michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=8 sts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: #if !defined(MediaInfo_h)
michael@0: #define MediaInfo_h
michael@0: 
michael@0: #include "nsSize.h"
michael@0: #include "nsRect.h"
michael@0: #include "ImageTypes.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: // Stores info relevant to presenting media frames.
michael@0: class VideoInfo {
michael@0: public:
michael@0:   VideoInfo()
michael@0:     : mDisplay(0,0)
michael@0:     , mStereoMode(StereoMode::MONO)
michael@0:     , mHasVideo(false)
michael@0:   {}
michael@0: 
michael@0:   // Size in pixels at which the video is rendered. This is after it has
michael@0:   // been scaled by its aspect ratio.
michael@0:   nsIntSize mDisplay;
michael@0: 
michael@0:   // Indicates the frame layout for single track stereo videos.
michael@0:   StereoMode mStereoMode;
michael@0: 
michael@0:   // True if we have an active video bitstream.
michael@0:   bool mHasVideo;
michael@0: };
michael@0: 
michael@0: class AudioInfo {
michael@0: public:
michael@0:   AudioInfo()
michael@0:     : mRate(44100)
michael@0:     , mChannels(2)
michael@0:     , mHasAudio(false)
michael@0:   {}
michael@0: 
michael@0:   // Sample rate.
michael@0:   uint32_t mRate;
michael@0: 
michael@0:   // Number of audio channels.
michael@0:   uint32_t mChannels;
michael@0: 
michael@0:   // True if we have an active audio bitstream.
michael@0:   bool mHasAudio;
michael@0: };
michael@0: 
michael@0: class MediaInfo {
michael@0: public:
michael@0:   bool HasVideo() const
michael@0:   {
michael@0:     return mVideo.mHasVideo;
michael@0:   }
michael@0: 
michael@0:   bool HasAudio() const
michael@0:   {
michael@0:     return mAudio.mHasAudio;
michael@0:   }
michael@0: 
michael@0:   bool HasValidMedia() const
michael@0:   {
michael@0:     return HasVideo() || HasAudio();
michael@0:   }
michael@0: 
michael@0:   VideoInfo mVideo;
michael@0:   AudioInfo mAudio;
michael@0: };
michael@0: 
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // MediaInfo_h