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// Copyright 2015 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 "media/cdm/simple_cdm_buffer.h"
#include <limits>
#include "base/logging.h"
#include "base/numerics/safe_conversions.h"
namespace media {
// static
SimpleCdmBuffer* SimpleCdmBuffer::Create(size_t capacity) {
DCHECK(capacity);
// cdm::Buffer interface limits capacity to uint32.
DCHECK_LE(capacity, std::numeric_limits<uint32_t>::max());
return new SimpleCdmBuffer(base::checked_cast<uint32_t>(capacity));
}
SimpleCdmBuffer::SimpleCdmBuffer(uint32_t capacity)
: buffer_(capacity), size_(0) {}
SimpleCdmBuffer::~SimpleCdmBuffer() {}
void SimpleCdmBuffer::Destroy() {
delete this;
}
uint32_t SimpleCdmBuffer::Capacity() const {
return buffer_.size();
}
uint8_t* SimpleCdmBuffer::Data() {
return buffer_.data();
}
void SimpleCdmBuffer::SetSize(uint32_t size) {
DCHECK(size <= Capacity());
size_ = size > Capacity() ? 0 : size;
}
uint32_t SimpleCdmBuffer::Size() const {
return size_;
}
} // namespace media
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