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PipeWire: Try improving mono streams.

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David Reid
2026-01-26 14:04:12 +10:00
parent 18df387a84
commit 28de8d8947
1 changed files with 15 additions and 1 deletions
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miniaudio.h
+15 -1
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@@ -32658,6 +32658,7 @@ static ma_result ma_device_init_internal__pipewire(ma_device* pDevice, ma_contex
struct ma_pw_properties* pProperties; struct ma_pw_properties* pProperties;
const struct ma_pw_stream_events* pStreamEvents; const struct ma_pw_stream_events* pStreamEvents;
enum ma_spa_audio_format formatPA; enum ma_spa_audio_format formatPA;
ma_uint32 channels;
struct ma_spa_pod_audio_info_raw podAudioInfo; struct ma_spa_pod_audio_info_raw podAudioInfo;
const struct ma_spa_pod* pConnectionParameters[1]; const struct ma_spa_pod* pConnectionParameters[1];
enum ma_pw_stream_flags streamFlags; enum ma_pw_stream_flags streamFlags;
@@ -32710,7 +32711,20 @@ static ma_result ma_device_init_internal__pipewire(ma_device* pDevice, ma_contex
} }
} }
podAudioInfo = ma_spa_pod_audio_info_raw_init(formatPA, pDescriptor->channels, pDescriptor->sampleRate); /*
An annoying detail here. When a single channel is requested it will be output to the FL channel and not distributed
to additional channels. This means with headphones the sound will only come out of the left side. But then there are
times when an app would literally want to output to only a single channel.
The way I'm going to deal with this is when a single channel is requested and the `MA_CHANNEL_MONO` channel position
is explicitly listed in the channel map, we'll request the "native" channel count.
*/
channels = pDescriptor->channels;
if (channels == 1 && (pDescriptor->channelMap[0] == MA_CHANNEL_NONE || pDescriptor->channelMap[0] == MA_CHANNEL_MONO)) {
channels = 0;
}
podAudioInfo = ma_spa_pod_audio_info_raw_init(formatPA, channels, pDescriptor->sampleRate);
pConnectionParameters[0] = (struct ma_spa_pod*)&podAudioInfo; pConnectionParameters[0] = (struct ma_spa_pod*)&podAudioInfo;