@@ -975,9 +975,9 @@ int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)

         avctx->get_buffer == avcodec_default_get_buffer) {

         err = avctx->get_buffer(avctx, f);

     } else {

+        pthread_mutex_lock(&p->progress_mutex);

         p->requested_frame = f;

         p->state = STATE_GET_BUFFER;

-        pthread_mutex_lock(&p->progress_mutex);

         pthread_cond_broadcast(&p->progress_cond);

         while (p->state != STATE_SETTING_UP)