BOOL ovd_parse_stream(ovd_stream_buf* buf)
{
ovd_handle* handle = (ovd_handle*)buf->handle;
ogg_sync_wrote(handle->oy, buf->len);
if (ogg_sync_pageout(handle->oy, &handle->og) != 1)
goto fail;
// ogg_stream_init(&handle->os, ogg_page_serialno(&handle->og));
handle->os = ogg_stream_create(ogg_page_serialno(&handle->og));
vorbis_info_init(&handle->vi);
vorbis_comment_init(&handle->vc);
if (ogg_stream_pagein(handle->os, &handle->og) < 0)
goto fail;
if (ogg_stream_packetout(handle->os,&handle->op) != 1)
goto fail;
if (vorbis_synthesis_headerin(&handle->vi, &handle->vc, &handle->op) < 0)
goto fail;
handle->init = 0;
handle->eof = 0;
ovd_header_init(handle);
buf->buf = ogg_sync_bufferin(handle->oy, OVD_STREAM_BUF_LEN);
buf->len = OVD_STREAM_BUF_LEN;
return TRUE;
fail:
// ogg_sync_init(&handle->oy);
handle->oy = ogg_sync_create();
buf->buf = ogg_sync_bufferin(handle->oy, OVD_STREAM_BUF_LEN);
buf->len = OVD_STREAM_BUF_LEN;
return FALSE;
}
BOOL ovd_reparse_stream(ovd_stream_buf* buf)
{
ovd_handle* handle = (ovd_handle*)buf->handle;
if (buf->len) {
ogg_sync_wrote(handle->oy, buf->len);
int result = ogg_sync_pageout(handle->oy, &handle->og);
if (result == 0) {
buf->len = OVD_STREAM_BUF_LEN;
return TRUE;
}
else if (result < 0)
return FALSE;
}
// ogg_stream_init(&handle->os, ogg_page_serialno(&handle->og));
handle->os = ogg_stream_create(ogg_page_serialno(&handle->og));
vorbis_info_init(&handle->vi);
vorbis_comment_init(&handle->vc);
if (ogg_stream_pagein(handle->os, &handle->og) < 0)
return FALSE;
if (ogg_stream_packetout(handle->os,&handle->op) != 1)
return FALSE;
if (vorbis_synthesis_headerin(&handle->vi, &handle->vc, &handle->op) < 0)
return FALSE;
handle->init = 0;
handle->eof = 0;
ovd_header_init(handle);
buf->buf = ogg_sync_bufferin(handle->oy, OVD_STREAM_BUF_LEN);
buf->len = OVD_STREAM_BUF_LEN;
return TRUE;
}
static int FillQueue(ogg* p,format_reader* Reader)
{
for (;;)
{
int Bytes = ogg_sync_pageseek(p->OggSync,&p->OggPage);
if (Bytes == 0) // need more data
{
int Result;
format_buffer* Buffer;
if (!Reader->BufferAvailable && (!p->Format.SyncMode || p->Format.SyncRead<=0))
return ERR_NEED_MORE_DATA;
Buffer = Format_BufferRemove(Reader);
if (!Buffer && p->Format.SyncMode && p->Format.SyncRead>0 && Format_ReadBuffer(Reader,0))
Buffer = Format_BufferRemove(Reader);
Result = AddBuffer(p,Buffer);
if (Result != ERR_NONE)
return Result;
}
else
if (Bytes < 0)
Reader->FilePos -= Bytes;
else
if (Bytes > 0)
{
int StreamNo;
oggstream* s;
int Id;
Reader->FilePos += Bytes;
Id = ogg_page_serialno(&p->OggPage);
DEBUG_MSG4(DEBUG_FORMAT,T("OGG Page id:%d size:%d gran:%d filepos:%d"),Id,p->OggPage.body_len,(int)ogg_page_granulepos(&p->OggPage),Reader->FilePos - Bytes);
for (StreamNo=0;StreamNo<p->Format.StreamCount;++StreamNo)
if (p->Format.Streams[StreamNo]->Id == Id)
break;
if (StreamNo==p->Format.StreamCount)
{
// check for restarted audio http streaming (comments changed)
if (p->Format.StreamCount==1 &&
p->Format.Streams[0]->Format.Type == PACKET_AUDIO &&
p->Format.Streams[0]->LastTime>0)
{
StreamNo = 0;
s = (oggstream*) p->Format.Streams[0];
if (s->Vorbis)
{
// vorbis decoder have to release s->Info
s->Stream.Format.Extra = NULL;
s->Stream.Format.ExtraLength = 0;
ConnectionUpdate((node*)&p->Format,FORMAT_STREAM+0,s->Stream.Pin.Node,s->Stream.Pin.No);
}
FreeStream(p,s);
}
else
{
s = (oggstream*) Format_AddStream(&p->Format,sizeof(oggstream));
if (!s) continue;
}
// init stream
s->Stream.Id = Id;
s->OggStream = ogg_stream_create(Id);
s->NeedMorePage = 1;
s->MediaTime = 0;
s->Invalid = 0;
s->Vorbis = 0;
s->Native = 0;
s->PacketNo = 0;
vorbis_info_init(&s->Info);
vorbis_comment_init(&s->Comment);
}
s = (oggstream*) p->Format.Streams[StreamNo];
if (s->Invalid) // drop invalid streams
continue;
if (s->PacketNo>=3)
{
if (!s->Stream.Pin.Node) // drop unused streams
continue;
if (p->Format.InSeek)
{
// reftime needed for SeekByPacket
if ((s->MediaTime = ogg_page_granulepos(&p->OggPage)) != -1)
{
// no need for GlobalOffset here
s->Stream.LastTime = (tick_t)(s->MediaTime * s->MediaRateDen / s->MediaRateNum);
if (s->Stream.Format.Type == PACKET_AUDIO)
{
s->Stream.LastTime += p->Format.AVOffset;
if (s->Stream.LastTime < 0)
s->Stream.LastTime = 0;
}
}
}
}
// add page to stream
if (ogg_stream_pagein(s->OggStream,&p->OggPage) >= 0)
{
if (s->PacketNo<3) // header packet needed?
{
int i = ogg_stream_packetout(s->OggStream,&s->OggPacket);
if (i == 0) // stream needs more pages
continue;
if (++s->PacketNo==1) // first packet?
{
ogg_reference* Ref;
const void* Data;
int Length;
if (i < 0)
{
// first header packet is a must have
s->Invalid = 1;
continue;
}
if (p->Format.UseBufferBlock)
{
for (Length=0,Ref=s->OggPacket.packet;Ref;Ref=Ref->next)
Length += Ref->length;
if (s->Stream.BufferBlockLength<Length && !Format_AllocBufferBlock(&p->Format,&s->Stream,Length))
{
Length = 0;
Data = NULL;
}
else
{
for (Length=0,Ref=s->OggPacket.packet;Ref;Ref=Ref->next)
{
WriteBlock(&s->Stream.BufferBlock,Length,Ref->buffer->data + Ref->begin,Ref->length);
Length += Ref->length;
}
Data = s->Stream.BufferBlock.Ptr;
}
}
else
{
BufferDrop(&s->Stream.BufferMem);
for (Ref=s->OggPacket.packet;Ref;Ref=Ref->next)
BufferWrite(&s->Stream.BufferMem,Ref->buffer->data + Ref->begin, Ref->length, 16384);
Data = s->Stream.BufferMem.Data;
Length = s->Stream.BufferMem.WritePos;
}
if (OGMHeader(p,s,(char*)Data,Length) || SpeexHeader(p,s,(char*)Data,Length))
{
PacketFormatDefault(&s->Stream.Format);
s->PacketNo = 3; // no more headers
}
else
if (!VorbisHeader(p,s))
{
s->Invalid = 1;
continue;
}
while (s->MediaRateNum > (1<<30))
{
s->MediaRateDen >>= 1;
s->MediaRateNum >>= 1;
}
Format_PrepairStream(&p->Format,&s->Stream);
continue;
}
else
{
assert(s->Vorbis);
// error in second or third header packet will not cause fatal error
vorbis_synthesis_headerin(&s->Info,&s->Comment,&s->OggPacket);
if (s->PacketNo == 3)
{
// got the three header packets: reinit codec with vorbis_info
s->Stream.Format.Extra = &s->Info;
s->Stream.Format.ExtraLength = -1;
ConnectionUpdate((node*)&p->Format,FORMAT_STREAM+StreamNo,s->Stream.Pin.Node,s->Stream.Pin.No);
SendComments(s);
}
continue;
}
}
