mirror of
https://github.com/mozilla/gecko-dev.git
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152 lines
3.3 KiB
C++
152 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#if !defined(MediaInfo_h)
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#define MediaInfo_h
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#include "nsSize.h"
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#include "nsRect.h"
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#include "ImageTypes.h"
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#include "nsString.h"
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#include "nsTArray.h"
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#include "StreamBuffer.h" // for TrackID
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namespace mozilla {
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struct TrackInfo {
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void Init(const nsAString& aId,
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const nsAString& aKind,
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const nsAString& aLabel,
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const nsAString& aLanguage,
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bool aEnabled,
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TrackID aOutputId = TRACK_INVALID)
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{
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mId = aId;
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mKind = aKind;
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mLabel = aLabel;
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mLanguage = aLanguage;
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mEnabled = aEnabled;
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mOutputId = aOutputId;
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}
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nsString mId;
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nsString mKind;
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nsString mLabel;
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nsString mLanguage;
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bool mEnabled;
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TrackID mOutputId;
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};
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// Stores info relevant to presenting media frames.
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class VideoInfo {
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private:
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void Init(int32_t aWidth, int32_t aHeight, bool aHasVideo)
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{
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mDisplay = nsIntSize(aWidth, aHeight);
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mStereoMode = StereoMode::MONO;
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mHasVideo = aHasVideo;
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// TODO: TrackInfo should be initialized by its specific codec decoder.
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// This following call should be removed once we have that implemented.
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mTrackInfo.Init(NS_LITERAL_STRING("2"), NS_LITERAL_STRING("main"),
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EmptyString(), EmptyString(), true, 2);
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}
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public:
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VideoInfo()
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{
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Init(0, 0, false);
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}
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VideoInfo(int32_t aWidth, int32_t aHeight)
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{
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Init(aWidth, aHeight, true);
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}
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// Size in pixels at which the video is rendered. This is after it has
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// been scaled by its aspect ratio.
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nsIntSize mDisplay;
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// Indicates the frame layout for single track stereo videos.
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StereoMode mStereoMode;
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// True if we have an active video bitstream.
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bool mHasVideo;
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TrackInfo mTrackInfo;
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};
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class AudioInfo {
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public:
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AudioInfo()
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: mRate(44100)
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, mChannels(2)
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, mHasAudio(false)
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{
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// TODO: TrackInfo should be initialized by its specific codec decoder.
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// This following call should be removed once we have that implemented.
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mTrackInfo.Init(NS_LITERAL_STRING("1"), NS_LITERAL_STRING("main"),
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EmptyString(), EmptyString(), true, 1);
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}
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// Sample rate.
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uint32_t mRate;
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// Number of audio channels.
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uint32_t mChannels;
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// True if we have an active audio bitstream.
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bool mHasAudio;
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TrackInfo mTrackInfo;
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};
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class EncryptionInfo {
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public:
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EncryptionInfo() : mIsEncrypted(false) {}
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// Encryption type to be passed to JS. Usually `cenc'.
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nsString mType;
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// Encryption data.
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nsTArray<uint8_t> mInitData;
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// True if the stream has encryption metadata
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bool mIsEncrypted;
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};
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class MediaInfo {
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public:
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bool HasVideo() const
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{
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return mVideo.mHasVideo;
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}
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bool HasAudio() const
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{
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return mAudio.mHasAudio;
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}
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bool IsEncrypted() const
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{
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return mCrypto.mIsEncrypted;
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}
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bool HasValidMedia() const
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{
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return HasVideo() || HasAudio();
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}
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// TODO: Store VideoInfo and AudioIndo in arrays to support multi-tracks.
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VideoInfo mVideo;
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AudioInfo mAudio;
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EncryptionInfo mCrypto;
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};
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} // namespace mozilla
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#endif // MediaInfo_h
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