_proxy/browser_globals.h"
+#include "native_client/src/shared/ppapi_proxy/browser_ppp.h"
+#include "native_client/src/shared/ppapi_proxy/utility.h"
+
+namespace ppapi_proxy {
+
+namespace {
+
+const nacl_abi_size_t kPPPrintOutputFormatBytes =
+    static_cast<nacl_abi_size_t>(sizeof(PP_PrintOutputFormat_Dev));
+const nacl_abi_size_t kPPPrintSettingsBytes =
+    static_cast<nacl_abi_size_t>(sizeof(struct PP_PrintSettings_Dev));
+const nacl_abi_size_t kPPPrintPageNumberRangeBytes =
+    static_cast<nacl_abi_size_t>(sizeof(struct PP_PrintPageNumberRange_Dev));
+
+PP_PrintOutputFormat_Dev* QuerySupportedFormats(PP_Instance instance,
+                                                uint32_t* format_count) {
+  DebugPrintf("PPP_Printing_Dev::QuerySupportedFormats: "
+              "instance=%"NACL_PRIu32"\n", instance);
+
+  const PPB_Memory_Dev* ppb_memory = PPBMemoryInterface();
+  const nacl_abi_size_t kMaxFormats = 8;
+  nacl_abi_size_t formats_bytes = kMaxFormats * kPPPrintOutputFormatBytes;
+  char* formats =
+      reinterpret_cast<char*>(ppb_memory->MemAlloc(formats_bytes));
+  NaClSrpcError srpc_result =
+      PppPrintingRpcClient::PPP_Printing_QuerySupportedFormats(
+          GetMainSrpcChannel(instance),
+          instance,
+          &formats_bytes, formats,
+          reinterpret_cast<int32_t*>(format_count));
+
+  DebugPrintf("PPP_Printing_Dev::QuerySupportedFormats: %s\n",
+              NaClSrpcErrorString(srpc_result));
+
+  if (*format_count > 0)
+    return reinterpret_cast<PP_PrintOutputFormat_Dev*>(formats);
+
+  ppb_memory->MemFree(formats);
+  return NULL;
+}
+
+int32_t Begin(PP_Instance instance,
+              const struct PP_PrintSettings_Dev* print_settings) {
+  DebugPrintf("PPP_Printing_Dev::Begin: instance=%"NACL_PRIu32"\n", instance);
+
+  int32_t pages_required = 0;
+  NaClSrpcError srpc_result =
+      PppPrintingRpcClient::PPP_Printing_Begin(
+          GetMainSrpcChannel(instance),
+          instance,
+          kPPPrintSettingsBytes,
+          reinterpret_cast<char*>(
+              const_cast<PP_PrintSettings_Dev*>(print_settings)),
+          &pages_required);
+
+  DebugPrintf("PPP_Printing_Dev::QuerySupportedFormats: %s\n",
+              NaClSrpcErrorString(srpc_result));
+  return pages_required;
+}
+
+PP_Resource PrintPages(PP_Instance instance,
+                       const struct PP_PrintPageNumberRange_Dev* page_ranges,
+                       uint32_t page_range_count) {
+  DebugPrintf("PPP_Printing_Dev::PrintPages: "
+              "instance=%"NACL_PRIu32"\n", instance);
+
+  PP_Resource image_data = kInvalidResourceId;
+  NaClSrpcError srpc_result =
+      PppPrintingRpcClient::PPP_Printing_PrintPages(
+          GetMainSrpcChannel(instance),
+          instance,
+          page_range_count * kPPPrintPageNumberRangeBytes,
+          reinterpret_cast<char*>(
+              const_cast<PP_PrintPageNumberRange_Dev*>(page_ranges)),
+          page_range_count,
+          &image_data);
+
+  DebugPrintf("PPP_Printing_Dev::QuerySupportedFormats: %s\n",
+              NaClSrpcErrorString(srpc_result));
+  return image_data;
+}
+
+void End(PP_Instance instance) {
+  DebugPrintf("PPP_Printing_Dev::End: instance=%"NACL_PRIu32"\n", instance);
+
+  NaClSrpcError srpc_result =
+      PppPrintingRpcClient::PPP_Printing_End(GetMainSrpcChannel(instance),
+                                             instance);
+
+  DebugPrintf("PPP_Printing_Dev::End: %s\n", NaClSrpcErrorString(srpc_result));
+}
+
+}  // namespace
+
+const PPP_Printing_Dev* BrowserPrinting::GetInterface() {
+  static const PPP_Printing_Dev printing_interface = {
+    QuerySupportedFormats,
+    Begin,
+    PrintPages,
+    End
+  };
+  return &printing_interface;
+}
+
+}  // namespace ppapi_proxy
+