Remove the deprecated wav crate in favor of hound. (#2202)

Cargo.toml

@@ -48,6 +48,7 @@ fancy-regex = "0.13.0"
 gemm = { version = "0.17.0", features = ["wasm-simd128-enable"] }
 hf-hub = "0.3.0"
 half = { version = "2.3.1", features = ["num-traits", "use-intrinsics", "rand_distr"] }
+hound = "3.5.1"
 image = { version = "0.25.0", default-features = false, features = ["jpeg", "png"] }
 imageproc = { version = "0.24.0", default-features = false }
 intel-mkl-src = { version = "0.8.1", features = ["mkl-static-lp64-iomp"] }
@@ -69,7 +70,6 @@ tokenizers = { version = "0.19.1", default-features = false }
 tracing = "0.1.37"
 tracing-chrome = "0.7.1"
 tracing-subscriber = "0.3.7"
-wav = "1.0.0"
 yoke = { version = "0.7.2", features = ["derive"] }
 zip = { version = "1.1.1", default-features = false }
 metal = { version = "0.27.0", features = ["mps"]}

candle-book/Cargo.toml

@@ -37,7 +37,6 @@ tokenizers = { workspace = true, features = ["onig"] }
 tracing = { workspace = true }
 tracing-chrome = { workspace = true }
 tracing-subscriber = { workspace = true }
-wav = { workspace = true }
 # Necessary to disambiguate with tokio in wasm examples which are 1.28.1
 parquet = { workspace = true }
 image = { workspace = true }

candle-wasm-examples/whisper/Cargo.toml

@@ -21,7 +21,7 @@ log = { workspace = true }
 rand = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
-wav = { workspace = true }
+hound = { workspace = true }
 safetensors = { workspace = true }
 
 # Wasm specific crates.

candle-wasm-examples/whisper/src/worker.rs

@@ -345,16 +345,19 @@ impl Decoder {
     pub fn convert_and_run(&mut self, wav_input: &[u8]) -> anyhow::Result<Vec<Segment>> {
         let device = Device::Cpu;
         let mut wav_input = std::io::Cursor::new(wav_input);
-        let (header, data) = wav::read(&mut wav_input)?;
-        console_log!("loaded wav data: {header:?}");
-        if header.sampling_rate != m::SAMPLE_RATE as u32 {
+        let wav_reader = hound::WavReader::new(&mut wav_input)?;
+        let spec = wav_reader.spec();
+        console_log!("loaded wav data: {spec:?}");
+        if spec.sample_rate != m::SAMPLE_RATE as u32 {
             anyhow::bail!("wav file must have a {} sampling rate", m::SAMPLE_RATE);
         }
-        let data = data.as_sixteen().expect("expected 16 bit wav file");
-        let pcm_data: Vec<_> = data[..data.len() / header.channel_count as usize]
-            .iter()
-            .map(|v| *v as f32 / 32768.)
-            .collect();
+        let mut data = wav_reader.into_samples::<i16>().collect::<Vec<_>>();
+        data.truncate(data.len() / spec.channels as usize);
+        let mut pcm_data = Vec::with_capacity(data.len());
+        for d in data.into_iter() {
+            let d = d?;
+            pcm_data.push(d as f32 / 32768.)
+        }
         console_log!("pcm data loaded {}", pcm_data.len());
         let mel = crate::audio::pcm_to_mel(self.model.config(), &pcm_data, &self.mel_filters)?;
         let mel_len = mel.len();