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Decouple now reports out underflow to deliver and doesnt send mute samples itself

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This commit is contained in:
Ross Owen
2013-09-18 15:02:27 +01:00
parent cdef644159
commit 8316b87c9f
1 changed files with 5 additions and 2 deletions
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7
module_usb_audio/usb_buffer/decouple.xc
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@@ -113,7 +113,9 @@ void handle_audio_request(chanend c_mix_out)
/* Input word that triggered interrupt and handshake back */ /* Input word that triggered interrupt and handshake back */
(void) inuint(c_mix_out); (void) inuint(c_mix_out);
outuint(c_mix_out, 0);
/* Reply with underflow */
outuint(c_mix_out, outUnderflow);
asm("ldw %0, dp[g_curUsbSpeed]" : "=r" (usb_speed) :); asm("ldw %0, dp[g_curUsbSpeed]" : "=r" (usb_speed) :);
@@ -239,6 +241,7 @@ void handle_audio_request(chanend c_mix_out)
if(outUnderflow) if(outUnderflow)
{ {
#pragma xta endpoint "out_underflow" #pragma xta endpoint "out_underflow"
#if 0
/* We're still pre-buffering, send out 0 samps */ /* We're still pre-buffering, send out 0 samps */
for(int i = 0; i < NUM_USB_CHAN_OUT; i++) for(int i = 0; i < NUM_USB_CHAN_OUT; i++)
{ {
@@ -252,6 +255,7 @@ void handle_audio_request(chanend c_mix_out)
else else
outuint(c_mix_out, sample); outuint(c_mix_out, sample);
} }
#endif
/* Calc how many samples left in buffer */ /* Calc how many samples left in buffer */
outSamps = g_aud_from_host_wrptr - g_aud_from_host_rdptr; outSamps = g_aud_from_host_wrptr - g_aud_from_host_rdptr;
@@ -265,7 +269,6 @@ void handle_audio_request(chanend c_mix_out)
{ {
outUnderflow = 0; outUnderflow = 0;
outSamps++; outSamps++;
} }
} }
else else