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protocol1.c
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/* Copyright (C)
* 2018 - John Melton, G0ORX/N6LYT
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <gtk/gtk.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <net/if_arp.h>
#include <net/if.h>
#include <ifaddrs.h>
#include <semaphore.h>
#include <string.h>
#include <errno.h>
#include <math.h>
#include <wdsp.h>
#include "band.h"
#include "channel.h"
#include "discovered.h"
#include "bpsk.h"
#include "mode.h"
#include "filter.h"
#include "receiver.h"
#include "transmitter.h"
#include "wideband.h"
#include "adc.h"
#include "dac.h"
#include "radio.h"
#include "main.h"
#include "protocol1.h"
#include "audio.h"
#include "signal.h"
#include "vfo.h"
#include "transmitter.h"
//#include "vox.h"
#include "ext.h"
#include "error_handler.h"
#ifdef CWDAEMON
#include "cwdaemon.h"
#endif
#define min(x,y) (x<y?x:y)
#define SYNC0 0
#define SYNC1 1
#define SYNC2 2
#define C0 3
#define C1 4
#define C2 5
#define C3 6
#define C4 7
#define DATA_PORT 1024
#define SYNC 0x7F
#define OZY_BUFFER_SIZE 512
//#define OUTPUT_BUFFER_SIZE 1024
// ozy command and control
#define MOX_DISABLED 0x00
#define MOX_ENABLED 0x01
#define MIC_SOURCE_JANUS 0x00
#define MIC_SOURCE_PENELOPE 0x80
#define CONFIG_NONE 0x00
#define CONFIG_PENELOPE 0x20
#define CONFIG_MERCURY 0x40
#define CONFIG_BOTH 0x60
#define PENELOPE_122_88MHZ_SOURCE 0x00
#define MERCURY_122_88MHZ_SOURCE 0x10
#define ATLAS_10MHZ_SOURCE 0x00
#define PENELOPE_10MHZ_SOURCE 0x04
#define MERCURY_10MHZ_SOURCE 0x08
#define SPEED_48K 0x00
#define SPEED_96K 0x01
#define SPEED_192K 0x02
#define SPEED_384K 0x03
#define MODE_CLASS_E 0x01
#define MODE_OTHERS 0x00
#define ALEX_ATTENUATION_0DB 0x00
#define ALEX_ATTENUATION_10DB 0x01
#define ALEX_ATTENUATION_20DB 0x02
#define ALEX_ATTENUATION_30DB 0x03
#define LT2208_GAIN_OFF 0x00
#define LT2208_GAIN_ON 0x04
#define LT2208_DITHER_OFF 0x00
#define LT2208_DITHER_ON 0x08
#define LT2208_RANDOM_OFF 0x00
#define LT2208_RANDOM_ON 0x10
static int data_socket;
static struct sockaddr_in data_addr;
static int data_addr_length;
static int output_buffer_size;
static unsigned char control_in[5]={0x00,0x00,0x00,0x00,0x00};
static gboolean running;
static long ep4_sequence;
static int current_rx=0;
static int mic_samples=0;
static int mic_sample_divisor=1;
static unsigned char output_buffer[OZY_BUFFER_SIZE];
static int output_buffer_index=8;
static int tx_output_buffer_index=8;
static int command=1;
enum {
SYNC_0=0,
SYNC_1,
SYNC_2,
CONTROL_0,
CONTROL_1,
CONTROL_2,
CONTROL_3,
CONTROL_4,
LEFT_SAMPLE_HI,
LEFT_SAMPLE_MID,
LEFT_SAMPLE_LOW,
RIGHT_SAMPLE_HI,
RIGHT_SAMPLE_MID,
RIGHT_SAMPLE_LOW,
MIC_SAMPLE_HI,
MIC_SAMPLE_LOW,
SKIP
};
static int state=SYNC_0;
static GThread *receive_thread_id;
static void start_protocol1_thread();
static gpointer receive_thread(gpointer arg);
static void process_ozy_input_buffer(unsigned char *buffer);
static void process_wideband_buffer(unsigned char *buffer);
void ozy_send_buffer();
static unsigned char metis_buffer[1032];
static long send_sequence=-1;
static int metis_offset=8;
static int metis_write(unsigned char ep,unsigned char* buffer,int length);
static void metis_start_stop(int command);
static void metis_send_buffer(unsigned char* buffer,int length);
static void metis_restart();
#define COMMON_MERCURY_FREQUENCY 0x80
#define PENELOPE_MIC 0x80
#ifdef USBOZY
//
// additional defines if we include USB Ozy support
//
#include "ozyio.h"
static GThread *ozy_EP4_rx_thread_id;
static GThread *ozy_EP6_rx_thread_id;
static gpointer ozy_ep4_rx_thread(gpointer arg);
static gpointer ozy_ep6_rx_thread(gpointer arg);
static void start_usb_receive_threads();
static int ozyusb_write(char* buffer,int length);
#define EP6_IN_ID 0x86 // end point = 6, direction toward PC
#define EP2_OUT_ID 0x02 // end point = 2, direction from PC
#define EP6_BUFFER_SIZE 2048
static unsigned char usb_output_buffer[EP6_BUFFER_SIZE];
static unsigned char ep6_inbuffer[EP6_BUFFER_SIZE];
static unsigned char usb_buffer_block = 0;
#endif
void protocol1_stop() {
metis_start_stop(0);
running=FALSE;
}
void protocol1_run() {
fprintf(stderr,"protocol1_run\n");
start_protocol1_thread();
for(int i=8;i<OZY_BUFFER_SIZE;i++) {
output_buffer[i]=0;
}
metis_restart();
}
void protocol1_set_mic_sample_rate(int rate) {
mic_sample_divisor=rate/48000;
}
void protocol1_init(RADIO *r) {
QueueInit();
fprintf(stderr,"protocol1_init\n");
protocol1_set_mic_sample_rate(r->sample_rate);
if(radio->local_microphone) {
if(audio_open_input(r)!=0) {
radio->local_microphone=FALSE;
}
}
#ifdef USBOZY
//
// if we have a USB interfaced Ozy device:
//
if (radio->discovered->device == DEVICE_OZY) {
fprintf(stderr,"protocol1_init: initialise ozy on USB\n");
ozy_initialise();
start_usb_receive_threads();
}
else
#endif
//start_protocol1_thread();
}
#ifdef USBOZY
//
// starts the threads for USB receive
// EP4 is the wideband endpoint
// EP6 is the "normal" USB frame endpoint
//
static void start_usb_receive_threads()
{
int rc;
fprintf(stderr,"protocol1 starting USB receive thread: buffer_size=%d\n",radio->buffer_size);
ozy_EP6_rx_thread_id = g_thread_new( "OZY EP6 RX", ozy_ep6_rx_thread, NULL);
if( ! ozy_EP6_rx_thread_id )
{
fprintf(stderr,"g_thread_new failed for ozy_ep6_rx_thread\n");
exit( -1 );
}
}
//
// receive threat for USB EP4 (wideband) not currently used.
//
static gpointer ozy_ep4_rx_thread(gpointer arg)
{
}
//
// receive threat for USB EP6 (512 byte USB Ozy frames)
// this function loops reading 4 frames at a time through USB
// then processes them one at a time.
//
static gpointer ozy_ep6_rx_thread(gpointer arg) {
int bytes;
unsigned char buffer[2048];
fprintf(stderr, "protocol1: USB EP6 receive_thread\n");
running=TRUE;
while (running)
{
bytes = ozy_read(EP6_IN_ID,ep6_inbuffer,EP6_BUFFER_SIZE); // read a 2K buffer at a time
if (bytes == 0)
{
fprintf(stderr,"protocol1_ep6_read: ozy_read returned 0 bytes... retrying\n");
continue;
}
else if (bytes != EP6_BUFFER_SIZE)
{
fprintf(stderr,"protocol1_ep6_read: OzyBulkRead failed %d bytes\n",bytes);
perror("ozy_read(EP6 read failed");
//exit(1);
}
else
// process the received data normally
{
process_ozy_input_buffer(&ep6_inbuffer[0]);
process_ozy_input_buffer(&ep6_inbuffer[512]);
process_ozy_input_buffer(&ep6_inbuffer[1024]);
process_ozy_input_buffer(&ep6_inbuffer[1024+512]);
}
}
// terminate
_exit(0);
}
#endif
static void start_protocol1_thread() {
fprintf(stderr,"protocol1 starting receive thread: buffer_size=%d output_buffer_size=%d\n",radio->buffer_size,output_buffer_size);
switch(radio->discovered->device) {
#ifdef USBOZY
case DEVICE_OZY:
break;
#endif
default:
data_socket=socket(PF_INET,SOCK_DGRAM,IPPROTO_UDP);
if(data_socket<0) {
perror("protocol1: create socket failed for data_socket\n");
exit(-1);
}
int optval = 1;
if(setsockopt(data_socket, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval))<0) {
perror("data_socket: SO_REUSEADDR");
}
if(setsockopt(data_socket, SOL_SOCKET, SO_REUSEPORT, &optval, sizeof(optval))<0) {
perror("data_socket: SO_REUSEPORT");
}
optval = 6;
if(setsockopt(data_socket, SOL_SOCKET, SO_PRIORITY, &optval, sizeof(optval))<0) {
perror("data_socket: SO_PRIORITY");
}
// bind to the interface
if(bind(data_socket,(struct sockaddr*)&radio->discovered->info.network.interface_address,radio->discovered->info.network.interface_length)<0) {
perror("protocol1: bind socket failed for data_socket\n");
exit(-1);
}
memcpy(&data_addr,&radio->discovered->info.network.address,radio->discovered->info.network.address_length);
data_addr_length=radio->discovered->info.network.address_length;
data_addr.sin_port=htons(DATA_PORT);
break;
}
receive_thread_id = g_thread_new( "protocol1", receive_thread, NULL);
if( ! receive_thread_id )
{
fprintf(stderr,"g_thread_new failed on receive_thread\n");
exit( -1 );
}
fprintf(stderr, "receive_thread: id=%p\n",receive_thread_id);
}
static gpointer receive_thread(gpointer arg) {
struct sockaddr_in addr;
socklen_t length;
unsigned char buffer[2048];
int bytes_read;
int ep;
long sequence;
fprintf(stderr, "protocol1: receive_thread\n");
running=TRUE;
length=sizeof(addr);
while(running) {
switch(radio->discovered->device) {
#ifdef USBOZY
case DEVICE_OZY:
// should not happen
break;
#endif
default:
bytes_read=recvfrom(data_socket,buffer,sizeof(buffer),0,(struct sockaddr*)&addr,&length);
if(bytes_read<0) {
if(errno==EAGAIN) {
error_handler("protocol1: receiver_thread: recvfrom socket failed","Radio not sending data");
} else {
error_handler("protocol1: receiver_thread: recvfrom socket failed",strerror(errno));
}
//running=FALSE;
continue;
}
if(buffer[0]==0xEF && buffer[1]==0xFE) {
switch(buffer[2]) {
case 1:
// get the end point
ep=buffer[3]&0xFF;
// get the sequence number
sequence=((buffer[4]&0xFF)<<24)+((buffer[5]&0xFF)<<16)+((buffer[6]&0xFF)<<8)+(buffer[7]&0xFF);
switch(ep) {
case 6: // EP6
// process the data
process_ozy_input_buffer(&buffer[8]);
process_ozy_input_buffer(&buffer[520]);
full_tx_buffer(radio->transmitter);
break;
case 4: // EP4
ep4_sequence++;
if(sequence!=ep4_sequence) {
ep4_sequence=sequence;
} else {
//int seq=(int)(sequence%32L);
if((sequence%32L)==0L) {
reset_wideband_buffer_index(radio->wideband);
}
process_wideband_buffer(&buffer[8]);
process_wideband_buffer(&buffer[520]);
}
break;
default:
fprintf(stderr,"unexpected EP %d length=%d\n",ep,bytes_read);
break;
}
break;
case 2: // response to a discovery packet
fprintf(stderr,"unexepected discovery response when not in discovery mode\n");
break;
default:
fprintf(stderr,"unexpected packet type: 0x%02X\n",buffer[2]);
break;
}
} else {
fprintf(stderr,"received bad header bytes on data port %02X,%02X\n",buffer[0],buffer[1]);
}
break;
}
}
fprintf(stderr,"EXIT: protocol1: receive_thread\n");
return NULL;
}
static void process_control_bytes() {
gboolean previous_ptt;
// Unused - commented in case used in future
//gboolean previous_dot;
//gboolean previous_dash;
gint tx_mode=USB;
RECEIVER *tx_receiver=radio->transmitter->rx;
if(tx_receiver!=NULL) {
if(radio->transmitter->rx->split) {
tx_mode=tx_receiver->mode_b;
} else {
tx_mode=tx_receiver->mode_a;
}
}
previous_ptt=radio->local_ptt;
//previous_dot=radio->dot;
//previous_dash=radio->dash;
radio->ptt=(control_in[0]&0x01)==0x01;
radio->dash=(control_in[0]&0x02)==0x02;
radio->dot=(control_in[0]&0x04)==0x04;
radio->local_ptt=radio->ptt;
if(tx_mode==CWL || tx_mode==CWU) {
radio->local_ptt=radio->ptt|radio->dot|radio->dash;
}
if(previous_ptt!=radio->local_ptt) {
g_print("process_control_bytes: ppt=%d dot=%d dash=%d\n",radio->ptt,radio->dot,radio->dash);
g_idle_add(ext_ptt_changed,(gpointer)radio);
}
switch((control_in[0]>>3)&0x1F) {
case 0:
radio->adc_overload=(control_in[1]&0x01)==0x01;
radio->IO1=(control_in[1]&0x02)==0x02;
radio->IO2=(control_in[1]&0x04)==0x04;
radio->IO3=(control_in[1]&0x08)==0x08;
//HL2 Buffer over/underflow
#ifdef CWDAEMON
//if ((radio->ptt) || keytx) {
int recov = (control_in[3]&0x40) == 0x40;
//int msb = (control_in[3]&0x80) == 0x80;
int msb = control_in[3];
//if (msb == 1) {
//g_print("Buffer recovery %d %d\n", recov, msb);
//}
//}
#endif
//}
if(radio->mercury_software_version!=control_in[2]) {
radio->mercury_software_version=control_in[2];
fprintf(stderr," Mercury Software version: %d (0x%0X)\n",radio->mercury_software_version,radio->mercury_software_version);
}
if(radio->penelope_software_version!=control_in[3]) {
radio->penelope_software_version=control_in[3];
if(radio->discovered->device!=DEVICE_HERMES_LITE2) {
fprintf(stderr," Penelope Software version: %d (0x%0X)\n",radio->penelope_software_version,radio->penelope_software_version);
}
}
if(radio->ozy_software_version!=control_in[4]) {
radio->ozy_software_version=control_in[4];
fprintf(stderr,"FPGA firmware version: %d.%d\n",radio->ozy_software_version/10,radio->ozy_software_version%10);
}
break;
case 1:
radio->transmitter->exciter_power=((control_in[1]&0xFF)<<8)|(control_in[2]&0xFF); // from Penelope or Hermes
int adc = ((control_in[1]&0xFF)<<8)|(control_in[2]&0xFF);
double this_temperature = (3.26 * ((double)adc/4096.0) - 0.5) / 0.01;
// Exponential moving average filter
double alpha = 0.7;
radio->transmitter->temperature = (alpha * this_temperature) + (1 - alpha) * radio->transmitter->temperature;
radio->transmitter->alex_forward_power=((control_in[3]&0xFF)<<8)|(control_in[4]&0xFF); // from Alex or Apollo
break;
case 2:
radio->transmitter->alex_reverse_power=((control_in[1]&0xFF)<<8)|(control_in[2]&0xFF); // from Alex or Apollo
radio->AIN3=(control_in[3]<<8)+control_in[4]; // from Pennelope or Hermes
break;
case 3:
radio->AIN4=(control_in[1]<<8)+control_in[2]; // from Pennelope or Hermes
radio->AIN6=(control_in[3]<<8)+control_in[4]; // from Pennelope or Hermes
break;
}
}
static int nreceiver;
static int left_sample;
static int right_sample;
static short mic_sample;
static double left_sample_double;
static double right_sample_double;
static int nsamples;
static int iq_samples;
static void process_ozy_byte(int b) {
int i,j;
switch(state) {
case SYNC_0:
if(b==SYNC) {
state++;
}
break;
case SYNC_1:
if(b==SYNC) {
state++;
}
break;
case SYNC_2:
if(b==SYNC) {
state++;
}
break;
case CONTROL_0:
control_in[0]=b;
state++;
break;
case CONTROL_1:
control_in[1]=b;
state++;
break;
case CONTROL_2:
control_in[2]=b;
state++;
break;
case CONTROL_3:
control_in[3]=b;
state++;
break;
case CONTROL_4:
control_in[4]=b;
process_control_bytes();
nreceiver=0;
iq_samples=(512-8)/((radio->receivers*6)+2);
nsamples=0;
state++;
break;
case LEFT_SAMPLE_HI:
left_sample=(int)((signed char)b<<16);
state++;
break;
case LEFT_SAMPLE_MID:
left_sample|=(int)((((unsigned char)b)<<8)&0xFF00);
state++;
break;
case LEFT_SAMPLE_LOW:
left_sample|=(int)((unsigned char)b&0xFF);
left_sample_double=(double)left_sample/8388607.0; // 24 bit sample 2^23-1
state++;
break;
case RIGHT_SAMPLE_HI:
right_sample=(int)((signed char)b<<16);
state++;
break;
case RIGHT_SAMPLE_MID:
right_sample|=(int)((((unsigned char)b)<<8)&0xFF00);
state++;
break;
case RIGHT_SAMPLE_LOW:
right_sample|=(int)((unsigned char)b&0xFF);
right_sample_double=(double)right_sample/8388607.0; // 24 bit sample 2^23-1
//find receiver
i=-1;
for(j=0;j<radio->discovered->supported_receivers;j++) {
if(radio->receiver[j]!=NULL) {
i++;
if(i==nreceiver) break;
}
}
if(radio->receiver[j]!=NULL) {
add_iq_samples(radio->receiver[j], left_sample_double,right_sample_double);
}
nreceiver++;
if(nreceiver==radio->receivers) {
state++;
} else {
state=LEFT_SAMPLE_HI;
}
break;
case MIC_SAMPLE_HI:
mic_sample=(short)(b<<8);
state++;
break;
case MIC_SAMPLE_LOW:
mic_sample|=(short)(b&0xFF);
if(!radio->local_microphone) {
mic_samples++;
if(mic_samples>=mic_sample_divisor) { // reduce to 48000
add_mic_sample(radio->transmitter,(float)mic_sample/32768.0);
mic_samples=0;
}
}
nsamples++;
if(nsamples==iq_samples) {
state=SYNC_0;
} else {
nreceiver=0;
state=LEFT_SAMPLE_HI;
}
break;
}
}
static void process_ozy_input_buffer(unsigned char *buffer) {
int i;
if(radio->receivers>0) {
for(i=0;i<512;i++) {
process_ozy_byte(buffer[i]&0xFF);
}
}
}
#ifdef OLD_PROCESS
static void process_ozy_input_buffer(char *buffer) {
int i,j;
int r;
int count;
int b=0;
unsigned char ozy_samples[8*8];
int bytes;
gboolean previous_ptt;
gboolean previous_dot;
gboolean previous_dash;
int left_sample;
int right_sample;
short mic_sample;
double left_sample_double;
double right_sample_double;
double mic_sample_double;
double gain=pow(10.0, radio->transmitter->mic_gain / 20.0);
int left_sample_1;
int right_sample_1;
double left_sample_double_rx;
double right_sample_double_rx;
double left_sample_double_tx;
double right_sample_double_tx;
int nreceivers;
gint tx_mode=USB;
RECEIVER *tx_receiver=radio->transmitter->rx;
if(tx_receiver!=NULL) {
if(radio->transmitter->rx->split) {
tx_mode=tx_receiver->mode_b;
} else {
tx_mode=tx_receiver->mode_a;
}
}
if(buffer[b++]==SYNC && buffer[b++]==SYNC && buffer[b++]==SYNC) {
// extract control bytes
control_in[0]=buffer[b++];
control_in[1]=buffer[b++];
control_in[2]=buffer[b++];
control_in[3]=buffer[b++];
control_in[4]=buffer[b++];
previous_ptt=radio->local_ptt;
previous_dot=radio->dot;
previous_dash=radio->dash;
radio->ptt=(control_in[0]&0x01)==0x01;
radio->dash=(control_in[0]&0x02)==0x02;
radio->dot=(control_in[0]&0x04)==0x04;
radio->local_ptt=radio->ptt;
if(tx_mode==CWL || tx_mode==CWU) {
radio->local_ptt=radio->ptt|radio->dot|radio->dash;
}
if(previous_ptt!=radio->local_ptt) {
//g_idle_add(ext_ptt_update,(gpointer)(long)(radio->local_ptt));
}
switch((control_in[0]>>3)&0x1F) {
case 0:
radio->adc_overload=control_in[1]&0x01==0x01;
radio->IO1=control_in[1]&0x02==0x02;
radio->IO2=control_in[1]&0x04==0x04;
radio->IO3=control_in[1]&0x08==0x08;
if(radio->mercury_software_version!=control_in[2]) {
radio->mercury_software_version=control_in[2];
fprintf(stderr," Mercury Software version: %d (0x%0X)\n",radio->mercury_software_version,radio->mercury_software_version);
}
if(radio->penelope_software_version!=control_in[3]) {
radio->penelope_software_version=control_in[3];
fprintf(stderr," Penelope Software version: %d (0x%0X)\n",radio->penelope_software_version,radio->penelope_software_version);
}
if(radio->ozy_software_version!=control_in[4]) {
radio->ozy_software_version=control_in[4];
fprintf(stderr,"FPGA firmware version: %d.%d\n",radio->ozy_software_version/10,radio->ozy_software_version%10);
}
break;
case 1:
radio->transmitter->exciter_power=((control_in[1]&0xFF)<<8)|(control_in[2]&0xFF); // from Penelope or Hermes
radio->transmitter->alex_forward_power=((control_in[3]&0xFF)<<8)|(control_in[4]&0xFF); // from Alex or Apollo
break;
case 2:
radio->transmitter->alex_reverse_power=((control_in[1]&0xFF)<<8)|(control_in[2]&0xFF); // from Alex or Apollo
radio->AIN3=(control_in[3]<<8)+control_in[4]; // from Pennelope or Hermes
break;
case 3:
radio->AIN4=(control_in[1]<<8)+control_in[2]; // from Pennelope or Hermes
radio->AIN6=(control_in[3]<<8)+control_in[4]; // from Pennelope or Hermes
break;
}
#ifdef PURESIGNAL
nreceivers=(RECEIVERS*2)+1;
#else
nreceivers=radio->receivers;
#endif
int iq_samples=(512-8)/((nreceivers*6)+2);
for(i=0;i<iq_samples;i++) {
for(r=0;r<nreceivers;r++) {
//find receiver
count=-1;
for(j=0;j<radio->discovered->supported_receivers;j++) {
if(radio->receiver[j]!=NULL) {
count++;
if(count==r) break;
}
}
left_sample = (int)((signed char) buffer[b++])<<16;
left_sample |= (int)((((unsigned char)buffer[b++])<<8)&0xFF00);
left_sample |= (int)((unsigned char)buffer[b++]&0xFF);
right_sample = (int)((signed char)buffer[b++]) << 16;
right_sample |= (int)((((unsigned char)buffer[b++])<<8)&0xFF00);
right_sample |= (int)((unsigned char)buffer[b++]&0xFF);
left_sample_double=(double)left_sample/8388607.0; // 24 bit sample 2^23-1
right_sample_double=(double)right_sample/8388607.0; // 24 bit sample 2^23-1
#ifdef PURESIGNAL
if(!isTransmitting(radio) || (isTransmitting(radio) && !radio->transmitter->puresignal)) {
switch(r) {
case 0:
add_iq_samples(receiver[0], left_sample_double,right_sample_double);
break;
case 1:
break;
case 2:
add_iq_samples(receiver[1], left_sample_double,right_sample_double);
break;
case 3:
break;
case 4:
break;
}
} else {
switch(r) {
case 0:
if(radio->discovered->device==DEVICE_METIS) {
left_sample_double_rx=left_sample_double;
right_sample_double_rx=right_sample_double;
}
break;
case 1:
if(radio->discovered->device==DEVICE_METIS) {
left_sample_double_tx=left_sample_double;
right_sample_double_tx=right_sample_double;
add_ps_iq_samples(radio->transmitter, left_sample_double_rx,right_sample_double_rx,left_sample_double_tx,right_sample_double_tx);
}
break;
case 2:
if(radio->discovered->device==DEVICE_HERMES) {
left_sample_double_rx=left_sample_double;
right_sample_double_rx=right_sample_double;
}
break;
case 3:
if(radio->discovered->device==DEVICE_METIS) {
left_sample_double_tx=left_sample_double;
right_sample_double_tx=right_sample_double;
add_ps_iq_samples(radio->transmitter, left_sample_double_tx,right_sample_double_tx,left_sample_double_rx,right_sample_double_rx);
} else if(radio->discovered->device==DEVICE_ANGELIA || radio->discovered->device==DEVICE_ORION || radio->discovered->device==DEVICE_ORION2) {
left_sample_double_rx=left_sample_double;
right_sample_double_rx=right_sample_double;
}
break;
case 4:
if(radio->discovered->device==DEVICE_ANGELIA || radio->discovered->device==DEVICE_ORION || radio->discovered->device==DEVICE_ORION2) {
left_sample_double_tx=left_sample_double;
right_sample_double_tx=right_sample_double;
add_ps_iq_samples(radio->transmitter, left_sample_double_tx,right_sample_double_tx,left_sample_double_rx,right_sample_double_rx);
}
break;
}
}
#else
if(radio->receiver[j]!=NULL) {
add_iq_samples(radio->receiver[j], left_sample_double,right_sample_double);
} else {
}
#endif
}
mic_sample = (short)(buffer[b++]<<8);
mic_sample |= (short)(buffer[b++]&0xFF);
if(!radio->local_microphone) {
mic_samples++;
if(mic_samples>=mic_sample_divisor) { // reduce to 48000
add_mic_sample(radio->transmitter,(float)mic_sample/32768);
mic_samples=0;
}
}
}
} else {
time_t t;
struct tm* gmt;
time(&t);
gmt=gmtime(&t);
g_print("%s: process_ozy_input_buffer: did not find sync: restarting\n",
asctime(gmt));
b=0;
while(b<510) {
if(buffer[b]==SYNC && buffer[b+1]==SYNC && buffer[b+2]==SYNC) {
g_print("found sync at %d\n",b);
}
b++;
}
metis_start_stop(0);
metis_restart();
}
}
#endif
// Send rx audio back to radio
void protocol1_audio_samples(RECEIVER *rx,short left_audio_sample,short right_audio_sample) {
if(!isTransmitting(radio)) {
// if(rx->mixed_audio==0) {
rx->mixed_left_audio=left_audio_sample;
rx->mixed_right_audio=right_audio_sample;
// } else {
// rx->mixed_left_audio+=left_audio_sample;
// rx->mixed_right_audio+=right_audio_sample;
// }
// rx->mixed_audio++;
// if(rx->mixed_audio>=radio->receivers) {
output_buffer[output_buffer_index++]=rx->mixed_left_audio>>8;
output_buffer[output_buffer_index++]=rx->mixed_left_audio;
output_buffer[output_buffer_index++]=rx->mixed_right_audio>>8;
output_buffer[output_buffer_index++]=rx->mixed_right_audio;
output_buffer[output_buffer_index++]=0;
output_buffer[output_buffer_index++]=0;
output_buffer[output_buffer_index++]=0;
output_buffer[output_buffer_index++]=0;
if(output_buffer_index>=OZY_BUFFER_SIZE) {
ozy_send_buffer();
output_buffer_index=8;
}
// rx->mixed_audio=0;
// }
}
}
void protocol1_iq_samples(int isample,int qsample) {
output_buffer[tx_output_buffer_index++]=0;
output_buffer[tx_output_buffer_index++]=0;
output_buffer[tx_output_buffer_index++]=0;
output_buffer[tx_output_buffer_index++]=0;
#ifdef CWDAEMON
gint tx_mode=USB;
RECEIVER *tx_receiver=radio->transmitter->rx;
if(tx_receiver!=NULL) {
if(radio->transmitter->rx->split) {
tx_mode=tx_receiver->mode_b;
} else {
tx_mode=tx_receiver->mode_a;
}
}
// I[0] of IQ stream is CWX keydown
if ((radio->cwdaemon) && (tx_mode==CWL || tx_mode==CWU)) {
g_mutex_lock(&cwdaemon_mutex);
if(keytx) {
output_buffer[tx_output_buffer_index++]=0x00;
output_buffer[tx_output_buffer_index++]=0x01;
}
else {
output_buffer[tx_output_buffer_index++]=0x00;
output_buffer[tx_output_buffer_index++]=0x00;
}
g_mutex_unlock(&cwdaemon_mutex);
}
else {
output_buffer[tx_output_buffer_index++]=isample>>8;
output_buffer[tx_output_buffer_index++]=isample;
}
#else
output_buffer[tx_output_buffer_index++]=isample>>8;
output_buffer[tx_output_buffer_index++]=isample;
#endif
output_buffer[tx_output_buffer_index++]=qsample>>8;
output_buffer[tx_output_buffer_index++]=qsample;
if(tx_output_buffer_index>=OZY_BUFFER_SIZE) {
tx_output_buffer_index=8;
ozy_send_buffer();
}
//}
}
void protocol1_eer_iq_samples(int isample,int qsample,int lasample,int rasample) {
if(isTransmitting(radio)) {
output_buffer[output_buffer_index++]=lasample>>8;
output_buffer[output_buffer_index++]=lasample;
output_buffer[output_buffer_index++]=rasample>>8;
output_buffer[output_buffer_index++]=rasample;
output_buffer[output_buffer_index++]=isample>>8;
output_buffer[output_buffer_index++]=isample;
output_buffer[output_buffer_index++]=qsample>>8;
output_buffer[output_buffer_index++]=qsample;
if(output_buffer_index>=OZY_BUFFER_SIZE) {
ozy_send_buffer();
output_buffer_index=8;
}
}
}
// Microphone buffer dump called from audio.c
void protocol1_process_local_mic(RADIO *r) {
int i;
for(i=0;i<r->local_microphone_buffer_size;i++) {
add_mic_sample(r->transmitter,r->local_microphone_buffer[i]);
}
}
static void process_wideband_buffer(unsigned char *buffer) {
int i;
short sample;
double sampledouble;
for(i=0;i<512;i+=2) {
sample = (short) ((buffer[i + 1] << 8) + (buffer[i] & 0xFF));
sampledouble=(double)sample/32767.0;
if(radio->wideband!=NULL) {