av/revid/file.go

55 lines
1.3 KiB
Go

/*
DESCRIPTION
file.go provides an implementation of the AVDevice interface for media files.
AUTHORS
Saxon A. Nelson-Milton <saxon@ausocean.org>
LICENSE
Copyright (C) 2019 the Australian Ocean Lab (AusOcean)
It is free software: you can redistribute it and/or modify them
under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
It is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
in gpl.txt. If not, see http://www.gnu.org/licenses.
*/
package revid
import (
"fmt"
"io"
"os"
)
type AVFile struct {
f io.ReadCloser
cfg Config
}
func NewAVFile() *AVFile { return &AVFile{} }
func (m *AVFile) Stop() error { return m.f.Close() }
func (m *AVFile) Read(p []byte) (int, error) { return m.f.Read(p) }
func (m *AVFile) Set(c Config) error {
m.cfg = c
return nil
}
func (m *AVFile) Start() error {
var err error
m.f, err = os.Open(m.cfg.InputPath)
if err != nil {
return fmt.Errorf("could not open media file: %w", err)
}
return nil
}