The Tor Browser: content/media/fmp4/ffmpeg/FFmpegDecoderModule.cpp@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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/. */

     7 #include "FFmpegRuntimeLinker.h"

     8 #include "FFmpegAACDecoder.h"

     9 #include "FFmpegH264Decoder.h"

    11 #include "FFmpegDecoderModule.h"

    13 namespace mozilla

    14 {

    16 PRLogModuleInfo* GetFFmpegDecoderLog()

    17 {

    18   static PRLogModuleInfo* sFFmpegDecoderLog = nullptr;

    19   if (!sFFmpegDecoderLog) {

    20     sFFmpegDecoderLog = PR_NewLogModule("FFmpegDecoderModule");

    21   }

    22   return sFFmpegDecoderLog;

    23 }

    25 bool FFmpegDecoderModule::sFFmpegLinkDone = false;

    27 FFmpegDecoderModule::FFmpegDecoderModule()

    28 {

    29   MOZ_COUNT_CTOR(FFmpegDecoderModule);

    30 }

    32 FFmpegDecoderModule::~FFmpegDecoderModule() {

    33   MOZ_COUNT_DTOR(FFmpegDecoderModule);

    34 }

    36 bool

    37 FFmpegDecoderModule::Link()

    38 {

    39   if (sFFmpegLinkDone) {

    40     return true;

    41   }

    43   if (!FFmpegRuntimeLinker::Link()) {

    44     NS_WARNING("Failed to link FFmpeg shared libraries.");

    45     return false;

    46   }

    48   sFFmpegLinkDone = true;

    50   return true;

    51 }

    53 nsresult

    54 FFmpegDecoderModule::Shutdown()

    55 {

    56   // Nothing to do here.

    57   return NS_OK;

    58 }

    60 MediaDataDecoder*

    61 FFmpegDecoderModule::CreateH264Decoder(

    62   const mp4_demuxer::VideoDecoderConfig& aConfig,

    63   mozilla::layers::LayersBackend aLayersBackend,

    64   mozilla::layers::ImageContainer* aImageContainer,

    65   MediaTaskQueue* aVideoTaskQueue, MediaDataDecoderCallback* aCallback)

    66 {

    67   FFMPEG_LOG("Creating FFmpeg H264 decoder.");

    68   return new FFmpegH264Decoder(aVideoTaskQueue, aCallback, aConfig,

    69                                aImageContainer);

    70 }

    72 MediaDataDecoder*

    73 FFmpegDecoderModule::CreateAACDecoder(

    74   const mp4_demuxer::AudioDecoderConfig& aConfig,

    75   MediaTaskQueue* aAudioTaskQueue, MediaDataDecoderCallback* aCallback)

    76 {

    77   FFMPEG_LOG("Creating FFmpeg AAC decoder.");

    78   return new FFmpegAACDecoder(aAudioTaskQueue, aCallback, aConfig);

    79 }

    81 } // namespace mozilla

The Tor Browser / file revision

content/media/fmp4/ffmpeg/FFmpegDecoderModule.cpp@97036ab72558

content/media/fmp4/ffmpeg/FFmpegDecoderModule.cpp