ReaScript API — Documentation

creates a new media item.

Returns the index of the created marker/region, or -1 on failure. Supply wantidx>=0 if you want a particular index number, but you'll get a different index number a region and wantidx is already in use.

Returns the index of the created marker/region, or -1 on failure. Supply wantidx>=0 if you want a particular index number, but you'll get a different index number a region and wantidx is already in use. color should be 0 (default color), or ColorToNative(r,g,b)|0x1000000

Add a ReaScript (return the new command ID, or 0 if failed) or remove a ReaScript (return >0 on success). Use commit==true when adding/removing a single script. When bulk adding/removing n scripts, you can optimize the n-1 first calls with commit==false and commit==true for the last call.

creates a new take in an item

Deprecated. Use SetTempoTimeSigMarker with ptidx=-1.

forceset=0,doupd=true,centermode=-1 for default

Returns true if function_name exists in the REAPER API

Displays a message window if the API was successfully called.

nudgeflag: &1=set to value (otherwise nudge by value), &2=snap
nudgewhat: 0=position, 1=left trim, 2=left edge, 3=right edge, 4=contents, 5=duplicate, 6=edit cursor
nudgeunit: 0=ms, 1=seconds, 2=grid, 3=256th notes, ..., 15=whole notes, 16=measures.beats (1.15 = 1 measure + 1.5 beats), 17=samples, 18=frames, 19=pixels, 20=item lengths, 21=item selections
value: amount to nudge by, or value to set to
reverse: in nudge mode, nudges left (otherwise ignored)
copies: in nudge duplicate mode, number of copies (otherwise ignored)

arms a command (or disarms if 0 passed) in section sectionname (empty string for main)

open all audio and MIDI devices, if not open

is in pre-buffer? threadsafe

is audio running at all? threadsafe

close all audio and MIDI devices, if open

Returns true if the underlying samples (track or media item take) have changed, but does not update the audio accessor, so the user can selectively call AudioAccessorValidateState only when needed. See CreateTakeAudioAccessor, CreateTrackAudioAccessor, DestroyAudioAccessor, GetAudioAccessorEndTime, GetAudioAccessorSamples.

Force the accessor to reload its state from the underlying track or media item take. See CreateTakeAudioAccessor, CreateTrackAudioAccessor, DestroyAudioAccessor, AudioAccessorStateChanged, GetAudioAccessorStartTime, GetAudioAccessorEndTime, GetAudioAccessorSamples.

Validates the current state of the audio accessor -- must ONLY call this from the main thread. Returns true if the state changed.

-1 = bypass all if not all bypassed,otherwise unbypass all

Calculates loudness statistics of media via dry run render. Statistics will be displayed to the user; call GetSetProjectInfo_String("RENDER_STATS") to retrieve via API. Returns 1 if loudness was calculated successfully, -1 if user canceled the dry run render.

Calculate normalize adjustment for source media. normalizeTo: 0=LUFS-I, 1=RMS-I, 2=peak, 3=true peak, 4=LUFS-M max, 5=LUFS-S max. normalizeTarget: dBFS or LUFS value. normalizeStart, normalizeEnd: time bounds within source media for normalization calculation. If normalizationStart=0 and normalizationEnd=0, the full duration of the media will be used for the calculation.

Clear the ReaScript console. See ShowConsoleMsg

resets the global peak caches

Extract RGB values from an OS dependent color. See ColorToNative.

Make an OS dependent color from RGB values (e.g. RGB() macro on Windows). r,g and b are in [0..255]. See ColorFromNative.

Returns the number of shortcuts that exist for the given command ID.
see GetActionShortcutDesc, DeleteActionShortcut, DoActionShortcutDialog.

Returns the number of automation items on this envelope. See GetSetAutomationItemInfo

Returns the number of points in the envelope. See CountEnvelopePointsEx.

Returns the number of points in the envelope.
autoitem_idx=-1 for the underlying envelope, 0 for the first automation item on the envelope, etc.
For automation items, pass autoitem_idx|0x10000000 to base ptidx on the number of points in one full loop iteration,
even if the automation item is trimmed so that not all points are visible.
Otherwise, ptidx will be based on the number of visible points in the automation item, including all loop iterations.
See GetEnvelopePointEx, SetEnvelopePointEx, InsertEnvelopePointEx, DeleteEnvelopePointEx.

count the number of items in the project (proj=0 for active project)

num_markersOut and num_regionsOut may be NULL.

count the number of selected items in the project (proj=0 for active project)

Count the number of selected tracks in the project (proj=0 for active project). This function ignores the master track, see CountSelectedTracks2.

Count the number of selected tracks in the project (proj=0 for active project).

See GetTakeEnvelope

count the number of takes in the item

Count the number of FX parameter knobs displayed on the track control panel.

Count the number of tempo/time signature markers in the project. See GetTempoTimeSigMarker, SetTempoTimeSigMarker, AddTempoTimeSigMarker.

see GetTrackEnvelope

count the number of items in the track

count the number of tracks in the project (proj=0 for active project)

Create a new MIDI media item, containing no MIDI events. Time is in seconds unless qn is set.

Create an audio accessor object for this take. Must only call from the main thread. See CreateTrackAudioAccessor, DestroyAudioAccessor, AudioAccessorStateChanged, GetAudioAccessorStartTime, GetAudioAccessorEndTime, GetAudioAccessorSamples.

Create an audio accessor object for this track. Must only call from the main thread. See CreateTakeAudioAccessor, DestroyAudioAccessor, AudioAccessorStateChanged, GetAudioAccessorStartTime, GetAudioAccessorEndTime, GetAudioAccessorSamples.

Create a send/receive (desttrInOptional!=NULL), or a hardware output (desttrInOptional==NULL) with default properties, return >=0 on success (== new send/receive index). See RemoveTrackSend, GetSetTrackSendInfo, GetTrackSendInfo_Value, SetTrackSendInfo_Value.

call this to force flushing of the undo states after using CSurf_On*Change()

Delete the specific shortcut for the given command ID.
See CountActionShortcuts, GetActionShortcutDesc, DoActionShortcutDialog.

Delete an envelope point. If setting multiple points at once, set noSort=true, and call Envelope_SortPoints when done.
autoitem_idx=-1 for the underlying envelope, 0 for the first automation item on the envelope, etc.
For automation items, pass autoitem_idx|0x10000000 to base ptidx on the number of points in one full loop iteration,
even if the automation item is trimmed so that not all points are visible.
Otherwise, ptidx will be based on the number of visible points in the automation item, including all loop iterations.
See CountEnvelopePointsEx, GetEnvelopePointEx, SetEnvelopePointEx, InsertEnvelopePointEx.

Delete a range of envelope points. See DeleteEnvelopePointRangeEx, DeleteEnvelopePointEx.

Delete a range of envelope points. autoitem_idx=-1 for the underlying envelope, 0 for the first automation item on the envelope, etc.

Delete the extended state value for a specific section and key. persist=true means the value should remain deleted the next time REAPER is opened. See SetExtState, GetExtState, HasExtState.

Delete a marker. proj==NULL for the active project.

Differs from DeleteProjectMarker only in that markrgnidx is 0 for the first marker/region, 1 for the next, etc (see EnumProjectMarkers3), rather than representing the displayed marker/region ID number (see SetProjectMarker4).

Delete a take marker. Note that idx will change for all following take markers. See GetNumTakeMarkers, GetTakeMarker, SetTakeMarker

Deletes one or more stretch markers. Returns number of stretch markers deleted.

Delete a tempo/time signature marker.

deletes a track

Destroy an audio accessor. Must only call from the main thread. See CreateTakeAudioAccessor, CreateTrackAudioAccessor, AudioAccessorStateChanged, GetAudioAccessorStartTime, GetAudioAccessorEndTime, GetAudioAccessorSamples.

Open the action shortcut dialog to edit or add a shortcut for the given command ID. If (shortcutidx >= 0 && shortcutidx < CountActionShortcuts()), that specific shortcut will be replaced, otherwise a new shortcut will be added.
See CountActionShortcuts, GetActionShortcutDesc, DeleteActionShortcut.

updates preference for docker window ident_str to be in dock whichDock on next open

-1=not found, 0=bottom, 1=left, 2=top, 3=right, 4=floating

returns dock index that contains hwnd, or -1

Open the tempo/time signature marker editor dialog.

call with a saved window rect for your window and it'll correct any positioning info.

List the files in the "path" directory. Returns NULL/nil when all files have been listed. Use fileindex = -1 to force re-read of directory (invalidate cache). See EnumerateSubdirectories

List the subdirectories in the "path" directory. Use subdirindex = -1 to force re-read of directory (invalidate cache). Returns NULL/nil when all subdirectories have been listed. See EnumerateFiles

Start querying modes at 0, returns FALSE when no more modes possible, sets strOut to NULL if a mode is currently unsupported

Returns submode name, or NULL

idx=-1 for current project,projfn can be NULL if not interested in filename. use idx 0x40000000 for currently rendering project, if any.

Enumerate the data stored with the project for a specific extname. Returns false when there is no more data. See SetProjExtState, GetProjExtState.

Enumerate which tracks will be rendered within this region when using the region render matrix. When called with rendertrack==0, the function returns the first track that will be rendered (which may be the master track); rendertrack==1 will return the next track rendered, and so on. The function returns NULL when there are no more tracks that will be rendered within this region.

returns false if there are no plugins on the track that support MIDI programs,or if all programs have been enumerated

returns false if there are no plugins on the track that support MIDI programs,or if all programs have been enumerated

Get the effective envelope value at a given time position. samplesRequested is how long the caller expects until the next call to Envelope_Evaluate (often, the buffer block size). The return value is how many samples beyond that time position that the returned values are valid. dVdS is the change in value per sample (first derivative), ddVdS is the second derivative, dddVdS is the third derivative. See GetEnvelopeScalingMode.

Formats the value of an envelope to a user-readable form

If take envelope, gets the take from the envelope. If FX, indexOut set to FX index, index2Out set to parameter index, otherwise -1.

If track envelope, gets the track from the envelope. If FX, indexOut set to FX index, index2Out set to parameter index, otherwise -1.

Sort envelope points by time. See SetEnvelopePoint, InsertEnvelopePoint.

Sort envelope points by time. autoitem_idx=-1 for the underlying envelope, 0 for the first automation item on the envelope, etc. See SetEnvelopePoint, InsertEnvelopePoint.

Executes command line, returns NULL on total failure, otherwise the return value, a newline, and then the output of the command. If timeoutmsec is 0, command will be allowed to run indefinitely (recommended for large amounts of returned output). timeoutmsec is -1 for no wait/terminate, -2 for no wait and minimize

returns true if path points to a valid, readable file

Find the tempo/time signature marker that falls at or before this time position (the marker that is in effect as of this time position).

Format tpos (which is time in seconds) as hh:mm:ss.sss. See format_timestr_pos, format_timestr_len.

time formatting mode overrides: -1=proj default.
0=time
1=measures.beats + time
2=measures.beats
3=seconds
4=samples
5=h:m:s:f
offset is start of where the length will be calculated from

time formatting mode overrides: -1=proj default.
0=time
1=measures.beats + time
2=measures.beats
3=seconds
4=samples
5=h:m:s:f

gets ini configuration variable value as string

Get reaper.ini full filename.

Get the text description of a specific shortcut for the given command ID.
See CountActionShortcuts,DeleteActionShortcut,DoActionShortcutDialog.

get the active take in this item

returns the bitwise OR of all project play states (1=playing, 2=pause, 4=recording)

Returns app version which may include an OS/arch signifier, such as: "6.17" (windows 32-bit), "6.17/x64" (windows 64-bit), "6.17/OSX64" (macOS 64-bit Intel), "6.17/OSX" (macOS 32-bit), "6.17/macOS-arm64", "6.17/linux-x86_64", "6.17/linux-i686", "6.17/linux-aarch64", "6.17/linux-armv7l", etc

gets the currently armed command and section name (returns 0 if nothing armed). section name is empty-string for main section.

Get the end time of the audio that can be returned from this accessor. See CreateTakeAudioAccessor, CreateTrackAudioAccessor, DestroyAudioAccessor, AudioAccessorStateChanged, GetAudioAccessorStartTime, GetAudioAccessorSamples.

Deprecated. See AudioAccessorStateChanged instead.

Get a block of samples from the audio accessor. Samples are extracted immediately pre-FX, and returned interleaved (first sample of first channel, first sample of second channel...). Returns 0 if no audio, 1 if audio, -1 on error. See CreateTakeAudioAccessor, CreateTrackAudioAccessor, DestroyAudioAccessor, AudioAccessorStateChanged, GetAudioAccessorStartTime, GetAudioAccessorEndTime.

This function has special handling in Python, and only returns two objects, the API function return value, and the sample buffer. Example usage:

RPR_GetTrack(0, 0)
aa = RPR_CreateTrackAudioAccessor(tr)
buf = list([0]*2*1024) # 2 channels, 1024 samples each, initialized to zero
pos = 0.0
(ret, buf) = GetAudioAccessorSamples(aa, 44100, 2, pos, 1024, buf)
# buf now holds the first 2*1024 audio samples from the track.
# typically GetAudioAccessorSamples() would be called within a loop, increasing pos each time.


Get the start time of the audio that can be returned from this accessor. See CreateTakeAudioAccessor, CreateTrackAudioAccessor, DestroyAudioAccessor, AudioAccessorStateChanged, GetAudioAccessorEndTime, GetAudioAccessorSamples.

get information about the currently open audio device. attribute can be MODE, IDENT_IN, IDENT_OUT, BSIZE, SRATE, BPS. returns false if unknown attribute or device not open.

gets the dock ID desired by ident_str, if any

returns current project if in load/save (usually only used from project_config_extension_t)

return the current cursor context: 0 if track panels, 1 if items, 2 if envelopes, otherwise unknown

0 if track panels, 1 if items, 2 if envelopes, otherwise unknown (unlikely when want_last_valid is true)

edit cursor position

edit cursor position

see GetDisplayedMediaItemColor2.

Returns the custom take, item, or track color that is used (according to the user preference) to color the media item. The returned color is OS dependent|0x01000000 (i.e. ColorToNative(r,g,b)|0x01000000), so a return of zero means "no color", not black.

Gets an envelope numerical-value attribute:
I_TCPY : int : Y offset of envelope relative to parent track (may be separate lane or overlap with track contents)
I_TCPH : int : visible height of envelope
I_TCPY_USED : int : Y offset of envelope relative to parent track, exclusive of padding
I_TCPH_USED : int : visible height of envelope, exclusive of padding
P_TRACK : MediaTrack * : parent track pointer (if any)
P_DESTTRACK : MediaTrack * : destination track pointer, if on a send
P_ITEM : MediaItem * : parent item pointer (if any)
P_TAKE : MediaItem_Take * : parent take pointer (if any)
I_SEND_IDX : int : 1-based index of send in P_TRACK, or 0 if not a send
I_HWOUT_IDX : int : 1-based index of hardware output in P_TRACK or 0 if not a hardware output
I_RECV_IDX : int : 1-based index of receive in P_DESTTRACK or 0 if not a send/receive

Get the attributes of an envelope point. See GetEnvelopePointEx.

Returns the envelope point at or immediately prior to the given time position. See GetEnvelopePointByTimeEx.

Returns the envelope point at or immediately prior to the given time position.
autoitem_idx=-1 for the underlying envelope, 0 for the first automation item on the envelope, etc.
For automation items, pass autoitem_idx|0x10000000 to base ptidx on the number of points in one full loop iteration,
even if the automation item is trimmed so that not all points are visible.
Otherwise, ptidx will be based on the number of visible points in the automation item, including all loop iterations.
See GetEnvelopePointEx, SetEnvelopePointEx, InsertEnvelopePointEx, DeleteEnvelopePointEx.

Get the attributes of an envelope point.
autoitem_idx=-1 for the underlying envelope, 0 for the first automation item on the envelope, etc.
For automation items, pass autoitem_idx|0x10000000 to base ptidx on the number of points in one full loop iteration,
even if the automation item is trimmed so that not all points are visible.
Otherwise, ptidx will be based on the number of visible points in the automation item, including all loop iterations.
See CountEnvelopePointsEx, SetEnvelopePointEx, InsertEnvelopePointEx, DeleteEnvelopePointEx.

Returns the envelope scaling mode: 0=no scaling, 1=fader scaling. All API functions deal with raw envelope point values, to convert raw from/to scaled values see ScaleFromEnvelopeMode, ScaleToEnvelopeMode.

Gets the RPPXML state of an envelope, returns true if successful. Undo flag is a performance/caching hint.

gets information on the UI state of an envelope: returns &1 if automation/modulation is playing back, &2 if automation is being actively written, &4 if the envelope recently had an effective automation mode change

returns path of REAPER.exe (not including EXE), i.e. C:\Program Files\REAPER

Get the extended state value for a specific section and key. See SetExtState, DeleteExtState, HasExtState.

This function is deprecated (returns GetFocusedFX2()&3), see GetFocusedFX2.

Return value has 1 set if track FX, 2 if take/item FX, 4 set if FX is no longer focused but still open. tracknumber==0 means the master track, 1 means track 1, etc. itemnumber is zero-based (or -1 if not an item). For interpretation of fxnumber, see GetLastTouchedFX.

returns free disk space in megabytes, pathIdx 0 for normal, 1 for alternate.

Returns the FX parameter envelope. If the envelope does not exist and create=true, the envelope will be created.

return -1=no override, 0=trim/read, 1=read, 2=touch, 3=write, 4=latch, 5=bypass

returns pixels/second

returns approximate input level if available, 0-511 mono inputs, |1024 for stereo pairs, 4096+devidx*32 for MIDI devices

Gets the audio device input/output latency in samples

returns time of relevant edit, set which_item to the pcm_source (if applicable), flags (if specified) will be set to 1 for edge resizing, 2 for fade change, 4 for item move, 8 for item slip edit (edit cursor time or start of item)

Returns the first item at the screen coordinates specified. If allow_locked is false, locked items are ignored. If takeOutOptional specified, returns the take hit. See GetThingFromPoint.

Gets the RPPXML state of an item, returns true if successful. Undo flag is a performance/caching hint.

Get the last project marker before time, and/or the project region that includes time. markeridx and regionidx are returned not necessarily as the displayed marker/region index, but as the index that can be passed to EnumProjectMarkers. Either or both of markeridx and regionidx may be NULL. See EnumProjectMarkers.

Returns true if the last touched FX parameter is valid, false otherwise. The low word of tracknumber is the 1-based track index -- 0 means the master track, 1 means track 1, etc. If the high word of tracknumber is nonzero, it refers to the 1-based item index (1 is the first item on the track, etc). For track FX, the low 24 bits of fxnumber refer to the FX index in the chain, and if the next 8 bits are 01, then the FX is record FX. For item FX, the low word defines the FX index in the chain, and the high word defines the take number.

&1=master mute,&2=master solo. This is deprecated as you can just query the master track as well.

returns &1 if the master track is visible in the TCP, &2 if NOT visible in the mixer. See SetMasterTrackVisibility.

returns max dev for midi inputs/outputs

Get text-based metadata from a media file for a given identifier. Call with identifier="" to list all identifiers contained in the file, separated by newlines. May return "[Binary data]" for metadata that REAPER doesn't handle.

get an item from a project by item count (zero-based) (proj=0 for active project)

Get parent track of media item

Get media item numerical-value attributes.
B_MUTE : bool * : muted (item solo overrides). setting this value will clear C_MUTE_SOLO.
B_MUTE_ACTUAL : bool * : muted (ignores solo). setting this value will not affect C_MUTE_SOLO.
C_MUTE_SOLO : char * : solo override (-1=soloed, 0=no override, 1=unsoloed). note that this API does not automatically unsolo other items when soloing (nor clear the unsolos when clearing the last soloed item), it must be done by the caller via action or via this API.
B_LOOPSRC : bool * : loop source
B_ALLTAKESPLAY : bool * : all takes play
B_UISEL : bool * : selected in arrange view
C_BEATATTACHMODE : char * : item timebase, -1=track or project default, 1=beats (position, length, rate), 2=beats (position only). for auto-stretch timebase: C_BEATATTACHMODE=1, C_AUTOSTRETCH=1
C_AUTOSTRETCH: : char * : auto-stretch at project tempo changes, 1=enabled, requires C_BEATATTACHMODE=1
C_LOCK : char * : locked, &1=locked
D_VOL : double * : item volume, 0=-inf, 0.5=-6dB, 1=+0dB, 2=+6dB, etc
D_POSITION : double * : item position in seconds
D_LENGTH : double * : item length in seconds
D_SNAPOFFSET : double * : item snap offset in seconds
D_FADEINLEN : double * : item manual fadein length in seconds
D_FADEOUTLEN : double * : item manual fadeout length in seconds
D_FADEINDIR : double * : item fadein curvature, -1..1
D_FADEOUTDIR : double * : item fadeout curvature, -1..1
D_FADEINLEN_AUTO : double * : item auto-fadein length in seconds, -1=no auto-fadein
D_FADEOUTLEN_AUTO : double * : item auto-fadeout length in seconds, -1=no auto-fadeout
C_FADEINSHAPE : int * : fadein shape, 0..6, 0=linear
C_FADEOUTSHAPE : int * : fadeout shape, 0..6, 0=linear
I_GROUPID : int * : group ID, 0=no group
I_LASTY : int * : Y-position (relative to top of track) in pixels (read-only)
I_LASTH : int * : height in pixels (read-only)
I_CUSTOMCOLOR : int * : custom color, OS dependent color|0x1000000 (i.e. ColorToNative(r,g,b)|0x1000000). If you do not |0x1000000, then it will not be used, but will store the color
I_CURTAKE : int * : active take number
IP_ITEMNUMBER : int : item number on this track (read-only, returns the item number directly)
F_FREEMODE_Y : float * : free item positioning Y-position, 0=top of track, 1=bottom of track (will never be 1)
F_FREEMODE_H : float * : free item positioning height, 0=no height, 1=full height of track (will never be 0)
P_TRACK : MediaTrack * : (read-only)

Get parent item of media item take

Gets block of peak samples to buf. Note that the peak samples are interleaved, but in two or three blocks (maximums, then minimums, then extra). Return value has 20 bits of returned sample count, then 4 bits of output_mode (0xf00000), then a bit to signify whether extra_type was available (0x1000000). extra_type can be 115 ('s') for spectral information, which will return peak samples as integers with the low 15 bits frequency, next 14 bits tonality.

Get media source of media item take

Get parent track of media item take

Get media item take numerical-value attributes.
D_STARTOFFS : double * : start offset in source media, in seconds
D_VOL : double * : take volume, 0=-inf, 0.5=-6dB, 1=+0dB, 2=+6dB, etc, negative if take polarity is flipped
D_PAN : double * : take pan, -1..1
D_PANLAW : double * : take pan law, -1=default, 0.5=-6dB, 1.0=+0dB, etc
D_PLAYRATE : double * : take playback rate, 0.5=half speed, 1=normal, 2=double speed, etc
D_PITCH : double * : take pitch adjustment in semitones, -12=one octave down, 0=normal, +12=one octave up, etc
B_PPITCH : bool * : preserve pitch when changing playback rate
I_LASTY : int * : Y-position (relative to top of track) in pixels (read-only)
I_LASTH : int * : height in pixels (read-only)
I_CHANMODE : int * : channel mode, 0=normal, 1=reverse stereo, 2=downmix, 3=left, 4=right
I_PITCHMODE : int * : pitch shifter mode, -1=projext default, otherwise high 2 bytes=shifter, low 2 bytes=parameter
I_CUSTOMCOLOR : int * : custom color, OS dependent color|0x1000000 (i.e. ColorToNative(r,g,b)|0x1000000). If you do not |0x1000000, then it will not be used, but will store the color
IP_TAKENUMBER : int : take number (read-only, returns the take number directly)
P_TRACK : pointer to MediaTrack (read-only)
P_ITEM : pointer to MediaItem (read-only)
P_SOURCE : PCM_source *. Note that if setting this, you should first retrieve the old source, set the new, THEN delete the old.

Copies the media source filename to filenamebuf. Note that in-project MIDI media sources have no associated filename. See GetMediaSourceParent.

Returns the length of the source media. If the media source is beat-based, the length will be in quarter notes, otherwise it will be in seconds.

Returns the number of channels in the source media.

Returns the parent source, or NULL if src is the root source. This can be used to retrieve the parent properties of sections or reversed sources for example.

Returns the sample rate. MIDI source media will return zero.

copies the media source type ("WAV", "MIDI", etc) to typebuf

Get track numerical-value attributes.
B_MUTE : bool * : muted
B_PHASE : bool * : track phase inverted
B_RECMON_IN_EFFECT : bool * : record monitoring in effect (current audio-thread playback state, read-only)
IP_TRACKNUMBER : int : track number 1-based, 0=not found, -1=master track (read-only, returns the int directly)
I_SOLO : int * : soloed, 0=not soloed, 1=soloed, 2=soloed in place, 5=safe soloed, 6=safe soloed in place
B_SOLO_DEFEAT : bool * : when set, if anything else is soloed and this track is not muted, this track acts soloed
I_FXEN : int * : fx enabled, 0=bypassed, !0=fx active
I_RECARM : int * : record armed, 0=not record armed, 1=record armed
I_RECINPUT : int * : record input, <0=no input. if 4096 set, input is MIDI and low 5 bits represent channel (0=all, 1-16=only chan), next 6 bits represent physical input (63=all, 62=VKB). If 4096 is not set, low 10 bits (0..1023) are input start channel (ReaRoute/Loopback start at 512). If 2048 is set, input is multichannel input (using track channel count), or if 1024 is set, input is stereo input, otherwise input is mono.
I_RECMODE : int * : record mode, 0=input, 1=stereo out, 2=none, 3=stereo out w/latency compensation, 4=midi output, 5=mono out, 6=mono out w/ latency compensation, 7=midi overdub, 8=midi replace
I_RECMODE_FLAGS : int * : record mode flags, &3=output recording mode (0=post fader, 1=pre-fx, 2=post-fx/pre-fader)
I_RECMON : int * : record monitoring, 0=off, 1=normal, 2=not when playing (tape style)
I_RECMONITEMS : int * : monitor items while recording, 0=off, 1=on
B_AUTO_RECARM : bool * : automatically set record arm when selected (does not immediately affect recarm state, script should set directly if desired)
I_VUMODE : int * : track vu mode, &1:disabled, &30==0:stereo peaks, &30==2:multichannel peaks, &30==4:stereo RMS, &30==8:combined RMS, &30==12:LUFS-M, &30==16:LUFS-S (readout=max), &30==20:LUFS-S (readout=current), &32:LUFS calculation on channels 1+2 only
I_AUTOMODE : int * : track automation mode, 0=trim/off, 1=read, 2=touch, 3=write, 4=latch
I_NCHAN : int * : number of track channels, 2-64, even numbers only
I_SELECTED : int * : track selected, 0=unselected, 1=selected
I_WNDH : int * : current TCP window height in pixels including envelopes (read-only)
I_TCPH : int * : current TCP window height in pixels not including envelopes (read-only)
I_TCPY : int * : current TCP window Y-position in pixels relative to top of arrange view (read-only)
I_MCPX : int * : current MCP X-position in pixels relative to mixer container (read-only)
I_MCPY : int * : current MCP Y-position in pixels relative to mixer container (read-only)
I_MCPW : int * : current MCP width in pixels (read-only)
I_MCPH : int * : current MCP height in pixels (read-only)
I_FOLDERDEPTH : int * : folder depth change, 0=normal, 1=track is a folder parent, -1=track is the last in the innermost folder, -2=track is the last in the innermost and next-innermost folders, etc
I_FOLDERCOMPACT : int * : folder compacted state (only valid on folders), 0=normal, 1=small, 2=tiny children
I_MIDIHWOUT : int * : track midi hardware output index, <0=disabled, low 5 bits are which channels (0=all, 1-16), next 5 bits are output device index (0-31)
I_PERFFLAGS : int * : track performance flags, &1=no media buffering, &2=no anticipative FX
I_CUSTOMCOLOR : int * : custom color, OS dependent color|0x1000000 (i.e. ColorToNative(r,g,b)|0x1000000). If you do not |0x1000000, then it will not be used, but will store the color
I_HEIGHTOVERRIDE : int * : custom height override for TCP window, 0 for none, otherwise size in pixels
B_HEIGHTLOCK : bool * : track height lock (must set I_HEIGHTOVERRIDE before locking)
D_VOL : double * : trim volume of track, 0=-inf, 0.5=-6dB, 1=+0dB, 2=+6dB, etc
D_PAN : double * : trim pan of track, -1..1
D_WIDTH : double * : width of track, -1..1
D_DUALPANL : double * : dualpan position 1, -1..1, only if I_PANMODE==6
D_DUALPANR : double * : dualpan position 2, -1..1, only if I_PANMODE==6
I_PANMODE : int * : pan mode, 0=classic 3.x, 3=new balance, 5=stereo pan, 6=dual pan
D_PANLAW : double * : pan law of track, <0=project default, 0.5=-6dB, 0.707..=-3dB, 1=+0dB, 1.414..=-3dB with gain compensation, 2=-6dB with gain compensation, etc
I_PANLAW_FLAGS : int * : pan law flags, 0=sine taper, 1=hybrid taper with deprecated behavior when gain compensation enabled, 2=linear taper, 3=hybrid taper
P_ENV:<envchunkname or P_ENV:{GUID... : TrackEnvelope * : (read-only) chunkname can be <VOLENV, <PANENV, etc; GUID is the stringified envelope GUID.
B_SHOWINMIXER : bool * : track control panel visible in mixer (do not use on master track)
B_SHOWINTCP : bool * : track control panel visible in arrange view (do not use on master track)
B_MAINSEND : bool * : track sends audio to parent
C_MAINSEND_OFFS : char * : channel offset of track send to parent
C_MAINSEND_NCH : char * : channel count of track send to parent (0=use all child track channels, 1=use one channel only)
I_FREEMODE : int * : 1=track free item positioning enabled, 2=track fixed lanes enabled (call UpdateTimeline() after changing)
C_BEATATTACHMODE : char * : track timebase, -1=project default, 0=time, 1=beats (position, length, rate), 2=beats (position only)
F_MCP_FXSEND_SCALE : float * : scale of fx+send area in MCP (0=minimum allowed, 1=maximum allowed)
F_MCP_FXPARM_SCALE : float * : scale of fx parameter area in MCP (0=minimum allowed, 1=maximum allowed)
F_MCP_SENDRGN_SCALE : float * : scale of send area as proportion of the fx+send total area (0=minimum allowed, 1=maximum allowed)
F_TCP_FXPARM_SCALE : float * : scale of TCP parameter area when TCP FX are embedded (0=min allowed, default, 1=max allowed)
I_PLAY_OFFSET_FLAG : int * : track media playback offset state, &1=bypassed, &2=offset value is measured in samples (otherwise measured in seconds)
D_PLAY_OFFSET : double * : track media playback offset, units depend on I_PLAY_OFFSET_FLAG
P_PARTRACK : MediaTrack * : parent track (read-only)
P_PROJECT : ReaProject * : parent project (read-only)

returns true if device present

returns true if device present

Get the leftmost track visible in the mixer

Get the current mouse modifier assignment for a specific modifier key assignment, in a specific context.
action will be filled in with the command ID number for a built-in mouse modifier
or built-in REAPER command ID, or the custom action ID string.
Note: the action string may have a space and 'c' or 'm' appended to it to specify command ID vs mouse modifier ID.
See SetMouseModifier for more information.

get mouse position in screen coordinates

Return number of normal audio hardware inputs available

Return number of normal audio hardware outputs available

returns max number of real midi hardware inputs

returns max number of real midi hardware outputs

Returns number of take markers. See GetTakeMarker, SetTakeMarker, DeleteTakeMarker

Returns "Win32", "Win64", "OSX32", "OSX64", "macOS-arm64", or "Other".

returns output latency in seconds

get the peak file name for a given file (can be either filename.reapeaks,or a hashed filename in another path)

get the peak file name for a given file (can be either filename.reapeaks,or a hashed filename in another path)

Like GetPeakFileNameEx, but you can specify peaksfileextension such as ".reapeaks"

returns latency-compensated actual-what-you-hear position

returns position of next audio block being processed

returns position of next audio block being processed

returns latency-compensated actual-what-you-hear position

&1=playing, &2=paused, &4=is recording

&1=playing, &2=paused, &4=is recording

returns length of project (maximum of end of media item, markers, end of regions, tempo map

Get the project recording path.

Get the project recording path.

returns an integer that changes when the project state changes

Gets project time offset in seconds (project settings - project start time). If rndframe is true, the offset is rounded to a multiple of the project frame size.

deprecated

Gets basic time signature (beats per minute, numerator of time signature in bpi)
this does not reflect tempo envelopes but is purely what is set in the project settings.

Get the value previously associated with this extname and key, the last time the project was saved. See SetProjExtState, EnumProjExtState.

returns path where ini files are stored, other things are in subdirectories.

get the currently selected envelope, returns NULL/nil if no envelope is selected

get a selected item by selected item count (zero-based) (proj=0 for active project)

Get a selected track from a project (proj=0 for active project) by selected track count (zero-based). This function ignores the master track, see GetSelectedTrack2.

Get a selected track from a project (proj=0 for active project) by selected track count (zero-based).

get the currently selected track envelope, returns NULL/nil if no envelope is selected

Gets or sets the arrange view start/end time for screen coordinates. use screen_x_start=screen_x_end=0 to use the full arrange view's start/end time

Get or set automation item information. autoitem_idx=0 for the first automation item on an envelope, 1 for the second item, etc. desc can be any of the following:
D_POOL_ID : double * : automation item pool ID (as an integer); edits are propagated to all other automation items that share a pool ID
D_POSITION : double * : automation item timeline position in seconds
D_LENGTH : double * : automation item length in seconds
D_STARTOFFS : double * : automation item start offset in seconds
D_PLAYRATE : double * : automation item playback rate
D_BASELINE : double * : automation item baseline value in the range [0,1]
D_AMPLITUDE : double * : automation item amplitude in the range [-1,1]
D_LOOPSRC : double * : nonzero if the automation item contents are looped
D_UISEL : double * : nonzero if the automation item is selected in the arrange view
D_POOL_QNLEN : double * : automation item pooled source length in quarter notes (setting will affect all pooled instances)

Get or set automation item information. autoitem_idx=0 for the first automation item on an envelope, 1 for the second item, etc. returns true on success. desc can be any of the following:
P_POOL_NAME : char * : name of the underlying automation item pool
P_POOL_EXT:xyz : char * : extension-specific persistent data

Gets/sets an attribute string:
P_EXT:xyz : char * : extension-specific persistent data
GUID : GUID * : 16-byte GUID, can query only, not set. If using a _String() function, GUID is a string {xyz-...}.

deprecated -- see SetEnvelopeStateChunk, GetEnvelopeStateChunk

deprecated -- see SetEnvelopeStateChunk, GetEnvelopeStateChunk

deprecated -- see SetItemStateChunk, GetItemStateChunk

deprecated -- see SetItemStateChunk, GetItemStateChunk

Gets/sets an item attribute string:
P_NOTES : char * : item note text (do not write to returned pointer, use setNewValue to update)
P_EXT:xyz : char * : extension-specific persistent data
GUID : GUID * : 16-byte GUID, can query or update. If using a _String() function, GUID is a string {xyz-...}.

Gets/sets a take attribute string:
P_NAME : char * : take name
P_EXT:xyz : char * : extension-specific persistent data
GUID : GUID * : 16-byte GUID, can query or update. If using a _String() function, GUID is a string {xyz-...}.

Get or set track string attributes.
P_NAME : char * : track name (on master returns NULL)
P_ICON : const char * : track icon (full filename, or relative to resource_path/data/track_icons)
P_MCP_LAYOUT : const char * : layout name
P_RAZOREDITS : const char * : list of razor edit areas, as space-separated triples of start time, end time, and envelope GUID string.
Example: "0.0 1.0 \"\" 0.0 1.0 "{xyz-...}"
P_RAZOREDITS_EXT : const char * : list of razor edit areas, as comma-separated sets of space-separated tuples of start time, end time, optional envelope GUID string, optional fixed/fipm top y-position, optional fixed/fipm bottom y-position.
Example: "0.0 1.0,0.0 1.0 "{xyz-...}",1.0 2.0 "" 0.25 0.5"
P_TCP_LAYOUT : const char * : layout name
P_EXT:xyz : char * : extension-specific persistent data
P_UI_RECT:tcp.mute : char * : read-only, allows querying screen position + size of track WALTER elements (tcp.size queries screen position and size of entire TCP, etc).
GUID : GUID * : 16-byte GUID, can query or update. If using a _String() function, GUID is a string {xyz-...}.

deprecated, see GetSetProjectInfo_String with desc="PROJECT_AUTHOR"

Get or set the arrange view grid division. 0.25=quarter note, 1.0/3.0=half note triplet, etc. swingmode can be 1 for swing enabled, swingamt is -1..1. swingmode can be 3 for measure-grid. Returns grid configuration flags

Get or set project information.
RENDER_SETTINGS : &(1|2)=0:master mix, &1=stems+master mix, &2=stems only, &4=multichannel tracks to multichannel files, &8=use render matrix, &16=tracks with only mono media to mono files, &32=selected media items, &64=selected media items via master, &128=selected tracks via master, &256=embed transients if format supports, &512=embed metadata if format supports, &1024=embed take markers if format supports, &2048=2nd pass render
RENDER_BOUNDSFLAG : 0=custom time bounds, 1=entire project, 2=time selection, 3=all project regions, 4=selected media items, 5=selected project regions, 6=all project markers, 7=selected project markers
RENDER_CHANNELS : number of channels in rendered file
RENDER_SRATE : sample rate of rendered file (or 0 for project sample rate)
RENDER_STARTPOS : render start time when RENDER_BOUNDSFLAG=0
RENDER_ENDPOS : render end time when RENDER_BOUNDSFLAG=0
RENDER_TAILFLAG : apply render tail setting when rendering: &1=custom time bounds, &2=entire project, &4=time selection, &8=all project markers/regions, &16=selected media items, &32=selected project markers/regions
RENDER_TAILMS : tail length in ms to render (only used if RENDER_BOUNDSFLAG and RENDER_TAILFLAG are set)
RENDER_ADDTOPROJ : &1=add rendered files to project, &2=do not render files that are likely silent
RENDER_DITHER : &1=dither, &2=noise shaping, &4=dither stems, &8=noise shaping on stems
RENDER_NORMALIZE: &1=enable, (&14==0)=LUFS-I, (&14==2)=RMS, (&14==4)=peak, (&14==6)=true peak, (&14==8)=LUFS-M max, (&14==10)=LUFS-S max, &32=normalize stems to common gain based on master, &64=enable brickwall limit, &128=brickwall limit true peak, &256=only normalize files that are too loud, &512=apply fade-in, &1024=apply fade-out
RENDER_NORMALIZE_TARGET: render normalization target as amplitude, so 0.5 means -6.02dB, 0.25 means -12.04dB, etc
RENDER_BRICKWALL: render brickwall limit as amplitude, so 0.5 means -6.02dB, 0.25 means -12.04dB, etc
RENDER_FADEIN: render fade-in (0.001 means 1 ms, requires RENDER_NORMALIZE&512)
RENDER_FADEOUT: render fade-out (0.001 means 1 ms, requires RENDER_NORMALIZE&1024)
RENDER_FADEINSHAPE: render fade-in shape
RENDER_FADEOUTSHAPE: render fade-out shape
PROJECT_SRATE : samplerate (ignored unless PROJECT_SRATE_USE set)
PROJECT_SRATE_USE : set to 1 if project samplerate is used

Get or set project information.
PROJECT_NAME : project file name (read-only, is_set will be ignored)
PROJECT_TITLE : title field from Project Settings/Notes dialog
PROJECT_AUTHOR : author field from Project Settings/Notes dialog
TRACK_GROUP_NAME:X : track group name, X should be 1..64
MARKER_GUID:X : get the GUID (unique ID) of the marker or region with index X, where X is the index passed to EnumProjectMarkers, not necessarily the displayed number (read-only)
MARKER_INDEX_FROM_GUID:{GUID} : get the GUID index of the marker or region with GUID {GUID} (read-only)
OPENCOPY_CFGIDX : integer for the configuration of format to use when creating copies/applying FX. 0=wave (auto-depth), 1=APPLYFX_FORMAT, 2=RECORD_FORMAT
RECORD_PATH : recording directory -- may be blank or a relative path, to get the effective path see GetProjectPathEx()
RECORD_PATH_SECONDARY : secondary recording directory
RECORD_FORMAT : base64-encoded sink configuration (see project files, etc). Callers can also pass a simple 4-byte string (non-base64-encoded), e.g. "evaw" or "l3pm", to use default settings for that sink type.
APPLYFX_FORMAT : base64-encoded sink configuration (see project files, etc). Used only if RECFMT_OPENCOPY is set to 1. Callers can also pass a simple 4-byte string (non-base64-encoded), e.g. "evaw" or "l3pm", to use default settings for that sink type.
RENDER_FILE : render directory
RENDER_PATTERN : render file name (may contain wildcards)
RENDER_METADATA : get or set the metadata saved with the project (not metadata embedded in project media). Example, ID3 album name metadata: valuestr="ID3:TALB" to get, valuestr="ID3:TALB|my album name" to set. Call with valuestr="" and is_set=false to get a semicolon-separated list of defined project metadata identifiers.
RENDER_TARGETS : semicolon separated list of files that would be written if the project is rendered using the most recent render settings
RENDER_STATS : (read-only) semicolon separated list of statistics for the most recently rendered files. call with valuestr="XXX" to run an action (for example, "42437"=dry run render selected items) before returning statistics.
RENDER_FORMAT : base64-encoded sink configuration (see project files, etc). Callers can also pass a simple 4-byte string (non-base64-encoded), e.g. "evaw" or "l3pm", to use default settings for that sink type.
RENDER_FORMAT2 : base64-encoded secondary sink configuration. Callers can also pass a simple 4-byte string (non-base64-encoded), e.g. "evaw" or "l3pm", to use default settings for that sink type, or "" to disable secondary render.
    Formats available on this machine:
    "wave" "aiff" "caff" "iso " "ddp " "flac" "mp3l" "oggv" "OggS" "FFMP" "WMF " "GIF " "LCF " "wvpk"

gets or sets project notes, notesNeedBig_sz is ignored when setting

-1 == query,0=clear,1=set,>1=toggle . returns new value

-1 == query,0=clear,1=set,>1=toggle . returns new value

Gets or modifies the group membership for a track. Returns group state prior to call (each bit represents one of the 32 group numbers). if setmask has bits set, those bits in setvalue will be applied to group. Group can be one of:
MEDIA_EDIT_LEAD
MEDIA_EDIT_FOLLOW
VOLUME_LEAD
VOLUME_FOLLOW
VOLUME_VCA_LEAD
VOLUME_VCA_FOLLOW
PAN_LEAD
PAN_FOLLOW
WIDTH_LEAD
WIDTH_FOLLOW
MUTE_LEAD
MUTE_FOLLOW
SOLO_LEAD
SOLO_FOLLOW
RECARM_LEAD
RECARM_FOLLOW
POLARITY_LEAD
POLARITY_FOLLOW
AUTOMODE_LEAD
AUTOMODE_FOLLOW
VOLUME_REVERSE
PAN_REVERSE
WIDTH_REVERSE
NO_LEAD_WHEN_FOLLOW
VOLUME_VCA_FOLLOW_ISPREFX

Note: REAPER v6.11 and earlier used _MASTER and _SLAVE rather than _LEAD and _FOLLOW, which is deprecated but still supported (scripts that must support v6.11 and earlier can use the deprecated strings).

Gets or modifies the group membership for a track. Returns group state prior to call (each bit represents one of the high 32 group numbers). if setmask has bits set, those bits in setvalue will be applied to group. Group can be one of:
MEDIA_EDIT_LEAD
MEDIA_EDIT_FOLLOW
VOLUME_LEAD
VOLUME_FOLLOW
VOLUME_VCA_LEAD
VOLUME_VCA_FOLLOW
PAN_LEAD
PAN_FOLLOW
WIDTH_LEAD
WIDTH_FOLLOW
MUTE_LEAD
MUTE_FOLLOW
SOLO_LEAD
SOLO_FOLLOW
RECARM_LEAD
RECARM_FOLLOW
POLARITY_LEAD
POLARITY_FOLLOW
AUTOMODE_LEAD
AUTOMODE_FOLLOW
VOLUME_REVERSE
PAN_REVERSE
WIDTH_REVERSE
NO_LEAD_WHEN_FOLLOW
VOLUME_VCA_FOLLOW_ISPREFX

Note: REAPER v6.11 and earlier used _MASTER and _SLAVE rather than _LEAD and _FOLLOW, which is deprecated but still supported (scripts that must support v6.11 and earlier can use the deprecated strings).

Gets/sets a send attribute string:
P_EXT:xyz : char * : extension-specific persistent data

deprecated -- see SetTrackStateChunk, GetTrackStateChunk

deprecated -- see SetTrackStateChunk, GetTrackStateChunk

get a take from an item by take count (zero-based)

Get information about a take marker. Returns the position in media item source time, or -1 if the take marker does not exist. See GetNumTakeMarkers, SetTakeMarker, DeleteTakeMarker

returns NULL if the take is not valid

Returns number of stretch markers in take

Gets information on a stretch marker, idx is 0..n. Returns -1 if stretch marker not valid. posOut will be set to position in item, srcposOutOptional will be set to source media position. Returns index. if input index is -1, the following marker is found using position (or source position if position is -1). If position/source position are used to find marker position, their values are not updated.

See SetTakeStretchMarkerSlope

Get information about a specific FX parameter knob (see CountTCPFXParms).

finds the playrate and target length to insert this item stretched to a round power-of-2 number of bars, between 1/8 and 256

Get information about a tempo/time signature marker. See CountTempoTimeSigMarkers, SetTempoTimeSigMarker, AddTempoTimeSigMarker.

Returns the theme color specified, or -1 on failure. If the low bit of flags is set, the color as originally specified by the theme (before any transformations) is returned, otherwise the current (possibly transformed and modified) color is returned. See SetThemeColor for a list of valid ini_key.

Hit tests a point in screen coordinates. Updates infoOut with information such as "arrange", "fx_chain", "fx_0" (first FX in chain, floating). If a track panel is hit, string will begin with "tcp" or "mcp" or "tcp.mute" etc (future versions may append additional information). May return NULL with valid info string to indicate non-track thing.

See GetToggleCommandStateEx.

For the main action context, the MIDI editor, or the media explorer, returns the toggle state of the action. 0=off, 1=on, -1=NA because the action does not have on/off states. For the MIDI editor, the action state for the most recently focused window will be returned.

gets a tooltip window,in case you want to ask it for font information. Can return NULL.

get a track from a project by track count (zero-based) (proj=0 for active project)

return the track mode, regardless of global override

Returns the track custom color as OS dependent color|0x1000000 (i.e. ColorToNative(r,g,b)|0x1000000). Black is returned as 0x1000000, no color setting is returned as 0.

Gets a built-in track envelope by configuration chunk name, like "<VOLENV", or GUID string, like "{B577250D-146F-B544-9B34-F24FBE488F1F}".

Returns the track from the screen coordinates specified. If the screen coordinates refer to a window associated to the track (such as FX), the track will be returned. infoOutOptional will be set to 1 if it is likely an envelope, 2 if it is likely a track FX. See GetThingFromPoint.

Get all MIDI lyrics on the track. Lyrics will be returned as one string with tabs between each word. flag&1: double tabs at the end of each measure and triple tabs when skipping measures, flag&2: each lyric is preceded by its beat position in the project (example with flag=2: "1.1.2\tLyric for measure 1 beat 2\t2.1.1\tLyric for measure 2 beat 1 "). See SetTrackMIDILyrics

see GetTrackMIDINoteNameEx

Get note/CC name. pitch 128 for CC0 name, 129 for CC1 name, etc. See SetTrackMIDINoteNameEx

Returns "MASTER" for master track, "Track N" if track has no name.

returns number of sends/receives/hardware outputs - category is <0 for receives, 0=sends, >0 for hardware outputs

See GetTrackSendName.

See GetTrackSendUIMute.

See GetTrackSendUIVolPan.

Get send/receive/hardware output numerical-value attributes.
category is <0 for receives, 0=sends, >0 for hardware outputs
parameter names:
B_MUTE : bool *
B_PHASE : bool * : true to flip phase
B_MONO : bool *
D_VOL : double * : 1.0 = +0dB etc
D_PAN : double * : -1..+1
D_PANLAW : double * : 1.0=+0.0db, 0.5=-6dB, -1.0 = projdef etc
I_SENDMODE : int * : 0=post-fader, 1=pre-fx, 2=post-fx (deprecated), 3=post-fx
I_AUTOMODE : int * : automation mode (-1=use track automode, 0=trim/off, 1=read, 2=touch, 3=write, 4=latch)
I_SRCCHAN : int * : -1 for no audio send. Low 10 bits specify channel offset, and higher bits specify channel count. (srcchan>>10) == 0 for stereo, 1 for mono, 2 for 4 channel, 3 for 6 channel, etc.
I_DSTCHAN : int * : low 10 bits are destination index, &1024 set to mix to mono.
I_MIDIFLAGS : int * : low 5 bits=source channel 0=all, 1-16, next 5 bits=dest channel, 0=orig, 1-16=chan
P_DESTTRACK : MediaTrack * : destination track, only applies for sends/recvs (read-only)
P_SRCTRACK : MediaTrack * : source track, only applies for sends/recvs (read-only)
P_ENV:<envchunkname : TrackEnvelope * : call with :<VOLENV, :<PANENV, etc appended (read-only)
See CreateTrackSend, RemoveTrackSend, GetTrackNumSends.

send_idx>=0 for hw ouputs, >=nb_of_hw_ouputs for sends. See GetTrackReceiveName.

send_idx>=0 for hw ouputs, >=nb_of_hw_ouputs for sends. See GetTrackReceiveUIMute.

send_idx>=0 for hw ouputs, >=nb_of_hw_ouputs for sends. See GetTrackReceiveUIVolPan.

Gets track state, returns track name.
flags will be set to:
&1=folder
&2=selected
&4=has fx enabled
&8=muted
&16=soloed
&32=SIP'd (with &16)
&64=rec armed
&128=rec monitoring on
&256=rec monitoring auto
&512=hide from TCP
&1024=hide from MCP

Gets the RPPXML state of a track, returns true if successful. Undo flag is a performance/caching hint.

retrieves the last timestamps of audio xrun (yellow-flash, if available), media xrun (red-flash), and the current time stamp (all milliseconds)

returns true if the user selected a valid file, false if the user canceled the dialog

Get values from the user.
If a caption begins with *, for example "*password", the edit field will not display the input text.
Maximum fields is 16. Values are returned as a comma-separated string. Returns false if the user canceled the dialog. You can supply special extra information via additional caption fields: extrawidth=XXX to increase text field width, separator=X to use a different separator for returned fields.

Go to marker. If use_timeline_order==true, marker_index 1 refers to the first marker on the timeline. If use_timeline_order==false, marker_index 1 refers to the first marker with the user-editable index of 1.

Seek to region after current region finishes playing (smooth seek). If use_timeline_order==true, region_index 1 refers to the first region on the timeline. If use_timeline_order==false, region_index 1 refers to the first region with the user-editable index of 1.

Runs the system color chooser dialog. Returns 0 if the user cancels the dialog.

this is just like win32 GetSysColor() but can have overrides.

dest should be at least 64 chars long to be safe

Returns true if there exists an extended state value for a specific section and key. See SetExtState, GetExtState, DeleteExtState.

returns name of track plugin that is supplying MIDI programs,or NULL if there is none

returns name of track plugin that is supplying MIDI programs,or NULL if there is none

Insert a new automation item. pool_id < 0 collects existing envelope points into the automation item; if pool_id is >= 0 the automation item will be a new instance of that pool (which will be created as an empty instance if it does not exist). Returns the index of the item, suitable for passing to other automation item API functions. See GetSetAutomationItemInfo.

Insert an envelope point. If setting multiple points at once, set noSort=true, and call Envelope_SortPoints when done. See InsertEnvelopePointEx.

Insert an envelope point. If setting multiple points at once, set noSort=true, and call Envelope_SortPoints when done.
autoitem_idx=-1 for the underlying envelope, 0 for the first automation item on the envelope, etc.
For automation items, pass autoitem_idx|0x10000000 to base ptidx on the number of points in one full loop iteration,
even if the automation item is trimmed so that not all points are visible.
Otherwise, ptidx will be based on the number of visible points in the automation item, including all loop iterations.
See CountEnvelopePointsEx, GetEnvelopePointEx, SetEnvelopePointEx, DeleteEnvelopePointEx.

mode: 0=add to current track, 1=add new track, 3=add to selected items as takes, &4=stretch/loop to fit time sel, &8=try to match tempo 1x, &16=try to match tempo 0.5x, &32=try to match tempo 2x, &64=don't preserve pitch when matching tempo, &128=no loop/section if startpct/endpct set, &256=force loop regardless of global preference for looping imported items, &512=use high word as absolute track index if mode&3==0 or mode&2048, &1024=insert into reasamplomatic on a new track (add 1 to insert on last selected track), &2048=insert into open reasamplomatic instance (add 512 to use high word as absolute track index), &4096=move to source preferred position (BWF start offset), &8192=reverse

See InsertMedia.

inserts a track at idx,of course this will be clamped to 0..GetNumTracks(). wantDefaults=TRUE for default envelopes/FX,otherwise no enabled fx/env

Tests a file extension (i.e. "wav" or "mid") to see if it's a media extension.
If wantOthers is set, then "RPP", "TXT" and other project-type formats will also pass.

Is the project dirty (needing save)? Always returns 0 if 'undo/prompt to save' is disabled in preferences.

If mixer==true, returns true if the track is visible in the mixer. If mixer==false, returns true if the track is visible in the track control panel.

creates a joystick device

destroys a joystick device

enumerates installed devices, returns GUID as a string

returns axis value (-1..1)

returns button pressed mask, 1=first button, 2=second...

returns button count

returns POV value (usually 0..655.35, or 655.35 on error)

Updates joystick state from hardware, returns true if successful (joystick_get* will not be valid until joystick_update() is called successfully)

Returns false if the line is entirely offscreen.

Returns a localized version of src_string, in section section. flags can have 1 set to only localize if sprintf-style formatting matches the original.

Move the loop selection left or right. Returns true if snap is enabled.

See Main_OnCommandEx.

Performs an action belonging to the main action section. To perform non-native actions (ReaScripts, custom or extension plugins' actions) safely, see NamedCommandLookup().

opens a project. will prompt the user to save unless name is prefixed with 'noprompt:'. If name is prefixed with 'template:', project file will be loaded as a template.
If passed a .RTrackTemplate file, adds the template to the existing project.

Save the project.

Save the project. options: &1=save selected tracks as track template, &2=include media with track template, &4=include envelopes with track template. See Main_openProject, Main_SaveProject.

Marks project as dirty (needing save) if 'undo/prompt to save' is enabled in preferences.

If track is supplied, item is ignored

Convert play rate to/from a value between 0 and 1, representing the position on the project playrate slider.

Convert the tempo to/from a value between 0 and 1, representing bpm in the range of 40-296 bpm.

type 0=OK,1=OKCANCEL,2=ABORTRETRYIGNORE,3=YESNOCANCEL,4=YESNO,5=RETRYCANCEL : ret 1=OK,2=CANCEL,3=ABORT,4=RETRY,5=IGNORE,6=YES,7=NO

Returns 1 if the track holds the item, 2 if the track is a folder containing the track that holds the item, etc.

Count the number of notes, CC events, and text/sysex events in a given MIDI item.

Delete a MIDI CC event.

Delete a MIDI event.

Delete a MIDI note.

Delete a MIDI text or sysex event.

Disable sorting for all MIDI insert, delete, get and set functions, until MIDI_Sort is called.

Returns the index of the next selected MIDI CC event after ccidx (-1 if there are no more selected events).

Returns the index of the next selected MIDI event after evtidx (-1 if there are no more selected events).

Returns the index of the next selected MIDI note after noteidx (-1 if there are no more selected events).

Returns the index of the next selected MIDI text/sysex event after textsyxidx (-1 if there are no more selected events).

Get all MIDI data. MIDI buffer is returned as a list of { int offset, char flag, int msglen, unsigned char msg[] }.
offset: MIDI ticks from previous event
flag: &1=selected &2=muted
flag high 4 bits for CC shape: &16=linear, &32=slow start/end, &16|32=fast start, &64=fast end, &64|16=bezier
msg: the MIDI message.
A meta-event of type 0xF followed by 'CCBZ ' and 5 more bytes represents bezier curve data for the previous MIDI event: 1 byte for the bezier type (usually 0) and 4 bytes for the bezier tension as a float.
For tick intervals longer than a 32 bit word can represent, zero-length meta events may be placed between valid events.
See MIDI_SetAllEvts.

Get MIDI CC event properties.

Get CC shape and bezier tension. See MIDI_GetCC, MIDI_SetCCShape

Get MIDI event properties.