[asterisk-commits] trunk r9449 - /trunk/channels/chan_oss.c
asterisk-commits at lists.digium.com
asterisk-commits at lists.digium.com
Fri Feb 10 16:19:06 MST 2006
Author: mattf
Date: Fri Feb 10 17:19:05 2006
New Revision: 9449
URL: http://svn.digium.com/view/asterisk?rev=9449&view=rev
Log:
Add boost gain option to microphone, also minor bug fixes (#6388)
Modified:
trunk/channels/chan_oss.c
Modified: trunk/channels/chan_oss.c
URL: http://svn.digium.com/view/asterisk/trunk/channels/chan_oss.c?rev=9449&r1=9448&r2=9449&view=diff
==============================================================================
--- trunk/channels/chan_oss.c (original)
+++ trunk/channels/chan_oss.c Fri Feb 10 17:19:05 2006
@@ -34,6 +34,7 @@
#include <stdio.h>
#include <ctype.h> /* for isalnum */
+#include <math.h> /* exp and log */
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
@@ -90,6 +91,7 @@
* where 'foo' is the name of the card you want.
*
* oss.conf parameters are
+START_CONFIG
[general]
; general config options, default values are shown
@@ -109,6 +111,9 @@
; mixer="-f /dev/mixer0 pcm 80 ; mixer command to run on start
; queuesize=10 ; frames in device driver
; frags=8 ; argument to SETFRAGMENT
+; boost = n ; mic volume boost in dB
+
+END_CONFIG
.. and so on for the other cards.
@@ -280,6 +285,13 @@
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 device[64]; /* device to open */
pthread_t sthread;
@@ -314,6 +326,7 @@
.ctx = "default",
.readpos = AST_FRIENDLY_OFFSET, /* start here on reads */
.lastopen = { 0, 0 },
+ .boost = BOOST_SCALE,
};
static char *oss_active; /* the active device */
@@ -354,11 +367,13 @@
static struct chan_oss_pvt *find_desc(char *dev)
{
struct chan_oss_pvt *o;
-
- for (o = oss_default.next; o && strcmp(o->name, dev) != 0; o = o->next)
+ if (dev == NULL)
+ ast_log(LOG_WARNING, "null dev\n");
+
+ for (o = oss_default.next; o && o->name && dev && strcmp(o->name, dev) != 0; o = o->next)
;
if (o == NULL)
- ast_log(LOG_WARNING, "could not find <%s>\n", dev);
+ ast_log(LOG_WARNING, "could not find <%s>\n", dev ? dev : "--no-device--");
return o;
}
@@ -698,8 +713,8 @@
struct chan_oss_pvt *o = c->tech_pvt;
struct ast_frame f = { 0, };
- ast_verbose(" << Call to '%s' on console from <%s><%s><%s> >>\n",
- dest, c->cid.cid_dnid, c->cid.cid_num, c->cid.cid_name);
+ 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);
if (o->autoanswer) {
ast_verbose( " << Auto-answered >> \n" );
f.frametype = AST_FRAME_CONTROL;
@@ -803,6 +818,7 @@
struct chan_oss_pvt *o = c->tech_pvt;
struct ast_frame *f = &o->read_f;
+ /* XXX can be simplified returning &ast_null_frame */
/* prepare a NULL frame in case we don't have enough data to return */
bzero(f, sizeof(struct ast_frame));
f->frametype = AST_FRAME_NULL;
@@ -829,6 +845,19 @@
f->samples = FRAME_SIZE;
f->datalen = FRAME_SIZE * 2;
f->data = o->oss_read_buf + AST_FRIENDLY_OFFSET;
+ if (o->boost != BOOST_SCALE) { /* scale and clip values */
+ int i, x;
+ int16_t *p = (int16_t *)f->data;
+ 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;
return f;
}
@@ -884,6 +913,8 @@
return NULL;
c->tech = &oss_tech;
ast_string_field_build(c, name, "OSS/%s", o->device + 5);
+ if (o->sounddev < 0)
+ setformat(o, O_RDWR);
c->fds[0] = o->sounddev; /* -1 if device closed, override later */
c->nativeformats = AST_FORMAT_SLINEAR;
c->readformat = AST_FORMAT_SLINEAR;
@@ -900,6 +931,8 @@
c->cid.cid_num = ast_strdup(o->cid_num);
if (!ast_strlen_zero(o->cid_name))
c->cid.cid_name = ast_strdup(o->cid_name);
+ if (!ast_strlen_zero(ext))
+ c->cid.cid_dnid = strdup(ext);
o->owner = c;
ast_setstate(c, state);
@@ -1026,14 +1059,13 @@
" Sends a text message for display on the remote terminal.\n";
/*
- * concatenate all arguments into a single string
+ * concatenate all arguments into a single string. argv is NULL-terminated
+ * so we can use it right away
*/
static int console_sendtext(int fd, int argc, char *argv[])
{
struct chan_oss_pvt *o = find_desc(oss_active);
- int tmparg = 2;
- char text2send[TEXT_SIZE] = "";
- struct ast_frame f = { 0, };
+ char buf[TEXT_SIZE];
if (argc < 2)
return RESULT_SHOWUSAGE;
@@ -1041,18 +1073,15 @@
ast_cli(fd, "Not in a call\n");
return RESULT_FAILURE;
}
- while (tmparg < argc) {
- strncat(text2send, argv[tmparg++],
- sizeof(text2send) - strlen(text2send) - 1);
- strncat(text2send, " ",
- sizeof(text2send) - strlen(text2send) - 1);
- }
- if (!ast_strlen_zero(text2send)) {
- text2send[strlen(text2send) - 1] = '\n';
+ ast_join(buf, sizeof(buf) - 1, argv+2);
+ if (!ast_strlen_zero(buf)) {
+ struct ast_frame f = { 0, };
+ int i = strlen(buf);
+ buf[i] = '\n';
f.frametype = AST_FRAME_TEXT;
f.subclass = 0;
- f.data = text2send;
- f.datalen = strlen(text2send);
+ f.data = buf;
+ f.datalen = i + 1;
ast_queue_frame(o->owner, &f);
}
return RESULT_SUCCESS;
@@ -1247,6 +1276,42 @@
return RESULT_SUCCESS;
}
+/*
+ * store the boost factor
+ */
+static void store_boost(struct chan_oss_pvt *o, char *s)
+{
+ double boost = 0;
+ if (sscanf(s, "%lf", &boost) != 1) {
+ ast_log(LOG_WARNING, "invalid boost <%s>\n", s);
+ return;
+ }
+ if (boost < - BOOST_MAX) {
+ ast_log(LOG_WARNING, "boost %s too small, using %d\n",
+ s, -BOOST_MAX);
+ boost = -BOOST_MAX;
+ } else if (boost > BOOST_MAX) {
+ ast_log(LOG_WARNING, "boost %s too large, using %d\n",
+ s, BOOST_MAX);
+ boost = BOOST_MAX;
+ }
+ boost = exp(log(10)*boost/20) * BOOST_SCALE;
+ o->boost = boost;
+ ast_log(LOG_WARNING, "setting boost %s to %d\n", s, o->boost);
+}
+
+static int do_boost(int fd, int argc, char *argv[])
+{
+ struct chan_oss_pvt *o = find_desc(oss_active);
+
+ if (argc == 2)
+ ast_cli(fd, "boost currently %5.1f\n",
+ 20 * log10(((double)o->boost/(double)BOOST_SCALE)) );
+ else if (argc == 3)
+ store_boost(o, argv[2]);
+ return RESULT_SUCCESS;
+}
+
static struct ast_cli_entry myclis[] = {
{ { "answer", NULL }, console_answer, "Answer an incoming console call", answer_usage },
{ { "hangup", NULL }, console_hangup, "Hangup a call on the console", hangup_usage },
@@ -1257,6 +1322,7 @@
{ { "transfer", NULL }, console_transfer, "Transfer a call to a different extension", transfer_usage },
{ { "send", "text", NULL }, console_sendtext, "Send text to the remote device", sendtext_usage },
{ { "autoanswer", NULL }, console_autoanswer, "Sets/displays autoanswer", autoanswer_usage, autoanswer_complete },
+ { { "oss", "boost", NULL }, do_boost, "Sets/displays mic boost in dB"},
{ { "console", NULL }, console_active, "Sets/displays active console", console_usage },
};
@@ -1331,6 +1397,7 @@
M_STR("extension", o->ext)
M_F("mixer", store_mixer(o, v->value))
M_F("callerid", store_callerid(o, v->value))
+ M_F("boost", store_boost(o, v->value))
M_END(;);
}
if (ast_strlen_zero(o->device))
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