The Tor Browser: content/media/MediaInfo.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */

     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 #if !defined(MediaInfo_h)

     7 #define MediaInfo_h

     9 #include "nsSize.h"

    10 #include "nsRect.h"

    11 #include "ImageTypes.h"

    13 namespace mozilla {

    15 // Stores info relevant to presenting media frames.

    16 class VideoInfo {

    17 public:

    18   VideoInfo()

    19     : mDisplay(0,0)

    20     , mStereoMode(StereoMode::MONO)

    21     , mHasVideo(false)

    22   {}

    24   // Size in pixels at which the video is rendered. This is after it has

    25   // been scaled by its aspect ratio.

    26   nsIntSize mDisplay;

    28   // Indicates the frame layout for single track stereo videos.

    29   StereoMode mStereoMode;

    31   // True if we have an active video bitstream.

    32   bool mHasVideo;

    33 };

    35 class AudioInfo {

    36 public:

    37   AudioInfo()

    38     : mRate(44100)

    39     , mChannels(2)

    40     , mHasAudio(false)

    41   {}

    43   // Sample rate.

    44   uint32_t mRate;

    46   // Number of audio channels.

    47   uint32_t mChannels;

    49   // True if we have an active audio bitstream.

    50   bool mHasAudio;

    51 };

    53 class MediaInfo {

    54 public:

    55   bool HasVideo() const

    56   {

    57     return mVideo.mHasVideo;

    58   }

    60   bool HasAudio() const

    61   {

    62     return mAudio.mHasAudio;

    63   }

    65   bool HasValidMedia() const

    66   {

    67     return HasVideo() || HasAudio();

    68   }

    70   VideoInfo mVideo;

    71   AudioInfo mAudio;

    72 };

    74 } // namespace mozilla

    76 #endif // MediaInfo_h

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