GameCult/Ratatoskr-receiver
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Stamp live audio with the receive clock

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The producer's presentation ticks start at zero per session and sit in its
clock domain; handed to the mixer they read as ever-growing drift, and OBS
kept adding buffering and restarting the source's audio for lagging.
OBS's own network sources stamp with the receive clock; so does this one.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
Meta Vens 2026-09-11 02:36:35 +02:00
commit d11f5331fe
1 changed files with 6 additions and 1 deletions
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7
plugin/src/ratatoskr_source.c
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@ -166,8 +166,13 @@ static void create_video_child(struct ratatoskr_source *ctx)
obs_source_add_active_child(ctx->source, ctx->video_child);
}
/* Live audio is stamped with the receive clock, as OBS's own network sources
* do. The producer's presentation ticks start at zero per session and sit in
* its clock domain; handing them to the mixer read as ever-growing drift and
* OBS kept adding buffering, then restarted the source's audio for lagging. */
static void output_audio(struct ratatoskr_source *ctx, const uint8_t *pcm, size_t len, int64_t pts_ns)
{
UNUSED_PARAMETER(pts_ns);
if (ctx->audio_channels == 0 || ctx->audio_sample_rate == 0)
return;
size_t frame_bytes = sizeof(float) * ctx->audio_channels;
@ -179,7 +184,7 @@ static void output_audio(struct ratatoskr_source *ctx, const uint8_t *pcm, size_
audio.samples_per_sec = ctx->audio_sample_rate;
audio.format = AUDIO_FORMAT_FLOAT;
audio.speakers = ctx->audio_channels == 1 ? SPEAKERS_MONO : SPEAKERS_STEREO;
audio.timestamp = pts_ns > 0 ? (uint64_t)pts_ns : os_gettime_ns();
audio.timestamp = os_gettime_ns();
obs_source_output_audio(ctx->source, &audio);
}