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combine: determine sample parameters of combined sink from underlying sinks

Browse source 
http://pulseaudio.org/ticket/521
This commit is contained in:
Maarten Bosmans 2009-08-15 01:35:53 +02:00 • committed by Lennart Poettering
parent 1eeddd84d2
commit 61105df13b
1 changed files with 49 additions and 0 deletions
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49
src/modules/module-combine.c
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@ -1152,6 +1152,55 @@ int pa__init(pa_module*m) {
ss = m->core->default_sample_spec;
map = m->core->default_channel_map;
/* Check the specified slave sinks for sample_spec and channel_map to use for the combined sink */
if (!u->automatic) {
const char*split_state = NULL;
char *n = NULL;
pa_sample_spec slaves_spec;
pa_channel_map slaves_map;
pa_bool_t is_first_slave = TRUE;
while ((n = pa_split(slaves, ",", &split_state))) {
pa_sink *slave_sink;
if (!(slave_sink = pa_namereg_get(m->core, n, PA_NAMEREG_SINK))) {
pa_log("Invalid slave sink '%s'", n);
pa_xfree(n);
goto fail;
}
pa_xfree(n);
if (is_first_slave) {
slaves_spec = slave_sink->sample_spec;
slaves_map = slave_sink->channel_map;
is_first_slave = FALSE;
} else {
if (slaves_spec.format != slave_sink->sample_spec.format)
slaves_spec.format = PA_SAMPLE_INVALID;
if (slaves_spec.rate < slave_sink->sample_spec.rate)
slaves_spec.rate = slave_sink->sample_spec.rate;
if (!pa_channel_map_equal(&slaves_map, &slave_sink->channel_map))
slaves_spec.channels = 0;
}
}
if (!is_first_slave) {
if (slaves_spec.format != PA_SAMPLE_INVALID)
ss.format = slaves_spec.format;
ss.rate = slaves_spec.rate;
if (slaves_spec.channels > 0) {
map = slaves_map;
ss.channels = slaves_map.channels;
}
}
}
if ((pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0)) {
pa_log("Invalid sample specification.");
goto fail;