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The main interface is render_samples function, which renders several samples in one call, to limit the number of calls from Go to C. This is compiled into a library, which is then linked and called from bridge.go.
56 lines
1.2 KiB
Go
56 lines
1.2 KiB
Go
package bridge
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import "fmt"
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import "unsafe"
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// #cgo CFLAGS: -I${INCLUDE_PATH}
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// #cgo LDFLAGS: ${LIBRARY_PATH}
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// #include <sointu.h>
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import "C"
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type SynthState = C.SynthState
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func (s *SynthState) Render(buffer []float32) int {
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fmt.Printf("Calling Render...\n")
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var ret = C.su_render_samples(s, C.int(len(buffer))/2, (*C.float)(&buffer[0]))
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fmt.Printf("Returning from Render...\n")
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return int(ret)
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}
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func (s *SynthState) SetCommands(c [2048]byte) {
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pk := *((*[2048]C.uchar)(unsafe.Pointer(&c)))
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s.Commands = pk
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}
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func (s *SynthState) SetValues(c [16384]byte) {
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pk := *((*[16384]C.uchar)(unsafe.Pointer(&c)))
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s.Values = pk
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}
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func (s *SynthState) Trigger(voice int,note int) {
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fmt.Printf("Calling Trigger...\n")
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s.Synth.Voices[voice] = C.Voice{}
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s.Synth.Voices[voice].Note = C.int(note)
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fmt.Printf("Returning from Trigger...\n")
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}
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func (s *SynthState) Release(voice int) {
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fmt.Printf("Calling Release...\n")
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s.Synth.Voices[voice].Release = 1
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fmt.Printf("Returning from Release...\n")
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}
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func (s *SynthState) RowEnd() bool {
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return s.RowTick == s.RowLen
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}
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func (s *SynthState) ResetRow() bool {
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return s.RowTick == 0
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}
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func NewSynthState() *SynthState {
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s := new(SynthState)
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s.RandSeed = 1
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return s
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}
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