// Given the date in the form of days since 2000 return the date in the ISO format
long ISODate::DateSince2000(long daysSince2000)
{
long yearCount;
long yearDayCount = 0;
// True if the year is a leap year
bool isLeapYear = false;
// Extract the year part
for(yearCount=0; yearCount<MAX_YEARS; yearCount++)
{
// If this year is a leap year
isLeapYear = IsLeapYear(yearCount+2000);
// If this year is a leap year
if(isLeapYear)
{
if(yearDayCount + DAYS_PER_LEAP_YEAR > daysSince2000)
break;
else
yearDayCount += (long)DAYS_PER_LEAP_YEAR;
}
else
{
if(yearDayCount + DAYS_PER_YEAR > daysSince2000)
break;
else
yearDayCount += (long)DAYS_PER_YEAR;
}
}
// Extract the month part
// The number of days since the start of this year
long monthDays = daysSince2000 - yearDayCount+1;
// The number of months we are looking at
long monthCount = 0;
// The day of month
long monthDayCount = 1;
// Loop up through the months till we find the first day greater than the day part
for(monthCount = 1; monthCount < 12; monthCount++)
{
// If the year we are dealing with is a leap year
if(isLeapYear)
{
// If we are going to cross the boundary
if(monthDayCount+LEAP_YEAR_MONTH_LENGTH[monthCount] > monthDays)
break;
else
monthDayCount+=LEAP_YEAR_MONTH_LENGTH[monthCount];
}
// This isn't a leap year
else
{
// If we are going to cross the boundary
if(monthDayCount+NON_LEAP_YEAR_MONTH_LENGTH[monthCount] > monthDays)
break;
else
monthDayCount+=NON_LEAP_YEAR_MONTH_LENGTH[monthCount];
}
}
// Now extract the day part
long dayOfMonth = 0;
if(isLeapYear)
{
dayOfMonth = monthDays - LEAP_YEAR_MONTH_DAYS[monthCount-1];
}
else
{
dayOfMonth = monthDays - NON_LEAP_YEAR_MONTH_DAYS[monthCount-1];
}
return ConvertToISO(dayOfMonth,monthCount,yearCount+2000);
}
void VorbisLMC::DecodeWork()
{
void *pOutBuffer;
Error Err;
int32 iValue;
int32 section, ret;
OutputInfo *info;
vorbis_info *vi;
uint32 bytesCopied, bytesPerFrame;
int bitrateLoops = 0;
assert(m_pPmi);
assert(m_pPmo);
m_pSleepSem->Wait();
m_pPmi->Wake();
Err = CanDecode();
if (Err == kError_Interrupt)
return;
if (Err != kError_NoErr)
{
m_pContext->log->Error("CanDecode returned false.\n");
if (m_decodeInfo.sendInfo)
{
ReportStatus(szCannotDecode);
m_pTarget->AcceptEvent(new Event(INFO_DoneOutputtingDueToError));
}
else
((EventBuffer *)m_pOutputBuffer)->AcceptEvent(new PMOErrorEvent());
return;
}
Err = ExtractMediaInfo();
if (Err == kError_Interrupt)
return;
if (IsError(Err))
{
m_pContext->log->Error("ExtractMediaInfo failed: %d\n", Err);
if (m_decodeInfo.sendInfo)
{
ReportStatus(szCannotDecode);
m_pTarget->AcceptEvent(new Event(INFO_DoneOutputtingDueToError));
}
else
((EventBuffer *)m_pOutputBuffer)->AcceptEvent(new PMOErrorEvent());
return;
}
if (!m_bInit)
{
Err = InitDecoder();
if (Err == kError_Interrupt)
return;
if (IsError(Err))
{
m_pContext->log->Error("Initializing the decoder failed: %d\n", Err);
ReportError("Initializing the decoder failed.");
return;
}
}
m_pContext->prefs->GetPrefInt32(kDecoderThreadPriorityPref, &iValue);
m_decoderThread->SetPriority(iValue);
bytesCopied = 0;
bytesPerFrame = 1;
for (m_frameCounter = 0; !m_bExit;)
{
if (m_bPause)
{
m_pPauseSem->Wait();
if (m_bExit)
break;
}
if (m_newPos >= 0)
{
ov_time_seek(&m_vf, (double)(m_newPos / iFramesPerSecond));
m_frameCounter = m_newPos - 1;
m_newPos = -1;
bytesCopied = bytesPerFrame;
}
if (bytesCopied >= bytesPerFrame)
{
m_frameCounter += bytesCopied / bytesPerFrame;
bytesCopied %= bytesPerFrame;
((EventBuffer *)m_pOutputBuffer)->AcceptEvent(
new PMOTimeInfoEvent(m_frameCounter));
bitrateLoops++;
if (bitrateLoops == iBitrateLoopsPerUpdate && m_decodeInfo.sendInfo)
{
int b;
b = ov_bitrate_instant(&m_vf),
vi = ov_info(&m_vf, -1);
VorbisInfoEvent *mie = new VorbisInfoEvent(b,
vi->channels,
vi->rate,
1. / (float)iFramesPerSecond);
m_pTarget->AcceptEvent(mie);
bitrateLoops = 0;
}
}
Err = m_pOutputBuffer->BeginWrite(pOutBuffer, iDecodeBlockSize);
if (Err == kError_Interrupt)
{
break;
}
if (Err == kError_BufferTooSmall)
{
if (Sleep())
break;
continue;
}
if (Err != kError_NoErr)
{
ReportError(szFailWrite);
m_pContext->log->Error("LMC: Cannot write to eventbuffer: %s (%d)\n",
m_szError, Err);
break;
}
section = -1;
ret = ov_read(&m_vf, (char *)pOutBuffer, iDecodeBlockSize,
0, 2, 1, §ion);
if (ret == 0)
{
m_pOutputBuffer->EndWrite(0);
break;
}
if (section != m_section)
{
vi = ov_info(&m_vf, -1);
info = new OutputInfo;
info->bits_per_sample = 16;
info->number_of_channels = m_channels = vi->channels;
info->samples_per_second = m_rate = vi->rate;
info->samples_per_frame = vi->rate / iFramesPerSecond;
info->max_buffer_size = 16384;
m_frameCounter = 0;
bytesCopied = 0;
bytesPerFrame = (vi->rate / iFramesPerSecond) *
sizeof(ogg_int16_t) * vi->channels;
m_section = section;
m_pOutputBuffer->EndWrite(0);
((EventBuffer *)m_pOutputBuffer)->AcceptEvent(new PMOInitEvent(info));
((EventBuffer *)m_pOutputBuffer)->AcceptEvent(
new PMOTimeInfoEvent(m_frameCounter));
Err = m_pOutputBuffer->BeginWrite(pOutBuffer, iDecodeBlockSize);
if (Err != kError_NoErr)
{
assert(0);
}
vorbis_comment *comment;
comment = ov_comment(&m_vf, -1);
if (comment)
{
PlaylistItem *plItem = m_pContext->plm->GetCurrentItem();
if (plItem)
{
MetaData mdata = plItem->GetMetaData();
string iso;
char *temp;
temp = vorbis_comment_query(comment, "title", 0);
if (temp)
{
iso = ConvertToISO(temp);
mdata.SetTitle(iso);
}
temp = vorbis_comment_query(comment, "artist", 0);
if (temp)
{
iso = ConvertToISO(temp);
mdata.SetArtist(iso);
}
temp = vorbis_comment_query(comment, "album", 0);
if (temp)
{
iso = ConvertToISO(temp);
mdata.SetAlbum(iso);
}
temp = vorbis_comment_query(comment, "tracknumber", 0);
if (temp)
mdata.SetTrack(atoi(temp));
plItem->SetMetaData(&mdata);
m_pContext->target->AcceptEvent(
new PlaylistCurrentItemInfoEvent(plItem,
m_pContext->plm));
}
}
}
if(ret <0)
ret=0; // hole/error in data - we can safely ignore this
m_pOutputBuffer->EndWrite(ret);
bytesCopied += ret;
}
((EventBuffer *)m_pOutputBuffer)->AcceptEvent(new PMOQuitEvent());
ov_clear(&m_vf);
return;
}
