import "IToiDvbCScanner.idl";
Public Member Functions | |
void | AddFrequencyScanParameters (in TToiDvbCFrontendParameters frontendParameters, in long startFrequency, in long endFrequency, in long step) raises (TToiInvalidPreconditionException, TToiInvalidArgumentException) |
void | AddNitScanParametersByNetworkId (in TToiDvbCFrontendParameters frontendParameters, in long frequency, in long networkId) raises (TToiInvalidPreconditionException, TToiInvalidArgumentException) |
void | Clear () raises (TToiInvalidPreconditionException) |
void | StartScan (in IToiOperationManager::TToiOperationId operationId, in TToiStoreMode storeMode) raises (TToiInvalidArgumentException, TToiInvalidPreconditionException) |
void | ReleaseInstance () |
Public Attributes | |
Operation properties | |
The operation properties defined for scan operations. See IToiOperationManager for more info. | |
const IToiOperationManager::TToiPropertyId | OP_PROPERTY_SERVICES_FOUND = 1 |
Classes | |
struct | TToiDvbCFrontendParameters |
Public Types | |
enum | TToiDvbCModulation { MODULATION_ANY, MODULATION_16_QAM, MODULATION_32_QAM, MODULATION_64_QAM, MODULATION_128_QAM, MODULATION_256_QAM } |
enum | TToiStoreMode { STORE_MODE_OVERWRITE, STORE_MODE_UPDATE } |
The carrier modulation scheme.
enum IToiScanner::TToiStoreMode [inherited] |
This structure defines the store mode that is used when the service information is written to the permanent storage.
void IToiDvbCScanner::AddFrequencyScanParameters | ( | in TToiDvbCFrontendParameters | frontendParameters, | |
in long | startFrequency, | |||
in long | endFrequency, | |||
in long | step | |||
) | raises (TToiInvalidPreconditionException, TToiInvalidArgumentException) |
Add one set of parameters for a frequency band based scan. This method should be called before IToiScanner::StartScan().
Repeatly calling this method is allowed, parameters are stored and when the scan is started each set of parameters/band is scanned, one by one. If this method is called with the same values several times, only the first call has any effect.
frontendParameters | DVB-C tuning parameters. | |
startFrequency | Start frequency in Hz. | |
endFrequency | End frequency in Hz. | |
step | Frequency interval used when scanning, in Hz. |
TToiInvalidPreconditionException | Raised if a scan is already active. | |
TToiInvalidArgumentException | Raised if the arguments are not valid. |
void IToiDvbCScanner::AddNitScanParametersByNetworkId | ( | in TToiDvbCFrontendParameters | frontendParameters, | |
in long | frequency, | |||
in long | networkId | |||
) | raises (TToiInvalidPreconditionException, TToiInvalidArgumentException) |
Add a set of parameters for a scan based on Network Id. The scan will tune to a specific frequency and start listening on SI on that frequency. This method should be called before IToiScanner::StartScan().
Repeatly calling this method is allowed, parameters are stored. When the scan is started the scan operation will perform the scan one parameter set by one, in the order they were added. If this method is called with the same values several times, only the first call will have any effect.
When found, all Service Description Tables (SDTs) associated with that Network Information Table (NIT) are read. Service Information (SI) is acquired without actually scanning different frequencies. It is acquired by reading Service Information on the specified channel.
frontendParameters | Cable tuning parameters. | |
frequency | The frequency in Hz. | |
networkId | The network id to look for in NIT actual/other. |
TToiInvalidPreconditionException | Raised if a scan is already active. | |
TToiInvalidArgumentException | Raised if the arguments are not valid. |
void IToiScanner::Clear | ( | ) | raises (TToiInvalidPreconditionException) [inherited] |
Clear all the scan parameters set by the derived scan interface.
TToiInvalidPreconditionException | Raised if a scan is active. |
void IToiScanner::ReleaseInstance | ( | ) | [inherited] |
This function releases the resources used by this instance. Upon return this object will no longer be available and must not be called.
void IToiScanner::StartScan | ( | in IToiOperationManager::TToiOperationId | operationId, | |
in TToiStoreMode | storeMode | |||
) | raises (TToiInvalidArgumentException, TToiInvalidPreconditionException) [inherited] |
Starts a scan based on the parameters set by the functions of the derived scan interface. The found channel information is stored into permanent storage based on the store mode once the scan process is completed.
When the application receives a IToiOperationObserver::OnOperationResult() call with the operation result IToiOperationManager::OP_RESULT_NONE, then the application can get the number of found services from IToiOperationManager::TToiPropertySequence. The property for this is identified by id OP_PROPERTY_SERVICES_FOUND. Only when the state in IToiOperationManager::TToiOperationInfo reach OPERATION_COMPLETED, the application can get channel info via IToiChannelService.
Calling IToiOperationManager::CancelOperation() will immediately stop an ongoing channel scan. The found services since StartScan() are not saved to permanent storage. Calling IToiOperationManager::ReleaseOperation() will remove the operation identified by operationId. If a scan is in progress, it will immediatly stop and the found services since StartScan() are not saved to permanent storage.
operationId | The operation identifier created by IToiOperationManager retrieved from IToiFrontendService. | |
storeMode | The store mode used for saving the found service information. |
TToiInvalidArgumentException | Raised if the function was called with invalid arguments. | |
TToiInvalidPreconditionException | Raised if no scan parameters are set or one scan is active. |
const IToiOperationManager::TToiPropertyId IToiScanner::OP_PROPERTY_SERVICES_FOUND = 1 [inherited] |
This property indicates the number of services found since the start of the scan, See StartScan().
This constant can also be accessed from toi.consts.IToiScanner.OP_PROPERTY_SERVICES_FOUND.