bool PreviewGenerator::LocalPreviewRun(void)
{
programInfo.MarkAsInUse(true, kInUseID);
float aspect = 0;
int len, width, height, sz;
long long captime = captureTime;
if (captime < 0)
{
timeInSeconds = true;
captime = (gContext->GetNumSetting("PreviewPixmapOffset", 64) +
gContext->GetNumSetting("RecordPreRoll", 0));
}
len = width = height = sz = 0;
unsigned char *data = (unsigned char*)
GetScreenGrab(&programInfo, pathname,
captime, timeInSeconds,
sz, width, height, aspect);
QString outname = CreateAccessibleFilename(pathname, outFileName);
int dw = (outSize.width() < 0) ? width : outSize.width();
int dh = (outSize.height() < 0) ? height : outSize.height();
bool ok = SavePreview(outname, data, width, height, aspect, dw, dh);
if (data)
delete[] data;
programInfo.MarkAsInUse(false);
return ok;
}
bool PreviewGenerator::RemotePreviewRun(void)
{
QStringList strlist = "QUERY_GENPIXMAP";
programInfo.ToStringList(strlist);
strlist.push_back(timeInSeconds ? "s" : "f");
encodeLongLong(strlist, captureTime);
if (outFileName.isEmpty())
{
strlist.push_back("<EMPTY>");
}
else
{
QFileInfo fi(outFileName);
strlist.push_back(fi.fileName());
}
strlist.push_back(QString::number(outSize.width()));
strlist.push_back(QString::number(outSize.height()));
bool ok = false;
if (createSockets)
{
if (!RemotePreviewSetup())
{
VERBOSE(VB_IMPORTANT, LOC_ERR + "Failed to open sockets.");
return false;
}
if (serverSock)
{
serverSock->writeStringList(strlist);
ok = serverSock->readStringList(strlist, false);
}
RemotePreviewTeardown();
}
else
{
ok = gContext->SendReceiveStringList(strlist);
}
if (!ok || strlist.empty() || (strlist[0] != "OK"))
{
if (!ok)
{
VERBOSE(VB_IMPORTANT, LOC_ERR +
"Remote Preview failed due to communications error.");
}
else if (strlist.size() > 1)
{
VERBOSE(VB_IMPORTANT, LOC_ERR +
"Remote Preview failed, reason given: " <<strlist[1]);
}
else
{
VERBOSE(VB_IMPORTANT, LOC_ERR +
"Remote Preview failed due to an uknown error.");
}
return false;
}
if (outFileName.isEmpty())
return true;
// find file, copy/move to output file name & location...
QString url = QString::null;
QString fn = QFileInfo(outFileName).fileName();
QByteArray data;
ok = false;
QStringList fileNames;
fileNames.push_back(CreateAccessibleFilename(programInfo.pathname, fn));
fileNames.push_back(CreateAccessibleFilename(programInfo.pathname, ""));
QStringList::const_iterator it = fileNames.begin();
for ( ; it != fileNames.end() && (!ok || data.isEmpty()); ++it)
{
data.resize(0);
url = *it;
RemoteFile *rf = new RemoteFile(url, false, 0);
ok = rf->SaveAs(data);
delete rf;
}
if (ok && data.size())
{
QFile file(outFileName);
ok = file.open(IO_Raw|IO_WriteOnly);
if (!ok)
{
VERBOSE(VB_IMPORTANT, QString("Failed to open: '%1'")
.arg(outFileName));
}
off_t offset = 0;
size_t remaining = (ok) ? data.size() : 0;
uint failure_cnt = 0;
while ((remaining > 0) && (failure_cnt < 5))
{
ssize_t written = file.writeBlock(data.data() + offset, remaining);
if (written < 0)
{
failure_cnt++;
usleep(50000);
continue;
}
failure_cnt = 0;
offset += written;
remaining -= written;
}
if (ok && !remaining)
{
VERBOSE(VB_PLAYBACK, QString("Saved: '%1'")
.arg(outFileName));
}
}
return ok && data.size();
}
bool PreviewGenerator::LocalPreviewRun(void)
{
programInfo.MarkAsInUse(true, kPreviewGeneratorInUseID);
float aspect = 0;
int width, height, sz;
long long captime = captureTime;
QDateTime dt = QDateTime::currentDateTime();
if (captime > 0)
LOG(VB_GENERAL, LOG_INFO, "Preview from time spec");
if (captime < 0)
{
captime = programInfo.QueryBookmark();
if (captime > 0)
{
timeInSeconds = false;
LOG(VB_GENERAL, LOG_INFO,
QString("Preview from bookmark (frame %1)").arg(captime));
}
else
captime = -1;
}
if (captime < 0)
{
timeInSeconds = true;
int startEarly = 0;
int programDuration = 0;
int preroll = gCoreContext->GetNumSetting("RecordPreRoll", 0);
if (programInfo.GetScheduledStartTime().isValid() &&
programInfo.GetScheduledEndTime().isValid() &&
(programInfo.GetScheduledStartTime() !=
programInfo.GetScheduledEndTime()))
{
programDuration = programInfo.GetScheduledStartTime()
.secsTo(programInfo.GetScheduledEndTime());
}
if (programInfo.GetRecordingStartTime().isValid() &&
programInfo.GetScheduledStartTime().isValid() &&
(programInfo.GetRecordingStartTime() !=
programInfo.GetScheduledStartTime()))
{
startEarly = programInfo.GetRecordingStartTime()
.secsTo(programInfo.GetScheduledStartTime());
}
if (programDuration > 0)
{
captime = startEarly + (programDuration / 3);
}
if (captime < 0)
captime = 600;
captime += preroll;
LOG(VB_GENERAL, LOG_INFO,
QString("Preview at calculated offset (%1 seconds)").arg(captime));
}
width = height = sz = 0;
unsigned char *data = (unsigned char*)
GetScreenGrab(programInfo, pathname,
captime, timeInSeconds,
sz, width, height, aspect);
QString outname = CreateAccessibleFilename(pathname, outFileName);
int dw = (outSize.width() < 0) ? width : outSize.width();
int dh = (outSize.height() < 0) ? height : outSize.height();
bool ok = SavePreview(outname, data, width, height, aspect, dw, dh);
if (ok)
{
// Backdate file to start of preview time in case a bookmark was made
// while we were generating the preview.
struct utimbuf times;
times.actime = times.modtime = dt.toTime_t();
utime(outname.toLocal8Bit().constData(), ×);
}
delete[] data;
programInfo.MarkAsInUse(false, kPreviewGeneratorInUseID);
return ok;
}