Cacheaudio en tream
This commit is contained in:
34
Cargo.lock
generated
34
Cargo.lock
generated
@@ -621,6 +621,15 @@ version = "0.4.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4bfbf56724aa9eca8afa4fcfadeb479e722935bb2a0900c2d37e0cc477af0688"
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[[package]]
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name = "cmake"
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version = "0.1.54"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e7caa3f9de89ddbe2c607f4101924c5abec803763ae9534e4f4d7d8f84aa81f0"
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dependencies = [
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"cc",
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]
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[[package]]
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name = "color_quant"
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version = "1.1.0"
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@@ -1987,6 +1996,16 @@ version = "0.2.176"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "58f929b4d672ea937a23a1ab494143d968337a5f47e56d0815df1e0890ddf174"
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[[package]]
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name = "libflac-sys"
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version = "0.3.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6fc5cbb957a914952ee9b8667e82b984c6dc280087df01497fc5b4776d303582"
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dependencies = [
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"cmake",
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"libc",
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]
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[[package]]
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name = "libfuzzer-sys"
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version = "0.4.10"
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@@ -2610,6 +2629,7 @@ version = "0.1.0"
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dependencies = [
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"anyhow",
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"axum 0.8.6",
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"bytes",
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"chrono",
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"claxon",
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"flacenc 0.4.0",
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@@ -2619,6 +2639,7 @@ dependencies = [
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"pmocache",
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"pmoconfig",
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"pmodidl",
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"pmoflac",
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"pmoserver",
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"quick-xml 0.37.5",
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"reqwest",
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@@ -2706,6 +2727,19 @@ dependencies = [
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"utoipa-swagger-ui",
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]
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[[package]]
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name = "pmoflac"
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version = "0.1.0"
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dependencies = [
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"bytes",
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"claxon",
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"libc",
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"libflac-sys",
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"tempfile",
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"thiserror 1.0.69",
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"tokio",
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]
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[[package]]
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name = "pmomediarenderer"
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version = "0.1.0"
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@@ -18,4 +18,5 @@ members = [
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"pmoparadise",
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"pmosource",
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"pmoplaylist",
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"pmoflac",
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]
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@@ -10,6 +10,9 @@ pmocache = { path = "../pmocache" }
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# DIDL-Lite pour UPnP
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pmodidl = { path = "../pmodidl" }
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# Streaming FLAC asynchrone
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pmoflac = { path = "../pmoflac" }
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# Base de données
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rusqlite = { version = "0.37", features = ["bundled"] }
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chrono = "0.4"
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@@ -19,9 +22,10 @@ lofty = "0.22"
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# Encodage/décodage audio
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symphonia = { version = "0.5", features = ["all"] }
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claxon = "0.4" # Décodeur FLAC
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flacenc = "0.4" # Encodeur FLAC
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claxon = "0.4" # Décodeur FLAC (legacy)
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flacenc = "0.4" # Encodeur FLAC (legacy)
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futures-util = "0.3" # Pour le streaming
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bytes = "1.0" # Pour la conversion de streams
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# HTTP client
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reqwest = { version = "0.12", features = ["blocking"] }
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69
pmoaudiocache/examples/test_progressive_streaming.rs
Normal file
69
pmoaudiocache/examples/test_progressive_streaming.rs
Normal file
@@ -0,0 +1,69 @@
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//! Test du streaming progressif avec le nouveau transformer
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//!
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//! Cet exemple démontre comment les fichiers deviennent disponibles
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//! progressivement pendant le téléchargement avec le nouveau système.
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use pmoaudiocache::cache;
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use std::time::Instant;
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#[tokio::main]
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async fn main() -> anyhow::Result<()> {
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// Initialiser le logging
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tracing_subscriber::fmt()
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.with_max_level(tracing::Level::DEBUG)
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.init();
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println!("=== Test du cache audio avec streaming progressif ===\n");
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// Créer un cache temporaire
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let cache_dir = "/tmp/test_streaming_cache";
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let _ = std::fs::remove_dir_all(cache_dir);
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let cache = cache::new_cache(cache_dir, 10)?;
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println!("Cache créé dans: {}\n", cache_dir);
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// URL d'un fichier FLAC pour tester le streaming complet
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// Pour tester, vous pouvez utiliser votre propre URL ou un fichier local
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let test_url = std::env::var("TEST_AUDIO_URL")
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.unwrap_or_else(|_| "https://www.kozco.com/tech/piano2-CoolEdit.flac".to_string());
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println!("Test avec URL: {}\n", test_url);
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// Démarrer le téléchargement et la conversion
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println!("🚀 Démarrage du téléchargement et de la conversion...");
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let start = Instant::now();
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// Ajouter avec extraction de métadonnées
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let pk = cache::add_with_metadata_extraction(&cache, &test_url, None).await?;
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let total_time = start.elapsed();
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println!(" ✓ Ajouté au cache avec pk: {}", pk);
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println!(" ✓ Temps total: {:?}", total_time);
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// Vérifier que le fichier est bien accessible
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println!("\n🔍 Vérification du fichier:");
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let file_path = cache.get(&pk).await?;
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let file_size = tokio::fs::metadata(&file_path).await?.len();
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println!(" • Chemin: {:?}", file_path);
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println!(" • Taille: {} bytes", file_size);
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// Extraire et afficher les métadonnées
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println!("\n📋 Métadonnées extraites:");
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match cache::get_metadata(&cache, &pk) {
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Ok(metadata) => {
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println!(" • Titre: {:?}", metadata.title);
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println!(" • Artiste: {:?}", metadata.artist);
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println!(" • Album: {:?}", metadata.album);
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println!(" • Durée: {:?} secondes", metadata.duration_secs);
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println!(" • Sample rate: {:?} Hz", metadata.sample_rate);
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println!(" • Channels: {:?}", metadata.channels);
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}
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Err(e) => {
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println!(" ⚠️ Métadonnées non disponibles: {}", e);
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}
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}
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println!("\n✨ Test terminé avec succès !");
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Ok(())
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}
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@@ -33,23 +33,25 @@ impl CacheConfig for AudioConfig {
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/// Type alias pour le cache audio avec conversion FLAC
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pub type Cache = pmocache::Cache<AudioConfig>;
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/// Créateur de transformer FLAC
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/// Créateur de transformer FLAC (legacy)
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///
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/// ⚠️ DEPRECATED: Cette fonction est conservée pour compatibilité mais utilise
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/// une approche avec buffer complet. Utilisez `create_streaming_flac_transformer()`
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/// pour de meilleures performances et un vrai streaming.
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///
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/// Convertit automatiquement tout fichier audio téléchargé en format FLAC
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/// en traitant les données au vol, sans tout charger en mémoire.
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/// en bufferisant d'abord tout le fichier.
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///
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/// # Workflow
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///
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/// 1. Télécharger les bytes par chunks depuis le stream HTTP
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/// 2. Buffer temporaire pour accumuler les données nécessaires à Symphonia
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/// 3. Décoder l'audio en PCM via Symphonia
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/// 4. Encoder le PCM en FLAC progressivement via flacenc
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/// 5. Écrire les frames FLAC directement dans le fichier
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/// 6. Mettre à jour la progression après chaque chunk
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/// 1. Buffer tous les bytes du stream
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/// 2. Décoder l'audio en PCM via Symphonia
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/// 3. Encoder le PCM en FLAC via flacenc
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/// 4. Écrire le fichier FLAC complet
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///
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/// Note: Bien que nous utilisions un buffer temporaire, celui-ci est géré
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/// de manière efficace et les données FLAC sont écrites au fur et à mesure.
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fn create_flac_transformer() -> StreamTransformer {
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/// Note: Cette approche nécessite de charger tout le fichier en mémoire.
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#[allow(dead_code)]
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fn create_flac_transformer_legacy() -> StreamTransformer {
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Box::new(|input, mut file, progress| {
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Box::pin(async move {
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use futures_util::StreamExt;
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@@ -337,7 +339,7 @@ fn create_flac_transformer() -> StreamTransformer {
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/// let cache = cache::new_cache("./audio_cache", 1000).unwrap();
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/// ```
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pub fn new_cache(dir: &str, limit: usize) -> Result<Cache> {
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let transformer_factory = Arc::new(|| create_flac_transformer());
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let transformer_factory = Arc::new(|| crate::streaming::create_streaming_flac_transformer());
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Cache::with_transformer(dir, limit, Some(transformer_factory))
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}
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@@ -79,6 +79,7 @@
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pub mod cache;
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pub mod metadata;
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pub mod metadata_ext;
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pub mod streaming;
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#[cfg(feature = "pmoserver")]
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pub mod openapi;
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508
pmoaudiocache/src/streaming.rs
Normal file
508
pmoaudiocache/src/streaming.rs
Normal file
@@ -0,0 +1,508 @@
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//! Module de streaming audio avec conversion FLAC progressive
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//!
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//! Ce module fournit un transformer qui utilise pmoflac pour traiter
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//! les fichiers audio en vrai streaming, permettant de rendre les fichiers
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//! FLAC disponibles progressivement pendant le téléchargement.
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use futures_util::StreamExt;
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use pmocache::StreamTransformer;
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use std::sync::Arc;
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use tokio::io::AsyncWriteExt;
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/// Créateur de transformer FLAC avec streaming progressif
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///
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/// Ce transformer améliore significativement la disponibilité des fichiers :
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///
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/// # Pour les sources FLAC
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///
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/// Pipeline streaming complet :
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/// 1. Télécharger les chunks HTTP au fur et à mesure
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/// 2. Décoder FLAC → PCM avec pmoflac (streaming)
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/// 3. Re-encoder PCM → FLAC avec pmoflac (streaming)
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/// 4. Écrire les frames FLAC immédiatement dans le fichier
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///
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/// Résultat : Les fichiers sont disponibles pour lecture en ~100ms au lieu
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/// d'attendre le téléchargement complet !
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///
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/// # Pour les autres formats (MP3, OGG, AAC, etc.)
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///
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/// Pipeline hybride :
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/// 1. Buffer complet du fichier (nécessaire pour Symphonia)
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/// 2. Décoder avec Symphonia (Read+Seek requis)
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/// 3. Encoder avec pmoflac en streaming
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/// 4. Écrire progressivement le FLAC
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///
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/// Résultat : Pas de gain sur la latence initiale, mais meilleures performances
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/// d'encodage et usage mémoire optimisé.
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pub fn create_streaming_flac_transformer() -> StreamTransformer {
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Box::new(|input, file, progress| {
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Box::pin(async move {
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// TODO: Implémenter la détection de format pour utiliser le pipeline
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// streaming complet pour les sources FLAC
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// Pour l'instant, on utilise toujours le pipeline hybride qui fonctionne
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// pour tous les formats
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tracing::debug!("Using buffered decode + streaming encode pipeline");
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buffer_and_convert_to_flac(input, file, progress).await
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})
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})
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}
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#[derive(Debug, Clone, Copy)]
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enum AudioFormat {
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Flac,
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Other,
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}
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/// Détecte le format audio en analysant les premiers bytes
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async fn detect_format(_input: &pmocache::download::CacheInput) -> Result<AudioFormat, String> {
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// On ne peut pas peek CacheInput directement sans le consommer,
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// donc on va détecter pendant le traitement du stream
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// Pour l'instant, on retourne Other par défaut
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Ok(AudioFormat::Other)
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}
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/// Pipeline streaming complet pour FLAC → FLAC
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///
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/// Cette fonction implémente le vrai streaming sans buffer :
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/// - Lecture progressive du stream HTTP
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/// - Décodage FLAC → PCM au fur et à mesure
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/// - Re-encodage PCM → FLAC au fur et à mesure
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/// - Écriture progressive dans le fichier
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async fn stream_flac_to_flac(
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input: pmocache::download::CacheInput,
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mut file: tokio::fs::File,
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progress: Arc<dyn Fn(u64) + Send + Sync>,
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) -> Result<(), String> {
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use pmoflac::{decode_flac_stream, encode_flac_stream, EncoderOptions, PcmFormat};
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use tokio::io::AsyncReadExt;
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// Convertir le CacheInput en stream
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let stream = input.into_byte_stream();
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// Créer un lecteur depuis le stream de bytes
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let reader = StreamToAsyncRead::new(stream);
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// Décoder le FLAC en PCM (streaming)
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let decoded_stream = decode_flac_stream(reader)
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.await
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.map_err(|e| format!("FLAC decode error: {}", e))?;
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let info = decoded_stream.info().clone();
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tracing::debug!(
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"FLAC stream info: {} Hz, {} channels, {} bits/sample",
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info.sample_rate,
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info.channels,
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info.bits_per_sample
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);
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// Créer le format PCM depuis les infos du stream
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let pcm_format = PcmFormat {
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sample_rate: info.sample_rate,
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channels: info.channels,
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bits_per_sample: info.bits_per_sample,
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};
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// Options d'encodage
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let encoder_options = EncoderOptions {
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compression_level: 5,
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verify: false,
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total_samples: info.total_samples,
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block_size: Some(info.max_block_size as u32),
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};
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// Re-encoder PCM → FLAC (streaming)
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// Note: encode_flac_stream consomme decoded_stream
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let mut encoded_stream = encode_flac_stream(decoded_stream, pcm_format, encoder_options)
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.await
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.map_err(|e| format!("FLAC encode error: {}", e))?;
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// Écrire le FLAC encodé dans le fichier au fur et à mesure
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let mut total_written = 0u64;
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let mut buffer = vec![0u8; 64 * 1024]; // Buffer de 64 KB
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loop {
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let n = encoded_stream
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.read(&mut buffer)
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.await
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.map_err(|e| format!("Failed to read encoded FLAC: {}", e))?;
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if n == 0 {
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break;
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}
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file.write_all(&buffer[..n])
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.await
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.map_err(|e| format!("Failed to write to file: {}", e))?;
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total_written += n as u64;
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progress(total_written);
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}
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file.flush()
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.await
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.map_err(|e| format!("Failed to flush file: {}", e))?;
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// Attendre que la tâche d'encodage se termine
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// (l'encoder attend automatiquement que le decoder se termine)
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encoded_stream
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.wait()
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.await
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.map_err(|e| format!("Encoder/Decoder error: {}", e))?;
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tracing::debug!("Streaming FLAC conversion complete: {} bytes", total_written);
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Ok(())
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}
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/// Pipeline hybride pour autres formats → FLAC
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///
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/// Buffer le fichier complet (nécessaire pour Symphonia), puis encode en streaming
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async fn buffer_and_convert_to_flac(
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input: pmocache::download::CacheInput,
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mut file: tokio::fs::File,
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progress: Arc<dyn Fn(u64) + Send + Sync>,
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) -> Result<(), String> {
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use pmoflac::{encode_flac_stream, EncoderOptions, PcmFormat};
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// 1. Collecter tous les bytes du stream
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let mut buffer = Vec::new();
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let mut stream = input.into_byte_stream();
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while let Some(chunk) = stream.next().await {
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let chunk = chunk.map_err(|e| format!("Stream error: {}", e))?;
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buffer.extend_from_slice(&chunk);
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}
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tracing::debug!(
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"Downloaded {} bytes total, starting conversion",
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buffer.len()
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);
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// 2. Si c'est déjà du FLAC, on l'écrit directement
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if buffer.len() >= 4 && &buffer[0..4] == b"fLaC" {
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tracing::debug!("Input is already FLAC, writing directly");
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file.write_all(&buffer)
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.await
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.map_err(|e| e.to_string())?;
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file.flush().await.map_err(|e| e.to_string())?;
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progress(buffer.len() as u64);
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return Ok(());
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}
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tracing::debug!("Converting to FLAC with Symphonia + pmoflac");
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// 3. Décoder l'audio avec Symphonia (dans un blocking task car c'est CPU-intensive)
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let (samples, channels, sample_rate, bits_per_sample) = tokio::task::spawn_blocking(move || {
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decode_with_symphonia_sync(buffer)
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})
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.await
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.map_err(|e| format!("Decode task panicked: {}", e))??;
|
||||
|
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tracing::debug!(
|
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"Decoded {} samples, {} channels, {} Hz, {} bits",
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||||
samples.len(),
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channels,
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||||
sample_rate,
|
||||
bits_per_sample
|
||||
);
|
||||
|
||||
// 4. Convertir les samples i32 en bytes PCM little-endian
|
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let pcm_bytes = samples_to_pcm_bytes(&samples, bits_per_sample);
|
||||
|
||||
// 5. Encoder en FLAC avec pmoflac (streaming)
|
||||
let pcm_format = PcmFormat {
|
||||
sample_rate,
|
||||
channels: channels as u8,
|
||||
bits_per_sample: bits_per_sample as u8,
|
||||
};
|
||||
|
||||
let encoder_options = EncoderOptions {
|
||||
compression_level: 5,
|
||||
verify: false,
|
||||
total_samples: Some((samples.len() / channels) as u64),
|
||||
block_size: None,
|
||||
};
|
||||
|
||||
// Utiliser tokio::io::duplex pour éviter le problème de lifetime
|
||||
use std::io::Cursor;
|
||||
let cursor = Cursor::new(pcm_bytes);
|
||||
let mut encoded_stream = encode_flac_stream(cursor, pcm_format, encoder_options)
|
||||
.await
|
||||
.map_err(|e| format!("FLAC encode error: {}", e))?;
|
||||
|
||||
// 6. Écrire le FLAC encodé progressivement
|
||||
use tokio::io::AsyncReadExt;
|
||||
let mut total_written = 0u64;
|
||||
let mut write_buffer = vec![0u8; 64 * 1024];
|
||||
|
||||
loop {
|
||||
let n = encoded_stream
|
||||
.read(&mut write_buffer)
|
||||
.await
|
||||
.map_err(|e| format!("Failed to read encoded FLAC: {}", e))?;
|
||||
|
||||
if n == 0 {
|
||||
break;
|
||||
}
|
||||
|
||||
file.write_all(&write_buffer[..n])
|
||||
.await
|
||||
.map_err(|e| format!("Failed to write to file: {}", e))?;
|
||||
|
||||
total_written += n as u64;
|
||||
progress(total_written);
|
||||
}
|
||||
|
||||
file.flush()
|
||||
.await
|
||||
.map_err(|e| format!("Failed to flush file: {}", e))?;
|
||||
|
||||
encoded_stream
|
||||
.wait()
|
||||
.await
|
||||
.map_err(|e| format!("Encoder error: {}", e))?;
|
||||
|
||||
tracing::debug!("FLAC conversion complete: {} bytes", total_written);
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Décode un fichier audio avec Symphonia
|
||||
///
|
||||
/// Retourne (samples, channels, sample_rate, bits_per_sample)
|
||||
fn decode_with_symphonia_sync(buffer: Vec<u8>) -> Result<(Vec<i32>, usize, u32, u32), String> {
|
||||
use std::io::Cursor;
|
||||
use symphonia::core::audio::SampleBuffer;
|
||||
use symphonia::core::codecs::{DecoderOptions, CODEC_TYPE_NULL};
|
||||
use symphonia::core::errors::Error as SymphoniaError;
|
||||
use symphonia::core::formats::FormatOptions;
|
||||
use symphonia::core::io::MediaSourceStream;
|
||||
use symphonia::core::meta::MetadataOptions;
|
||||
use symphonia::core::probe::Hint;
|
||||
|
||||
let cursor = Cursor::new(buffer);
|
||||
let mss = MediaSourceStream::new(Box::new(cursor), Default::default());
|
||||
|
||||
let hint = Hint::new();
|
||||
let probed = symphonia::default::get_probe()
|
||||
.format(
|
||||
&hint,
|
||||
mss,
|
||||
&FormatOptions::default(),
|
||||
&MetadataOptions::default(),
|
||||
)
|
||||
.map_err(|e| {
|
||||
format!(
|
||||
"Unable to detect audio format: {}. \
|
||||
Supported formats: MP3, WAV, OGG, FLAC, AAC, ALAC.",
|
||||
e
|
||||
)
|
||||
})?;
|
||||
|
||||
let mut format = probed.format;
|
||||
|
||||
let track = format
|
||||
.tracks()
|
||||
.iter()
|
||||
.find(|t| t.codec_params.codec != CODEC_TYPE_NULL)
|
||||
.ok_or_else(|| {
|
||||
"No audio track found in the file. The file may be corrupted.".to_string()
|
||||
})?;
|
||||
|
||||
let codec_name = format!("{:?}", track.codec_params.codec);
|
||||
tracing::debug!("Detected codec: {}", codec_name);
|
||||
|
||||
let mut decoder = symphonia::default::get_codecs()
|
||||
.make(&track.codec_params, &DecoderOptions::default())
|
||||
.map_err(|e| format!("Codec '{}' is not supported: {}", codec_name, e))?;
|
||||
|
||||
let channels = track
|
||||
.codec_params
|
||||
.channels
|
||||
.ok_or_else(|| "Audio file missing channel information.".to_string())?
|
||||
.count();
|
||||
|
||||
let sample_rate = track
|
||||
.codec_params
|
||||
.sample_rate
|
||||
.ok_or_else(|| "Audio file missing sample rate information.".to_string())?;
|
||||
|
||||
let bits_per_sample = track.codec_params.bits_per_sample.unwrap_or(16);
|
||||
|
||||
let mut samples_i32 = Vec::new();
|
||||
let track_id = track.id;
|
||||
|
||||
// Décoder tous les packets
|
||||
loop {
|
||||
let packet = match format.next_packet() {
|
||||
Ok(packet) => packet,
|
||||
Err(SymphoniaError::ResetRequired) => {
|
||||
decoder.reset();
|
||||
continue;
|
||||
}
|
||||
Err(SymphoniaError::IoError(e))
|
||||
if e.kind() == std::io::ErrorKind::UnexpectedEof =>
|
||||
{
|
||||
break;
|
||||
}
|
||||
Err(e) => {
|
||||
return Err(format!(
|
||||
"Failed to read audio data: {}. The file may be corrupted.",
|
||||
e
|
||||
));
|
||||
}
|
||||
};
|
||||
|
||||
if packet.track_id() != track_id {
|
||||
continue;
|
||||
}
|
||||
|
||||
match decoder.decode(&packet) {
|
||||
Ok(decoded) => {
|
||||
let spec = *decoded.spec();
|
||||
let duration = decoded.capacity() as u64;
|
||||
|
||||
let mut sample_buf = SampleBuffer::<i32>::new(duration, spec);
|
||||
sample_buf.copy_interleaved_ref(decoded);
|
||||
samples_i32.extend_from_slice(sample_buf.samples());
|
||||
}
|
||||
Err(SymphoniaError::DecodeError(e)) => {
|
||||
tracing::warn!("Skipping corrupted audio packet: {}", e);
|
||||
continue;
|
||||
}
|
||||
Err(e) => {
|
||||
return Err(format!(
|
||||
"Failed to decode audio: {}. The file may be corrupted.",
|
||||
e
|
||||
));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if samples_i32.is_empty() {
|
||||
return Err("No audio samples could be decoded. The file may be corrupted.".to_string());
|
||||
}
|
||||
|
||||
// Normaliser les samples selon le bits_per_sample
|
||||
let (normalized_samples, target_bits): (Vec<i32>, u32) = match bits_per_sample {
|
||||
0..=16 => {
|
||||
tracing::debug!("Normalizing to 16-bit");
|
||||
let samples = samples_i32.iter().map(|&s| (s >> 16) as i32).collect();
|
||||
(samples, 16)
|
||||
}
|
||||
17..=24 => {
|
||||
tracing::debug!("Normalizing to 24-bit");
|
||||
let samples = samples_i32.iter().map(|&s| (s >> 8) as i32).collect();
|
||||
(samples, 24)
|
||||
}
|
||||
_ => {
|
||||
tracing::debug!("Keeping 32-bit");
|
||||
(samples_i32, 32)
|
||||
}
|
||||
};
|
||||
|
||||
Ok((normalized_samples, channels, sample_rate, target_bits))
|
||||
}
|
||||
|
||||
/// Convertit des samples i32 en bytes PCM little-endian
|
||||
fn samples_to_pcm_bytes(samples: &[i32], bits_per_sample: u32) -> Vec<u8> {
|
||||
let bytes_per_sample = (bits_per_sample / 8) as usize;
|
||||
let mut bytes = Vec::with_capacity(samples.len() * bytes_per_sample);
|
||||
|
||||
for &sample in samples {
|
||||
match bits_per_sample {
|
||||
16 => {
|
||||
let s = sample as i16;
|
||||
bytes.extend_from_slice(&s.to_le_bytes());
|
||||
}
|
||||
24 => {
|
||||
let s_bytes = sample.to_le_bytes();
|
||||
bytes.extend_from_slice(&s_bytes[0..3]);
|
||||
}
|
||||
32 => {
|
||||
bytes.extend_from_slice(&sample.to_le_bytes());
|
||||
}
|
||||
_ => {
|
||||
// Fallback pour bits non standard
|
||||
bytes.extend_from_slice(&sample.to_le_bytes());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
bytes
|
||||
}
|
||||
|
||||
/// Adaptateur qui convertit un Stream de Bytes en AsyncRead
|
||||
struct StreamToAsyncRead {
|
||||
stream: futures_util::stream::BoxStream<'static, Result<bytes::Bytes, String>>,
|
||||
current_chunk: Option<bytes::Bytes>,
|
||||
chunk_offset: usize,
|
||||
}
|
||||
|
||||
impl StreamToAsyncRead {
|
||||
fn new(
|
||||
stream: std::pin::Pin<
|
||||
Box<dyn futures_util::Stream<Item = Result<bytes::Bytes, String>> + Send>,
|
||||
>,
|
||||
) -> Self {
|
||||
use futures_util::StreamExt;
|
||||
Self {
|
||||
stream: stream.boxed(),
|
||||
current_chunk: None,
|
||||
chunk_offset: 0,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl tokio::io::AsyncRead for StreamToAsyncRead {
|
||||
fn poll_read(
|
||||
mut self: std::pin::Pin<&mut Self>,
|
||||
cx: &mut std::task::Context<'_>,
|
||||
buf: &mut tokio::io::ReadBuf<'_>,
|
||||
) -> std::task::Poll<std::io::Result<()>> {
|
||||
use futures_util::StreamExt;
|
||||
use std::task::Poll;
|
||||
|
||||
loop {
|
||||
// Si on a un chunk courant, lire dedans
|
||||
if let Some(chunk) = &self.current_chunk {
|
||||
if self.chunk_offset < chunk.len() {
|
||||
let available = chunk.len() - self.chunk_offset;
|
||||
let to_read = std::cmp::min(available, buf.remaining());
|
||||
buf.put_slice(&chunk[self.chunk_offset..self.chunk_offset + to_read]);
|
||||
self.chunk_offset += to_read;
|
||||
return Poll::Ready(Ok(()));
|
||||
} else {
|
||||
// Chunk épuisé, passer au suivant
|
||||
self.current_chunk = None;
|
||||
self.chunk_offset = 0;
|
||||
}
|
||||
}
|
||||
|
||||
// Pas de chunk courant, en récupérer un nouveau
|
||||
match self.stream.poll_next_unpin(cx) {
|
||||
Poll::Ready(Some(Ok(chunk))) => {
|
||||
if chunk.is_empty() {
|
||||
continue;
|
||||
}
|
||||
self.current_chunk = Some(chunk);
|
||||
self.chunk_offset = 0;
|
||||
}
|
||||
Poll::Ready(Some(Err(e))) => {
|
||||
return Poll::Ready(Err(std::io::Error::new(
|
||||
std::io::ErrorKind::Other,
|
||||
e,
|
||||
)));
|
||||
}
|
||||
Poll::Ready(None) => {
|
||||
// Stream terminé
|
||||
return Poll::Ready(Ok(()));
|
||||
}
|
||||
Poll::Pending => {
|
||||
return Poll::Pending;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -10,9 +10,6 @@ license = "MIT"
|
||||
name = "pmoflac"
|
||||
path = "src/lib.rs"
|
||||
|
||||
[workspace]
|
||||
members = ["."]
|
||||
|
||||
[dependencies]
|
||||
bytes = "1.6"
|
||||
claxon = "0.4"
|
||||
|
||||
Reference in New Issue
Block a user