1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 #if !defined(WMFPlatformDecoderModule_h_) 8 # define WMFPlatformDecoderModule_h_ 9 10 # include "PlatformDecoderModule.h" 11 12 namespace mozilla { 13 14 class WMFDecoderModule : public PlatformDecoderModule { 15 public: 16 static already_AddRefed<PlatformDecoderModule> Create(); 17 18 // Initializes the module, loads required dynamic libraries, etc. 19 nsresult Startup() override; 20 21 already_AddRefed<MediaDataDecoder> CreateVideoDecoder( 22 const CreateDecoderParams& aParams) override; 23 24 already_AddRefed<MediaDataDecoder> CreateAudioDecoder( 25 const CreateDecoderParams& aParams) override; 26 27 bool SupportsMimeType(const nsACString& aMimeType, 28 DecoderDoctorDiagnostics* aDiagnostics) const override; 29 bool Supports(const SupportDecoderParams& aParams, 30 DecoderDoctorDiagnostics* aDiagnostics) const override; 31 32 // Called on main thread. 33 static void Init(); 34 35 // Called from any thread, must call init first 36 static int GetNumDecoderThreads(); 37 38 // Accessors that report whether we have the required MFTs available 39 // on the system to play various codecs. Windows Vista doesn't have the 40 // H.264/AAC decoders if the "Platform Update Supplement for Windows Vista" 41 // is not installed, and Window N and KN variants also require a "Media 42 // Feature Pack" to be installed. Windows XP doesn't have WMF. 43 static bool HasH264(); 44 static bool HasVP8(); 45 static bool HasVP9(); 46 static bool HasAAC(); 47 static bool HasMP3(); 48 49 private: 50 WMFDecoderModule() = default; 51 virtual ~WMFDecoderModule(); 52 53 void ReportUsageForTelemetry() const; 54 55 bool mWMFInitialized = false; 56 }; 57 58 } // namespace mozilla 59 60 #endif 61