JSDoc: Namespace: dvbManager

Main object to manage DVB-C/T/T2 subsystem for MAG270/MAG275 boards only.

To start playback of DVB channel player should be started with the following URL: dvb://<channel_id> where channel_id can be obtained from "id" field in the result of calling dvbManager.GetChannelList or dvbManager.GetChannelInfo.

Current DVB type is set via dvb_type bootloader environment variable with the following values:

DVB-C
DVB-T
DVB-T2
DVB-S2

Error codes table:

Value	Description
0	operation successful
1	error
2	unsupported
0x1c	bad handle

Possible events:

event 40 (0x28) "DVB progress"

When any new channels is found, player will trigger event 40 (0x28) with the following event data:

{"id": "C_4601_634000", "name": "channel_name", "frequency": 634000, "frontendIndex": 0, "polarization": "H", "symbolRate": 27500000}

where

Name	Description
id	channel unique identifier
name	channel name
frequency	channel frequency (in kHz)
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
polarization	satellite signal polarization ("`V`" - vertical, "`H`" - horizontal, "`CL`" - circular left, "`CR`" - circular right ) to tune to
symbolRate	satellite signal symbol rate (symbols per second)

event 41 (0x29) "DVB channel found"

When scan starts to search new frequency, player will trigger event 41 (0x29) with the following event data:

{"state": "searching", "channel": 23, "frequency": 650000, "progress": 33, "frontendIndex": 0, "polarization": "H", "symbolRate": 27500000}"

where

Name	Description
state	scan state: "`searching`" or "`finished`"
channel	channel number in frequency grid
frequency	channel frequency (in kHz)
progress	scan progress in range [0..100]
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
polarization	satellite signal polarization ("`V`" - vertical, "`H`" - horizontal, "`CL`" - circular left, "`CR`" - circular right ) to tune to
symbolRate	satellite signal symbol rate (symbols per second)

event 42 (0x2A) "EPG updated"

When new EPG is found, player will trigger event 42 (0x2A) with the following event data:

{"id": "C_4601_634000", "brief": false}

where

Name	Description
id	channel unique identifier which EPG is updated
brief	true - brief EPG is updated, false - schedule EPG is updated

See dvbManager.GetEPGBrief and dvbManager.GetEPGSchedule.

event 43 (0x2B) "Power overload"

When antenna power is enabled but antenna is not active then antenna power will be disabled and event 43 (0x2B) will be triggered to notify JavaScript API user. Example:

{"frontendIndex": 0}

where

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Methods

ClearChannelList <static> ClearChannelList () → {number}

Clear DVB channel list.

Returns:

Type	Description
number	operation status (see error codes table)

Type

Description

number

operation status

(see error codes table)

ClearChannelList <static> ClearChannelList ( config ) → {number}

Clear DVB channel list.

Supports DVB-S2.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Returns:

Type	Description
number	operation status (see error codes table)

Type

Description

number

operation status

(see error codes table)

GetAntennaPower <static> GetAntennaPower () → {boolean}

Get whether antenna power from STB is enabled.

See dvbManager.SetAntennaPower.

Returns:

Type

Description

boolean

possible values:

Value	Description
true	power is enabled
false	power is disabled

GetAntennaPower <static> GetAntennaPower ( config ) → {boolean}

Get whether antenna power from STB is enabled.

Supports DVB-S2.

See dvbManager.SetAntennaPower.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Returns:

Type

Description

boolean

possible values:

Value	Description
true	power is enabled
false	power is disabled

GetBitErrorRate <static> GetBitErrorRate () → {number}

Get Bit Error Rate.

Returns:

Type	Description
number	(Bit Error Rate) * 10^7

GetBitErrorRate <static> GetBitErrorRate ( config ) → {number}

Get Bit Error Rate.

Supports DVB-S2.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Returns:

Type	Description
number	(Bit Error Rate) * 10^7

GetChannelInfo <static> GetChannelInfo ( config ) → {dvbManager.ChannelInfo}

Get information about specified channel in JSON format.

Supports DVB-S2.

See dvbManager.ChannelInfo.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
id	channel unique identifier from dvbManager.GetChannelList

Returns:

Type	Description
dvbManager.ChannelInfo	channel description in JSON format

GetChannelInfo <static> GetChannelInfo ( id ) → {dvbManager.ChannelInfo}

Get information about specified channel in JSON format.

See dvbManager.ChannelInfo.

Parameters:

Name	Type	Description
`id`	string	channel unique identifier from dvbManager.GetChannelList

Returns:

Type	Description
dvbManager.ChannelInfo	channel description in JSON format

GetChannelList <static> GetChannelList ( config ) → {dvbManager.ChannelInfoList}

Get full list of DVB channels in JSON format.

Supports DVB-S2.

See dvbManager.ChannelInfo, dvbManager.ChannelInfoList.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Returns:

Type	Description
dvbManager.ChannelInfoList	list of channels descriptions in JSON format

GetChannelList <static> GetChannelList () → {dvbManager.ChannelInfoList}

Get full list of DVB channels in JSON format.

See dvbManager.ChannelInfo, dvbManager.ChannelInfoList.

Returns:

Type	Description
dvbManager.ChannelInfoList	list of channels descriptions in JSON format

GetCurrentScanTypes <static> GetCurrentScanTypes () → {string}

Get currently supported scan types for this STB.

The difference with dvbManager.GetSupportedScanTypes is: result of dvbManager.GetCurrentScanTypes depends on current DVB Type e.i. for MAG275 it can be either DVB-C or DVB-T and DVB-T2, for MAG356 it can be DVB-S2.

See dvbManager.SignalType.

Returns:

Type	Description
string	scan types list in JSON format

Examples

// raw data
dvbManager.GetCurrentScanTypes();
// execution result
'[{"type":1,"name":"DVB-C"},{"type":2,"name":"DVB-T"},{"type":3,"name":"DVB-T2"}]'

// parsed JSON data
JSON.parse(dvbManager.GetCurrentScanTypes());
// execution result
[
    {type: 1, name: "DVB-C"},
    {type: 2, name: "DVB-T"},
    {type: 3, name: "DVB-T2"}
]

GetCurrentScanTypes <static> GetCurrentScanTypes ( config ) → {string}

Get currently supported scan types for this STB.

Supports DVB-S2.

See dvbManager.SignalType.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Returns:

Type	Description
string	scan types list in JSON format

Examples

// raw data
dvbManager.GetCurrentScanTypes(JSON.stringify({frontendIndex:1}));
// execution result
'[{"type":1,"name":"DVB-C"},{"type":2,"name":"DVB-T"},{"type":3,"name":"DVB-T2"}, {"type":4,"name":"DVB-S2"}]'

// parsed JSON data
JSON.parse(dvbManager.GetCurrentScanTypes(JSON.stringify({frontendIndex:1})));
// execution result
[
    {type: 1, name: "DVB-C"},
    {type: 2, name: "DVB-T"},
    {type: 3, name: "DVB-T2"},
    {type: 4, name: "DVB-S2"}
]

GetEPGBrief <static> GetEPGBrief ( id ) → {dvbManager.EpgInfoList}

Get brief EPG (present and following program) for specified channel.

See dvbManager.EpgInfoList.

Parameters:

Name	Type	Description
`id`	string	channel unique identifier from dvbManager.GetChannelList

Returns:

Type	Description
dvbManager.EpgInfoList	EPG brief in JSON format

GetEPGBrief <static> GetEPGBrief ( config ) → {dvbManager.EpgInfoList}

Get brief EPG (present and following program) for specified channel.

Supports DVB-S2.

See dvbManager.EpgInfoList.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
id	channel unique identifier from dvbManager.GetChannelList

Returns:

Type	Description
dvbManager.EpgInfoList	EPG brief in JSON format

GetEPGSchedule <static> GetEPGSchedule ( id, day ) → {dvbManager.EpgInfoList}

Get schedule EPG (for long period) for specified channel.

See dvbManager.EpgInfoList.

Parameters:

Name Type Argument Default Description

Name	Type	Argument	Default	Description
`id`	string			channel unique identifier from dvbManager.GetChannelList
`day`	number	<optional>	-1	number of days from current day which should be available in result (-1 means full schedule EPG)

id

string

channel unique identifier from dvbManager.GetChannelList

day

number

-1

number of days from current day which should be available in result

(-1 means full schedule EPG)

Returns:

Type	Description
dvbManager.EpgInfoList	schedule EPG in JSON format

GetEPGSchedule <static> GetEPGSchedule ( config ) → {dvbManager.EpgInfoList}

Get schedule EPG (for long period) for specified channel.

Supports DVB-S2.

See dvbManager.EpgInfoList.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
id	channel unique identifier from dvbManager.GetChannelList
day	number of days from current day which should be available in result (-1 means full schedule EPG)

Returns:

Type	Description
dvbManager.EpgInfoList	schedule EPG in JSON format

GetSignalLevel <static> GetSignalLevel ( config ) → {number}

Get signal level.

Supports DVB-S2.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Returns:

Type	Description
number	signal level [0..100]

GetSignalLevel <static> GetSignalLevel () → {number}

Get signal level.

Returns:

Type	Description
number	signal level [0..100]

GetSignalQuality <static> GetSignalQuality () → {number}

Get signal quality.

Returns:

Type	Description
number	signal quality [0..100]

GetSignalQuality <static> GetSignalQuality ( config ) → {number}

Get signal quality.

Supports DVB-S2.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Returns:

Type	Description
number	signal quality [0..100]

GetSupportedScanTypes <static> GetSupportedScanTypes () → {string}

Get supported scan types for this STB.

See dvbManager.SignalType.

Returns:

Type	Description
string	scan types list in JSON format

Examples

// raw data
dvbManager.GetSupportedScanTypes();
// execution result
'[{"type":1,"name":"DVB-C"},{"type":2,"name":"DVB-T"},{"type":3,"name":"DVB-T2"}]'

// parsed JSON data
JSON.parse(dvbManager.GetSupportedScanTypes());
// execution result
[
    {type: 1, name: "DVB-C"},
    {type: 2, name: "DVB-T"},
    {type: 3, name: "DVB-T2"}
]

GetSupportedScanTypes <static> GetSupportedScanTypes ( config ) → {string}

Get supported scan types for this STB.

Supports DVB-S2.

See dvbManager.SignalType.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Returns:

Type	Description
string	scan types list in JSON format

Examples

// raw data
dvbManager.GetSupportedScanTypes(JSON.stringify({frontendIndex:1}));
// execution result
'[{"type":1,"name":"DVB-C"},{"type":2,"name":"DVB-T"},{"type":3,"name":"DVB-T2"},{"type":4,"name":"DVB-S2"}]'

// parsed JSON data
JSON.parse(dvbManager.GetSupportedScanTypes(JSON.stringify({frontendIndex:1})));
// execution result
[
    {type: 1, name: "DVB-C"},
    {type: 2, name: "DVB-T"},
    {type: 3, name: "DVB-T2"}
    {type: 4, name: "DVB-S2"}
]

RemoveChannel <static> RemoveChannel ( id ) → {number}

Remove specified DVB channel.

Parameters:

Name	Type	Description
`id`	string	channel unique identifier from dvbManager.GetChannelList

Returns:

Type

Description

number

operation status

(see error codes table)

RemoveChannel <static> RemoveChannel ( config ) → {number}

Remove specified DVB channel.

Supports DVB-S2.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
id	channel unique identifier from dvbManager.GetChannelList

Returns:

Type

Description

number

operation status

(see error codes table)

SetAntennaPower <static> SetAntennaPower ( config ) → {number}

Enable or disable antenna power from STB.

Used for DVB-T/T2/S2 to supply power to active antenna.

In case when connected antenna is not active an event 33 (0x2B) will be triggered and antenna power will be disabled.

Supports DVB-S2.

See dvbManager.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
on	state

Returns:

Type

Description

number

operation status

(see error codes table)

SetAntennaPower <static> SetAntennaPower ( on ) → {number}

Enable or disable antenna power from STB.

Used for DVB-T/T2 to supply power to active antenna.

In case when connected antenna is not active an event 33 (0x2B) will be triggered and antenna power will be disabled.

See dvbManager.

Parameters:

Name	Type	Description
`on`	boolean

Returns:

Type

Description

number

operation status

(see error codes table)

SetPreferredLang <static> SetPreferredLang ( config ) → {number}

Set preferred language for DVB subsystem (EPG etc.).

Supports DVB-S2.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
lang1	preferred language in ISO 639-2 format (Alpha-3 code)
lang2	preferred language in ISO 639-1 format (Alpha-2 code)

Returns:

Type

Description

number

operation status

(see error codes table)

Example

dvbManager.SetPreferredLang(JSON.stringify({frontendIndex:1, lang1: 'eng', lang2: 'en'}));

SetPreferredLang <static> SetPreferredLang ( lang1, lang2 ) → {number}

Set preferred language for DVB subsystem (EPG etc.).

Parameters:

Name	Type	Description
`lang1`	string	preferred language in ISO 639-2 format (Alpha-3 code)
`lang2`	string	preferred language in ISO 639-1 format (Alpha-2 code)

Returns:

Type

Description

number

operation status

(see error codes table)

Example

dvbManager.SetPreferredLang('eng', 'en');

SetScanParams <static> SetScanParams ( params ) → {number}

Set params for DVB channel scan.

Modulation values list:

Value	Description
0	AUTO
1	16QAM
2	32QAM
3	64QAM
4	128QAM
5	256QAM

Supports DVB-S2.

Parameters:

Name Type Description

params

string

configuration object in JSON format

Name	Description
type	dvb signal type (see dvbManager.SignalType)
symRate	symbolRate in Kb/sec
modulation	see modulation values list
scanMode	0 - network, 1 - full, 2 - fast (use NIT)
frequency	frequency for fast scan in KHz
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
networkId	network ID (0 - auto)

Returns:

Type

Description

number

operation status

(see error codes table)

Example

dvbManager.SetScanParams(JSON.stringify({
    type: 1,
    symRate: 6875,
    modulation: 4,
    scanMode: 1,
    frequency: 506000,
    networkId: 3333
}));

StartChannelScan <static> StartChannelScan ( signalType ) → {number}

Start channel scanning.

During scan player can trigger 2 events.

See dvbManager.

Parameters:

Name	Type	Description
`signalType`	dvbManager.SignalType	dvb signal type

Returns:

Type

Description

number

operation status

(see error codes table)

StartChannelScan <static> StartChannelScan ( config ) → {number}

Start channel scanning.

During scan player can trigger 2 events.

Supports DVB-S2.

See dvbManager.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
signalType	dvb signal type (see dvbManager.SignalType)

Returns:

Type

Description

number

operation status

(see error codes table)

StartChannelScanManual <static> StartChannelScanManual ( from, to, signalType, bandwidth, step ) → {number}

Start manual channel scanning.

During scan player can trigger 2 events.

See dvbManager, dvbManager.SignalType.

Parameters:

Name	Type	Description
`from`	number	scan range start frequency (in kHz)
`to`	number	scan range end frequency (in kHz)
`signalType`	dvbManager.SignalType	dvb signal type
`bandwidth`	number	channel bandwidth in MHz. e.i. 6, 7, 8
`step`	number	frequency step (in kHz)

Returns:

Type

Description

number

operation status

(see error codes table)

StartChannelScanManual <static> StartChannelScanManual ( config ) → {number}

Start manual channel scanning.

During scan player can trigger 2 events.

Supports DVB-S2.

See dvbManager, dvbManager.SignalType.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
signalType	dvb signal type (see dvbManager.SignalType)
from	scan range start frequency (in kHz)
to	scan range end frequency (in kHz)
bandwidth	channel bandwidth in MHz. e.i. 6, 7, 8
step	frequency step (in kHz)

Returns:

Type

Description

number

operation status

(see error codes table)

StopChannelScan <static> StopChannelScan () → {number}

Stop channel scan.

Returns:

Type

Description

number

operation status

(see error codes table)

StopChannelScan <static> StopChannelScan ( config ) → {number}

Stop channel scan.

Supports DVB-S2.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Returns:

Type

Description

number

operation status

(see error codes table)

TuneChannel <static> TuneChannel ( config ) → {number}

Tune receiver to specified frequency.

Supports DVB-S2.

See dvbManager.SignalType.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]
id	channel unique identifier from dvbManager.GetChannelList
signalType	dvb signal type (see dvbManager.SignalType)

Returns:

Type

Description

number

operation status

(see error codes table)

TuneChannel <static> TuneChannel ( frequency, signalType ) → {number}

Tune receiver to specified frequency.

See dvbManager.SignalType.

Parameters:

Name	Type	Description
`frequency`	number	frequency (in kHz)
`signalType`	dvbManager.SignalType	dvb signal type

Returns:

Type

Description

number

operation status

(see error codes table)

UnTuneChannel <static> UnTuneChannel () → {number}

Untune receiver from frequency.

Returns:

Type

Description

number

operation status

(see error codes table)

UnTuneChannel <static> UnTuneChannel ( config ) → {number}

Untune receiver from frequency.

Supports DVB-S2.

Parameters:

Name Type Description

config

string

configuration object in JSON format

Name	Description
frontendIndex	index of satellite frontend (tuner) to be used [0..n]

Returns:

Type

Description

number

operation status

(see error codes table)

Type Definitions

ChannelInfo ChannelInfo

Information about a channel in JSON format.

See dvbManager.ChannelInfoList.

Type:

string

Properties:

Name	Type	Description
`frequency`	number	channel frequency (in kHz)
`frontendIndex`	number	index of satellite frontend (tuner) to be used [0..n]
`polarization`	string	satellite signal polarization ("`V`" - vertical, "`H`" - horizontal, "`CL`" - circular left, "`CR`" - circular right ) to tune to
`symbolRate`	number	satellite signal symbol rate (symbols per second)
`id`	string	unique channel identifier
`scrambled`	boolean	scrambled channel indication
`name`	string	channel name
`provider`	string	service provider name
`isRadio`	boolean	radio channel indicator
`channel_number`	number	logical channel number in network (0 means that logical channel number is not found)

Example

// parsed JSON data
{
    frequency: 634000,
    frontendIndex: 0,
    polarization: "H",
    symbolRate: 27500000,
    id: "C_4601_634000",
    scrambled: "false",
    name: "ServiceName",
    provider: "testProvider",
    isRadio: "false",
    channel_number: 23
}

ChannelInfoList ChannelInfoList

List of DVB channels data in JSON format.

See dvbManager.ChannelInfo.

Type:

string

Properties:

Name	Type	Description
`channels`	Array.<dvbManager.ChannelInfo>	individual channels data

Example

// parsed JSON data
{
    channels: [{
        frequency: 634000,
        frontendIndex: 0,
        polarization: "H",
        symbolRate: 27500000,
        id: "C_4601_634000",
        scrambled: "false",
        name: "ServiceName",
        provider: "testProvider",
        isRadio: "false",
        channel_number: 23
    }]
}

EpgInfo EpgInfo

Brief EPG (present and following program) for specified channel in JSON format.

See dvbManager.EpgInfoList.

Type:

string

Properties:

Name	Type	Description
`start`	number	event start time in UTC seconds
`duration`	number	event duration in seconds
`name`	string	event name
`info`	string	event info
`details`	string	detailed event info

Example

// parsed JSON data
{
    start: 1377846480,
    duration: 3300,
    name: "Program1_name",
    info: "program1_info",
    details: "program1_details"
}

EpgInfoList EpgInfoList

List of brief EPG (present and following program) in JSON format.

See dvbManager.EpgInfo.

Type:

string

Properties:

Name	Type	Description
`events`	Array.<dvbManager.EpgInfo>	EPG data

Example

// parsed JSON data
{
    events: [
        {
            start: 1377846480,
            duration: 3300,
            name:"Program1_name",
            info:"program1_info",
            details:"program1_details"
        },
        {
            start: 1377846480,
            duration: 3300,
            name:"Program1_name",
            info:"program1_info",
            details:"program1_details"
        }
    ]
}

SignalType SignalType

DVB signal type.

Value	Description
1	DVB-C signal
2	DVB-T signal
3	DVB-T2 signal (not available for MAG270)
4	DVB-S2 signal

Type:

number