海思Hi3516DV300上播放G711U音频文件

在海思Hi3516DV300芯片运行Linux系统下，可通过如下函数来实现G711U音频文件的播放：

int ADecPlayVoiceFile(const char* filename)
{FILE* pfd;AUDIO_STREAM_S stStream;HI_S32 s32Ret,length,decLength,allLength = 0,aChn = 0;HI_U8 buf[SAMPLE_AUDIO_PTNUMPERFRM+4] = {0,1,0,0};pfd = fopen(filename, "rb");if (NULL == pfd){printf("%s: open file %s failed\n", __FUNCTION__, filename);return -1;}memset(&stStream,0,sizeof(AUDIO_STREAM_S));fseek(pfd, 0, SEEK_END);length= ftell(pfd);fseek(pfd, 0, SEEK_SET);while(allLength < length){decLength = (length - allLength)> SAMPLE_AUDIO_PTNUMPERFRM ? SAMPLE_AUDIO_PTNUMPERFRM:(length-allLength);decLength = fread(buf+4, 1, decLength, pfd);allLength += decLength;buf[2] = decLength/2;stStream.pStream = (HI_U8 *)buf;stStream.u32Len = decLength + 4;s32Ret = HI_MPI_ADEC_SendStream(aChn, &stStream, HI_TRUE);if (s32Ret){printf("%s %d chn:%d  s32ret:%#x\n",__FUNCTION__, __LINE__, aChn, s32Ret);break;}}s32Ret = HI_MPI_ADEC_SendEndOfStream(aChn, HI_FALSE);if (HI_SUCCESS != s32Ret){printf("%s: HI_MPI_ADEC_SendEndOfStream failed!\n", __FUNCTION__);}fclose(pfd);return s32Ret;
}

播放时，只需调用ADecPlayVoiceFile函数，传入G711U音频文件的路径即可。