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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "ppapi/shared_impl/array_writer.h"
#include <stddef.h>
#include <algorithm>
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/resource.h"
#include "ppapi/shared_impl/resource_tracker.h"
#include "ppapi/shared_impl/var.h"
#include "ppapi/shared_impl/var_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;
}
bool ArrayWriter::StoreVarVector(
const std::vector<scoped_refptr<Var> >& 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_Var));
// 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_Vars.
PP_Var* dest_vars = static_cast<PP_Var*>(dest);
for (size_t i = 0; i < input.size(); i++)
dest_vars[i] = input[i]->GetPPVar();
return true;
}
bool ArrayWriter::StoreVarVector(const std::vector<PP_Var>& 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_Var));
// 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 vars.
for (size_t i = 0; i < input.size(); i++)
PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(input[i]);
return false;
}
std::copy(input.begin(), input.end(), static_cast<PP_Var*>(dest));
return true;
}
} // namespace ppapi
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