Put CommonSampleRates to some use and clean up backend imports

playback/src/audio_backend/alsa.rs

@@ -1,11 +1,18 @@
 use super::{Open, Sink, SinkAsBytes, SinkError, SinkResult};
-use crate::config::{AudioFormat, SampleRate};
-use crate::convert::Converter;
-use crate::decoder::AudioPacket;
-use crate::{CommonSampleRates, NUM_CHANNELS, SAMPLE_RATE as DECODER_SAMPLE_RATE};
-use alsa::device_name::HintIter;
-use alsa::pcm::{Access, Format, Frames, HwParams, PCM};
-use alsa::{Direction, ValueOr};
+
+use crate::{
+    config::{AudioFormat, SampleRate},
+    convert::Converter,
+    decoder::AudioPacket,
+    CommonSampleRates, NUM_CHANNELS, SAMPLE_RATE as DECODER_SAMPLE_RATE,
+};
+
+use alsa::{
+    device_name::HintIter,
+    pcm::{Access, Format, Frames, HwParams, PCM},
+    Direction, ValueOr,
+};
+
 use std::process::exit;
 use thiserror::Error;
 
@@ -204,7 +211,12 @@ impl Open for AlsaSink {
 
         let latency_scale_factor = DECODER_SAMPLE_RATE as f64 / sample_rate as f64;
 
-        info!("Using AlsaSink with format: {format:?}, sample rate: {sample_rate}");
+        info!(
+            "Using AlsaSink with format: {format:?}, sample rate: {}",
+            CommonSampleRates::try_from(sample_rate)
+                .unwrap_or_default()
+                .to_string()
+        );
 
         Self {
             pcm: None,

playback/src/audio_backend/gstreamer.rs

@@ -13,7 +13,9 @@ use std::sync::Arc;
 
 use super::{Open, Sink, SinkAsBytes, SinkError, SinkResult};
 
-use crate::{config::AudioFormat, convert::Converter, decoder::AudioPacket, NUM_CHANNELS};
+use crate::{
+    config::AudioFormat, convert::Converter, decoder::AudioPacket, CommonSampleRates, NUM_CHANNELS,
+};
 
 pub struct GstreamerSink {
     appsrc: gst_app::AppSrc,
@@ -25,7 +27,13 @@ pub struct GstreamerSink {
 
 impl Open for GstreamerSink {
     fn open(device: Option<String>, format: AudioFormat, sample_rate: u32) -> Self {
-        info!("Using GStreamer sink with format: {format:?}, sample rate: {sample_rate}");
+        info!(
+            "Using GstreamerSink with format: {format:?}, sample rate: {}",
+            CommonSampleRates::try_from(sample_rate)
+                .unwrap_or_default()
+                .to_string()
+        );
+
         gst::init().expect("failed to init GStreamer!");
 
         let gst_format = match format {

playback/src/audio_backend/jackaudio.rs

@@ -1,11 +1,13 @@
 use super::{Open, Sink, SinkError, SinkResult};
-use crate::config::AudioFormat;
-use crate::convert::Converter;
-use crate::decoder::AudioPacket;
-use crate::NUM_CHANNELS;
+
+use crate::{
+    config::AudioFormat, convert::Converter, decoder::AudioPacket, CommonSampleRates, NUM_CHANNELS,
+};
+
 use jack::{
     AsyncClient, AudioOut, Client, ClientOptions, Control, Port, ProcessHandler, ProcessScope,
 };
+
 use std::sync::mpsc::{sync_channel, Receiver, SyncSender};
 
 pub struct JackSink {
@@ -42,9 +44,12 @@ impl Open for JackSink {
         if format != AudioFormat::F32 {
             warn!("JACK currently does not support {format:?} output");
         }
+
         info!(
-            "Using JACK sink with format {:?}, sample rate: {sample_rate}",
-            AudioFormat::F32
+            "Using JackSink with format: {format:?}, sample rate: {}",
+            CommonSampleRates::try_from(sample_rate)
+                .unwrap_or_default()
+                .to_string()
         );
 
         let client_name = client_name.unwrap_or_else(|| "librespot".to_string());

playback/src/audio_backend/pipe.rs

@@ -1,11 +1,12 @@
 use super::{Open, Sink, SinkAsBytes, SinkError, SinkResult};
-use crate::config::AudioFormat;
-use crate::convert::Converter;
-use crate::decoder::AudioPacket;
+use crate::{config::AudioFormat, convert::Converter, decoder::AudioPacket, CommonSampleRates};
+
+use std::{
+    fs::OpenOptions,
+    io::{self, Write},
+    process::exit,
+};
 
-use std::fs::OpenOptions;
-use std::io::{self, Write};
-use std::process::exit;
 use thiserror::Error;
 
 #[derive(Debug, Error)]
@@ -48,7 +49,12 @@ impl Open for StdoutSink {
             exit(0);
         }
 
-        info!("Using StdoutSink (pipe) with format: {format:?}, sample rate: {sample_rate}");
+        info!(
+            "Using StdoutSink with format: {format:?}, sample rate: {}",
+            CommonSampleRates::try_from(sample_rate)
+                .unwrap_or_default()
+                .to_string()
+        );
 
         Self {
             output: None,

playback/src/audio_backend/portaudio.rs

@@ -1,12 +1,15 @@
 use super::{Open, Sink, SinkError, SinkResult};
-use crate::config::AudioFormat;
-use crate::convert::Converter;
-use crate::decoder::AudioPacket;
-use crate::NUM_CHANNELS;
-use portaudio_rs::device::{get_default_output_index, DeviceIndex, DeviceInfo};
-use portaudio_rs::stream::*;
-use std::process::exit;
-use std::time::Duration;
+
+use crate::{
+    config::AudioFormat, convert::Converter, decoder::AudioPacket, CommonSampleRates, NUM_CHANNELS,
+};
+
+use portaudio_rs::{
+    device::{get_default_output_index, DeviceIndex, DeviceInfo},
+    stream::*,
+};
+
+use std::{process::exit, time::Duration};
 
 pub enum PortAudioSink<'a> {
     F32(
@@ -55,7 +58,12 @@ fn find_output(device: &str) -> Option<DeviceIndex> {
 
 impl<'a> Open for PortAudioSink<'a> {
     fn open(device: Option<String>, format: AudioFormat, sample_rate: u32) -> PortAudioSink<'a> {
-        info!("Using PortAudio sink with format: {format:?}, sample rate: {sample_rate}");
+        info!(
+            "Using PortAudioSink with format: {format:?}, sample rate: {}",
+            CommonSampleRates::try_from(sample_rate)
+                .unwrap_or_default()
+                .to_string()
+        );
 
         portaudio_rs::initialize().unwrap();
 

playback/src/audio_backend/pulseaudio.rs

@@ -1,8 +1,10 @@
 use super::{Open, Sink, SinkAsBytes, SinkError, SinkResult};
-use crate::config::AudioFormat;
-use crate::convert::Converter;
-use crate::decoder::AudioPacket;
-use crate::{NUM_CHANNELS, SAMPLE_RATE as DECODER_SAMPLE_RATE};
+
+use crate::{
+    config::AudioFormat, convert::Converter, decoder::AudioPacket, CommonSampleRates, NUM_CHANNELS,
+    SAMPLE_RATE as DECODER_SAMPLE_RATE,
+};
+
 use libpulse_binding::{self as pulse, error::PAErr, stream::Direction};
 use libpulse_simple_binding::Simple;
 use std::env;
@@ -76,7 +78,12 @@ impl Open for PulseAudioSink {
             format
         };
 
-        info!("Using PulseAudioSink with format: {format:?}, sample rate: {sample_rate}");
+        info!(
+            "Using PulseAudioSink with format: {format:?}, sample rate: {}",
+            CommonSampleRates::try_from(sample_rate)
+                .unwrap_or_default()
+                .to_string()
+        );
 
         let sample_spec = pulse::sample::Spec {
             format: format.into(),

playback/src/audio_backend/rodio.rs

@@ -1,15 +1,13 @@
-use std::process::exit;
-use std::thread;
-use std::time::Duration;
+use std::{process::exit, thread, time::Duration};
 
 use cpal::traits::{DeviceTrait, HostTrait};
 use thiserror::Error;
 
 use super::{Sink, SinkError, SinkResult};
-use crate::config::AudioFormat;
-use crate::convert::Converter;
-use crate::decoder::AudioPacket;
-use crate::NUM_CHANNELS;
+
+use crate::{
+    config::AudioFormat, convert::Converter, decoder::AudioPacket, CommonSampleRates, NUM_CHANNELS,
+};
 
 #[cfg(all(
     feature = "rodiojack-backend",
@@ -176,15 +174,18 @@ pub fn open(
     format: AudioFormat,
     sample_rate: u32,
 ) -> RodioSink {
-    info!(
-        "Using Rodio sink with format {format:?} and cpal host: {}",
-        host.id().name()
-    );
-
     if format != AudioFormat::S16 && format != AudioFormat::F32 {
         unimplemented!("Rodio currently only supports F32 and S16 formats");
     }
 
+    info!(
+        "Using RodioSink with format: {format:?}, sample rate: {}, and cpal host: {}",
+        CommonSampleRates::try_from(sample_rate)
+            .unwrap_or_default()
+            .to_string(),
+        host.id().name(),
+    );
+
     let (sink, stream) = create_sink(&host, device).unwrap();
 
     debug!("Rodio sink was created");

playback/src/audio_backend/sdl.rs

@@ -1,11 +1,12 @@
 use super::{Open, Sink, SinkError, SinkResult};
-use crate::config::AudioFormat;
-use crate::convert::Converter;
-use crate::decoder::AudioPacket;
-use crate::{NUM_CHANNELS, SAMPLE_RATE};
+
+use crate::{
+    config::AudioFormat, convert::Converter, decoder::AudioPacket, CommonSampleRates, NUM_CHANNELS,
+    SAMPLE_RATE,
+};
+
 use sdl2::audio::{AudioQueue, AudioSpecDesired};
-use std::thread;
-use std::time::Duration;
+use std::{thread, time::Duration};
 
 pub enum SdlSink {
     F32(AudioQueue<f32>),
@@ -15,7 +16,12 @@ pub enum SdlSink {
 
 impl Open for SdlSink {
     fn open(device: Option<String>, format: AudioFormat, sample_rate: u32) -> Self {
-        info!("Using SDL sink with format: {format:?}, sample rate: {sample_rate}");
+        info!(
+            "Using SdlSink with format: {format:?}, sample rate: {}",
+            CommonSampleRates::try_from(sample_rate)
+                .unwrap_or_default()
+                .to_string()
+        );
 
         if device.is_some() {
             warn!("SDL sink does not support specifying a device name");

playback/src/audio_backend/subprocess.rs

@@ -1,11 +1,13 @@
 use super::{Open, Sink, SinkAsBytes, SinkError, SinkResult};
-use crate::config::AudioFormat;
-use crate::convert::Converter;
-use crate::decoder::AudioPacket;
-use shell_words::split;
 
-use std::io::{ErrorKind, Write};
-use std::process::{exit, Child, Command, Stdio};
+use crate::{config::AudioFormat, convert::Converter, decoder::AudioPacket, CommonSampleRates};
+
+use std::{
+    io::{ErrorKind, Write},
+    process::{exit, Child, Command, Stdio},
+};
+
+use shell_words::split;
 use thiserror::Error;
 
 #[derive(Debug, Error)]
@@ -72,7 +74,12 @@ impl Open for SubprocessSink {
             exit(0);
         }
 
-        info!("Using SubprocessSink with format: {format:?}, sample rate: {sample_rate}");
+        info!(
+            "Using SubprocessSink with format: {format:?}, sample rate: {}",
+            CommonSampleRates::try_from(sample_rate)
+                .unwrap_or_default()
+                .to_string()
+        );
 
         Self {
             shell_command,

playback/src/lib.rs

@@ -28,13 +28,6 @@ pub const SAMPLES_PER_SECOND: u32 = SAMPLE_RATE * NUM_CHANNELS as u32;
 pub const PAGES_PER_MS: f64 = SAMPLE_RATE as f64 / 1000.0;
 pub const MS_PER_PAGE: f64 = 1000.0 / SAMPLE_RATE as f64;
 
-// not used by all backends
-#[allow(dead_code)]
-const COMMON_SAMPLE_RATES: [u32; 14] = [
-    8000, 11025, 16000, 22050, 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600,
-    768000,
-];
-
 pub fn db_to_ratio(db: f64) -> f64 {
     f64::powf(10.0, db / DB_VOLTAGE_RATIO)
 }
@@ -43,8 +36,6 @@ pub fn ratio_to_db(ratio: f64) -> f64 {
     ratio.log10() * DB_VOLTAGE_RATIO
 }
 
-// not used by all backends
-#[allow(dead_code)]
 #[derive(Copy, Clone, Debug, Default)]
 pub enum CommonSampleRates {
     #[default]