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Adjust "process_commands" and "Command"

This commit is contained in:
Viktor Lazarev 2019-08-28 19:14:36 +02:00 committed by mitchmindtree
parent 28cf3fee43
commit dd418c08ae
1 changed files with 23 additions and 62 deletions
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85
src/host/wasapi/stream.rs
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@ -67,10 +67,8 @@ struct RunContext {
}
enum Command {
NewStream(StreamInner),
DestroyStream(StreamId),
PlayStream(StreamId),
PauseStream(StreamId),
PlayStream,
PauseStream,
}
enum AudioClientFlow {
@ -575,75 +573,38 @@ fn format_to_waveformatextensible(format: &Format) -> Option<mmreg::WAVEFORMATEX
}
// Process any pending commands that are queued within the `RunContext`.
fn process_commands(
run_context: &mut RunContext,
callback: &mut dyn FnMut(StreamId, StreamData),
) {
fn process_commands(run_context: &mut RunContext) -> Result<(), StreamError> {
// Process the pending commands.
for command in run_context.commands.try_iter() {
match command {
Command::NewStream(stream_inner) => {
let event = stream_inner.event;
run_context.stream.push(stream_inner);
run_context.handles.push(event);
},
Command::DestroyStream(stream_id) => {
match run_context.stream.iter().position(|s| s.id == stream_id) {
None => continue,
Some(p) => {
run_context.handles.remove(p + 1);
run_context.stream.remove(p);
},
}
},
Command::PlayStream(stream_id) => {
match run_context.stream.iter().position(|s| s.id == stream_id) {
None => continue,
Some(p) => {
if !run_context.stream[p].playing {
let hresult = unsafe {
(*run_context.stream[p].audio_client).Start()
};
match stream_error_from_hresult(hresult) {
Ok(()) => {
run_context.stream[p].playing = true;
}
Err(err) => {
callback(stream_id, Err(err.into()));
run_context.handles.remove(p + 1);
run_context.stream.remove(p);
}
}
}
Command::PlayStream => {
if !run_context.stream.playing {
let hresult = unsafe {
(*run_context.stream.audio_client).Start()
};
if let Err(err) = stream_error_from_hresult(hresult) {
return Err(err);
}
run_context.stream.playing = true;
}
},
Command::PauseStream(stream_id) => {
match run_context.stream.iter().position(|s| s.id == stream_id) {
None => continue,
Some(p) => {
if run_context.stream[p].playing {
let hresult = unsafe {
(*run_context.stream[p].audio_client).Stop()
};
match stream_error_from_hresult(hresult) {
Ok(()) => {
run_context.stream[p].playing = false;
}
Err(err) => {
callback(stream_id, Err(err.into()));
run_context.handles.remove(p + 1);
run_context.stream.remove(p);
}
}
}
},
Command::PauseStream => {
if run_context.stream.playing {
let hresult = unsafe {
(*run_context.stream.audio_client).Stop()
};
if let Err(err) = stream_error_from_hresult(hresult) {
return Err(err);
}
run_context.stream.playing = false;
}
},
}
}
}
Ok(())
}
// Wait for any of the given handles to be signalled.
//
// Returns the index of the `handle` that was signalled, or an `Err` if