dengweijie/lib_xua
1
0
Fork 0
forked from PAWPAW-Mirror/lib_xua
Code Pull Requests Activity

Fixed up mixer channel comms scheme

Browse Source
This commit is contained in:
Ross Owen
2015-09-09 11:15:06 +01:00
parent 7c1c5499f8
commit 9036bac932
1 changed files with 12 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
module_usb_audio/mixer/mixer.xc
View File

@@ -203,6 +203,9 @@ static inline void GiveSamplesToHost(chanend c, xc_ptr ptr, xc_ptr multIn)
#pragma unsafe arrays
static inline void GetSamplesFromHost(chanend c)
{
#if (NUM_USB_CHAN_OUT == 0)
inuint(c);
#else
{
#pragma loop unroll
for (int i=0; i<NUM_USB_CHAN_OUT; i++)
@@ -238,6 +241,7 @@ static inline void GetSamplesFromHost(chanend c)
write_via_xc_ptr_indexed(samples_array, i, h);
#else
ptr_samples[i] = sample;
#endif
#endif
}
}
@@ -358,9 +362,10 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
/* Request from audio()/mixer2() */
request = inuint(c_mixer2);
/* Forward on Request for data to decouple thread */
outuint(c_host, request);
/* Between request to decouple and respose ~ 400nS latency for interrupt to fire */
select
{
@@ -531,7 +536,7 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
}
else
{
inuint(c_host);
#if MAX_MIX_COUNT > 0
outuint(c_mixer2, 0);
GiveSamplesToHost(c_host, samples_to_host_map, multIn);
@@ -543,7 +548,7 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
inuint(c_mixer2);
#ifdef FAST_MIXER
mixed = doMix0(samples, mix_mult_slice(0));
#else
NN#else
mixed = doMix(samples, mix_map_slice(0),mix_mult_slice(0));
#endif
write_via_xc_ptr_indexed(samples_array, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 0), mixed);
@@ -559,11 +564,11 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
#if MAX_MIX_COUNT > 2
#ifdef FAST_MIXER
mixed = doMix2(samples, mix_mult_slice(2));
mixed = doMix2(samples, mix_mult_slice(2));
#else
mixed = doMix(samples, mix_map_slice(2),mix_mult_slice(2));
mixed = doMix(samples, mix_map_slice(2),mix_mult_slice(2));
#endif
write_via_xc_ptr_indexed(samples_array, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 2), mixed);
write_via_xc_ptr_indexed(samples_array, (NUM_USB_CHAN_OUT + NUM_USB_CHAN_IN + 2), mixed);
#if defined (LEVEL_METER_HOST) || defined(LEVEL_METER_LEDS)
ComputeMixerLevel(mixed, 2);
@@ -603,8 +608,8 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
#endif
GiveSamplesToDevice(c_mixer2, samples_to_device_map, multOut);
GetSamplesFromDevice(c_mixer2);
GiveSamplesToHost(c_host, samples_to_host_map, multIn);
GetSamplesFromHost(c_host);
GiveSamplesToHost(c_host, samples_to_host_map, multIn);
#endif
}
}