public int fetchHeaders(final Info info, final Comment comment, final int[] serialno, Page page) {
if (page == null) {
page = new Page();
final int retValue = this.getNextPage(page, this.m_chunkSize);
if (retValue == -128) {
return -128;
}
if (retValue < 0) {
return -130;
}
}
if (serialno != null) {
serialno[0] = page.serialno();
}
this.m_oggStreamState.init(page.serialno());
info.init();
comment.init();
final Packet packet = new Packet();
int i = 0;
while (i < 3) {
this.m_oggStreamState.pagein(page);
while (i < 3) {
final int result = this.m_oggStreamState.packetout(packet);
if (result == 0) {
break;
}
if (result == -1) {
info.clear();
this.m_oggStreamState.clear();
return -1;
}
if (info.synthesis_headerin(comment, packet) != 0) {
info.clear();
this.m_oggStreamState.clear();
return -1;
}
++i;
}
if (i < 3 && this.getNextPage(page, 1L) < 0) {
info.clear();
this.m_oggStreamState.clear();
return -1;
}
}
return 0;
}
/**
* Creates a new comment. Comments must be part of an article.
*
* @param text The comment text.
* @param article The article.
* @return The new comment.
*/
public Comment createComment(String text, Article article) {
Comment c = new Comment(text);
c.init(ontology, article);
return c;
}
/**
* Uses the local ogg_stream storage in vf; this is important for non-streaming input sources.
*
* @param vi the info block
* @param vc comment block
* @param serialno serial numbers
* @param ogPtr ogg pointer page
* @return success codes OV_*
*/
int fetchHeaders(Info vi, Comment vc, int[] serialno, Page ogPtr) {
Page og = new Page();
Packet op = new Packet();
int ret;
if (ogPtr == null) {
ret = getNextPage(og, CHUNKSIZE);
if (ret == OV_EREAD) {
return OV_EREAD;
}
if (ret < 0) {
return OV_ENOTVORBIS;
}
ogPtr = og;
}
if (serialno != null) {
serialno[0] = ogPtr.serialno();
}
os.init(ogPtr.serialno());
// extract the initial header from the first page and verify that the
// Ogg bitstream is in fact Vorbis data
vi.init();
vc.init();
int i = 0;
while (i < 3) {
os.pagein(ogPtr);
while (i < 3) {
int result = os.packetout(op);
if (result == 0) {
break;
}
if (result == -1) {
vi.clear();
vc.clear();
os.clear();
return -1;
}
if (vi.synthesisHeaderin(vc, op) != 0) {
vi.clear();
vc.clear();
os.clear();
return -1;
}
i++;
}
if (i < 3) {
if (getNextPage(ogPtr, 1) < 0) {
vi.clear();
vc.clear();
os.clear();
return -1;
}
}
}
return 0;
}