1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/MediaInfo.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,76 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim: set ts=8 sts=2 et sw=2 tw=80: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +#if !defined(MediaInfo_h)
1.10 +#define MediaInfo_h
1.11 +
1.12 +#include "nsSize.h"
1.13 +#include "nsRect.h"
1.14 +#include "ImageTypes.h"
1.15 +
1.16 +namespace mozilla {
1.17 +
1.18 +// Stores info relevant to presenting media frames.
1.19 +class VideoInfo {
1.20 +public:
1.21 + VideoInfo()
1.22 + : mDisplay(0,0)
1.23 + , mStereoMode(StereoMode::MONO)
1.24 + , mHasVideo(false)
1.25 + {}
1.26 +
1.27 + // Size in pixels at which the video is rendered. This is after it has
1.28 + // been scaled by its aspect ratio.
1.29 + nsIntSize mDisplay;
1.30 +
1.31 + // Indicates the frame layout for single track stereo videos.
1.32 + StereoMode mStereoMode;
1.33 +
1.34 + // True if we have an active video bitstream.
1.35 + bool mHasVideo;
1.36 +};
1.37 +
1.38 +class AudioInfo {
1.39 +public:
1.40 + AudioInfo()
1.41 + : mRate(44100)
1.42 + , mChannels(2)
1.43 + , mHasAudio(false)
1.44 + {}
1.45 +
1.46 + // Sample rate.
1.47 + uint32_t mRate;
1.48 +
1.49 + // Number of audio channels.
1.50 + uint32_t mChannels;
1.51 +
1.52 + // True if we have an active audio bitstream.
1.53 + bool mHasAudio;
1.54 +};
1.55 +
1.56 +class MediaInfo {
1.57 +public:
1.58 + bool HasVideo() const
1.59 + {
1.60 + return mVideo.mHasVideo;
1.61 + }
1.62 +
1.63 + bool HasAudio() const
1.64 + {
1.65 + return mAudio.mHasAudio;
1.66 + }
1.67 +
1.68 + bool HasValidMedia() const
1.69 + {
1.70 + return HasVideo() || HasAudio();
1.71 + }
1.72 +
1.73 + VideoInfo mVideo;
1.74 + AudioInfo mAudio;
1.75 +};
1.76 +
1.77 +} // namespace mozilla
1.78 +
1.79 +#endif // MediaInfo_h
