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Add extra latency to microphone playback to reduce clipping.

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This commit is contained in:
Saracen
2018-07-31 04:46:29 +01:00
parent d91183be52
commit 59b703c4f8
2 changed files with 3 additions and 1 deletions
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2
servers/audio/audio_stream.cpp
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@@ -138,7 +138,7 @@ void AudioStreamPlaybackMicrophone::_mix_internal(AudioFrame *p_buffer, int p_fr
unsigned int input_size = AudioDriver::get_singleton()->get_input_size(); unsigned int input_size = AudioDriver::get_singleton()->get_input_size();
// p_frames is multipled by two since an AudioFrame is stereo // p_frames is multipled by two since an AudioFrame is stereo
if ((p_frames * 2) > input_size) { if ((p_frames + MICROPHONE_PLAYBACK_DELAY * 2) > input_size) {
for (int i = 0; i < p_frames; i++) { for (int i = 0; i < p_frames; i++) {
p_buffer[i] = AudioFrame(0.0f, 0.0f); p_buffer[i] = AudioFrame(0.0f, 0.0f);
} }

2
servers/audio/audio_stream.h
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@@ -122,6 +122,8 @@ class AudioStreamPlaybackMicrophone : public AudioStreamPlaybackResampled {
GDCLASS(AudioStreamPlaybackMicrophone, AudioStreamPlayback) GDCLASS(AudioStreamPlaybackMicrophone, AudioStreamPlayback)
friend class AudioStreamMicrophone; friend class AudioStreamMicrophone;
const int MICROPHONE_PLAYBACK_DELAY = 256;
bool active; bool active;
unsigned int input_ofs; unsigned int input_ofs;