grant same API access to output buffer

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/block.cpp b/lib/block.cpp
index a4e2780..0521490 100644
--- a/lib/block.cpp
+++ b/lib/block.cpp
@@ -198,11 +198,16 @@ void Block::mark_done(void)
     (*this)->block->mark_done();
 }
 
-const SBuffer &Block::get_input_buffer(const size_t which_input)
+const SBuffer &Block::get_input_buffer(const size_t which_input) const
 {
     return (*this)->block->input_queues.front(which_input);
 }
 
+const SBuffer &Block::get_output_buffer(const size_t which_output) const
+{
+    return (*this)->block->output_queues.front(which_output);
+}
+
 void Block::post_output_buffer(const size_t which_output, const SBuffer &buffer)
 {
     (*this)->block->produce_buffer(which_output, buffer);