aboutsummaryrefslogtreecommitdiffstats
path: root/channels/chan_nbs.c
diff options
context:
space:
mode:
Diffstat (limited to 'channels/chan_nbs.c')
-rw-r--r--channels/chan_nbs.c302
1 files changed, 0 insertions, 302 deletions
diff --git a/channels/chan_nbs.c b/channels/chan_nbs.c
deleted file mode 100644
index b231127ce..000000000
--- a/channels/chan_nbs.c
+++ /dev/null
@@ -1,302 +0,0 @@
-/*
- * Asterisk -- An open source telephony toolkit.
- *
- * Copyright (C) 1999 - 2006, Digium, Inc.
- *
- * Mark Spencer <markster@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 Network broadcast sound support channel driver
- *
- * \author Mark Spencer <markster@digium.com>
- *
- * \ingroup channel_drivers
- */
-
-/*** MODULEINFO
- <depend>nbs</depend>
- ***/
-
-#include "asterisk.h"
-
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
-
-#include <stdio.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <arpa/inet.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <nbs.h>
-
-#include "asterisk/lock.h"
-#include "asterisk/channel.h"
-#include "asterisk/config.h"
-#include "asterisk/logger.h"
-#include "asterisk/module.h"
-#include "asterisk/pbx.h"
-#include "asterisk/options.h"
-#include "asterisk/utils.h"
-
-static const char tdesc[] = "Network Broadcast Sound Driver";
-
-/* Only linear is allowed */
-static int prefformat = AST_FORMAT_SLINEAR;
-
-static char context[AST_MAX_EXTENSION] = "default";
-static char type[] = "NBS";
-
-/* NBS creates private structures on demand */
-
-struct nbs_pvt {
- NBS *nbs;
- struct ast_channel *owner; /* Channel we belong to, possibly NULL */
- char app[16]; /* Our app */
- char stream[80]; /* Our stream */
- struct ast_frame fr; /* "null" frame */
- struct ast_module_user *u; /*! for holding a reference to this module */
-};
-
-static struct ast_channel *nbs_request(const char *type, int format, void *data, int *cause);
-static int nbs_call(struct ast_channel *ast, char *dest, int timeout);
-static int nbs_hangup(struct ast_channel *ast);
-static struct ast_frame *nbs_xread(struct ast_channel *ast);
-static int nbs_xwrite(struct ast_channel *ast, struct ast_frame *frame);
-
-static const struct ast_channel_tech nbs_tech = {
- .type = type,
- .description = tdesc,
- .capabilities = AST_FORMAT_SLINEAR,
- .requester = nbs_request,
- .call = nbs_call,
- .hangup = nbs_hangup,
- .read = nbs_xread,
- .write = nbs_xwrite,
-};
-
-static int nbs_call(struct ast_channel *ast, char *dest, int timeout)
-{
- struct nbs_pvt *p;
-
- p = ast->tech_pvt;
-
- if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
- ast_log(LOG_WARNING, "nbs_call called on %s, neither down nor reserved\n", ast->name);
- return -1;
- }
- /* When we call, it just works, really, there's no destination... Just
- ring the phone and wait for someone to answer */
- if (option_debug)
- ast_log(LOG_DEBUG, "Calling %s on %s\n", dest, ast->name);
-
- /* If we can't connect, return congestion */
- if (nbs_connect(p->nbs)) {
- ast_log(LOG_WARNING, "NBS Connection failed on %s\n", ast->name);
- ast_queue_control(ast, AST_CONTROL_CONGESTION);
- } else {
- ast_setstate(ast, AST_STATE_RINGING);
- ast_queue_control(ast, AST_CONTROL_ANSWER);
- }
-
- return 0;
-}
-
-static void nbs_destroy(struct nbs_pvt *p)
-{
- if (p->nbs)
- nbs_delstream(p->nbs);
- ast_module_user_remove(p->u);
- free(p);
-}
-
-static struct nbs_pvt *nbs_alloc(void *data)
-{
- struct nbs_pvt *p;
- int flags = 0;
- char stream[256];
- char *opts;
-
- ast_copy_string(stream, data, sizeof(stream));
- if ((opts = strchr(stream, ':'))) {
- *opts = '\0';
- opts++;
- } else
- opts = "";
- p = malloc(sizeof(struct nbs_pvt));
- if (p) {
- memset(p, 0, sizeof(struct nbs_pvt));
- if (!ast_strlen_zero(opts)) {
- if (strchr(opts, 'm'))
- flags |= NBS_FLAG_MUTE;
- if (strchr(opts, 'o'))
- flags |= NBS_FLAG_OVERSPEAK;
- if (strchr(opts, 'e'))
- flags |= NBS_FLAG_EMERGENCY;
- if (strchr(opts, 'O'))
- flags |= NBS_FLAG_OVERRIDE;
- } else
- flags = NBS_FLAG_OVERSPEAK;
-
- ast_copy_string(p->stream, stream, sizeof(p->stream));
- p->nbs = nbs_newstream("asterisk", stream, flags);
- if (!p->nbs) {
- ast_log(LOG_WARNING, "Unable to allocate new NBS stream '%s' with flags %d\n", stream, flags);
- free(p);
- p = NULL;
- } else {
- /* Set for 8000 hz mono, 640 samples */
- nbs_setbitrate(p->nbs, 8000);
- nbs_setchannels(p->nbs, 1);
- nbs_setblocksize(p->nbs, 640);
- nbs_setblocking(p->nbs, 0);
- }
- }
- return p;
-}
-
-static int nbs_hangup(struct ast_channel *ast)
-{
- struct nbs_pvt *p;
- p = ast->tech_pvt;
- if (option_debug)
- ast_log(LOG_DEBUG, "nbs_hangup(%s)\n", ast->name);
- if (!ast->tech_pvt) {
- ast_log(LOG_WARNING, "Asked to hangup channel not connected\n");
- return 0;
- }
- nbs_destroy(p);
- ast->tech_pvt = NULL;
- ast_setstate(ast, AST_STATE_DOWN);
- return 0;
-}
-
-static struct ast_frame *nbs_xread(struct ast_channel *ast)
-{
- struct nbs_pvt *p = ast->tech_pvt;
-
-
- /* Some nice norms */
- p->fr.datalen = 0;
- p->fr.samples = 0;
- p->fr.data = NULL;
- p->fr.src = type;
- p->fr.offset = 0;
- p->fr.mallocd=0;
- p->fr.delivery.tv_sec = 0;
- p->fr.delivery.tv_usec = 0;
-
- ast_log(LOG_DEBUG, "Returning null frame on %s\n", ast->name);
-
- return &p->fr;
-}
-
-static int nbs_xwrite(struct ast_channel *ast, struct ast_frame *frame)
-{
- struct nbs_pvt *p = ast->tech_pvt;
- /* Write a frame of (presumably voice) data */
- if (frame->frametype != AST_FRAME_VOICE) {
- if (frame->frametype != AST_FRAME_IMAGE)
- ast_log(LOG_WARNING, "Don't know what to do with frame type '%d'\n", frame->frametype);
- return 0;
- }
- if (!(frame->subclass &
- (AST_FORMAT_SLINEAR))) {
- ast_log(LOG_WARNING, "Cannot handle frames in %d format\n", frame->subclass);
- return 0;
- }
- if (ast->_state != AST_STATE_UP) {
- /* Don't try tos end audio on-hook */
- return 0;
- }
- if (nbs_write(p->nbs, frame->data, frame->datalen / 2) < 0)
- return -1;
- return 0;
-}
-
-static struct ast_channel *nbs_new(struct nbs_pvt *i, int state)
-{
- struct ast_channel *tmp;
- tmp = ast_channel_alloc(1, state, 0, 0, "", "s", context, 0, "NBS/%s", i->stream);
- if (tmp) {
- tmp->tech = &nbs_tech;
- tmp->fds[0] = nbs_fd(i->nbs);
- tmp->nativeformats = prefformat;
- tmp->rawreadformat = prefformat;
- tmp->rawwriteformat = prefformat;
- tmp->writeformat = prefformat;
- tmp->readformat = prefformat;
- if (state == AST_STATE_RING)
- tmp->rings = 1;
- tmp->tech_pvt = i;
- ast_copy_string(tmp->context, context, sizeof(tmp->context));
- ast_copy_string(tmp->exten, "s", sizeof(tmp->exten));
- ast_string_field_set(tmp, language, "");
- i->owner = tmp;
- i->u = ast_module_user_add(tmp);
- if (state != AST_STATE_DOWN) {
- if (ast_pbx_start(tmp)) {
- ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
- ast_hangup(tmp);
- }
- }
- } else
- ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
- return tmp;
-}
-
-
-static struct ast_channel *nbs_request(const char *type, int format, void *data, int *cause)
-{
- int oldformat;
- struct nbs_pvt *p;
- struct ast_channel *tmp = NULL;
-
- oldformat = format;
- format &= (AST_FORMAT_SLINEAR);
- if (!format) {
- ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", oldformat);
- return NULL;
- }
- p = nbs_alloc(data);
- if (p) {
- tmp = nbs_new(p, AST_STATE_DOWN);
- if (!tmp)
- nbs_destroy(p);
- }
- return tmp;
-}
-
-static int unload_module(void)
-{
- /* First, take us out of the channel loop */
- ast_channel_unregister(&nbs_tech);
- return 0;
-}
-
-static int load_module(void)
-{
- /* Make sure we can register our channel type */
- if (ast_channel_register(&nbs_tech)) {
- ast_log(LOG_ERROR, "Unable to register channel class %s\n", type);
- return -1;
- }
- return 0;
-}
-
-AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Network Broadcast Sound Support");
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 13:24:19 +0000