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Add PLC and jitter buffer and iax2 meta trunk with timestamps (bug #2532, #3400)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5192 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2005-03-17 21:30:19 +00:00
parent 6546acebfb
commit 7082d0584e
22 changed files with 1952 additions and 46 deletions
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48
codecs/codec_alaw.c
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@@ -13,6 +13,8 @@
#include <asterisk/lock.h>
#include <asterisk/logger.h>
#include <asterisk/module.h>
#include <asterisk/config.h>
#include <asterisk/options.h>
#include <asterisk/translate.h>
#include <asterisk/channel.h>
#include <asterisk/alaw.h>
@@ -30,6 +32,8 @@ static int localusecnt = 0;
static char *tdesc = "A-law Coder/Decoder";
static int useplc = 0;
/* Sample frame data (Mu data is okay) */
#include "slin_ulaw_ex.h"
@@ -57,6 +61,7 @@ struct alaw_decoder_pvt
char offset[AST_FRIENDLY_OFFSET]; /* Space to build offset */
short outbuf[BUFFER_SIZE]; /* Decoded signed linear values */
int tail;
plc_state_t plc;
};
/*
@@ -79,6 +84,7 @@ alawtolin_new (void)
{
memset(tmp, 0, sizeof(*tmp));
tmp->tail = 0;
plc_init(&tmp->plc);
localusecnt++;
ast_update_use_count ();
}
@@ -130,6 +136,18 @@ alawtolin_framein (struct ast_translator_pvt *pvt, struct ast_frame *f)
int x;
unsigned char *b;
if(f->datalen == 0) { /* perform PLC with nominal framesize of 20ms/160 samples */
if((tmp->tail + 160) * 2 > sizeof(tmp->outbuf)) {
ast_log(LOG_WARNING, "Out of buffer space\n");
return -1;
}
if(useplc) {
plc_fillin(&tmp->plc, tmp->outbuf+tmp->tail, 160);
tmp->tail += 160;
}
return 0;
}
if ((tmp->tail + f->datalen) * 2 > sizeof(tmp->outbuf)) {
ast_log(LOG_WARNING, "Out of buffer space\n");
return -1;
@@ -140,6 +158,8 @@ alawtolin_framein (struct ast_translator_pvt *pvt, struct ast_frame *f)
for (x=0;x<f->datalen;x++)
tmp->outbuf[tmp->tail + x] = AST_ALAW(b[x]);
if(useplc) plc_rx(&tmp->plc, tmp->outbuf+tmp->tail, f->datalen);
tmp->tail += f->datalen;
return 0;
}
@@ -327,6 +347,33 @@ static struct ast_translator lintoalaw = {
lintoalaw_sample
};
static void
parse_config(void)
{
struct ast_config *cfg;
struct ast_variable *var;
if ((cfg = ast_config_load("codecs.conf"))) {
if ((var = ast_variable_browse(cfg, "plc"))) {
while (var) {
if (!strcasecmp(var->name, "genericplc")) {
useplc = ast_true(var->value) ? 1 : 0;
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "CODEC ULAW: %susing generic PLC\n", useplc ? "" : "not ");
}
var = var->next;
}
}
}
}
int
reload(void)
{
parse_config();
return 0;
}
int
unload_module (void)
{
@@ -345,6 +392,7 @@ int
load_module (void)
{
int res;
parse_config();
res = ast_register_translator (&alawtolin);
if (!res)
res = ast_register_translator (&lintoalaw);