image/DecoderFlags.h
author Phil Ringnalda <philringnalda@gmail.com>
Mon, 04 Jul 2016 11:17:28 -0700
changeset 303687 fdffe351484e4abbd32f686424ff840ae05f0992
parent 257928 3a12957a6bd3166c3c0f6b5667264ddd040e6318
child 378904 c856f513264340a2d6c2b70f71f345b5e4c8d6c0
permissions -rw-r--r--
Merge m-c to f-t, a=release-me-from-the-tyranny-of-this-hook

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 mozilla_image_DecoderFlags_h
#define mozilla_image_DecoderFlags_h

#include "mozilla/TypedEnumBits.h"

namespace mozilla {
namespace image {

/**
 * Flags that influence decoder behavior. Note that these flags *don't*
 * influence the logical content of the surfaces that the decoder generates, so
 * they're not in a factor in SurfaceCache lookups and the like. These flags
 * instead either influence which surfaces are generated at all or the tune the
 * decoder's behavior for a particular scenario.
 */
enum class DecoderFlags : uint8_t
{
  FIRST_FRAME_ONLY               = 1 << 0,
  IS_REDECODE                    = 1 << 1,
  IMAGE_IS_TRANSIENT             = 1 << 2,
  ASYNC_NOTIFY                   = 1 << 3
};
MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(DecoderFlags)

/**
 * @return the default set of decode flags.
 */
inline DecoderFlags
DefaultDecoderFlags()
{
  return DecoderFlags();
}

} // namespace image
} // namespace mozilla

#endif // mozilla_image_DecoderFlags_h