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add new virtual function may_move_to to sink inputs/source outputs to allow modules to forbid certain connections

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This commit is contained in:
Lennart Poettering 2008-10-21 18:24:45 +02:00
parent 309bc71f07
commit 358824b330
4 changed files with 73 additions and 22 deletions
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37
src/pulsecore/source-output.c
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@ -90,6 +90,7 @@ static void reset_callbacks(pa_source_output *o) {
o->kill = NULL;
o->get_latency = NULL;
o->state_change = NULL;
o->may_move_to = NULL;
}
/* Called from main context */
@ -593,6 +594,32 @@ pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
return o->resample_method;
}
pa_bool_t pa_source_output_may_move_to(pa_source_output *o, pa_source *dest) {
pa_source_output_assert_ref(o);
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_source_assert_ref(dest);
if (dest == o->source)
return TRUE;
if (o->flags & PA_SOURCE_OUTPUT_DONT_MOVE)
return FALSE;
if (o->direct_on_input)
return FALSE;
if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
pa_log_warn("Failed to move source output: too many outputs per source.");
return FALSE;
}
if (o->may_move_to)
if (!o->may_move_to(o, dest))
return FALSE;
return TRUE;
}
/* Called from main context */
int pa_source_output_move_to(pa_source_output *o, pa_source *dest) {
pa_source *origin;
@ -608,17 +635,9 @@ int pa_source_output_move_to(pa_source_output *o, pa_source *dest) {
if (dest == origin)
return 0;
if (o->flags & PA_SOURCE_OUTPUT_DONT_MOVE)
if (!pa_source_output_may_move_to(o, dest))
return -1;
if (o->direct_on_input)
return -1;
if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
pa_log_warn("Failed to move source output: too many outputs per source.");
return -1;
}
if (o->thread_info.resampler &&
pa_sample_spec_equal(&origin->sample_spec, &dest->sample_spec) &&
pa_channel_map_equal(&origin->channel_map, &dest->channel_map))