private AtomTRAF GetTRAF(AtomMOOF pMoof, bool audio)
{
var pTrak = GetTRAK(audio);
if (pTrak == null) {
FATAL("No track found");
return null;
}
var trackId = (int) pTrak.Id;
if (trackId == 0) {
FATAL("No track found");
return null;
}
var trafs = pMoof.Trafs;
if (trafs.ContainsKey(trackId)) return trafs[trackId];
FATAL("No track found");
return null;
}
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;
}
private bool BuildMOOFFrames(AtomMOOF pMOOF, bool audio)
{
var pTraf = GetTRAF(pMOOF, audio);
if (pTraf == null) {
WARN("No {0} fragmented track found", audio ? "audio" : "video");
return true;
}
var pTfhd = (AtomTFHD ) pTraf.GetPath(1, TFHD);
if (pTfhd == null) {
FATAL("Invalid track. No TFHD atom");
return false;
}
var pTrack = GetTRAK(audio);
if (pTrack == null) {
FATAL("no {0} track", audio ? "Audio" : "Video");
return false;
}
var pMDHD = (AtomMdhd ) pTrack.GetPath(2, MDIA, MDHD);
if (pMDHD == null) {
FATAL("no MDHD");
return false;
}
var timeScale = pMDHD.TimeScale;
ulong totalTime = 0;
var absoluteOffset = pTfhd.BaseDataOffset;
var runs = pTraf.Runs;
foreach (var pRun in runs)
{
var samples = pRun.Samples;
ulong runSize = 0;
foreach (var pSample in samples)
{
MediaFrame frame;
frame.Start = (uint) (absoluteOffset + pRun.DataOffset + (long) runSize);
if (pSample.CompositionTimeOffset != 0) {
var doubleVal = (pSample.CompositionTimeOffset / (double) timeScale)*1000.00;
frame.CompositionOffset = (int) doubleVal;
} else {
frame.CompositionOffset = 0;
}
if (!audio) {
frame.IsKeyFrame = ((pSample.Flags & 0x00010000) == 0);
} else {
frame.IsKeyFrame = false;
}
frame.Length = pSample.Size;
frame.Type = audio ? MediaFrameType.Audio : MediaFrameType.Video;
frame.DeltaTime = (pSample.Duration / (double) timeScale)*1000.00;
frame.AbsoluteTime = (uint) (( totalTime / timeScale)* 1000);
frame.IsBinaryHeader = false;
totalTime += pSample.Duration;
_frames.Add(frame);
runSize += pSample.Size;
}
}
return true;
}
