/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef GFX_FONT_DATA_H
#define GFX_FONT_DATA_H

#include "nsCOMPtr.h"

// Refcounted wrapper for downloaded font data.
class FontData final {
 public:
  // Construct from a malloc'd buffer. This takes ownership of the given buffer;
  // caller MUST NOT delete it or assume anything further about its lifetime.
  FontData(const uint8_t*&& aData, uint32_t aLength)
      : mData(aData), mLength(aLength) {}

  FontData() = delete;
  FontData(const FontData& aOther) = delete;

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(FontData)

  const uint8_t* Data() const { return mData; }
  uint32_t Length() const { return mLength; }

 private:
  // Private destructor: this should only be destroyed by Release().
  ~FontData() { free(const_cast<uint8_t*>(mData)); }

  const uint8_t* const mData;
  uint32_t const mLength;
};

#endif  // GFX_FONT_DATA_H