Debug pcm_release state

Author: Cuda-Chen

virtio-snd.c

@@ -333,7 +333,6 @@ static void virtio_snd_read_jack_info_handler(
     uint32_t *plen)
 {
     uint32_t cnt = query->count;
-    printf("jack info handler count %d\n", cnt);
     for (uint32_t i = 0; i < cnt; i++) {
         info[i].hdr.hda_fn_nid = 0;
         info[i].features = 0;
@@ -359,7 +358,6 @@ static void virtio_snd_read_pcm_info_handler(
     uint32_t *plen)
 {
     uint32_t cnt = query->count;
-    printf("snd info handler count %d\n", cnt);
     for (uint32_t i = 0; i < cnt; i++) {
         info[i].hdr.hda_fn_nid = 0;
         info[i].features = 0;
@@ -388,7 +386,6 @@ static void virtio_snd_read_chmap_info_handler(
     uint32_t *plen)
 {
     uint32_t cnt = query->count;
-    printf("chmap info handler count %d\n", cnt);
     for (uint32_t i = 0; i < cnt; i++) {
         info[i].hdr.hda_fn_nid = 0;
         info[i].direction = VIRTIO_SND_D_OUTPUT;
@@ -516,6 +513,7 @@ static void virtio_snd_read_pcm_stop(const virtio_snd_pcm_hdr_t *query,
 static void virtio_snd_read_pcm_release(const virtio_snd_pcm_hdr_t *query,
                                         uint32_t *plen)
 {
+    fprintf(stderr, "virtio_snd_read_pcm_release start\n");
     const virtio_snd_pcm_hdr_t *request = query;
     uint32_t stream_id = request->stream_id;
     uint32_t code = vsnd_props[stream_id].pp.hdr.hdr.code;
@@ -528,21 +526,28 @@ static void virtio_snd_read_pcm_release(const virtio_snd_pcm_hdr_t *query,
     }
     /* Control the callback to stop playing */
     /* TODO: add lock to avoid race condition */
+    fprintf(stderr, "start guest_playing\n");
     v.guest_playing = 0;
     pthread_cond_signal(&virtio_snd_ctrl_cond);
+    fprintf(stderr, "pass guest_playing\n");
 
     vsnd_props[stream_id].pp.hdr.hdr.code = VIRTIO_SND_R_PCM_RELEASE;
     CNFAClose(vsnd_props[stream_id].audio_host);
+    fprintf(stderr, "pass CNFAclose\n");
 
     /* Tear down the PCM frames. */
     virtio_snd_pcm_frame_t *t = NULL;
     struct queue_head *frame_q = &(vsnd_props[stream_id].pcm_frames_q);
     virtio_snd_pcm_frame_t *frame = vsnd_props[stream_id].pcm_frames;
+    int idx = 0;
     queue_for_each_entry_safe(frame, t, frame_q, q)
     {
         free(frame->buf);
         queue_del(&frame->q);
         free(frame);
+
+        fprintf(stderr, "tear down frame %d\n", idx);
+        idx++;
     }
     assert(queue_empty(frame_q));
 
@@ -579,8 +584,10 @@ static void virtio_snd_cb(struct CNFADriver *dev,
 
     pthread_mutex_lock(&virtio_snd_ctrl_mutex);
 
-    while (v_ptr->guest_playing <= 0)
+    while (v_ptr->guest_playing <= 0) {
+        fprintf(stderr, "wait ctrl cond\n");
         pthread_cond_wait(&virtio_snd_ctrl_cond, &virtio_snd_ctrl_mutex);
+    }
 
     v_ptr->guest_playing--;