intermediate plumbing for new vocoders

src/database/enums/mod.rs

@@ -1 +1,2 @@
-pub mod record_visibility;
+pub mod record_visibility;
+pub mod vocoder_type;

src/database/enums/vocoder_type.rs

@@ -0,0 +1,29 @@
+//! These denote the pretrained vocoders
+
+use anyhow::anyhow;
+use crate::util::anyhow_result::AnyhowResult;
+
+#[derive(Clone, Copy, PartialEq, Eq, Debug, Serialize, Deserialize, sqlx::Type)]
+#[serde(rename_all = "lowercase")]
+#[sqlx(rename_all = "lowercase")]
+pub enum VocoderType {
+  HifiGanSuperSample,
+  WaveGlow,
+}
+
+impl VocoderType {
+  pub fn to_str(&self) -> &'static str {
+    match self {
+      VocoderType::HifiGanSuperSample => "hifigan-supersample",
+      VocoderType::WaveGlow => "waveglow",
+    }
+  }
+
+  pub fn from_str(vocoder_type: &str) -> AnyhowResult<Self> {
+    match vocoder_type {
+      "hifigan-supersample" => Ok(VocoderType::HifiGanSuperSample),
+      "waveglow" => Ok(VocoderType::WaveGlow),
+      _ => Err(anyhow!("invalid value: {:?}", vocoder_type)),
+    }
+  }
+}