使用SDK例子程序播放声音失败（2G16G板子）

leo99

新买的核心板+底板（AIO-1126JD4-V1.0，2G16G核心板-V1.2），板子上自带系统版本如下：
Linux version 4.19.111 (lvsx@tchip14) (kernel commit id: 618d4940d48a66d78328cb3e57cd74ef9e49cc3e) (sdk version: rv1126_rv1109_linux_release_20221222_v2.2.5d.xml) (gcc version 6.3.1 20170404 (Linaro GCC 6.3-2017.05)) #320 SMP PREEMPT Thu Dec 22 10:32:23 CST 2022


使用SDK例子程序rkmedia_ao_test播放声音失败，错误如下：
#SampleRate: 16000
#Channel Count: 2
#Frame Count: 1024
#Volume: 50
#Output Path: backingcharge.wav
##RKMEDIA Log level: 2
[RKMEDIA][SYS][Info]:text is all=2
[RKMEDIA][SYS][Info]:module is all, log_level is 2
[RKMEDIA][SYS][Info]:RK_MPI_AO_EnableChn: Enable AO[0] Start...
[RKMEDIA][SYS][Info]:RK_MPI_AO_EnableChn: Enable AO[0] End...
#Before Volume set, volume=50
#After Volume set, volume=50
main initial finish
# TimeVal:64000us, ReadSize:4096
ERROR: RK_MPI_SYS_SendMediaBuffer failed! ret = -7
main exit!
[RKMEDIA][SYS][Info]:RK_MPI_AO_DisableChn: Disable AO[0] Start...
[RKMEDIA][SYS][Info]:OutputStreamFlow:alsa_playback_stream quit
[RKMEDIA][SYS][Info]:audio playback close done
[RKMEDIA][SYS][Info]:RK_MPI_AO_DisableChn: Disable AO[0] End...
[root@RV1126_RV1109:/userdata/media/test/labs]#


请看下是什么问题呢？