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// Copyright 2016 The Draco Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "draco/core/data_buffer.h"
#include <algorithm>
namespace draco {
DataBuffer::DataBuffer() {}
bool DataBuffer::Update(const void *data, int64_t size) {
const int64_t offset = 0;
return this->Update(data, size, offset);
}
bool DataBuffer::Update(const void *data, int64_t size, int64_t offset) {
if (data == nullptr) {
if (size + offset < 0) {
return false;
}
// If no data is provided, just resize the buffer.
data_.resize(size + offset);
} else {
if (size < 0) {
return false;
}
if (size + offset > static_cast<int64_t>(data_.size())) {
data_.resize(size + offset);
}
const uint8_t *const byte_data = static_cast<const uint8_t *>(data);
std::copy(byte_data, byte_data + size, data_.data() + offset);
}
descriptor_.buffer_update_count++;
return true;
}
void DataBuffer::Resize(int64_t size) {
data_.resize(size);
descriptor_.buffer_update_count++;
}
void DataBuffer::WriteDataToStream(std::ostream &stream) {
if (data_.size() == 0) {
return;
}
stream.write(reinterpret_cast<char *>(data_.data()), data_.size());
}
} // namespace draco
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