[Chromecast] Make ALSA rendering delay either accurate or kNoTimestamp

chromecast/media/cma/backend/alsa/alsa_wrapper.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chromecast/media/cma/backend/alsa/alsa_wrapper.h"
 
 #include "chromecast/media/cma/backend/alsa/alsa_features.h"
 
 namespace chromecast {
 namespace media {
@@ skipping 33 matching lines @@
 
 ssize_t AlsaWrapper::PcmFormatSize(snd_pcm_format_t format, size_t samples) {
   return snd_pcm_format_size(format, samples);
 }
 
 void AlsaWrapper::PcmStatusGetHtstamp(const snd_pcm_status_t* obj,
                                       snd_htimestamp_t* ptr) {
   snd_pcm_status_get_htstamp(obj, ptr);
 }
 
+snd_pcm_state_t AlsaWrapper::PcmStatusGetState(const snd_pcm_status_t* obj) {
+  return snd_pcm_status_get_state(obj);
+}
+
 int AlsaWrapper::PcmHwParamsMalloc(snd_pcm_hw_params_t** ptr) {
   return snd_pcm_hw_params_malloc(ptr);
 }
 
 void AlsaWrapper::PcmHwParamsFree(snd_pcm_hw_params_t* obj) {
   snd_pcm_hw_params_free(obj);
 }
 
 int AlsaWrapper::PcmHwParamsCurrent(snd_pcm_t* handle,
                                     snd_pcm_hw_params_t* params) {
@@ skipping 111 matching lines @@
   return 0;
 #endif  // BUILDFLAG(ALSA_MONOTONIC_RAW_TSTAMPS)
 }
 
 int AlsaWrapper::PcmSwParams(snd_pcm_t* handle, snd_pcm_sw_params_t* params) {
   return snd_pcm_sw_params(handle, params);
 }
 
 }  // namespace media
 }  // namespace chromecast