// Return the value, looking up any indirect ref.
void MHGenericOctetString::GetValue(MHOctetString &str, MHEngine *engine) const
{
if (m_fIsDirect) str.Copy(m_Direct);
else {
MHUnion result;
MHRoot *pBase = engine->FindObject(m_Indirect);
pBase->GetVariableValue(result, engine);
// From my reading of the MHEG documents implicit conversion is only
// performed when assigning variables. Nevertheless the Channel 4
// Teletext assumes that implicit conversion takes place here as well.
if (result.m_Type == MHUnion::U_Int) {
// Implicit conversion of int to string.
char buff[30]; // 30 chars is more than enough.
#ifdef WIN32
_snprintf(buff, sizeof(buff), "%0d", result.m_nIntVal);
#else
snprintf(buff, sizeof(buff), "%0d", result.m_nIntVal);
#endif
str.Copy(buff);
}
else {
result.CheckType(MHUnion::U_String);
str.Copy(result.m_StrVal);
}
}
}
// Construct a substring.
MHOctetString::MHOctetString(const MHOctetString &str, int nOffset, int nLen)
{
if (nLen < 0)
{
nLen = str.Size() - nOffset; // The rest of the string.
}
if (nLen < 0)
{
nLen = 0;
}
if (nLen > str.Size())
{
nLen = str.Size();
}
m_nLength = nLen;
if (nLen == 0)
{
m_pChars = 0;
}
else
{
m_pChars = (unsigned char *)malloc(nLen + 1);
if (! m_pChars)
{
throw "Out of memory";
}
memcpy(m_pChars, str.m_pChars + nOffset, nLen);
}
}
void MHEngine::GetDefaultFontAttrs(MHOctetString &str)
{
MHApplication *pApp = CurrentApp();
if (pApp && pApp->m_FontAttrs.Size() > 0)
{
str.Copy(pApp->m_FontAttrs);
}
else
{
str.Copy("plain.24.24.0"); // TODO: Check this.
}
}
// Create a canonical path name. The rules are given in the UK MHEG document.
QString MHEngine::GetPathName(const MHOctetString &str)
{
if (str.Size() == 0)
return QString();
QString csPath = QString::fromUtf8((const char *)str.Bytes(), str.Size());
switch (PathProtocol(csPath))
{
default:
case kProtoUnknown:
case kProtoHybrid:
case kProtoHTTP:
case kProtoCI:
return csPath;
case kProtoDSM:
break;
}
if (csPath.startsWith("DSM:"))
csPath = csPath.mid(4); // Remove DSM:
else if (csPath.startsWith("~"))
csPath = csPath.mid(1); // Remove ~
if (!csPath.startsWith("//"))
{
// Add the current application's path name
if (CurrentApp())
{
csPath = CurrentApp()->m_Path + csPath;
}
}
// Remove any occurrences of x/../
int nPos;
while ((nPos = csPath.indexOf("/../")) >= 0)
{
int nEnd = nPos + 4;
while (nPos >= 1 && csPath[nPos-1] != '/')
{
nPos--;
}
csPath = csPath.left(nPos) + csPath.mid(nEnd);
}
return csPath;
}
// Extract a string value.
static void GetString(MHParameter *parm, MHOctetString &str, MHEngine *engine)
{
MHUnion un;
un.GetValueFrom(*parm, engine);
un.CheckType(MHUnion::U_String);
str.Copy(un.m_StrVal);
}
// Parse a string argument. ASN1 strings can include nulls as valid characters.
void MHParseBinary::ParseString(int endStr, MHOctetString &str)
{
// TODO: Don't deal with indefinite length at the moment.
if (endStr == INDEFINITE_LENGTH)
{
MHERROR("Indefinite length strings are not implemented");
}
int nLength = endStr - m_p;
unsigned char *stringValue = (unsigned char *)malloc(nLength + 1);
if (stringValue == NULL)
{
MHERROR("Out of memory");
}
unsigned char *p = stringValue;
while (m_p < endStr)
{
*p++ = GetNextChar();
}
str.Copy(MHOctetString((const char *)stringValue, nLength));
free(stringValue);
}
// String
void MHParseNode::GetStringValue(MHOctetString &str)
{
if (m_nNodeType != PNString)
{
Failure("Expected string");
}
str.Copy(((MHPString *)this)->m_Value);
}
// Find out what we support.
bool MHEngine::GetEngineSupport(const MHOctetString &feature)
{
QString csFeat = QString::fromUtf8((const char *)feature.Bytes(), feature.Size());
QStringList strings = csFeat.split(QRegExp("[\\(\\,\\)]"));
MHLOG(MHLogNotifications, "NOTE GetEngineSupport " + csFeat);
if (strings[0] == "ApplicationStacking" || strings[0] == "ASt")
{
return true;
}
// We're required to support cloning for Text, Bitmap and Rectangle.
if (strings[0] == "Cloning" || strings[0] == "Clo")
{
return true;
}
if (strings[0] == "SceneCoordinateSystem" || strings[0] == "SCS")
{
if (strings.count() >= 3 && strings[1] == "720" && strings[2] == "576")
{
return true;
}
else
{
return false;
}
// I've also seen SceneCoordinateSystem(1,1)
}
if (strings[0] == "MultipleAudioStreams" || strings[0] == "MAS")
{
if (strings.count() >= 2 && (strings[1] == "0" || strings[1] == "1"))
{
return true;
}
else
{
return false;
}
}
if (strings[0] == "MultipleVideoStreams" || strings[0] == "MVS")
{
if (strings.count() >= 2 && (strings[1] == "0" || strings[1] == "1"))
{
return true;
}
else
{
return false;
}
}
// We're supposed to return true for all values of N
if (strings[0] == "OverlappingVisibles" || strings[0] == "OvV")
{
return true;
}
if (strings[0] == "SceneAspectRatio" || strings[0] == "SAR")
{
if (strings.count() < 3)
{
return false;
}
else if ((strings[1] == "4" && strings[2] == "3") || (strings[1] == "16" && strings[2] == "9"))
{
return true;
}
else
{
return false;
}
}
// We're supposed to support these at least. May also support(10,1440,1152)
if (strings[0] == "VideoScaling" || strings[0] == "VSc")
{
if (strings.count() < 4 || strings[1] != "10")
{
return false;
}
else if ((strings[2] == "720" && strings[3] == "576") || (strings[2] == "360" && strings[3] == "288"))
{
return true;
}
else
{
return false;
}
}
if (strings[0] == "BitmapScaling" || strings[0] == "BSc")
{
if (strings.count() < 4 || strings[1] != "2")
{
return false;
}
else if ((strings[2] == "720" && strings[3] == "576") || (strings[2] == "360" && strings[3] == "288"))
{
return true;
}
else
{
return false;
}
}
// I think we only support the video fully on screen
if (strings[0] == "VideoDecodeOffset" || strings[0] == "VDO")
{
if (strings.count() >= 3 && strings[1] == "10" && strings[1] == "0")
{
return true;
}
else
{
return false;
}
}
// We support bitmaps that are partially off screen (don't we?)
if (strings[0] == "BitmapDecodeOffset" || strings[0] == "BDO")
{
if (strings.count() >= 3 && strings[1] == "2" && (strings[2] == "0" || strings[2] == "1"))
{
return true;
}
else if (strings.count() >= 2 && (strings[1] == "4" || strings[1] == "6"))
{
return true;
}
else
{
return false;
}
}
if (strings[0] == "UKEngineProfile" || strings[0] == "UniversalEngineProfile" || strings[0] == "UEP")
{
if (strings.count() < 2)
{
return false;
}
if (strings[1] == MHEGEngineProviderIdString)
{
return true;
}
if (strings[1] == m_Context->GetReceiverId())
{
return true;
}
if (strings[1] == m_Context->GetDSMCCId())
{
return true;
}
// The UK profile 1.06 seems a bit confused on this point. It is not clear whether
// we are supposed to return true for UKEngineProfile(2) or not.
if (strings[1] == "2")
{
return true;
}
else
{
return false;
}
}
// InteractionChannelExtension.
if (strings[0] == "ICProfile" || strings[0] == "ICP") {
if (strings.count() != 2) return false;
if (strings[1] == "0")
return true; // // InteractionChannelExtension.
if (strings[1] == "1")
return false; // ICStreamingExtension.
return false;
}
// Otherwise return false.
return false;
}
// UK MHEG. Interpret the font attributes.
static void InterpretAttributes(const MHOctetString &attrs, int &style, int &size, int &lineSpace, int &letterSpace)
{
// Set the defaults.
style = 0;
size = 0x18;
lineSpace = 0x18;
letterSpace = 0;
if (attrs.Size() == 5) // Short form.
{
style = attrs.GetAt(0); // Only the bottom nibble is significant.
size = attrs.GetAt(1);
lineSpace = attrs.GetAt(2);
// Is this big-endian or little-endian? Assume big.
letterSpace = attrs.GetAt(3) * 256 + attrs.GetAt(4);
if (letterSpace > 32767)
{
letterSpace -= 65536; // Signed.
}
}
else // Textual form.
{
const unsigned char *str = attrs.Bytes();
char *p = (char *)str;
char *q = strchr(p, '.'); // Find the terminating dot
if (q != NULL) // plain, italic etc.
{
if (q - p == 6 && strncmp(p, "italic", 6) == 0)
{
style = 1;
}
else if (q - p == 4 && strncmp(p, "bold", 4) == 0)
{
style = 2;
}
else if (q - p == 11 && strncmp(p, "bold-italic", 11) == 0)
{
style = 3;
}
// else it's plain.
p = q + 1;
q = strchr(p, '.'); // Find the next dot.
}
if (q != NULL) // Size
{
size = atoi(p);
if (size == 0)
{
size = 0x18;
}
p = q + 1;
q = strchr(p, '.'); // Find the next dot.
}
if (q != NULL) // lineSpacing
{
lineSpace = atoi(p);
if (lineSpace == 0)
{
lineSpace = 0x18;
}
p = q + 1;
q = strchr(p, '.'); // Find the next dot.
}
if (q != NULL) // letter spacing. May be zero or negative
{
letterSpace = atoi(p);
}
}
}
void MHResidentProgram::CallProgram(bool fIsFork, const MHObjectRef &success, const MHSequence<MHParameter *> &args, MHEngine *engine)
{
if (! m_fAvailable)
{
Preparation(engine);
}
// if (m_fRunning) return; // Strictly speaking there should be only one instance of a program running at a time.
Activation(engine);
MHLOG(MHLogDetail, QString("Calling program %1").arg(m_Name.Printable()));
try
{
// Run the code.
if (m_Name.Equal("GCD")) // GetCurrentDate - returns local time.
{
if (args.Size() == 2)
{
time_t epochSeconds = 0;
short int timeZone = 0;
#if HAVE_GETTIMEOFDAY
struct timeval time;
struct timezone zone;
if (gettimeofday(&time, &zone) == -1)
{
MHLOG(MHLogDetail, QString("gettimeofday() failed"));
}
epochSeconds = time.tv_sec;
timeZone = zone.tz_minuteswest;
#elif HAVE_FTIME
struct timeb timebuffer;
if (ftime(&timebuffer) == -1)
{
MHLOG(MHLogDetail, QString("ftime() failed"));
}
epochSeconds = timebuffer.time;
timeZone = timebuffer.timezone;
#else
#error Configuration error? No ftime() or gettimeofday()?
#endif
// Adjust the time to local. TODO: Check this.
epochSeconds -= timeZone * 60;
// Time as seconds since midnight.
int nTimeAsSecs = epochSeconds % (24 * 60 * 60);
// Modified Julian date as number of days since 17th November 1858.
// 1st Jan 1970 was date 40587.
int nModJulianDate = 40587 + epochSeconds / (24 * 60 * 60);
engine->FindObject(*(args.GetAt(0)->GetReference()))->SetVariableValue(nModJulianDate);
engine->FindObject(*(args.GetAt(1)->GetReference()))->SetVariableValue(nTimeAsSecs);
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("FDa")) // FormatDate
{
if (args.Size() == 4)
{
// This is a bit like strftime but not quite.
MHOctetString format;
GetString(args.GetAt(0), format, engine);
int date = GetInt(args.GetAt(1), engine); // As produced in GCD
int time = GetInt(args.GetAt(2), engine);
// Convert to a Unix date (secs since 1st Jan 1970) but adjusted for time zone.
time_t timet = (date - 40587) * (24 * 60 * 60) + time;
struct tm *timeStr = gmtime(&timet);
MHOctetString result;
for (int i = 0; i < format.Size(); i++)
{
unsigned char ch = format.GetAt(i);
char buffer[5]; // Largest text is 4 chars for a year + null terminator
if (ch == '%')
{
i++;
if (i == format.Size())
{
break;
}
ch = format.GetAt(i);
buffer[0] = 0;
switch (ch)
{
case 'Y':
sprintf(buffer, "%04d", timeStr->tm_year + 1900);
break;
case 'y':
sprintf(buffer, "%02d", timeStr->tm_year % 100);
break;
case 'X':
sprintf(buffer, "%02d", timeStr->tm_mon + 1);
break;
case 'x':
sprintf(buffer, "%1d", timeStr->tm_mon + 1);
break;
case 'D':
sprintf(buffer, "%02d", timeStr->tm_mday);
break;
case 'd':
sprintf(buffer, "%1d", timeStr->tm_mday);
break;
case 'H':
sprintf(buffer, "%02d", timeStr->tm_hour);
break;
case 'h':
sprintf(buffer, "%1d", timeStr->tm_hour);
break;
case 'I':
if (timeStr->tm_hour == 12 || timeStr->tm_hour == 0)
{
strcpy(buffer, "12");
}
else
{
sprintf(buffer, "%02d", timeStr->tm_hour % 12);
}
break;
case 'i':
if (timeStr->tm_hour == 12 || timeStr->tm_hour == 0)
{
strcpy(buffer, "12");
}
else
{
sprintf(buffer, "%1d", timeStr->tm_hour % 12);
}
break;
case 'M':
sprintf(buffer, "%02d", timeStr->tm_min);
break;
case 'm':
sprintf(buffer, "%1d", timeStr->tm_min);
break;
case 'S':
sprintf(buffer, "%02d", timeStr->tm_sec);
break;
case 's':
sprintf(buffer, "%1d", timeStr->tm_sec);
break;
// TODO: These really should be localised.
case 'A':
if (timeStr->tm_hour < 12)
{
strcpy(buffer, "AM");
}
else
{
strcpy(buffer, "PM");
}
break;
case 'a':
if (timeStr->tm_hour < 12)
{
strcpy(buffer, "am");
}
else
{
strcpy(buffer, "pm");
}
break;
default:
buffer[0] = ch;
buffer[1] = 0;
}
result.Append(buffer);
}
else
{
result.Append(MHOctetString(&ch, 1));
}
}
MHParameter *pResString = args.GetAt(3);
engine->FindObject(*(pResString->GetReference()))->SetVariableValue(result);
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("GDW")) // GetDayOfWeek - returns the day of week that the date occurred on.
{
if (args.Size() == 2)
{
int date = GetInt(args.GetAt(0), engine); // Date as produced in GCD
// Convert to a Unix date (secs since 1st Jan 1970) but adjusted for time zone.
time_t timet = (date - 40587) * (24 * 60 * 60);
struct tm *timeStr = gmtime(&timet);
// 0 => Sunday, 1 => Monday etc.
engine->FindObject(*(args.GetAt(1)->GetReference()))->SetVariableValue(timeStr->tm_wday);
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("Rnd")) // Random
{
if (args.Size() == 2)
{
int nLimit = GetInt(args.GetAt(0), engine);
MHParameter *pResInt = args.GetAt(1);
int r = random() % (nLimit + 1);
engine->FindObject(
*(pResInt->GetReference()))->SetVariableValue(r);
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("CTC")) // CastToContentRef
{
// Converts a string to a ContentRef.
if (args.Size() == 2)
{
MHOctetString string;
GetString(args.GetAt(0), string, engine);
MHContentRef result;
result.m_ContentRef.Copy(string);
engine->FindObject(*(args.GetAt(1)->GetReference()))->SetVariableValue(result);
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("CTO")) // CastToObjectRef
{
// Converts a string and an integer to an ObjectRef.
if (args.Size() == 3)
{
MHObjectRef result;
GetString(args.GetAt(0), result.m_GroupId, engine);
result.m_nObjectNo = GetInt(args.GetAt(1), engine);
engine->FindObject(*(args.GetAt(2)->GetReference()))->SetVariableValue(result);
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("GSL")) // GetStringLength
{
if (args.Size() == 2)
{
// Find a substring within a string and return an index to the position.
MHOctetString string;
GetString(args.GetAt(0), string, engine);
MHParameter *pResInt = args.GetAt(1);
SetSuccessFlag(success, true, engine);
engine->FindObject(*(pResInt->GetReference()))->SetVariableValue(string.Size());
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("GSS")) // GetSubString
{
if (args.Size() == 4) // Extract a sub-string from a string.
{
MHOctetString string;
GetString(args.GetAt(0), string, engine);
int nBeginExtract = GetInt(args.GetAt(1), engine);
int nEndExtract = GetInt(args.GetAt(2), engine);
if (nBeginExtract < 1)
{
nBeginExtract = 1;
}
if (nBeginExtract > string.Size())
{
nBeginExtract = string.Size();
}
if (nEndExtract < 1)
{
nEndExtract = 1;
}
if (nEndExtract > string.Size())
{
nEndExtract = string.Size();
}
MHParameter *pResString = args.GetAt(3);
// Returns beginExtract to endExtract inclusive.
engine->FindObject(*(pResString->GetReference()))->SetVariableValue(
MHOctetString(string, nBeginExtract - 1, nEndExtract - nBeginExtract + 1));
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("SSS")) // SearchSubString
{
if (args.Size() == 4)
{
// Find a substring within a string and return an index to the position.
MHOctetString string, searchString;
GetString(args.GetAt(0), string, engine);
int nStart = GetInt(args.GetAt(1), engine);
if (nStart < 1)
{
nStart = 1;
}
GetString(args.GetAt(2), searchString, engine);
// Strings are indexed from one.
int nPos;
for (nPos = nStart - 1; nPos <= string.Size() - searchString.Size(); nPos++)
{
int i;
for (i = 0; i < searchString.Size(); i++)
{
if (searchString.GetAt(i) != string.GetAt(i + nPos))
{
break;
}
}
if (i == searchString.Size())
{
break; // Found a match.
}
}
// Set the result.
MHParameter *pResInt = args.GetAt(3);
SetSuccessFlag(success, true, engine); // Set this first.
if (nPos <= string.Size() - searchString.Size()) // Found
{
// Set the index to the position of the string, counting from 1.
engine->FindObject(*(pResInt->GetReference()))->SetVariableValue(nPos + 1);
}
else // Not found. Set the result index to -1
{
engine->FindObject(*(pResInt->GetReference()))->SetVariableValue(-1);
}
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("SES")) // SearchAndExtractSubString
{
if (args.Size() == 5)
{
// Find a substring within a string and return an index to the position
// and the prefix to the substring.
MHOctetString string, searchString;
GetString(args.GetAt(0), string, engine);
int nStart = GetInt(args.GetAt(1), engine);
if (nStart < 1)
{
nStart = 1;
}
GetString(args.GetAt(2), searchString, engine);
// Strings are indexed from one.
int nPos;
for (nPos = nStart - 1; nPos <= string.Size() - searchString.Size(); nPos++)
{
int i;
for (i = 0; i < searchString.Size(); i++)
{
if (searchString.GetAt(i) != string.GetAt(i + nPos))
{
break; // Doesn't match
}
}
if (i == searchString.Size())
{
break; // Found a match.
}
}
// Set the results.
MHParameter *pResString = args.GetAt(3);
MHParameter *pResInt = args.GetAt(4);
SetSuccessFlag(success, true, engine); // Set this first.
if (nPos <= string.Size() - searchString.Size()) // Found
{
// Set the index to the position AFTER the string, counting from 1.
engine->FindObject(*(pResInt->GetReference()))->SetVariableValue(nPos + 1 + searchString.Size());
// Return the sequence from nStart-1 of length nPos-nStart+1
MHOctetString resultString(string, nStart - 1, nPos - nStart + 1);
engine->FindObject(*(pResString->GetReference()))->SetVariableValue(resultString);
}
else // Not found. Set the result string to empty and the result index to -1
{
engine->FindObject(*(pResInt->GetReference()))->SetVariableValue(-1);
engine->FindObject(*(pResString->GetReference()))->SetVariableValue(MHOctetString(""));
}
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("GSI")) // SI_GetServiceIndex
{
// Returns an index indicating the service
if (args.Size() == 2)
{
MHOctetString string;
GetString(args.GetAt(0), string, engine);
MHParameter *pResInt = args.GetAt(1);
// The format of the service is dvb://netID.[transPortID].serviceID
// where the IDs are in hex.
// or rec://svc/lcn/N where N is the "logical channel number" i.e. the Freeview channel.
QString str = QString::fromUtf8((const char *)string.Bytes(), string.Size());
int nResult = engine->GetContext()->GetChannelIndex(str);
engine->FindObject(*(pResInt->GetReference()))->SetVariableValue(nResult);
SetSuccessFlag(success, nResult >= 0, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("TIn")) // SI_TuneIndex - Fork not allowed
{
// Tunes to an index returned by GSI
if (args.Size() == 1)
{
int nChannel = GetInt(args.GetAt(0), engine);
bool res = nChannel >= 0 ? engine->GetContext()->TuneTo(
nChannel, engine->GetTuneInfo()) : false;
SetSuccessFlag(success, res, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("TII")) // SI_TuneIndexInfo
{
// Indicates whether to perform a subsequent TIn quietly or normally.
if (args.Size() == 1)
{
int tuneinfo = GetInt(args.GetAt(0), engine);
engine->SetTuneInfo(tuneinfo);
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("BSI")) // SI_GetBasicSI
{
// Returns basic SI information about the service indicated by an index
// returned by GSI.
// Returns networkID, origNetworkID, transportStreamID, serviceID
if (args.Size() == 5)
{
int channelId = GetInt(args.GetAt(0), engine);
int netId, origNetId, transportId, serviceId;
// Look the information up in the database.
bool res = engine->GetContext()->GetServiceInfo(channelId, netId, origNetId,
transportId, serviceId);
if (res)
{
engine->FindObject(*(args.GetAt(1)->GetReference()))->SetVariableValue(netId);
engine->FindObject(*(args.GetAt(2)->GetReference()))->SetVariableValue(origNetId);
engine->FindObject(*(args.GetAt(3)->GetReference()))->SetVariableValue(transportId);
engine->FindObject(*(args.GetAt(4)->GetReference()))->SetVariableValue(serviceId);
}
SetSuccessFlag(success, res, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("GBI")) // GetBootInfo
{
// Gets the NB_info field.
MHERROR("GetBootInfo ResidentProgram is not implemented");
}
else if (m_Name.Equal("CCR")) // CheckContentRef
{
// Sees if an item with a particular content reference is available
// in the carousel. This looks like it should block until the file
// is available. The profile recommends that this should be forked
// rather than called.
if (args.Size() == 3)
{
MHUnion un;
un.GetValueFrom(*(args.GetAt(0)), engine);
un.CheckType(MHUnion::U_ContentRef);
MHContentRef fileName;
fileName.Copy(un.m_ContentRefVal);
QString csPath = engine->GetPathName(fileName.m_ContentRef);
bool result = false;
QByteArray text;
// Try to load the object.
if (! csPath.isEmpty())
{
result = engine->GetContext()->GetCarouselData(csPath, text);
}
// Set the result variable.
MHParameter *pResFlag = args.GetAt(1);
engine->FindObject(*(pResFlag->GetReference()))->SetVariableValue(result);
MHParameter *pResCR = args.GetAt(2);
// Copy the file name to the resulting content ref.
engine->FindObject(*(pResCR->GetReference()))->SetVariableValue(fileName);
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("CGR")) // CheckGroupIDRef
{
// Sees if an application or scene with a particular group id
// is available in the carousel.
MHERROR("CheckGroupIDRef ResidentProgram is not implemented");
}
else if (m_Name.Equal("VTG")) // VideoToGraphics
{
// Video to graphics transformation.
MHERROR("VideoToGraphics ResidentProgram is not implemented");
}
else if (m_Name.Equal("SWA")) // SetWidescreenAlignment
{
// Sets either LetterBox or Centre-cut-out mode.
// Seems to be concerned with aligning a 4:3 scene with an underlying 16:9 video
MHERROR("SetWidescreenAlignment ResidentProgram is not implemented");
}
else if (m_Name.Equal("GDA")) // GetDisplayAspectRatio
{
// Returns the aspcet ratio. 4:3 => 1, 16:9 => 2
MHERROR("GetDisplayAspectRatio ResidentProgram is not implemented");
}
else if (m_Name.Equal("CIS")) // CI_SendMessage
{
// Sends a message to a DVB CI application
MHERROR("CI_SendMessage ResidentProgram is not implemented");
}
else if (m_Name.Equal("SSM")) // SetSubtitleMode
{
// Enable or disable subtitles in addition to MHEG.
if (args.Size() == 1) {
bool status = GetBool(args.GetAt(0), engine);
MHLOG(MHLogNotifications, QString("NOTE SetSubtitleMode %1")
.arg(status ? "enabled" : "disabled"));
// TODO Notify player
SetSuccessFlag(success, true, engine);
}
else SetSuccessFlag(success, false, engine);
}
else if (m_Name.Equal("WAI")) // WhoAmI
{
// Return a concatenation of the strings we respond to in
// GetEngineSupport(UKEngineProfile(X))
if (args.Size() == 1)
{
MHOctetString result;
result.Copy(engine->MHEGEngineProviderIdString);
result.Append(" ");
result.Append(engine->GetContext()->GetReceiverId());
result.Append(" ");
result.Append(engine->GetContext()->GetDSMCCId());
engine->FindObject(*(args.GetAt(0)->GetReference()))->SetVariableValue(result);
SetSuccessFlag(success, true, engine);
}
else
{
SetSuccessFlag(success, false, engine);
}
}
else if (m_Name.Equal("DBG")) // Debug - optional
{
QString message = "DEBUG: ";
for (int i = 0; i < args.Size(); i++)
{
MHUnion un;
un.GetValueFrom(*(args.GetAt(i)), engine);
switch (un.m_Type)
{
case MHUnion::U_Int:
message.append(QString("%1").arg(un.m_nIntVal));
break;
case MHParameter::P_Bool:
message.append(un.m_fBoolVal ? "True" : "False");
break;
case MHParameter::P_String:
message.append(QString::fromUtf8((const char *)un.m_StrVal.Bytes(), un.m_StrVal.Size()));
break;
case MHParameter::P_ObjRef:
message.append(un.m_ObjRefVal.Printable());
break;
case MHParameter::P_ContentRef:
message.append(un.m_ContentRefVal.Printable());
break;
case MHParameter::P_Null:
break;
}
}
MHLOG(MHLogNotifications, message);
}
else if (m_Name.Equal("SBI")) // SetBroadcastInterrupt
{
// Required for NativeApplicationExtension
// En/dis/able program interruptions e.g. green button
if (args.Size() == 1) {
bool status = GetBool(args.GetAt(0), engine);
MHLOG(MHLogNotifications, QString("NOTE SetBroadcastInterrupt %1")
.arg(status ? "enabled" : "disabled"));
// Nothing todo at present
SetSuccessFlag(success, true, engine);
}
else SetSuccessFlag(success, false, engine);
}
// InteractionChannelExtension
else if (m_Name.Equal("GIS")) { // GetICStatus
if (args.Size() == 1)
{
int ICstatus = engine->GetContext()->GetICStatus();
MHLOG(MHLogNotifications, "NOTE InteractionChannel " + QString(
ICstatus == 0 ? "active" : ICstatus == 1 ? "inactive" :
ICstatus == 2 ? "disabled" : "undefined"));
engine->FindObject(*(args.GetAt(0)->GetReference()))->SetVariableValue(ICstatus);
SetSuccessFlag(success, true, engine);
}
else SetSuccessFlag(success, false, engine);
}
else if (m_Name.Equal("RDa")) { // ReturnData
if (args.Size() >= 3)
{
MHOctetString string;
GetString(args.GetAt(0), string, engine);
QString url = QString::fromUtf8((const char *)string.Bytes(), string.Size());
// Variable name/value pairs
QStringList params;
int i = 1;
for (; i + 2 < args.Size(); i += 2)
{
GetString(args.GetAt(i), string, engine);
QString name = QString::fromUtf8((const char *)string.Bytes(), string.Size());
QString val;
MHUnion un;
un.GetValueFrom(*(args.GetAt(i+1)), engine);
switch (un.m_Type) {
case MHUnion::U_Int:
val = QString::number(un.m_nIntVal);
break;
case MHParameter::P_Bool:
val = un.m_fBoolVal ? "true" : "false";
break;
case MHParameter::P_String:
val = QString::fromUtf8((const char*)un.m_StrVal.Bytes(), un.m_StrVal.Size());
break;
case MHParameter::P_ObjRef:
val = un.m_ObjRefVal.Printable();
break;
case MHParameter::P_ContentRef:
val = un.m_ContentRefVal.Printable();
break;
case MHParameter::P_Null:
val = "<NULL>";
break;
default:
val = QString("<type %1>").arg(un.m_Type);
break;
}
params += name + "=" + val;
}
// TODO
MHLOG(MHLogNotifications, "NOTE ReturnData '" + url + "' { " + params.join(" ") + " }");
// HTTP response code, 0= none
engine->FindObject(*(args.GetAt(i)->GetReference()))->SetVariableValue(0);
// HTTP response data
string = "";
engine->FindObject(*(args.GetAt(i+1)->GetReference()))->SetVariableValue(string);
SetSuccessFlag(success, false, engine);
}
else SetSuccessFlag(success, false, engine);
}
else if (m_Name.Equal("SHF")) { // SetHybridFileSystem
if (args.Size() == 2)
{
MHOctetString string;
GetString(args.GetAt(0), string, engine);
QString str = QString::fromUtf8((const char *)string.Bytes(), string.Size());
GetString(args.GetAt(1), string, engine);
QString str2 = QString::fromUtf8((const char *)string.Bytes(), string.Size());
// TODO
MHLOG(MHLogNotifications, QString("NOTE SetHybridFileSystem %1=%2")
.arg(str).arg(str2));
SetSuccessFlag(success, false, engine);
}
else SetSuccessFlag(success, false, engine);
}
else
{
MHERROR(QString("Unknown ResidentProgram %1").arg(m_Name.Printable()));
}
}
catch (char const *)
{
// If something went wrong set the succeeded flag to false
SetSuccessFlag(success, false, engine);
// And continue on. In particular we need to deactivate.
}
Deactivation(engine);
// At the moment we always treat Fork as Call. If we do get a Fork we should signal that we're done.
if (fIsFork)
{
engine->EventTriggered(this, EventAsyncStopped);
}
}
MHParseNode *MHParseText::DoParse()
{
MHParseNode *pRes = NULL;
try {
switch (m_nType) {
case PTStartSection: // Open curly bracket
{
NextSym();
// Should be followed by a tag.
if (m_nType != PTTag) Error("Expected ':' after '{'");
MHPTagged *pTag = new MHPTagged(m_nTag);
pRes = pTag;
NextSym();
while (m_nType != PTEndSection) {
pTag->AddArg(DoParse());
}
NextSym(); // Remove the close curly bracket.
break;
}
case PTTag: // Tag on its own.
{
int nTag = m_nTag;
MHPTagged *pTag = new MHPTagged(nTag);
pRes = pTag;
NextSym();
switch (nTag) {
case C_ITEMS:
case C_LINK_EFFECT:
case C_ACTIVATE:
case C_ADD:
case C_ADD_ITEM:
case C_APPEND:
case C_BRING_TO_FRONT:
case C_CALL:
case C_CALL_ACTION_SLOT:
case C_CLEAR:
case C_CLONE:
case C_CLOSE_CONNECTION:
case C_DEACTIVATE:
case C_DEL_ITEM:
case C_DESELECT:
case C_DESELECT_ITEM:
case C_DIVIDE:
case C_DRAW_ARC:
case C_DRAW_LINE:
case C_DRAW_OVAL:
case C_DRAW_POLYGON:
case C_DRAW_POLYLINE:
case C_DRAW_RECTANGLE:
case C_DRAW_SECTOR:
case C_FORK:
case C_GET_AVAILABILITY_STATUS:
case C_GET_BOX_SIZE:
case C_GET_CELL_ITEM:
case C_GET_CURSOR_POSITION:
case C_GET_ENGINE_SUPPORT:
case C_GET_ENTRY_POINT:
case C_GET_FILL_COLOUR:
case C_GET_FIRST_ITEM:
case C_GET_HIGHLIGHT_STATUS:
case C_GET_INTERACTION_STATUS:
case C_GET_ITEM_STATUS:
case C_GET_LABEL:
case C_GET_LAST_ANCHOR_FIRED:
case C_GET_LINE_COLOUR:
case C_GET_LINE_STYLE:
case C_GET_LINE_WIDTH:
case C_GET_LIST_ITEM:
case C_GET_LIST_SIZE:
case C_GET_OVERWRITE_MODE:
case C_GET_PORTION:
case C_GET_POSITION:
case C_GET_RUNNING_STATUS:
case C_GET_SELECTION_STATUS:
case C_GET_SLIDER_VALUE:
case C_GET_TEXT_CONTENT:
case C_GET_TEXT_DATA:
case C_GET_TOKEN_POSITION:
case C_GET_VOLUME:
case C_LAUNCH:
case C_LOCK_SCREEN:
case C_MODULO:
case C_MOVE:
case C_MOVE_TO:
case C_MULTIPLY:
case C_OPEN_CONNECTION:
case C_PRELOAD:
case C_PUT_BEFORE:
case C_PUT_BEHIND:
case C_QUIT:
case C_READ_PERSISTENT:
case C_RUN:
case C_SCALE_BITMAP:
case C_SCALE_VIDEO:
case C_SCROLL_ITEMS:
case C_SELECT:
case C_SELECT_ITEM:
case C_SEND_EVENT:
case C_SEND_TO_BACK:
case C_SET_BOX_SIZE:
case C_SET_CACHE_PRIORITY:
case C_SET_COUNTER_END_POSITION:
case C_SET_COUNTER_POSITION:
case C_SET_COUNTER_TRIGGER:
case C_SET_CURSOR_POSITION:
case C_SET_CURSOR_SHAPE:
case C_SET_DATA:
case C_SET_ENTRY_POINT:
case C_SET_FILL_COLOUR:
case C_SET_FIRST_ITEM:
case C_SET_FONT_REF:
case C_SET_HIGHLIGHT_STATUS:
case C_SET_INTERACTION_STATUS:
case C_SET_LABEL:
case C_SET_LINE_COLOUR:
case C_SET_LINE_STYLE:
case C_SET_LINE_WIDTH:
case C_SET_OVERWRITE_MODE:
case C_SET_PALETTE_REF:
case C_SET_PORTION:
case C_SET_POSITION:
case C_SET_SLIDER_VALUE:
case C_SET_SPEED:
case C_SET_TIMER:
case C_SET_TRANSPARENCY:
case C_SET_VARIABLE:
case C_SET_VOLUME:
case C_SPAWN:
case C_STEP:
case C_STOP:
case C_STORE_PERSISTENT:
case C_SUBTRACT:
case C_TEST_VARIABLE:
case C_TOGGLE:
case C_TOGGLE_ITEM:
case C_TRANSITION_TO:
case C_UNLOAD:
case C_UNLOCK_SCREEN:
case C_CONTENT_REFERENCE:
case C_TOKEN_GROUP_ITEMS:
case C_POSITIONS:
case C_MULTIPLEX:
{ // These are parenthesised in the text form. We have to remove the
// parentheses otherwise we will return a sequence which will not be
// be compatible with the binary form.
if (m_nType != PTStartSeq) Error("Expected '('");
NextSym();
while (m_nType != PTEndSeq) pTag->AddArg(DoParse());
NextSym(); // Remove the close parenthesis.
break;
}
case C_ORIGINAL_CONTENT:
case C_NEW_GENERIC_BOOLEAN:
case C_NEW_GENERIC_INTEGER:
case C_NEW_GENERIC_OCTETSTRING:
case C_NEW_GENERIC_OBJECT_REF:
case C_NEW_GENERIC_CONTENT_REF:
case C_ORIGINAL_VALUE:
// These always have an argument which may be a tagged item.
{
// Is it always the case that there is at least one argument so if we haven't
// had any arguments yet we should always process a tag as an argument?
pTag->AddArg(DoParse());
break;
}
default:
// This can be followed by an int, etc but a new tag is dealt with by the caller.
while (m_nType == PTBool ||m_nType == PTInt || m_nType == PTString || m_nType == PTEnum || m_nType == PTStartSeq) {
pTag->AddArg(DoParse());
}
}
break;
}
case PTInt:
{
pRes = new MHPInt(m_nInt);
NextSym();
break;
}
case PTBool:
{
pRes = new MHPBool(m_fBool);
NextSym();
break;
}
case PTString:
{
MHOctetString str;
str.Copy(MHOctetString((const char *)m_String, m_nStringLength));
pRes = new MHPString(str);
NextSym();
break;
}
case PTEnum:
{
pRes = new MHPEnum(m_nInt);
NextSym();
break;
}
case PTNull:
{
pRes = new MHPNull;
NextSym();
break;
}
case PTStartSeq: // Open parenthesis.
{
MHParseSequence *pSeq = new MHParseSequence;
pRes = pSeq;
NextSym();
while (m_nType != PTEndSeq) pSeq->Append(DoParse());
NextSym(); // Remove the close parenthesis.
break;
}
default:
Error("Unexpected symbol");
}
return pRes;
}
catch (...) {
delete(pRes);
throw;
}
}