public override void AtomCreated(BaseAtom atom)
{
switch (atom.Type)
{
case ESDS:
_atomESDS = (AtomESDS)atom;
break;
case WAVE:
_atomWAVE = (AtomWAVE)atom;
break;
case CHAN:
// _atomCHAN = (AtomCHAN)atom;
break;
}
}
public override void AtomCreated(BaseAtom atom)
{
switch (atom.Type)
{
case MP4A:
_atomMp4A = atom as AtomMP4A;
return;
case ESDS:
_atomEsds = atom as AtomESDS;
return;
case NULL:
return;
default:
return;
}
}
public override void AtomCreated(BaseAtom atom)
{
switch (atom.Type)
{
case ESDS:
_atomESDS = (AtomESDS)atom;
break;
case WAVE:
_atomWAVE = (AtomWAVE)atom;
break;
case CHAN:
// _atomCHAN = (AtomCHAN)atom;
break;
}
}
public override void AtomCreated(BaseAtom atom)
{
switch (atom.Type)
{
case MP4A:
_atomMp4A = atom as AtomMP4A;
return;
case ESDS:
_atomEsds = atom as AtomESDS;
return;
case NULL:
return;
default:
return;
}
}
public BaseAtom ReadAtom(IBoxContainer parentAtom)
{
BaseAtom atom = null;
uint type = 0;
var currentPos = MediaFile.Position;
long size = MediaFile.Br.ReadUInt32();
if (size == 0)
{
atom = new AtomNULL(this, type, size, currentPos)
{
Parent = parentAtom
};
return(atom);
}
type = MediaFile.Br.ReadUInt32();
if (size == 1)
{
size = MediaFile.Br.ReadInt64();
if (size == 0)
{
atom = new AtomNULL(this, type, size, currentPos)
{
Parent = parentAtom
};
return(atom);
}
}
switch (type)
{
case FTYP:
atom = new AtomFTYP(this, size, currentPos);
break;
case MOOV:
atom = new AtomMOOV(this, type, size, currentPos);
break;
case MOOF:
atom = new AtomMOOF(this, type, size, currentPos);
break;
case MVEX:
atom = new AtomMVEX(this, type, size, currentPos);
break;
case MVHD:
atom = new AtomMVHD(this, type, size, currentPos);
break;
case MFHD:
atom = new AtomMFHD(this, type, size, currentPos);
break;
case TRAK:
atom = new AtomTRAK(this, type, size, currentPos);
break;
case TRAF:
atom = new AtomTRAF(this, type, size, currentPos);
break;
case TREX:
atom = new AtomTREX(this, type, size, currentPos);
break;
case TRUN:
atom = new AtomTRUN(this, type, size, currentPos);
break;
case TKHD:
atom = new AtomTKHD(this, type, size, currentPos);
break;
case TFHD:
atom = new AtomTFHD(this, type, size, currentPos);
break;
case MDIA:
atom = new AtomMDIA(this, type, size, currentPos);
break;
case MDHD:
atom = new AtomMdhd(this, type, size, currentPos);
break;
case HDLR:
atom = new AtomHdlr(this, type, size, currentPos);
break;
case MINF:
atom = new AtomMINF(this, type, size, currentPos);
break;
case SMHD:
atom = new AtomSMHD(this, type, size, currentPos);
break;
case DINF:
atom = new AtomDINF(this, type, size, currentPos);
break;
case STBL:
atom = new AtomSTBL(this, type, size, currentPos);
break;
case VMHD:
atom = new AtomVMHD(this, type, size, currentPos);
break;
case DREF:
atom = new AtomDREF(this, type, size, currentPos);
break;
case STSD:
atom = new AtomSTSD(this, type, size, currentPos);
break;
case STTS:
atom = new AtomSTTS(this, type, size, currentPos);
break;
case STSC:
atom = new AtomSTSC(this, type, size, currentPos);
break;
case STSZ:
atom = new AtomSTSZ(this, type, size, currentPos);
break;
case STCO:
atom = new AtomSTCO(this, type, size, currentPos);
break;
case CTTS:
atom = new AtomCTTS(this, type, size, currentPos);
break;
case STSS:
atom = new AtomSTSS(this, type, size, currentPos);
break;
case URL:
atom = new AtomURL(this, type, size, currentPos);
break;
case MP4A:
atom = new AtomMP4A(this, type, size, currentPos);
break;
case AVC1:
atom = new AtomAVC1(this, type, size, currentPos);
break;
case ESDS:
atom = new AtomESDS(this, type, size, currentPos);
break;
case AVCC:
atom = new AtomAVCC(this, type, size, currentPos);
break;
case UDTA:
atom = new AtomUDTA(this, type, size, currentPos);
break;
case WAVE:
atom = new AtomWAVE(this, type, size, currentPos);
break;
case META:
atom = new AtomMETA(this, type, size, currentPos);
break;
case NULL:
atom = new AtomNULL(this, type, size, currentPos);
break;
case ILST:
atom = new AtomILST(this, type, size, currentPos);
break;
case DATA:
atom = new AtomDATA(this, type, size, currentPos);
break;
case CO64:
atom = new AtomCO64(this, type, size, currentPos);
break;
case _COM:
case NAME:
case COVR:
case AART:
case _WRT:
case _GRP:
case _LYR:
case _NAM:
case _ART1:
case _ART2:
case _PRT:
case _TOO:
case _DAY:
case _CMT:
case _CPY:
case _DES:
case _ALB:
case TRKN:
case CPIL:
case PGAP:
case TMPO:
case GNRE:
case DISK:
case _GEN:
case DESC:
case TVSH:
case TVEN:
case TVSN:
case TVES:
atom = new AtomMetaField(this, type, size, currentPos);
break;
default:
{
atom = new IgnoredAtom(this, type, size, currentPos);
break;
}
}
atom.Parent = parentAtom;
atom.Read();
if (currentPos + atom.Size != MediaFile.Position)
{
FATAL("atom start:{0};Atom Size:{1};currentPostion:{2}", currentPos, atom.Size, MediaFile.Position);
}
return(atom);
}
protected override bool BuildFrames()
{
_frames.Clear();
AtomTRAK track;
AtomAVCC avcc = null;
if (null != (track = GetTRAK(false)))
{
avcc = (AtomAVCC)track.GetPath(6, MDIA, MINF,
STBL, STSD, AVC1, AVCC);
}
AtomESDS esds = null;
if (null != (track = GetTRAK(true)))
{
esds = (AtomESDS)track.GetPath(6, MDIA, MINF,
STBL, STSD, MP4A, ESDS) ?? (AtomESDS)track.GetPath(7, MDIA, MINF,
STBL, STSD, MP4A, WAVE, ESDS);
}
if (avcc != null)
{
if (!BuildMOOVFrames(false))
{
return(false);
}
}
foreach (var moof in _moof)
{
if (!BuildMOOFFrames(moof, true))
{
FATAL("Unable to build audio frames from MOOF");
return(false);
}
if (!BuildMOOFFrames(moof, false))
{
FATAL("Unable to build video frames from MOOF");
return(false);
}
}
_frames.Sort(CompareFrames);
if (esds != null)
{
MediaFrame audioHeader;
audioHeader.Type = MediaFrameType.Audio;
audioHeader.IsBinaryHeader = true;
audioHeader.IsKeyFrame = true;
audioHeader.Length = esds.ExtraDataLength;
audioHeader.AbsoluteTime = 0;
audioHeader.Start = (uint)esds.ExtraDataStart;
audioHeader.DeltaTime = 0;
audioHeader.CompositionOffset = 0;
MediaFile.SeekTo(audioHeader.Start);
var raw = MediaFile.Br.ReadBytes((int)audioHeader.Length);
_streamCapabilities.InitAudioAAC(new MemoryStream(raw), raw.Length);
_frames.Add(audioHeader);
}
else
{
if ((track = GetTRAK(true)) != null)
{
var mp3 = track.GetPath(5, MDIA, MINF,
STBL, STSD, MP3);
if (mp3 != null)
{
_streamCapabilities.AudioCodecId = AudioCodec.Mp3;
}
}
}
if (avcc != null)
{
MediaFrame videoHeader;
videoHeader.Type = MediaFrameType.Video;
videoHeader.IsBinaryHeader = true;
videoHeader.IsKeyFrame = true;
videoHeader.Length = (uint)avcc.ExtraDataLength;
videoHeader.AbsoluteTime = 0;
videoHeader.Start = (uint)avcc.ExtraDataStart;
videoHeader.DeltaTime = 0;
videoHeader.CompositionOffset = 0;
MediaFile.SeekTo(videoHeader.Start);
var raw = MediaFile.Br.ReadBytes((int)videoHeader.Length);
if (raw.Length < 8)
{
FATAL("Invalid AVC codec bytes");
return(false);
}
var spsLength = raw.ReadUShort(6);
var ppsLength = raw.ReadUShort(8 + spsLength + 1);
var psps = new byte[spsLength];
Buffer.BlockCopy(raw, 8, psps, 0, (int)spsLength);
var pps = new byte[ppsLength];
Buffer.BlockCopy(raw, 8 + spsLength + 3, psps, 0, ppsLength);
_streamCapabilities.InitVideoH264(psps, pps);
_frames.Add(videoHeader);
}
return(true);
}
