Remove PCM enque/deque debug messages

Author: Cuda-Chen

virtio-snd.c

@@ -623,11 +623,10 @@ static void __virtio_snd_frame_dequeue(short *out,
     virtio_snd_prop_t *props = &vsnd_props[stream_id];
 
     pthread_mutex_lock(&props->lock.lock);
-    while (props->lock.buf_ev_notity < 1) {
-        fprintf(stderr, "---wait in deque---\n");
+    while (props->lock.buf_ev_notity < 1)
         pthread_cond_wait(&props->lock.readable, &props->lock.lock);
-    }
 
+    /* Get the PCM frames from queue */
     uint32_t written_bytes = 0;
     memset(props->intermediate, 0, sizeof(*props->intermediate) * n);
     while (!list_empty(&props->buf_queue_head) && written_bytes < n) {
@@ -638,25 +637,14 @@ static void __virtio_snd_frame_dequeue(short *out,
         uint32_t len =
             left < actual ? left : actual; /* Naive min implementation */
 
-        fprintf(stderr,
-                "--- left %" PRIu32 " actual %" PRIu32 " len %" PRIu32
-                " written %" PRIu32 " node->pos %" PRIu32 " node->len %" PRIu32
-                " node->addr %p \n",
-                left, actual, len, written_bytes, node->pos, node->len,
-                node->addr);
-
         memcpy(props->intermediate + written_bytes, node->addr + node->pos,
                len);
 
         written_bytes += len;
         node->pos += len;
-        if (node->pos >= node->len) {
-            fprintf(stderr, "-*- pop node->addr %p\n", node->addr);
+        if (node->pos >= node->len)
             list_del(&node->q);
-        }
     }
-    fprintf(stderr, "*** written %" PRIu32 " out n %" PRIu32 "\n",
-            written_bytes, n);
     memcpy(out, props->intermediate, written_bytes);
 
     props->lock.buf_ev_notity--;
@@ -679,14 +667,12 @@ static void virtio_snd_cb(struct CNFADriver *dev,
 
     pthread_mutex_lock(&v_ptr->ctrl_mutex);
     while (v_ptr->guest_playing == 0) {
-        fprintf(stderr, "wait ctrl cond\n");
         memset(out, 0, sizeof(*out) * out_buf_sz);
         pthread_cond_wait(&v_ptr->ctrl_cond, &v_ptr->ctrl_mutex);
     }
 
     uint32_t id = v_ptr->stream_id;
     uint32_t out_buf_bytes = out_buf_sz * VSND_CNFA_FRAME_SZ;
-    fprintf(stderr, "start to play with out_buf_sz %" PRIu32 "\n", out_buf_sz);
 
     __virtio_snd_frame_dequeue(out, out_buf_bytes, id);
 
@@ -784,12 +770,10 @@ static void __virtio_snd_frame_enqueue(void *payload,
     virtio_snd_prop_t *props = &vsnd_props[stream_id];
 
     pthread_mutex_lock(&props->lock.lock);
-    while (props->lock.buf_ev_notity > 0) {
-        fprintf(stderr, "---wait for enque---\n");
+    while (props->lock.buf_ev_notity > 0)
         pthread_cond_wait(&props->lock.writable, &props->lock.lock);
-    }
 
-    /* Add to queue */
+    /* Add a PCM frame to queue */
     /* TODO: add description of the speciality of Linux Kernel VirtIO sound
      * driver */
     vsnd_buf_queue_node_t *node = malloc(sizeof(*node));