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Merge from master and work to tidy PDM code for release

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This commit is contained in:
Ross Owen
2015-10-20 10:37:07 +01:00
parent 2580dcc721 0e217bb639
commit 2d81bdc7c1
17 changed files with 304 additions and 314 deletions
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289
module_usb_audio/pdm_mics/pcm_pdm_mic.xc
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@@ -24,287 +24,54 @@ in port p_mclk = PORT_PDM_MCLK;
clock mclk = on tile[PDM_TILE]: XS1_CLKBLK_1;
clock pdmclk = on tile[PDM_TILE]: XS1_CLKBLK_3;
on tile[0]:p_leds leds = DEFAULT_INIT;
// Buttons
in port p_buttons = on tile[0]: XS1_PORT_4A;
enum buttons
void user_pdm_process(frame_audio *audio)
{
BUTTON_A=1<<0,
BUTTON_B=1<<1,
BUTTON_C=1<<2,
BUTTON_D=1<<3
};
static unsigned gain = 8*4096*8;
static const one_meter_thirty_degrees[6] = {0, 3, 8, 11, 8, 3};
static void set_dir(client interface led_button_if lb, unsigned dir, unsigned delay[]){
for(unsigned i=0;i<13;i++)
lb.set_led_brightness(i, 0);
delay[0] = 5;
for(unsigned i=0;i<6;i++)
delay[i+1] = one_meter_thirty_degrees[(i - dir + 3 +6)%6];
switch(dir){
case 0:{
lb.set_led_brightness(0, 255);
lb.set_led_brightness(1, 255);
break;
}
case 1:{
lb.set_led_brightness(2, 255);
lb.set_led_brightness(3, 255);
break;
}
case 2:{
lb.set_led_brightness(4, 255);
lb.set_led_brightness(5, 255);
break;
}
case 3:{
lb.set_led_brightness(6, 255);
lb.set_led_brightness(7, 255);
break;
}
case 4:{
lb.set_led_brightness(8, 255);
lb.set_led_brightness(9, 255);
break;
}
case 5:{
lb.set_led_brightness(10, 255);
lb.set_led_brightness(11, 255);
break;
}
for(unsigned i=0;i<7;i++)
{
unsigned output = audio->data[i][0];
audio->data[i][0] = ((uint64_t)output*gain)>>8;
}
}
void lores_DAS_fixed(streaming chanend c_ds_output_0, streaming chanend c_ds_output_1,
client interface led_button_if lb, chanend c_audio)
void pdm_process(streaming chanend c_ds_output_0, streaming chanend c_ds_output_1, chanend c_audio)
{
unsigned buffer = 1; //buffer index
frame_audio audio[2]; //double buffered
memset(audio, sizeof(frame_audio), 0);
int omni = 0;
decimator_init_audio_frame(c_ds_output_0, c_ds_output_1, buffer, audio);
#define MAX_DELAY 128
unsigned gain = 4096;
#ifdef FORM_BEAM
unsigned delay[7] = {0, 0, 0, 0, 0, 0, 0};
int delay_buffer[MAX_DELAY][7];
memset(delay_buffer, sizeof(int)*8*8, 0);
unsigned delay_head = 0;
unsigned dir = 0;
set_dir(lb, dir, delay);
#else
int summed = 0;
/* Light center LED, kill other LEDs */
for(unsigned i=0;i<13;i++)
lb.set_led_brightness(i, 0);
lb.set_led_brightness(12, 255);
#endif
unsafe
{
c_ds_output_0 <: (frame_audio * unsafe)audio[0].data[0];
c_ds_output_1 <: (frame_audio * unsafe)audio[0].data[4];
while(1)
{
frame_audio * current = decimator_get_next_audio_frame(c_ds_output_0, c_ds_output_1, buffer, audio);
while(1){
schkct(c_ds_output_0, 8);
schkct(c_ds_output_1, 8);
c_ds_output_0 <: (frame_audio * unsafe)audio[buffer].data[0];
c_ds_output_1 <: (frame_audio * unsafe)audio[buffer].data[4];
buffer = 1 - buffer;
#ifdef FORM_BEAM
//copy the current sample to the delay buffer
for(unsigned i=0;i<7;i++)
delay_buffer[delay_head][i] = audio[buffer].data[i][0];
//light the LED for the current direction
#endif
int t;
select {
case lb.button_event():{
unsigned button;
e_button_state pressed;
lb.get_button_event(button, pressed);
if(pressed == BUTTON_PRESSED){
switch(button){
case 0:{
#ifdef FORM_BEAM
printf("beamed\n");
if(omni)
{
omni = 0;
lb.set_led_brightness(12, 0);
set_dir(lb, dir, delay);
}
else
{
dir--;
if(dir == -1)
dir = 5;
set_dir(lb, dir, delay);
printf("dir %d\n", dir+1);
for(unsigned i=0;i<7;i++)
printf("delay[%d] = %d\n", i, delay[i]);
printf("\n");
}
#else
summed = !summed;
if(summed)
{
for(unsigned i=0; i < 13; i++)
lb.set_led_brightness(i, 255);
}
else
{
for(unsigned i=0;i<13;i++)
lb.set_led_brightness(i, 0);
lb.set_led_brightness(12, 255);
}
#endif
break;
}
case 1:{
gain = ((gain<<3) + gain)>>3;
printf("gain: %d\n", gain);
break;
}
case 2:{
gain = ((gain<<3) - gain)>>3;
printf("gain: %d\n", gain);
break;
}
case 3:{
#ifdef FORM_BEAM
lb.set_led_brightness(12, 255);
for(unsigned i=0;i<12;i++)
lb.set_led_brightness(i, 0);
#if 0
dir++;
if(dir == 6)
dir = 0;
set_dir(lb, dir, delay);
printf("dir %d\n", dir+1);
for(unsigned i=0;i<7;i++)
printf("delay[%d] = %d\n", i, delay[i]);
printf("\n");
#endif
printf("omni\n");
omni = 1;
#endif
break;
}
}
}
break;
}
default:break;
}
int output = 0;
#ifdef FORM_BEAM
if(!omni)
{
/* Do the sum of the delayed mics */
for(unsigned i=0;i<7;i++)
output += delay_buffer[(delay_head - delay[i])%MAX_DELAY][i];
output = ((uint64_t)output*gain)>>8;
c_audio <: output;
user_pdm_process(current);
/* Send out the individual mics */
for(unsigned i=0;i<7;i++)
{
/* Apply gain and output samples */
output = audio[buffer].data[i][0];
output = ((uint64_t)output*gain)>>8;
c_audio <: output;
}
}
else
/* Send out the individual mics */
for(unsigned i=0;i<7;i++)
{
/* Send out Mic[0] 8 times */
output = audio[buffer].data[0][0];
output <<=2;
output = ((uint64_t)output*gain)>>8;
for(unsigned i=0;i<8;i++)
c_audio <: output;
}
#else
if(summed)
{
/* Output summed */
for(unsigned i=0;i<7;i++)
output += audio[buffer].data[i][0];
output = ((uint64_t)output*gain)>>8;
unsigned output = current->data[i][0];
c_audio <: output;
/* Apply gain to all mics and send */
for(unsigned i=0;i<7;i++)
{
output = audio[buffer].data[i][0];
output = ((uint64_t)output*gain)>>8;
c_audio <: output;
}
}
else
{
/* Send mic 0 out 8 times */
for(unsigned i=0;i<8;i++)
{
/* Apply gain and output samples */
output = audio[buffer].data[0][0];
output = ((uint64_t)output*gain)>>8;
c_audio <: output<<2;
}
}
#endif
#ifdef FORM_BEAM
delay_head++;
delay_head%=MAX_DELAY;
#endif
c_audio <: 0;
}
}
}
#define DF 1
#define OUTPUT_SAMPLE_RATE (48000/DF)
#define MASTER_CLOCK_FREQUENCY 24576000
//TODO make these not global
int data_0[8*COEFS_PER_PHASE] = {0};
int data_1[8*COEFS_PER_PHASE] = {0};
int data_0[4*COEFS_PER_PHASE*DF] = {0};
int data_1[4*COEFS_PER_PHASE*DF] = {0};
void pcm_pdm_mic(chanend c_pcm_out)
{
@@ -312,8 +79,6 @@ void pcm_pdm_mic(chanend c_pcm_out)
streaming chan c_ds_output_0, c_ds_output_1;
streaming chan c_buffer_mic0, c_buffer_mic1;
interface led_button_if lb;
configure_clock_src(mclk, p_mclk);
configure_clock_src_divide(pdmclk, p_mclk, 2);
configure_port_clock_output(p_pdm_clk, pdmclk);
@@ -323,17 +88,15 @@ void pcm_pdm_mic(chanend c_pcm_out)
unsafe
{
const int * unsafe p[1] = {fir_1_coefs[0]};
decimator_config dc0 = {0, 1, 0, 0, 1, p, data_0, 0, {0,0, 0, 0}};
decimator_config dc1 = {0, 1, 0, 0, 1, p, data_1, 0, {0,0, 0, 0}};
decimator_config dc0 = {FRAME_SIZE_LOG2, 1, 0, 0, DF, FIR_LUT(DF), data_0, 0, {0,0, 0, 0}};
decimator_config dc1 = {FRAME_SIZE_LOG2, 1, 0, 0, DF, FIR_LUT(DF), data_1, 0, {0,0, 0, 0}};
par
{
button_and_led_server(lb, leds, p_buttons);
pdm_rx(p_pdm_mics, c_4x_pdm_mic_0, c_4x_pdm_mic_1);
decimate_to_pcm_4ch(c_4x_pdm_mic_0, c_ds_output_0, dc0);
decimate_to_pcm_4ch(c_4x_pdm_mic_1, c_ds_output_1, dc1);
lores_DAS_fixed(c_ds_output_0, c_ds_output_1, lb, c_pcm_out);
pdm_process(c_ds_output_0, c_ds_output_1, c_pcm_out);
}
}