Gorilla.Audio.FMOD.Channel

• IGorillaFMODChannel

Methods

• protected function GetSystemObject  ( )  : Pointer ;  override;
• protected function GetIndex  ( )  : Integer ;
• protected function GetIsPlaying  ( )  : LongBool ;
• protected function GetIsVirtual  ( )  : LongBool ;
• protected function GetPaused  ( )  : LongBool ;
• protected procedure SetPaused  ( const  AValue :  LongBool ) ;
• protected function GetPosition  ( AIndex :  Cardinal )  : Cardinal ;
• protected procedure SetPosition  ( AIndex :  Cardinal; const  AValue :  Cardinal ) ;
• protected function GetVolume  ( )  : Single ;
• protected procedure SetVolume  ( const  AValue :  Single ) ;
• protected function GetVolumeRamp  ( )  : LongBool ;
• protected procedure SetVolumeRamp  ( const  AValue :  LongBool ) ;
• protected function GetAudibility  ( )  : Single ;
• protected function GetPitch  ( )  : Single ;
• protected procedure SetPitch  ( const  AValue :  Single ) ;
• protected function GetMute  ( )  : LongBool ;
• protected procedure SetMute  ( const  AValue :  LongBool ) ;
• protected function GetLowPassGain  ( )  : Single ;
• protected procedure SetLowPassGain  ( const  AValue :  Single ) ;
• protected function GetMode  ( )  : Cardinal ;
• protected procedure SetMode  ( const  AValue :  Cardinal ) ;
• protected function GetMixMatrix  ( )  : TGorillaFMODMixMatrix ;
• protected procedure SetMixMatrix  ( const  AValue :  TGorillaFMODMixMatrix ) ;
• protected function GetPriority  ( )  : Integer ;
• protected procedure SetPriority  ( const  AValue :  Integer ) ;
• protected function GetFrequency  ( )  : Single ;
• protected procedure SetFrequency  ( const  AValue :  Single ) ;
• protected function GetUserData  ( )  : Pointer ;
• protected procedure SetUserData  ( const  AValue :  Pointer ) ;
• protected function GetDelay  ( )  : TGorillaFMODDelay ;
• protected procedure SetDelay  ( const  AValue :  TGorillaFMODDelay ) ;
• protected function Get3DAttributes  ( )  : TGorillaFMOD3DAttributes ;
• protected procedure Set3DAttributes  ( const  AValue :  TGorillaFMOD3DAttributes ) ;
• protected function Get3DMinMaxDistance  ( )  : TGorillaFMOD3DMinMaxDistance ;
• protected procedure Set3DMinMaxDistance  ( const  AValue :  TGorillaFMOD3DMinMaxDistance ) ;
• protected function Get3DConeSettings  ( )  : TGorillaFMOD3DConeSettings ;
• protected procedure Set3DConeSettings  ( const  AValue :  TGorillaFMOD3DConeSettings ) ;
• protected function Get3DConeOrientation  ( )  : TPoint3D ;
• protected procedure Set3DConeOrientation  ( const  AValue :  TPoint3D ) ;
• protected function Get3DCustomRolloff  ( )  : TGorillaFMOD3DCustomRolloff ;
• protected procedure Set3DCustomRolloff  ( const  AValue :  TGorillaFMOD3DCustomRolloff ) ;
• protected function Get3DOcclusion  ( )  : TGorillaFMOD3DOcclusion ;
• protected procedure Set3DOcclusion  ( const  AValue :  TGorillaFMOD3DOcclusion ) ;
• protected function Get3DSpread  ( )  : Single ;
• protected procedure Set3DSpread  ( const  AValue :  Single ) ;
• protected function Get3DLevel  ( )  : Single ;
• protected procedure Set3DLevel  ( const  AValue :  Single ) ;
• protected function Get3DDopplerLevel  ( )  : Single ;
• protected procedure Set3DDopplerLevel  ( const  AValue :  Single ) ;
• protected function Get3DDistanceFilter  ( )  : TGorillaFMOD3DDistanceFilter ;
• protected procedure Set3DDistanceFilter  ( const  AValue :  TGorillaFMOD3DDistanceFilter ) ;
• protected function GetLoopCount  ( )  : Integer ;
• protected procedure SetLoopCount  ( const  AValue :  Integer ) ;
• public procedure Stop  ( ) ;

  Stops the channel (or all channels in the channel group) from playing. Makes it available for re-use by the priority system.

• public procedure SetReverbProperties  ( AInstance :  Integer; AWet :  Single ) ;

  Sets the wet level (or send level) of a particular reverb instance.

• public function GetReverbProperties  ( AInstance :  Integer )  : Single ;

  Retrieves the wet level (or send level) for a particular reverb instance.

• public procedure SetCallback  ( ACallback :  FMOD_CHANNELCONTROL_CALLBACK ) ;

  Sets a callback to perform action for a specific event.

• public procedure SetPan  ( APan :  Single ) ;

  Sets the pan level, this is a helper to avoid calling ChannelControl::setMixMatrix.

  Parameters

  • APan :  Single  -  Pan level, from -1.0 (left) to 1.0 (right), default = 0 (center).
• public procedure SetMixLevelsOutput  ( AValue :  TGorillaFMODMixLevelsOutput ) ;

  Sets the speaker volume levels for each speaker individually, this is a helper to avoid calling ChannelControl::setMixMatrix.

  Parameters

  • AValue :  TGorillaFMODMixLevelsOutput  - 

    FrontLeft - Volume level for the front left speaker of a multichannel speaker setup, 0.0 (silent), 1.0 (normal volume).

    FrontRight - Volume level for the front right speaker of a multichannel speaker setup, 0.0 (silent), 1.0 (normal volume).

    Center - Volume level for the center speaker of a multichannel speaker setup, 0.0 (silent), 1.0 (normal volume).

    LFE - Volume level for the subwoofer speaker of a multichannel speaker setup, 0.0 (silent), 1.0 (normal volume).

    SurroundLeft - Volume level for the surround left speaker of a multichannel speaker setup, 0.0 (silent), 1.0 (normal volume).

    SurroundRight - Volume level for the surround right speaker of a multichannel speaker setup, 0.0 (silent), 1.0 (normal volume).

    BackLeft - Volume level for the back left speaker of a multichannel speaker setup, 0.0 (silent), 1.0 (normal volume).

    BackRight - Volume level for the back right speaker of a multichannel speaker setup, 0.0 (silent), 1.0 (normal volume).

• public procedure SetMixLevelsInput  ( const  ALevels :  TArray<System.Single>; const  ANumlevels :  Integer ) ;

  Sets the incoming volume level for each channel of a multi-channel sound. This is a helper to avoid calling ChannelControl::setMixMatrix. A multi-channel sound is a single sound that contains from 1 to 32 channels of sound data, in an interleaved fashion. If in the extreme case, a 32ch wave file was used, an array of 32 floating point numbers denoting their volume levels would be passed in to the levels parameter, and 32 for the numlevels parameter.

  Parameters

  • const  ALevels :  TArray<System.Single>  -  Array of volume levels for each incoming channel. Number of levels in the array, from 0 to 32 inclusive.
  • const  ANumlevels :  Integer  -  Array of volume levels for each incoming channel. Number of levels in the array, from 0 to 32 inclusive.
• public procedure GetDSPClock  ( var  ADSPClock :  UInt64; var  AParentClock :  UInt64 ) ;

  Retrieves the DSP clock values which count up by the number of samples per second in the software mixer, i.e. if the default sample rate is 48KHz, the DSP clock increments by 48000 per second.

  Parameters

  • var  ADSPClock :  UInt64  -  Address of a variable to receive the DSP clock value for the head DSP node. Address of a variable to receive the DSP clock value for the tail DSP node.
  • var  AParentClock :  UInt64  -  Address of a variable to receive the DSP clock value for the head DSP node. Address of a variable to receive the DSP clock value for the tail DSP node.
• public procedure AddFadePoint  ( ADSPClock :  UInt64; AVolume :  Single ) ;

  Add a volume point to fade from or towards, using a clock offset and 0 to 1 volume level.

  Parameters

  • ADSPClock :  UInt64  -  DSP clock of the parent channel group to set the fade point volume. Volume level where 0 is silent and 1.0 is normal volume. Amplification is supported.
  • AVolume :  Single  -  DSP clock of the parent channel group to set the fade point volume. Volume level where 0 is silent and 1.0 is normal volume. Amplification is supported.
• public procedure SetFadePointRamp  ( ADSPClock :  UInt64; AVolume :  Single ) ;

  Add a short 64 sample volume ramp to the specified time in the future using fade points.

  Parameters

  • ADSPClock :  UInt64  -  DSP clock of the parent channel group when the volume will be ramped to. Volume level where 0 is silent and 1.0 is normal volume. Amplification is supported.
  • AVolume :  Single  -  DSP clock of the parent channel group when the volume will be ramped to. Volume level where 0 is silent and 1.0 is normal volume. Amplification is supported.
• public procedure RemoveFadePoints  ( ADSPClock_Start :  UInt64; ADSPClock_End :  UInt64 ) ;

  Remove volume fade points on the timeline. This function will remove multiple fade points with a single call if the points lay between the 2 specified clock values (inclusive).

  Parameters

  • ADSPClock_Start :  UInt64  -  DSP clock of the parent channel group to start removing fade points from. DSP clock of the parent channel group to start removing fade points to.
  • ADSPClock_End :  UInt64  -  DSP clock of the parent channel group to start removing fade points from. DSP clock of the parent channel group to start removing fade points to.
• public function GetFadePoints  ( const  AMaxPoints :  Integer  =  $8 )  : TGorillaFMODFadePoints ;

  Retrieve information about fade points stored within a Channel or ChannelGroup.

• public function GetDSP  ( AIndex :  Integer )  : IGorillaFMODInterface ;

  Retrieve the DSP unit at the specified index.

  Parameters

  • AIndex :  Integer  -  Offset into the DSP chain, see FMOD_CHANNELCONTROL_DSP_INDEX for special named offsets.
• public procedure AddDSP  ( AIndex :  Integer; ADSP :  IGorillaFMODInterface ) ;  overload;

  Add a pre-created DSP unit to the specified index in the DSP chain.

  Parameters

  • AIndex :  Integer  -  Offset to add this DSP unit at in the DSP chain, see FMOD_CHANNELCONTROL_DSP_INDEX for special named offsets. Interface to a pre-created DSP unit to be inserted at the specified offset (IGorillaFMODDSP).
  • ADSP :  IGorillaFMODInterface  -  Offset to add this DSP unit at in the DSP chain, see FMOD_CHANNELCONTROL_DSP_INDEX for special named offsets. Interface to a pre-created DSP unit to be inserted at the specified offset (IGorillaFMODDSP).
• public procedure RemoveDSP  ( ADSP :  IGorillaFMODInterface ) ;  overload;

  Remove a particular DSP unit from the DSP chain.

  Parameters

  • ADSP :  IGorillaFMODInterface  -  Interface to a DSP unit (that exists in the DSP chain) you wish to remove (IGorillaFMODDSP).
• public function GetNumDSPs  ( )  : Integer ;

  Retrieves the number of DSP units in the DSP chain.

• public procedure SetDSPIndex  ( ADSP :  IGorillaFMODInterface; AIndex :  Integer ) ;  overload;

  Moves the position in the DSP chain of a specified DSP unit.

  Parameters

  • ADSP :  IGorillaFMODInterface  -  Interface to a DSP unit that exists in the DSP chain (IGorillaFMODDSP). Offset in the DSP chain to move the DSP to, see FMOD_CHANNELCONTROL_DSP_INDEX for special named offsets.
  • AIndex :  Integer  -  Interface to a DSP unit that exists in the DSP chain (IGorillaFMODDSP). Offset in the DSP chain to move the DSP to, see FMOD_CHANNELCONTROL_DSP_INDEX for special named offsets.
• public function GetDSPIndex  ( ADSP :  IGorillaFMODInterface )  : Integer ;  overload;

  Retrieves the index in the DSP chain of the provided DSP.

  Parameters

  • ADSP :  IGorillaFMODInterface  -  Interface to a DSP unit that exists in the DSP chain (IGorillaFMODDSP).
• public procedure SetChannelGroup  ( AChannelGroup :  IGorillaFMODChannelGroup ) ;  overload;

  Sets a channel to belong to a specified channel group. A channel group can contain many channels.

• public function GetChannelGroup  ( )  : IGorillaFMODChannelGroup ;  overload;

  Retrieves the currently assigned channel group for the channel.

• public procedure SetLoopPoints  ( ALoopStartType :  Cardinal; ALoopEndType :  Cardinal; AValue :  TGorillaFMODLoopPoints ) ;

  Sets the loop points within the channel.

  Parameters

  • ALoopStartType :  Cardinal  -  The time format used for the loop start point. See FMOD_TIMEUNIT. The time format used for the loop end point. See FMOD_TIMEUNIT.

    LoopStart - The loop start point. This point in time is played, so it is inclusive.

    LoopEnd - The loop end point. This point in time is played, so it is inclusive.

  • ALoopEndType :  Cardinal  -  The time format used for the loop start point. See FMOD_TIMEUNIT. The time format used for the loop end point. See FMOD_TIMEUNIT.

    LoopStart - The loop start point. This point in time is played, so it is inclusive.

    LoopEnd - The loop end point. This point in time is played, so it is inclusive.

  • AValue :  TGorillaFMODLoopPoints  -  The time format used for the loop start point. See FMOD_TIMEUNIT. The time format used for the loop end point. See FMOD_TIMEUNIT.

    LoopStart - The loop start point. This point in time is played, so it is inclusive.

    LoopEnd - The loop end point. This point in time is played, so it is inclusive.

• public function GetLoopPoints  ( ALoopStartType :  Cardinal; ALoopEndType :  Cardinal )  : TGorillaFMODLoopPoints ;

  Retrieves the loop points for the channel.

  Parameters

  • ALoopStartType :  Cardinal  -  The time format used for the loop start point. See FMOD_TIMEUNIT. The time format used for the loop end point. See FMOD_TIMEUNIT.
  • ALoopEndType :  Cardinal  -  The time format used for the loop start point. See FMOD_TIMEUNIT. The time format used for the loop end point. See FMOD_TIMEUNIT.
• public function GetCurrentSound  ( )  : IGorillaFMODInterface ;

  Retrieves the currently playing sound for this channel.

Properties

• public Index : Integer

  Retrieves the internal channel index for a channel.

  read GetIndex
  
• public IsPlaying : LongBool

  Retrieves the playing state.

  read GetIsPlaying
  
• public IsVirtual : LongBool

  Retrieves whether the channel is virtual (emulated) or not due to the virtual channel management system.

             TRUE = inaudible and currently being emulated at no CPU cost
             

             FALSE = real voice that should be audible.
             

  read GetIsVirtual
  
• public Paused : LongBool

  Retrieves the paused state. Address of a variable that receives the current paused state, true = paused, false = not paused.

  read GetPaused
  write SetPaused
  
• public Position[Index] : Cardinal

  Returns the current playback position for the specified channel.

  read GetPosition
  write SetPosition
  
• public Volume : Single

  The linear volume level.

  read GetVolume
  write SetVolume
  
• public VolumeRamp : LongBool

  The volume ramp state.

  read GetVolumeRamp
  write SetVolumeRamp
  
• public Audibility : Single

  Retrieves the combined volume after 3D spatialization and geometry occlusion calculations including any volumes set via the API.

  read GetAudibility
  
• public Pitch : Single

  The pitch value, 0.5 = half pitch, 2.0 = double pitch, etc.

  read GetPitch
  write SetPitch
  
• public Mute : LongBool

  The current mute state, true = mute (silent), false = normal volume.

  read GetMute
  write SetMute
  
• public LowPassGain : Single

  Retrieves the gain of the dry signal when lowpass filtering is applied.

  read GetLowPassGain
  write SetLowPassGain
  
• public Mode : Cardinal

  The mode bit flags for the channel.

  read GetMode
  write SetMode
  
• public MixMatrix : TGorillaFMODMixMatrix

  A 2D pan matrix that maps input channels (columns) to output speakers (rows).

  read GetMixMatrix
  write SetMixMatrix
  
• public Priority : Integer

  The priority for the channel after it has been played. Priority for the channel, from 0 (most important) to 256 (least important), default = 128.

  read GetPriority
  write SetPriority
  
• public Frequency : Single

  The channel frequency or playback rate, in Hz. Frequency value in Hz. This value can also be negative to play the sound backwards (negative frequencies allowed with non-stream sounds only).

  read GetFrequency
  write SetFrequency
  
• public UserData : Pointer

  A user value that can be retrieved with ChannelControl::getUserData.

  read GetUserData
  write SetUserData
  
• public Delay : TGorillaFMODDelay

  Sets a start (and/or stop) time relative to the parent channel group DSP clock, with sample accuracy.

  read GetDelay
  write SetDelay
  
• public _3DAttributes : TGorillaFMOD3DAttributes

  Sets the position and velocity used to apply panning, attenuation and doppler.

  read Get3DAttributes
  write Set3DAttributes
  
• public _3DMinMaxDistance : TGorillaFMOD3DMinMaxDistance

  The minimum and maximum audible distance.

  read Get3DMinMaxDistance
  write Set3DMinMaxDistance
  
• public _3DConeSettings : TGorillaFMOD3DConeSettings

  The angles that define the sound projection cone including the volume when outside the cone.

  read Get3DConeSettings
  write Set3DConeSettings
  
• public _3DConeOrientation : TPoint3D

  The orientation of the sound projection cone. Coordinates of the sound cone orientation vector, the vector information represents the center of the sound cone.

  read Get3DConeOrientation
  write Set3DConeOrientation
  
• public _3DCustomRolloff : TGorillaFMOD3DCustomRolloff

  Retrieves a pointer to the current custom rolloff curve.

  read Get3DCustomRolloff
  write Set3DCustomRolloff
  
• public _3DOcclusion : TGorillaFMOD3DOcclusion

  The occlusion factors manually for when the FMOD geometry engine is not being used.

  read Get3DOcclusion
  write Set3DOcclusion
  
• public _3DSpread : Single

  The spread of a 3D sound in speaker space. Speaker spread angle. 0 = all sound channels are located at the same speaker location and is 'mono'. 360 = all sound channels are located at the opposite speaker location to the speaker location that it should be according to 3D position. Default = 0.

  read Get3DSpread
  write Set3DSpread
  
• public _3DLevel : Single

  How much the 3D engine has an effect on the channel, versus that set by 2D panning functions.

  read Get3DLevel
  write Set3DLevel
  
• public _3DDopplerLevel : Single

  The amount by which doppler is scaled.

  read Get3DDopplerLevel
  write Set3DDopplerLevel
  
• public _3DDistanceFilter : TGorillaFMOD3DDistanceFilter

  Control the behaviour of a 3D distance filter, whether to enable or disable it, and frequency characteristics.

  read Get3DDistanceFilter
  write Set3DDistanceFilter
  
• public LoopCount : Integer

  A channel to loop a specified number of times before stopping.

  read GetLoopCount
  write SetLoopCount