From 7cedad8e5b8e15a19951ed196b3e7e2f3c95ae8e Mon Sep 17 00:00:00 2001
From: Nathan Perry <avaglir@gmail.com>
Date: Sun, 17 Feb 2019 23:02:16 -0500
Subject: initial mp3 attempt

---
 src/audio/play_queue.rs | 65 ++++++++++++++++++++++++++++++++++++++++++++-----
 src/audio/ytdl.rs       | 28 ++++++++++++++++-----
 2 files changed, 81 insertions(+), 12 deletions(-)

(limited to 'src/audio')

diff --git a/src/audio/play_queue.rs b/src/audio/play_queue.rs
index 119b8c5..4bb6ade 100644
--- a/src/audio/play_queue.rs
+++ b/src/audio/play_queue.rs
@@ -1,13 +1,20 @@
 use std::{
     collections::VecDeque,
-    io::Cursor,
+    io::{self, Cursor},
+    iter,
+    process::{
+        Command,
+        Stdio,
+    },
     sync::{Arc, RwLock},
     thread,
     time::Duration,
 };
 
+use byteorder::{ByteOrder, NativeEndian};
 use either::{Left, Right};
-use flate2::bufread::DeflateDecoder;
+use itertools::Itertools;
+use lame_sys;
 use serenity::{
     prelude::*,
     voice,
@@ -94,9 +101,9 @@ impl PlayQueue {
                 }
 
                 let mut queue = queue_lck.write().unwrap();
-                let item = queue.queue.pop_front().unwrap();
+                let mut item = queue.queue.pop_front().unwrap();
 
-                let src = match item.data {
+                let src = match &mut item.data {
                     Left(ref url) => {
                         match ytdl(url, item.start, item.end) {
                             Ok(src) => src,
@@ -107,8 +114,54 @@ impl PlayQueue {
                             }
                         }
                     },
-                    Right(ref vec) => {
-                        voice::pcm(true, DeflateDecoder::new(Cursor::new(vec.clone())))
+                    Right(ref mut v) => {
+
+//                        let out = unsafe {
+//                            let hip_t = lame_sys::hip_decode_init();
+//
+//                            let mut pcm_l = vec![0; 5 * 1024 * 1024 / 2];
+//                            let mut pcm_r = vec![0; 5 * 1024 * 1024 / 2];
+//
+//                            let count = lame_sys::hip_decode(hip_t,
+//                                                 v.as_mut_ptr(),
+//                                                 v.len(),
+//                                                 pcm_l.as_mut_ptr(),
+//                                                 pcm_r.as_mut_ptr());
+//
+//                            lame_sys::hip_decode_exit(hip_t);
+//
+//                            pcm_l.into_iter()
+//                                .interleave(pcm_r.into_iter())
+//                                .flat_map(|x| {
+//                                    let mut b = vec![0u8; 2];
+//                                    NativeEndian::write_i16(&mut b, x);
+//
+//                                    b.into_iter()
+//                                })
+//                                .collect::<Vec<u8>>()
+//                        };
+
+                        let mut out = Command::new("lame")
+                            .args(&[
+                                "--decode", "-t",
+                                "-", "-",
+                            ])
+                            .stdin(Stdio::piped())
+                            .stdout(Stdio::piped())
+                            .stderr(Stdio::piped())
+                            .spawn()
+                            .unwrap();
+
+                        io::copy(&mut Cursor::new(v), &mut out.stdin.as_mut().unwrap());
+                        let result = voice::pcm(true,  Cursor::new("abc"));
+
+//                        out.stdout.as_mut().unwrap()
+
+                        let status = out.wait_with_output().unwrap();
+                        println!("{}", status.status);
+                        println!("{}", String::from_utf8(status.stderr).unwrap());
+
+                        result
                     }
                 };
 
diff --git a/src/audio/ytdl.rs b/src/audio/ytdl.rs
index e88d8f8..7333c18 100644
--- a/src/audio/ytdl.rs
+++ b/src/audio/ytdl.rs
@@ -46,6 +46,7 @@ pub(crate) trait CodecInfo {
 
 pub(crate) struct Pcm {}
 pub(crate) struct Opus {}
+pub(crate) struct Mp3 {}
 
 impl CodecInfo for Pcm {
     #[inline]
@@ -79,6 +80,22 @@ impl CodecInfo for Opus {
     }
 }
 
+impl CodecInfo for Mp3 {
+    #[inline]
+    fn ffmpeg_opts() -> &'static[&'static str] {
+        lazy_static! {
+            static ref OPTS: Vec<&'static str> = vec! [
+                "-f", "aac",
+                "-acodec", "libfdk_aac",
+                "-b:a", "96k",
+                "-sample_fmt", "s16",
+            ];
+        }
+
+        &*OPTS
+    }
+}
+
 pub fn ytdl_url(uri: &str) -> Result<String> {
     let args = [
         "-f",
@@ -113,7 +130,7 @@ pub fn ytdl_url(uri: &str) -> Result<String> {
     }
 }
 
-pub(crate) fn ffmpeg_dl<T: CodecInfo>(uri: &str, start: Option<Duration>, end: Option<Duration>, size_limit: Option<usize>) -> Result<Box<dyn Read + Send>> {
+pub(crate) fn ffmpeg_dl<T: CodecInfo>(uri: &str, start: Option<Duration>, end: Option<Duration>, size_limit: Option<usize>) -> Result<Child> {
     let start = start.unwrap_or(Duration::zero());
     let start_str = format!("{:02}:{:02}:{:02}", start.num_hours(), start.num_minutes() % 60, start.num_seconds() % 60);
 
@@ -146,20 +163,19 @@ pub(crate) fn ffmpeg_dl<T: CodecInfo>(uri: &str, start: Option<Duration>, end: O
 
     debug!("ffmpeg -i \"{}\" {}", uri, opts.join(" "));
 
-    let command = Command::new("ffmpeg")
+    Command::new("ffmpeg")
         .arg("-i")
         .arg(uri)
         .args(opts)
         .stderr(Stdio::piped())
         .stdin(Stdio::null())
         .stdout(Stdio::piped())
-        .spawn()?;
-
-    Ok(Box::new(ChildContainer(command)))
+        .spawn()
+        .map_err(|e| e.into())
 }
 
 pub fn ytdl(uri: &str, start: Option<Duration>, end: Option<Duration>) -> Result<Box<AudioSource>> {
     let youtube_uri = ytdl_url(uri)?;
     let command = ffmpeg_dl::<Pcm>(&youtube_uri, start, end, None)?;
-    Ok(pcm(true, command))
+    Ok(pcm(true, command.stdout.unwrap()))
 }
-- 
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