Added one pre-condition detail in the header comment of mediademuxer_prepare()

Change-Id: I93f62a485e7cf538e8999bc99755ed8409aaea1c
Signed-off-by: satheesan.en <satheesan.en@samsung.com>

diff --git a/include/mediademuxer.h b/include/mediademuxer.h
index 33b9d3e..b358bcc 100755 (executable)
--- a/include/mediademuxer.h
+++ b/include/mediademuxer.h
@@ -148,6 +148,7 @@ int mediademuxer_set_data_source(mediademuxer_h demuxer, const char *path);
  * @retval #MEDIADEMUXER_ERROR_INVALID_STATE Invalid state
  * @retval #MEDIADEMUXER_ERROR_INVALID_OPERATION Invalid Operation
  * @pre The media demuxer state should be #MEDIADEMUXER_STATE_IDLE.
+ * @pre mediademuxer_set_error_cb should be called before mediademuxer_prepare().
  * @post The media demuxer state will be #MEDIADEMUXER_STATE_READY.
  * @see mediademuxer_set_data_source()
  * @see mediademuxer_unprepare()