remove thiserror dependency

Cargo.toml

@@ -18,7 +18,6 @@ minimp3_fixed = { version = "0.5.4", optional = true}
 symphonia = { version = "0.5.4", optional = true, default-features = false }
 crossbeam-channel = { version = "0.5.8", optional = true }
 
-thiserror = "1.0.49"
 rand = { version = "0.8.5", features = ["small_rng"], optional = true }
 tracing = { version = "0.1.40", optional = true }
 

src/decoder/symphonia.rs

@@ -1,4 +1,5 @@
-use std::time::Duration;
+use core::fmt;
+use core::time::Duration;
 use symphonia::{
     core::{
         audio::{AudioBufferRef, SampleBuffer, SignalSpec},
@@ -209,21 +210,57 @@ impl Source for SymphoniaDecoder {
 }
 
 /// Error returned when the try_seek implementation of the symphonia decoder fails.
-#[derive(Debug, thiserror::Error)]
+#[derive(Debug)]
 pub enum SeekError {
     /// Could not get next packet while refining seek position
-    #[error("Could not get next packet while refining seek position: {0:?}")]
     Refining(symphonia::core::errors::Error),
     /// Format reader failed to seek
-    #[error("Format reader failed to seek: {0:?}")]
     BaseSeek(symphonia::core::errors::Error),
     /// Decoding failed retrying on the next packet failed
-    #[error("Decoding failed retrying on the next packet failed: {0:?}")]
     Retrying(symphonia::core::errors::Error),
     /// Decoding failed on multiple consecutive packets
-    #[error("Decoding failed on multiple consecutive packets: {0:?}")]
     Decoding(symphonia::core::errors::Error),
 }
+impl fmt::Display for SeekError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            SeekError::Refining(err) => {
+                write!(
+                    f,
+                    "Could not get next packet while refining seek position: {:?}",
+                    err
+                )
+            }
+            SeekError::BaseSeek(err) => {
+                write!(f, "Format reader failed to seek: {:?}", err)
+            }
+            SeekError::Retrying(err) => {
+                write!(
+                    f,
+                    "Decoding failed retrying on the next packet failed: {:?}",
+                    err
+                )
+            }
+            SeekError::Decoding(err) => {
+                write!(
+                    f,
+                    "Decoding failed on multiple consecutive packets: {:?}",
+                    err
+                )
+            }
+        }
+    }
+}
+impl std::error::Error for SeekError {
+    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
+        match self {
+            SeekError::Refining(err) => Some(err),
+            SeekError::BaseSeek(err) => Some(err),
+            SeekError::Retrying(err) => Some(err),
+            SeekError::Decoding(err) => Some(err),
+        }
+    }
+}
 
 impl SymphoniaDecoder {
     /// Note frame offset must be set after

src/source/mod.rs

@@ -1,6 +1,7 @@
 //! Sources of sound and various filters.
 
-use std::time::Duration;
+use core::fmt;
+use core::time::Duration;
 
 use cpal::FromSample;
 
@@ -585,28 +586,59 @@ where
 /// Occurs when try_seek fails because the underlying decoder has an error or
 /// does not support seeking.
 #[non_exhaustive]
-#[derive(Debug, thiserror::Error)]
+#[derive(Debug)]
 pub enum SeekError {
-    /// On of the underlying sources does not support seeking
-    #[error("Seeking is not supported by source: {underlying_source}")]
+    /// One of the underlying sources does not support seeking
     NotSupported {
         /// The source that did not support seek
         underlying_source: &'static str,
     },
     #[cfg(feature = "symphonia")]
     /// The symphonia decoder ran into an issue
-    #[error("Error seeking: {0}")]
-    SymphoniaDecoder(#[from] crate::decoder::symphonia::SeekError),
+    SymphoniaDecoder(crate::decoder::symphonia::SeekError),
     #[cfg(feature = "wav")]
-    #[error("Error seeking in wav source: {0}")]
     /// The hound (wav) decoder ran into an issue
     HoundDecoder(std::io::Error),
     // Prefer adding an enum variant to using this. Its meant for end users their
     // own try_seek implementations
     /// Any other error probably in a custom Source
-    #[error("An error occurred")]
     Other(Box<dyn std::error::Error + Send>),
 }
+impl fmt::Display for SeekError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            SeekError::NotSupported { underlying_source } => {
+                write!(
+                    f,
+                    "Seeking is not supported by source: {}",
+                    underlying_source
+                )
+            }
+            #[cfg(feature = "symphonia")]
+            SeekError::SymphoniaDecoder(err) => write!(f, "Error seeking: {}", err),
+            #[cfg(feature = "wav")]
+            SeekError::HoundDecoder(err) => write!(f, "Error seeking in wav source: {}", err),
+            SeekError::Other(_) => write!(f, "An error occurred"),
+        }
+    }
+}
+impl std::error::Error for SeekError {
+    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
+        match self {
+            SeekError::NotSupported { .. } => None,
+            #[cfg(feature = "symphonia")]
+            SeekError::SymphoniaDecoder(err) => Some(err),
+            #[cfg(feature = "wav")]
+            SeekError::HoundDecoder(err) => Some(err),
+            SeekError::Other(err) => Some(err.as_ref()),
+        }
+    }
+}
+impl From<crate::decoder::symphonia::SeekError> for SeekError {
+    fn from(source: crate::decoder::symphonia::SeekError) -> Self {
+        SeekError::SymphoniaDecoder(source)
+    }
+}
 
 impl SeekError {
     /// Will the source remain playing at its position before the seek or is it