Stu Leak
68df790d27
Major improvements to UnifiedPlayer: 1. GetFrameImage() now works when paused for responsive UI updates 2. Play() method properly starts FFmpeg process 3. Frame display loop runs continuously for smooth video display 4. Disabled audio temporarily to fix video playback fundamentals 5. Simplified FFmpeg command to focus on video stream only Player now: - Generates video frames correctly - Shows video when paused - Has responsive progress tracking - Starts playback properly Next steps: Re-enable audio playback once video is stable
80 lines
1.4 KiB
Go
80 lines
1.4 KiB
Go
//go:build js && wasm
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// Package stackerr adds stack traces to verbose error messages.
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package stackerr
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import (
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"fmt"
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"runtime"
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"strings"
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)
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type stackError struct {
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err error
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stack *stacktrace
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}
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// WithStack returns 'err' with a stack trace in its verbose formatter output.
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// Returns nil if err is nil.
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func WithStack(err error) error {
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if err == nil {
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return nil
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}
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return &stackError{
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err: err,
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stack: collectStacktrace(3),
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}
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}
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func (s *stackError) Error() string {
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return s.err.Error()
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}
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func (s *stackError) Unwrap() error {
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return s.err
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}
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func (s *stackError) Format(f fmt.State, verb rune) {
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switch verb {
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case 'v':
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if f.Flag('+') {
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fmt.Fprintf(f, "%+v\n%s", s.err, s.stack)
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return
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}
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fmt.Fprint(f, s.Error())
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case 's':
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fmt.Fprint(f, s.Error())
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case 'q':
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fmt.Fprintf(f, "%q", s.Error())
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}
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}
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type stacktrace struct {
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callers []uintptr
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}
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func collectStacktrace(skip int) *stacktrace {
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const (
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maxFrames = 32
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)
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pc := make([]uintptr, maxFrames)
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n := runtime.Callers(1+skip, pc)
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return &stacktrace{
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callers: pc[:n],
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}
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}
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func (s *stacktrace) String() string {
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var sb strings.Builder
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frames := runtime.CallersFrames(s.callers)
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for frame, next := frames.Next(); next; frame, next = frames.Next() {
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funcName := "unknown"
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if frame.Func != nil {
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funcName = frame.Func.Name()
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}
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sb.WriteString(fmt.Sprintf("%s\n\t%s:%d\n", funcName, frame.File, frame.Line))
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}
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return sb.String()
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}
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