-
Notifications
You must be signed in to change notification settings - Fork 54
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Auto merge of #321 - ferjm:mediaelementsourcenode, r=Manishearth
MediaElementAudioSourceNode
- Loading branch information
Showing
25 changed files
with
611 additions
and
80 deletions.
There are no files selected for viewing
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| use block::{Block, Chunk, FRAMES_PER_BLOCK}; | ||
| use node::{AudioNodeEngine, AudioNodeType, BlockInfo, ChannelInfo}; | ||
| use player::audio::AudioRenderer; | ||
| use std::collections::hash_map::Entry; | ||
| use std::collections::HashMap; | ||
| use std::sync::mpsc::Sender; | ||
| use std::sync::{Arc, Mutex}; | ||
|
|
||
| #[derive(Debug, Clone)] | ||
| pub enum MediaElementSourceNodeMessage { | ||
| GetAudioRenderer(Sender<Arc<Mutex<dyn AudioRenderer>>>), | ||
| } | ||
|
|
||
| #[derive(AudioNodeCommon)] | ||
| pub(crate) struct MediaElementSourceNode { | ||
| channel_info: ChannelInfo, | ||
| renderer: Arc<Mutex<dyn AudioRenderer>>, | ||
| buffers: Arc<Mutex<Vec<Vec<f32>>>>, | ||
| playback_offset: usize, | ||
| } | ||
|
|
||
| impl MediaElementSourceNode { | ||
| pub fn new(channel_info: ChannelInfo) -> Self { | ||
| let buffers = Arc::new(Mutex::new(Vec::new())); | ||
| let renderer = Arc::new(Mutex::new(MediaElementSourceNodeRenderer::new( | ||
| buffers.clone(), | ||
| ))); | ||
| Self { | ||
| channel_info, | ||
| renderer, | ||
| buffers, | ||
| playback_offset: 0, | ||
| } | ||
| } | ||
|
|
||
| pub fn handle_message(&mut self, message: MediaElementSourceNodeMessage, _: f32) { | ||
| match message { | ||
| MediaElementSourceNodeMessage::GetAudioRenderer(sender) => { | ||
| let _ = sender.send(self.renderer.clone()); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl AudioNodeEngine for MediaElementSourceNode { | ||
| fn node_type(&self) -> AudioNodeType { | ||
| AudioNodeType::MediaElementSourceNode | ||
| } | ||
|
|
||
| fn process(&mut self, mut inputs: Chunk, _info: &BlockInfo) -> Chunk { | ||
| debug_assert!(inputs.len() == 0); | ||
|
|
||
| let buffers = self.buffers.lock().unwrap(); | ||
| let chans = buffers.len() as u8; | ||
|
|
||
| if chans == 0 { | ||
| inputs.blocks.push(Default::default()); | ||
| return inputs; | ||
| } | ||
|
|
||
| let len = buffers[0].len(); | ||
|
|
||
| let frames_per_block = FRAMES_PER_BLOCK.0 as usize; | ||
| let samples_to_copy = if self.playback_offset + frames_per_block > len { | ||
| len - self.playback_offset | ||
| } else { | ||
| frames_per_block | ||
| }; | ||
| let next_offset = self.playback_offset + samples_to_copy; | ||
| if samples_to_copy == FRAMES_PER_BLOCK.0 as usize { | ||
| // copy entire chan | ||
| let mut block = Block::empty(); | ||
| for chan in 0..chans { | ||
| block.push_chan(&buffers[chan as usize][self.playback_offset..next_offset]); | ||
| } | ||
| inputs.blocks.push(block) | ||
| } else { | ||
| // silent fill and copy | ||
| let mut block = Block::default(); | ||
| block.repeat(chans); | ||
| block.explicit_repeat(); | ||
| for chan in 0..chans { | ||
| let data = block.data_chan_mut(chan); | ||
| let (_, data) = data.split_at_mut(0); | ||
| let (data, _) = data.split_at_mut(samples_to_copy); | ||
| data.copy_from_slice(&buffers[chan as usize][self.playback_offset..next_offset]); | ||
| } | ||
| inputs.blocks.push(block) | ||
| } | ||
|
|
||
| self.playback_offset = next_offset; | ||
|
|
||
| inputs | ||
| } | ||
|
|
||
| fn input_count(&self) -> u32 { | ||
| 0 | ||
| } | ||
|
|
||
| make_message_handler!(MediaElementSourceNode: handle_message); | ||
| } | ||
|
|
||
| struct MediaElementSourceNodeRenderer { | ||
| buffers: Arc<Mutex<Vec<Vec<f32>>>>, | ||
| channels: HashMap<u32, usize>, | ||
| } | ||
|
|
||
| impl MediaElementSourceNodeRenderer { | ||
| pub fn new(buffers: Arc<Mutex<Vec<Vec<f32>>>>) -> Self { | ||
| Self { | ||
| buffers, | ||
| channels: HashMap::new(), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl AudioRenderer for MediaElementSourceNodeRenderer { | ||
| fn render(&mut self, sample: Box<dyn AsRef<[f32]>>, channel_pos: u32) { | ||
| let channel = match self.channels.entry(channel_pos) { | ||
| Entry::Occupied(entry) => *entry.get(), | ||
| Entry::Vacant(entry) => { | ||
| let mut buffers = self.buffers.lock().unwrap(); | ||
| let len = buffers.len(); | ||
| buffers.resize(len + 1, Vec::new()); | ||
| *entry.insert(buffers.len()) | ||
| } | ||
| }; | ||
| self.buffers.lock().unwrap()[(channel - 1) as usize].extend_from_slice((*sample).as_ref()); | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.