Replace wav with hound (#4788)

* Update lib.rs

* Update Cargo.toml

* Update lib.rs

* cargo.lock

* fix simultaneous mutable references

Cargo.lock

@@ -2704,6 +2704,7 @@ dependencies = [
  "captcha",
  "chrono",
  "elementtree",
+ "hound",
  "lemmy_api_common",
  "lemmy_db_schema",
  "lemmy_db_views",
@@ -2717,7 +2718,6 @@ dependencies = [
  "totp-rs",
  "tracing",
  "url",
- "wav",
 ]
 
 [[package]]
@@ -4708,12 +4708,6 @@ dependencies = [
  "bytemuck",
 ]
 
-[[package]]
-name = "riff"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9b1a3d5f46d53f4a3478e2be4a5a5ce5108ea58b100dcd139830eae7f79a3a1"
-
 [[package]]
 name = "ring"
 version = "0.17.8"
@@ -6442,15 +6436,6 @@ dependencies = [
  "web-sys",
 ]
 
-[[package]]
-name = "wav"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99d97402f69875b579ec37f2aa52d1f455a1d6224251edba32e8c18a5da2698d"
-dependencies = [
- "riff",
-]
-
 [[package]]
 name = "web-sys"
 version = "0.3.69"

crates/api/Cargo.toml

@@ -33,7 +33,7 @@ anyhow = { workspace = true }
 tracing = { workspace = true }
 chrono = { workspace = true }
 url = { workspace = true }
-wav = "1.0.1"
+hound = "3.5.1"
 sitemap-rs = "0.2.1"
 totp-rs = { version = "5.5.1", features = ["gen_secret", "otpauth"] }
 actix-web-httpauth = "0.8.1"

crates/api/src/lib.rs

@@ -44,32 +44,37 @@ pub mod site;
 pub mod sitemap;
 
 /// Converts the captcha to a base64 encoded wav audio file
-#[allow(deprecated)]
 pub(crate) fn captcha_as_wav_base64(captcha: &Captcha) -> LemmyResult<String> {
   let letters = captcha.as_wav();
 
   // Decode each wav file, concatenate the samples
   let mut concat_samples: Vec<i16> = Vec::new();
-  let mut any_header: Option<wav::Header> = None;
+  let mut any_header: Option<hound::WavSpec> = None;
   for letter in letters {
     let mut cursor = Cursor::new(letter.unwrap_or_default());
-    let (header, samples) = wav::read(&mut cursor)?;
-    any_header = Some(header);
-    if let Some(samples16) = samples.as_sixteen() {
+    let reader = hound::WavReader::new(&mut cursor)?;
+    any_header = Some(reader.spec());
+    let samples16 = reader
+      .into_samples::<i16>()
+      .collect::<Result<Vec<_>, _>>()
+      .with_lemmy_type(LemmyErrorType::CouldntCreateAudioCaptcha)?;
     concat_samples.extend(samples16);
-    } else {
-      Err(LemmyErrorType::CouldntCreateAudioCaptcha)?
-    }
   }
 
   // Encode the concatenated result as a wav file
   let mut output_buffer = Cursor::new(vec![]);
   if let Some(header) = any_header {
-    wav::write(
-      header,
-      &wav::BitDepth::Sixteen(concat_samples),
-      &mut output_buffer,
-    )
+    let mut writer = hound::WavWriter::new(&mut output_buffer, header)
+      .with_lemmy_type(LemmyErrorType::CouldntCreateAudioCaptcha)?;
+    let mut writer16 = writer.get_i16_writer(concat_samples.len() as u32);
+    for sample in concat_samples {
+      writer16.write_sample(sample);
+    }
+    writer16
+      .flush()
+      .with_lemmy_type(LemmyErrorType::CouldntCreateAudioCaptcha)?;
+    writer
+      .finalize()
       .with_lemmy_type(LemmyErrorType::CouldntCreateAudioCaptcha)?;
 
     Ok(base64.encode(output_buffer.into_inner()))