Sat Jul 26 06:13:50 2008

Asterisk developer's documentation


chan_oss.c File Reference

Channel driver for OSS sound cards. More...

#include "asterisk.h"
#include <stdio.h>
#include <ctype.h>
#include <math.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <sys/time.h>
#include <stdlib.h>
#include <errno.h>
#include <soundcard.h>
#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 "busy.h"
#include "ringtone.h"
#include "ring10.h"
#include "answer.h"

Include dependency graph for chan_oss.c:

Go to the source code of this file.

Data Structures

struct  chan_oss_pvt
struct  sound

Defines

#define BOOST_MAX   40
#define BOOST_SCALE   (1<<9)
#define DEV_DSP   "/dev/dsp"
#define FRAGS   ( ( (6 * 5) << 16 ) | 0x6 )
#define FRAME_SIZE   160
#define M_BOOL(tag, dst)   M_F(tag, (dst) = ast_true(__val) )
#define M_END(x)   x;
#define M_F(tag, f)   if (!strcasecmp((__s), tag)) { f; } else
#define M_START(var, val)   char *__s = var; char *__val = val;
#define M_STR(tag, dst)   M_F(tag, ast_copy_string(dst, __val, sizeof(dst)))
#define M_UINT(tag, dst)   M_F(tag, (dst) = strtoul(__val, NULL, 0) )
#define MAX(a, b)   ((a) > (b) ? (a) : (b))
#define MIN(a, b)   ((a) < (b) ? (a) : (b))
#define O_CLOSE   0x444
#define QUEUE_SIZE   10
#define TEXT_SIZE   256
#define WARN_frag   4
#define WARN_speed   2
#define WARN_used_blocks   1

Functions

static int __console_mute_unmute (int mute)
static char * ast_ext_ctx (const char *src, char **ext, char **ctx)
 AST_MODULE_INFO_STANDARD (ASTERISK_GPL_KEY,"OSS Console Channel Driver")
static char * autoanswer_complete (const char *line, const char *word, int pos, int state)
static char * autoanswer_complete_deprecated (const char *line, const char *word, int pos, int state)
static int console_active (int fd, int argc, char *argv[])
static int console_active_deprecated (int fd, int argc, char *argv[])
static int console_answer (int fd, int argc, char *argv[])
static int console_answer_deprecated (int fd, int argc, char *argv[])
static int console_autoanswer (int fd, int argc, char *argv[])
static int console_autoanswer_deprecated (int fd, int argc, char *argv[])
static int console_dial (int fd, int argc, char *argv[])
static int console_dial_deprecated (int fd, int argc, char *argv[])
static int console_flash (int fd, int argc, char *argv[])
static int console_flash_deprecated (int fd, int argc, char *argv[])
static int console_hangup (int fd, int argc, char *argv[])
static int console_hangup_deprecated (int fd, int argc, char *argv[])
static int console_mute (int fd, int argc, char *argv[])
static int console_mute_deprecated (int fd, int argc, char *argv[])
static int console_sendtext (int fd, int argc, char *argv[])
static int console_sendtext_deprecated (int fd, int argc, char *argv[])
static int console_transfer (int fd, int argc, char *argv[])
static int console_transfer_deprecated (int fd, int argc, char *argv[])
static int console_unmute (int fd, int argc, char *argv[])
static int console_unmute_deprecated (int fd, int argc, char *argv[])
static int do_boost (int fd, int argc, char *argv[])
static struct chan_oss_pvtfind_desc (char *dev)
static int load_module (void)
static int oss_answer (struct ast_channel *c)
static int oss_call (struct ast_channel *c, char *dest, int timeout)
static int oss_digit_begin (struct ast_channel *c, char digit)
static int oss_digit_end (struct ast_channel *c, char digit, unsigned int duration)
static int oss_fixup (struct ast_channel *oldchan, struct ast_channel *newchan)
static int oss_hangup (struct ast_channel *c)
static int oss_indicate (struct ast_channel *chan, int cond, const void *data, size_t datalen)
static struct ast_channeloss_new (struct chan_oss_pvt *o, char *ext, char *ctx, int state)
static struct ast_frameoss_read (struct ast_channel *chan)
static struct ast_channeloss_request (const char *type, int format, void *data, int *cause)
static int oss_text (struct ast_channel *c, const char *text)
static int oss_write (struct ast_channel *chan, struct ast_frame *f)
static void ring (struct chan_oss_pvt *o, int x)
static void send_sound (struct chan_oss_pvt *o)
static int setformat (struct chan_oss_pvt *o, int mode)
static void * sound_thread (void *arg)
static int soundcard_writeframe (struct chan_oss_pvt *o, short *data)
static void store_boost (struct chan_oss_pvt *o, char *s)
static void store_callerid (struct chan_oss_pvt *o, char *s)
static struct chan_oss_pvtstore_config (struct ast_config *cfg, char *ctg)
static void store_mixer (struct chan_oss_pvt *o, char *s)
static int unload_module (void)
static int used_blocks (struct chan_oss_pvt *o)

Variables

static char active_usage []
static char answer_usage []
static char autoanswer_usage []
static struct ast_cli_entry cli_oss []
static struct ast_cli_entry cli_oss_active_deprecated
static struct ast_cli_entry cli_oss_answer_deprecated
static struct ast_cli_entry cli_oss_autoanswer_deprecated
static struct ast_cli_entry cli_oss_boost_deprecated
static struct ast_cli_entry cli_oss_dial_deprecated
static struct ast_cli_entry cli_oss_flash_deprecated
static struct ast_cli_entry cli_oss_hangup_deprecated
static struct ast_cli_entry cli_oss_mute_deprecated
static struct ast_cli_entry cli_oss_send_text_deprecated
static struct ast_cli_entry cli_oss_transfer_deprecated
static struct ast_cli_entry cli_oss_unmute_deprecated
static char * config = "oss.conf"
static struct ast_jb_conf default_jbconf
static char dial_usage []
static char flash_usage []
static struct ast_jb_conf global_jbconf
static char hangup_usage []
static char mute_usage []
static char * oss_active
static int oss_debug
static struct chan_oss_pvt oss_default
static struct ast_channel_tech oss_tech
static char sendtext_usage []
static struct sound sounds []
static char tdesc [] = "OSS Console Channel Driver"
static char transfer_usage []
static char unmute_usage []


Detailed Description

Channel driver for OSS sound cards.

Author:
Mark Spencer <markster@digium.com>

Luigi Rizzo

See also

Definition in file chan_oss.c.


Define Documentation

#define BOOST_MAX   40

Definition at line 360 of file chan_oss.c.

Referenced by store_boost().

#define BOOST_SCALE   (1<<9)

Definition at line 359 of file chan_oss.c.

Referenced by do_boost(), oss_read(), and store_boost().

#define DEV_DSP   "/dev/dsp"

Definition at line 274 of file chan_oss.c.

Referenced by store_config().

#define FRAGS   ( ( (6 * 5) << 16 ) | 0x6 )

Definition at line 257 of file chan_oss.c.

#define FRAME_SIZE   160

Definition at line 251 of file chan_oss.c.

#define M_BOOL ( tag,
dst   )     M_F(tag, (dst) = ast_true(__val) )

Definition at line 217 of file chan_oss.c.

Referenced by store_config().

#define M_END (  )     x;

Definition at line 215 of file chan_oss.c.

Referenced by store_config().

#define M_F ( tag,
f   )     if (!strcasecmp((__s), tag)) { f; } else

Definition at line 216 of file chan_oss.c.

Referenced by store_config().

#define M_START ( var,
val   )     char *__s = var; char *__val = val;

Definition at line 213 of file chan_oss.c.

Referenced by store_config().

#define M_STR ( tag,
dst   )     M_F(tag, ast_copy_string(dst, __val, sizeof(dst)))

Definition at line 219 of file chan_oss.c.

Referenced by store_config().

#define M_UINT ( tag,
dst   )     M_F(tag, (dst) = strtoul(__val, NULL, 0) )

Definition at line 218 of file chan_oss.c.

Referenced by store_config().

#define MAX ( a,
 )     ((a) > (b) ? (a) : (b))

Definition at line 281 of file chan_oss.c.

#define MIN ( a,
 )     ((a) < (b) ? (a) : (b))

Definition at line 278 of file chan_oss.c.

#define O_CLOSE   0x444

Definition at line 269 of file chan_oss.c.

Referenced by console_hangup(), console_hangup_deprecated(), oss_hangup(), setformat(), and sound_thread().

#define QUEUE_SIZE   10

Definition at line 252 of file chan_oss.c.

#define TEXT_SIZE   256

Definition at line 264 of file chan_oss.c.

Referenced by console_sendtext(), and console_sendtext_deprecated().

#define WARN_frag   4

Definition at line 349 of file chan_oss.c.

Referenced by setformat().

#define WARN_speed   2

Definition at line 348 of file chan_oss.c.

Referenced by setformat().

#define WARN_used_blocks   1

Definition at line 347 of file chan_oss.c.

Referenced by used_blocks().


Function Documentation

static int __console_mute_unmute ( int  mute  )  [static]

Definition at line 1406 of file chan_oss.c.

References find_desc(), chan_oss_pvt::mute, oss_active, and RESULT_SUCCESS.

Referenced by console_mute(), console_mute_deprecated(), console_unmute(), and console_unmute_deprecated().

01407 {
01408    struct chan_oss_pvt *o = find_desc(oss_active);
01409    
01410    o->mute = mute;
01411    return RESULT_SUCCESS;
01412 }

static char* ast_ext_ctx ( const char *  src,
char **  ext,
char **  ctx 
) [static]

Definition at line 462 of file chan_oss.c.

References ast_strdup, find_desc(), and chan_oss_pvt::overridecontext.

Referenced by console_dial(), console_dial_deprecated(), console_transfer(), and console_transfer_deprecated().

00463 {
00464    struct chan_oss_pvt *o = find_desc(oss_active);
00465 
00466    if (ext == NULL || ctx == NULL)
00467       return NULL;         /* error */
00468 
00469    *ext = *ctx = NULL;
00470 
00471    if (src && *src != '\0')
00472       *ext = ast_strdup(src);
00473 
00474    if (*ext == NULL)
00475       return NULL;
00476 
00477    if (!o->overridecontext) {
00478       /* parse from the right */
00479       *ctx = strrchr(*ext, '@');
00480       if (*ctx)
00481          *(*ctx)++ = '\0';
00482    }
00483 
00484    return *ext;
00485 }

AST_MODULE_INFO_STANDARD ( ASTERISK_GPL_KEY  ,
"OSS Console Channel Driver"   
)

static char* autoanswer_complete ( const char *  line,
const char *  word,
int  pos,
int  state 
) [static]

Definition at line 1114 of file chan_oss.c.

References ast_cli_complete().

01115 {
01116    static char *choices[] = { "on", "off", NULL };
01117 
01118    return (pos != 3) ? NULL : ast_cli_complete(word, choices, state);
01119 }

static char* autoanswer_complete_deprecated ( const char *  line,
const char *  word,
int  pos,
int  state 
) [static]

Definition at line 1107 of file chan_oss.c.

References ast_cli_complete().

01108 {
01109    static char *choices[] = { "on", "off", NULL };
01110 
01111    return (pos != 2) ? NULL : ast_cli_complete(word, choices, state);
01112 }

static int console_active ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1540 of file chan_oss.c.

References ast_cli(), find_desc(), chan_oss_pvt::name, chan_oss_pvt::next, oss_active, oss_default, RESULT_SHOWUSAGE, and RESULT_SUCCESS.

01541 {
01542    if (argc == 2)
01543       ast_cli(fd, "active console is [%s]\n", oss_active);
01544    else if (argc != 3)
01545       return RESULT_SHOWUSAGE;
01546    else {
01547       struct chan_oss_pvt *o;
01548       if (strcmp(argv[2], "show") == 0) {
01549          for (o = oss_default.next; o; o = o->next)
01550             ast_cli(fd, "device [%s] exists\n", o->name);
01551          return RESULT_SUCCESS;
01552       }
01553       o = find_desc(argv[2]);
01554       if (o == NULL)
01555          ast_cli(fd, "No device [%s] exists\n", argv[2]);
01556       else
01557          oss_active = o->name;
01558    }
01559    return RESULT_SUCCESS;
01560 }

static int console_active_deprecated ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1518 of file chan_oss.c.

References ast_cli(), find_desc(), chan_oss_pvt::name, chan_oss_pvt::next, oss_active, oss_default, RESULT_SHOWUSAGE, and RESULT_SUCCESS.

01519 {
01520    if (argc == 1)
01521       ast_cli(fd, "active console is [%s]\n", oss_active);
01522    else if (argc != 2)
01523       return RESULT_SHOWUSAGE;
01524    else {
01525       struct chan_oss_pvt *o;
01526       if (strcmp(argv[1], "show") == 0) {
01527          for (o = oss_default.next; o; o = o->next)
01528             ast_cli(fd, "device [%s] exists\n", o->name);
01529          return RESULT_SUCCESS;
01530       }
01531       o = find_desc(argv[1]);
01532       if (o == NULL)
01533          ast_cli(fd, "No device [%s] exists\n", argv[1]);
01534       else
01535          oss_active = o->name;
01536    }
01537    return RESULT_SUCCESS;
01538 }

static int console_answer ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1152 of file chan_oss.c.

References ast_cli(), AST_CONTROL_ANSWER, AST_FRAME_CONTROL, ast_queue_frame(), chan_oss_pvt::cursound, f, find_desc(), chan_oss_pvt::hookstate, chan_oss_pvt::nosound, oss_active, chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, and ring().

01153 {
01154    struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_ANSWER };
01155    struct chan_oss_pvt *o = find_desc(oss_active);
01156 
01157    if (argc != 2)
01158       return RESULT_SHOWUSAGE;
01159    if (!o->owner) {
01160       ast_cli(fd, "No one is calling us\n");
01161       return RESULT_FAILURE;
01162    }
01163    o->hookstate = 1;
01164    o->cursound = -1;
01165    o->nosound = 0;
01166    ast_queue_frame(o->owner, &f);
01167 #if 0
01168    /* XXX do we really need it ? considering we shut down immediately... */
01169    ring(o, AST_CONTROL_ANSWER);
01170 #endif
01171    return RESULT_SUCCESS;
01172 }

static int console_answer_deprecated ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1130 of file chan_oss.c.

References ast_cli(), AST_CONTROL_ANSWER, AST_FRAME_CONTROL, ast_queue_frame(), chan_oss_pvt::cursound, f, find_desc(), chan_oss_pvt::hookstate, chan_oss_pvt::nosound, oss_active, chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, and ring().

01131 {
01132    struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_ANSWER };
01133    struct chan_oss_pvt *o = find_desc(oss_active);
01134 
01135    if (argc != 1)
01136       return RESULT_SHOWUSAGE;
01137    if (!o->owner) {
01138       ast_cli(fd, "No one is calling us\n");
01139       return RESULT_FAILURE;
01140    }
01141    o->hookstate = 1;
01142    o->cursound = -1;
01143    o->nosound = 0;
01144    ast_queue_frame(o->owner, &f);
01145 #if 0
01146    /* XXX do we really need it ? considering we shut down immediately... */
01147    ring(o, AST_CONTROL_ANSWER);
01148 #endif
01149    return RESULT_SUCCESS;
01150 }

static int console_autoanswer ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1083 of file chan_oss.c.

References ast_cli(), ast_log(), chan_oss_pvt::autoanswer, find_desc(), LOG_WARNING, oss_active, RESULT_FAILURE, RESULT_SHOWUSAGE, and RESULT_SUCCESS.

01084 {
01085    struct chan_oss_pvt *o = find_desc(oss_active);
01086 
01087    if (argc == 2) {
01088       ast_cli(fd, "Auto answer is %s.\n", o->autoanswer ? "on" : "off");
01089       return RESULT_SUCCESS;
01090    }
01091    if (argc != 3)
01092       return RESULT_SHOWUSAGE;
01093    if (o == NULL) {
01094       ast_log(LOG_WARNING, "Cannot find device %s (should not happen!)\n",
01095           oss_active);
01096       return RESULT_FAILURE;
01097    }
01098    if (!strcasecmp(argv[2], "on"))
01099       o->autoanswer = -1;
01100    else if (!strcasecmp(argv[2], "off"))
01101       o->autoanswer = 0;
01102    else
01103       return RESULT_SHOWUSAGE;
01104    return RESULT_SUCCESS;
01105 }

static int console_autoanswer_deprecated ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1060 of file chan_oss.c.

References ast_cli(), ast_log(), chan_oss_pvt::autoanswer, find_desc(), LOG_WARNING, oss_active, RESULT_FAILURE, RESULT_SHOWUSAGE, and RESULT_SUCCESS.

01061 {
01062    struct chan_oss_pvt *o = find_desc(oss_active);
01063 
01064    if (argc == 1) {
01065       ast_cli(fd, "Auto answer is %s.\n", o->autoanswer ? "on" : "off");
01066       return RESULT_SUCCESS;
01067    }
01068    if (argc != 2)
01069       return RESULT_SHOWUSAGE;
01070    if (o == NULL) {
01071       ast_log(LOG_WARNING, "Cannot find device %s (should not happen!)\n", oss_active);
01072       return RESULT_FAILURE;
01073    }
01074    if (!strcasecmp(argv[1], "on"))
01075       o->autoanswer = -1;
01076    else if (!strcasecmp(argv[1], "off"))
01077       o->autoanswer = 0;
01078    else
01079       return RESULT_SHOWUSAGE;
01080    return RESULT_SUCCESS;
01081 }

static int console_dial ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1361 of file chan_oss.c.

References ast_cli(), ast_exists_extension(), ast_ext_ctx(), AST_FRAME_DTMF, ast_queue_frame(), AST_STATE_RINGING, chan_oss_pvt::ctx, chan_oss_pvt::ext, f, find_desc(), free, chan_oss_pvt::hookstate, oss_active, oss_new(), chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, and s.

01362 {
01363    char *s = NULL, *mye = NULL, *myc = NULL;
01364    struct chan_oss_pvt *o = find_desc(oss_active);
01365 
01366    if (argc != 2 && argc != 3)
01367       return RESULT_SHOWUSAGE;
01368    if (o->owner) {   /* already in a call */
01369       int i;
01370       struct ast_frame f = { AST_FRAME_DTMF, 0 };
01371 
01372       if (argc == 2) {  /* argument is mandatory here */
01373          ast_cli(fd, "Already in a call. You can only dial digits until you hangup.\n");
01374          return RESULT_FAILURE;
01375       }
01376       s = argv[2];
01377       /* send the string one char at a time */
01378       for (i = 0; i < strlen(s); i++) {
01379          f.subclass = s[i];
01380          ast_queue_frame(o->owner, &f);
01381       }
01382       return RESULT_SUCCESS;
01383    }
01384    /* if we have an argument split it into extension and context */
01385    if (argc == 3)
01386       s = ast_ext_ctx(argv[2], &mye, &myc);
01387    /* supply default values if needed */
01388    if (mye == NULL)
01389       mye = o->ext;
01390    if (myc == NULL)
01391       myc = o->ctx;
01392    if (ast_exists_extension(NULL, myc, mye, 1, NULL)) {
01393       o->hookstate = 1;
01394       oss_new(o, mye, myc, AST_STATE_RINGING);
01395    } else
01396       ast_cli(fd, "No such extension '%s' in context '%s'\n", mye, myc);
01397    if (s)
01398       free(s);
01399    return RESULT_SUCCESS;
01400 }

static int console_dial_deprecated ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1320 of file chan_oss.c.

References ast_cli(), ast_exists_extension(), ast_ext_ctx(), AST_FRAME_DTMF, ast_queue_frame(), AST_STATE_RINGING, chan_oss_pvt::ctx, chan_oss_pvt::ext, f, find_desc(), free, chan_oss_pvt::hookstate, oss_active, oss_new(), chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, and s.

01321 {
01322    char *s = NULL, *mye = NULL, *myc = NULL;
01323    struct chan_oss_pvt *o = find_desc(oss_active);
01324 
01325    if (argc != 1 && argc != 2)
01326       return RESULT_SHOWUSAGE;
01327    if (o->owner) { /* already in a call */
01328       int i;
01329       struct ast_frame f = { AST_FRAME_DTMF, 0 };
01330 
01331       if (argc == 1) { /* argument is mandatory here */
01332          ast_cli(fd, "Already in a call. You can only dial digits until you hangup.\n");
01333          return RESULT_FAILURE;
01334       }
01335       s = argv[1];
01336       /* send the string one char at a time */
01337       for (i = 0; i < strlen(s); i++) {
01338          f.subclass = s[i];
01339          ast_queue_frame(o->owner, &f);
01340       }
01341       return RESULT_SUCCESS;
01342    }
01343    /* if we have an argument split it into extension and context */
01344    if (argc == 2)
01345       s = ast_ext_ctx(argv[1], &mye, &myc);
01346    /* supply default values if needed */
01347    if (mye == NULL)
01348       mye = o->ext;
01349    if (myc == NULL)
01350       myc = o->ctx;
01351    if (ast_exists_extension(NULL, myc, mye, 1, NULL)) {
01352       o->hookstate = 1;
01353       oss_new(o, mye, myc, AST_STATE_RINGING);
01354    } else
01355       ast_cli(fd, "No such extension '%s' in context '%s'\n", mye, myc);
01356    if (s)
01357       free(s);
01358    return RESULT_SUCCESS;
01359 }

static int console_flash ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1297 of file chan_oss.c.

References ast_cli(), AST_CONTROL_FLASH, AST_FRAME_CONTROL, ast_queue_frame(), chan_oss_pvt::cursound, f, find_desc(), chan_oss_pvt::hookstate, chan_oss_pvt::nosound, oss_active, chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, and RESULT_SUCCESS.

01298 {
01299    struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_FLASH };
01300    struct chan_oss_pvt *o = find_desc(oss_active);
01301 
01302    if (argc != 2)
01303       return RESULT_SHOWUSAGE;
01304    o->cursound = -1;
01305    o->nosound = 0;            /* when cursound is -1 nosound must be 0 */
01306    if (!o->owner) {        /* XXX maybe !o->hookstate too ? */
01307       ast_cli(fd, "No call to flash\n");
01308       return RESULT_FAILURE;
01309    }
01310    o->hookstate = 0;
01311    if (o->owner)           /* XXX must be true, right ? */
01312       ast_queue_frame(o->owner, &f);
01313    return RESULT_SUCCESS;
01314 }

static int console_flash_deprecated ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1278 of file chan_oss.c.

References ast_cli(), AST_CONTROL_FLASH, AST_FRAME_CONTROL, ast_queue_frame(), chan_oss_pvt::cursound, f, find_desc(), chan_oss_pvt::hookstate, chan_oss_pvt::nosound, oss_active, chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, and RESULT_SUCCESS.

01279 {
01280    struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_FLASH };
01281    struct chan_oss_pvt *o = find_desc(oss_active);
01282 
01283    if (argc != 1)
01284       return RESULT_SHOWUSAGE;
01285    o->cursound = -1;
01286    o->nosound = 0; /* when cursound is -1 nosound must be 0 */
01287    if (!o->owner) { /* XXX maybe !o->hookstate too ? */
01288       ast_cli(fd, "No call to flash\n");
01289       return RESULT_FAILURE;
01290    }
01291    o->hookstate = 0;
01292    if (o->owner) /* XXX must be true, right ? */
01293       ast_queue_frame(o->owner, &f);
01294    return RESULT_SUCCESS;
01295 }

static int console_hangup ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1255 of file chan_oss.c.

References ast_cli(), ast_queue_hangup(), chan_oss_pvt::cursound, find_desc(), chan_oss_pvt::hookstate, chan_oss_pvt::nosound, O_CLOSE, oss_active, chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, and setformat().

01256 {
01257    struct chan_oss_pvt *o = find_desc(oss_active);
01258 
01259    if (argc != 2)
01260       return RESULT_SHOWUSAGE;
01261    o->cursound = -1;
01262    o->nosound = 0;
01263    if (!o->owner && !o->hookstate) { /* XXX maybe only one ? */
01264       ast_cli(fd, "No call to hang up\n");
01265       return RESULT_FAILURE;
01266    }
01267    o->hookstate = 0;
01268    if (o->owner)
01269       ast_queue_hangup(o->owner);
01270    setformat(o, O_CLOSE);
01271    return RESULT_SUCCESS;
01272 }

static int console_hangup_deprecated ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1236 of file chan_oss.c.

References ast_cli(), ast_queue_hangup(), chan_oss_pvt::cursound, find_desc(), chan_oss_pvt::hookstate, chan_oss_pvt::nosound, O_CLOSE, oss_active, chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, and setformat().

01237 {
01238    struct chan_oss_pvt *o = find_desc(oss_active);
01239 
01240    if (argc != 1)
01241       return RESULT_SHOWUSAGE;
01242    o->cursound = -1;
01243    o->nosound = 0;
01244    if (!o->owner && !o->hookstate) { /* XXX maybe only one ? */
01245       ast_cli(fd, "No call to hang up\n");
01246       return RESULT_FAILURE;
01247    }
01248    o->hookstate = 0;
01249    if (o->owner)
01250       ast_queue_hangup(o->owner);
01251    setformat(o, O_CLOSE);
01252    return RESULT_SUCCESS;
01253 }

static int console_mute ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1422 of file chan_oss.c.

References __console_mute_unmute(), and RESULT_SHOWUSAGE.

01423 {
01424    if (argc != 2)
01425       return RESULT_SHOWUSAGE;
01426 
01427    return __console_mute_unmute(1);
01428 }

static int console_mute_deprecated ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1414 of file chan_oss.c.

References __console_mute_unmute(), and RESULT_SHOWUSAGE.

01415 {
01416    if (argc != 1)
01417       return RESULT_SHOWUSAGE;
01418 
01419    return __console_mute_unmute(1);
01420 }

static int console_sendtext ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1207 of file chan_oss.c.

References ast_cli(), AST_FRAME_TEXT, ast_join(), ast_queue_frame(), ast_strlen_zero(), f, find_desc(), oss_active, chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, and TEXT_SIZE.

01208 {
01209    struct chan_oss_pvt *o = find_desc(oss_active);
01210    char buf[TEXT_SIZE];
01211 
01212    if (argc < 3)
01213       return RESULT_SHOWUSAGE;
01214    if (!o->owner) {
01215       ast_cli(fd, "Not in a call\n");
01216       return RESULT_FAILURE;
01217    }
01218    ast_join(buf, sizeof(buf) - 1, argv + 3);
01219    if (!ast_strlen_zero(buf)) {
01220       struct ast_frame f = { 0, };
01221       int i = strlen(buf);
01222       buf[i] = '\n';
01223       f.frametype = AST_FRAME_TEXT;
01224       f.subclass = 0;
01225       f.data = buf;
01226       f.datalen = i + 1;
01227       ast_queue_frame(o->owner, &f);
01228    }
01229    return RESULT_SUCCESS;
01230 }

static int console_sendtext_deprecated ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1182 of file chan_oss.c.

References ast_cli(), AST_FRAME_TEXT, ast_join(), ast_queue_frame(), ast_strlen_zero(), f, find_desc(), oss_active, chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, RESULT_SUCCESS, and TEXT_SIZE.

01183 {
01184    struct chan_oss_pvt *o = find_desc(oss_active);
01185    char buf[TEXT_SIZE];
01186 
01187    if (argc < 2)
01188       return RESULT_SHOWUSAGE;
01189    if (!o->owner) {
01190       ast_cli(fd, "Not in a call\n");
01191       return RESULT_FAILURE;
01192    }
01193    ast_join(buf, sizeof(buf) - 1, argv + 2);
01194    if (!ast_strlen_zero(buf)) {
01195       struct ast_frame f = { 0, };
01196       int i = strlen(buf);
01197       buf[i] = '\n';
01198       f.frametype = AST_FRAME_TEXT;
01199       f.subclass = 0;
01200       f.data = buf;
01201       f.datalen = i + 1;
01202       ast_queue_frame(o->owner, &f);
01203    }
01204    return RESULT_SUCCESS;
01205 }

static int console_transfer ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1483 of file chan_oss.c.

References ast_async_goto(), ast_bridged_channel(), ast_cli(), ast_exists_extension(), ast_ext_ctx(), ast_channel::cid, ast_callerid::cid_num, ast_channel::context, ext, find_desc(), free, oss_active, chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, and RESULT_SUCCESS.

01484 {
01485    struct chan_oss_pvt *o = find_desc(oss_active);
01486    struct ast_channel *b = NULL;
01487    char *tmp, *ext, *ctx;
01488 
01489    if (argc != 3)
01490       return RESULT_SHOWUSAGE;
01491    if (o == NULL)
01492       return RESULT_FAILURE;
01493    if (o->owner == NULL || (b = ast_bridged_channel(o->owner)) == NULL) {
01494       ast_cli(fd, "There is no call to transfer\n");
01495       return RESULT_SUCCESS;
01496    }
01497 
01498    tmp = ast_ext_ctx(argv[2], &ext, &ctx);
01499    if (ctx == NULL)        /* supply default context if needed */
01500       ctx = o->owner->context;
01501    if (!ast_exists_extension(b, ctx, ext, 1, b->cid.cid_num))
01502       ast_cli(fd, "No such extension exists\n");
01503    else {
01504       ast_cli(fd, "Whee, transferring %s to %s@%s.\n", b->name, ext, ctx);
01505       if (ast_async_goto(b, ctx, ext, 1))
01506          ast_cli(fd, "Failed to transfer :(\n");
01507    }
01508    if (tmp)
01509       free(tmp);
01510    return RESULT_SUCCESS;
01511 }

static int console_transfer_deprecated ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1452 of file chan_oss.c.

References ast_async_goto(), ast_bridged_channel(), ast_cli(), ast_exists_extension(), ast_ext_ctx(), ast_channel::cid, ast_callerid::cid_num, ast_channel::context, ext, find_desc(), free, oss_active, chan_oss_pvt::owner, RESULT_FAILURE, RESULT_SHOWUSAGE, and RESULT_SUCCESS.

01453 {
01454    struct chan_oss_pvt *o = find_desc(oss_active);
01455    struct ast_channel *b = NULL;
01456    char *tmp, *ext, *ctx;
01457 
01458    if (argc != 2)
01459       return RESULT_SHOWUSAGE;
01460    if (o == NULL)
01461       return RESULT_FAILURE;
01462    if (o->owner ==NULL || (b = ast_bridged_channel(o->owner)) == NULL) {
01463       ast_cli(fd, "There is no call to transfer\n");
01464       return RESULT_SUCCESS;
01465    }
01466 
01467    tmp = ast_ext_ctx(argv[1], &ext, &ctx);
01468    if (ctx == NULL)     /* supply default context if needed */
01469       ctx = o->owner->context;
01470    if (!ast_exists_extension(b, ctx, ext, 1, b->cid.cid_num))
01471       ast_cli(fd, "No such extension exists\n");
01472    else {
01473       ast_cli(fd, "Whee, transferring %s to %s@%s.\n",
01474          b->name, ext, ctx);
01475       if (ast_async_goto(b, ctx, ext, 1))
01476          ast_cli(fd, "Failed to transfer :(\n");
01477    }
01478    if (tmp)
01479       free(tmp);
01480    return RESULT_SUCCESS;
01481 }

static int console_unmute ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1441 of file chan_oss.c.

References __console_mute_unmute(), and RESULT_SHOWUSAGE.

01442 {
01443    if (argc != 2)
01444       return RESULT_SHOWUSAGE;
01445 
01446    return __console_mute_unmute(0);
01447 }

static int console_unmute_deprecated ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1433 of file chan_oss.c.

References __console_mute_unmute(), and RESULT_SHOWUSAGE.

01434 {
01435    if (argc != 1)
01436       return RESULT_SHOWUSAGE;
01437 
01438    return __console_mute_unmute(0);
01439 }

static int do_boost ( int  fd,
int  argc,
char *  argv[] 
) [static]

Definition at line 1590 of file chan_oss.c.

References ast_cli(), chan_oss_pvt::boost, BOOST_SCALE, find_desc(), oss_active, RESULT_SUCCESS, and store_boost().

01591 {
01592    struct chan_oss_pvt *o = find_desc(oss_active);
01593 
01594    if (argc == 2)
01595       ast_cli(fd, "boost currently %5.1f\n", 20 * log10(((double) o->boost / (double) BOOST_SCALE)));
01596    else if (argc == 3)
01597       store_boost(o, argv[2]);
01598    return RESULT_SUCCESS;
01599 }

static struct chan_oss_pvt* find_desc ( char *  dev  )  [static]

Definition at line 438 of file chan_oss.c.

References ast_log(), LOG_WARNING, chan_oss_pvt::name, chan_oss_pvt::next, and oss_default.

Referenced by __console_mute_unmute(), ast_ext_ctx(), console_active(), console_active_deprecated(), console_answer(), console_answer_deprecated(), console_autoanswer(), console_autoanswer_deprecated(), console_dial(), console_dial_deprecated(), console_flash(), console_flash_deprecated(), console_hangup(), console_hangup_deprecated(), console_sendtext(), console_sendtext_deprecated(), console_transfer(), console_transfer_deprecated(), do_boost(), load_module(), and oss_request().

00439 {
00440    struct chan_oss_pvt *o = NULL;
00441 
00442    if (!dev)
00443       ast_log(LOG_WARNING, "null dev\n");
00444 
00445    for (o = oss_default.next; o && o->name && dev && strcmp(o->name, dev) != 0; o = o->next);
00446 
00447    if (!o)
00448       ast_log(LOG_WARNING, "could not find <%s>\n", dev ? dev : "--no-device--");
00449 
00450    return o;
00451 }

static int load_module ( void   )  [static]

Definition at line 1826 of file chan_oss.c.

References ast_category_browse(), ast_channel_register(), ast_cli_register_multiple(), ast_config_destroy(), ast_config_load(), ast_log(), AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, cli_oss, default_jbconf, find_desc(), global_jbconf, LOG_ERROR, LOG_NOTICE, oss_active, oss_tech, and store_config().

01827 {
01828    struct ast_config *cfg = NULL;
01829    char *ctg = NULL;
01830 
01831    /* Copy the default jb config over global_jbconf */
01832    memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));
01833 
01834    /* load config file */
01835    if (!(cfg = ast_config_load(config))) {
01836       ast_log(LOG_NOTICE, "Unable to load config %s\n", config);
01837       return AST_MODULE_LOAD_DECLINE;
01838    }
01839 
01840    do {
01841       store_config(cfg, ctg);
01842    } while ( (ctg = ast_category_browse(cfg, ctg)) != NULL);
01843 
01844    ast_config_destroy(cfg);
01845 
01846    if (find_desc(oss_active) == NULL) {
01847       ast_log(LOG_NOTICE, "Device %s not found\n", oss_active);
01848       /* XXX we could default to 'dsp' perhaps ? */
01849       /* XXX should cleanup allocated memory etc. */
01850       return AST_MODULE_LOAD_FAILURE;
01851    }
01852 
01853    if (ast_channel_register(&oss_tech)) {
01854       ast_log(LOG_ERROR, "Unable to register channel type 'OSS'\n");
01855       return AST_MODULE_LOAD_FAILURE;
01856    }
01857 
01858    ast_cli_register_multiple(cli_oss, sizeof(cli_oss) / sizeof(struct ast_cli_entry));
01859 
01860    return AST_MODULE_LOAD_SUCCESS;
01861 }

static int oss_answer ( struct ast_channel c  )  [static]

Definition at line 817 of file chan_oss.c.

References AST_CONTROL_ANSWER, ast_setstate(), AST_STATE_UP, ast_verbose(), chan_oss_pvt::cursound, chan_oss_pvt::nosound, ring(), and ast_channel::tech_pvt.

00818 {
00819    struct chan_oss_pvt *o = c->tech_pvt;
00820 
00821    ast_verbose(" << Console call has been answered >> \n");
00822 #if 0
00823    /* play an answer tone (XXX do we really need it ?) */
00824    ring(o, AST_CONTROL_ANSWER);
00825 #endif
00826    ast_setstate(c, AST_STATE_UP);
00827    o->cursound = -1;
00828    o->nosound = 0;
00829    return 0;
00830 }

static int oss_call ( struct ast_channel c,
char *  dest,
int  timeout 
) [static]

Definition at line 793 of file chan_oss.c.

References AST_CONTROL_ANSWER, AST_CONTROL_RING, AST_CONTROL_RINGING, AST_FRAME_CONTROL, ast_queue_frame(), ast_verbose(), chan_oss_pvt::autoanswer, ast_channel::cid, ast_callerid::cid_dnid, ast_callerid::cid_name, ast_callerid::cid_num, ast_callerid::cid_rdnis, f, ring(), and ast_channel::tech_pvt.

00794 {
00795    struct chan_oss_pvt *o = c->tech_pvt;
00796    struct ast_frame f = { 0, };
00797 
00798    ast_verbose(" << Call to device '%s' dnid '%s' rdnis '%s' on console from '%s' <%s> >>\n", dest, c->cid.cid_dnid, c->cid.cid_rdnis, c->cid.cid_name, c->cid.cid_num);
00799    if (o->autoanswer) {
00800       ast_verbose(" << Auto-answered >> \n");
00801       f.frametype = AST_FRAME_CONTROL;
00802       f.subclass = AST_CONTROL_ANSWER;
00803       ast_queue_frame(c, &f);
00804    } else {
00805       ast_verbose("<< Type 'answer' to answer, or use 'autoanswer' for future calls >> \n");
00806       f.frametype = AST_FRAME_CONTROL;
00807       f.subclass = AST_CONTROL_RINGING;
00808       ast_queue_frame(c, &f);
00809       ring(o, AST_CONTROL_RING);
00810    }
00811    return 0;
00812 }

static int oss_digit_begin ( struct ast_channel c,
char  digit 
) [static]

Definition at line 763 of file chan_oss.c.

00764 {
00765    return 0;
00766 }

static int oss_digit_end ( struct ast_channel c,
char  digit,
unsigned int  duration 
) [static]

Definition at line 768 of file chan_oss.c.

References ast_verbose().

00769 {
00770    /* no better use for received digits than print them */
00771    ast_verbose(" << Console Received digit %c of duration %u ms >> \n", 
00772       digit, duration);
00773    return 0;
00774 }

static int oss_fixup ( struct ast_channel oldchan,
struct ast_channel newchan 
) [static]

Definition at line 941 of file chan_oss.c.

References chan_oss_pvt::owner, and ast_channel::tech_pvt.

00942 {
00943    struct chan_oss_pvt *o = newchan->tech_pvt;
00944    o->owner = newchan;
00945    return 0;
00946 }

static int oss_hangup ( struct ast_channel c  )  [static]

Definition at line 832 of file chan_oss.c.

References AST_CONTROL_CONGESTION, ast_module_unref(), ast_verbose(), chan_oss_pvt::autoanswer, chan_oss_pvt::autohangup, chan_oss_pvt::cursound, chan_oss_pvt::hookstate, chan_oss_pvt::nosound, O_CLOSE, chan_oss_pvt::owner, ring(), setformat(), and ast_channel::tech_pvt.

00833 {
00834    struct chan_oss_pvt *o = c->tech_pvt;
00835 
00836    o->cursound = -1;
00837    o->nosound = 0;
00838    c->tech_pvt = NULL;
00839    o->owner = NULL;
00840    ast_verbose(" << Hangup on console >> \n");
00841    ast_module_unref(ast_module_info->self);
00842    if (o->hookstate) {
00843       if (o->autoanswer || o->autohangup) {
00844          /* Assume auto-hangup too */
00845          o->hookstate = 0;
00846          setformat(o, O_CLOSE);
00847       } else {
00848          /* Make congestion noise */
00849          ring(o, AST_CONTROL_CONGESTION);
00850       }
00851    }
00852    return 0;
00853 }

static int oss_indicate ( struct ast_channel chan,
int  cond,
const void *  data,
size_t  datalen 
) [static]

Definition at line 948 of file chan_oss.c.

References AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HOLD, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, ast_log(), ast_moh_start(), ast_moh_stop(), ast_verbose(), chan_oss_pvt::cursound, LOG_WARNING, chan_oss_pvt::mohinterpret, chan_oss_pvt::nosound, ring(), and ast_channel::tech_pvt.

00949 {
00950    struct chan_oss_pvt *o = c->tech_pvt;
00951    int res = -1;
00952 
00953    switch (cond) {
00954    case AST_CONTROL_BUSY:
00955    case AST_CONTROL_CONGESTION:
00956    case AST_CONTROL_RINGING:
00957          res = cond;
00958          break;
00959          
00960    case -1:
00961       o->cursound = -1;
00962       o->nosound = 0;      /* when cursound is -1 nosound must be 0 */
00963       return 0;
00964       
00965    case AST_CONTROL_VIDUPDATE:
00966       res = -1;
00967       break;
00968    case AST_CONTROL_HOLD:
00969       ast_verbose(" << Console Has Been Placed on Hold >> \n");
00970       ast_moh_start(c, data, o->mohinterpret);
00971          break;
00972    case AST_CONTROL_UNHOLD:
00973       ast_verbose(" << Console Has Been Retrieved from Hold >> \n");
00974       ast_moh_stop(c);
00975       break;
00976    case AST_CONTROL_SRCUPDATE:
00977       break;
00978    default:
00979       ast_log(LOG_WARNING, "Don't know how to display condition %d on %s\n", cond, c->name);
00980       return -1;
00981    }
00982 
00983    if (res > -1)
00984       ring(o, res);
00985 
00986    return 0;
00987 }

static struct ast_channel* oss_new ( struct chan_oss_pvt o,
char *  ext,
char *  ctx,
int  state 
) [static]

Definition at line 992 of file chan_oss.c.

References ast_channel_alloc(), AST_FORMAT_SLINEAR, ast_hangup(), ast_jb_configure(), ast_log(), ast_module_ref(), ast_pbx_start(), AST_STATE_DOWN, ast_strdup, ast_string_field_set, ast_strlen_zero(), ast_channel::cid, ast_callerid::cid_ani, ast_callerid::cid_dnid, chan_oss_pvt::cid_name, chan_oss_pvt::cid_num, chan_oss_pvt::device, ast_channel::fds, global_jbconf, language, chan_oss_pvt::language, LOG_WARNING, ast_channel::nativeformats, oss_tech, chan_oss_pvt::owner, ast_channel::readformat, setformat(), chan_oss_pvt::sounddev, ast_channel::tech, ast_channel::tech_pvt, and ast_channel::writeformat.

Referenced by console_dial(), console_dial_deprecated(), and oss_request().

00993 {
00994    struct ast_channel *c;
00995 
00996    c = ast_channel_alloc(1, state, o->cid_num, o->cid_name, "", ext, ctx, 0, "Console/%s", o->device + 5);
00997    if (c == NULL)
00998       return NULL;
00999    c->tech = &oss_tech;
01000    if (o->sounddev < 0)
01001       setformat(o, O_RDWR);
01002    c->fds[0] = o->sounddev;   /* -1 if device closed, override later */
01003    c->nativeformats = AST_FORMAT_SLINEAR;
01004    c->readformat = AST_FORMAT_SLINEAR;
01005    c->writeformat = AST_FORMAT_SLINEAR;
01006    c->tech_pvt = o;
01007 
01008    if (!ast_strlen_zero(o->language))
01009       ast_string_field_set(c, language, o->language);
01010    /* Don't use ast_set_callerid() here because it will
01011     * generate a needless NewCallerID event */
01012    c->cid.cid_ani = ast_strdup(o->cid_num);
01013    if (!ast_strlen_zero(ext))
01014       c->cid.cid_dnid = ast_strdup(ext);
01015 
01016    o->owner = c;
01017    ast_module_ref(ast_module_info->self);
01018    ast_jb_configure(c, &global_jbconf);
01019    if (state != AST_STATE_DOWN) {
01020       if (ast_pbx_start(c)) {
01021          ast_log(LOG_WARNING, "Unable to start PBX on %s\n", c->name);
01022          ast_hangup(c);
01023          o->owner = c = NULL;
01024          /* XXX what about the channel itself ? */
01025          /* XXX what about usecnt ? */
01026       }
01027    }
01028 
01029    return c;
01030 }

static struct ast_frame * oss_read ( struct ast_channel chan  )  [static]

Definition at line 892 of file chan_oss.c.

References ast_channel::_state, AST_FORMAT_SLINEAR, AST_FRAME_NULL, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, AST_STATE_UP, chan_oss_pvt::boost, BOOST_SCALE, f, FRAME_SIZE, chan_oss_pvt::mute, chan_oss_pvt::oss_read_buf, oss_tech, chan_oss_pvt::read_f, chan_oss_pvt::readpos, chan_oss_pvt::sounddev, ast_channel::tech_pvt, and ast_channel_tech::type.

00893 {
00894    int res;
00895    struct chan_oss_pvt *o = c->tech_pvt;
00896    struct ast_frame *f = &o->read_f;
00897 
00898    /* XXX can be simplified returning &ast_null_frame */
00899    /* prepare a NULL frame in case we don't have enough data to return */
00900    bzero(f, sizeof(struct ast_frame));
00901    f->frametype = AST_FRAME_NULL;
00902    f->src = oss_tech.type;
00903 
00904    res = read(o->sounddev, o->oss_read_buf + o->readpos, sizeof(o->oss_read_buf) - o->readpos);
00905    if (res < 0)            /* audio data not ready, return a NULL frame */
00906       return f;
00907 
00908    o->readpos += res;
00909    if (o->readpos < sizeof(o->oss_read_buf)) /* not enough samples */
00910       return f;
00911 
00912    if (o->mute)
00913       return f;
00914 
00915    o->readpos = AST_FRIENDLY_OFFSET;   /* reset read pointer for next frame */
00916    if (c->_state != AST_STATE_UP)   /* drop data if frame is not up */
00917       return f;
00918    /* ok we can build and deliver the frame to the caller */
00919    f->frametype = AST_FRAME_VOICE;
00920    f->subclass = AST_FORMAT_SLINEAR;
00921    f->samples = FRAME_SIZE;
00922    f->datalen = FRAME_SIZE * 2;
00923    f->data = o->oss_read_buf + AST_FRIENDLY_OFFSET;
00924    if (o->boost != BOOST_SCALE) {   /* scale and clip values */
00925       int i, x;
00926       int16_t *p = (int16_t *) f->data;
00927       for (i = 0; i < f->samples; i++) {
00928          x = (p[i] * o->boost) / BOOST_SCALE;
00929          if (x > 32767)
00930             x = 32767;
00931          else if (x < -32768)
00932             x = -32768;
00933          p[i] = x;
00934       }
00935    }
00936 
00937    f->offset = AST_FRIENDLY_OFFSET;
00938    return f;
00939 }

static struct ast_channel * oss_request ( const char *  type,
int  format,
void *  data,
int *  cause 
) [static]

Definition at line 1032 of file chan_oss.c.

References AST_CAUSE_BUSY, AST_FORMAT_SLINEAR, ast_log(), AST_STATE_DOWN, find_desc(), LOG_NOTICE, LOG_WARNING, oss_new(), and chan_oss_pvt::owner.

01033 {
01034    struct ast_channel *c;
01035    struct chan_oss_pvt *o = find_desc(data);
01036 
01037    ast_log(LOG_WARNING, "oss_request ty <%s> data 0x%p <%s>\n", type, data, (char *) data);
01038    if (o == NULL) {
01039       ast_log(LOG_NOTICE, "Device %s not found\n", (char *) data);
01040       /* XXX we could default to 'dsp' perhaps ? */
01041       return NULL;
01042    }
01043    if ((format & AST_FORMAT_SLINEAR) == 0) {
01044       ast_log(LOG_NOTICE, "Format 0x%x unsupported\n", format);
01045       return NULL;
01046    }
01047    if (o->owner) {
01048       ast_log(LOG_NOTICE, "Already have a call (chan %p) on the OSS channel\n", o->owner);
01049       *cause = AST_CAUSE_BUSY;
01050       return NULL;
01051    }
01052    c = oss_new(o, NULL, NULL, AST_STATE_DOWN);
01053    if (c == NULL) {
01054       ast_log(LOG_WARNING, "Unable to create new OSS channel\n");
01055       return NULL;
01056    }
01057    return c;
01058 }

static int oss_text ( struct ast_channel c,
const char *  text 
) [static]

Definition at line 776 of file chan_oss.c.

References ast_verbose().

00777 {
00778    /* print received messages */
00779    ast_verbose(" << Console Received text %s >> \n", text);
00780    return 0;
00781 }

static int oss_write ( struct ast_channel chan,
struct ast_frame f 
) [static]

Definition at line 856 of file chan_oss.c.

References chan_oss_pvt::cursound, f, chan_oss_pvt::nosound, chan_oss_pvt::oss_write_buf, chan_oss_pvt::oss_write_dst, soundcard_writeframe(), and ast_channel::tech_pvt.

00857 {
00858    int src;
00859    struct chan_oss_pvt *o = c->tech_pvt;
00860 
00861    /* Immediately return if no sound is enabled */
00862    if (o->nosound)
00863       return 0;
00864    /* Stop any currently playing sound */
00865    o->cursound = -1;
00866    /*
00867     * we could receive a block which is not a multiple of our
00868     * FRAME_SIZE, so buffer it locally and write to the device
00869     * in FRAME_SIZE chunks.
00870     * Keep the residue stored for future use.
00871     */
00872    src = 0;             /* read position into f->data */
00873    while (src < f->datalen) {
00874       /* Compute spare room in the buffer */
00875       int l = sizeof(o->oss_write_buf) - o->oss_write_dst;
00876 
00877       if (f->datalen - src >= l) {  /* enough to fill a frame */
00878          memcpy(o->oss_write_buf + o->oss_write_dst, f->data + src, l);
00879          soundcard_writeframe(o, (short *) o->oss_write_buf);
00880          src += l;
00881          o->oss_write_dst = 0;
00882       } else {          /* copy residue */
00883          l = f->datalen - src;
00884          memcpy(o->oss_write_buf + o->oss_write_dst, f->data + src, l);
00885          src += l;         /* but really, we are done */
00886          o->oss_write_dst += l;
00887       }
00888    }
00889    return 0;
00890 }

static void ring ( struct chan_oss_pvt o,
int  x 
) [static]

Definition at line 784 of file chan_oss.c.

References chan_oss_pvt::sndcmd.

Referenced by ast_extension_state2(), console_answer(), console_answer_deprecated(), ind_load_module(), oss_answer(), oss_call(), oss_hangup(), and oss_indicate().

00785 {
00786    write(o->sndcmd[1], &x, sizeof(x));
00787 }

static void send_sound ( struct chan_oss_pvt o  )  [static]

Definition at line 546 of file chan_oss.c.

References ast_log(), chan_oss_pvt::cursound, FRAME_SIZE, LOG_WARNING, chan_oss_pvt::nosound, s, chan_oss_pvt::sampsent, silence, soundcard_writeframe(), and sounds.

00547 {
00548    short myframe[FRAME_SIZE];
00549    int ofs, l, start;
00550    int l_sampsent = o->sampsent;
00551    struct sound *s;
00552 
00553    if (o->cursound < 0)    /* no sound to send */
00554       return;
00555 
00556    s = &sounds[o->cursound];
00557 
00558    for (ofs = 0; ofs < FRAME_SIZE; ofs += l) {
00559       l = s->samplen - l_sampsent;  /* # of available samples */
00560       if (l > 0) {
00561          start = l_sampsent % s->datalen; /* source offset */
00562          if (l > FRAME_SIZE - ofs)  /* don't overflow the frame */
00563             l = FRAME_SIZE - ofs;
00564          if (l > s->datalen - start)   /* don't overflow the source */
00565             l = s->datalen - start;
00566          bcopy(s->data + start, myframe + ofs, l * 2);
00567          if (0)
00568             ast_log(LOG_WARNING, "send_sound sound %d/%d of %d into %d\n", l_sampsent, l, s->samplen, ofs);
00569          l_sampsent += l;
00570       } else {          /* end of samples, maybe some silence */
00571          static const short silence[FRAME_SIZE] = { 0, };
00572 
00573          l += s->silencelen;
00574          if (l > 0) {
00575             if (l > FRAME_SIZE - ofs)
00576                l = FRAME_SIZE - ofs;
00577             bcopy(silence, myframe + ofs, l * 2);
00578             l_sampsent += l;
00579          } else {       /* silence is over, restart sound if loop */
00580             if (s->repeat == 0) {   /* last block */
00581                o->cursound = -1;
00582                o->nosound = 0;   /* allow audio data */
00583                if (ofs < FRAME_SIZE)   /* pad with silence */
00584                   bcopy(silence, myframe + ofs, (FRAME_SIZE - ofs) * 2);
00585             }
00586             l_sampsent = 0;
00587          }
00588       }
00589    }
00590    l = soundcard_writeframe(o, myframe);
00591    if (l > 0)
00592       o->sampsent = l_sampsent;  /* update status */
00593 }

static int setformat ( struct chan_oss_pvt o,
int  mode 
) [static]

Definition at line 665 of file chan_oss.c.

References ast_log(), ast_verbose(), DEFAULT_SAMPLE_RATE, chan_oss_pvt::device, chan_oss_pvt::duplex, errno, ast_channel::fds, fmt, chan_oss_pvt::frags, chan_oss_pvt::lastopen, LOG_WARNING, chan_oss_pvt::M_FULL, chan_oss_pvt::M_READ, chan_oss_pvt::M_UNSET, chan_oss_pvt::M_WRITE, O_CLOSE, option_verbose, chan_oss_pvt::owner, chan_oss_pvt::sounddev, VERBOSE_PREFIX_2, WARN_frag, WARN_speed, and chan_oss_pvt::warned.

Referenced by console_hangup(), console_hangup_deprecated(), oss_hangup(), oss_new(), sound_thread(), and soundcard_writeframe().

00666 {
00667    int fmt, desired, res, fd;
00668 
00669    if (o->sounddev >= 0) {
00670       ioctl(o->sounddev, SNDCTL_DSP_RESET, 0);
00671       close(o->sounddev);
00672       o->duplex = M_UNSET;
00673       o->sounddev = -1;
00674    }
00675    if (mode == O_CLOSE)    /* we are done */
00676       return 0;
00677    if (ast_tvdiff_ms(ast_tvnow(), o->lastopen) < 1000)
00678       return -1;           /* don't open too often */
00679    o->lastopen = ast_tvnow();
00680    fd = o->sounddev = open(o->device, mode | O_NONBLOCK);
00681    if (fd < 0) {
00682       ast_log(LOG_WARNING, "Unable to re-open DSP device %s: %s\n", o->device, strerror(errno));
00683       return -1;
00684    }
00685    if (o->owner)
00686       o->owner->fds[0] = fd;
00687 
00688 #if __BYTE_ORDER == __LITTLE_ENDIAN
00689    fmt = AFMT_S16_LE;
00690 #else
00691    fmt = AFMT_S16_BE;
00692 #endif
00693    res = ioctl(fd, SNDCTL_DSP_SETFMT, &fmt);
00694    if (res < 0) {
00695       ast_log(LOG_WARNING, "Unable to set format to 16-bit signed\n");
00696       return -1;
00697    }
00698    switch (mode) {
00699       case O_RDWR:
00700          res = ioctl(fd, SNDCTL_DSP_SETDUPLEX, 0);
00701          /* Check to see if duplex set (FreeBSD Bug) */
00702          res = ioctl(fd, SNDCTL_DSP_GETCAPS, &fmt);
00703          if (res == 0 && (fmt & DSP_CAP_DUPLEX)) {
00704             if (option_verbose > 1)
00705                ast_verbose(VERBOSE_PREFIX_2 "Console is full duplex\n");
00706             o->duplex = M_FULL;
00707          };
00708          break;
00709       case O_WRONLY:
00710          o->duplex = M_WRITE;
00711          break;
00712       case O_RDONLY:
00713          o->duplex = M_READ;
00714          break;
00715    }
00716 
00717    fmt = 0;
00718    res = ioctl(fd, SNDCTL_DSP_STEREO, &fmt);
00719    if (res < 0) {
00720       ast_log(LOG_WARNING, "Failed to set audio device to mono\n");
00721       return -1;
00722    }
00723    fmt = desired = DEFAULT_SAMPLE_RATE;   /* 8000 Hz desired */
00724    res = ioctl(fd, SNDCTL_DSP_SPEED, &fmt);
00725 
00726    if (res < 0) {
00727       ast_log(LOG_WARNING, "Failed to set audio device to mono\n");
00728       return -1;
00729    }
00730    if (fmt != desired) {
00731       if (!(o->warned & WARN_speed)) {
00732          ast_log(LOG_WARNING,
00733              "Requested %d Hz, got %d Hz -- sound may be choppy\n",
00734              desired, fmt);
00735          o->warned |= WARN_speed;
00736       }
00737    }
00738    /*
00739     * on Freebsd, SETFRAGMENT does not work very well on some cards.
00740     * Default to use 256 bytes, let the user override
00741     */
00742    if (o->frags) {
00743       fmt = o->frags;
00744       res = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &fmt);
00745       if (res < 0) {
00746          if (!(o->warned & WARN_frag)) {
00747             ast_log(LOG_WARNING,
00748                "Unable to set fragment size -- sound may be choppy\n");
00749             o->warned |= WARN_frag;
00750          }
00751       }
00752    }
00753    /* on some cards, we need SNDCTL_DSP_SETTRIGGER to start outputting */
00754    res = PCM_ENABLE_INPUT | PCM_ENABLE_OUTPUT;
00755    res = ioctl(fd, SNDCTL_DSP_SETTRIGGER, &res);
00756    /* it may fail if we are in half duplex, never mind */
00757    return 0;
00758 }

static void* sound_thread ( void *  arg  )  [static]

Definition at line 595 of file chan_oss.c.

References ast_log(), ast_select(), chan_oss_pvt::cursound, errno, sound::ind, LOG_WARNING, MAX, O_CLOSE, chan_oss_pvt::owner, send_sound(), setformat(), chan_oss_pvt::sndcmd, chan_oss_pvt::sounddev, and sounds.

00596 {
00597    char ign[4096];
00598    struct chan_oss_pvt *o = (struct chan_oss_pvt *) arg;
00599 
00600    /*
00601     * Just in case, kick the driver by trying to read from it.
00602     * Ignore errors - this read is almost guaranteed to fail.
00603     */
00604    read(o->sounddev, ign, sizeof(ign));
00605    for (;;) {
00606       fd_set rfds, wfds;
00607       int maxfd, res;
00608 
00609       FD_ZERO(&rfds);
00610       FD_ZERO(&wfds);
00611       FD_SET(o->sndcmd[0], &rfds);
00612       maxfd = o->sndcmd[0];   /* pipe from the main process */
00613       if (o->cursound > -1 && o->sounddev < 0)
00614          setformat(o, O_RDWR);   /* need the channel, try to reopen */
00615       else if (o->cursound == -1 && o->owner == NULL)
00616          setformat(o, O_CLOSE);  /* can close */
00617       if (o->sounddev > -1) {
00618          if (!o->owner) {  /* no one owns the audio, so we must drain it */
00619             FD_SET(o->sounddev, &rfds);
00620             maxfd = MAX(o->sounddev, maxfd);
00621          }
00622          if (o->cursound > -1) {
00623             FD_SET(o->sounddev, &wfds);
00624             maxfd = MAX(o->sounddev, maxfd);
00625          }
00626       }
00627       /* ast_select emulates linux behaviour in terms of timeout handling */
00628       res = ast_select(maxfd + 1, &rfds, &wfds, NULL, NULL);
00629       if (res < 1) {
00630          ast_log(LOG_WARNING, "select failed: %s\n", strerror(errno));
00631          sleep(1);
00632          continue;
00633       }
00634       if (FD_ISSET(o->sndcmd[0], &rfds)) {
00635          /* read which sound to play from the pipe */
00636          int i, what = -1;
00637 
00638          read(o->sndcmd[0], &what, sizeof(what));
00639          for (i = 0; sounds[i].ind != -1; i++) {
00640             if (sounds[i].ind == what) {
00641                o->cursound = i;
00642                o->sampsent = 0;
00643                o->nosound = 1;   /* block audio from pbx */
00644                break;
00645             }
00646          }
00647          if (sounds[i].ind == -1)
00648             ast_log(LOG_WARNING, "invalid sound index: %d\n", what);
00649       }
00650       if (o->sounddev > -1) {
00651          if (FD_ISSET(o->sounddev, &rfds))   /* read and ignore errors */
00652             read(o->sounddev, ign, sizeof(ign));
00653          if (FD_ISSET(o->sounddev, &wfds))
00654             send_sound(o);
00655       }
00656    }
00657    return NULL;            /* Never reached */
00658 }

static int soundcard_writeframe ( struct chan_oss_pvt o,
short *  data 
) [static]

Definition at line 512 of file chan_oss.c.

References ast_log(), FRAME_SIZE, LOG_WARNING, chan_oss_pvt::queuesize, setformat(), chan_oss_pvt::sounddev, used_blocks(), and chan_oss_pvt::w_errors.

Referenced by oss_write(), and send_sound().

00513 {
00514    int res;
00515 
00516    if (o->sounddev < 0)
00517       setformat(o, O_RDWR);
00518    if (o->sounddev < 0)
00519       return 0;            /* not fatal */
00520    /*
00521     * Nothing complex to manage the audio device queue.
00522     * If the buffer is full just drop the extra, otherwise write.
00523     * XXX in some cases it might be useful to write anyways after
00524     * a number of failures, to restart the output chain.
00525     */
00526    res = used_blocks(o);
00527    if (res > o->queuesize) {  /* no room to write a block */
00528       if (o->w_errors++ == 0 && (oss_debug & 0x4))
00529          ast_log(LOG_WARNING, "write: used %d blocks (%d)\n", res, o->w_errors);
00530       return 0;
00531    }
00532    o->w_errors = 0;
00533    return write(o->sounddev, ((void *) data), FRAME_SIZE * 2);
00534 }

static void store_boost ( struct chan_oss_pvt o,
char *  s 
) [static]

Definition at line 1571 of file chan_oss.c.

References ast_log(), chan_oss_pvt::boost, BOOST_MAX, BOOST_SCALE, and LOG_WARNING.

Referenced by do_boost(), and store_config().

01572 {
01573    double boost = 0;
01574    if (sscanf(s, "%lf", &boost) != 1) {
01575       ast_log(LOG_WARNING, "invalid boost <%s>\n", s);
01576       return;
01577    }
01578    if (boost < -BOOST_MAX) {
01579       ast_log(LOG_WARNING, "boost %s too small, using %d\n", s, -BOOST_MAX);
01580       boost = -BOOST_MAX;
01581    } else if (boost > BOOST_MAX) {
01582       ast_log(LOG_WARNING, "boost %s too large, using %d\n", s, BOOST_MAX);
01583       boost = BOOST_MAX;
01584    }
01585    boost = exp(log(10) * boost / 20) * BOOST_SCALE;
01586    o->boost = boost;
01587    ast_log(LOG_WARNING, "setting boost %s to %d\n", s, o->boost);
01588 }

static void store_callerid ( struct chan_oss_pvt o,
char *  s 
) [static]

Definition at line 1726 of file chan_oss.c.

References ast_callerid_split(), chan_oss_pvt::cid_name, and chan_oss_pvt::cid_num.

Referenced by store_config().

01727 {
01728    ast_callerid_split(s, o->cid_name, sizeof(o->cid_name), o->cid_num, sizeof(o->cid_num));
01729 }

static struct chan_oss_pvt* store_config ( struct ast_config cfg,
char *  ctg 
) [static]

Definition at line 1734 of file chan_oss.c.

References asprintf, ast_calloc, ast_jb_read_conf(), ast_log(), ast_strdup, ast_strlen_zero(), ast_variable_browse(), chan_oss_pvt::autoanswer, chan_oss_pvt::autohangup, chan_oss_pvt::ctx, DEV_DSP, chan_oss_pvt::device, chan_oss_pvt::ext, chan_oss_pvt::frags, free, global_jbconf, chan_oss_pvt::language, chan_oss_pvt::lastopen, LOG_WARNING, M_BOOL, M_END, M_F, M_START, M_STR, M_UINT, chan_oss_pvt::mixer_cmd, chan_oss_pvt::mohinterpret, ast_variable::name, chan_oss_pvt::name, ast_variable::next, oss_active, oss_default, chan_oss_pvt::overridecontext, chan_oss_pvt::queuesize, store_boost(), store_callerid(), store_mixer(), and ast_variable::value.

Referenced by load_module().

01735 {
01736    struct ast_variable *v;
01737    struct chan_oss_pvt *o;
01738 
01739    if (ctg == NULL) {
01740       o = &oss_default;
01741       ctg = "general";
01742    } else {
01743       if (!(o = ast_calloc(1, sizeof(*o))))
01744          return NULL;
01745       *o = oss_default;
01746       /* "general" is also the default thing */
01747       if (strcmp(ctg, "general") == 0) {
01748          o->name = ast_strdup("dsp");
01749          oss_active = o->name;
01750          goto openit;
01751       }
01752       o->name = ast_strdup(ctg);
01753    }
01754 
01755    strcpy(o->mohinterpret, "default");
01756 
01757    o->lastopen = ast_tvnow(); /* don't leave it 0 or tvdiff may wrap */
01758    /* fill other fields from configuration */
01759    for (v = ast_variable_browse(cfg, ctg); v; v = v->next) {
01760       M_START(v->name, v->value);
01761 
01762       /* handle jb conf */
01763       if (!ast_jb_read_conf(&global_jbconf, v->name, v->value))
01764          continue;
01765 
01766       M_BOOL("autoanswer", o->autoanswer)
01767          M_BOOL("autohangup", o->autohangup)
01768          M_BOOL("overridecontext", o->overridecontext)
01769          M_STR("device", o->device)
01770          M_UINT("frags", o->frags)
01771          M_UINT("debug", oss_debug)
01772          M_UINT("queuesize", o->queuesize)
01773          M_STR("context", o->ctx)
01774          M_STR("language", o->language)
01775          M_STR("mohinterpret", o->mohinterpret)
01776          M_STR("extension", o->ext)
01777          M_F("mixer", store_mixer(o, v->value))
01778          M_F("callerid", store_callerid(o, v->value))
01779          M_F("boost", store_boost(o, v->value))
01780          M_END(;
01781          );
01782    }
01783    if (ast_strlen_zero(o->device))
01784       ast_copy_string(o->device, DEV_DSP, sizeof(o->device));
01785    if (o->mixer_cmd) {
01786       char *cmd;
01787 
01788       asprintf(&cmd, "mixer %s", o->mixer_cmd);
01789       ast_log(LOG_WARNING, "running [%s]\n", cmd);
01790       system(cmd);
01791       free(cmd);
01792    }
01793    if (o == &oss_default)     /* we are done with the default */
01794       return NULL;
01795 
01796   openit:
01797 #if TRYOPEN
01798    if (setformat(o, O_RDWR) < 0) {  /* open device */
01799       if (option_verbose > 0) {
01800          ast_verbose(VERBOSE_PREFIX_2 "Device %s not detected\n", ctg);
01801          ast_verbose(VERBOSE_PREFIX_2 "Turn off OSS support by adding " "'noload=chan_oss.so' in /etc/asterisk/modules.conf\n");
01802       }
01803       goto error;
01804    }
01805    if (o->duplex != M_FULL)
01806       ast_log(LOG_WARNING, "XXX I don't work right with non " "full-duplex sound cards XXX\n");
01807 #endif /* TRYOPEN */
01808    if (pipe(o->sndcmd) != 0) {
01809       ast_log(LOG_ERROR, "Unable to create pipe\n");
01810       goto error;
01811    }
01812    ast_pthread_create_background(&o->sthread, NULL, sound_thread, o);
01813    /* link into list of devices */
01814    if (o != &oss_default) {
01815       o->next = oss_default.next;
01816       oss_default.next = o;
01817    }
01818    return o;
01819 
01820   error:
01821    if (o != &oss_default)
01822       free(o);
01823    return NULL;
01824 }

static void store_mixer ( struct chan_oss_pvt o,
char *  s 
) [static]

Definition at line 1707 of file chan_oss.c.

References ast_log(), ast_strdup, free, LOG_WARNING, and chan_oss_pvt::mixer_cmd.

Referenced by store_config().

01708 {
01709    int i;
01710 
01711    for (i = 0; i < strlen(s); i++) {
01712       if (!isalnum(s[i]) && index(" \t-/", s[i]) == NULL) {
01713          ast_log(LOG_WARNING, "Suspect char %c in mixer cmd, ignoring:\n\t%s\n", s[i], s);
01714          return;
01715       }
01716    }
01717    if (o->mixer_cmd)
01718       free(o->mixer_cmd);
01719    o->mixer_cmd = ast_strdup(s);
01720    ast_log(LOG_WARNING, "setting mixer %s\n", s);
01721 }

static int unload_module ( void   )  [static]

Definition at line 1864 of file chan_oss.c.

References ast_channel_unregister(), ast_cli_unregister_multiple(), ast_softhangup(), AST_SOFTHANGUP_APPUNLOAD, cli_oss, chan_oss_pvt::next, oss_default, oss_tech, chan_oss_pvt::owner, chan_oss_pvt::sndcmd, and chan_oss_pvt::sounddev.

01865 {
01866    struct chan_oss_pvt *o;
01867 
01868    ast_channel_unregister(&oss_tech);
01869    ast_cli_unregister_multiple(cli_oss, sizeof(cli_oss) / sizeof(struct ast_cli_entry));
01870 
01871    for (o = oss_default.next; o; o = o->next) {
01872       close(o->sounddev);
01873       if (o->sndcmd[0] > 0) {
01874          close(o->sndcmd[0]);
01875          close(o->sndcmd[1]);
01876       }
01877       if (o->owner)
01878          ast_softhangup(o->owner, AST_SOFTHANGUP_APPUNLOAD);
01879       if (o->owner)        /* XXX how ??? */
01880          return -1;
01881       /* XXX what about the thread ? */
01882       /* XXX what about the memory allocated ? */
01883    }
01884    return 0;
01885 }

static int used_blocks ( struct chan_oss_pvt o  )  [static]

Definition at line 490 of file chan_oss.c.

References ast_log(), LOG_WARNING, chan_oss_pvt::sounddev, chan_oss_pvt::total_blocks, WARN_used_blocks, and chan_oss_pvt::warned.

Referenced by soundcard_writeframe().

00491 {
00492    struct audio_buf_info info;
00493 
00494    if (ioctl(o->sounddev, SNDCTL_DSP_GETOSPACE, &info)) {
00495       if (!(o->warned & WARN_used_blocks)) {
00496          ast_log(LOG_WARNING, "Error reading output space\n");
00497          o->warned |= WARN_used_blocks;
00498       }
00499       return 1;
00500    }
00501 
00502    if (o->total_blocks == 0) {
00503       if (0)               /* debugging */
00504          ast_log(LOG_WARNING, "fragtotal %d size %d avail %d\n", info.fragstotal, info.fragsize, info.fragments);
00505       o->total_blocks = info.fragments;
00506    }
00507 
00508    return o->total_blocks - info.fragments;
00509 }


Variable Documentation

char active_usage[] [static]

Initial value:

   "Usage: console active [device]\n"
   "       If used without a parameter, displays which device is the current\n"
   "console.  If a device is specified, the console sound device is changed to\n"
   "the device specified.\n"

Definition at line 1562 of file chan_oss.c.

char answer_usage[] [static]

Initial value:

   "Usage: console answer\n"
   "       Answers an incoming call on the console (OSS) channel.\n"

Definition at line 1174 of file chan_oss.c.

char autoanswer_usage[] [static]

Initial value:

   "Usage: console autoanswer [on|off]\n"
   "       Enables or disables autoanswer feature.  If used without\n"
   "       argument, displays the current on/off status of autoanswer.\n"
   "       The default value of autoanswer is in 'oss.conf'.\n"

Definition at line 1121 of file chan_oss.c.

struct ast_cli_entry cli_oss[] [static]

Definition at line 1656 of file chan_oss.c.

Referenced by load_module(), and unload_module().

struct ast_cli_entry cli_oss_active_deprecated [static]

Initial value:

 {
   { "console", NULL },
   console_active_deprecated, NULL,
        NULL }

Definition at line 1651 of file chan_oss.c.

struct ast_cli_entry cli_oss_answer_deprecated [static]

Initial value:

 {
   { "answer", NULL },
   console_answer_deprecated, NULL,
   NULL }

Definition at line 1601 of file chan_oss.c.

struct ast_cli_entry cli_oss_autoanswer_deprecated [static]

Initial value:

 {
   { "autoanswer", NULL },
   console_autoanswer_deprecated, NULL,
        NULL, autoanswer_complete_deprecated }

Definition at line 1641 of file chan_oss.c.

struct ast_cli_entry cli_oss_boost_deprecated [static]

Initial value:

 {
   { "oss", "boost", NULL },
   do_boost, NULL,
   NULL }

Definition at line 1646 of file chan_oss.c.

struct ast_cli_entry cli_oss_dial_deprecated [static]

Initial value:

 {
   { "dial", NULL },
   console_dial_deprecated, NULL,
        NULL }

Definition at line 1616 of file chan_oss.c.

struct ast_cli_entry cli_oss_flash_deprecated [static]

Initial value:

 {
   { "flash", NULL },
   console_flash_deprecated, NULL,
   NULL }

Definition at line 1611 of file chan_oss.c.

struct ast_cli_entry cli_oss_hangup_deprecated [static]

Initial value:

 {
   { "hangup", NULL },
   console_hangup_deprecated, NULL,
   NULL }

Definition at line 1606 of file chan_oss.c.

struct ast_cli_entry cli_oss_mute_deprecated [static]

Initial value:

 {
   { "mute", NULL },
   console_mute_deprecated, NULL,
        NULL }

Definition at line 1621 of file chan_oss.c.

struct ast_cli_entry cli_oss_send_text_deprecated [static]

Initial value:

 {
   { "send", "text", NULL },
   console_sendtext_deprecated, NULL,
        NULL }

Definition at line 1636 of file chan_oss.c.

struct ast_cli_entry cli_oss_transfer_deprecated [static]

Initial value:

 {
   { "transfer", NULL },
   console_transfer_deprecated, NULL,
        NULL }

Definition at line 1631 of file chan_oss.c.

struct ast_cli_entry cli_oss_unmute_deprecated [static]

Initial value:

 {
   { "unmute", NULL },
   console_unmute_deprecated, NULL,
        NULL }

Definition at line 1626 of file chan_oss.c.

char* config = "oss.conf" [static]

Definition at line 284 of file chan_oss.c.

struct ast_jb_conf default_jbconf [static]

Global jitterbuffer configuration - by default, jb is disabled

Definition at line 86 of file chan_oss.c.

char dial_usage[] [static]

Initial value:

   "Usage: console dial [extension[@context]]\n"
   "       Dials a given extension (and context if specified)\n"

Definition at line 1402 of file chan_oss.c.

char flash_usage[] [static]

Initial value:

   "Usage: console flash\n"
   "       Flashes the call currently placed on the console.\n"

Definition at line 1316 of file chan_oss.c.

struct ast_jb_conf global_jbconf [static]

Definition at line 93 of file chan_oss.c.

char hangup_usage[] [static]

Initial value:

   "Usage: console hangup\n"
   "       Hangs up any call currently placed on the console.\n"

Definition at line 1274 of file chan_oss.c.

char mute_usage[] [static]

Initial value:

   "Usage: console mute\nMutes the microphone\n"

Definition at line 1430 of file chan_oss.c.

char* oss_active [static]

Definition at line 400 of file chan_oss.c.

Referenced by __console_mute_unmute(), console_active(), console_active_deprecated(), console_answer(), console_answer_deprecated(), console_autoanswer(), console_autoanswer_deprecated(), console_dial(), console_dial_deprecated(), console_flash(), console_flash_deprecated(), console_hangup(), console_hangup_deprecated(), console_sendtext(), console_sendtext_deprecated(), console_transfer(), console_transfer_deprecated(), do_boost(), load_module(), and store_config().

int oss_debug [static]

Definition at line 286 of file chan_oss.c.

struct chan_oss_pvt oss_default [static]

Definition at line 385 of file chan_oss.c.

Referenced by console_active(), console_active_deprecated(), find_desc(), store_config(), and unload_module().

struct ast_channel_tech oss_tech [static]

Definition at line 418 of file chan_oss.c.

Referenced by load_module(), oss_new(), oss_read(), and unload_module().

char sendtext_usage[] [static]

Initial value:

   "Usage: console send text <message>\n"
   "       Sends a text message for display on the remote terminal.\n"

Definition at line 1232 of file chan_oss.c.

struct sound sounds[] [static]

Definition at line 303 of file chan_oss.c.

char tdesc[] = "OSS Console Channel Driver" [static]

Definition at line 416 of file chan_oss.c.

char transfer_usage[] [static]

Initial value:

   "Usage: console transfer <extension>[@context]\n"
   "       Transfers the currently connected call to the given extension (and\n"
   "context if specified)\n"

Definition at line 1513 of file chan_oss.c.

char unmute_usage[] [static]

Initial value:

   "Usage: console unmute\nUnmutes the microphone\n"

Definition at line 1449 of file chan_oss.c.


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