author Ehsan Akhgari <>
Fri, 02 Jan 2015 21:08:06 -0500
changeset 248682 292a269e6c01b7b0c8743b468b4569570a978392
parent 240668 40711e8b703dfcf6b6b4ed75838297322a13a8a0
child 257987 a20c7910a82fa2df2f3398c1108d102bac9128b0
permissions -rw-r--r--
Bug 1117261 - Mark virtual overridden functions as MOZ_OVERRIDE in DOM media code; r=rillian

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 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 */
#if !defined(MP4Decoder_h_)
#define MP4Decoder_h_

#include "MediaDecoder.h"

namespace mozilla {

// Decoder that uses a bundled MP4 demuxer and platform decoders to play MP4.
class MP4Decoder : public MediaDecoder

  virtual MediaDecoder* Clone() MOZ_OVERRIDE {
    if (!IsEnabled()) {
      return nullptr;
    return new MP4Decoder();

  virtual MediaDecoderStateMachine* CreateStateMachine() MOZ_OVERRIDE;

#ifdef MOZ_EME
  virtual nsresult SetCDMProxy(CDMProxy* aProxy) MOZ_OVERRIDE;

  // Returns true if aMIMEType is a type that we think we can render with the
  // a MP4 platform decoder backend. If aCodecs is non emtpy, it is filled
  // with a comma-delimited list of codecs to check support for. Notes in
  // out params wether the codecs string contains AAC or H.264.
  static bool CanHandleMediaType(const nsACString& aMIMEType,
                                 const nsAString& aCodecs,
                                 bool& aOutContainsAAC,
                                 bool& aOutContainsH264,
                                 bool& aOutContainsMP3);

  // Returns true if the MP4 backend is preffed on, and we're running on a
  // platform that is likely to have decoders for the contained formats.
  static bool IsEnabled();

} // namespace mozilla