I'm having issues encoding AAC audio on the DM365.
I'm capturing 16 KHz audio with the TVP5158. I upsample to 48Khz and pass 1024 samples (2 bytes per sample, 2 channels for 4096 bytes) to the encoder. I do not get any encoding errors. My encoded packets are streamed over RTP and eventually get decoded on a different system. I do not get any decoding errors either, but the whole encoding process (AUDENC1_process) takes ~26ms... at 48KHz you have 1024 packets available every ~21ms. Hence the profermance issue.
I ran the same test encoding video (h264 at 352x240) and found the encoding processing time to be ~3.6ms. This leads me to believe my problem is not with the HW, but rather with SW configuration. Could I be missing a configuration step?
Here are the configuration parameters I pass to AUDENC1_create
ITTIAM_EAACPLUSENC_Params
parms-> s_iaudenc_params.size = 112
parms-> s_iaudenc_params.sampleRate = 48000
parms-> s_iaudenc_params.bitRate = 128000
parms-> s_iaudenc_params.channelMode = 1
parms-> s_iaudenc_params.dataEndianness = 2
parms-> s_iaudenc_params.encMode = 0
parms-> s_iaudenc_params.inputFormat = 1
parms-> s_iaudenc_params.inputBitsPerSample = 16
parms-> s_iaudenc_params.maxBitRate = 576000
parms-> s_iaudenc_params.dualMonoMode = 0
parms-> s_iaudenc_params.crcFlag = 0
parms-> s_iaudenc_params.ancFlag = 0
parms-> s_iaudenc_params.lfeFlag = 0
parms-> noChannels = 2
parms-> aacClassic = 1
parms-> psEnable = 0
parms-> dualMono = 0
parms-> downmix = 0
parms-> useSpeechConfig = 0
parms-> fNoStereoPreprocessing = 0
parms-> invQuant = 2
parms-> useTns = 0
parms-> use_ADTS = 1
parms-> use_ADIF = 0
parms-> full_bandwidth = 0
parms-> i_channels_mask = 0
parms-> i_num_coupling_chan = 0
parms-> write_program_config_element = 0
