1041         if (in->echo_reference->read(in->echo_reference, &b) == 0)  in update_echo_reference()
1135     if (adev->echo_reference != NULL &&  in put_echo_reference()
1136             reference == adev->echo_reference) {  in put_echo_reference()
1139         adev->echo_reference = NULL;  in put_echo_reference()
1161     put_echo_reference(adev, adev->echo_reference);  in get_echo_reference()
1177                                            &adev->echo_reference);  in get_echo_reference()
1181     return adev->echo_reference;  in get_echo_reference()
1625             if (in->echo_reference != NULL) {  in read_and_process_frames()
1807                     in->echo_reference->write(in->echo_reference, &b);  in get_next_buffer()
2019     if (in->enable_aec && in->echo_reference == NULL) {  in start_input_stream()
2020         in->echo_reference = get_echo_reference(adev,  in start_input_stream()
2449         out->echo_reference = NULL;  in start_output_stream()
2451         if (adev->echo_reference != NULL)  in start_output_stream()
2452             out->echo_reference = adev->echo_reference;  in start_output_stream()
2648         if (out->echo_reference != NULL) {  in do_out_standby_l()
2649             out->echo_reference->write(out->echo_reference, NULL);  in do_out_standby_l()
2651                 ALOGV("%s: release_echo_reference %p", __func__, out->echo_reference);  in do_out_standby_l()
2652                 release_echo_reference(out->echo_reference);  in do_out_standby_l()
2655             out->echo_reference = NULL;  in do_out_standby_l()
3090             if (out->echo_reference != NULL) {  in out_write()
3091                 ALOGV("%s: release_echo_reference %p", __func__, out->echo_reference);  in out_write()
3092                 release_echo_reference(out->echo_reference);  in out_write()
3098             out->echo_reference = adev->echo_reference;  in out_write()
3129 …   if (out->echo_reference != NULL && pcm_device->pcm_profile->devices != SND_DEVICE_OUT_SPEAKER) {  in out_write()
3135                     out->echo_reference->write(out->echo_reference, &b);  in out_write()
3513         if (in->echo_reference != NULL) {  in do_in_standby_l()
3515             in->echo_reference->read(in->echo_reference, NULL);  in do_in_standby_l()
3516             put_echo_reference(adev, in->echo_reference);  in do_in_standby_l()
3517             in->echo_reference = NULL;  in do_in_standby_l()