mirror of
https://github.com/onyx-and-iris/voicemeeter.git
synced 2024-11-15 17:40:51 +00:00
351 lines
8.9 KiB
Go
351 lines
8.9 KiB
Go
package voicemeeter
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import (
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"bytes"
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"fmt"
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"math"
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"os"
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"strings"
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"syscall"
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"time"
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"unsafe"
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)
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var (
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mod = syscall.NewLazyDLL(getDllPath())
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vmLogin = mod.NewProc("VBVMR_Login")
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vmLogout = mod.NewProc("VBVMR_Logout")
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vmRunvm = mod.NewProc("VBVMR_RunVoicemeeter")
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vmGetvmType = mod.NewProc("VBVMR_GetVoicemeeterType")
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vmGetvmVersion = mod.NewProc("VBVMR_GetVoicemeeterVersion")
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vmPdirty = mod.NewProc("VBVMR_IsParametersDirty")
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vmGetParamFloat = mod.NewProc("VBVMR_GetParameterFloat")
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vmGetParamString = mod.NewProc("VBVMR_GetParameterStringA")
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vmGetLevelFloat = mod.NewProc("VBVMR_GetLevel")
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vmSetParamFloat = mod.NewProc("VBVMR_SetParameterFloat")
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vmSetParameters = mod.NewProc("VBVMR_SetParameters")
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vmSetParamString = mod.NewProc("VBVMR_SetParameterStringA")
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vmGetDevNumIn = mod.NewProc("VBVMR_Input_GetDeviceNumber")
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vmGetDevDescIn = mod.NewProc("VBVMR_Input_GetDeviceDescA")
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vmGetDevNumOut = mod.NewProc("VBVMR_Output_GetDeviceNumber")
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vmGetDevDescOut = mod.NewProc("VBVMR_Output_GetDeviceDescA")
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vmMdirty = mod.NewProc("VBVMR_MacroButton_IsDirty")
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vmGetMacroStatus = mod.NewProc("VBVMR_MacroButton_GetStatus")
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vmSetMacroStatus = mod.NewProc("VBVMR_MacroButton_SetStatus")
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vmGetMidiMessage = mod.NewProc("VBVMR_GetMidiMessage")
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)
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// login logs into the API,
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// attempts to launch Voicemeeter if it's not running,
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// initializes dirty parameters.
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func login(kindId string) {
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res, _, _ := vmLogin.Call()
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if res == 1 {
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runVoicemeeter(kindId)
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time.Sleep(time.Second)
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} else if res != 0 {
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err := fmt.Errorf("VBVMR_Login returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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fmt.Println("Logged into API")
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for pdirty() || mdirty() {
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}
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}
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// logout logs out of the API,
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// delayed for 100ms to allow final operation to complete.
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func logout() {
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time.Sleep(100 * time.Millisecond)
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res, _, _ := vmLogout.Call()
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if res != 0 {
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err := fmt.Errorf("VBVMR_Logout returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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fmt.Println("Logged out of API")
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}
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// runVoicemeeter attempts to launch a Voicemeeter GUI of a kind.
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func runVoicemeeter(kindId string) {
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vals := map[string]uint64{
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"basic": 1,
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"banana": 2,
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"potato": 3,
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}
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res, _, _ := vmRunvm.Call(uintptr(vals[kindId]))
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if res != 0 {
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err := fmt.Errorf("VBVMR_RunVoicemeeter returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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}
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// getVersion returns the version of Voicemeeter as a string
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func getVersion() string {
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var ver uint64
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res, _, _ := vmGetvmVersion.Call(uintptr(unsafe.Pointer(&ver)))
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if res != 0 {
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err := fmt.Errorf("VBVMR_GetVoicemeeterVersion returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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v1 := (ver & 0xFF000000) >> 24
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v2 := (ver & 0x00FF0000) >> 16
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v3 := (ver & 0x0000FF00) >> 8
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v4 := ver & 0x000000FF
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return fmt.Sprintf("%d.%d.%d.%d", v1, v2, v3, v4)
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}
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// pdirty returns true iff a parameter value has changed
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func pdirty() bool {
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res, _, _ := vmPdirty.Call()
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return int(res) == 1
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}
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// mdirty returns true iff a macrobutton value has changed
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func mdirty() bool {
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res, _, _ := vmMdirty.Call()
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return int(res) == 1
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}
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// ldirty returns true iff a level value has changed
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func ldirty(k *kind) bool {
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_levelCache.stripLevelsBuff = make([]float32, (2*k.PhysIn)+(8*k.VirtIn))
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_levelCache.busLevelsBuff = make([]float32, 8*k.NumBus())
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for i := 0; i < (2*k.PhysIn)+(8*k.VirtIn); i++ {
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_levelCache.stripLevelsBuff[i] = float32(getLevel(_levelCache.stripMode, i))
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_levelCache.stripComp[i] = _levelCache.stripLevelsBuff[i] == _levelCache.stripLevels[i]
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}
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for i := 0; i < 8*k.NumBus(); i++ {
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_levelCache.busLevelsBuff[i] = float32(getLevel(3, i))
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_levelCache.busComp[i] = _levelCache.busLevelsBuff[i] == _levelCache.busLevels[i]
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}
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return !(allTrue(_levelCache.stripComp, (2*k.PhysIn)+(8*k.VirtIn)) && allTrue(_levelCache.busComp, 8*k.NumBus()))
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}
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// getVMType returns the type of Voicemeeter, as a string
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func getVMType() string {
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var type_ uint64
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res, _, _ := vmGetvmType.Call(
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uintptr(unsafe.Pointer(&type_)),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_GetVoicemeeterType returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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vals := map[uint64]string{
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1: "basic",
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2: "banana",
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3: "potato",
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}
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return vals[type_]
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}
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// getParameterFloat gets the value of a float parameter
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func getParameterFloat(name string) float64 {
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var value float32
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b := append([]byte(name), 0)
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res, _, _ := vmGetParamFloat.Call(
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uintptr(unsafe.Pointer(&b[0])),
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uintptr(unsafe.Pointer(&value)),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_GetParameterFloat returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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return math.Round(float64(value)*10) / 10
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}
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// setParameterFloat sets the value of a float parameter
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func setParameterFloat(name string, value float32) {
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b1 := append([]byte(name), 0)
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b2 := math.Float32bits(value)
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res, _, _ := vmSetParamFloat.Call(
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uintptr(unsafe.Pointer(&b1[0])),
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uintptr(b2),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_SetParameterFloat returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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}
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// getParameterString gets the value of a string parameter
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func getParameterString(name string) string {
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b1 := append([]byte(name), 0)
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var b2 [512]byte
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res, _, _ := vmGetParamString.Call(
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uintptr(unsafe.Pointer(&b1[0])),
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uintptr(unsafe.Pointer(&b2[0])),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_GetParameterStringA returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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str := bytes.Trim(b2[:], "\x00")
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return string(str)
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}
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// getParameterString sets the value of a string parameter
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func setParameterString(name, value string) {
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b1 := append([]byte(name), 0)
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b2 := append([]byte(value), 0)
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res, _, _ := vmSetParamString.Call(
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uintptr(unsafe.Pointer(&b1[0])),
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uintptr(unsafe.Pointer(&b2[0])),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_SetParameterStringA returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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}
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// setParametersMulti sets multiple parameters with a script
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func setParametersMulti(script string) {
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b1 := append([]byte(script), 0)
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res, _, _ := vmSetParameters.Call(
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uintptr(unsafe.Pointer(&b1[0])),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_SetParameters returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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}
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// getMacroStatus gets a macrobutton value
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func getMacroStatus(id, mode int) float32 {
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var state float32
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res, _, _ := vmGetMacroStatus.Call(
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uintptr(id),
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uintptr(unsafe.Pointer(&state)),
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uintptr(mode),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_MacroButton_GetStatus returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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return state
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}
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// setMacroStatus sets a macrobutton value
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func setMacroStatus(id, state, mode int) {
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res, _, _ := vmSetMacroStatus.Call(
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uintptr(id),
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uintptr(state),
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uintptr(mode),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_MacroButton_SetStatus returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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}
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// getNumDevices returns the number of hardware input/output devices
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func getNumDevices(dir string) uint64 {
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if strings.Compare(dir, "in") == 0 {
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res, _, _ := vmGetDevNumIn.Call()
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return uint64(res)
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} else {
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res, _, _ := vmGetDevNumOut.Call()
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return uint64(res)
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}
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}
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// getDeviceDescription returns name, driver type and hwid for a given device
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func getDeviceDescription(i int, dir string) (string, uint64, string) {
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var t_ uint64
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var b1 [512]byte
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var b2 [512]byte
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if strings.Compare(dir, "in") == 0 {
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res, _, _ := vmGetDevDescIn.Call(
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uintptr(i),
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uintptr(unsafe.Pointer(&t_)),
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uintptr(unsafe.Pointer(&b1[0])),
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uintptr(unsafe.Pointer(&b2[0])),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_Input_GetDeviceDescA returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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} else {
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res, _, _ := vmGetDevDescOut.Call(
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uintptr(i),
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uintptr(unsafe.Pointer(&t_)),
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uintptr(unsafe.Pointer(&b1[0])),
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uintptr(unsafe.Pointer(&b2[0])),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_Output_GetDeviceDescA returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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}
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name := bytes.Trim(b1[:], "\x00")
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hwid := bytes.Trim(b2[:], "\x00")
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return string(name), t_, string(hwid)
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}
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// getLevel returns a single level value of type type_ for channel[i]
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func getLevel(type_, i int) float32 {
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var val float32
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res, _, _ := vmGetLevelFloat.Call(
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uintptr(type_),
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uintptr(i),
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uintptr(unsafe.Pointer(&val)),
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)
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if res != 0 {
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err := fmt.Errorf("VBVMR_GetLevel returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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return val
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}
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// getMidiMessage gets midi channel, pitch and velocity for a single midi input
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func getMidiMessage() bool {
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var midi = newMidi()
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var b1 [1024]byte
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res, _, _ := vmGetMidiMessage.Call(
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uintptr(unsafe.Pointer(&b1[0])),
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uintptr(1024),
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)
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if int(res) < 0 {
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err := fmt.Errorf("VBVMR_GetMidiMessage returned %d", res)
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fmt.Println(err)
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os.Exit(1)
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}
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msg := bytes.Trim(b1[:], "\x00")
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if len(msg) > 0 {
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for i := 0; i < len(msg)%3; i++ {
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msg = append(msg, 0)
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}
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for i := 0; i < len(msg); i += 3 {
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var ch = int(msg[i])
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var pitch = int(msg[i+1])
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var vel = int(msg[i+2])
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midi.channel = ch
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midi.current = pitch
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midi.cache[pitch] = vel
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}
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}
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return len(msg) > 0
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}
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