atom_standard.cpp

完整的RTP RTSP代码库

    AddVersionAndFlags(); /* 0, 1 */
    ExpectChildAtom("hdlr", Required, OnlyOne);
    ExpectChildAtom("ilst", Required, OnlyOne);

  } else if (ATOMID(type) == ATOMID("mfhd")) {
    AddVersionAndFlags();	/* 0, 1 */
    AddProperty( /* 2 */
		new MP4Integer32Property("sequenceNumber"));

  } else if (ATOMID(type) == ATOMID("minf")) {
    ExpectChildAtom("vmhd", Optional, OnlyOne);
    ExpectChildAtom("smhd", Optional, OnlyOne);
    ExpectChildAtom("hmhd", Optional, OnlyOne);
    ExpectChildAtom("nmhd", Optional, OnlyOne);
    ExpectChildAtom("gmhd", Optional, OnlyOne);
    ExpectChildAtom("dinf", Required, OnlyOne);
    ExpectChildAtom("stbl", Required, OnlyOne);

  } else if (ATOMID(type) == ATOMID("moof")) {
    ExpectChildAtom("mfhd", Required, OnlyOne);
    ExpectChildAtom("traf", Optional, Many);

  } else if (ATOMID(type) == ATOMID("moov")) {
    ExpectChildAtom("mvhd", Required, OnlyOne);
    ExpectChildAtom("iods", Optional, OnlyOne);
    ExpectChildAtom("trak", Required, Many);
    ExpectChildAtom("udta", Optional, Many);
    ExpectChildAtom("mvex", Optional, OnlyOne);

  } else if (ATOMID(type) == ATOMID("mvex")) {
    ExpectChildAtom("trex", Required, Many);

  /*
   * n???
   */
  } else if (ATOMID(type) == ATOMID("nmhd")) {
    AddVersionAndFlags();

  } else if (ATOMID(type) == ATOMID("nump")) {
    AddProperty( // packets sent
		new MP4Integer64Property("packets"));
  /*
    * o???
    */
  } else if (ATOMID(type) == ATOMID("odkm")) {
    AddVersionAndFlags();
    ExpectChildAtom("ohdr", Required, OnlyOne);
  /*
   * p???
   */
  } else if (ATOMID(type) == ATOMID("payt")) {
    AddProperty(new MP4Integer32Property("payloadNumber"));
    AddProperty(new MP4StringProperty("rtpMap", Counted));

  } else if (ATOMID(type) == ATOMID("pinf")) {
    ExpectChildAtom("frma", Required, OnlyOne);
  } else if (ATOMID(type) == ATOMID("pmax")) {
    AddProperty( // max packet size 
		new MP4Integer32Property("bytes"));
  } else if (ATOMID(type) == ATOMID("pgap") ||
	     ATOMID(type) == ATOMID("plID") ||
	     ATOMID(type) == ATOMID("purd") ||
	     ATOMID(type) == ATOMID("rtng")) {
    ExpectChildAtom("data", Required, OnlyOne);
  /*
   * s???
   */
  } else if (ATOMID(type) == ATOMID("schi")) {
    // not sure if this is child atoms or table of boxes
    // get clarification on spec 9.1.2.5
    ExpectChildAtom("odkm", Optional, OnlyOne);
    ExpectChildAtom("iKMS", Optional, OnlyOne);
    ExpectChildAtom("iSFM", Optional, OnlyOne);

  } else if (ATOMID(type) == ATOMID("schm")) {
    AddVersionAndFlags(); /* 0, 1 */
    AddProperty( /* 2 */
                new MP4Integer32Property("scheme_type"));
    AddProperty( /* 3 */
	        new MP4Integer32Property("scheme_version"));
    // browser URI if flags set, TODO

  } else if (ATOMID(type) == ATOMID("sinf")) {
    ExpectChildAtom("frma", Required, OnlyOne);
    ExpectChildAtom("imif", Optional, OnlyOne);
    ExpectChildAtom("schm", Optional, OnlyOne);
    ExpectChildAtom("schi", Optional, OnlyOne);

  } else if (ATOMID(type) == ATOMID("smhd")) {
    AddVersionAndFlags();
    AddReserved("reserved", 4);

  } else if (ATOMID(type) == ATOMID("snro")) {
    AddProperty(new MP4Integer32Property("offset"));

  } else if (ATOMID(type) == ATOMID("stco")) {
    AddVersionAndFlags();

    MP4Integer32Property* pCount = new MP4Integer32Property("entryCount"); 
    AddProperty(pCount);

    MP4TableProperty* pTable = new MP4TableProperty("entries", pCount);
    AddProperty(pTable);

    pTable->AddProperty(new MP4Integer32Property("chunkOffset"));

  } else if (ATOMID(type) == ATOMID("stsh")) {
    AddVersionAndFlags();

    MP4Integer32Property* pCount = new MP4Integer32Property("entryCount"); 
    AddProperty(pCount);

    MP4TableProperty* pTable = new MP4TableProperty("entries", pCount);
    AddProperty(pTable);

    pTable->AddProperty(new MP4Integer32Property("shadowedSampleNumber"));
    pTable->AddProperty(new MP4Integer32Property("syncSampleNumber"));

  } else if (ATOMID(type) == ATOMID("stss")) {
    AddVersionAndFlags();

    MP4Integer32Property* pCount = new MP4Integer32Property("entryCount"); 
    AddProperty(pCount);

    MP4TableProperty* pTable = new MP4TableProperty("entries", pCount);
    AddProperty(pTable);

    pTable->AddProperty(new MP4Integer32Property("sampleNumber"));

  } else if (ATOMID(type) == ATOMID("stts")) {
    AddVersionAndFlags();
    MP4Integer32Property* pCount = new MP4Integer32Property("entryCount"); 
    AddProperty(pCount);

    MP4TableProperty* pTable = new MP4TableProperty("entries", pCount);
    AddProperty(pTable);

    pTable->AddProperty(new MP4Integer32Property("sampleCount"));
    pTable->AddProperty(new MP4Integer32Property("sampleDelta"));
  } else if (ATOMID(type) == ATOMID("sfID") ||
	     ATOMID(type) == ATOMID("stik")) {
    ExpectChildAtom("data", Required, OnlyOne);
  /*
   * t???
   */
  } else if (ATOMID(type) == ATOMID("tims")) {
    AddProperty( 
		new MP4Integer32Property("timeScale"));

  } else if (ATOMID(type) == ATOMID("tmin")) {
    AddProperty( // min relative xmit time
		new MP4Integer32Property("milliSecs"));

  } else if (ATOMID(type) == ATOMID("tmax")) {
    AddProperty( // max relative xmit time
		new MP4Integer32Property("milliSecs"));

  } else if (ATOMID(type) == ATOMID("tmpo")) { // iTunes
    ExpectChildAtom("data", Required, OnlyOne);

  } else if (ATOMID(type) == ATOMID("traf")) {
    ExpectChildAtom("tfhd", Required, OnlyOne);
    ExpectChildAtom("trun", Optional, Many);

  } else if (ATOMID(type) == ATOMID("trak")) {
    ExpectChildAtom("tkhd", Required, OnlyOne);
    ExpectChildAtom("tref", Optional, OnlyOne);
    ExpectChildAtom("edts", Optional, OnlyOne);
    ExpectChildAtom("mdia", Required, OnlyOne);
    ExpectChildAtom("udta", Optional, Many);

  } else if (ATOMID(type) == ATOMID("tref")) {
    ExpectChildAtom("chap", Optional, OnlyOne);
    ExpectChildAtom("dpnd", Optional, OnlyOne);
    ExpectChildAtom("hint", Optional, OnlyOne);
    ExpectChildAtom("ipir", Optional, OnlyOne);
    ExpectChildAtom("mpod", Optional, OnlyOne);
    ExpectChildAtom("sync", Optional, OnlyOne);

  } else if (ATOMID(type) == ATOMID("trex")) {
    AddVersionAndFlags();	/* 0, 1 */
    AddProperty( /* 2 */
		new MP4Integer32Property("trackId"));
    AddProperty( /* 3 */
		new MP4Integer32Property("defaultSampleDesriptionIndex"));
    AddProperty( /* 4 */
		new MP4Integer32Property("defaultSampleDuration"));
    AddProperty( /* 5 */
		new MP4Integer32Property("defaultSampleSize"));
    AddProperty( /* 6 */
		new MP4Integer32Property("defaultSampleFlags"));

  } else if (ATOMID(type) == ATOMID("trkn")) { // iTunes
    ExpectChildAtom("data", Required, OnlyOne);

  } else if (ATOMID(type) == ATOMID("trpy") ||
	     ATOMID(type) == ATOMID("tpyl")) {
    AddProperty( // bytes sent including RTP headers
		new MP4Integer64Property("bytes"));

  } else if (ATOMID(type) == ATOMID("tsro")) {
    AddProperty( 
		new MP4Integer32Property("offset"));
  } else if (ATOMID(type) == ATOMID("wave")) {
    ExpectChildAtom("esds", Required, OnlyOne);
  /*
   * copyright???
   */
  } else if (ATOMID(type) == ATOMID(art) ||
	     ATOMID(type) == ATOMID(wrt) ||
	     ATOMID(type) == ATOMID(alb) ||
	     ATOMID(type) == ATOMID(day) ||
	     ATOMID(type) == ATOMID(too) ||
	     ATOMID(type) == ATOMID(gen) ||
	     ATOMID(type) == ATOMID(grp)) { /* Apple iTunes */
    ExpectChildAtom("data", Required, OnlyOne);
  /*
   * ---- 
   */
  } else if (ATOMID(type) == ATOMID("----")) { /* Apple iTunes */
    ExpectChildAtom("mean", Required, OnlyOne);
    ExpectChildAtom("name", Required, OnlyOne);
    ExpectChildAtom("data", Required, OnlyOne);
  } else {
  /*
   * default - unknown type
   */
    SetUnknownType(true);
  }
  
}