Re: usb-audio

[Antonio Willy Malara <behappy@maialone.com>]

On 2003.10.27 19:16, Takashi Iwai wrote:
> > 	/* FIXME: correct endianess and sign? */
> could you give more information:
> which program, which device and what format doesn't it work?

the system is a powermac, the device is a Griffin iMic, the app is jack 
version 0.80, the output is:

Sorry. The audio interface "hw:1"doesn't support either of the two 
hardware sample formats that jack can use.

that is raised from here (sorry for the wordwrap):

         if ((err = snd_pcm_hw_params_set_format (handle, hw_params, 
SND_PCM_FORMAT_S32)) < 0) {
                 if ((err = snd_pcm_hw_params_set_format (handle, 
hw_params, SND_PCM_FORMAT_S16)) < 0) {
                         jack_error ("Sorry. The audio interface \"%s\""
                                     "doesn't support either of the two 
hardware sample formats that jack can use.",
                                     device_name);
                         return -1;
                 }
         }

(/drivers/alsa/alsa_driver.c line 293 from the jack 0.80 tree)

i made this test: if i change the SND_PCM_FORMAT_S32 to _S32_LE the app 
goes forward but alsalib will raise many broken pipe errors and got no 
sound

hope this will help

> Takashi

willy


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