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|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "scopeguard"
|
||||||
|
version = "1.1.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "serde"
|
||||||
|
version = "1.0.130"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "f12d06de37cf59146fbdecab66aa99f9fe4f78722e3607577a5375d66bd0c913"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "shlex"
|
||||||
|
version = "0.1.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "7fdf1b9db47230893d76faad238fd6097fd6d6a9245cd7a4d90dbd639536bbd2"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "smallvec"
|
||||||
|
version = "1.7.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "1ecab6c735a6bb4139c0caafd0cc3635748bbb3acf4550e8138122099251f309"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "stdweb"
|
||||||
|
version = "0.1.3"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ef5430c8e36b713e13b48a9f709cc21e046723fe44ce34587b73a830203b533e"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "strsim"
|
||||||
|
version = "0.9.3"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "6446ced80d6c486436db5c078dde11a9f73d42b57fb273121e160b84f63d894c"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "syn"
|
||||||
|
version = "1.0.81"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "f2afee18b8beb5a596ecb4a2dce128c719b4ba399d34126b9e4396e3f9860966"
|
||||||
|
dependencies = [
|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"unicode-xid",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "thiserror"
|
||||||
|
version = "1.0.30"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "854babe52e4df1653706b98fcfc05843010039b406875930a70e4d9644e5c417"
|
||||||
|
dependencies = [
|
||||||
|
"thiserror-impl",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "thiserror-impl"
|
||||||
|
version = "1.0.30"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "aa32fd3f627f367fe16f893e2597ae3c05020f8bba2666a4e6ea73d377e5714b"
|
||||||
|
dependencies = [
|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"syn",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "toml"
|
||||||
|
version = "0.5.8"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "a31142970826733df8241ef35dc040ef98c679ab14d7c3e54d827099b3acecaa"
|
||||||
|
dependencies = [
|
||||||
|
"serde",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "unicode-xid"
|
||||||
|
version = "0.2.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "vcpkg"
|
||||||
|
version = "0.2.15"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "version_check"
|
||||||
|
version = "0.9.3"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "walkdir"
|
||||||
|
version = "2.3.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "808cf2735cd4b6866113f648b791c6adc5714537bc222d9347bb203386ffda56"
|
||||||
|
dependencies = [
|
||||||
|
"same-file",
|
||||||
|
"winapi",
|
||||||
|
"winapi-util",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasm-bindgen"
|
||||||
|
version = "0.2.78"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "632f73e236b219150ea279196e54e610f5dbafa5d61786303d4da54f84e47fce"
|
||||||
|
dependencies = [
|
||||||
|
"cfg-if 1.0.0",
|
||||||
|
"wasm-bindgen-macro",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasm-bindgen-backend"
|
||||||
|
version = "0.2.78"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "a317bf8f9fba2476b4b2c85ef4c4af8ff39c3c7f0cdfeed4f82c34a880aa837b"
|
||||||
|
dependencies = [
|
||||||
|
"bumpalo",
|
||||||
|
"lazy_static",
|
||||||
|
"log",
|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"syn",
|
||||||
|
"wasm-bindgen-shared",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasm-bindgen-macro"
|
||||||
|
version = "0.2.78"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "d56146e7c495528bf6587663bea13a8eb588d39b36b679d83972e1a2dbbdacf9"
|
||||||
|
dependencies = [
|
||||||
|
"quote",
|
||||||
|
"wasm-bindgen-macro-support",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasm-bindgen-macro-support"
|
||||||
|
version = "0.2.78"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "7803e0eea25835f8abdc585cd3021b3deb11543c6fe226dcd30b228857c5c5ab"
|
||||||
|
dependencies = [
|
||||||
|
"proc-macro2",
|
||||||
|
"quote",
|
||||||
|
"syn",
|
||||||
|
"wasm-bindgen-backend",
|
||||||
|
"wasm-bindgen-shared",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasm-bindgen-shared"
|
||||||
|
version = "0.2.78"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "0237232789cf037d5480773fe568aac745bfe2afbc11a863e97901780a6b47cc"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "web-sys"
|
||||||
|
version = "0.3.55"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "38eb105f1c59d9eaa6b5cdc92b859d85b926e82cb2e0945cd0c9259faa6fe9fb"
|
||||||
|
dependencies = [
|
||||||
|
"js-sys",
|
||||||
|
"wasm-bindgen",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi"
|
||||||
|
version = "0.3.9"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
||||||
|
dependencies = [
|
||||||
|
"winapi-i686-pc-windows-gnu",
|
||||||
|
"winapi-x86_64-pc-windows-gnu",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-i686-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-util"
|
||||||
|
version = "0.1.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
|
||||||
|
dependencies = [
|
||||||
|
"winapi",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-x86_64-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||||
|
|
@ -0,0 +1,11 @@
|
||||||
|
[package]
|
||||||
|
name = "music_player"
|
||||||
|
version = "0.1.0"
|
||||||
|
edition = "2021"
|
||||||
|
|
||||||
|
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||||
|
|
||||||
|
[dependencies]
|
||||||
|
anyhow = "1.0.45"
|
||||||
|
cpal = "0.13.4"
|
||||||
|
ffmpeg-next = "4.4.0"
|
||||||
|
|
@ -0,0 +1,192 @@
|
||||||
|
use std::{
|
||||||
|
sync::{
|
||||||
|
Arc,
|
||||||
|
Condvar,
|
||||||
|
Mutex,
|
||||||
|
},
|
||||||
|
thread,
|
||||||
|
};
|
||||||
|
|
||||||
|
use anyhow::{
|
||||||
|
anyhow,
|
||||||
|
//bail,
|
||||||
|
Result,
|
||||||
|
};
|
||||||
|
|
||||||
|
use cpal::traits::{
|
||||||
|
DeviceTrait,
|
||||||
|
HostTrait,
|
||||||
|
StreamTrait,
|
||||||
|
};
|
||||||
|
|
||||||
|
const SAMPLE_RATE: u32 = 48000;
|
||||||
|
|
||||||
|
#[derive (Default)]
|
||||||
|
struct PcmBuffers {
|
||||||
|
buffers: Vec <Vec <f32>>,
|
||||||
|
|
||||||
|
// Always points into the first buffer, if any
|
||||||
|
consumer_cursor: usize,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl PcmBuffers {
|
||||||
|
fn samples_available (&self) -> usize {
|
||||||
|
self.buffers.iter ().map (|b| b.len ()).sum::<usize> () - self.consumer_cursor
|
||||||
|
}
|
||||||
|
|
||||||
|
#[warn(unused_must_use)]
|
||||||
|
fn consume_exact (&mut self, data: &mut [f32]) -> bool {
|
||||||
|
if data.len () > self.samples_available () {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
for x in data {
|
||||||
|
if self.consumer_cursor >= self.buffers [0].len () {
|
||||||
|
self.buffers.remove (0);
|
||||||
|
self.consumer_cursor = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
*x = self.buffers [0][self.consumer_cursor];
|
||||||
|
self.consumer_cursor += 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
true
|
||||||
|
}
|
||||||
|
|
||||||
|
fn produce (&mut self, new_buffer: Vec <f32>) {
|
||||||
|
self.buffers.push (new_buffer);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn main () -> Result <()> {
|
||||||
|
let host = cpal::default_host ();
|
||||||
|
let device = host.default_output_device ().ok_or_else (|| anyhow! ("can't open cpal device"))?;
|
||||||
|
|
||||||
|
let mut supported_configs_range = device.supported_output_configs ()?
|
||||||
|
.filter (|c| c.channels () == 2 && c.sample_format () == cpal::SampleFormat::F32);
|
||||||
|
|
||||||
|
let config = supported_configs_range.next ()
|
||||||
|
.ok_or_else (|| anyhow! ("can't get stereo f32 audio output"))?
|
||||||
|
.with_sample_rate (cpal::SampleRate (SAMPLE_RATE))
|
||||||
|
.config ();
|
||||||
|
|
||||||
|
let pair = Arc::new ((Mutex::new (PcmBuffers::default ()), Condvar::new ()));
|
||||||
|
let pair2 = Arc::clone (&pair);
|
||||||
|
|
||||||
|
let thread_decoder = thread::spawn (move|| {
|
||||||
|
let (lock, cvar) = &*pair2;
|
||||||
|
|
||||||
|
let freq = 75;
|
||||||
|
let period = SAMPLE_RATE / freq;
|
||||||
|
|
||||||
|
let mut saw_counter = 0;
|
||||||
|
|
||||||
|
loop {
|
||||||
|
let mut buffer = vec! [0.0f32; 4000];
|
||||||
|
|
||||||
|
for x in &mut buffer {
|
||||||
|
*x = 0.25 * (saw_counter as f32 * 2.0 / period as f32 - 1.0);
|
||||||
|
|
||||||
|
saw_counter += 1;
|
||||||
|
if saw_counter >= period {
|
||||||
|
saw_counter = 0
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// eprintln! ("decode thread parking");
|
||||||
|
|
||||||
|
let mut pcm_buffers = cvar.wait_while (lock.lock ().unwrap (), |pcm_buffers| {
|
||||||
|
// eprintln! ("checking cvar...");
|
||||||
|
pcm_buffers.samples_available () >= 48_000
|
||||||
|
}).unwrap ();
|
||||||
|
|
||||||
|
// dbg! (pcm_buffers.samples_available ());
|
||||||
|
pcm_buffers.produce (buffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok::<_, anyhow::Error> (())
|
||||||
|
});
|
||||||
|
|
||||||
|
let stream = device.build_output_stream (
|
||||||
|
&config,
|
||||||
|
move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
|
||||||
|
let (lock, cvar) = &*pair;
|
||||||
|
|
||||||
|
let mut pcm_buffers = match lock.lock () {
|
||||||
|
Ok (x) => x,
|
||||||
|
Err (_) => return,
|
||||||
|
};
|
||||||
|
|
||||||
|
if ! pcm_buffers.consume_exact (data) {
|
||||||
|
eprintln! ("PCM buffer underflow");
|
||||||
|
}
|
||||||
|
|
||||||
|
if pcm_buffers.samples_available () < 24_000 {
|
||||||
|
cvar.notify_one ();
|
||||||
|
}
|
||||||
|
},
|
||||||
|
move |err| {
|
||||||
|
// react to errors here.
|
||||||
|
},
|
||||||
|
);
|
||||||
|
|
||||||
|
std::thread::sleep (std::time::Duration::from_millis (1_000));
|
||||||
|
|
||||||
|
thread_decoder.join ().unwrap ()?;
|
||||||
|
|
||||||
|
Ok (())
|
||||||
|
}
|
||||||
|
|
||||||
|
#[cfg (test)]
|
||||||
|
mod test {
|
||||||
|
use super::*;
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn decode () -> Result <()> {
|
||||||
|
ffmpeg_next::init ()?;
|
||||||
|
|
||||||
|
let mut input_ctx = ffmpeg_next::format::input (&"test.opus")?;
|
||||||
|
let stream = input_ctx
|
||||||
|
.streams ()
|
||||||
|
.best (ffmpeg_next::media::Type::Audio)
|
||||||
|
.ok_or_else (|| anyhow! ("can't find good audio stream"))?;
|
||||||
|
let best_stream_idx = stream.index ();
|
||||||
|
|
||||||
|
let mut decoder = stream.codec ().decoder ().audio ()?;
|
||||||
|
|
||||||
|
let mut packet_count = 0;
|
||||||
|
let mut frame_count = 0;
|
||||||
|
let mut frame = ffmpeg_next::util::frame::Audio::empty ();
|
||||||
|
|
||||||
|
let mut packets = input_ctx.packets ();
|
||||||
|
|
||||||
|
loop {
|
||||||
|
let mut did_anything = false;
|
||||||
|
|
||||||
|
while decoder.receive_frame (&mut frame).is_ok () {
|
||||||
|
frame_count += 1;
|
||||||
|
did_anything = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
match packets.next () {
|
||||||
|
None => {},
|
||||||
|
Some ((stream, packet)) => {
|
||||||
|
did_anything = true;
|
||||||
|
if stream.index () == best_stream_idx {
|
||||||
|
packet_count += 1;
|
||||||
|
decoder.send_packet (&packet)?;
|
||||||
|
}
|
||||||
|
},
|
||||||
|
}
|
||||||
|
|
||||||
|
if ! did_anything {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
assert_eq! (packet_count, 5496);
|
||||||
|
assert_eq! (frame_count, 5496);
|
||||||
|
|
||||||
|
Ok (())
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue