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@ -59,6 +59,11 @@ var DefaultConfig = HardwareConfig{
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ScanMode: Progressive,
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}
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type RuntimeOptions struct {
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// Control speed of GPIO updates. Valid range is 0..3
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GPIOSlowdown int
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}
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// HardwareConfig rgb-led-matrix configuration
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type HardwareConfig struct {
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// Rows the number of rows supported by the display, so 32 or 16.
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@ -104,6 +109,17 @@ func (c *HardwareConfig) geometry() (width, height int) {
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return c.Cols * c.ChainLength, c.Rows * c.Parallel
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}
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func (r *RuntimeOptions) toC() *C.struct_RuntimeOptions {
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o := &C.struct_RuntimeOptions{}
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o.gpio_slowdown = C.int(r.GPIOSlowdown)
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if c.GPIOSlowdown > 0 || c.GPIOSlowdown > 4 {
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o.gpio_slowdown = 1
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}
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return o
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}
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func (c *HardwareConfig) toC() *C.struct_RGBLedMatrixOptions {
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o := &C.struct_RGBLedMatrixOptions{}
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o.rows = C.int(c.Rows)
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@ -190,6 +206,39 @@ func NewRGBLedMatrix(config *HardwareConfig) (c Matrix, err error) {
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return c, nil
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}
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// NewRGBLedMatrix returns a new matrix using the given size and config
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func NewRGBLedMatrixWithOptions(config *HardwareConfig, run *RuntimeOptions) (c Matrix, err error) {
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defer func() {
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if r := recover(); r != nil {
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var ok bool
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err, ok = r.(error)
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if !ok {
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err = fmt.Errorf("error creating matrix: %v", r)
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}
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}
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}()
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if isMatrixEmulator() {
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return buildMatrixEmulator(config), nil
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}
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w, h := config.geometry()
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m := C.from_matrix(C.CreateMatrixFromOptions(config.toC(), run.toC()))
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b := C.led_matrix_create_offscreen_canvas(m)
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c = &RGBLedMatrix{
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Config: config,
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width: w, height: h,
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matrix: m,
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buffer: b,
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leds: make([]C.uint32_t, w*h),
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}
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if m == nil {
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return nil, fmt.Errorf("unable to allocate memory")
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}
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return c, nil
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}
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func isMatrixEmulator() bool {
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if os.Getenv(MatrixEmulatorENV) == "1" {
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return true
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