93 lines
2.7 KiB
Go
93 lines
2.7 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package ffmpeg
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import (
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"context"
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ffprobelib "codeberg.org/gruf/go-ffmpreg/embed/ffprobe"
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"codeberg.org/gruf/go-ffmpreg/util"
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"codeberg.org/gruf/go-ffmpreg/wasm"
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"github.com/tetratelabs/wazero"
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"github.com/tetratelabs/wazero/api"
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"github.com/tetratelabs/wazero/imports/wasi_snapshot_preview1"
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)
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// InitFfprobe initializes the ffprobe WebAssembly instance pool,
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// with given maximum limiting the number of concurrent instances.
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func InitFfprobe(ctx context.Context, max int) error {
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initCache() // ensure compilation cache initialized
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return ffprobePool.Init(ctx, max)
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}
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// Ffprobe runs the given arguments with an instance of ffprobe.
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func Ffprobe(ctx context.Context, args wasm.Args) (uint32, error) {
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return ffprobePool.Run(ctx, args)
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}
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var ffprobePool = wasmInstancePool{
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inst: wasm.Instantiator{
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// WASM module name.
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Module: "ffprobe",
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// Per-instance WebAssembly runtime (with shared cache).
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Runtime: func(ctx context.Context) wazero.Runtime {
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// Prepare config with cache.
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cfg := wazero.NewRuntimeConfig()
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cfg = cfg.WithCoreFeatures(ffprobelib.CoreFeatures)
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cfg = cfg.WithCompilationCache(cache)
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// Instantiate runtime with our config.
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rt := wazero.NewRuntimeWithConfig(ctx, cfg)
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// Prepare default "env" host module.
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env := rt.NewHostModuleBuilder("env")
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env = env.NewFunctionBuilder().
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WithGoModuleFunction(
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api.GoModuleFunc(util.Wasm_Tempnam),
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[]api.ValueType{api.ValueTypeI32, api.ValueTypeI32},
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[]api.ValueType{api.ValueTypeI32},
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).
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Export("tempnam")
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// Instantiate "env" module in our runtime.
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_, err := env.Instantiate(context.Background())
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if err != nil {
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panic(err)
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}
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// Instantiate the wasi snapshot preview 1 in runtime.
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_, err = wasi_snapshot_preview1.Instantiate(ctx, rt)
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if err != nil {
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panic(err)
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}
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return rt
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},
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// Per-run module configuration.
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Config: wazero.NewModuleConfig,
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// Embedded WASM.
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Source: ffprobelib.B,
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},
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}
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