mirror of
https://github.com/pion/mediadevices.git
synced 2026-04-22 15:57:27 +08:00
sean yu
03900dcb1b
* wip * wip * Organize * Remove unnecessary change in camera_darwin.go filtering * wip * Make observer stop safe during startup * wip IsAvailable impl * Fix non-darwin builds * Lock bg loop to main thread and add comment * Remove fmt prints * Simplify isAvailable; Add timeout for Read darwin * Match comment with code * Change to singleton pattern; Add clearer safer state machine states; Change language from Stop to Destroy; Add new error for when observer is unavailable; * Add stubs for linux * Move cancel() up so its not dead code sometimes * Add stubs for Windows too * Remove StopObserver usage * Add camera tests * Add device observer tests * Fix multiple destroy calls bug; Call setup in start * Improve isAvailable * Improve string handling in device observer c * Add error handling in example * Add comment about setup vs start * Rename and organize device observer darwin * Explicitly case initial state for setup * Fix potential destroy goroutine leak; Use only modern build tag; Return err not nil for stubs; Improve comments * Close startDone channel on device observer stop not wait
30 lines
556 B
Go
30 lines
556 B
Go
package availability
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import (
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"errors"
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)
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var (
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ErrObserverUnavailable = NewError("observer unavailable (not started or destroyed)")
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ErrUnimplemented = NewError("not implemented")
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ErrBusy = NewError("device or resource busy")
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ErrNoDevice = NewError("no such device")
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)
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type errorString struct {
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s string
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}
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func NewError(text string) error {
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return &errorString{text}
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}
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func IsError(err error) bool {
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var target *errorString
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return errors.As(err, &target)
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}
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func (e *errorString) Error() string {
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return e.s
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}
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