gotosocial/internal/media/ffmpeg/ffprobe_nowasm.go

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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//go:build nowasm
package ffmpeg
import (
"context"
"os/exec"
)
// ffprobeRunner limits the number of
// ffprobe WebAssembly instances that
// may be concurrently running, in
// order to reduce memory usage.
var ffprobeRunner runner
// InitFfprobe looks for a local copy of ffprobe in path, and prepares
// the runner to only allow max given concurrent running instances.
func InitFfprobe(ctx context.Context, max int) error {
_, err := exec.LookPath("ffprobe")
if err != nil {
return err
}
ffprobeRunner.Init(max)
return nil
}
// Ffprobe runs the given arguments with an instance of ffprobe.
func Ffprobe(ctx context.Context, args Args) (uint32, error) {
return ffprobeRunner.Run(ctx, func() (uint32, error) {
return runCmd(ctx, "ffprobe", args)
})
}