Make the file chooser use PP_ArrayOutput

ppapi/shared_impl/array_writer.cc

Index: ppapi/shared_impl/array_writer.cc
diff --git a/ppapi/shared_impl/array_writer.cc b/ppapi/shared_impl/array_writer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..957ff77237baa5f2fe5370acbaef777564b5a335
--- /dev/null
+++ b/ppapi/shared_impl/array_writer.cc
@@ -0,0 +1,79 @@
+// Copyright (c) 2012 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/shared_impl/array_writer.h"
+
+#include <algorithm>
+
+#include "ppapi/shared_impl/ppapi_globals.h"
+#include "ppapi/shared_impl/resource.h"
+#include "ppapi/shared_impl/resource_tracker.h"
+
+namespace ppapi {
+
+ArrayWriter::ArrayWriter() {
+  Reset();
+}
+
+ArrayWriter::ArrayWriter(const PP_ArrayOutput& output)
+    : pp_array_output_(output) {
+}
+
+ArrayWriter::~ArrayWriter() {
+}
+
+void ArrayWriter::Reset() {
+  pp_array_output_.GetDataBuffer = NULL;
+  pp_array_output_.user_data = NULL;
+}
+
+bool ArrayWriter::StoreResourceVector(
+    const std::vector< scoped_refptr<Resource> >& input) {
+  // Always call the alloc function, even on 0 array size.
+  void* dest = pp_array_output_.GetDataBuffer(
+      pp_array_output_.user_data,
+      static_cast<uint32_t>(input.size()),
+      sizeof(PP_Resource));
+
+  // Regardless of success, we clear the output to prevent future calls on
+  // this same output object.
+  Reset();
+
+  if (input.empty())
+    return true;  // Allow plugin to return NULL on 0 elements.
+  if (!dest)
+    return false;
+
+  // Convert to PP_Resources.
+  PP_Resource* dest_resources = static_cast<PP_Resource*>(dest);
+  for (size_t i = 0; i < input.size(); i++)
+    dest_resources[i] = input[i]->GetReference();
+  return true;
+}
+
+bool ArrayWriter::StoreResourceVector(const std::vector<PP_Resource>& input) {
+  // Always call the alloc function, even on 0 array size.
+  void* dest = pp_array_output_.GetDataBuffer(
+      pp_array_output_.user_data,
+      static_cast<uint32_t>(input.size()),
+      sizeof(PP_Resource));
+
+  // Regardless of success, we clear the output to prevent future calls on
+  // this same output object.
+  Reset();
+
+  if (input.empty())
+    return true;  // Allow plugin to return NULL on 0 elements.
+  if (!dest) {
+    // Free the resources.
+    for (size_t i = 0; i < input.size(); i++)
+      PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(input[i]);
+    return false;
+  }
+
+  std::copy(input.begin(), input.end(), static_cast<PP_Resource*>(dest));
+  return true;
+}
+
+}  // namespace ppapi