| // 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() = default; |
| |
| 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 |