/*
* Asterisk -- An open source telephony toolkit.
*
- * Zaptel native transcoding support
+ * DAHDI native transcoding support
*
- * Copyright (C) 1999 - 2006, Digium, Inc.
+ * Copyright (C) 1999 - 2008, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
* Kevin P. Fleming <kpfleming@digium.com>
/*! \file
*
- * \brief Translate between various formats natively through Zaptel transcoding
+ * \brief Translate between various formats natively through DAHDI transcoding
*
* \ingroup codecs
*/
#include <sys/ioctl.h>
#include <errno.h>
#include <sys/mman.h>
+#include <dahdi/user.h>
#include "asterisk/lock.h"
#include "asterisk/translate.h"
#include "asterisk/utils.h"
#include "asterisk/linkedlists.h"
-#include "asterisk/dahdi_compat.h"
-
#define BUFFER_SAMPLES 8000
static unsigned int global_useplc = 0;
static char show_transcoder_usage[] =
"Usage: show transcoder\n"
-" Displays channel utilization of Zaptel transcoder(s).\n";
+" Displays channel utilization of DAHDI transcoder(s).\n";
static char transcoder_show_usage[] =
"Usage: transcoder show\n"
-" Displays channel utilization of Zaptel transcoder(s).\n";
+" Displays channel utilization of DAHDI transcoder(s).\n";
static int transcoder_show(int fd, int argc, char **argv);
static struct ast_cli_entry cli_deprecated[] = {
{ { "show", "transcoder", NULL },
transcoder_show,
- "Display Zaptel transcoder utilization.",
+ "Display DAHDI transcoder utilization.",
show_transcoder_usage}
};
static struct ast_cli_entry cli[] = {
{ { "transcoder", "show", NULL },
transcoder_show,
- "Display Zaptel transcoder utilization.",
+ "Display DAHDI transcoder utilization.",
transcoder_show_usage, NULL,
&cli_deprecated[0]}
};
int totalms;
int lasttotalms;
#endif
- struct dahdi_transcode_header *hdr;
+ struct dahdi_transcoder_formats fmts;
};
static int transcoder_show(int fd, int argc, char **argv)
copy = channels;
if (copy.total == 0)
- ast_cli(fd, "No Zaptel transcoders found.\n");
+ ast_cli(fd, "No DAHDI transcoders found.\n");
else
ast_cli(fd, "%d/%d encoders/decoders of %d channels are in use.\n", copy.encoders, copy.decoders, copy.total);
static int zap_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
{
+ int res;
struct pvt *ztp = pvt->pvt;
- struct dahdi_transcode_header *hdr = ztp->hdr;
- if (!f->subclass) {
+ if (f->subclass) {
+ /* Give the frame to the hardware transcoder... */
+ res = write(ztp->fd, f->data, f->datalen);
+ if (-1 == res) {
+ ast_log(LOG_ERROR, "Failed to write to /dev/dahdi/transcode: %s\n", strerror(errno));
+ }
+ if (f->datalen != res) {
+ ast_log(LOG_ERROR, "Requested write of %d bytes, but only wrote %d bytes.\n", f->datalen, res);
+ }
+ res = -1;
+ pvt->samples += f->samples;
+ } else {
/* Fake a return frame for calculation purposes */
ztp->fake = 2;
pvt->samples = f->samples;
- return 0;
+ res = 0;
}
-
- if (!hdr->srclen)
- /* Copy at front of buffer */
- hdr->srcoffset = 0;
-
- /* if we get handed a G.729 frame that is not a multiple of
- 10 bytes (10 milliseconds), then it has a CNG frame and
- we need to avoid sending that to the transcoder
- */
- if ((f->subclass == AST_FORMAT_G729A) && ((f->datalen % 10) != 0)) {
- if (!ztp->g729b_warning) {
- ast_log(LOG_WARNING, "G.729B CNG frame received but is not supported; dropping.\n");
- ztp->g729b_warning = 1;
- }
- f->datalen -= f->datalen % 10;
- f->samples = f->datalen * 8;
- }
-
- if (hdr->srclen + f->datalen > sizeof(hdr->srcdata)) {
- ast_log(LOG_WARNING, "Out of space for codec translation!\n");
- return -1;
- }
-
- if (hdr->srclen + f->datalen + hdr->srcoffset > sizeof(hdr->srcdata)) {
- /* Very unlikely */
- memmove(hdr->srcdata, hdr->srcdata + hdr->srcoffset, hdr->srclen);
- hdr->srcoffset = 0;
- }
-
- memcpy(hdr->srcdata + hdr->srcoffset + hdr->srclen, f->data, f->datalen);
- hdr->srclen += f->datalen;
- pvt->samples += f->samples;
-
- return -1;
+ return res;
}
static struct ast_frame *zap_frameout(struct ast_trans_pvt *pvt)
{
struct pvt *ztp = pvt->pvt;
- struct dahdi_transcode_header *hdr = ztp->hdr;
- unsigned int x;
- if (ztp->fake == 2) {
+ if (0 == ztp->fake) {
+ int res;
+ /* Let's check to see if there is a new frame for us.... */
+ res = read(ztp->fd, pvt->outbuf + pvt->datalen, pvt->t->buf_size - pvt->datalen);
+ if (-1 == res) {
+ if (EWOULDBLOCK == errno) {
+ /* Nothing waiting... */
+ return NULL;
+ } else {
+ ast_log(LOG_ERROR, "Failed to read from /dev/dahdi/transcode: %s\n", strerror(errno));
+ return NULL;
+ }
+ } else {
+ pvt->f.samples = res;
+ pvt->f.datalen = res;
+ pvt->datalen = 0;
+ pvt->f.frametype = AST_FRAME_VOICE;
+ pvt->f.subclass = 1 << (pvt->t->dstfmt);
+ pvt->f.mallocd = 0;
+ pvt->f.offset = AST_FRIENDLY_OFFSET;
+ pvt->f.src = pvt->t->name;
+ pvt->f.data = pvt->outbuf;
+ ast_set_flag(&pvt->f, AST_FRFLAG_FROM_TRANSLATOR);
+
+ return &pvt->f;
+ }
+
+ } else if (2 == ztp->fake) {
+
ztp->fake = 1;
pvt->f.frametype = AST_FRAME_VOICE;
pvt->f.subclass = 0;
pvt->f.mallocd = 0;
ast_set_flag(&pvt->f, AST_FRFLAG_FROM_TRANSLATOR);
pvt->samples = 0;
- } else if (ztp->fake == 1) {
+
+ return &pvt->f;
+
+ } else if (1 == ztp->fake) {
+
return NULL;
- } else {
- if (hdr->dstlen) {
-#ifdef DEBUG_TRANSCODE
- ztp->totalms += hdr->dstsamples;
- if ((ztp->totalms - ztp->lasttotalms) > 8000) {
- printf("Whee %p, %d (%d to %d)\n", ztp, hdr->dstlen, ztp->lasttotalms, ztp->totalms);
- ztp->lasttotalms = ztp->totalms;
- }
-#endif
- pvt->f.frametype = AST_FRAME_VOICE;
- pvt->f.subclass = hdr->dstfmt;
- pvt->f.samples = hdr->dstsamples;
- pvt->f.data = hdr->dstdata + hdr->dstoffset;
- pvt->f.offset = hdr->dstoffset;
- pvt->f.datalen = hdr->dstlen;
- pvt->f.mallocd = 0;
- ast_set_flag(&pvt->f, AST_FRFLAG_FROM_TRANSLATOR);
- pvt->samples -= pvt->f.samples;
- hdr->dstlen = 0;
-
- } else {
- if (hdr->srclen) {
- hdr->dstoffset = AST_FRIENDLY_OFFSET;
- x = DAHDI_TCOP_TRANSCODE;
- if (ioctl(ztp->fd, DAHDI_TRANSCODE_OP, &x))
- ast_log(LOG_WARNING, "Failed to transcode: %s\n", strerror(errno));
- }
- return NULL;
- }
- }
- return &pvt->f;
+ }
+ /* Shouldn't get here... */
+ return NULL;
}
static void zap_destroy(struct ast_trans_pvt *pvt)
{
struct pvt *ztp = pvt->pvt;
- unsigned int x;
- x = DAHDI_TCOP_RELEASE;
- if (ioctl(ztp->fd, DAHDI_TRANSCODE_OP, &x))
- ast_log(LOG_WARNING, "Failed to release transcoder channel: %s\n", strerror(errno));
-
- switch (ztp->hdr->dstfmt) {
+ switch (ztp->fmts.dstfmt) {
case AST_FORMAT_G729A:
case AST_FORMAT_G723_1:
ast_atomic_fetchadd_int(&channels.encoders, -1);
break;
}
- munmap(ztp->hdr, sizeof(*ztp->hdr));
close(ztp->fd);
}
{
/* Request translation through zap if possible */
int fd;
- unsigned int x = DAHDI_TCOP_ALLOCATE;
struct pvt *ztp = pvt->pvt;
- struct dahdi_transcode_header *hdr;
int flags;
- if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0)
+ if ((fd = open("/dev/dahdi/transcode", O_RDWR)) < 0) {
+ ast_log(LOG_ERROR, "Failed to open /dev/dahdi/transcode: %s\n", strerror(errno));
return -1;
- flags = fcntl(fd, F_GETFL);
- if (flags > - 1) {
- if (fcntl(fd, F_SETFL, flags | O_NONBLOCK))
- ast_log(LOG_WARNING, "Could not set non-block mode!\n");
}
+ ztp->fmts.srcfmt = (1 << source);
+ ztp->fmts.dstfmt = (1 << dest);
- if ((hdr = mmap(NULL, sizeof(*hdr), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) {
- ast_log(LOG_ERROR, "Memory Map failed for transcoding (%s)\n", strerror(errno));
- close(fd);
+ ast_log(LOG_VERBOSE, "Opening transcoder channel from %d to %d.\n", source, dest);
- return -1;
- }
-
- if (hdr->magic != DAHDI_TRANSCODE_MAGIC) {
- ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic);
- munmap(hdr, sizeof(*hdr));
+ if (ioctl(fd, DAHDI_TC_ALLOCATE, &ztp->fmts)) {
+ ast_log(LOG_ERROR, "Unable to attach to transcoder: %s\n", strerror(errno));
close(fd);
return -1;
}
-
- hdr->srcfmt = (1 << source);
- hdr->dstfmt = (1 << dest);
- if (ioctl(fd, DAHDI_TRANSCODE_OP, &x)) {
- ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno));
- munmap(hdr, sizeof(*hdr));
- close(fd);
- return -1;
+ flags = fcntl(fd, F_GETFL);
+ if (flags > - 1) {
+ if (fcntl(fd, F_SETFL, flags | O_NONBLOCK))
+ ast_log(LOG_WARNING, "Could not set non-block mode!\n");
}
- ztp = pvt->pvt;
ztp->fd = fd;
- ztp->hdr = hdr;
- switch (hdr->dstfmt) {
+ switch (ztp->fmts.dstfmt) {
case AST_FORMAT_G729A:
case AST_FORMAT_G723_1:
ast_atomic_fetchadd_int(&channels.encoders, +1);
static int find_transcoders(void)
{
- struct dahdi_transcode_info info = { 0, };
+ struct dahdi_transcoder_info info = { 0, };
struct format_map map = { { { 0 } } };
int fd, res;
unsigned int x, y;
- if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) {
- ast_verbose(VERBOSE_PREFIX_2 "No hardware transcoders found.\n");
+ if ((fd = open("/dev/dahdi/transcode", O_RDWR)) < 0) {
+ ast_log(LOG_ERROR, "Failed to open /dev/dahdi/transcode: %s\n", strerror(errno));
return 0;
}
- info.op = DAHDI_TCOP_GETINFO;
- for (info.tcnum = 0; !(res = ioctl(fd, DAHDI_TRANSCODE_OP, &info)); info.tcnum++) {
+ for (info.tcnum = 0; !(res = ioctl(fd, DAHDI_TC_GETINFO, &info)); info.tcnum++) {
if (option_verbose > 1)
ast_verbose(VERBOSE_PREFIX_2 "Found transcoder '%s'.\n", info.name);
build_translators(&map, info.dstfmts, info.srcfmts);
return 0;
}
-AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Generic Zaptel Transcoder Codec Translator",
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Generic DAHDI Transcoder Codec Translator",
.load = load_module,
.unload = unload_module,
.reload = reload,
projects / thirdparty / asterisk.git / commitdiff
