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DSD/PCM mode now rememebered and only changed when required. Re-oreded when Stream Start/Stop is called for better use with Mute signals. Writes to shared mute sample

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This commit is contained in:
Ross Owen
2013-08-29 19:28:31 +01:00
parent 56e92355a3
commit d889ab5bce
1 changed files with 62 additions and 53 deletions
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115
module_usb_audio/endpoint0/endpoint0.xc
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@@ -110,6 +110,13 @@ extern unsigned g_iap_reset;
'\0' \
}
#ifdef NATIVE_DSD
/* We remember if we are in DSD mode to avoid Configuring the DAC too often - thus avoiding pops and clicks */
unsigned g_dsdMode = 0;
#endif
unsigned g_muteSample = 0;
/* String descriptors */
static unsigned char strDesc_langIDs[] = DESC_STR_LANGIDS;
@@ -262,51 +269,13 @@ void Endpoint0( chanend c_ep0_out, chanend c_ep0_in, chanend c_audioControl,
/* Over-riding USB_StandardRequests implementation */
if(sp.bRequest == USB_SET_INTERFACE)
{
#if defined(OUTPUT) && defined(INPUT)
/* Check for stream start stop on output and input audio interfaces */
if(sp.wValue && !g_interfaceAlt[1] && !g_interfaceAlt[2])
{
/* If start and input AND output not currently running */
UserAudioStreamStart();
}
else if(((sp.wIndex == 1) && (!sp.wValue)) && g_interfaceAlt[1] && (!g_interfaceAlt[2]))
{
/* if output stop and output running and input not running */
UserAudioStreamStop();
}
else if(((sp.wIndex == 2) && (!sp.wValue)) && g_interfaceAlt[2] && (!g_interfaceAlt[1]))
{
/* if input stop and input running and output not running */
UserAudioStreamStop();
}
#elif defined(OUTPUT) || defined(INPUT)
if(sp.wValue && (!g_interfaceAlt[1]))
{
/* if start and not currently running */
UserAudioStreamStart();
}
else if (!sp.wValue && g_interfaceAlt[1])
{
/* if stop and currently running */
UserAudioStreamStop();
}
#endif
/* Record interface change */
if(sp.wIndex < NUM_INTERFACES)
g_interfaceAlt[sp.wIndex] = sp.wValue;
/* Check for audio stream from host start/stop */
if(sp.wIndex == 1) // Ouput interface
{
switch(sp.wValue)
{
case 0:
#ifdef NATIVE_DSD
outuint(c_audioControl, SET_DSD_MODE);
outuint(c_audioControl, DSD_MODE_OFF);
// Handshake
chkct(c_audioControl, XS1_CT_END);
#endif /* NATIVE_DSD */
/* Stream stop */
break;
case 1:
/* Stream active + 0 chans */
@@ -323,25 +292,29 @@ void Endpoint0( chanend c_ep0_out, chanend c_ep0_in, chanend c_audioControl,
outuint(c_audioControl, NUM_USB_CHAN_OUT_A1);
}
#ifdef NATIVE_DSD
outuint(c_audioControl, SET_DSD_MODE);
outuint(c_audioControl, DSD_MODE_OFF);
if(g_dsdMode)
{
outuint(c_audioControl, SET_DSD_MODE);
outuint(c_audioControl, DSD_MODE_OFF);
SET_SHARED_GLOBAL(g_muteSample, 0);
// Handshake
chkct(c_audioControl, XS1_CT_END);
// Handshake
chkct(c_audioControl, XS1_CT_END);
g_dsdMode = 0;
}
#endif /* NATIVE_DSD */
break;
#ifdef NATIVE_DSD
case 2:
outuint(c_audioControl, SET_DSD_MODE);
outuint(c_audioControl, DSD_MODE_NATIVE);
// Handshake
chkct(c_audioControl, XS1_CT_END);
if(!g_dsdMode)
{
outuint(c_audioControl, SET_DSD_MODE);
outuint(c_audioControl, DSD_MODE_NATIVE);
SET_SHARED_GLOBAL(g_muteSample, 0x96969696);
chkct(c_audioControl, XS1_CT_END);
g_dsdMode = 1;
}
break;
#endif /* NATIVE_DSD */
}
@@ -393,8 +366,44 @@ void Endpoint0( chanend c_ep0_out, chanend c_ep0_in, chanend c_audioControl,
#endif
}
}
#if 1
#if defined(OUTPUT) && defined(INPUT)
/* Check for stream start stop on output and input audio interfaces */
if(sp.wValue && !g_interfaceAlt[1] && !g_interfaceAlt[2])
{
/* If start and input AND output not currently running */
UserAudioStreamStart();
}
else if(((sp.wIndex == 1) && (!sp.wValue)) && g_interfaceAlt[1] && (!g_interfaceAlt[2]))
{
/* if output stop and output running and input not running */
UserAudioStreamStop();
}
else if(((sp.wIndex == 2) && (!sp.wValue)) && g_interfaceAlt[2] && (!g_interfaceAlt[1]))
{
/* if input stop and input running and output not running */
UserAudioStreamStop();
}
#elif defined(OUTPUT) || defined(INPUT)
if(sp.wValue && (!g_interfaceAlt[1]))
{
/* if start and not currently running */
UserAudioStreamStart();
}
else if (!sp.wValue && g_interfaceAlt[1])
{
/* if stop and currently running */
UserAudioStreamStop();
}
#endif
#endif
/* Record interface change */
if(sp.wIndex < NUM_INTERFACES)
g_interfaceAlt[sp.wIndex] = sp.wValue;
/* No data stage for this request, just do data stage */
retVal = XUD_DoSetRequestStatus(ep0_in);
} /* if(sp.bRequest == SET_INTERFACE) */
break; /* BMREQ_H2D_STANDARD_INT */