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Simplify AudioStreamPolyphonic

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* Make AudioStreamPolyphonic not requre a polling thread (simpler, faster)
* Improve error reporting in AudioStreamPlayer*::get_stream_playback() error reporting to improve usability.
This commit is contained in:
Juan Linietsky
2023-01-23 10:43:13 +01:00
parent eaf306e0b1
commit 4383b5ab1e
5 changed files with 16 additions and 37 deletions
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30
scene/resources/audio_stream_polyphonic.cpp
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@ -87,7 +87,6 @@ void AudioStreamPlaybackPolyphonic::stop() {
AudioServer::get_singleton()->lock();
}
s.active.clear();
s.finalizing.clear();
s.finish_request.clear();
s.stream_playback.unref();
s.stream.unref();
@ -145,7 +144,6 @@ int AudioStreamPlaybackPolyphonic::mix(AudioFrame *p_buffer, float p_rate_scale,
if (s.pending_play.is_set()) {
// Did not get the chance to play, was finalized too soon.
s.active.clear();
s.finalizing.set();
continue;
}
next_volume = 0;
@ -163,6 +161,8 @@ int AudioStreamPlaybackPolyphonic::mix(AudioFrame *p_buffer, float p_rate_scale,
int offset = 0;
float volume = prev_volume;
bool stream_done = false;
while (todo) {
int to_mix = MIN(todo, int(INTERNAL_BUFFER_LEN));
int mixed = s.stream_playback->mix(internal_buffer, s.pitch_scale, to_mix);
@ -175,7 +175,7 @@ int AudioStreamPlaybackPolyphonic::mix(AudioFrame *p_buffer, float p_rate_scale,
if (mixed < to_mix) {
// Stream is done.
s.active.clear();
s.finalizing.set();
stream_done = true;
break;
}
@ -183,34 +183,22 @@ int AudioStreamPlaybackPolyphonic::mix(AudioFrame *p_buffer, float p_rate_scale,
offset += to_mix;
}
if (stream_done) {
continue;
}
if (s.finish_request.is_set()) {
s.active.clear();
s.finalizing.set();
}
}
return p_frames;
}
void AudioStreamPlaybackPolyphonic::_check_finalized_streams() {
if (!active) {
return;
}
for (Stream &s : streams) {
if (!s.active.is_set() && s.finalizing.is_set()) {
s.stream_playback.unref();
s.stream.unref();
s.finalizing.clear();
s.finish_request.clear();
}
}
}
AudioStreamPlaybackPolyphonic::ID AudioStreamPlaybackPolyphonic::play_stream(const Ref<AudioStream> &p_stream, float p_from_offset, float p_volume_db, float p_pitch_scale) {
ERR_FAIL_COND_V(p_stream.is_null(), INVALID_ID);
for (uint32_t i = 0; i < streams.size(); i++) {
if (!streams[i].active.is_set() && !streams[i].finish_request.is_set() && !streams[i].finalizing.is_set()) {
if (!streams[i].active.is_set()) {
// Can use this stream, as it's not active.
streams[i].stream = p_stream;
streams[i].stream_playback = streams[i].stream->instantiate_playback();
@ -219,6 +207,7 @@ AudioStreamPlaybackPolyphonic::ID AudioStreamPlaybackPolyphonic::play_stream(con
streams[i].prev_volume_db = p_volume_db;
streams[i].pitch_scale = p_pitch_scale;
streams[i].id = id_counter++;
streams[i].finish_request.clear();
streams[i].pending_play.set();
streams[i].active.set();
return (ID(i) << INDEX_SHIFT) | ID(streams[i].id);
@ -282,5 +271,4 @@ void AudioStreamPlaybackPolyphonic::_bind_methods() {
}
AudioStreamPlaybackPolyphonic::AudioStreamPlaybackPolyphonic() {
SceneTree::get_singleton()->connect(SNAME("process_frame"), callable_mp(this, &AudioStreamPlaybackPolyphonic::_check_finalized_streams));
}