videoplayer: add a hack to play AAC with SBR properly

[nihav-player.git] / videoplayer / src / audiodec.rs

diff --git a/videoplayer/src/audiodec.rs b/videoplayer/src/audiodec.rs
index bddec5745a6dce2df1eae5cfffb84e8d6fde039b..ad906f0f997f709bf9a4e97ee04629d2366a0f19 100644 (file)
--- a/videoplayer/src/audiodec.rs
+++ b/videoplayer/src/audiodec.rs
@@ -155,20 +155,21 @@ fn dummy_audio_thread(aprecv: Receiver<PktSendEvent>) -> JoinHandle<()> {
 
 type AudioPlaybackType = Option<AudioDevice<AudioOutput>>;
 
-fn start_audio_decoding(asystem: &AudioSubsystem, ainfo: NAAudioInfo, mut audio_dec: DecoderStuff, aprecv: Receiver<PktSendEvent>) -> (AudioPlaybackType, JoinHandle<()>) {
+fn start_audio_decoding(asystem: &AudioSubsystem, ainfo: NAAudioInfo, sbr_hack: bool, mut audio_dec: DecoderStuff, aprecv: Receiver<PktSendEvent>) -> (AudioPlaybackType, JoinHandle<()>) {
     let ch = ainfo.channels.max(2);
+    let sample_rate = if !sbr_hack { ainfo.sample_rate } else { ainfo.sample_rate * 2 };
     let desired_spec = AudioSpecDesired {
-        freq:       Some(ainfo.sample_rate as i32),
+        freq:       Some(sample_rate as i32),
         channels:   Some(ch),
         samples:    None
     };
     let dst_info = NAAudioInfo {
-            sample_rate:    ainfo.sample_rate,
+            sample_rate:    sample_rate,
             channels:       ch,
             format:         SND_S16_FORMAT,
             block_len:      0,
         };
-    let queue = Arc::new(Mutex::new(AudioQueue::new(ainfo.sample_rate as usize, ch as usize)));
+    let queue = Arc::new(Mutex::new(AudioQueue::new(sample_rate as usize, ch as usize)));
     let qclone = queue.clone();
     let ret = asystem.open_playback(None, &desired_spec, |_spec| {
             AudioOutput {
@@ -203,6 +204,9 @@ fn start_audio_decoding(asystem: &AudioSubsystem, ainfo: NAAudioInfo, mut audio_
                                 let buf = frm.get_buffer();
                                 if let Some(pts) = frm.get_pts() {
                                     samplepos = NATimeInfo::ts_to_time(pts, u64::from(dst_info.sample_rate), frm.ts.tb_num, frm.ts.tb_den) as usize;
+                                    if sbr_hack {
+                                        samplepos >>= 2;
+                                    }
                                 }
                                 samplepos += buf.get_audio_length();
                                 if let Ok(out_buf) = convert_audio_frame(&buf, &dst_info, &dst_chmap) {
@@ -260,10 +264,10 @@ pub struct AudioControl {
 }
 
 impl AudioControl {
-    pub fn new(audio_dec: Option<DecoderStuff>, ainfo: Option<NAAudioInfo>, asystem: &AudioSubsystem) -> Self {
+    pub fn new(audio_dec: Option<DecoderStuff>, ainfo: Option<NAAudioInfo>, sbr_hack: bool, asystem: &AudioSubsystem) -> Self {
         let (apsend, aprecv) = std::sync::mpsc::sync_channel::<PktSendEvent>(20);
         let (adevice, athread) = if let Some(audio_dec) = audio_dec {
-                start_audio_decoding(asystem, ainfo.expect("audio info should be present"), audio_dec, aprecv)
+                start_audio_decoding(asystem, ainfo.expect("audio info should be present"), sbr_hack, audio_dec, aprecv)
             } else {
                 (None, dummy_audio_thread(aprecv))
             };