toolkit/components/mediasniffer/nsMediaSniffer.h
author Kashav Madan <kshvmdn@gmail.com>
Sat, 31 Jul 2021 01:39:09 +0000
changeset 587301 e02e9a1e0b154758dba67fbb06dfc0440da9277f
parent 542992 24c3d2bc9951fdc870572e84429baa1d018c5b09
permissions -rw-r--r--
Bug 1718761 - Move {Start,Stop}ApzAutoscroll to CanonicalBrowsingContext, r=Gijs,hiro This accomplishes 2 things: 1. Allows us to directly fetch the layersId of the process that is autoscrolling, which avoids having to fetch it in AutoScrollChild and pass it around. This fixes autoscrolling out-of-process frames with Fission enabled. 2. Makes it easier to handle autoscrolling of in-process documents, since that can't happen through PBrowser. Differential Revision: https://phabricator.services.mozilla.com/D120766

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 tw=80 et cindent: */
/* 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 nsMediaSniffer_h
#define nsMediaSniffer_h

#include "nsIContentSniffer.h"
#include "mozilla/Attributes.h"

// ed905ba3-c656-480e-934e-6bc35bd36aff
#define NS_MEDIA_SNIFFER_CID                         \
  {                                                  \
    0x3fdd6c28, 0x5b87, 0x4e3e, {                    \
      0x8b, 0x57, 0x8e, 0x83, 0xc2, 0x3c, 0x1a, 0x6d \
    }                                                \
  }

#define NS_MEDIA_SNIFFER_CONTRACTID "@mozilla.org/media/sniffer;1"

#define PATTERN_ENTRY(mask, pattern, contentType)                    \
  {                                                                  \
    (const uint8_t*)mask, (const uint8_t*)pattern, sizeof(mask) - 1, \
        contentType                                                  \
  }

struct nsMediaSnifferEntry {
  const uint8_t* mMask;
  const uint8_t* mPattern;
  const uint32_t mLength;
  const char* mContentType;
};

bool MatchesMP4(const uint8_t* aData, const uint32_t aLength,
                nsACString& aSniffedType);

class nsMediaSniffer final : public nsIContentSniffer {
 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSICONTENTSNIFFER

 private:
  ~nsMediaSniffer() = default;

  static nsMediaSnifferEntry sSnifferEntries[];
};

#endif