hi, all our customer board is very similar to DVEVM board. but we use another audio codec chip to replace the AIC33 codec. The interface between the DM6446 Audio serial port(ASP) and audio codec is statard IIS bus. now our requirement is that play the audio file throgh the speaker channel of audio codec chip. I think the data flow is like this:
sound data -> DM6446 ASP Data transmit resgister -> DM6446 ASP DX pin -> audio codec SDIN pin-> codec speaker out pin In order to choose the sound file to play , there is a application programm runing in user space. I will write the sound data to this audio device by the way of calling the function (audio_write(struct file *file, const char *buffer, size_t count, loff_t * ppos)) f in the davinci-audio.c Now my question is what kind ofsound file can be write into the audio device. 1)whether I can write a .mp3 or .wmv file directly. 2) whether the DM6446 ASP will convert the sound data to IIS format? May be these questions are stupid , what I hoep somebody can answer me anyway. thanks! _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
