Added period == buffer_size check to prevent misusing

diff --git a/aplay/aplay.c b/aplay/aplay.c
index b73bce625c9967d95a9cf740627c91f4897b83a8..09e524a5ff6c445f10b22f17dfdd03b559fa7323 100644 (file)
--- a/aplay/aplay.c
+++ b/aplay/aplay.c
@@ -777,12 +777,16 @@ static void set_params(void)
        assert(period_time >= 0);
        err = snd_pcm_hw_params(handle, params);
        if (err < 0) {
-               fprintf(stderr, "Unable to install hw params:\n");
+               error("Unable to install hw params:");
                snd_pcm_hw_params_dump(params, log);
                exit(EXIT_FAILURE);
        }
        chunk_size = snd_pcm_hw_params_get_period_size(params, 0);
        buffer_size = snd_pcm_hw_params_get_buffer_size(params);
+       if (chunk_size == buffer_size) {
+               error("Can't use period equal to buffer size (%u == %lu)", chunk_size, buffer_size);
+               exit(EXIT_FAILURE);
+       }
        snd_pcm_sw_params_current(handle, swparams);
        xfer_align = snd_pcm_sw_params_get_xfer_align(swparams);
        if (sleep_min)