http://www.rosoo.net/a/201107/14725.html
aplay: set_params:1019: unable to install sw params:
start_mode: EXPLICIT
xrun_mode: NONE
tstamp_mode: NONE
period_step: 1
sleep_min: 0
avail_min: 0
xfer_align: 718500528
silence_threshold: 0
silence_size: 0
boundary: 1073741824
绝大多数是由于大小端转换问题，使用这个宏
bswap_16
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