--- /dev/null
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Zaptel native transcoding support
+ *
+ * Copyright (C) 1999 - 2006, Digium, Inc.
+ *
+ * Mark Spencer <markster@digium.com>
+ * Kevin P. Fleming <kpfleming@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ *
+ * \brief Translate between various formats natively through Zaptel transcoding
+ *
+ * \ingroup codecs
+ */
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <zaptel/zaptel.h>
+
+#include "asterisk/lock.h"
+#include "asterisk/translate.h"
+#include "asterisk/config.h"
+#include "asterisk/options.h"
+#include "asterisk/module.h"
+#include "asterisk/cli.h"
+#include "asterisk/logger.h"
+#include "asterisk/channel.h"
+#include "asterisk/utils.h"
+#include "asterisk/linkedlists.h"
+
+#define BUFFER_SAMPLES 8000
+
+static unsigned int global_useplc = 0;
+static int cardsmode = 0;
+
+static int totalchannels = 0;
+static int complexinuse = 0;
+static int simpleinuse = 0;
+static int localusecnt = 0;
+AST_MUTEX_DEFINE_STATIC(channelcount);
+
+static char *tdesc = "Generic Zaptel Transcoder Codec Translator";
+
+static char show_transcoder_usage[] =
+"Usage: show transcoder\n"
+" Displays transcoder utilization.\n";
+
+static int show_transcoder(int fd, int argc, char **argv);
+
+static struct ast_cli_entry transcoder_cli[] = {
+ { { "show", "transcoder", NULL},
+ show_transcoder, "Displays transcoder utilization.",
+ show_transcoder_usage}
+};
+
+struct format_map {
+ unsigned int map[32][32];
+};
+
+static struct format_map global_format_map = { { { 0 } } };
+
+struct translator {
+ struct ast_translator t;
+ AST_LIST_ENTRY(translator) entry;
+};
+
+static AST_LIST_HEAD_STATIC(zap_translators, translator);
+
+struct ast_translator_pvt {
+ int fd;
+ int fake;
+ int inuse;
+ int samples;
+ int dstfmt;
+ int srcfmt;
+#ifdef DEBUG_TRANSCODE
+ int totalms;
+ int lasttotalms;
+#endif
+ struct zt_transcode_header *hdr;
+ struct ast_frame f;
+};
+
+
+static int show_transcoder(int fd, int argc, char **argv)
+{
+ ast_mutex_lock(&channelcount);
+ if (!totalchannels) {
+ ast_cli(fd, "No transcoder card registered\n");
+ ast_mutex_unlock(&channelcount);
+ return RESULT_SUCCESS;
+ }
+ if(!cardsmode)
+ ast_cli(fd, "%d/%d encoders/decoders of %d channels (G.729a / G.723.1 5.3 kbps) are in use.\n",complexinuse, simpleinuse, totalchannels);
+ else if (cardsmode == 1)
+ ast_cli(fd, "%d/%d encoders/decoders of %d channels (G.729a) are in use.\n",complexinuse, simpleinuse, totalchannels);
+ else if (cardsmode == 2)
+ ast_cli(fd, "%d/%d encoders/decoders of %d channels (G.723.1 5.3 kbps) are in use.\n",complexinuse, simpleinuse, totalchannels);
+
+ ast_mutex_unlock(&channelcount);
+ return RESULT_SUCCESS;
+}
+
+static int zap_framein(struct ast_translator_pvt *ztp, struct ast_frame *f)
+{
+ struct zt_transcode_header *hdr = ztp->hdr;
+ if (!f->subclass) {
+ /* Fake a return frame for calculation purposes */
+ ztp->fake = 2;
+ ztp->samples = f->samples;
+ return 0;
+ }
+ if(!ztp->inuse) {
+ ast_mutex_lock(&channelcount);
+ localusecnt++;
+ if(ztp->dstfmt == 8 || ztp->dstfmt == 0 )
+ complexinuse++;
+ else
+ simpleinuse++;
+ ast_mutex_unlock(&channelcount);
+ ztp->inuse = 1;
+ }
+ if (!hdr->srclen)
+ /* Copy at front of buffer */
+ hdr->srcoffset = 0;
+
+ 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;
+ ztp->samples += f->samples;
+
+ return -1;
+}
+
+static struct ast_frame *zap_frameout(struct ast_translator_pvt *ztp)
+{
+ struct zt_transcode_header *hdr = ztp->hdr;
+ unsigned int x;
+
+ if (ztp->fake == 2) {
+ ztp->fake = 1;
+ ztp->f.frametype = AST_FRAME_VOICE;
+ ztp->f.subclass = 0;
+ ztp->f.samples = 240;
+ ztp->f.data = NULL;
+ ztp->f.offset = 0;
+ ztp->f.datalen = 0;
+ ztp->f.mallocd = 0;
+ ztp->samples = 0;
+ } else if (ztp->fake == 1) {
+ return NULL;
+ } else {
+ if (hdr->dstlen) {
+#ifdef DEBUG_TRANSCODE
+ ztp->totalms += hdr->dstsamples;
+ if ((ztp->totalms - ztp->lasttotalms) > 8000) {
+ ast_verbose("Whee %p, %d (%d to %d)\n", ztp, hdr->dstlen, ztp->lasttotalms, ztp->totalms);
+ ztp->lasttotalms = ztp->totalms;
+ }
+#endif
+ ztp->f.frametype = AST_FRAME_VOICE;
+ ztp->f.subclass = hdr->dstfmt;
+ ztp->f.samples = hdr->dstsamples;
+ ztp->f.data = hdr->dstdata + hdr->dstoffset;
+ ztp->f.offset = hdr->dstoffset;
+ ztp->f.datalen = hdr->dstlen;
+ ztp->f.mallocd = 0;
+ ztp->samples -= ztp->f.samples;
+ hdr->dstlen = 0;
+
+ } else {
+ if (hdr->srclen) {
+ hdr->dstoffset = AST_FRIENDLY_OFFSET;
+ x = ZT_TCOP_TRANSCODE;
+ if (ioctl(ztp->fd, ZT_TRANSCODE_OP, &x))
+ ast_log(LOG_WARNING, "Failed to transcode: %s\n", strerror(errno));
+ }
+ return NULL;
+ }
+ }
+
+ return &ztp->f;
+}
+
+static void zap_destroy(struct ast_translator_pvt *ztp)
+{
+ unsigned int x;
+
+ x = ZT_TCOP_RELEASE;
+ if (ioctl(ztp->fd, ZT_TRANSCODE_OP, &x))
+ ast_log(LOG_WARNING, "Failed to release transcoder channel: %s\n", strerror(errno));
+
+ munmap(ztp->hdr, sizeof(*ztp->hdr));
+ if(ztp->inuse) {
+ ast_mutex_lock(&channelcount);
+ localusecnt--;
+ if(ztp->dstfmt == 8 || ztp->dstfmt == 0)
+ complexinuse--;
+ else
+ simpleinuse--;
+ ast_mutex_unlock(&channelcount);
+ }
+ close(ztp->fd);
+}
+
+static struct ast_translator_pvt *zap_new_alawtog723(void)
+{
+ /* Request translation through zap if possible */
+ int fd;
+ unsigned int x = ZT_TCOP_RESET;
+ struct ast_translator_pvt *ztp;
+ struct zt_transcode_header *hdr;
+ int flags;
+
+ ztp = calloc(1,sizeof(struct ast_translator_pvt));
+ if(!ztp) {
+ ast_log(LOG_ERROR, "Could not allocate ztp structure.\n");
+ return NULL;
+ }
+ ztp->dstfmt = 0;
+ ztp->srcfmt = 3;
+
+ if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0)
+ return NULL;
+ 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");
+ }
+
+
+ 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);
+
+ return NULL;
+ }
+
+ if (hdr->magic != ZT_TRANSCODE_MAGIC) {
+ ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic);
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ hdr->srcfmt = (1 << ztp->srcfmt);
+ hdr->dstfmt = (1 << ztp->dstfmt);
+ if (ioctl(fd, ZT_TRANSCODE_OP, &x)) {
+ ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno));
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ ztp->fd = fd;
+ ztp->hdr = hdr;
+
+ return (struct ast_translator_pvt *) ztp;
+}
+
+static struct ast_translator_pvt *zap_new_ulawtog723(void)
+{
+ /* Request translation through zap if possible */
+ int fd;
+ unsigned int x = ZT_TCOP_RESET;
+ struct ast_translator_pvt *ztp;
+ struct zt_transcode_header *hdr;
+ int flags;
+
+ ztp = calloc(1,sizeof(struct ast_translator_pvt));
+ if(!ztp) {
+ ast_log(LOG_ERROR, "Could not allocate ztp structure.\n");
+ return NULL;
+ }
+ ztp->dstfmt = 0;
+ ztp->srcfmt = 2;
+
+ if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0)
+ return NULL;
+ 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");
+ }
+
+
+ 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);
+
+ return NULL;
+ }
+
+ if (hdr->magic != ZT_TRANSCODE_MAGIC) {
+ ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic);
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ hdr->srcfmt = (1 << ztp->srcfmt);
+ hdr->dstfmt = (1 << ztp->dstfmt);
+ if (ioctl(fd, ZT_TRANSCODE_OP, &x)) {
+ ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno));
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ ztp->fd = fd;
+ ztp->hdr = hdr;
+
+ return (struct ast_translator_pvt *) ztp;
+}
+
+static struct ast_translator_pvt *zap_new_g723toalaw(void)
+{
+ /* Request translation through zap if possible */
+ int fd;
+ unsigned int x = ZT_TCOP_RESET;
+ struct ast_translator_pvt *ztp;
+ struct zt_transcode_header *hdr;
+ int flags;
+
+ ztp = calloc(1,sizeof(struct ast_translator_pvt));
+ if(!ztp) {
+ ast_log(LOG_ERROR, "Could not allocate ztp structure.\n");
+ return NULL;
+ }
+ ztp->dstfmt = 3;
+ ztp->srcfmt = 0;
+
+ if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0)
+ return NULL;
+ 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");
+ }
+
+
+ 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);
+
+ return NULL;
+ }
+
+ if (hdr->magic != ZT_TRANSCODE_MAGIC) {
+ ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic);
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ hdr->srcfmt = (1 << ztp->srcfmt);
+ hdr->dstfmt = (1 << ztp->dstfmt);
+ if (ioctl(fd, ZT_TRANSCODE_OP, &x)) {
+ ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno));
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ ztp->fd = fd;
+ ztp->hdr = hdr;
+
+ return (struct ast_translator_pvt *) ztp;
+}
+
+static struct ast_translator_pvt *zap_new_g723toulaw(void)
+{
+ /* Request translation through zap if possible */
+ int fd;
+ unsigned int x = ZT_TCOP_RESET;
+ struct ast_translator_pvt *ztp;
+ struct zt_transcode_header *hdr;
+ int flags;
+
+ ztp = calloc(1,sizeof(struct ast_translator_pvt));
+ if(!ztp) {
+ ast_log(LOG_ERROR, "Could not allocate ztp structure.\n");
+ return NULL;
+ }
+ ztp->dstfmt = 2;
+ ztp->srcfmt = 0;
+
+ if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0)
+ return NULL;
+ 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");
+ }
+
+
+ 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);
+
+ return NULL;
+ }
+
+ if (hdr->magic != ZT_TRANSCODE_MAGIC) {
+ ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic);
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ hdr->srcfmt = (1 << ztp->srcfmt);
+ hdr->dstfmt = (1 << ztp->dstfmt);
+ if (ioctl(fd, ZT_TRANSCODE_OP, &x)) {
+ ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno));
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ ztp->fd = fd;
+ ztp->hdr = hdr;
+
+ return (struct ast_translator_pvt *) ztp;
+}
+
+static struct ast_translator_pvt *zap_new_alawtog729(void)
+{
+ /* Request translation through zap if possible */
+ int fd;
+ unsigned int x = ZT_TCOP_RESET;
+ struct ast_translator_pvt *ztp;
+ struct zt_transcode_header *hdr;
+ int flags;
+
+ ztp = calloc(1,sizeof(struct ast_translator_pvt));
+ if(!ztp) {
+ ast_log(LOG_ERROR, "Could not allocate ztp structure.\n");
+ return NULL;
+ }
+ ztp->dstfmt = 8;
+ ztp->srcfmt = 3;
+
+ if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0)
+ return NULL;
+ 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");
+ }
+
+
+ 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);
+
+ return NULL;
+ }
+
+ if (hdr->magic != ZT_TRANSCODE_MAGIC) {
+ ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic);
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ hdr->srcfmt = (1 << ztp->srcfmt);
+ hdr->dstfmt = (1 << ztp->dstfmt);
+ if (ioctl(fd, ZT_TRANSCODE_OP, &x)) {
+ ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno));
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ ztp->fd = fd;
+ ztp->hdr = hdr;
+
+ return (struct ast_translator_pvt *) ztp;
+}
+
+static struct ast_translator_pvt *zap_new_ulawtog729(void)
+{
+ /* Request translation through zap if possible */
+ int fd;
+ unsigned int x = ZT_TCOP_RESET;
+ struct ast_translator_pvt *ztp;
+ struct zt_transcode_header *hdr;
+ int flags;
+
+ ztp = calloc(1,sizeof(struct ast_translator_pvt));
+ if(!ztp) {
+ ast_log(LOG_ERROR, "Could not allocate ztp structure.\n");
+ return NULL;
+ }
+ ztp->dstfmt = 8;
+ ztp->srcfmt = 2;
+
+ if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0)
+ return NULL;
+ 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");
+ }
+
+
+ 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);
+
+ return NULL;
+ }
+
+ if (hdr->magic != ZT_TRANSCODE_MAGIC) {
+ ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic);
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ hdr->srcfmt = (1 << ztp->srcfmt);
+ hdr->dstfmt = (1 << ztp->dstfmt);
+ if (ioctl(fd, ZT_TRANSCODE_OP, &x)) {
+ ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno));
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ ztp->fd = fd;
+ ztp->hdr = hdr;
+
+ return (struct ast_translator_pvt *) ztp;
+}
+
+static struct ast_translator_pvt *zap_new_g729toalaw(void)
+{
+ /* Request translation through zap if possible */
+ int fd;
+ unsigned int x = ZT_TCOP_RESET;
+ struct ast_translator_pvt *ztp;
+ struct zt_transcode_header *hdr;
+ int flags;
+
+ ztp = calloc(1,sizeof(struct ast_translator_pvt));
+ if(!ztp) {
+ ast_log(LOG_ERROR, "Could not allocate ztp structure.\n");
+ return NULL;
+ }
+ ztp->dstfmt = 3;
+ ztp->srcfmt = 8;
+
+ if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0)
+ return NULL;
+ 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");
+ }
+
+
+ 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);
+
+ return NULL;
+ }
+
+ if (hdr->magic != ZT_TRANSCODE_MAGIC) {
+ ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic);
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ hdr->srcfmt = (1 << ztp->srcfmt);
+ hdr->dstfmt = (1 << ztp->dstfmt);
+ if (ioctl(fd, ZT_TRANSCODE_OP, &x)) {
+ ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno));
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ ztp->fd = fd;
+ ztp->hdr = hdr;
+
+ return (struct ast_translator_pvt *) ztp;
+}
+
+static struct ast_translator_pvt *zap_new_g729toulaw(void)
+{
+ /* Request translation through zap if possible */
+ int fd;
+ unsigned int x = ZT_TCOP_RESET;
+ struct ast_translator_pvt *ztp;
+ struct zt_transcode_header *hdr;
+ int flags;
+
+ ztp = calloc(1,sizeof(struct ast_translator_pvt));
+ if(!ztp) {
+ ast_log(LOG_ERROR, "Could not allocate ztp structure.\n");
+ return NULL;
+ }
+ ztp->dstfmt = 2;
+ ztp->srcfmt = 8;
+
+ if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0)
+ return NULL;
+ 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");
+ }
+
+
+ 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);
+
+ return NULL;
+ }
+
+ if (hdr->magic != ZT_TRANSCODE_MAGIC) {
+ ast_log(LOG_ERROR, "Transcoder header (%08x) wasn't magic. Abandoning\n", hdr->magic);
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ hdr->srcfmt = (1 << ztp->srcfmt);
+ hdr->dstfmt = (1 << ztp->dstfmt);
+ if (ioctl(fd, ZT_TRANSCODE_OP, &x)) {
+ ast_log(LOG_ERROR, "Unable to attach transcoder: %s\n", strerror(errno));
+ munmap(hdr, sizeof(*hdr));
+ close(fd);
+
+ return NULL;
+ }
+
+ ztp->fd = fd;
+ ztp->hdr = hdr;
+
+ return (struct ast_translator_pvt *) ztp;
+}
+
+static struct ast_frame *fakesrc_sample(void)
+{
+ /* Don't bother really trying to test hardware ones. */
+ static struct ast_frame f = {
+ .frametype = AST_FRAME_VOICE,
+ .samples = 240,
+ .src = __PRETTY_FUNCTION__
+ };
+
+ return &f;
+}
+
+static int register_translator(int dst, int src)
+{
+ struct translator *zt;
+ int res;
+
+ if (!(zt = calloc(1, sizeof(*zt)))) {
+ ast_log(LOG_ERROR, "Could not allocate translator\n");
+ return -1;
+ }
+ if (!((cardsmode == 1 && (dst == 8 || src == 8)) || (cardsmode == 2 && (dst == 0 || src == 0)) || (cardsmode == 0)))
+ return -1;
+ snprintf((char *) (zt->t.name), sizeof(zt->t.name), "zap%sto%s",
+ ast_getformatname((1 << src)), ast_getformatname((1 << dst)));
+
+ if(src == 8 && dst == 2) /* G.729 to Ulaw */
+ zt->t.newpvt = zap_new_g729toulaw;
+ else if(src == 8 && dst == 3) /* G.729 to Alaw */
+ zt->t.newpvt = zap_new_g729toalaw;
+ else if(src == 2 && dst == 8) /* Ulaw to G.729 */
+ zt->t.newpvt = zap_new_ulawtog729;
+ else if(src == 3 && dst == 8) /* Alaw to G.729 */
+ zt->t.newpvt = zap_new_alawtog729;
+ else if(src == 0 && dst == 2) /* G.723 to Ulaw */
+ zt->t.newpvt = zap_new_g723toulaw;
+ else if(src == 0 && dst == 3) /* G.723 to Alaw */
+ zt->t.newpvt = zap_new_g723toalaw;
+ else if(src == 2 && dst == 0) /* Ulaw to G.723 */
+ zt->t.newpvt = zap_new_ulawtog723;
+ else if(src == 3 && dst == 0) /* Alaw to G.723 */
+ zt->t.newpvt = zap_new_alawtog723;
+
+ zt->t.frameout = zap_frameout;
+ zt->t.destroy = zap_destroy;
+ zt->t.sample = fakesrc_sample;
+ zt->t.framein = zap_framein;
+ zt->t.srcfmt = (1 << src);
+ zt->t.dstfmt = (1 << dst);
+ if ((res = ast_register_translator(&zt->t))) {
+ free(zt);
+ return -1;
+ }
+
+ AST_LIST_LOCK(&zap_translators);
+ AST_LIST_INSERT_HEAD(&zap_translators, zt, entry);
+ AST_LIST_UNLOCK(&zap_translators);
+
+ global_format_map.map[dst][src] = 1;
+
+ return res;
+}
+
+static void drop_translator(int dst, int src)
+{
+ struct translator *cur;
+
+ AST_LIST_LOCK(&zap_translators);
+ AST_LIST_TRAVERSE_SAFE_BEGIN(&zap_translators, cur, entry) {
+ if (cur->t.srcfmt != src)
+ continue;
+
+ if (cur->t.dstfmt != dst)
+ continue;
+
+ AST_LIST_REMOVE_CURRENT(&zap_translators, entry);
+ ast_unregister_translator(&cur->t);
+ free(cur);
+ global_format_map.map[dst][src] = 0;
+ break;
+ }
+ AST_LIST_TRAVERSE_SAFE_END;
+ AST_LIST_UNLOCK(&zap_translators);
+}
+
+static void unregister_translators(void)
+{
+ struct translator *cur;
+
+ AST_LIST_LOCK(&zap_translators);
+ while ((cur = AST_LIST_REMOVE_HEAD(&zap_translators, entry))) {
+ ast_unregister_translator(&cur->t);
+ free(cur);
+ }
+ AST_LIST_UNLOCK(&zap_translators);
+}
+
+static void parse_config(void)
+{
+ struct ast_variable *var;
+ struct ast_config *cfg = ast_config_load("codecs.conf");
+ cardsmode = 0;
+
+ if (!cfg)
+ return;
+
+ for (var = ast_variable_browse(cfg, "plc"); var; var = var->next) {
+ if (!strcasecmp(var->name, "genericplc")) {
+ global_useplc = ast_true(var->value);
+ if (option_verbose > 2)
+ ast_verbose(VERBOSE_PREFIX_3 "codec_zap: %susing generic PLC\n", global_useplc ? "" : "not ");
+ }
+ }
+ for (var = ast_variable_browse(cfg, "transcoder_card"); var; var = var->next) {
+ if (!strcasecmp(var->name, "mode")) {
+ if(strstr(var->value, "g729"))
+ cardsmode = 1;
+ else if(strstr(var->value, "g723"))
+ cardsmode = 2;
+ else if(strstr(var->value, "mixed"))
+ cardsmode = 0;
+ }
+ }
+
+ ast_config_destroy(cfg);
+}
+
+static int build_translators(struct format_map *map, unsigned int dstfmts, unsigned int srcfmts)
+{
+ unsigned int src, dst;
+
+ for (src = 0; src < 32; src++) {
+ for (dst = 0; dst < 32; dst++) {
+ if (!(srcfmts & (1<< src)))
+ continue;
+
+ if (!(dstfmts & (1 << dst)))
+ continue;
+
+ if (global_format_map.map[dst][src])
+ continue;
+
+ if (!register_translator(dst, src))
+ map->map[dst][src] = 1;
+ else
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static int find_transcoders(void)
+{
+ struct zt_transcode_info info = { 0, };
+ struct format_map map = { { { 0 } } };
+ int fd, res;
+ unsigned int x, y;
+
+ info.op = ZT_TCOP_GETINFO;
+ if ((fd = open("/dev/zap/transcode", O_RDWR)) < 0) {
+ ast_log(LOG_NOTICE, "No Zaptel transcoder support!\n");
+ return 0;
+ }
+ for (info.tcnum = 0; !(res = ioctl(fd, ZT_TRANSCODE_OP, &info)); info.tcnum++) {
+ if (option_verbose > 1)
+ ast_verbose(VERBOSE_PREFIX_2 "Found transcoder '%s'.\n", info.name);
+
+ if(build_translators(&map, info.dstfmts, info.srcfmts)) {
+ ast_mutex_lock(&channelcount);
+ totalchannels += info.numchannels;
+ ast_mutex_unlock(&channelcount);
+ }
+ }
+ close(fd);
+
+ if (!info.tcnum && (option_verbose > 1))
+ ast_verbose(VERBOSE_PREFIX_2 "No hardware transcoders found.\n");
+
+ for (x = 0; x < 32; x++) {
+ for (y = 0; y < 32; y++) {
+ if (!map.map[x][y] && global_format_map.map[x][y])
+ drop_translator(x, y);
+ }
+ }
+ ast_mutex_lock(&channelcount);
+ totalchannels = totalchannels/2;
+ ast_mutex_unlock(&channelcount);
+ return 0;
+}
+
+int reload(void)
+{
+ parse_config();
+ find_transcoders();
+
+ return 0;
+}
+
+int unload_module(void)
+{
+ if(!localusecnt)
+ return -1;
+ unregister_translators();
+ ast_cli_unregister_multiple(transcoder_cli, sizeof(transcoder_cli) / sizeof(struct ast_cli_entry));
+ return 0;
+}
+
+int load_module(void)
+{
+ ast_mutex_init(&channelcount);
+ parse_config();
+
+ find_transcoders();
+ ast_cli_register_multiple(transcoder_cli, sizeof(transcoder_cli) / sizeof(struct ast_cli_entry));
+ return 0;
+}
+
+char *description(void)
+{
+ return tdesc;
+}
+
+int usecount(void)
+{
+ int res;
+ STANDARD_USECOUNT(res);
+ return res;
+}
+
+char *key()
+{
+ return ASTERISK_GPL_KEY;
+}
projects / thirdparty / asterisk.git / commitdiff
