diff options
Diffstat (limited to 'codecs/codec_alaw.c')
| -rwxr-xr-x | codecs/codec_alaw.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/codecs/codec_alaw.c b/codecs/codec_alaw.c index 6ba4e1da9..6705dff21 100755 --- a/codecs/codec_alaw.c +++ b/codecs/codec_alaw.c @@ -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); |