int preview_helper(const QString &chanid, const QString &starttime,
long long previewFrameNumber, long long previewSeconds,
const QSize &previewSize,
const QString &infile, const QString &outfile)
{
// Lower scheduling priority, to avoid problems with recordings.
if (setpriority(PRIO_PROCESS, 0, 9))
VERBOSE(VB_GENERAL, "Setting priority failed." + ENO);
ProgramInfo *pginfo = NULL;
if (!chanid.isEmpty() && !starttime.isEmpty())
{
pginfo = ProgramInfo::GetProgramFromRecorded(chanid, starttime);
if (!pginfo)
{
VERBOSE(VB_IMPORTANT, QString(
"Can not locate recording made on '%1' at '%2'")
.arg(chanid).arg(starttime));
return GENERIC_EXIT_NOT_OK;
}
}
else if (!infile.isEmpty())
{
pginfo = ProgramInfo::GetProgramFromBasename(infile);
if (!pginfo)
{
VERBOSE(VB_IMPORTANT, QString(
"Can not locate recording '%1'").arg(infile));
return GENERIC_EXIT_NOT_OK;
}
}
else
{
VERBOSE(VB_IMPORTANT, "Can not locate recording for preview");
return GENERIC_EXIT_NOT_OK;
}
PreviewGenerator *previewgen = new PreviewGenerator(pginfo, true);
if (previewFrameNumber >= 0)
previewgen->SetPreviewTimeAsFrameNumber(previewFrameNumber);
if (previewSeconds >= 0)
previewgen->SetPreviewTimeAsSeconds(previewSeconds);
previewgen->SetOutputSize(previewSize);
previewgen->SetOutputFilename(outfile);
previewgen->RunReal();
previewgen->deleteLater();
delete pginfo;
return GENERIC_EXIT_OK;
}
QFileInfo Content::GetPreviewImage( int nChanId,
const QDateTime &recstarttsRaw,
int nWidth,
int nHeight,
int nSecsIn )
{
if (!recstarttsRaw.isValid())
{
QString sMsg = QString("GetPreviewImage: bad start time '%1'")
.arg(MythDate::toString(recstarttsRaw, MythDate::ISODate));
LOG(VB_GENERAL, LOG_ERR, sMsg);
throw sMsg;
}
QDateTime recstartts = recstarttsRaw.toUTC();
// ----------------------------------------------------------------------
// Read Recording From Database
// ----------------------------------------------------------------------
ProgramInfo pginfo( (uint)nChanId, recstartts);
if (!pginfo.GetChanID())
{
LOG(VB_GENERAL, LOG_ERR,
QString("GetPreviewImage: No recording for '%1'")
.arg(ProgramInfo::MakeUniqueKey(nChanId, recstartts)));
return QFileInfo();
}
if (pginfo.GetHostname().toLower() != gCoreContext->GetHostName().toLower())
{
QString sMsg =
QString("GetPreviewImage: Wrong Host '%1' request from '%2'")
.arg( gCoreContext->GetHostName())
.arg( pginfo.GetHostname() );
LOG(VB_UPNP, LOG_ERR, sMsg);
throw HttpRedirectException( pginfo.GetHostname() );
}
QString sFileName = GetPlaybackURL(&pginfo);
// ----------------------------------------------------------------------
// check to see if default preview image is already created.
// ----------------------------------------------------------------------
QString sPreviewFileName;
if (nSecsIn <= 0)
{
nSecsIn = -1;
sPreviewFileName = sFileName + ".png";
}
else
{
sPreviewFileName = QString("%1.%2.png").arg(sFileName).arg(nSecsIn);
}
if (!QFile::exists( sPreviewFileName ))
{
// ------------------------------------------------------------------
// Must generate Preview Image, Generate Image and save.
// ------------------------------------------------------------------
if (!pginfo.IsLocal() && sFileName.startsWith("/"))
pginfo.SetPathname(sFileName);
if (!pginfo.IsLocal())
return QFileInfo();
PreviewGenerator *previewgen = new PreviewGenerator( &pginfo,
QString(),
PreviewGenerator::kLocal);
previewgen->SetPreviewTimeAsSeconds( nSecsIn );
previewgen->SetOutputFilename ( sPreviewFileName );
bool ok = previewgen->Run();
previewgen->deleteLater();
if (!ok)
return QFileInfo();
}
float fAspect = 0.0;
QImage *pImage = new QImage(sPreviewFileName);
if (!pImage)
return QFileInfo();
if (fAspect <= 0)
fAspect = (float)(pImage->width()) / pImage->height();
if (fAspect == 0)
{
delete pImage;
return QFileInfo();
}
bool bDefaultPixmap = (nWidth == 0) && (nHeight == 0);
if ( nWidth == 0 )
nWidth = (int)rint(nHeight * fAspect);
if ( nHeight == 0 )
nHeight = (int)rint(nWidth / fAspect);
QString sNewFileName;
if (bDefaultPixmap)
sNewFileName = sPreviewFileName;
else
sNewFileName = QString( "%1.%2.%3x%4.png" )
.arg( sFileName )
.arg( nSecsIn )
.arg( nWidth )
.arg( nHeight );
// ----------------------------------------------------------------------
// check to see if scaled preview image is already created.
// ----------------------------------------------------------------------
if (QFile::exists( sNewFileName ))
{
delete pImage;
return QFileInfo( sNewFileName );
}
PreviewGenerator *previewgen = new PreviewGenerator( &pginfo,
QString(),
PreviewGenerator::kLocal);
previewgen->SetPreviewTimeAsSeconds( nSecsIn );
previewgen->SetOutputFilename ( sNewFileName );
previewgen->SetOutputSize (QSize(nWidth,nHeight));
bool ok = previewgen->Run();
previewgen->deleteLater();
if (!ok)
return QFileInfo();
delete pImage;
return QFileInfo( sNewFileName );
}
int preview_helper(uint chanid, QDateTime starttime,
long long previewFrameNumber, long long previewSeconds,
const QSize &previewSize,
const QString &infile, const QString &outfile)
{
// Lower scheduling priority, to avoid problems with recordings.
if (setpriority(PRIO_PROCESS, 0, 9))
LOG(VB_GENERAL, LOG_ERR, "Setting priority failed." + ENO);
if (!chanid || !starttime.isValid())
ProgramInfo::QueryKeyFromPathname(infile, chanid, starttime);
ProgramInfo *pginfo = NULL;
if (chanid && starttime.isValid())
{
pginfo = new ProgramInfo(chanid, starttime);
if (!pginfo->GetChanID())
{
LOG(VB_GENERAL, LOG_ERR,
QString("Cannot locate recording made on '%1' at '%2'")
.arg(chanid).arg(starttime.toString(Qt::ISODate)));
delete pginfo;
return GENERIC_EXIT_NOT_OK;
}
pginfo->SetPathname(pginfo->GetPlaybackURL(false, true));
}
else if (!infile.isEmpty())
{
if (!QFileInfo(infile).isReadable())
{
LOG(VB_GENERAL, LOG_ERR,
QString("Cannot read this file '%1'").arg(infile));
return GENERIC_EXIT_NOT_OK;
}
pginfo = new ProgramInfo(
infile, ""/*plot*/, ""/*title*/, ""/*subtitle*/, ""/*director*/,
0/*season*/, 0/*episode*/, ""/*inetref*/, 120/*length_in_minutes*/,
1895/*year*/, ""/*id*/);
}
else
{
LOG(VB_GENERAL, LOG_ERR, "Cannot locate recording to preview");
return GENERIC_EXIT_NOT_OK;
}
PreviewGenerator *previewgen = new PreviewGenerator(
pginfo, QString(), PreviewGenerator::kLocal);
if (previewFrameNumber >= 0)
previewgen->SetPreviewTimeAsFrameNumber(previewFrameNumber);
if (previewSeconds >= 0)
previewgen->SetPreviewTimeAsSeconds(previewSeconds);
previewgen->SetOutputSize(previewSize);
previewgen->SetOutputFilename(outfile);
bool ok = previewgen->RunReal();
previewgen->deleteLater();
delete pginfo;
return (ok) ? GENERIC_EXIT_OK : GENERIC_EXIT_NOT_OK;
}
int preview_helper(const QString &_chanid, const QString &starttime,
long long previewFrameNumber, long long previewSeconds,
const QSize &previewSize,
const QString &infile, const QString &outfile)
{
// Lower scheduling priority, to avoid problems with recordings.
if (setpriority(PRIO_PROCESS, 0, 9))
VERBOSE(VB_GENERAL, "Setting priority failed." + ENO);
uint chanid = _chanid.toUInt();
QDateTime recstartts = myth_dt_from_string(starttime);
if (!chanid || !recstartts.isValid())
ProgramInfo::ExtractKeyFromPathname(infile, chanid, recstartts);
ProgramInfo *pginfo = NULL;
if (chanid && recstartts.isValid())
{
pginfo = new ProgramInfo(chanid, recstartts);
if (!pginfo->GetChanID())
{
VERBOSE(VB_IMPORTANT, QString(
"Cannot locate recording made on '%1' at '%2'")
.arg(chanid).arg(starttime));
delete pginfo;
return PREVIEWGEN_EXIT_NOT_OK;
}
pginfo->SetPathname(pginfo->GetPlaybackURL(false, true));
}
else if (!infile.isEmpty())
{
if (!QFileInfo(infile).isReadable())
{
VERBOSE(VB_IMPORTANT, QString(
"Cannot read this file '%1'").arg(infile));
return PREVIEWGEN_EXIT_NOT_OK;
}
pginfo = new ProgramInfo(
infile, ""/*plot*/, ""/*title*/, ""/*subtitle*/, ""/*director*/,
0/*season*/, 0/*episode*/, 120/*length_in_minutes*/,
1895/*year*/);
}
else
{
VERBOSE(VB_IMPORTANT, "Cannot locate recording to preview");
return PREVIEWGEN_EXIT_NOT_OK;
}
PreviewGenerator *previewgen = new PreviewGenerator(
pginfo, QString(), PreviewGenerator::kLocal);
if (previewFrameNumber >= 0)
previewgen->SetPreviewTimeAsFrameNumber(previewFrameNumber);
if (previewSeconds >= 0)
previewgen->SetPreviewTimeAsSeconds(previewSeconds);
previewgen->SetOutputSize(previewSize);
previewgen->SetOutputFilename(outfile);
bool ok = previewgen->RunReal();
previewgen->deleteLater();
delete pginfo;
return (ok) ? PREVIEWGEN_EXIT_OK : PREVIEWGEN_EXIT_NOT_OK;
}
QFileInfo Content::GetPreviewImage( int nRecordedId,
int nChanId,
const QDateTime &recstarttsRaw,
int nWidth,
int nHeight,
int nSecsIn,
const QString &sFormat )
{
if ((nRecordedId <= 0) &&
(nChanId <= 0 || !recstarttsRaw.isValid()))
throw QString("Recorded ID or Channel ID and StartTime appears invalid.");
if (!sFormat.isEmpty()
&& !QImageWriter::supportedImageFormats().contains(sFormat.toLower().toLocal8Bit()))
{
throw "GetPreviewImage: Specified 'Format' is not supported.";
}
// ----------------------------------------------------------------------
// Read Recording From Database
// ----------------------------------------------------------------------
// TODO Should use RecordingInfo
ProgramInfo pginfo;
if (nRecordedId > 0)
pginfo = ProgramInfo(nRecordedId);
else
pginfo = ProgramInfo(nChanId, recstarttsRaw.toUTC());
if (!pginfo.GetChanID())
{
LOG(VB_GENERAL, LOG_ERR,
QString("GetPreviewImage: No recording for '%1'")
.arg(nRecordedId));
return QFileInfo();
}
if (pginfo.GetHostname().toLower() != gCoreContext->GetHostName().toLower())
{
QString sMsg =
QString("GetPreviewImage: Wrong Host '%1' request from '%2'")
.arg( gCoreContext->GetHostName())
.arg( pginfo.GetHostname() );
LOG(VB_UPNP, LOG_ERR, sMsg);
throw HttpRedirectException( pginfo.GetHostname() );
}
QString sImageFormat = sFormat;
if (sImageFormat.isEmpty())
sImageFormat = "PNG";
QString sFileName = GetPlaybackURL(&pginfo);
// ----------------------------------------------------------------------
// check to see if default preview image is already created.
// ----------------------------------------------------------------------
QString sPreviewFileName;
if (nSecsIn <= 0)
{
nSecsIn = -1;
sPreviewFileName = QString("%1.png").arg(sFileName);
}
else
{
sPreviewFileName = QString("%1.%2.png").arg(sFileName).arg(nSecsIn);
}
if (!QFile::exists( sPreviewFileName ))
{
// ------------------------------------------------------------------
// Must generate Preview Image, Generate Image and save.
// ------------------------------------------------------------------
if (!pginfo.IsLocal() && sFileName.startsWith("/"))
pginfo.SetPathname(sFileName);
if (!pginfo.IsLocal())
return QFileInfo();
PreviewGenerator *previewgen = new PreviewGenerator( &pginfo,
QString(),
PreviewGenerator::kLocal);
previewgen->SetPreviewTimeAsSeconds( nSecsIn );
previewgen->SetOutputFilename ( sPreviewFileName );
bool ok = previewgen->Run();
previewgen->deleteLater();
if (!ok)
return QFileInfo();
}
bool bDefaultPixmap = (nWidth == 0) && (nHeight == 0);
QString sNewFileName;
if (bDefaultPixmap)
sNewFileName = sPreviewFileName;
else
{
sNewFileName = QString( "%1.%2.%3x%4.%5" )
.arg( sFileName )
.arg( nSecsIn )
.arg( nWidth == 0 ? -1 : nWidth )
.arg( nHeight == 0 ? -1 : nHeight )
.arg( sImageFormat.toLower() );
// ----------------------------------------------------------------------
// check to see if scaled preview image is already created and isn't
// out of date
// ----------------------------------------------------------------------
if (QFile::exists( sNewFileName ))
{
if (QFileInfo(sPreviewFileName).lastModified() <=
QFileInfo(sNewFileName).lastModified())
return QFileInfo( sNewFileName );
}
QImage image = QImage(sPreviewFileName);
if (image.isNull())
return QFileInfo();
// We can just re-scale the default (full-size version) to avoid
// a preview generator run
if ( nWidth <= 0 )
image = image.scaledToHeight(nHeight, Qt::SmoothTransformation);
else if ( nHeight <= 0 )
image = image.scaledToWidth(nWidth, Qt::SmoothTransformation);
else
image = image.scaled(nWidth, nHeight, Qt::IgnoreAspectRatio,
Qt::SmoothTransformation);
image.save(sNewFileName, sImageFormat.toUpper().toLocal8Bit());
// Let anybody update it
bool ret = makeFileAccessible(sNewFileName.toLocal8Bit().constData());
if (!ret)
{
LOG(VB_GENERAL, LOG_ERR, "Unable to change permissions on "
"preview image. Backends and frontends "
"running under different users will be "
"unable to access it");
}
}
if (QFile::exists( sNewFileName ))
return QFileInfo( sNewFileName );
PreviewGenerator *previewgen = new PreviewGenerator( &pginfo,
QString(),
PreviewGenerator::kLocal);
previewgen->SetPreviewTimeAsSeconds( nSecsIn );
previewgen->SetOutputFilename ( sNewFileName );
previewgen->SetOutputSize (QSize(nWidth,nHeight));
bool ok = previewgen->Run();
previewgen->deleteLater();
if (!ok)
return QFileInfo();
return QFileInfo( sNewFileName );
}