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pipewiresink: set a default channel map if the number of channels is fixed

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This allows remaping streams using pipewiresink to match the channel layout
of the target device
This commit is contained in:
George Kiagiadakis 2022-02-03 15:08:57 +02:00
parent bdd407fe66
commit ee2e6412d3
1 changed files with 41 additions and 1 deletions
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42
src/gst/gstpipewireformat.c
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@ -445,6 +445,44 @@ handle_video_fields (ConvertData *d)
return TRUE;
}
static void
set_default_channels (struct spa_pod_builder *b, uint32_t channels)
{
uint32_t position[SPA_AUDIO_MAX_CHANNELS] = {0};
gboolean ok = TRUE;
switch (channels) {
case 8:
position[6] = SPA_AUDIO_CHANNEL_SL;
position[7] = SPA_AUDIO_CHANNEL_SR;
SPA_FALLTHROUGH
case 6:
position[5] = SPA_AUDIO_CHANNEL_LFE;
SPA_FALLTHROUGH
case 5:
position[4] = SPA_AUDIO_CHANNEL_FC;
SPA_FALLTHROUGH
case 4:
position[2] = SPA_AUDIO_CHANNEL_RL;
position[3] = SPA_AUDIO_CHANNEL_RR;
SPA_FALLTHROUGH
case 2:
position[0] = SPA_AUDIO_CHANNEL_FL;
position[1] = SPA_AUDIO_CHANNEL_FR;
break;
case 1:
position[0] = SPA_AUDIO_CHANNEL_MONO;
break;
default:
ok = FALSE;
break;
}
if (ok)
spa_pod_builder_add (b, SPA_FORMAT_AUDIO_position,
SPA_POD_Array(sizeof(uint32_t), SPA_TYPE_Id, channels, position), 0);
}
static gboolean
handle_audio_fields (ConvertData *d)
{
@ -538,8 +576,10 @@ handle_audio_fields (ConvertData *d)
}
if (i > 0) {
choice = spa_pod_builder_pop(&d->b, &f);
if (i == 1)
if (i == 1) {
choice->body.type = SPA_CHOICE_None;
set_default_channels (&d->b, v);
}
}
}
return TRUE;