chan_usbradio.c

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#define  NEW_ASTERISK
/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2005, Digium, Inc.
 * Copyright (C) 2007 - 2008, Jim Dixon
 *
 * Jim Dixon, WB6NIL <jim@lambdatel.com>
 * Steve Henke, W9SH  <w9sh@arrl.net>
 * Based upon work by Mark Spencer <markster@digium.com> and Luigi Rizzo
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
  * at the top of the source tree.
 */

/*! \file
 *
 * \brief Channel driver for CM108 USB Cards with Radio Interface
 *
 * \author Jim Dixon  <jim@lambdatel.com>
 * \author Steve Henke  <w9sh@arrl.net>
 *
 * \par See also
 * \arg \ref Config_usbradio
 *
 * \ingroup channel_drivers
 */

/*** MODULEINFO
   <depend>oss</depend>
   <depend>alsa</depend>
   <depend>usb</depend>
   <defaultenabled>no</defaultenabled>
   <support_level>extended</support_level>
 ***/

/*** MAKEOPTS
<category name="MENUSELECT_CFLAGS" displayname="Compiler Flags" positive_output="yes">
   <member name="RADIO_RTX" displayname="Build RTX/DTX Radio Programming" touch_on_change="channels/chan_usbradio.c channels/xpmr/xpmr.h">
      <defaultenabled>no</defaultenabled>
      <depend>chan_usbradio</depend>
      <support_level>extended</support_level>
   </member>
   <member name="RADIO_XPMRX" displayname="Build Experimental Radio Protocols" touch_on_change="channels/chan_usbradio.c">
      <defaultenabled>no</defaultenabled>
      <depend>chan_usbradio</depend>
      <support_level>extended</support_level>
   </member>
</category>
 ***/

// 20070918 1600 EDT sph@xelatec.com changing to rx driven streams

#include "asterisk.h"

ASTERISK_FILE_VERSION(__FILE__, "$Revision: 354429 $")

#include <stdio.h>
#include <ctype.h>
#include <math.h>
#include <string.h>
#include <unistd.h>
#ifdef HAVE_SYS_IO_H
#include <sys/io.h>
#endif
#include <sys/ioctl.h>
#include <fcntl.h>
#include <sys/time.h>
#include <stdlib.h>
#include <errno.h>
#include <usb.h>
#include <alsa/asoundlib.h>

//#define HAVE_XPMRX          1
#ifdef RADIO_XPMRX
#define HAVE_XPMRX            1
#endif

#define CHAN_USBRADIO           1
#define DEBUG_USBRADIO          0   
#define DEBUG_CAPTURES        1
#define DEBUG_CAP_RX_OUT      0        
#define DEBUG_CAP_TX_OUT       0       
#define DEBUG_FILETEST        0         

#define RX_CAP_RAW_FILE       "/tmp/rx_cap_in.pcm"
#define RX_CAP_TRACE_FILE     "/tmp/rx_trace.pcm"
#define RX_CAP_OUT_FILE       "/tmp/rx_cap_out.pcm"

#define TX_CAP_RAW_FILE       "/tmp/tx_cap_in.pcm"
#define TX_CAP_TRACE_FILE     "/tmp/tx_trace.pcm"
#define TX_CAP_OUT_FILE       "/tmp/tx_cap_out.pcm"

#define  MIXER_PARAM_MIC_PLAYBACK_SW "Mic Playback Switch"
#define MIXER_PARAM_MIC_PLAYBACK_VOL "Mic Playback Volume"
#define  MIXER_PARAM_MIC_CAPTURE_SW "Mic Capture Switch"
#define  MIXER_PARAM_MIC_CAPTURE_VOL "Mic Capture Volume"
#define  MIXER_PARAM_MIC_BOOST "Auto Gain Control"
#define  MIXER_PARAM_SPKR_PLAYBACK_SW "Speaker Playback Switch"
#define  MIXER_PARAM_SPKR_PLAYBACK_VOL "Speaker Playback Volume"

#define  DELIMCHR ','
#define  QUOTECHR 34

#define  READERR_THRESHOLD 50

#include "./xpmr/xpmr.h"
#ifdef HAVE_XPMRX
#include "./xpmrx/xpmrx.h"
#include "./xpmrx/bitweight.h"
#endif

#if 0
#define traceusb1(a) {printf a;}
#else
#define traceusb1(a)
#endif

#if 0
#define traceusb2(a) {printf a;}
#else
#define traceusb2(a)
#endif

#ifdef __linux
#include <linux/soundcard.h>
#elif defined(__FreeBSD__)
#include <sys/soundcard.h>
#else
#include <soundcard.h>
#endif

#include "asterisk/lock.h"
#include "asterisk/frame.h"
#include "asterisk/logger.h"
#include "asterisk/callerid.h"
#include "asterisk/channel.h"
#include "asterisk/module.h"
#include "asterisk/options.h"
#include "asterisk/pbx.h"
#include "asterisk/config.h"
#include "asterisk/cli.h"
#include "asterisk/utils.h"
#include "asterisk/causes.h"
#include "asterisk/endian.h"
#include "asterisk/stringfields.h"
#include "asterisk/abstract_jb.h"
#include "asterisk/musiconhold.h"
#include "asterisk/dsp.h"

#ifndef  NEW_ASTERISK

/* ringtones we use */
#include "busy.h"
#include "ringtone.h"
#include "ring10.h"
#include "answer.h"

#endif

#define C108_VENDOR_ID     0x0d8c
#define C108_PRODUCT_ID    0x000c
#define C108_HID_INTERFACE 3

#define HID_REPORT_GET     0x01
#define HID_REPORT_SET     0x09

#define HID_RT_INPUT    0x01
#define HID_RT_OUTPUT      0x02

#define  EEPROM_START_ADDR 6
#define  EEPROM_END_ADDR      63
#define  EEPROM_PHYSICAL_LEN  64
#define EEPROM_TEST_ADDR   EEPROM_END_ADDR
#define  EEPROM_MAGIC_ADDR 6
#define  EEPROM_MAGIC      34329
#define  EEPROM_CS_ADDR    62
#define  EEPROM_RXMIXERSET 8
#define  EEPROM_TXMIXASET  9
#define  EEPROM_TXMIXBSET  10
#define  EEPROM_RXVOICEADJ 11
#define  EEPROM_RXCTCSSADJ 13
#define  EEPROM_TXCTCSSADJ 15
#define  EEPROM_RXSQUELCHADJ  16

/*! Global jitterbuffer configuration - by default, jb is disabled
 *  \note Values shown here match the defaults shown in usbradio.conf.sample */
static struct ast_jb_conf default_jbconf =
{
   .flags = 0,
   .max_size = 200,
   .resync_threshold = 1000,
   .impl = "fixed",
   .target_extra = 40,
};
static struct ast_jb_conf global_jbconf;

/*
 * usbradio.conf parameters are
START_CONFIG

[general]
    ; General config options which propigate to all devices, with
    ; default values shown. You may have as many devices as the
    ; system will allow. You must use one section per device, with
    ; [usb] generally (although its up to you) being the first device.
    ;
    ;
    ; debug = 0x0    ; misc debug flags, default is 0

   ; Set the device to use for I/O
   ; devicenum = 0
   ; Set hardware type here
   ; hdwtype=0               ; 0=limey, 1=sph

   ; rxboost=0          ; no rx gain boost
   ; rxctcssrelax=1        ; reduce talkoff from radios w/o CTCSS Tx HPF
   ; rxctcssfreqs=100.0,123.0      ; list of rx ctcss freq in floating point. must be in table
   ; txctcssfreqs=100.0,123.0      ; list tx ctcss freq, any frequency permitted
   ; txctcssdefault=100.0      ; default tx ctcss freq, any frequency permitted

   ; carrierfrom=dsp     ;no,usb,usbinvert,dsp,vox
   ; ctcssfrom=dsp       ;no,usb,dsp

   ; rxdemod=flat            ; input type from radio: no,speaker,flat
   ; txprelim=yes            ; output is pre-emphasised and limited
   ; txtoctype=no            ; no,phase,notone

   ; txmixa=composite        ;no,voice,tone,composite,auxvoice
   ; txmixb=no               ;no,voice,tone,composite,auxvoice

   ; invertptt=0

    ;------------------------------ JITTER BUFFER CONFIGURATION --------------------------
    ; jbenable = yes              ; Enables the use of a jitterbuffer on the receiving side of an
                                  ; USBRADIO channel. Defaults to "no". An enabled jitterbuffer will
                                  ; be used only if the sending side can create and the receiving
                                  ; side can not accept jitter. The USBRADIO channel can't accept jitter,
                                  ; thus an enabled jitterbuffer on the receive USBRADIO side will always
                                  ; be used if the sending side can create jitter.

    ; jbmaxsize = 200             ; Max length of the jitterbuffer in milliseconds.

    ; jbresyncthreshold = 1000    ; Jump in the frame timestamps over which the jitterbuffer is
                                  ; resynchronized. Useful to improve the quality of the voice, with
                                  ; big jumps in/broken timestamps, usualy sent from exotic devices
                                  ; and programs. Defaults to 1000.

    ; jbimpl = fixed              ; Jitterbuffer implementation, used on the receiving side of an USBRADIO
                                  ; channel. Two implementations are currenlty available - "fixed"
                                  ; (with size always equals to jbmax-size) and "adaptive" (with
                                  ; variable size, actually the new jb of IAX2). Defaults to fixed.

    ; jblog = no                  ; Enables jitterbuffer frame logging. Defaults to "no".
    ;-----------------------------------------------------------------------------------

[usb]

; First channel unique config

[usb1]

; Second channel config

END_CONFIG

 */

/*
 * Helper macros to parse config arguments. They will go in a common
 * header file if their usage is globally accepted. In the meantime,
 * we define them here. Typical usage is as below.
 * Remember to open a block right before M_START (as it declares
 * some variables) and use the M_* macros WITHOUT A SEMICOLON:
 *
 * {
 *    M_START(v->name, v->value) 
 *
 *    M_BOOL("dothis", x->flag1)
 *    M_STR("name", x->somestring)
 *    M_F("bar", some_c_code)
 *    M_END(some_final_statement)
 *    ... other code in the block
 * }
 *
 * XXX NOTE these macros should NOT be replicated in other parts of asterisk. 
 * Likely we will come up with a better way of doing config file parsing.
 */
#define M_START(var, val) \
        char *__s = var; char *__val = val;
#define M_END(x)   x;
#define M_F(tag, f)        if (!strcasecmp((__s), tag)) { f; } else
#define M_BOOL(tag, dst)   M_F(tag, (dst) = ast_true(__val) )
#define M_UINT(tag, dst)   M_F(tag, (dst) = strtoul(__val, NULL, 0) )
#define M_STR(tag, dst)    M_F(tag, ast_copy_string(dst, __val, sizeof(dst)))

/*
 * The following parameters are used in the driver:
 *
 *  FRAME_SIZE the size of an audio frame, in samples.
 *    160 is used almost universally, so you should not change it.
 *
 *  FRAGS   the argument for the SETFRAGMENT ioctl.
 *    Overridden by the 'frags' parameter in usbradio.conf
 *
 *    Bits 0-7 are the base-2 log of the device's block size,
 *    bits 16-31 are the number of blocks in the driver's queue.
 *    There are a lot of differences in the way this parameter
 *    is supported by different drivers, so you may need to
 *    experiment a bit with the value.
 *    A good default for linux is 30 blocks of 64 bytes, which
 *    results in 6 frames of 320 bytes (160 samples).
 *    FreeBSD works decently with blocks of 256 or 512 bytes,
 *    leaving the number unspecified.
 *    Note that this only refers to the device buffer size,
 *    this module will then try to keep the lenght of audio
 *    buffered within small constraints.
 *
 *  QUEUE_SIZE The max number of blocks actually allowed in the device
 *    driver's buffer, irrespective of the available number.
 *    Overridden by the 'queuesize' parameter in usbradio.conf
 *
 *    Should be >=2, and at most as large as the hw queue above
 *    (otherwise it will never be full).
 */

#define FRAME_SIZE   160
#define  QUEUE_SIZE  2           

#if defined(__FreeBSD__)
#define  FRAGS 0x8
#else
#define  FRAGS ( ( (6 * 5) << 16 ) | 0xc )
#endif

/*
 * XXX text message sizes are probably 256 chars, but i am
 * not sure if there is a suitable definition anywhere.
 */
#define TEXT_SIZE 256

#if 0
#define  TRYOPEN  1           /* try to open on startup */
#endif
#define  O_CLOSE  0x444       /* special 'close' mode for device */
/* Which device to use */
#if defined( __OpenBSD__ ) || defined( __NetBSD__ )
#define DEV_DSP "/dev/audio"
#else
#define DEV_DSP "/dev/dsp"
#endif

static const char *config = "usbradio.conf"; /* default config file */
#define config1 "usbradio_tune_%s.conf"    /* tune config file */

static FILE *frxcapraw = NULL, *frxcaptrace = NULL, *frxoutraw = NULL;
static FILE *ftxcapraw = NULL, *ftxcaptrace = NULL, *ftxoutraw = NULL;

static char *usb_device_list = NULL;
static int usb_device_list_size = 0;

static int usbradio_debug;
#if 0 //maw asdf sph
static int usbradio_debug_level = 0;
#endif

enum {RX_AUDIO_NONE,RX_AUDIO_SPEAKER,RX_AUDIO_FLAT};
enum {CD_IGNORE,CD_XPMR_NOISE,CD_XPMR_VOX,CD_HID,CD_HID_INVERT};
enum {SD_IGNORE,SD_HID,SD_HID_INVERT,SD_XPMR};               // no,external,externalinvert,software
enum {RX_KEY_CARRIER,RX_KEY_CARRIER_CODE};
enum {TX_OUT_OFF,TX_OUT_VOICE,TX_OUT_LSD,TX_OUT_COMPOSITE,TX_OUT_AUX};
enum {TOC_NONE,TOC_PHASE,TOC_NOTONE};

/* DECLARE STRUCTURES */

/*
 * Each sound is made of 'datalen' samples of sound, repeated as needed to
 * generate 'samplen' samples of data, then followed by 'silencelen' samples
 * of silence. The loop is repeated if 'repeat' is set.
 */
struct sound {
   int ind;
   short *data;
   int datalen;
   int samplen;
   int silencelen;
   int repeat;
};

#ifndef  NEW_ASTERISK

static struct sound sounds[] = {
   { AST_CONTROL_RINGING, "RINGING", ringtone, sizeof(ringtone)/2, 16000, 32000, 1 },
   { AST_CONTROL_BUSY, "BUSY", busy, sizeof(busy)/2, 4000, 4000, 1 },
   { AST_CONTROL_CONGESTION, "CONGESTION", busy, sizeof(busy)/2, 2000, 2000, 1 },
   { AST_CONTROL_RING, "RING10", ring10, sizeof(ring10)/2, 16000, 32000, 1 },
   { AST_CONTROL_ANSWER, "ANSWER", answer, sizeof(answer)/2, 2200, 0, 0 },
   { -1, NULL, 0, 0, 0, 0 },  /* end marker */
};

#endif

/*
 * descriptor for one of our channels.
 * There is one used for 'default' values (from the [general] entry in
 * the configuration file), and then one instance for each device
 * (the default is cloned from [general], others are only created
 * if the relevant section exists).
 */
struct chan_usbradio_pvt {
   struct chan_usbradio_pvt *next;

   char *name;
#ifndef  NEW_ASTERISK
   /*
    * cursound indicates which in struct sound we play. -1 means nothing,
    * any other value is a valid sound, in which case sampsent indicates
    * the next sample to send in [0..samplen + silencelen]
    * nosound is set to disable the audio data from the channel
    * (so we can play the tones etc.).
    */
   int sndcmd[2];          /* Sound command pipe */
   int cursound;           /* index of sound to send */
   int sampsent;           /* # of sound samples sent  */
   int nosound;            /* set to block audio from the PBX */
#endif

   int pttkick[2];
   int total_blocks;       /* total blocks in the output device */
   int sounddev;
   enum { M_UNSET, M_FULL, M_READ, M_WRITE } duplex;
   i16 cdMethod;
   int autoanswer;
   int autohangup;
   int hookstate;
   unsigned int queuesize;    /* max fragments in queue */
   unsigned int frags;        /* parameter for SETFRAGMENT */

   int warned;             /* various flags used for warnings */
#define WARN_used_blocks   1
#define WARN_speed      2
#define WARN_frag    4
   int w_errors;           /* overfull in the write path */
   struct timeval lastopen;

   int overridecontext;
   int mute;

   /* boost support. BOOST_SCALE * 10 ^(BOOST_MAX/20) must
    * be representable in 16 bits to avoid overflows.
    */
#define  BOOST_SCALE (1<<9)
#define  BOOST_MAX   40       /* slightly less than 7 bits */
   int boost;              /* input boost, scaled by BOOST_SCALE */
   char devicenum;
   char devstr[128];
   int spkrmax;
   int micmax;

#ifndef  NEW_ASTERISK
   pthread_t sthread;
#endif
   pthread_t hidthread;

   int stophid;
   FILE *hkickhid;

   struct ast_channel *owner;
   char ext[AST_MAX_EXTENSION];
   char ctx[AST_MAX_CONTEXT];
   char language[MAX_LANGUAGE];
   char cid_name[256];        /*XXX */
   char cid_num[256];         /*XXX */
   char mohinterpret[MAX_MUSICCLASS];

   /* buffers used in usbradio_write, 2 per int by 2 channels by 6 times oversampling (48KS/s) */
   char usbradio_write_buf[FRAME_SIZE * 2 * 2 * 6];    
   char usbradio_write_buf_1[FRAME_SIZE * 2 * 2* 6];

   int usbradio_write_dst;
   /* buffers used in usbradio_read - AST_FRIENDLY_OFFSET space for headers
    * plus enough room for a full frame
    */
   char usbradio_read_buf[FRAME_SIZE * (2 * 12) + AST_FRIENDLY_OFFSET];
   char usbradio_read_buf_8k[FRAME_SIZE * 2 + AST_FRIENDLY_OFFSET];
   int readpos;            /* read position above */
   struct ast_frame read_f;   /* returned by usbradio_read */

   char  debuglevel;
   char  radioduplex;         // 
   char    wanteeprom;

   int   tracetype;
   int     tracelevel;
   char    area;
   char  rptnum;
   int     idleinterval;
   int      turnoffs;
   int   txsettletime;
   char    ukey[48];

   char lastrx;
   char rxhidsq;
   char rxcarrierdetect;      // status from pmr channel
   char rxctcssdecode;        // status from pmr channel

   int  rxdcsdecode;
   int  rxlsddecode;

   char rxkeytype;
   char rxkeyed;           // indicates rx signal present

   char lasttx;
   char txkeyed;           // tx key request from upper layers 
   char txchankey;
   char txtestkey;

   time_t lasthidtime;
    struct ast_dsp *dsp;

   t_pmr_chan  *pmrChan;

   char    rxcpusaver;
   char    txcpusaver;

   char  rxdemod;
   float rxgain;
   char  rxcdtype;
   char  rxsdtype;
   int      rxsquelchadj;   /* this copy needs to be here for initialization */
   int     rxsqvoxadj;
   char  txtoctype;

   char    txprelim;
   float txctcssgain;
   char  txmixa;
   char  txmixb;

   char  invertptt;

   char  rxctcssrelax;
   float rxctcssgain;

   char    txctcssdefault[16];            // for repeater operation
   char  rxctcssfreqs[512];            // a string
   char    txctcssfreqs[512];

   char  txctcssfreq[32];           // encode now
   char  rxctcssfreq[32];           // decode now

   char    numrxctcssfreqs;            // how many
   char    numtxctcssfreqs;

   char    *rxctcss[CTCSS_NUM_CODES];     // pointers to strings
   char    *txctcss[CTCSS_NUM_CODES];

   int      txfreq;                    // in Hz
   int     rxfreq;

   //       start remote operation info
   char    set_txctcssdefault[16];           // for remote operation
   char  set_txctcssfreq[16];          // encode now
   char  set_rxctcssfreq[16];          // decode now

   char    set_numrxctcssfreqs;           // how many
   char    set_numtxctcssfreqs;

   char  set_rxctcssfreqs[16];            // a string
   char    set_txctcssfreqs[16];

   char    *set_rxctcss;                   // pointers to strings
   char    *set_txctcss;

   int      set_txfreq;                   // in Hz
   int     set_rxfreq;
   //       end remote operation info

   int         rxmixerset;       
   int   rxboostset;
   float rxvoiceadj;
   float rxctcssadj;
   int   txmixaset;
   int   txmixbset;
   int     txctcssadj;

   int      hdwtype;
   int      hid_gpio_ctl;     
   int      hid_gpio_ctl_loc; 
   int      hid_io_cor;       
   int      hid_io_cor_loc;   
   int      hid_io_ctcss;     
   int      hid_io_ctcss_loc;    
   int      hid_io_ptt;       
   int      hid_gpio_loc;     

   struct {
       unsigned rxcapraw:1;
      unsigned txcapraw:1;
      unsigned txcap2:1;
      unsigned rxcap2:1;
      unsigned rxplmon:1;
      unsigned remoted:1;
      unsigned txpolarity:1;
      unsigned rxpolarity:1;
      unsigned dcstxpolarity:1;
      unsigned dcsrxpolarity:1;
      unsigned lsdtxpolarity:1;
      unsigned lsdrxpolarity:1;
      unsigned loopback:1;
      unsigned radioactive:1;
   }b;
   unsigned short eeprom[EEPROM_PHYSICAL_LEN];
   char eepromctl;
   ast_mutex_t eepromlock;

   struct usb_dev_handle *usb_handle;
   int readerrs;
};

// maw add additional defaults !!!
static struct chan_usbradio_pvt usbradio_default = {
#ifndef  NEW_ASTERISK
   .cursound = -1,
#endif
   .sounddev = -1,
   .duplex = M_UNSET,         /* XXX check this */
   .autoanswer = 1,
   .autohangup = 1,
   .queuesize = QUEUE_SIZE,
   .frags = FRAGS,
   .ext = "s",
   .ctx = "default",
   .readpos = AST_FRIENDLY_OFFSET,  /* start here on reads */
   .lastopen = { 0, 0 },
   .boost = BOOST_SCALE,
   .wanteeprom = 1,
   .area = 0,
   .rptnum = 0,
};

/* DECLARE FUNCTION PROTOTYPES   */

static void store_txtoctype(struct chan_usbradio_pvt *o, const char *s);
static int  hidhdwconfig(struct chan_usbradio_pvt *o);
static int set_txctcss_level(struct chan_usbradio_pvt *o);
static void pmrdump(struct chan_usbradio_pvt *o);
static void mult_set(struct chan_usbradio_pvt *o);
static int  mult_calc(int value);
static void mixer_write(struct chan_usbradio_pvt *o);
static void tune_rxinput(int fd, struct chan_usbradio_pvt *o);
static void tune_rxvoice(int fd, struct chan_usbradio_pvt *o);
static void tune_rxctcss(int fd, struct chan_usbradio_pvt *o);
static void tune_txoutput(struct chan_usbradio_pvt *o, int value, int fd);
static void tune_write(struct chan_usbradio_pvt *o);

static char *usbradio_active;  /* the active device */

static int setformat(struct chan_usbradio_pvt *o, int mode);

static struct ast_channel *usbradio_request(const char *type, struct ast_format_cap *cap,
      const struct ast_channel *requestor,
      const char *data, int *cause);
static int usbradio_digit_begin(struct ast_channel *c, char digit);
static int usbradio_digit_end(struct ast_channel *c, char digit, unsigned int duration);
static int usbradio_text(struct ast_channel *c, const char *text);
static int usbradio_hangup(struct ast_channel *c);
static int usbradio_answer(struct ast_channel *c);
static struct ast_frame *usbradio_read(struct ast_channel *chan);
static int usbradio_call(struct ast_channel *c, const char *dest, int timeout);
static int usbradio_write(struct ast_channel *chan, struct ast_frame *f);
static int usbradio_indicate(struct ast_channel *chan, int cond, const void *data, size_t datalen);
static int usbradio_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
static int xpmr_config(struct chan_usbradio_pvt *o);

#if   DEBUG_FILETEST == 1
static int RxTestIt(struct chan_usbradio_pvt *o);
#endif

static char tdesc[] = "USB (CM108) Radio Channel Driver";

static struct ast_format slin;

static struct ast_channel_tech usbradio_tech = {
   .type = "Radio",
   .description = tdesc,
   .requester = usbradio_request,
   .send_digit_begin = usbradio_digit_begin,
   .send_digit_end = usbradio_digit_end,
   .send_text = usbradio_text,
   .hangup = usbradio_hangup,
   .answer = usbradio_answer,
   .read = usbradio_read,
   .call = usbradio_call,
   .write = usbradio_write,
   .indicate = usbradio_indicate,
   .fixup = usbradio_fixup,
};

/* Call with:  devnum: alsa major device number, param: ascii Formal
Parameter Name, val1, first or only value, val2 second value, or 0 
if only 1 value. Values: 0-99 (percent) or 0-1 for baboon.

Note: must add -lasound to end of linkage */

static int amixer_max(int devnum,char *param)
{
int   rv,type;
char  str[100];
snd_hctl_t *hctl;
snd_ctl_elem_id_t *id;
snd_hctl_elem_t *elem;
snd_ctl_elem_info_t *info;

   sprintf(str,"hw:%d",devnum);
   if (snd_hctl_open(&hctl, str, 0)) return(-1);
   snd_hctl_load(hctl);
   snd_ctl_elem_id_alloca(&id);
   snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
   snd_ctl_elem_id_set_name(id, param);  
   elem = snd_hctl_find_elem(hctl, id);
   if (!elem)
   {
      snd_hctl_close(hctl);
      return(-1);
   }
   snd_ctl_elem_info_alloca(&info);
   snd_hctl_elem_info(elem,info);
   type = snd_ctl_elem_info_get_type(info);
   rv = 0;
   switch(type)
   {
       case SND_CTL_ELEM_TYPE_INTEGER:
      rv = snd_ctl_elem_info_get_max(info);
      break;
       case SND_CTL_ELEM_TYPE_BOOLEAN:
      rv = 1;
      break;
   }
   snd_hctl_close(hctl);
   return(rv);
}

/* Call with:  devnum: alsa major device number, param: ascii Formal
Parameter Name, val1, first or only value, val2 second value, or 0 
if only 1 value. Values: 0-99 (percent) or 0-1 for baboon.

Note: must add -lasound to end of linkage */

static int setamixer(int devnum,char *param, int v1, int v2)
{
int   type;
char  str[100];
snd_hctl_t *hctl;
snd_ctl_elem_id_t *id;
snd_ctl_elem_value_t *control;
snd_hctl_elem_t *elem;
snd_ctl_elem_info_t *info;

   sprintf(str,"hw:%d",devnum);
   if (snd_hctl_open(&hctl, str, 0)) return(-1);
   snd_hctl_load(hctl);
   snd_ctl_elem_id_alloca(&id);
   snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
   snd_ctl_elem_id_set_name(id, param);  
   elem = snd_hctl_find_elem(hctl, id);
   if (!elem)
   {
      snd_hctl_close(hctl);
      return(-1);
   }
   snd_ctl_elem_info_alloca(&info);
   snd_hctl_elem_info(elem,info);
   type = snd_ctl_elem_info_get_type(info);
   snd_ctl_elem_value_alloca(&control);
   snd_ctl_elem_value_set_id(control, id);    
   switch(type)
   {
       case SND_CTL_ELEM_TYPE_INTEGER:
      snd_ctl_elem_value_set_integer(control, 0, v1);
      if (v2 > 0) snd_ctl_elem_value_set_integer(control, 1, v2);
      break;
       case SND_CTL_ELEM_TYPE_BOOLEAN:
      snd_ctl_elem_value_set_integer(control, 0, (v1 != 0));
      break;
   }
   if (snd_hctl_elem_write(elem, control))
   {
      snd_hctl_close(hctl);
      return(-1);
   }
   snd_hctl_close(hctl);
   return(0);
}

static void hid_set_outputs(struct usb_dev_handle *handle,
         unsigned char *outputs)
{
   usleep(1500);
   usb_control_msg(handle,
         USB_ENDPOINT_OUT + USB_TYPE_CLASS + USB_RECIP_INTERFACE,
         HID_REPORT_SET,
         0 + (HID_RT_OUTPUT << 8),
         C108_HID_INTERFACE,
         (char*)outputs, 4, 5000);
}

static void hid_get_inputs(struct usb_dev_handle *handle,
         unsigned char *inputs)
{
   usleep(1500);
   usb_control_msg(handle,
         USB_ENDPOINT_IN + USB_TYPE_CLASS + USB_RECIP_INTERFACE,
         HID_REPORT_GET,
         0 + (HID_RT_INPUT << 8),
         C108_HID_INTERFACE,
         (char*)inputs, 4, 5000);
}

static unsigned short read_eeprom(struct usb_dev_handle *handle, int addr)
{
   unsigned char buf[4];

   buf[0] = 0x80;
   buf[1] = 0;
   buf[2] = 0;
   buf[3] = 0x80 | (addr & 0x3f);
   hid_set_outputs(handle,buf);
   memset(buf,0,sizeof(buf));
   hid_get_inputs(handle,buf);
   return(buf[1] + (buf[2] << 8));
}

static void write_eeprom(struct usb_dev_handle *handle, int addr, 
   unsigned short data)
{

   unsigned char buf[4];

   buf[0] = 0x80;
   buf[1] = data & 0xff;
   buf[2] = data >> 8;
   buf[3] = 0xc0 | (addr & 0x3f);
   hid_set_outputs(handle,buf);
}

static unsigned short get_eeprom(struct usb_dev_handle *handle,
   unsigned short *buf)
{
int   i;
unsigned short cs;

   cs = 0xffff;
   for(i = EEPROM_START_ADDR; i < EEPROM_END_ADDR; i++)
   {
      cs += buf[i] = read_eeprom(handle,i);
   }
   return(cs);
}

static void put_eeprom(struct usb_dev_handle *handle,unsigned short *buf)
{
int   i;
unsigned short cs;

   cs = 0xffff;
   buf[EEPROM_MAGIC_ADDR] = EEPROM_MAGIC;
   for(i = EEPROM_START_ADDR; i < EEPROM_CS_ADDR; i++)
   {
      write_eeprom(handle,i,buf[i]);
      cs += buf[i];
   }
   buf[EEPROM_CS_ADDR] = (65535 - cs) + 1;
   write_eeprom(handle,i,buf[EEPROM_CS_ADDR]);
}

static struct usb_device *hid_device_init(char *desired_device)
{
    struct usb_bus *usb_bus;
    struct usb_device *dev;
    char devstr[200],str[200],desdev[200],*cp;
    int i;
    FILE *fp;

    usb_init();
    usb_find_busses();
    usb_find_devices();
    for (usb_bus = usb_busses;
         usb_bus;
         usb_bus = usb_bus->next) {
        for (dev = usb_bus->devices;
             dev;
             dev = dev->next) {
            if ((dev->descriptor.idVendor
                  == C108_VENDOR_ID) &&
                (dev->descriptor.idProduct
                  == C108_PRODUCT_ID))
      {
                        sprintf(devstr,"%s/%s", usb_bus->dirname,dev->filename);
         for(i = 0; i < 32; i++)
         {
            sprintf(str,"/proc/asound/card%d/usbbus",i);
            fp = fopen(str,"r");
            if (!fp) continue;
            if ((!fgets(desdev,sizeof(desdev) - 1,fp)) || (!desdev[0]))
            {
               fclose(fp);
               continue;
            }
            fclose(fp);
            if (desdev[strlen(desdev) - 1] == '\n')
                  desdev[strlen(desdev) -1 ] = 0;
            if (strcasecmp(desdev,devstr)) continue;
            if (i) sprintf(str,"/sys/class/sound/dsp%d/device",i);
            else strcpy(str,"/sys/class/sound/dsp/device");
            memset(desdev,0,sizeof(desdev));
            if (readlink(str,desdev,sizeof(desdev) - 1) == -1)
            {
               sprintf(str,"/sys/class/sound/controlC%d/device",i);
               memset(desdev,0,sizeof(desdev));
               if (readlink(str,desdev,sizeof(desdev) - 1) == -1) continue;
            }
            cp = strrchr(desdev,'/');
            if (cp) *cp = 0; else continue;
            cp = strrchr(desdev,'/');
            if (!cp) continue;
            cp++;
            break;
         }
         if (i >= 32) continue;
                        if (!strcmp(cp,desired_device)) return dev;
      }

        }
    }
    return NULL;
}

static int hid_device_mklist(void)
{
    struct usb_bus *usb_bus;
    struct usb_device *dev;
    char devstr[200],str[200],desdev[200],*cp;
    int i;
    FILE *fp;

    usb_device_list = ast_malloc(2);
    if (!usb_device_list) return -1;
    memset(usb_device_list,0,2);

    usb_init();
    usb_find_busses();
    usb_find_devices();
    for (usb_bus = usb_busses;
         usb_bus;
         usb_bus = usb_bus->next) {
        for (dev = usb_bus->devices;
             dev;
             dev = dev->next) {
            if ((dev->descriptor.idVendor
                  == C108_VENDOR_ID) &&
                (dev->descriptor.idProduct
                  == C108_PRODUCT_ID))
      {
                        sprintf(devstr,"%s/%s", usb_bus->dirname,dev->filename);
         for(i = 0;i < 32; i++)
         {
            sprintf(str,"/proc/asound/card%d/usbbus",i);
            fp = fopen(str,"r");
            if (!fp) continue;
            if ((!fgets(desdev,sizeof(desdev) - 1,fp)) || (!desdev[0]))
            {
               fclose(fp);
               continue;
            }
            fclose(fp);
            if (desdev[strlen(desdev) - 1] == '\n')
                  desdev[strlen(desdev) -1 ] = 0;
            if (strcasecmp(desdev,devstr)) continue;
            if (i) sprintf(str,"/sys/class/sound/dsp%d/device",i);
            else strcpy(str,"/sys/class/sound/dsp/device");
            memset(desdev,0,sizeof(desdev));
            if (readlink(str,desdev,sizeof(desdev) - 1) == -1)
            {
               sprintf(str,"/sys/class/sound/controlC%d/device",i);
               memset(desdev,0,sizeof(desdev));
               if (readlink(str,desdev,sizeof(desdev) - 1) == -1) continue;
            }
            cp = strrchr(desdev,'/');
            if (cp) *cp = 0; else continue;
            cp = strrchr(desdev,'/');
            if (!cp) continue;
            cp++;
            break;
         }
         if (i >= 32) return -1;
         usb_device_list = ast_realloc(usb_device_list,
            usb_device_list_size + 2 +
               strlen(cp));
         if (!usb_device_list) return -1;
         usb_device_list_size += strlen(cp) + 2;
         i = 0;
         while(usb_device_list[i])
         {
            i += strlen(usb_device_list + i) + 1;
         }
         strcat(usb_device_list + i,cp);
         usb_device_list[strlen(cp) + i + 1] = 0;
      }

        }
    }
    return 0;
}

/* returns internal formatted string from external one */
static int usb_get_usbdev(char *devstr)
{
int   i;
char  str[200],desdev[200],*cp;

   for(i = 0;i < 32; i++)
   {
      if (i) sprintf(str,"/sys/class/sound/dsp%d/device",i);
      else strcpy(str,"/sys/class/sound/dsp/device");
      memset(desdev,0,sizeof(desdev));
      if (readlink(str,desdev,sizeof(desdev) - 1) == -1)
      {
         sprintf(str,"/sys/class/sound/controlC%d/device",i);
         memset(desdev,0,sizeof(desdev));
         if (readlink(str,desdev,sizeof(desdev) - 1) == -1) continue;
      }
      cp = strrchr(desdev,'/');
      if (cp) *cp = 0; else continue;
      cp = strrchr(desdev,'/');
      if (!cp) continue;
      cp++;
      if (!strcasecmp(cp,devstr)) break;
   }
   if (i >= 32) return -1;
   return i;

}

static int usb_list_check(char *devstr)
{

char *s = usb_device_list;

   if (!s) return(0);
   while(*s)
   {
      if (!strcasecmp(s,devstr)) return(1);
      s += strlen(s) + 1;
   }
   return(0);
}


static int  hidhdwconfig(struct chan_usbradio_pvt *o)
{
   if(o->hdwtype==1)   //sphusb
   {
      o->hid_gpio_ctl      =  0x08; /* set GPIO4 to output mode */
      o->hid_gpio_ctl_loc  =  2;    /* For CTL of GPIO */
      o->hid_io_cor     =  4; /* GPIO3 is COR */
      o->hid_io_cor_loc =  1; /* GPIO3 is COR */
      o->hid_io_ctcss      =  2;    /* GPIO 2 is External CTCSS */
      o->hid_io_ctcss_loc =  1;  /* is GPIO 2 */
      o->hid_io_ptt     =  8;    /* GPIO 4 is PTT */
      o->hid_gpio_loc   =  1;    /* For ALL GPIO */
   }
   else if(o->hdwtype==0)  //dudeusb
   {
      o->hid_gpio_ctl      =  0x0c; /* set GPIO 3 & 4 to output mode */
      o->hid_gpio_ctl_loc  =  2;    /* For CTL of GPIO */
      o->hid_io_cor     =  2; /* VOLD DN is COR */
      o->hid_io_cor_loc =  0; /* VOL DN COR */
      o->hid_io_ctcss      =  2;    /* GPIO 2 is External CTCSS */
      o->hid_io_ctcss_loc =  1;  /* is GPIO 2 */
      o->hid_io_ptt     =  4;    /* GPIO 3 is PTT */
      o->hid_gpio_loc   =  1;    /* For ALL GPIO */
   }
   else if(o->hdwtype==3)  // custom version
   {
      o->hid_gpio_ctl      =  0x0c; /* set GPIO 3 & 4 to output mode */
      o->hid_gpio_ctl_loc  =  2;    /* For CTL of GPIO */
      o->hid_io_cor     =  2; /* VOLD DN is COR */
      o->hid_io_cor_loc =  0; /* VOL DN COR */
      o->hid_io_ctcss      =  2;    /* GPIO 2 is External CTCSS */
      o->hid_io_ctcss_loc =  1;  /* is GPIO 2 */
      o->hid_io_ptt     =  4;    /* GPIO 3 is PTT */
      o->hid_gpio_loc   =  1;    /* For ALL GPIO */
   }

   return 0;
}
/*
*/
static void kickptt(struct chan_usbradio_pvt *o)
{
   char c = 0;
   //printf("kickptt  %i  %i  %i\n",o->txkeyed,o->txchankey,o->txtestkey);
   if (!o) return;
   if (!o->pttkick) return;
   if (write(o->pttkick[1],&c,1) < 0) {
      ast_log(LOG_ERROR, "write() failed: %s\n", strerror(errno));
   }
}
/*
*/
static void *hidthread(void *arg)
{
   unsigned char buf[4],bufsave[4],keyed;
   char lastrx, txtmp;
   int res;
   struct usb_device *usb_dev;
   struct usb_dev_handle *usb_handle;
   struct chan_usbradio_pvt *o = (struct chan_usbradio_pvt *) arg;
   struct pollfd pfd = { .events = POLLIN };

   usb_dev = hid_device_init(o->devstr);
   if (usb_dev == NULL) {
      ast_log(LOG_ERROR,"USB HID device not found\n");
      pthread_exit(NULL);
   }
   usb_handle = usb_open(usb_dev);
   if (usb_handle == NULL) {
           ast_log(LOG_ERROR,"Not able to open USB device\n");
      pthread_exit(NULL);
   }
   if (usb_claim_interface(usb_handle,C108_HID_INTERFACE) < 0)
   {
       if (usb_detach_kernel_driver_np(usb_handle,C108_HID_INTERFACE) < 0) {
              ast_log(LOG_ERROR,"Not able to detach the USB device\n");
         pthread_exit(NULL);
      }
      if (usb_claim_interface(usb_handle,C108_HID_INTERFACE) < 0) {
              ast_log(LOG_ERROR,"Not able to claim the USB device\n");
         pthread_exit(NULL);
      }
   }
   memset(buf,0,sizeof(buf));
   buf[2] = o->hid_gpio_ctl;
   buf[1] = 0;
   hid_set_outputs(usb_handle,buf);
   memcpy(bufsave,buf,sizeof(buf));
   if (pipe(o->pttkick) == -1)
   {
       ast_log(LOG_ERROR,"Not able to create pipe\n");
      pthread_exit(NULL);
   }
   traceusb1(("hidthread: Starting normally on %s!!\n",o->name));
   lastrx = 0;
   // popen 
   while (!o->stophid) {
      pfd.fd = o->pttkick[0];
      pfd.revents = 0;

      res = ast_poll(&pfd, 1, 50);
      if (res < 0) {
         ast_log(LOG_WARNING, "poll() failed: %s\n", strerror(errno));
         usleep(10000);
         continue;
      }
      if (pfd.revents & POLLIN) {
         char c;

         if (read(o->pttkick[0], &c, 1) < 0) {
            ast_log(LOG_ERROR, "read() failed: %s\n", strerror(errno));
         }
      }
      if (o->wanteeprom) {
         ast_mutex_lock(&o->eepromlock);
         if (o->eepromctl == 1) { /* to read */
            /* if CS okay */
            if (!get_eeprom(usb_handle, o->eeprom)) {
               if (o->eeprom[EEPROM_MAGIC_ADDR] != EEPROM_MAGIC) {
                  ast_log(LOG_NOTICE, "UNSUCCESSFUL: EEPROM MAGIC NUMBER BAD on channel %s\n", o->name);
               } else {
                  o->rxmixerset = o->eeprom[EEPROM_RXMIXERSET];
                  o->txmixaset = o->eeprom[EEPROM_TXMIXASET];
                  o->txmixbset = o->eeprom[EEPROM_TXMIXBSET];
                  memcpy(&o->rxvoiceadj, &o->eeprom[EEPROM_RXVOICEADJ], sizeof(float));
                  memcpy(&o->rxctcssadj, &o->eeprom[EEPROM_RXCTCSSADJ], sizeof(float));
                  o->txctcssadj = o->eeprom[EEPROM_TXCTCSSADJ];
                  o->rxsquelchadj = o->eeprom[EEPROM_RXSQUELCHADJ];
                  ast_log(LOG_NOTICE,"EEPROM Loaded on channel %s\n",o->name);
               }
            } else {
               ast_log(LOG_NOTICE, "USB Adapter has no EEPROM installed or Checksum BAD on channel %s\n", o->name);
            }
            hid_set_outputs(usb_handle,bufsave);
         }
         if (o->eepromctl == 2) { /* to write */
            put_eeprom(usb_handle,o->eeprom);
            hid_set_outputs(usb_handle,bufsave);
            ast_log(LOG_NOTICE, "USB Parameters written to EEPROM on %s\n", o->name);
         }
         o->eepromctl = 0;
         ast_mutex_unlock(&o->eepromlock);
      }
      buf[o->hid_gpio_ctl_loc] = o->hid_gpio_ctl;
      hid_get_inputs(usb_handle,buf);
      keyed = !(buf[o->hid_io_cor_loc] & o->hid_io_cor);
      if (keyed != o->rxhidsq) {
         if (o->debuglevel) {
            printf("chan_usbradio() hidthread: update rxhidsq = %d\n", keyed);
         }
         o->rxhidsq=keyed;
      }

      /* if change in tx state as controlled by xpmr */
      txtmp = o->pmrChan->txPttOut;

      if (o->lasttx != txtmp) {
         o->pmrChan->txPttHid = o->lasttx = txtmp;
         if (o->debuglevel) {
            ast_debug(0, "hidthread: tx set to %d\n", txtmp);
         }
         buf[o->hid_gpio_loc] = 0;
         if (!o->invertptt) {
            if (txtmp) {
               buf[o->hid_gpio_loc] = o->hid_io_ptt;
            }
         } else {
            if (!txtmp) {
               buf[o->hid_gpio_loc] = o->hid_io_ptt;
            }
         }
         buf[o->hid_gpio_ctl_loc] = o->hid_gpio_ctl;
         memcpy(bufsave, buf, sizeof(buf));
         hid_set_outputs(usb_handle, buf);
      }
      time(&o->lasthidtime);
   }
   buf[o->hid_gpio_loc] = 0;
   if (o->invertptt) {
      buf[o->hid_gpio_loc] = o->hid_io_ptt;
   }
   buf[o->hid_gpio_ctl_loc] = o->hid_gpio_ctl;
   hid_set_outputs(usb_handle, buf);
   pthread_exit(0);
}

/*
 * returns a pointer to the descriptor with the given name
 */
static struct chan_usbradio_pvt *find_desc(const char *dev)
{
   struct chan_usbradio_pvt *o = NULL;

   if (!dev)
      ast_log(LOG_WARNING, "null dev\n");

   for (o = usbradio_default.next; o && o->name && dev && strcmp(o->name, dev) != 0; o = o->next);
   if (!o)
   {
      ast_log(LOG_WARNING, "could not find <%s>\n", dev ? dev : "--no-device--");
   }

   return o;
}

static struct chan_usbradio_pvt *find_desc_usb(char *devstr)
{
   struct chan_usbradio_pvt *o = NULL;

   if (!devstr)
      ast_log(LOG_WARNING, "null dev\n");

   for (o = usbradio_default.next; o && devstr && strcmp(o->devstr, devstr) != 0; o = o->next);

   return o;
}

/*
 * split a string in extension-context, returns pointers to malloc'ed
 * strings.
 * If we do not have 'overridecontext' then the last @ is considered as
 * a context separator, and the context is overridden.
 * This is usually not very necessary as you can play with the dialplan,
 * and it is nice not to need it because you have '@' in SIP addresses.
 * Return value is the buffer address.
 */
#if   0
static char *ast_ext_ctx(const char *src, char **ext, char **ctx)
{
   struct chan_usbradio_pvt *o = find_desc(usbradio_active);

   if (ext == NULL || ctx == NULL)
      return NULL;         /* error */

   *ext = *ctx = NULL;

   if (src && *src != '\0')
      *ext = ast_strdup(src);

   if (*ext == NULL)
      return NULL;

   if (!o->overridecontext) {
      /* parse from the right */
      *ctx = strrchr(*ext, '@');
      if (*ctx)
         *(*ctx)++ = '\0';
   }

   return *ext;
}
#endif

/*
 * Returns the number of blocks used in the audio output channel
 */
static int used_blocks(struct chan_usbradio_pvt *o)
{
   struct audio_buf_info info;

   if (ioctl(o->sounddev, SNDCTL_DSP_GETOSPACE, &info)) {
      if (!(o->warned & WARN_used_blocks)) {
         ast_log(LOG_WARNING, "Error reading output space\n");
         o->warned |= WARN_used_blocks;
      }
      return 1;
   }

   if (o->total_blocks == 0) {
      if (0)               /* debugging */
         ast_log(LOG_WARNING, "fragtotal %d size %d avail %d\n", info.fragstotal, info.fragsize, info.fragments);
      o->total_blocks = info.fragments;
   }

   return o->total_blocks - info.fragments;
}

/* Write an exactly FRAME_SIZE sized frame */
static int soundcard_writeframe(struct chan_usbradio_pvt *o, short *data)
{
   int res;

   if (o->sounddev < 0)
      setformat(o, O_RDWR);
   if (o->sounddev < 0)
      return 0;            /* not fatal */
   //  maw maw sph !!! may or may not be a good thing
   //  drop the frame if not transmitting, this keeps from gradually
   //  filling the buffer when asterisk clock > usb sound clock
   if(!o->pmrChan->txPttIn && !o->pmrChan->txPttOut)
   {
      //return 0;
   }
   /*
    * Nothing complex to manage the audio device queue.
    * If the buffer is full just drop the extra, otherwise write.
    * XXX in some cases it might be useful to write anyways after
    * a number of failures, to restart the output chain.
    */
   res = used_blocks(o);
   if (res > o->queuesize) {  /* no room to write a block */
       // ast_log(LOG_WARNING, "sound device write buffer overflow\n");
      if (o->w_errors++ == 0 && (usbradio_debug & 0x4))
         ast_log(LOG_WARNING, "write: used %d blocks (%d)\n", res, o->w_errors);
      return 0;
   }
   o->w_errors = 0;

   return write(o->sounddev, ((void *) data), FRAME_SIZE * 2 * 12);
}

#ifndef  NEW_ASTERISK

/*
 * Handler for 'sound writable' events from the sound thread.
 * Builds a frame from the high level description of the sounds,
 * and passes it to the audio device.
 * The actual sound is made of 1 or more sequences of sound samples
 * (s->datalen, repeated to make s->samplen samples) followed by
 * s->silencelen samples of silence. The position in the sequence is stored
 * in o->sampsent, which goes between 0 .. s->samplen+s->silencelen.
 * In case we fail to write a frame, don't update o->sampsent.
 */
static void send_sound(struct chan_usbradio_pvt *o)
{
   short myframe[FRAME_SIZE];
   int ofs, l, start;
   int l_sampsent = o->sampsent;
   struct sound *s;

   if (o->cursound < 0)    /* no sound to send */
      return;

   s = &sounds[o->cursound];

   for (ofs = 0; ofs < FRAME_SIZE; ofs += l) {
      l = s->samplen - l_sampsent;  /* # of available samples */
      if (l > 0) {
         start = l_sampsent % s->datalen; /* source offset */
         if (l > FRAME_SIZE - ofs)  /* don't overflow the frame */
            l = FRAME_SIZE - ofs;
         if (l > s->datalen - start)   /* don't overflow the source */
            l = s->datalen - start;
         memmove(myframe + ofs, s->data + start, l * 2);
         if (0)
            ast_log(LOG_WARNING, "send_sound sound %d/%d of %d into %d\n", l_sampsent, l, s->samplen, ofs);
         l_sampsent += l;
      } else {          /* end of samples, maybe some silence */
         static const short silence[FRAME_SIZE] = { 0, };

         l += s->silencelen;
         if (l > 0) {
            if (l > FRAME_SIZE - ofs)
               l = FRAME_SIZE - ofs;
            memmove(myframe + ofs, silence, l * 2);
            l_sampsent += l;
         } else {       /* silence is over, restart sound if loop */
            if (s->repeat == 0) {   /* last block */
               o->cursound = -1;
               o->nosound = 0;   /* allow audio data */
               if (ofs < FRAME_SIZE)   /* pad with silence */
                  memmove(myframe + ofs, silence, (FRAME_SIZE - ofs) * 2);
            }
            l_sampsent = 0;
         }
      }
   }
   l = soundcard_writeframe(o, myframe);
   if (l > 0)
      o->sampsent = l_sampsent;  /* update status */
}

static void *sound_thread(void *arg)
{
   char ign[4096];
   struct chan_usbradio_pvt *o = (struct chan_usbradio_pvt *) arg;

   /*
    * Just in case, kick the driver by trying to read from it.
    * Ignore errors - this read is almost guaranteed to fail.
    */
   read(o->sounddev, ign, sizeof(ign));
   for (;;) {
      struct pollfd pfd[2] = { { .fd = o->sndcmd[0], .events = POLLIN }, { .fd = o->sounddev } };
      int res;

      if (o->cursound > -1 && o->sounddev < 0) {
         setformat(o, O_RDWR);   /* need the channel, try to reopen */
      } else if (o->cursound == -1 && o->owner == NULL) {
         setformat(o, O_CLOSE);  /* can close */
      }
      if (o->sounddev > -1) {
         if (!o->owner) {  /* no one owns the audio, so we must drain it */
            pfd[1].events = POLLIN;
         }
         if (o->cursound > -1) {
            pfd[1].events |= POLLOUT;
         }
      }
      res = ast_poll(pfd, o->sounddev > -1 ? 2 : 1, -1);
      if (res < 1) {
         ast_log(LOG_WARNING, "poll failed: %s\n", strerror(errno));
         sleep(1);
         continue;
      }
      if (pfd[0].revents & POLLIN) {
         /* read which sound to play from the pipe */
         int i, what = -1;

         read(o->sndcmd[0], &what, sizeof(what));
         for (i = 0; sounds[i].ind != -1; i++) {
            if (sounds[i].ind == what) {
               o->cursound = i;
               o->sampsent = 0;
               o->nosound = 1;   /* block audio from pbx */
               break;
            }
         }
         if (sounds[i].ind == -1) {
            ast_log(LOG_WARNING, "invalid sound index: %d\n", what);
         }
      }
      if (o->sounddev > -1) {
         if (pfd[1].revents & POLLIN) { /* read and ignore errors */
            read(o->sounddev, ign, sizeof(ign)); 
         }
         if (pfd[1].revents & POLLOUT) {
            send_sound(o);
         }
      }
   }
   return NULL;            /* Never reached */
}

#endif

/*
 * reset and close the device if opened,
 * then open and initialize it in the desired mode,
 * trigger reads and writes so we can start using it.
 */
static int setformat(struct chan_usbradio_pvt *o, int mode)
{
   int fmt, desired, res, fd;
   char device[100];

   if (o->sounddev >= 0) {
      ioctl(o->sounddev, SNDCTL_DSP_RESET, 0);
      close(o->sounddev);
      o->duplex = M_UNSET;
      o->sounddev = -1;
   }
   if (mode == O_CLOSE)    /* we are done */
      return 0;
   o->lastopen = ast_tvnow();
   strcpy(device,"/dev/dsp");
   if (o->devicenum)
      sprintf(device,"/dev/dsp%d",o->devicenum);
   fd = o->sounddev = open(device, mode | O_NONBLOCK);
   if (fd < 0) {
      ast_log(LOG_WARNING, "Unable to re-open DSP device %d: %s\n", o->devicenum, strerror(errno));
      return -1;
   }
   if (o->owner)
      o->owner->fds[0] = fd;

#if __BYTE_ORDER == __LITTLE_ENDIAN
   fmt = AFMT_S16_LE;
#else
   fmt = AFMT_S16_BE;
#endif
   res = ioctl(fd, SNDCTL_DSP_SETFMT, &fmt);
   if (res < 0) {
      ast_log(LOG_WARNING, "Unable to set format to 16-bit signed\n");
      return -1;
   }
   switch (mode) {
      case O_RDWR:
         res = ioctl(fd, SNDCTL_DSP_SETDUPLEX, 0);
         /* Check to see if duplex set (FreeBSD Bug) */
         res = ioctl(fd, SNDCTL_DSP_GETCAPS, &fmt);
         if (res == 0 && (fmt & DSP_CAP_DUPLEX)) {
            ast_verb(2, "Console is full duplex\n");
            o->duplex = M_FULL;
         };
         break;
      case O_WRONLY:
         o->duplex = M_WRITE;
         break;
      case O_RDONLY:
         o->duplex = M_READ;
         break;
   }

   fmt = 1;
   res = ioctl(fd, SNDCTL_DSP_STEREO, &fmt);
   if (res < 0) {
      ast_log(LOG_WARNING, "Failed to set audio device to mono\n");
      return -1;
   }
   fmt = desired = 48000;                    /* 8000 Hz desired */
   res = ioctl(fd, SNDCTL_DSP_SPEED, &fmt);

   if (res < 0) {
      ast_log(LOG_WARNING, "Failed to set audio device to mono\n");
      return -1;
   }
   if (fmt != desired) {
      if (!(o->warned & WARN_speed)) {
         ast_log(LOG_WARNING,
             "Requested %d Hz, got %d Hz -- sound may be choppy\n",
             desired, fmt);
         o->warned |= WARN_speed;
      }
   }
   /*
    * on Freebsd, SETFRAGMENT does not work very well on some cards.
    * Default to use 256 bytes, let the user override
    */
   if (o->frags) {
      fmt = o->frags;
      res = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &fmt);
      if (res < 0) {
         if (!(o->warned & WARN_frag)) {
            ast_log(LOG_WARNING,
               "Unable to set fragment size -- sound may be choppy\n");
            o->warned |= WARN_frag;
         }
      }
   }
   /* on some cards, we need SNDCTL_DSP_SETTRIGGER to start outputting */
   res = PCM_ENABLE_INPUT | PCM_ENABLE_OUTPUT;
   res = ioctl(fd, SNDCTL_DSP_SETTRIGGER, &res);
   /* it may fail if we are in half duplex, never mind */
   return 0;
}

/*
 * some of the standard methods supported by channels.
 */
static int usbradio_digit_begin(struct ast_channel *c, char digit)
{
   return 0;
}

static int usbradio_digit_end(struct ast_channel *c, char digit, unsigned int duration)
{
   /* no better use for received digits than print them */
   ast_verbose(" << Console Received digit %c of duration %u ms >> \n", 
      digit, duration);
   return 0;
}
/*
   SETFREQ - sets spi programmable xcvr
   SETCHAN - sets binary parallel xcvr
*/
static int usbradio_text(struct ast_channel *c, const char *text)
{
   struct chan_usbradio_pvt *o = find_desc(usbradio_active);
   double tx,rx;
   char cnt,rxs[16],txs[16],txpl[16],rxpl[16];
   char pwr,*cmd;

   cmd = alloca(strlen(text) + 10);

   /* print received messages */
   if(o->debuglevel)ast_verbose(" << Console Received usbradio text %s >> \n", text);

   cnt = sscanf(text, "%300s %15s %15s %15s %15s %1c", cmd, rxs, txs, rxpl, txpl, &pwr);

   if (strcmp(cmd,"SETCHAN")==0)
    { 
      u8 chan;
      chan=strtod(rxs,NULL);
      ppbinout(chan);
        if(o->debuglevel)ast_log(LOG_NOTICE,"parse usbradio SETCHAN cmd: %s chan: %i\n",text,chan);
        return 0;
    }
   
    if (cnt < 6)
    {
       ast_log(LOG_ERROR,"Cannot parse usbradio text: %s\n",text);
       return 0;
    }
   else
   {
      if(o->debuglevel)ast_verbose(" << %s %s %s %s %s %c >> \n", cmd,rxs,txs,rxpl,txpl,pwr);   
   }
    
    if (strcmp(cmd,"SETFREQ")==0)
    {
        if(o->debuglevel)ast_log(LOG_NOTICE,"parse usbradio SETFREQ cmd: %s\n",text);
      tx=strtod(txs,NULL);
      rx=strtod(rxs,NULL);
      o->set_txfreq = round(tx * (double)1000000);
      o->set_rxfreq = round(rx * (double)1000000);
      o->pmrChan->txpower = (pwr == 'H');
      strcpy(o->set_rxctcssfreqs,rxpl);
      strcpy(o->set_txctcssfreqs,txpl);
   
      o->b.remoted=1;
      xpmr_config(o);
        return 0;
    }
   ast_log(LOG_ERROR,"Cannot parse usbradio cmd: %s\n",text);
   return 0;
}

/* Play ringtone 'x' on device 'o' */
static void ring(struct chan_usbradio_pvt *o, int x)
{
#ifndef  NEW_ASTERISK
   write(o->sndcmd[1], &x, sizeof(x));
#endif
}

/*
 * handler for incoming calls. Either autoanswer, or start ringing
 */
static int usbradio_call(struct ast_channel *c, const char *dest, int timeout)
{
   struct chan_usbradio_pvt *o = c->tech_pvt;

   o->stophid = 0;
   time(&o->lasthidtime);
   ast_pthread_create_background(&o->hidthread, NULL, hidthread, o);
   ast_setstate(c, AST_STATE_UP);
   return 0;
}

/*
 * remote side answered the phone
 */
static int usbradio_answer(struct ast_channel *c)
{
#ifndef  NEW_ASTERISK
   struct chan_usbradio_pvt *o = c->tech_pvt;
#endif

   ast_setstate(c, AST_STATE_UP);
#ifndef  NEW_ASTERISK
   o->cursound = -1;
   o->nosound = 0;
#endif
   return 0;
}

static int usbradio_hangup(struct ast_channel *c)
{
   struct chan_usbradio_pvt *o = c->tech_pvt;

   //ast_log(LOG_NOTICE, "usbradio_hangup()\n");
#ifndef  NEW_ASTERISK
   o->cursound = -1;
   o->nosound = 0;
#endif
   c->tech_pvt = NULL;
   o->owner = NULL;
   ast_module_unref(ast_module_info->self);
   if (o->hookstate) {
      if (o->autoanswer || o->autohangup) {
         /* Assume auto-hangup too */
         o->hookstate = 0;
         setformat(o, O_CLOSE);
      } else {
         /* Make congestion noise */
         ring(o, AST_CONTROL_CONGESTION);
      }
   }
   o->stophid = 1;
   pthread_join(o->hidthread,NULL);
   return 0;
}


/* used for data coming from the network */
static int usbradio_write(struct ast_channel *c, struct ast_frame *f)
{
   struct chan_usbradio_pvt *o = c->tech_pvt;

   traceusb2(("usbradio_write() o->nosound= %i\n",o->nosound));

#ifndef  NEW_ASTERISK
   /* Immediately return if no sound is enabled */
   if (o->nosound)
      return 0;
   /* Stop any currently playing sound */
   o->cursound = -1;
#endif
   /*
    * we could receive a block which is not a multiple of our
    * FRAME_SIZE, so buffer it locally and write to the device
    * in FRAME_SIZE chunks.
    * Keep the residue stored for future use.
    */

   #if DEBUG_CAPTURES == 1 // to write input data to a file   datalen=320
   if (ftxcapraw && o->b.txcapraw)
   {
      i16 i, tbuff[f->datalen];
      for(i=0;i<f->datalen;i+=2)
      {
         tbuff[i]= ((i16*)(f->data.ptr))[i/2];
         tbuff[i+1]= o->txkeyed*M_Q13;
      }
      if (fwrite(tbuff,2,f->datalen,ftxcapraw) != f->datalen) {
         ast_log(LOG_ERROR, "write() failed: %s\n", strerror(errno));
      }
      //fwrite(f->data,1,f->datalen,ftxcapraw);
   }
   #endif

   // maw just take the data from the network and save it for PmrRx processing

   PmrTx(o->pmrChan,(i16*)f->data.ptr);
   
   return 0;
}

static struct ast_frame *usbradio_read(struct ast_channel *c)
{
   int res, src, datalen, oldpttout;
   int cd,sd;
   struct chan_usbradio_pvt *o = c->tech_pvt;
   struct ast_frame *f = &o->read_f,*f1;
   struct ast_frame wf = { AST_FRAME_CONTROL };
   time_t now;

   traceusb2(("usbradio_read()\n"));

   if (o->lasthidtime)
   {
      time(&now);
      if ((now - o->lasthidtime) > 3)
      {
         ast_log(LOG_ERROR,"HID process has died or something!!\n");
         return NULL;
      }
   }
   /* XXX can be simplified returning &ast_null_frame */
   /* prepare a NULL frame in case we don't have enough data to return */
   memset(f, '\0', sizeof(struct ast_frame));
   f->frametype = AST_FRAME_NULL;
   f->src = usbradio_tech.type;

   res = read(o->sounddev, o->usbradio_read_buf + o->readpos, 
      sizeof(o->usbradio_read_buf) - o->readpos);
   if (res < 0)            /* audio data not ready, return a NULL frame */
   {
      if (errno != EAGAIN) return NULL;
      if (o->readerrs++ > READERR_THRESHOLD)
      {
         ast_log(LOG_ERROR,"Stuck USB read channel [%s], un-sticking it!\n",o->name);
         o->readerrs = 0;
         return NULL;
      }
      if (o->readerrs == 1) 
         ast_log(LOG_WARNING,"Possibly stuck USB read channel. [%s]\n",o->name);
      return f;
   }
   if (o->readerrs) ast_log(LOG_WARNING,"Nope, USB read channel [%s] wasn't stuck after all.\n",o->name);
   o->readerrs = 0;
   o->readpos += res;
   if (o->readpos < sizeof(o->usbradio_read_buf))  /* not enough samples */
      return f;

   if (o->mute)
      return f;

   #if DEBUG_CAPTURES == 1
   if ((o->b.rxcapraw && frxcapraw) && (fwrite((o->usbradio_read_buf + AST_FRIENDLY_OFFSET),1,FRAME_SIZE * 2 * 2 * 6,frxcapraw) != FRAME_SIZE * 2 * 2 * 6)) {
      ast_log(LOG_ERROR, "fwrite() failed: %s\n", strerror(errno));
   }
   #endif

   #if 1
   if(o->txkeyed||o->txtestkey)
   {
      if(!o->pmrChan->txPttIn)
      {
         o->pmrChan->txPttIn=1;
         if(o->debuglevel) ast_log(LOG_NOTICE,"txPttIn = %i, chan %s\n",o->pmrChan->txPttIn,ast_channel_name(o->owner));
      }
   }
   else if(o->pmrChan->txPttIn)
   {
      o->pmrChan->txPttIn=0;
      if(o->debuglevel) ast_log(LOG_NOTICE,"txPttIn = %i, chan %s\n",o->pmrChan->txPttIn,ast_channel_name(o->owner));
   }
   oldpttout = o->pmrChan->txPttOut;

   PmrRx(         o->pmrChan, 
         (i16 *)(o->usbradio_read_buf + AST_FRIENDLY_OFFSET),
         (i16 *)(o->usbradio_read_buf_8k + AST_FRIENDLY_OFFSET),
         (i16 *)(o->usbradio_write_buf_1));

   if (oldpttout != o->pmrChan->txPttOut)
   {
      if(o->debuglevel) ast_log(LOG_NOTICE,"txPttOut = %i, chan %s\n",o->pmrChan->txPttOut,ast_channel_name(o->owner));
      kickptt(o);
   }

   #if 0 // to write 48KS/s stereo tx data to a file
   if (!ftxoutraw) ftxoutraw = fopen(TX_CAP_OUT_FILE,"w");
   if (ftxoutraw) fwrite(o->usbradio_write_buf_1,1,FRAME_SIZE * 2 * 6,ftxoutraw);
   #endif

   #if DEBUG_CAPTURES == 1 && XPMR_DEBUG0 == 1
    if ((o->b.txcap2 && ftxcaptrace) && (fwrite((o->pmrChan->ptxDebug),1,FRAME_SIZE * 2 * 16,ftxcaptrace) != FRAME_SIZE * 2 * 16)) {
      ast_log(LOG_ERROR, "fwrite() failed: %s\n", strerror(errno));
   }
   #endif
   
   // 160 samples * 2 bytes/sample * 2 chan * 6x oversampling to 48KS/s
   datalen = FRAME_SIZE * 24;  
   src = 0;             /* read position into f->data */
   while (src < datalen) 
   {
      /* Compute spare room in the buffer */
      int l = sizeof(o->usbradio_write_buf) - o->usbradio_write_dst;

      if (datalen - src >= l) 
      {  
         /* enough to fill a frame */
         memcpy(o->usbradio_write_buf + o->usbradio_write_dst, o->usbradio_write_buf_1 + src, l);
         soundcard_writeframe(o, (short *) o->usbradio_write_buf);
         src += l;
         o->usbradio_write_dst = 0;
      } 
      else 
      {           
         /* copy residue */
         l = datalen - src;
         memcpy(o->usbradio_write_buf + o->usbradio_write_dst, o->usbradio_write_buf_1 + src, l);
         src += l;         /* but really, we are done */
         o->usbradio_write_dst += l;
      }
   }
   #else
   static FILE *hInput;
   i16 iBuff[FRAME_SIZE*2*6];

   o->pmrChan->b.rxCapture=1;

   if(!hInput)
   {
      hInput  = fopen("/usr/src/xpmr/testdata/rx_in.pcm","r");
      if(!hInput)
      {
         printf(" Input Data File Not Found.\n");
         return 0;
      }
   }

   if(0==fread((void *)iBuff,2,FRAME_SIZE*2*6,hInput))exit;

   PmrRx(  o->pmrChan, 
         (i16 *)iBuff,
         (i16 *)(o->usbradio_read_buf_8k + AST_FRIENDLY_OFFSET));

   #endif

   #if 0
   if (!frxoutraw) frxoutraw = fopen(RX_CAP_OUT_FILE,"w");
    if (frxoutraw) fwrite((o->usbradio_read_buf_8k + AST_FRIENDLY_OFFSET),1,FRAME_SIZE * 2,frxoutraw);
   #endif

   #if DEBUG_CAPTURES == 1 && XPMR_DEBUG0 == 1
    if ((frxcaptrace && o->b.rxcap2 && o->pmrChan->b.radioactive) && (fwrite((o->pmrChan->prxDebug),1,FRAME_SIZE * 2 * 16,frxcaptrace) != FRAME_SIZE * 2 * 16 )) {
      ast_log(LOG_ERROR, "fwrite() failed: %s\n", strerror(errno));
   }
   #endif

   cd = 0;
   if(o->rxcdtype==CD_HID && (o->pmrChan->rxExtCarrierDetect!=o->rxhidsq))
      o->pmrChan->rxExtCarrierDetect=o->rxhidsq;
   
   if(o->rxcdtype==CD_HID_INVERT && (o->pmrChan->rxExtCarrierDetect==o->rxhidsq))
      o->pmrChan->rxExtCarrierDetect=!o->rxhidsq;
      
   if( (o->rxcdtype==CD_HID        && o->rxhidsq)                  ||
      (o->rxcdtype==CD_HID_INVERT && !o->rxhidsq)                 ||
      (o->rxcdtype==CD_XPMR_NOISE && o->pmrChan->rxCarrierDetect) ||
      (o->rxcdtype==CD_XPMR_VOX   && o->pmrChan->rxCarrierDetect)
     )
   {
      if (!o->pmrChan->txPttOut || o->radioduplex)cd=1;  
   }
   else
   {
      cd=0;
   }

   if(cd!=o->rxcarrierdetect)
   {
      o->rxcarrierdetect=cd;
      if(o->debuglevel) ast_log(LOG_NOTICE,"rxcarrierdetect = %i, chan %s\n",cd,ast_channel_name(o->owner));
      // printf("rxcarrierdetect = %i, chan %s\n",res,o->owner->name);
   }

   if(o->pmrChan->b.ctcssRxEnable && o->pmrChan->rxCtcss->decode!=o->rxctcssdecode)
   {
      if(o->debuglevel)ast_log(LOG_NOTICE,"rxctcssdecode = %i, chan %s\n",o->pmrChan->rxCtcss->decode,ast_channel_name(o->owner));
      // printf("rxctcssdecode = %i, chan %s\n",o->pmrChan->rxCtcss->decode,o->owner->name);
      o->rxctcssdecode=o->pmrChan->rxCtcss->decode;
      strcpy(o->rxctcssfreq, o->pmrChan->rxctcssfreq);
   }

   #ifndef HAVE_XPMRX
   if(  !o->pmrChan->b.ctcssRxEnable ||
      ( o->pmrChan->b.ctcssRxEnable && 
         o->pmrChan->rxCtcss->decode>CTCSS_NULL && 
         o->pmrChan->smode==SMODE_CTCSS )  
   )
   {
      sd=1; 
   }
   else
   {
      sd=0;
   }
   #else
   if( (!o->pmrChan->b.ctcssRxEnable && !o->pmrChan->b.dcsRxEnable && !o->pmrChan->b.lmrRxEnable) ||
      ( o->pmrChan->b.ctcssRxEnable && 
         o->pmrChan->rxCtcss->decode>CTCSS_NULL && 
         o->pmrChan->smode==SMODE_CTCSS ) ||
      ( o->pmrChan->b.dcsRxEnable && 
         o->pmrChan->decDcs->decode > 0 &&
         o->pmrChan->smode==SMODE_DCS )
   )
   {
      sd=1; 
   }
   else
   {
      sd=0;
   }

   if(o->pmrChan->decDcs->decode!=o->rxdcsdecode)
   {                                      
      if(o->debuglevel)ast_log(LOG_NOTICE,"rxdcsdecode = %s, chan %s\n",o->pmrChan->rxctcssfreq,ast_channel_name(o->owner));
      // printf("rxctcssdecode = %i, chan %s\n",o->pmrChan->rxCtcss->decode,o->owner->name);
      o->rxdcsdecode=o->pmrChan->decDcs->decode;
      strcpy(o->rxctcssfreq, o->pmrChan->rxctcssfreq);
   }                                                                      

   if(o->pmrChan->rptnum && (o->pmrChan->pLsdCtl->cs[o->pmrChan->rptnum].b.rxkeyed != o->rxlsddecode))
   {                       
      if(o->debuglevel)ast_log(LOG_NOTICE,"rxLSDecode = %s, chan %s\n",o->pmrChan->rxctcssfreq,ast_channel_name(o->owner));
      o->rxlsddecode=o->pmrChan->pLsdCtl->cs[o->pmrChan->rptnum].b.rxkeyed;
      strcpy(o->rxctcssfreq, o->pmrChan->rxctcssfreq);
   }

   if( (o->pmrChan->rptnum>0 && o->pmrChan->smode==SMODE_LSD && o->pmrChan->pLsdCtl->cs[o->pmrChan->rptnum].b.rxkeyed)||
       (o->pmrChan->smode==SMODE_DCS && o->pmrChan->decDcs->decode>0) )
   {
      sd=1;
   }
   #endif

   if ( cd && sd )
   {
      //if(!o->rxkeyed)o->pmrChan->dd.b.doitnow=1;
      if(!o->rxkeyed && o->debuglevel)ast_log(LOG_NOTICE,"o->rxkeyed = 1, chan %s\n", ast_channel_name(o->owner));
      o->rxkeyed = 1;
   }
   else 
   {
      //if(o->rxkeyed)o->pmrChan->dd.b.doitnow=1;
      if(o->rxkeyed && o->debuglevel)ast_log(LOG_NOTICE,"o->rxkeyed = 0, chan %s\n",ast_channel_name(o->owner));
      o->rxkeyed = 0;
   }

   // provide rx signal detect conditions
   if (o->lastrx && (!o->rxkeyed))
   {
      o->lastrx = 0;
      //printf("AST_CONTROL_RADIO_UNKEY\n");
      wf.subclass.integer = AST_CONTROL_RADIO_UNKEY;
      ast_queue_frame(o->owner, &wf);
   }
   else if ((!o->lastrx) && (o->rxkeyed))
   {
      o->lastrx = 1;
      //printf("AST_CONTROL_RADIO_KEY\n");
      wf.subclass.integer = AST_CONTROL_RADIO_KEY;
      if(o->rxctcssdecode)    
        {
           wf.data.ptr = o->rxctcssfreq;
           wf.datalen = strlen(o->rxctcssfreq) + 1;
         TRACEO(1,("AST_CONTROL_RADIO_KEY text=%s\n",o->rxctcssfreq));
        }
      ast_queue_frame(o->owner, &wf);
   }

   o->readpos = AST_FRIENDLY_OFFSET;   /* reset read pointer for next frame */
   if (c->_state != AST_STATE_UP)   /* drop data if frame is not up */
      return f;
   /* ok we can build and deliver the frame to the caller */
   f->frametype = AST_FRAME_VOICE;
   ast_format_set(&f->subclass.format, AST_FORMAT_SLINEAR, 0);
   f->samples = FRAME_SIZE;
   f->datalen = FRAME_SIZE * 2;
   f->data.ptr = o->usbradio_read_buf_8k + AST_FRIENDLY_OFFSET;
   if (o->boost != BOOST_SCALE) {   /* scale and clip values */
      int i, x;
      int16_t *p = (int16_t *) f->data.ptr;
      for (i = 0; i < f->samples; i++) {
         x = (p[i] * o->boost) / BOOST_SCALE;
         if (x > 32767)
            x = 32767;
         else if (x < -32768)
            x = -32768;
         p[i] = x;
      }
   }

   f->offset = AST_FRIENDLY_OFFSET;
   if (o->dsp)
   {
       f1 = ast_dsp_process(c,o->dsp,f);
       if ((f1->frametype == AST_FRAME_DTMF_END) ||
         (f1->frametype == AST_FRAME_DTMF_BEGIN))
       {
      if ((f1->subclass.integer == 'm') || (f1->subclass.integer == 'u'))
      {
         f1->frametype = AST_FRAME_NULL;
         f1->subclass.integer = 0;
         return(f1);
      }
      if (f1->frametype == AST_FRAME_DTMF_END)
         ast_log(LOG_NOTICE, "Got DTMF char %c\n", f1->subclass.integer);
      return(f1);
       }
   }
   return f;
}

static int usbradio_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
{
   struct chan_usbradio_pvt *o = newchan->tech_pvt;
   ast_log(LOG_WARNING,"usbradio_fixup()\n");
   o->owner = newchan;
   return 0;
}

static int usbradio_indicate(struct ast_channel *c, int cond, const void *data, size_t datalen)
{
   struct chan_usbradio_pvt *o = c->tech_pvt;
   int res = -1;

   switch (cond) {
      case AST_CONTROL_BUSY:
      case AST_CONTROL_CONGESTION:
      case AST_CONTROL_RINGING:
         res = cond;
         break;
      case AST_CONTROL_INCOMPLETE:
         res = AST_CONTROL_CONGESTION;
         break;
      case -1:
#ifndef  NEW_ASTERISK
         o->cursound = -1;
         o->nosound = 0;      /* when cursound is -1 nosound must be 0 */
#endif
         return 0;

      case AST_CONTROL_VIDUPDATE:
         res = -1;
         break;
      case AST_CONTROL_HOLD:
         ast_verbose(" << Console Has Been Placed on Hold >> \n");
         ast_moh_start(c, data, o->mohinterpret);
         break;
      case AST_CONTROL_UNHOLD:
         ast_verbose(" << Console Has Been Retrieved from Hold >> \n");
         ast_moh_stop(c);
         break;
      case AST_CONTROL_PROCEEDING:
         ast_verbose(" << Call Proceeding... >> \n");
         ast_moh_stop(c);
         break;
      case AST_CONTROL_PROGRESS:
         ast_verbose(" << Call Progress... >> \n");
         ast_moh_stop(c);
         break;
      case AST_CONTROL_RADIO_KEY:
         o->txkeyed = 1;
         if(o->debuglevel)ast_verbose(" << AST_CONTROL_RADIO_KEY Radio Transmit On. >> \n");
         break;
      case AST_CONTROL_RADIO_UNKEY:
         o->txkeyed = 0;
         if(o->debuglevel)ast_verbose(" << AST_CONTROL_RADIO_UNKEY Radio Transmit Off. >> \n");
         break;
      default:
         ast_log(LOG_WARNING, "Don't know how to display condition %d on %s\n", cond, ast_channel_name(c));
         return -1;
   }

   if (res > -1)
      ring(o, res);

   return 0;
}

/*
 * allocate a new channel.
 */
static struct ast_channel *usbradio_new(struct chan_usbradio_pvt *o, char *ext, char *ctx, int state, const char *linkedid)
{
   struct ast_channel *c;

   c = ast_channel_alloc(1, state, o->cid_num, o->cid_name, "", ext, ctx, linkedid, 0, "Radio/%s", o->name);
   if (c == NULL)
      return NULL;
   c->tech = &usbradio_tech;
   if (o->sounddev < 0)
      setformat(o, O_RDWR);
   c->fds[0] = o->sounddev;   /* -1 if device closed, override later */
   ast_format_cap_add(c->nativeformats, &slin);
   ast_format_set(&c->readformat, AST_FORMAT_SLINEAR, 0);
   ast_format_set(&c->writeformat, AST_FORMAT_SLINEAR, 0);
   c->tech_pvt = o;

   if (!ast_strlen_zero(o->language))
      ast_channel_language_set(c, o->language);
   /* Don't use ast_set_callerid() here because it will
    * generate a needless NewCallerID event */
   if (!ast_strlen_zero(o->cid_num)) {
      c->caller.ani.number.valid = 1;
      c->caller.ani.number.str = ast_strdup(o->cid_num);
   }
   if (!ast_strlen_zero(ext)) {
      c->dialed.number.str = ast_strdup(ext);
   }

   o->owner = c;
   ast_module_ref(ast_module_info->self);
   ast_jb_configure(c, &global_jbconf);
   if (state != AST_STATE_DOWN) {
      if (ast_pbx_start(c)) {
         ast_log(LOG_WARNING, "Unable to start PBX on %s\n", ast_channel_name(c));
         ast_hangup(c);
         o->owner = c = NULL;
         /* XXX what about the channel itself ? */
         /* XXX what about usecnt ? */
      }
   }

   return c;
}
/*
*/
static struct ast_channel *usbradio_request(const char *type, struct ast_format_cap *cap, const struct ast_channel *requestor, const char *data, int *cause)
{
   struct ast_channel *c;
   struct chan_usbradio_pvt *o = find_desc(data);

   TRACEO(1,("usbradio_request()\n"));

   if (0)
   {
      ast_log(LOG_WARNING, "usbradio_request type <%s> data 0x%p <%s>\n", type, data, data);
   }
   if (o == NULL) {
      ast_log(LOG_NOTICE, "Device %s not found\n", data);
      /* XXX we could default to 'dsp' perhaps ? */
      return NULL;
   }
   if (!(ast_format_cap_iscompatible(cap, &slin))) {
      return NULL;
   }
   if (o->owner) {
      ast_log(LOG_NOTICE, "Already have a call (chan %p) on the usb channel\n", o->owner);
      *cause = AST_CAUSE_BUSY;
      return NULL;
   }
   c = usbradio_new(o, NULL, NULL, AST_STATE_DOWN, requestor ? ast_channel_linkedid(requestor) : NULL);
   if (c == NULL) {
      ast_log(LOG_WARNING, "Unable to create new usb channel\n");
      return NULL;
   }
      
   o->b.remoted=0;
   xpmr_config(o);

   return c;
}
/*
*/
static int console_key(int fd, int argc, char *argv[])
{
   struct chan_usbradio_pvt *o = find_desc(usbradio_active);

   if (argc != 2)
      return RESULT_SHOWUSAGE; 
   o->txtestkey = 1;
   return RESULT_SUCCESS;
}
/*
*/
static int console_unkey(int fd, int argc, char *argv[])
{
   struct chan_usbradio_pvt *o = find_desc(usbradio_active);

   if (argc != 2)
      return RESULT_SHOWUSAGE;
   o->txtestkey = 0;
   return RESULT_SUCCESS;
}

static int radio_tune(int fd, int argc, char *argv[])
{
   struct chan_usbradio_pvt *o = find_desc(usbradio_active);
   int i=0;

   if ((argc < 2) || (argc > 4))
      return RESULT_SHOWUSAGE; 

   if (argc == 2) /* just show stuff */
   {
      ast_cli(fd,"Active radio interface is [%s]\n",usbradio_active);
      ast_cli(fd,"Output A is currently set to ");
      if(o->txmixa==TX_OUT_COMPOSITE)ast_cli(fd,"composite.\n");
      else if (o->txmixa==TX_OUT_VOICE)ast_cli(fd,"voice.\n");
      else if (o->txmixa==TX_OUT_LSD)ast_cli(fd,"tone.\n");
      else if (o->txmixa==TX_OUT_AUX)ast_cli(fd,"auxvoice.\n");
      else ast_cli(fd,"off.\n");

      ast_cli(fd,"Output B is currently set to ");
      if(o->txmixb==TX_OUT_COMPOSITE)ast_cli(fd,"composite.\n");
      else if (o->txmixb==TX_OUT_VOICE)ast_cli(fd,"voice.\n");
      else if (o->txmixb==TX_OUT_LSD)ast_cli(fd,"tone.\n");
      else if (o->txmixb==TX_OUT_AUX)ast_cli(fd,"auxvoice.\n");
      else ast_cli(fd,"off.\n");

      ast_cli(fd,"Tx Voice Level currently set to %d\n",o->txmixaset);
      ast_cli(fd,"Tx Tone Level currently set to %d\n",o->txctcssadj);
      ast_cli(fd,"Rx Squelch currently set to %d\n",o->rxsquelchadj);
      ast_cli(fd,"Device String is %s\n",o->devstr);
      return RESULT_SHOWUSAGE;
   }

   o->pmrChan->b.tuning=1;

   if (!strcasecmp(argv[2],"rxnoise")) tune_rxinput(fd,o);
   else if (!strcasecmp(argv[2],"rxvoice")) tune_rxvoice(fd,o);
   else if (!strcasecmp(argv[2],"rxtone")) tune_rxctcss(fd,o);
   else if (!strcasecmp(argv[2],"rxsquelch"))
   {
      if (argc == 3)
      {
          ast_cli(fd,"Current Signal Strength is %d\n",((32767-o->pmrChan->rxRssi)*1000/32767));
          ast_cli(fd,"Current Squelch setting is %d\n",o->rxsquelchadj);
         //ast_cli(fd,"Current Raw RSSI        is %d\n",o->pmrChan->rxRssi);
          //ast_cli(fd,"Current (real) Squelch setting is %d\n",*(o->pmrChan->prxSquelchAdjust));
      } else {
         i = atoi(argv[3]);
         if ((i < 0) || (i > 999)) return RESULT_SHOWUSAGE;
         ast_cli(fd,"Changed Squelch setting to %d\n",i);
         o->rxsquelchadj = i;
         *(o->pmrChan->prxSquelchAdjust)= ((999 - i) * 32767) / 1000;
      }
   }
   else if (!strcasecmp(argv[2],"txvoice")) {
      i = 0;

      if( (o->txmixa!=TX_OUT_VOICE) && (o->txmixb!=TX_OUT_VOICE) &&
         (o->txmixa!=TX_OUT_COMPOSITE) && (o->txmixb!=TX_OUT_COMPOSITE)
        )
      {
         ast_log(LOG_ERROR,"No txvoice output configured.\n");
      }
      else if (argc == 3)
      {
         if((o->txmixa==TX_OUT_VOICE)||(o->txmixa==TX_OUT_COMPOSITE))
            ast_cli(fd,"Current txvoice setting on Channel A is %d\n",o->txmixaset);
         else
            ast_cli(fd,"Current txvoice setting on Channel B is %d\n",o->txmixbset);
      }
      else
      {
         i = atoi(argv[3]);
         if ((i < 0) || (i > 999)) return RESULT_SHOWUSAGE;

         if((o->txmixa==TX_OUT_VOICE)||(o->txmixa==TX_OUT_COMPOSITE))
         {
            o->txmixaset=i;
            ast_cli(fd,"Changed txvoice setting on Channel A to %d\n",o->txmixaset);
         }
         else
         {
            o->txmixbset=i;   
            ast_cli(fd,"Changed txvoice setting on Channel B to %d\n",o->txmixbset);
         }
         mixer_write(o);
         mult_set(o);
         ast_cli(fd,"Changed Tx Voice Output setting to %d\n",i);
      }
      o->pmrChan->b.txCtcssInhibit=1;
      tune_txoutput(o,i,fd);
      o->pmrChan->b.txCtcssInhibit=0;
   }
   else if (!strcasecmp(argv[2],"txall")) {
      i = 0;

      if( (o->txmixa!=TX_OUT_VOICE) && (o->txmixb!=TX_OUT_VOICE) &&
         (o->txmixa!=TX_OUT_COMPOSITE) && (o->txmixb!=TX_OUT_COMPOSITE)
        )
      {
         ast_log(LOG_ERROR,"No txvoice output configured.\n");
      }
      else if (argc == 3)
      {
         if((o->txmixa==TX_OUT_VOICE)||(o->txmixa==TX_OUT_COMPOSITE))
            ast_cli(fd,"Current txvoice setting on Channel A is %d\n",o->txmixaset);
         else
            ast_cli(fd,"Current txvoice setting on Channel B is %d\n",o->txmixbset);
      }
      else
      {
         i = atoi(argv[3]);
         if ((i < 0) || (i > 999)) return RESULT_SHOWUSAGE;

         if((o->txmixa==TX_OUT_VOICE)||(o->txmixa==TX_OUT_COMPOSITE))
         {
            o->txmixaset=i;
            ast_cli(fd,"Changed txvoice setting on Channel A to %d\n",o->txmixaset);
         }
         else
         {
            o->txmixbset=i;   
            ast_cli(fd,"Changed txvoice setting on Channel B to %d\n",o->txmixbset);
         }
         mixer_write(o);
         mult_set(o);
         ast_cli(fd,"Changed Tx Voice Output setting to %d\n",i);
      }
      tune_txoutput(o,i,fd);
   }
   else if (!strcasecmp(argv[2],"auxvoice")) {
      i = 0;
      if( (o->txmixa!=TX_OUT_AUX) && (o->txmixb!=TX_OUT_AUX))
      {
         ast_log(LOG_WARNING,"No auxvoice output configured.\n");
      }
      else if (argc == 3)
      {
         if(o->txmixa==TX_OUT_AUX)
            ast_cli(fd,"Current auxvoice setting on Channel A is %d\n",o->txmixaset);
         else
            ast_cli(fd,"Current auxvoice setting on Channel B is %d\n",o->txmixbset);
      }
      else
      {
         i = atoi(argv[3]);
         if ((i < 0) || (i > 999)) return RESULT_SHOWUSAGE;
         if(o->txmixa==TX_OUT_AUX)
         {
            o->txmixbset=i;
            ast_cli(fd,"Changed auxvoice setting on Channel A to %d\n",o->txmixaset);
         }
         else
         {
            o->txmixbset=i;
            ast_cli(fd,"Changed auxvoice setting on Channel B to %d\n",o->txmixbset);
         }
         mixer_write(o);
         mult_set(o);
      }
      //tune_auxoutput(o,i);
   }
   else if (!strcasecmp(argv[2],"txtone"))
   {
      if (argc == 3)
         ast_cli(fd,"Current Tx CTCSS modulation setting = %d\n",o->txctcssadj);
      else
      {
         i = atoi(argv[3]);
         if ((i < 0) || (i > 999)) return RESULT_SHOWUSAGE;
         o->txctcssadj = i;
         set_txctcss_level(o);
         ast_cli(fd,"Changed Tx CTCSS modulation setting to %i\n",i);
      }
      o->txtestkey=1;
      usleep(5000000);
      o->txtestkey=0;
   }
   else if (!strcasecmp(argv[2],"dump")) pmrdump(o);
   else if (!strcasecmp(argv[2],"nocap"))    
   {
      ast_cli(fd,"File capture (trace) was rx=%d tx=%d and now off.\n",o->b.rxcap2,o->b.txcap2);
      ast_cli(fd,"File capture (raw)   was rx=%d tx=%d and now off.\n",o->b.rxcapraw,o->b.txcapraw);
      o->b.rxcapraw=o->b.txcapraw=o->b.rxcap2=o->b.txcap2=o->pmrChan->b.rxCapture=o->pmrChan->b.txCapture=0;
      if (frxcapraw) { fclose(frxcapraw); frxcapraw = NULL; }
      if (frxcaptrace) { fclose(frxcaptrace); frxcaptrace = NULL; }
      if (frxoutraw) { fclose(frxoutraw); frxoutraw = NULL; }
      if (ftxcapraw) { fclose(ftxcapraw); ftxcapraw = NULL; }
      if (ftxcaptrace) { fclose(ftxcaptrace); ftxcaptrace = NULL; }
      if (ftxoutraw) { fclose(ftxoutraw); ftxoutraw = NULL; }
   }
   else if (!strcasecmp(argv[2],"rxtracecap")) 
   {
      if (!frxcaptrace) frxcaptrace= fopen(RX_CAP_TRACE_FILE,"w");
      ast_cli(fd,"Trace rx on.\n");
      o->b.rxcap2=o->pmrChan->b.rxCapture=1;
   }
   else if (!strcasecmp(argv[2],"txtracecap")) 
   {
      if (!ftxcaptrace) ftxcaptrace= fopen(TX_CAP_TRACE_FILE,"w");
      ast_cli(fd,"Trace tx on.\n");
      o->b.txcap2=o->pmrChan->b.txCapture=1;
   }
   else if (!strcasecmp(argv[2],"rxcap")) 
   {
      if (!frxcapraw) frxcapraw = fopen(RX_CAP_RAW_FILE,"w");
      ast_cli(fd,"cap rx raw on.\n");
      o->b.rxcapraw=1;
   }
   else if (!strcasecmp(argv[2],"txcap")) 
   {
      if (!ftxcapraw) ftxcapraw = fopen(TX_CAP_RAW_FILE,"w");
      ast_cli(fd,"cap tx raw on.\n");
      o->b.txcapraw=1;
   }
   else if (!strcasecmp(argv[2],"save"))
   {
      tune_write(o);
      ast_cli(fd,"Saved radio tuning settings to usbradio_tune_%s.conf\n",o->name);
   }
   else if (!strcasecmp(argv[2],"load"))
   {
      ast_mutex_lock(&o->eepromlock);
      while(o->eepromctl)
      {
         ast_mutex_unlock(&o->eepromlock);
         usleep(10000);
         ast_mutex_lock(&o->eepromlock);
      }
      o->eepromctl = 1;  /* request a load */
      ast_mutex_unlock(&o->eepromlock);

      ast_cli(fd,"Requesting loading of tuning settings from EEPROM for channel %s\n",o->name);
   }
   else
   {
      o->pmrChan->b.tuning=0;
      return RESULT_SHOWUSAGE;
   }
   o->pmrChan->b.tuning=0;
   return RESULT_SUCCESS;
}

/*
   set transmit ctcss modulation level
   adjust mixer output or internal gain depending on output type
   setting range is 0.0 to 0.9
*/
static int set_txctcss_level(struct chan_usbradio_pvt *o)
{                      
   if (o->txmixa == TX_OUT_LSD)
   {
//    o->txmixaset=(151*o->txctcssadj) / 1000;
      o->txmixaset=o->txctcssadj;
      mixer_write(o);
      mult_set(o);
   }
   else if (o->txmixb == TX_OUT_LSD)
   {
//    o->txmixbset=(151*o->txctcssadj) / 1000;
      o->txmixbset=o->txctcssadj;
      mixer_write(o);
      mult_set(o);
   }
   else
   {
      *o->pmrChan->ptxCtcssAdjust=(o->txctcssadj * M_Q8) / 1000;
   }
   return 0;
}
/*
   CLI debugging on and off
*/
static int radio_set_debug(int fd, int argc, char *argv[])
{
   struct chan_usbradio_pvt *o = find_desc(usbradio_active);

   o->debuglevel=1;
   ast_cli(fd,"usbradio debug on.\n");
   return RESULT_SUCCESS;
}

static int radio_set_debug_off(int fd, int argc, char *argv[])
{
   struct chan_usbradio_pvt *o = find_desc(usbradio_active);

   o->debuglevel=0;
   ast_cli(fd,"usbradio debug off.\n");
   return RESULT_SUCCESS;
}

static int radio_active(int fd, int argc, char *argv[])
{
        if (argc == 2)
                ast_cli(fd, "active (command) USB Radio device is [%s]\n", usbradio_active);
        else if (argc != 3)
                return RESULT_SHOWUSAGE;
        else {
                struct chan_usbradio_pvt *o;
                if (strcmp(argv[2], "show") == 0) {
                        for (o = usbradio_default.next; o; o = o->next)
                                ast_cli(fd, "device [%s] exists\n", o->name);
                        return RESULT_SUCCESS;
                }
                o = find_desc(argv[2]);
                if (o == NULL)
                        ast_cli(fd, "No device [%s] exists\n", argv[2]);
                else
            {
               struct chan_usbradio_pvt *ao;
               for (ao = usbradio_default.next; ao && ao->name ; ao = ao->next)ao->pmrChan->b.radioactive=0;
                    usbradio_active = o->name;
                o->pmrChan->b.radioactive=1;
            }
        }
        return RESULT_SUCCESS;
}
/*
   CLI debugging on and off
*/
static int radio_set_xpmr_debug(int fd, int argc, char *argv[])
{
   struct chan_usbradio_pvt *o = find_desc(usbradio_active);

   if (argc == 4)
   {
      int i;
      i = atoi(argv[3]);
      if ((i >= 0) && (i <= 100))
      { 
         o->pmrChan->tracelevel=i;
      }
    }
   // add ability to set it for a number of frames after which it reverts
   ast_cli(fd,"usbradio xdebug on tracelevel %i\n",o->pmrChan->tracelevel);

   return RESULT_SUCCESS;
}


static char key_usage[] =
   "Usage: radio key\n"
   "       Simulates COR active.\n";

static char unkey_usage[] =
   "Usage: radio unkey\n"
   "       Simulates COR un-active.\n";

static char active_usage[] =
        "Usage: radio active [device-name]\n"
        "       If used without a parameter, displays which device is the current\n"
        "one being commanded.  If a device is specified, the commanded radio device is changed\n"
        "to the device specified.\n";
/*
radio tune 6 3000    measured tx value
*/
static char radio_tune_usage[] =
   "Usage: radio tune <function>\n"
   "       rxnoise\n"
   "       rxvoice\n"
   "       rxtone\n"
   "       rxsquelch [newsetting]\n"
   "       txvoice [newsetting]\n"
   "       txtone [newsetting]\n"
   "       auxvoice [newsetting]\n"
   "       save (settings to tuning file)\n"
   "       load (tuning settings from EEPROM)\n"
   "\n       All [newsetting]'s are values 0-999\n\n";
                 
#ifndef  NEW_ASTERISK

static struct ast_cli_entry cli_usbradio[] = {
   { { "radio", "key", NULL },
   console_key, "Simulate Rx Signal Present",
   key_usage, NULL, NULL},

   { { "radio", "unkey", NULL },
   console_unkey, "Simulate Rx Signal Lusb",
   unkey_usage, NULL, NULL },

   { { "radio", "tune", NULL },
   radio_tune, "Radio Tune",
   radio_tune_usage, NULL, NULL },

   { { "radio", "set", "debug", NULL },
   radio_set_debug, "Radio Debug",
   radio_tune_usage, NULL, NULL },

   { { "radio", "set", "debug", "off", NULL },
   radio_set_debug_off, "Radio Debug",
   radio_tune_usage, NULL, NULL },

   { { "radio", "active", NULL },
   radio_active, "Change commanded device",
   active_usage, NULL, NULL },

    { { "radio", "set", "xdebug", NULL },
   radio_set_xpmr_debug, "Radio set xpmr debug level",
   active_usage, NULL, NULL },

};
#endif

/*
 * store the callerid components
 */
#if 0
static void store_callerid(struct chan_usbradio_pvt *o, char *s)
{
   ast_callerid_split(s, o->cid_name, sizeof(o->cid_name), o->cid_num, sizeof(o->cid_num));
}
#endif

static void store_rxdemod(struct chan_usbradio_pvt *o, const char *s)
{
   if (!strcasecmp(s,"no")){
      o->rxdemod = RX_AUDIO_NONE;
   }
   else if (!strcasecmp(s,"speaker")){
      o->rxdemod = RX_AUDIO_SPEAKER;
   }
   else if (!strcasecmp(s,"flat")){
         o->rxdemod = RX_AUDIO_FLAT;
   }  
   else {
      ast_log(LOG_WARNING,"Unrecognized rxdemod parameter: %s\n",s);
   }

   //ast_log(LOG_WARNING, "set rxdemod = %s\n", s);
}

                  
static void store_txmixa(struct chan_usbradio_pvt *o, const char *s)
{
   if (!strcasecmp(s,"no")){
      o->txmixa = TX_OUT_OFF;
   }
   else if (!strcasecmp(s,"voice")){
      o->txmixa = TX_OUT_VOICE;
   }
   else if (!strcasecmp(s,"tone")){
         o->txmixa = TX_OUT_LSD;
   }  
   else if (!strcasecmp(s,"composite")){
      o->txmixa = TX_OUT_COMPOSITE;
   }  
   else if (!strcasecmp(s,"auxvoice")){
      o->txmixa = TX_OUT_AUX;
   }  
   else {
      ast_log(LOG_WARNING,"Unrecognized txmixa parameter: %s\n",s);
   }

   //ast_log(LOG_WARNING, "set txmixa = %s\n", s);
}

static void store_txmixb(struct chan_usbradio_pvt *o, const char *s)
{
   if (!strcasecmp(s,"no")){
      o->txmixb = TX_OUT_OFF;
   }
   else if (!strcasecmp(s,"voice")){
      o->txmixb = TX_OUT_VOICE;
   }
   else if (!strcasecmp(s,"tone")){
         o->txmixb = TX_OUT_LSD;
   }  
   else if (!strcasecmp(s,"composite")){
      o->txmixb = TX_OUT_COMPOSITE;
   }  
   else if (!strcasecmp(s,"auxvoice")){
      o->txmixb = TX_OUT_AUX;
   }  
   else {
      ast_log(LOG_WARNING,"Unrecognized txmixb parameter: %s\n",s);
   }

   //ast_log(LOG_WARNING, "set txmixb = %s\n", s);
}
/*
*/
static void store_rxcdtype(struct chan_usbradio_pvt *o, const char *s)
{
   if (!strcasecmp(s,"no")){
      o->rxcdtype = CD_IGNORE;
   }
   else if (!strcasecmp(s,"usb")){
      o->rxcdtype = CD_HID;
   }
   else if (!strcasecmp(s,"dsp")){
      o->rxcdtype = CD_XPMR_NOISE;
   }  
   else if (!strcasecmp(s,"vox")){
      o->rxcdtype = CD_XPMR_VOX;
   }  
   else if (!strcasecmp(s,"usbinvert")){
      o->rxcdtype = CD_HID_INVERT;
   }  
   else {
      ast_log(LOG_WARNING,"Unrecognized rxcdtype parameter: %s\n",s);
   }

   //ast_log(LOG_WARNING, "set rxcdtype = %s\n", s);
}
/*
*/
static void store_rxsdtype(struct chan_usbradio_pvt *o, const char *s)
{
   if (!strcasecmp(s,"no") || !strcasecmp(s,"SD_IGNORE")){
      o->rxsdtype = SD_IGNORE;
   }
   else if (!strcasecmp(s,"usb") || !strcasecmp(s,"SD_HID")){
      o->rxsdtype = SD_HID;
   }
   else if (!strcasecmp(s,"usbinvert") || !strcasecmp(s,"SD_HID_INVERT")){
      o->rxsdtype = SD_HID_INVERT;
   }  
   else if (!strcasecmp(s,"software") || !strcasecmp(s,"SD_XPMR")){
      o->rxsdtype = SD_XPMR;
   }  
   else {
      ast_log(LOG_WARNING,"Unrecognized rxsdtype parameter: %s\n",s);
   }

   //ast_log(LOG_WARNING, "set rxsdtype = %s\n", s);
}
/*
*/
static void store_rxgain(struct chan_usbradio_pvt *o, const char *s)
{
   float f;
   sscanf(s, "%30f", &f); 
   o->rxgain = f;
   //ast_log(LOG_WARNING, "set rxgain = %f\n", f);
}
/*
*/
static void store_rxvoiceadj(struct chan_usbradio_pvt *o, const char *s)
{
   float f;
   sscanf(s, "%30f", &f);
   o->rxvoiceadj = f;
   //ast_log(LOG_WARNING, "set rxvoiceadj = %f\n", f);
}
/*
*/
static void store_rxctcssadj(struct chan_usbradio_pvt *o, const char *s)
{
   float f;
   sscanf(s, "%30f", &f);
   o->rxctcssadj = f;
   //ast_log(LOG_WARNING, "set rxctcssadj = %f\n", f);
}
/*
*/
static void store_txtoctype(struct chan_usbradio_pvt *o, const char *s)
{
   if (!strcasecmp(s,"no") || !strcasecmp(s,"TOC_NONE")){
      o->txtoctype = TOC_NONE;
   }
   else if (!strcasecmp(s,"phase") || !strcasecmp(s,"TOC_PHASE")){
      o->txtoctype = TOC_PHASE;
   }
   else if (!strcasecmp(s,"notone") || !strcasecmp(s,"TOC_NOTONE")){
      o->txtoctype = TOC_NOTONE;
   }  
   else {
      ast_log(LOG_WARNING,"Unrecognized txtoctype parameter: %s\n",s);
   }
}
/*
*/
static void tune_txoutput(struct chan_usbradio_pvt *o, int value, int fd)
{
   o->txtestkey=1;
   o->pmrChan->txPttIn=1;
   TxTestTone(o->pmrChan, 1);   // generate 1KHz tone at 7200 peak
   if (fd > 0) ast_cli(fd,"Tone output starting on channel %s...\n",o->name);
   usleep(5000000);
   TxTestTone(o->pmrChan, 0);
   if (fd > 0) ast_cli(fd,"Tone output ending on channel %s...\n",o->name);
   o->pmrChan->txPttIn=0;
   o->txtestkey=0;
}
/*
*/
static void tune_rxinput(int fd, struct chan_usbradio_pvt *o)
{
   const int target=23000;
   const int tolerance=2000;
   const int settingmin=1;
   const int settingstart=2;
   const int maxtries=12;

   float settingmax;
   
   int setting=0, tries=0, tmpdiscfactor, meas;
   int tunetype=0;

   settingmax = o->micmax;

   if(o->pmrChan->rxDemod)tunetype=1;
   o->pmrChan->b.tuning=1;

   setting = settingstart;

    ast_cli(fd,"tune rxnoise maxtries=%i, target=%i, tolerance=%i\n",maxtries,target,tolerance);

   while(tries<maxtries)
   {
      setamixer(o->devicenum,MIXER_PARAM_MIC_CAPTURE_VOL,setting,0);
      setamixer(o->devicenum,MIXER_PARAM_MIC_BOOST,o->rxboostset,0);
       
      usleep(100000);
      if(o->rxcdtype!=CD_XPMR_NOISE || o->rxdemod==RX_AUDIO_SPEAKER) 
      {
         // printf("Measure Direct Input\n");
         o->pmrChan->spsMeasure->source = o->pmrChan->spsRx->source;
         o->pmrChan->spsMeasure->discfactor=2000;
         o->pmrChan->spsMeasure->enabled=1;
         o->pmrChan->spsMeasure->amax = o->pmrChan->spsMeasure->amin = 0;
         usleep(400000);   
         meas=o->pmrChan->spsMeasure->apeak;
         o->pmrChan->spsMeasure->enabled=0;  
      }
      else
      {
         // printf("Measure HF Noise\n");
         tmpdiscfactor=o->pmrChan->spsRx->discfactor;
         o->pmrChan->spsRx->discfactor=(i16)2000;
         o->pmrChan->spsRx->discounteru=o->pmrChan->spsRx->discounterl=0;
         o->pmrChan->spsRx->amax=o->pmrChan->spsRx->amin=0;
         usleep(200000);
         meas=o->pmrChan->rxRssi;
         o->pmrChan->spsRx->discfactor=tmpdiscfactor;
         o->pmrChan->spsRx->discounteru=o->pmrChan->spsRx->discounterl=0;
         o->pmrChan->spsRx->amax=o->pmrChan->spsRx->amin=0;
      }
        if(!meas)meas++;
      ast_cli(fd,"tries=%i, setting=%i, meas=%i\n",tries,setting,meas);

      if( meas<(target-tolerance) || meas>(target+tolerance) || tries<3){
         setting=setting*target/meas;
      }
      else if(tries>4 && meas>(target-tolerance) && meas<(target+tolerance) )
      {
         break;
      }

      if(setting<settingmin)setting=settingmin;
      else if(setting>settingmax)setting=settingmax;

      tries++;
   }
   ast_cli(fd,"DONE tries=%i, setting=%i, meas=%i\n",tries,
      (setting * 1000) / o->micmax,meas);
   if( meas<(target-tolerance) || meas>(target+tolerance) ){
      ast_cli(fd,"ERROR: RX INPUT ADJUST FAILED.\n");
   }else{
      ast_cli(fd,"INFO: RX INPUT ADJUST SUCCESS.\n"); 
      o->rxmixerset=(setting * 1000) / o->micmax;
   }
   o->pmrChan->b.tuning=0;
}
/*
*/
static void tune_rxvoice(int fd, struct chan_usbradio_pvt *o)
{
   const int target=7200;           // peak
   const int tolerance=360;            // peak to peak
   const float settingmin=0.1;
   const float settingmax=4;
   const float settingstart=1;
   const int maxtries=12;

   float setting;

   int tries=0, meas;

   ast_cli(fd,"INFO: RX VOICE ADJUST START.\n");   
   ast_cli(fd,"target=%i tolerance=%i \n",target,tolerance);

   o->pmrChan->b.tuning=1;
   if(!o->pmrChan->spsMeasure)
      ast_cli(fd,"ERROR: NO MEASURE BLOCK.\n");

   if(!o->pmrChan->spsMeasure->source || !o->pmrChan->prxVoiceAdjust )
      ast_cli(fd,"ERROR: NO SOURCE OR MEASURE SETTING.\n");

   o->pmrChan->spsMeasure->source=o->pmrChan->spsRxOut->sink;
   o->pmrChan->spsMeasure->enabled=1;
   o->pmrChan->spsMeasure->discfactor=1000;
   
   setting=settingstart;

   // ast_cli(fd,"ERROR: NO MEASURE BLOCK.\n");

   while(tries<maxtries)
   {
      *(o->pmrChan->prxVoiceAdjust)=setting*M_Q8;
      usleep(10000);
      o->pmrChan->spsMeasure->amax = o->pmrChan->spsMeasure->amin = 0;
      usleep(1000000);
      meas = o->pmrChan->spsMeasure->apeak;
      ast_cli(fd,"tries=%i, setting=%f, meas=%i\n",tries,setting,meas);

      if( meas<(target-tolerance) || meas>(target+tolerance) || tries<3){
         setting=setting*target/meas;
      }
      else if(tries>4 && meas>(target-tolerance) && meas<(target+tolerance) )
      {
         break;
      }
      if(setting<settingmin)setting=settingmin;
      else if(setting>settingmax)setting=settingmax;

      tries++;
   }

   o->pmrChan->spsMeasure->enabled=0;

   ast_cli(fd,"DONE tries=%i, setting=%f, meas=%f\n",tries,setting,(float)meas);
   if( meas<(target-tolerance) || meas>(target+tolerance) ){
      ast_cli(fd,"ERROR: RX VOICE GAIN ADJUST FAILED.\n");
   }else{
      ast_cli(fd,"INFO: RX VOICE GAIN ADJUST SUCCESS.\n");
      o->rxvoiceadj=setting;
   }
   o->pmrChan->b.tuning=0;
}
/*
*/
static void tune_rxctcss(int fd, struct chan_usbradio_pvt *o)
{
   const int target=2400;      // was 4096 pre 20080205
   const int tolerance=100;
   const float settingmin=0.1;
   const float settingmax=8;
   const float settingstart=1;
   const int maxtries=12;

   float setting;
   int tries=0, meas;

   ast_cli(fd,"INFO: RX CTCSS ADJUST START.\n");   
   ast_cli(fd,"target=%i tolerance=%i \n",target,tolerance);

   o->pmrChan->b.tuning=1;
   o->pmrChan->spsMeasure->source=o->pmrChan->prxCtcssMeasure;
   o->pmrChan->spsMeasure->discfactor=400;
   o->pmrChan->spsMeasure->enabled=1;

   setting=settingstart;

   while(tries<maxtries)
   {
      *(o->pmrChan->prxCtcssAdjust)=setting*M_Q8;
      usleep(10000);
      o->pmrChan->spsMeasure->amax = o->pmrChan->spsMeasure->amin = 0;
      usleep(500000);
      meas = o->pmrChan->spsMeasure->apeak;
      ast_cli(fd,"tries=%i, setting=%f, meas=%i\n",tries,setting,meas);

      if( meas<(target-tolerance) || meas>(target+tolerance) || tries<3){
         setting=setting*target/meas;
      }
      else if(tries>4 && meas>(target-tolerance) && meas<(target+tolerance) )
      {
         break;
      }
      if(setting<settingmin)setting=settingmin;
      else if(setting>settingmax)setting=settingmax;

      tries++;
   }
   o->pmrChan->spsMeasure->enabled=0;
   ast_cli(fd,"DONE tries=%i, setting=%f, meas=%f\n",tries,setting,(float)meas);
   if( meas<(target-tolerance) || meas>(target+tolerance) ){
      ast_cli(fd,"ERROR: RX CTCSS GAIN ADJUST FAILED.\n");
   }else{
      ast_cli(fd,"INFO: RX CTCSS GAIN ADJUST SUCCESS.\n");
      o->rxctcssadj=setting;
   }
   o->pmrChan->b.tuning=0;
}
/*
   after radio tune is performed data is serialized here 
*/
static void tune_write(struct chan_usbradio_pvt *o)
{
   FILE *fp;
   char fname[200];

   snprintf(fname,sizeof(fname) - 1,"/etc/asterisk/usbradio_tune_%s.conf",o->name);
   fp = fopen(fname,"w");

   fprintf(fp,"[%s]\n",o->name);

   fprintf(fp,"; name=%s\n",o->name);
   fprintf(fp,"; devicenum=%i\n",o->devicenum);
   fprintf(fp,"devstr=%s\n",o->devstr);
   fprintf(fp,"rxmixerset=%i\n",o->rxmixerset);
   fprintf(fp,"txmixaset=%i\n",o->txmixaset);
   fprintf(fp,"txmixbset=%i\n",o->txmixbset);
   fprintf(fp,"rxvoiceadj=%f\n",o->rxvoiceadj);
   fprintf(fp,"rxctcssadj=%f\n",o->rxctcssadj);
   fprintf(fp,"txctcssadj=%i\n",o->txctcssadj);
   fprintf(fp,"rxsquelchadj=%i\n",o->rxsquelchadj);
   fclose(fp);

   if(o->wanteeprom)
   {
      ast_mutex_lock(&o->eepromlock);
      while(o->eepromctl)
      {
         ast_mutex_unlock(&o->eepromlock);
         usleep(10000);
         ast_mutex_lock(&o->eepromlock);
      }
      o->eeprom[EEPROM_RXMIXERSET] = o->rxmixerset;
      o->eeprom[EEPROM_TXMIXASET] = o->txmixaset;
      o->eeprom[EEPROM_TXMIXBSET] = o->txmixbset;
      memcpy(&o->eeprom[EEPROM_RXVOICEADJ],&o->rxvoiceadj,sizeof(float));
      memcpy(&o->eeprom[EEPROM_RXCTCSSADJ],&o->rxctcssadj,sizeof(float));
      o->eeprom[EEPROM_TXCTCSSADJ] = o->txctcssadj;
      o->eeprom[EEPROM_RXSQUELCHADJ] = o->rxsquelchadj;
      o->eepromctl = 2;  /* request a write */
      ast_mutex_unlock(&o->eepromlock);
   }
}
//
static void mixer_write(struct chan_usbradio_pvt *o)
{
   setamixer(o->devicenum,MIXER_PARAM_MIC_PLAYBACK_SW,0,0);
   setamixer(o->devicenum,MIXER_PARAM_MIC_PLAYBACK_VOL,0,0);
   setamixer(o->devicenum,MIXER_PARAM_SPKR_PLAYBACK_SW,1,0);
   setamixer(o->devicenum,MIXER_PARAM_SPKR_PLAYBACK_VOL,
      o->txmixaset * o->spkrmax / 1000,
      o->txmixbset * o->spkrmax / 1000);
   setamixer(o->devicenum,MIXER_PARAM_MIC_CAPTURE_VOL,
      o->rxmixerset * o->micmax / 1000,0);
   setamixer(o->devicenum,MIXER_PARAM_MIC_BOOST,o->rxboostset,0);
   setamixer(o->devicenum,MIXER_PARAM_MIC_CAPTURE_SW,1,0);
}
/*
   adjust dsp multiplier to add resolution to tx level adjustment
*/
static void mult_set(struct chan_usbradio_pvt *o)
{

   if(o->pmrChan->spsTxOutA) {
      o->pmrChan->spsTxOutA->outputGain = 
         mult_calc((o->txmixaset * 152) / 1000);
   }
   if(o->pmrChan->spsTxOutB){
      o->pmrChan->spsTxOutB->outputGain = 
         mult_calc((o->txmixbset * 152) / 1000);
   }
}
//
// input 0 - 151 outputs are pot and multiplier
//
static int mult_calc(int value)
{
   const int multx=M_Q8;
   int pot,mult;

   pot=((int)(value/4)*4)+2;
   mult = multx-( ( multx * (3-(value%4)) ) / (pot+2) );
   return(mult);
}

#define pd(x) {printf(#x" = %d\n",x);}
#define pp(x) {printf(#x" = %p\n",x);}
#define ps(x) {printf(#x" = %s\n",x);}
#define pf(x) {printf(#x" = %f\n",x);}


#if 0
/*
   do hid output if only requirement is ptt out
   this give fastest performance with least overhead
   where gpio inputs are not required.
*/

static int usbhider(struct chan_usbradio_pvt *o, int opt)
{
   unsigned char buf[4];
   char lastrx, txtmp;

   if(opt)
   {
      struct usb_device *usb_dev;

      usb_dev = hid_device_init(o->devstr);
      if (usb_dev == NULL) {
         ast_log(LOG_ERROR,"USB HID device not found\n");
         return -1;
      }
      o->usb_handle = usb_open(usb_dev);
      if (o->usb_handle == NULL) {
          ast_log(LOG_ERROR,"Not able to open USB device\n");
         return -1;
      }
      if (usb_claim_interface(o->usb_handle,C108_HID_INTERFACE) < 0)
      {
          if (usb_detach_kernel_driver_np(o->usb_handle,C108_HID_INTERFACE) < 0) {
             ast_log(LOG_ERROR,"Not able to detach the USB device\n");
            return -1;
         }
         if (usb_claim_interface(o->usb_handle,C108_HID_INTERFACE) < 0) {
            ast_log(LOG_ERROR,"Not able to claim the USB device\n");
            return -1;
         }
      }
   
      memset(buf,0,sizeof(buf));
      buf[2] = o->hid_gpio_ctl;
      buf[1] = 0;
      hid_set_outputs(o->usb_handle,buf);
      memcpy(bufsave,buf,sizeof(buf));
    
      buf[o->hid_gpio_ctl_loc] = o->hid_gpio_ctl;
      o->lasttx=0;
   }

   /* if change in tx state as controlled by xpmr */
   txtmp=o->pmrChan->txPttOut;
         
   if (o->lasttx != txtmp)
   {
      o->pmrChan->txPttHid=o->lasttx = txtmp;
      if(o->debuglevel)printf("usbhid: tx set to %d\n",txtmp);
      buf[o->hid_gpio_loc] = 0;
      if (!o->invertptt)
      {
         if (txtmp) buf[o->hid_gpio_loc] = o->hid_io_ptt;
      }
      else
      {
         if (!txtmp) buf[o->hid_gpio_loc] = o->hid_io_ptt;
      }
      buf[o->hid_gpio_ctl_loc] = o->hid_gpio_ctl;
      hid_set_outputs(o->usb_handle,buf);
   }

   return(0);
}
#endif
/*
*/
static void pmrdump(struct chan_usbradio_pvt *o)
{
   t_pmr_chan *p;
   int i;

   p=o->pmrChan;

   printf("\nodump()\n");

   pd(o->devicenum);
   ps(o->devstr);

   pd(o->micmax);
   pd(o->spkrmax);

   pd(o->rxdemod);
   pd(o->rxcdtype);
   pd(o->rxsdtype);
   pd(o->txtoctype);

   pd(o->rxmixerset);
   pd(o->rxboostset);

   pf(o->rxvoiceadj);
   pf(o->rxctcssadj);
   pd(o->rxsquelchadj);

   ps(o->txctcssdefault);
   ps(o->txctcssfreq);

   pd(o->numrxctcssfreqs);
   if(o->numrxctcssfreqs>0)
   {
      for(i=0;i<o->numrxctcssfreqs;i++)
      {
         printf(" %i =  %s  %s\n",i,o->rxctcss[i],o->txctcss[i]); 
      }
   }

   pd(o->b.rxpolarity);
   pd(o->b.txpolarity);

   pd(o->txprelim);
   pd(o->txmixa);
   pd(o->txmixb);
   
   pd(o->txmixaset);
   pd(o->txmixbset);
   
   printf("\npmrdump()\n");
 
   pd(p->devicenum);

   printf("prxSquelchAdjust=%i\n",*(o->pmrChan->prxSquelchAdjust));

   pd(p->rxCarrierPoint);
   pd(p->rxCarrierHyst);

   pd(*p->prxVoiceAdjust);
   pd(*p->prxCtcssAdjust);

   pd(p->rxfreq);
   pd(p->txfreq);

   pd(p->rxCtcss->relax);
   //pf(p->rxCtcssFreq);   
   pd(p->numrxcodes);
   if(o->pmrChan->numrxcodes>0)
   {
      for(i=0;i<o->pmrChan->numrxcodes;i++)
      {
         printf(" %i = %s\n",i,o->pmrChan->pRxCode[i]); 
      }
   }

   pd(p->txTocType);
   ps(p->pTxCodeDefault);
   pd(p->txcodedefaultsmode);
   pd(p->numtxcodes);
   if(o->pmrChan->numtxcodes>0)
   {
      for(i=0;i<o->pmrChan->numtxcodes;i++)
      {                                       
         printf(" %i = %s\n",i,o->pmrChan->pTxCode[i]); 
      }
   }

   pd(p->b.rxpolarity);
   pd(p->b.txpolarity);
   pd(p->b.dcsrxpolarity);
   pd(p->b.dcstxpolarity);
   pd(p->b.lsdrxpolarity);
   pd(p->b.lsdtxpolarity);

   pd(p->txMixA);
   pd(p->txMixB);
    
   pd(p->rxDeEmpEnable);
   pd(p->rxCenterSlicerEnable);
   pd(p->rxCtcssDecodeEnable);
   pd(p->rxDcsDecodeEnable);
   pd(p->b.ctcssRxEnable);
   pd(p->b.dcsRxEnable);
   pd(p->b.lmrRxEnable);
   pd(p->b.dstRxEnable);
   pd(p->smode);

   pd(p->txHpfEnable);
   pd(p->txLimiterEnable);
   pd(p->txPreEmpEnable);
   pd(p->txLpfEnable);

   if(p->spsTxOutA)pd(p->spsTxOutA->outputGain);
   if(p->spsTxOutB)pd(p->spsTxOutB->outputGain);
   pd(p->txPttIn);
   pd(p->txPttOut);

   pd(p->tracetype);

   return;
}
/*
   takes data from a chan_usbradio_pvt struct (e.g. o->)
   and configures the xpmr radio layer
*/
static int xpmr_config(struct chan_usbradio_pvt *o)
{
   //ast_log(LOG_NOTICE,"xpmr_config()\n");

   TRACEO(1,("xpmr_config()\n"));

   if(o->pmrChan==NULL)
   {
      ast_log(LOG_ERROR,"pmr channel structure NULL\n");
      return 1;
   }

   o->pmrChan->rxCtcss->relax = o->rxctcssrelax;
   o->pmrChan->txpower=0;

   if(o->b.remoted)
   {
      o->pmrChan->pTxCodeDefault = o->set_txctcssdefault;
      o->pmrChan->pRxCodeSrc=o->set_rxctcssfreqs;
      o->pmrChan->pTxCodeSrc=o->set_txctcssfreqs;

      o->pmrChan->rxfreq=o->set_rxfreq;
      o->pmrChan->txfreq=o->set_txfreq;
      /* printf(" remoted %s %s --> %s \n",o->pmrChan->txctcssdefault,
         o->pmrChan->txctcssfreq,o->pmrChan->rxctcssfreq); */
   }
   else
   {
      // set xpmr pointers to source strings

      o->pmrChan->pTxCodeDefault = o->txctcssdefault;
      o->pmrChan->pRxCodeSrc     = o->rxctcssfreqs;
      o->pmrChan->pTxCodeSrc     = o->txctcssfreqs;
   
      o->pmrChan->rxfreq = o->rxfreq;
      o->pmrChan->txfreq = o->txfreq;
   }
   
   code_string_parse(o->pmrChan);
   if(o->pmrChan->rxfreq) o->pmrChan->b.reprog=1;

   return 0;
}
/*
 * grab fields from the config file, init the descriptor and open the device.
 */
static struct chan_usbradio_pvt *store_config(struct ast_config *cfg, char *ctg)
{
   struct ast_variable *v;
   struct chan_usbradio_pvt *o;
   struct ast_config *cfg1;
   int i;
   char fname[200];
#ifdef   NEW_ASTERISK
   struct ast_flags zeroflag = {0};
#endif
   if (ctg == NULL) {
      traceusb1((" store_config() ctg == NULL\n"));
      o = &usbradio_default;
      ctg = "general";
   } else {
      /* "general" is also the default thing */
      if (strcmp(ctg, "general") == 0) {
         o = &usbradio_default;
      } else {
          // ast_log(LOG_NOTICE,"ast_calloc for chan_usbradio_pvt of %s\n",ctg);
         if (!(o = ast_calloc(1, sizeof(*o))))
            return NULL;
         *o = usbradio_default;
         o->name = ast_strdup(ctg);
         if (!usbradio_active) 
            usbradio_active = o->name;
      }
   }
   ast_mutex_init(&o->eepromlock);
   strcpy(o->mohinterpret, "default");
   /* fill other fields from configuration */
   for (v = ast_variable_browse(cfg, ctg); v; v = v->next) {
      M_START((char *)v->name, (char *)v->value);

      /* handle jb conf */
      if (!ast_jb_read_conf(&global_jbconf, v->name, v->value))
         continue;

#if   0
         M_BOOL("autoanswer", o->autoanswer)
         M_BOOL("autohangup", o->autohangup)
         M_BOOL("overridecontext", o->overridecontext)
         M_STR("context", o->ctx)
         M_STR("language", o->language)
         M_STR("mohinterpret", o->mohinterpret)
         M_STR("extension", o->ext)
         M_F("callerid", store_callerid(o, v->value))
#endif
         M_UINT("frags", o->frags)
         M_UINT("queuesize",o->queuesize)
#if 0
         M_UINT("devicenum",o->devicenum)
#endif
         M_UINT("debug", usbradio_debug)
         M_BOOL("rxcpusaver",o->rxcpusaver)
         M_BOOL("txcpusaver",o->txcpusaver)
         M_BOOL("invertptt",o->invertptt)
         M_F("rxdemod",store_rxdemod(o,(char *)v->value))
         M_BOOL("txprelim",o->txprelim);
         M_F("txmixa",store_txmixa(o,(char *)v->value))
         M_F("txmixb",store_txmixb(o,(char *)v->value))
         M_F("carrierfrom",store_rxcdtype(o,(char *)v->value))
         M_F("rxsdtype",store_rxsdtype(o,(char *)v->value))
          M_UINT("rxsqvox",o->rxsqvoxadj)
         M_STR("txctcssdefault",o->txctcssdefault)
         M_STR("rxctcssfreqs",o->rxctcssfreqs)
         M_STR("txctcssfreqs",o->txctcssfreqs)
         M_UINT("rxfreq",o->rxfreq)
         M_UINT("txfreq",o->txfreq)
         M_F("rxgain",store_rxgain(o,(char *)v->value))
         M_BOOL("rxboost",o->rxboostset)
         M_UINT("rxctcssrelax",o->rxctcssrelax)
         M_F("txtoctype",store_txtoctype(o,(char *)v->value))
         M_UINT("hdwtype",o->hdwtype)
         M_UINT("eeprom",o->wanteeprom)
         M_UINT("duplex",o->radioduplex)
         M_UINT("txsettletime",o->txsettletime)
         M_BOOL("rxpolarity",o->b.rxpolarity)
         M_BOOL("txpolarity",o->b.txpolarity)
         M_BOOL("dcsrxpolarity",o->b.dcsrxpolarity)
         M_BOOL("dcstxpolarity",o->b.dcstxpolarity)
         M_BOOL("lsdrxpolarity",o->b.lsdrxpolarity)
         M_BOOL("lsdtxpolarity",o->b.lsdtxpolarity)
         M_BOOL("loopback",o->b.loopback)
         M_BOOL("radioactive",o->b.radioactive)
         M_UINT("rptnum",o->rptnum)
         M_UINT("idleinterval",o->idleinterval)
         M_UINT("turnoffs",o->turnoffs)
         M_UINT("tracetype",o->tracetype)
         M_UINT("tracelevel",o->tracelevel)
         M_UINT("area",o->area)
         M_STR("ukey",o->ukey)
         M_END(;
         );
   }

   o->debuglevel=0;

   if (o == &usbradio_default)      /* we are done with the default */
      return NULL;

   snprintf(fname,sizeof(fname) - 1,config1,o->name);
#ifdef   NEW_ASTERISK
   cfg1 = ast_config_load(fname,zeroflag);
#else
   cfg1 = ast_config_load(fname);
#endif
   o->rxmixerset = 500;
   o->txmixaset = 500;
   o->txmixbset = 500;
   o->rxvoiceadj = 0.5;
   o->rxctcssadj = 0.5;
   o->txctcssadj = 200;
   o->rxsquelchadj = 500;
   o->devstr[0] = 0;
   if (cfg1 && cfg1 != CONFIG_STATUS_FILEINVALID) {
      for (v = ast_variable_browse(cfg1, o->name); v; v = v->next) {
   
         M_START((char *)v->name, (char *)v->value);
         M_UINT("rxmixerset", o->rxmixerset)
         M_UINT("txmixaset", o->txmixaset)
         M_UINT("txmixbset", o->txmixbset)
         M_F("rxvoiceadj",store_rxvoiceadj(o,(char *)v->value))
         M_F("rxctcssadj",store_rxctcssadj(o,(char *)v->value))
         M_UINT("txctcssadj",o->txctcssadj);
         M_UINT("rxsquelchadj", o->rxsquelchadj)
         M_STR("devstr", o->devstr)
         M_END(;
         );
      }
      ast_config_destroy(cfg1);
   } else ast_log(LOG_WARNING,"File %s not found, using default parameters.\n",fname);

   if(o->wanteeprom)
   {
      ast_mutex_lock(&o->eepromlock);
      while(o->eepromctl)
      {
         ast_mutex_unlock(&o->eepromlock);
         usleep(10000);
         ast_mutex_lock(&o->eepromlock);
      }
      o->eepromctl = 1;  /* request a load */
      ast_mutex_unlock(&o->eepromlock);
   }
   /* if our specified one exists in the list */
   if ((!usb_list_check(o->devstr)) || find_desc_usb(o->devstr))
   {
      char *s;

      for(s = usb_device_list; *s; s += strlen(s) + 1)
      {
         if (!find_desc_usb(s)) break;
      }
      if (!*s)
      {
         ast_log(LOG_WARNING,"Unable to assign USB device for channel %s\n",o->name);
         goto error;
      }
      ast_log(LOG_NOTICE,"Assigned USB device %s to usbradio channel %s\n",s,o->name);
      strcpy(o->devstr,s);
   }

   i = usb_get_usbdev(o->devstr);
   if (i < 0)
   {
           ast_log(LOG_ERROR,"Not able to find alsa USB device\n");
      goto error;
   }
   o->devicenum = i;

   o->micmax = amixer_max(o->devicenum,MIXER_PARAM_MIC_CAPTURE_VOL);
   o->spkrmax = amixer_max(o->devicenum,MIXER_PARAM_SPKR_PLAYBACK_VOL);
   o->lastopen = ast_tvnow(); /* don't leave it 0 or tvdiff may wrap */
   o->dsp = ast_dsp_new();
   if (o->dsp)
   {
#ifdef   NEW_ASTERISK
     ast_dsp_set_features(o->dsp,DSP_FEATURE_DIGIT_DETECT);
     ast_dsp_set_digitmode(o->dsp,DSP_DIGITMODE_DTMF | DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_RELAXDTMF);
#else
     ast_dsp_set_features(o->dsp,DSP_FEATURE_DTMF_DETECT);
     ast_dsp_digitmode(o->dsp,DSP_DIGITMODE_DTMF | DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_RELAXDTMF);
#endif
   }

   if(o->pmrChan==NULL)
   {
      t_pmr_chan tChan;

      // ast_log(LOG_NOTICE,"createPmrChannel() %s\n",o->name);
      memset(&tChan,0,sizeof(t_pmr_chan));

      tChan.pTxCodeDefault = o->txctcssdefault;
      tChan.pRxCodeSrc     = o->rxctcssfreqs;
      tChan.pTxCodeSrc     = o->txctcssfreqs;

      tChan.rxDemod=o->rxdemod;
      tChan.rxCdType=o->rxcdtype;
      tChan.rxSqVoxAdj=o->rxsqvoxadj;

      if (o->txprelim) 
         tChan.txMod = 2;

      tChan.txMixA = o->txmixa;
      tChan.txMixB = o->txmixb;

      tChan.rxCpuSaver=o->rxcpusaver;
      tChan.txCpuSaver=o->txcpusaver;

      tChan.b.rxpolarity=o->b.rxpolarity;
      tChan.b.txpolarity=o->b.txpolarity;

      tChan.b.dcsrxpolarity=o->b.dcsrxpolarity;
      tChan.b.dcstxpolarity=o->b.dcstxpolarity;

      tChan.b.lsdrxpolarity=o->b.lsdrxpolarity;
      tChan.b.lsdtxpolarity=o->b.lsdtxpolarity;

      tChan.tracetype=o->tracetype;
      tChan.tracelevel=o->tracelevel;
      tChan.rptnum=o->rptnum;
      tChan.idleinterval=o->idleinterval;
      tChan.turnoffs=o->turnoffs;
      tChan.area=o->area;
      tChan.ukey=o->ukey;
      tChan.name=o->name;

      o->pmrChan=createPmrChannel(&tChan,FRAME_SIZE);
                            
      o->pmrChan->radioDuplex=o->radioduplex;
      o->pmrChan->b.loopback=0; 
      o->pmrChan->txsettletime=o->txsettletime;
      o->pmrChan->rxCpuSaver=o->rxcpusaver;
      o->pmrChan->txCpuSaver=o->txcpusaver;

      *(o->pmrChan->prxSquelchAdjust) = 
         ((999 - o->rxsquelchadj) * 32767) / 1000;

      *(o->pmrChan->prxVoiceAdjust)=o->rxvoiceadj*M_Q8;
      *(o->pmrChan->prxCtcssAdjust)=o->rxctcssadj*M_Q8;
      o->pmrChan->rxCtcss->relax=o->rxctcssrelax;
      o->pmrChan->txTocType = o->txtoctype;

        if (    (o->txmixa == TX_OUT_LSD) ||
                (o->txmixa == TX_OUT_COMPOSITE) ||
                (o->txmixb == TX_OUT_LSD) ||
                (o->txmixb == TX_OUT_COMPOSITE))
        {
                set_txctcss_level(o);
        }

      if( (o->txmixa!=TX_OUT_VOICE) && (o->txmixb!=TX_OUT_VOICE) &&
         (o->txmixa!=TX_OUT_COMPOSITE) && (o->txmixb!=TX_OUT_COMPOSITE)
        )
      {
         ast_log(LOG_ERROR,"No txvoice output configured.\n");
      }
   
      if( o->txctcssfreq[0] && 
          o->txmixa!=TX_OUT_LSD && o->txmixa!=TX_OUT_COMPOSITE  &&
         o->txmixb!=TX_OUT_LSD && o->txmixb!=TX_OUT_COMPOSITE
        )
      {
         ast_log(LOG_ERROR,"No txtone output configured.\n");
      }
      
      if(o->b.radioactive)
      {
          // 20080328 sphenke asdf maw !!!
          // this diagnostic option was working but now appears broken
         // it's not required for operation so I'll fix it later.
         //struct chan_usbradio_pvt *ao;
         //for (ao = usbradio_default.next; ao && ao->name ; ao = ao->next)ao->pmrChan->b.radioactive=0;
         usbradio_active = o->name;
         // o->pmrChan->b.radioactive=1;
         //o->b.radioactive=0;
         //o->pmrChan->b.radioactive=0;
         ast_log(LOG_NOTICE,"radio active set to [%s]\n",o->name);
      }
   }

   xpmr_config(o);

   TRACEO(1,("store_config() 120\n"));
   mixer_write(o);
   TRACEO(1,("store_config() 130\n"));
   mult_set(o);    
   TRACEO(1,("store_config() 140\n"));
   hidhdwconfig(o);

   TRACEO(1,("store_config() 200\n"));

#ifndef  NEW_ASTERISK
   if (pipe(o->sndcmd) != 0) {
      ast_log(LOG_ERROR, "Unable to create pipe\n");
      goto error;
   }

   ast_pthread_create_background(&o->sthread, NULL, sound_thread, o);
#endif

   /* link into list of devices */
   if (o != &usbradio_default) {
      o->next = usbradio_default.next;
      usbradio_default.next = o;
   }
   TRACEO(1,("store_config() complete\n"));
   return o;
  
  error:
   if (o != &usbradio_default)
      free(o);
   return NULL;
}


#if   DEBUG_FILETEST == 1
/*
   Test It on a File
*/
int RxTestIt(struct chan_usbradio_pvt *o)
{
   const int numSamples = SAMPLES_PER_BLOCK;
   const int numChannels = 16;

   i16 sample,i,ii;
   
   i32 txHangTime;

   i16 txEnable;

   t_pmr_chan  tChan;
   t_pmr_chan *pChan;

   FILE *hInput=NULL, *hOutput=NULL, *hOutputTx=NULL;
 
   i16 iBuff[numSamples*2*6], oBuff[numSamples];
              
   printf("RxTestIt()\n");

   pChan=o->pmrChan;
   pChan->b.txCapture=1;
   pChan->b.rxCapture=1;

   txEnable = 0;

   hInput  = fopen("/usr/src/xpmr/testdata/rx_in.pcm","r");
   if(!hInput){
      printf(" RxTestIt() File Not Found.\n");
      return 0;
   }
   hOutput = fopen("/usr/src/xpmr/testdata/rx_debug.pcm","w");

   printf(" RxTestIt() Working...\n");
            
   while(!feof(hInput))
   {
      fread((void *)iBuff,2,numSamples*2*6,hInput);
       
      if(txHangTime)txHangTime-=numSamples;
      if(txHangTime<0)txHangTime=0;
      
      if(pChan->rxCtcss->decode)txHangTime=(8000/1000*2000);

      if(pChan->rxCtcss->decode && !txEnable)
      {
         txEnable=1;
         //pChan->inputBlanking=(8000/1000*200);
      }
      else if(!pChan->rxCtcss->decode && txEnable)
      {
         txEnable=0; 
      }

      PmrRx(pChan,iBuff,oBuff);

      if (fwrite((void *)pChan->prxDebug,2,numSamples*numChannels,hOutput) != numSamples * numChannels) {
         ast_log(LOG_ERROR, "fwrite() failed: %s\n", strerror(errno));
      }
   }
   pChan->b.txCapture=0;
   pChan->b.rxCapture=0;

   if(hInput)fclose(hInput);
   if(hOutput)fclose(hOutput);

   printf(" RxTestIt() Complete.\n");

   return 0;
}
#endif

#ifdef   NEW_ASTERISK

static char *res2cli(int r)

{
   switch (r)
   {
       case RESULT_SUCCESS:
      return(CLI_SUCCESS);
       case RESULT_SHOWUSAGE:
      return(CLI_SHOWUSAGE);
       default:
      return(CLI_FAILURE);
   }
}

static char *handle_console_key(struct ast_cli_entry *e,
   int cmd, struct ast_cli_args *a)
{
   char *argv[] = { "radio", "key", NULL };

        switch (cmd) {
        case CLI_INIT:
                e->command = "radio key";
                e->usage = key_usage;
                return NULL;
        case CLI_GENERATE:
                return NULL;
   }
   return res2cli(console_key(a->fd, 2, argv));
}

static char *handle_console_unkey(struct ast_cli_entry *e,
   int cmd, struct ast_cli_args *a)
{
   char *argv[] = { "radio", "unkey", NULL };
        switch (cmd) {
        case CLI_INIT:
                e->command = "radio unkey";
                e->usage = unkey_usage;
                return NULL;
        case CLI_GENERATE:
                return NULL;
   }
   return res2cli(console_unkey(a->fd, 2, argv));
}

static char *handle_radio_tune(struct ast_cli_entry *e,
   int cmd, struct ast_cli_args *a)
{
   char *argv[5] = { "radio", "tune", a->argc > 2 ? (char *) a->argv[2] : NULL, a->argc > 3 ? (char *) a->argv[3] : NULL };
        switch (cmd) {
        case CLI_INIT:
                e->command = "radio tune";
                e->usage = radio_tune_usage;
                return NULL;
        case CLI_GENERATE:
                return NULL;
   }
   return res2cli(radio_tune(a->fd, a->argc, argv));
}

static char *handle_radio_debug(struct ast_cli_entry *e,
   int cmd, struct ast_cli_args *a)
{
        switch (cmd) {
        case CLI_INIT:
                e->command = "radio debug";
                e->usage = radio_tune_usage;
                return NULL;
        case CLI_GENERATE:
                return NULL;
   }
   return res2cli(radio_set_debug(a->fd, a->argc, NULL /* ignored */));
}

static char *handle_radio_debug_off(struct ast_cli_entry *e,
   int cmd, struct ast_cli_args *a)
{
        switch (cmd) {
        case CLI_INIT:
                e->command = "radio debug off";
                e->usage = radio_tune_usage;
                return NULL;
        case CLI_GENERATE:
                return NULL;
   }
   return res2cli(radio_set_debug_off(a->fd, a->argc, NULL /* ignored */));
}

static char *handle_radio_active(struct ast_cli_entry *e,
   int cmd, struct ast_cli_args *a)
{
   char *argv[4] = { "radio", "active", a->argc > 2 ? (char *) a->argv[2] : NULL, };
        switch (cmd) {
        case CLI_INIT:
                e->command = "radio active";
                e->usage = active_usage;
                return NULL;
        case CLI_GENERATE:
                return NULL;
   }
   return res2cli(radio_active(a->fd, a->argc, argv));
}

static char *handle_set_xdebug(struct ast_cli_entry *e,
   int cmd, struct ast_cli_args *a)
{
   char *argv[5] = { "radio", "set", "xdebug", a->argc == 4 ? (char *) a->argv[3] : NULL, };
        switch (cmd) {
        case CLI_INIT:
                e->command = "radio set xdebug";
                e->usage = active_usage;
                return NULL;
        case CLI_GENERATE:
                return NULL;
   }
   return res2cli(radio_set_xpmr_debug(a->fd, a->argc, argv));
}


static struct ast_cli_entry cli_usbradio[] = {
   AST_CLI_DEFINE(handle_console_key,"Simulate Rx Signal Present"),
   AST_CLI_DEFINE(handle_console_unkey,"Simulate Rx Signal Loss"),
   AST_CLI_DEFINE(handle_radio_tune,"Radio Tune"),
   AST_CLI_DEFINE(handle_radio_debug,"Radio Debug On"),
   AST_CLI_DEFINE(handle_radio_debug_off,"Radio Debug Off"),
   AST_CLI_DEFINE(handle_radio_active,"Change commanded device"),
   AST_CLI_DEFINE(handle_set_xdebug,"Radio set xpmr debug level")
};

#endif

#include "./xpmr/xpmr.c"
#ifdef HAVE_XPMRX
#include "./xpmrx/xpmrx.c"
#endif

/*
*/
static int load_module(void)
{
   struct ast_config *cfg = NULL;
   char *ctg = NULL;
#ifdef   NEW_ASTERISK
   struct ast_flags zeroflag = {0};
#endif

   if (!(usbradio_tech.capabilities = ast_format_cap_alloc())) {
      return AST_MODULE_LOAD_DECLINE;
   }
   ast_format_cap_add(usbradio_tech.capabilities, ast_format_set(&slin, AST_FORMAT_SLINEAR, 0));

   if (hid_device_mklist()) {
      ast_log(LOG_NOTICE, "Unable to make hid list\n");
      return AST_MODULE_LOAD_DECLINE;
   }

   usb_list_check("");

   usbradio_active = NULL;

   /* Copy the default jb config over global_jbconf */
   memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));

   /* load config file */
#ifdef   NEW_ASTERISK
   if (!(cfg = ast_config_load(config,zeroflag)) || cfg == CONFIG_STATUS_FILEINVALID) {
#else
   if (!(cfg = ast_config_load(config))) || cfg == CONFIG_STATUS_FILEINVALID {
#endif
      ast_log(LOG_NOTICE, "Unable to load config %s\n", config);
      return AST_MODULE_LOAD_DECLINE;
   }

   do {
      store_config(cfg, ctg);
   } while ( (ctg = ast_category_browse(cfg, ctg)) != NULL);

   ast_config_destroy(cfg);

   if (find_desc(usbradio_active) == NULL) {
      ast_log(LOG_NOTICE, "radio active device %s not found\n", usbradio_active);
      /* XXX we could default to 'dsp' perhaps ? */
      /* XXX should cleanup allocated memory etc. */
      return AST_MODULE_LOAD_DECLINE;
   }

   if (ast_channel_register(&usbradio_tech)) {
      ast_log(LOG_ERROR, "Unable to register channel type 'usb'\n");
      return AST_MODULE_LOAD_DECLINE;
   }

   ast_cli_register_multiple(cli_usbradio, ARRAY_LEN(cli_usbradio));

   return AST_MODULE_LOAD_SUCCESS;
}
/*
*/
static int unload_module(void)
{
   struct chan_usbradio_pvt *o;

   ast_log(LOG_WARNING, "unload_module() called\n");

   ast_channel_unregister(&usbradio_tech);
   ast_cli_unregister_multiple(cli_usbradio, ARRAY_LEN(cli_usbradio));

   for (o = usbradio_default.next; o; o = o->next) {

      ast_log(LOG_WARNING, "destroyPmrChannel() called\n");
      if(o->pmrChan)destroyPmrChannel(o->pmrChan);
      
      #if DEBUG_CAPTURES == 1
      if (frxcapraw) { fclose(frxcapraw); frxcapraw = NULL; }
      if (frxcaptrace) { fclose(frxcaptrace); frxcaptrace = NULL; }
      if (frxoutraw) { fclose(frxoutraw); frxoutraw = NULL; }
      if (ftxcapraw) { fclose(ftxcapraw); ftxcapraw = NULL; }
      if (ftxcaptrace) { fclose(ftxcaptrace); ftxcaptrace = NULL; }
      if (ftxoutraw) { fclose(ftxoutraw); ftxoutraw = NULL; }
      #endif

      close(o->sounddev);
#ifndef  NEW_ASTERISK
      if (o->sndcmd[0] > 0) {
         close(o->sndcmd[0]);
         close(o->sndcmd[1]);
      }
#endif
      if (o->dsp) ast_dsp_free(o->dsp);
      if (o->owner)
         ast_softhangup(o->owner, AST_SOFTHANGUP_APPUNLOAD);
      if (o->owner)        /* XXX how ??? */
         return -1;
      /* XXX what about the thread ? */
      /* XXX what about the memory allocated ? */
   }

   usbradio_tech.capabilities = ast_format_cap_destroy(usbradio_tech.capabilities);
   return 0;
}

AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "usb Console Channel Driver");

/* end of file */