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simplified sample freq list

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Ross Owen
2013-05-10 16:18:34 +01:00
parent c0398c33fe
commit 87154e3159
1 changed files with 30 additions and 47 deletions
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77
module_usb_audio/endpoint0/audiorequests.xc
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@@ -787,58 +787,41 @@ int AudioClassRequests_2(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp, c
case CS_SAM_FREQ_CONTROL:
/* Currently always return all freqs for all clocks */
//switch(unitID)
//{
// case ID_CLKSRC_INT:
// case ID_CLKSRC_EXT:
{
int num_freqs = 0;
int i = 2;
#if MAX_FREQ >= 44100
storeFreq(buffer, i, 44100);
num_freqs++;
#endif
#if MAX_FREQ >= 48000
storeFreq(buffer, i, 48000);
num_freqs++;
#endif
#if MAX_FREQ >= 88200
storeFreq(buffer, i, 88200);
num_freqs++;
#endif
#if MAX_FREQ >= 96000
storeFreq(buffer, i, 96000);
num_freqs++;
#endif
#if MAX_FREQ >= 176400
storeFreq(buffer, i, 176400);
num_freqs++;
#endif
#if MAX_FREQ >= 192000
storeFreq(buffer, i, 192000);
num_freqs++;
#endif
#if MAX_FREQ >= 352800
storeFreq(buffer, i, 352800);
num_freqs++;
#endif
#if MAX_FREQ >= 384000
storeFreq(buffer, i, 384000);
num_freqs++;
#endif
storeShort(buffer, 0, num_freqs);
// break;
//}
{
int num_freqs = 0;
int i = 2;
int currentFreq44 = 44100;
int currentFreq48 = 48000;
while(1)
{
if(currentFreq48 <= MAX_FREQ)
{
/* Note i passed byref here */
storeFreq(buffer, i, currentFreq48);
num_freqs++;
currentFreq48*=2;
storeFreq(buffer, i, currentFreq44);
num_freqs++;
currentFreq44*=2;
}
else if(currentFreq44 <= MAX_FREQ)
{
storeFreq(buffer, i, currentFreq44);
num_freqs++;
currentFreq44*=2;
}
else
break;
}
storeShort(buffer, 0, num_freqs);
return XUD_DoGetRequest(ep0_out, ep0_in, buffer, i, sp.wLength);
}
return XUD_DoGetRequest(ep0_out, ep0_in, buffer, i, sp.wLength);
}
break;
default:
//Unknown Control Selector in Clock Source Range Request
break;
break;
}
break;