62     proxy->pcm = NULL;  in proxy_prepare()
71     proxy->pcm = pcm_open(profile->card, profile->device, profile->direction, &proxy->alsa_config);  in proxy_open()
72     if (proxy->pcm == NULL) {  in proxy_open()
76     if (!pcm_is_ready(proxy->pcm)) {  in proxy_open()
77         ALOGE("[%s] proxy_open() pcm_open() failed: %s", LOG_TAG, pcm_get_error(proxy->pcm));  in proxy_open()
81         pcm_close(proxy->pcm);  in proxy_open()
82         proxy->pcm = NULL;  in proxy_open()
91     ALOGV("proxy_close() [pcm:%p]", proxy->pcm);  in proxy_close()
93     if (proxy->pcm != NULL) {  in proxy_close()
94         pcm_close(proxy->pcm);  in proxy_close()
95         proxy->pcm = NULL;  in proxy_close()
147     return pcm_write(proxy->pcm, data, count);  in proxy_write()
152     return pcm_read(proxy->pcm, data, count);  in proxy_read()