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Fix up audio_transcription example

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Niko 2025-08-02 19:42:32 -07:00
parent 3d70621a51
commit a9dea32c81
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1 changed files with 18 additions and 29 deletions
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47
examples/audio_transcription.rs
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@ -8,7 +8,13 @@ use whisper_rs::{FullParams, SamplingStrategy, WhisperContext, WhisperContextPar
/// Loads a context and model, processes an audio file, and prints the resulting transcript to stdout. /// Loads a context and model, processes an audio file, and prints the resulting transcript to stdout.
fn main() -> Result<(), &'static str> { fn main() -> Result<(), &'static str> {
// Load a context and model. let model_path = std::env::args()
.nth(1)
.expect("Please specify path to model as argument 1");
let wav_path = std::env::args()
.nth(2)
.expect("Please specify path to wav file as argument 2");
let mut context_param = WhisperContextParameters::default(); let mut context_param = WhisperContextParameters::default();
// Enable DTW token level timestamp for known model by using model preset // Enable DTW token level timestamp for known model by using model preset
@ -37,13 +43,11 @@ fn main() -> Result<(), &'static str> {
aheads: &custom_aheads, aheads: &custom_aheads,
}; };
let ctx = WhisperContext::new_with_params( // Load a context and model
"example/path/to/model/whisper.cpp/models/ggml-base.en.bin", let ctx =
context_param, WhisperContext::new_with_params(&model_path, context_param).expect("failed to load model");
)
.expect("failed to load model");
// Create a state // Create a state
let mut state = ctx.create_state().expect("failed to create key"); let mut state = ctx.create_state().expect("failed to create state");
// Create a params object for running the model. // Create a params object for running the model.
// The number of past samples to consider defaults to 0. // The number of past samples to consider defaults to 0.
@ -65,7 +69,7 @@ fn main() -> Result<(), &'static str> {
params.set_token_timestamps(true); params.set_token_timestamps(true);
// Open the audio file. // Open the audio file.
let reader = hound::WavReader::open("audio.wav").expect("failed to open file"); let reader = hound::WavReader::open(wav_path).expect("failed to open file");
#[allow(unused_variables)] #[allow(unused_variables)]
let hound::WavSpec { let hound::WavSpec {
channels, channels,
@ -84,7 +88,6 @@ fn main() -> Result<(), &'static str> {
// Convert audio to 16KHz mono f32 samples, as required by the model. // Convert audio to 16KHz mono f32 samples, as required by the model.
// These utilities are provided for convenience, but can be replaced with custom conversion logic. // These utilities are provided for convenience, but can be replaced with custom conversion logic.
// SIMD variants of these functions are also available on nightly Rust (see the docs).
if channels == 2 { if channels == 2 {
audio = whisper_rs::convert_stereo_to_mono_audio(&audio).expect("Conversion error"); audio = whisper_rs::convert_stereo_to_mono_audio(&audio).expect("Conversion error");
} else if channels != 1 { } else if channels != 1 {
@ -102,28 +105,14 @@ fn main() -> Result<(), &'static str> {
let mut file = File::create("transcript.txt").expect("failed to create file"); let mut file = File::create("transcript.txt").expect("failed to create file");
// Iterate through the segments of the transcript. // Iterate through the segments of the transcript.
let num_segments = state for segment in state.as_iter() {
.full_n_segments()
.expect("failed to get number of segments");
for i in 0..num_segments {
// Get the transcribed text and timestamps for the current segment. // Get the transcribed text and timestamps for the current segment.
let segment = state let start_timestamp = segment.start_timestamp();
.full_get_segment_text(i) let end_timestamp = segment.end_timestamp();
.expect("failed to get segment");
let start_timestamp = state
.full_get_segment_t0(i)
.expect("failed to get start timestamp");
let end_timestamp = state
.full_get_segment_t1(i)
.expect("failed to get end timestamp");
let first_token_dtw_ts = if let Ok(token_count) = state.full_n_tokens(i) { let first_token_dtw_ts = if segment.n_tokens() > 0 {
if token_count > 0 { if let Some(token) = segment.get_token(0) {
if let Ok(token_data) = state.full_get_token_data(i, 0) { token.token_data().map_or(0, |token| token.t_dtw)
token_data.t_dtw
} else {
-1i64
}
} else { } else {
-1i64 -1i64
} }