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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013 Digium, Inc.
*
* Richard Mudgett <rmudgett@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 ConfBridge recorder channel driver
*
* \author Richard Mudgett <rmudgett@digium.com>
*
* See Also:
* \arg \ref AstCREDITS
*/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/channel.h"
#include "asterisk/bridge.h"
#include "asterisk/format_cache.h"
#include "include/confbridge.h"
/* ------------------------------------------------------------------- */
static unsigned int name_sequence = 0;
static int rec_call(struct ast_channel *chan, const char *addr, int timeout)
{
/* Make sure anyone calling ast_call() for this channel driver is going to fail. */
return -1;
}
static struct ast_frame *rec_read(struct ast_channel *ast)
{
return &ast_null_frame;
}
static int rec_write(struct ast_channel *ast, struct ast_frame *f)
{
return 0;
}
static struct ast_channel *rec_request(const char *type, struct ast_format_cap *cap, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor, const char *data, int *cause)
{
struct ast_channel *chan;
const char *conf_name = data;
RAII_VAR(struct ast_format_cap *, capabilities, NULL, ao2_cleanup);
int generated_seqno = ast_atomic_fetchadd_int((int *) &name_sequence, +1);
capabilities = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
if (!capabilities) {
return NULL;
}
ast_format_cap_append_by_type(capabilities, AST_MEDIA_TYPE_UNKNOWN);
chan = ast_channel_alloc(1, AST_STATE_UP, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 0,
"CBRec/conf-%s-uid-%08x",
conf_name, (unsigned) generated_seqno);
if (!chan) {
return NULL;
}
if (ast_channel_add_bridge_role(chan, "recorder")) {
ast_channel_unlock(chan);
ast_channel_release(chan);
return NULL;
}
ast_channel_tech_set(chan, conf_record_get_tech());
ast_channel_nativeformats_set(chan, capabilities);
ast_channel_set_writeformat(chan, ast_format_slin);
ast_channel_set_rawwriteformat(chan, ast_format_slin);
ast_channel_set_readformat(chan, ast_format_slin);
ast_channel_set_rawreadformat(chan, ast_format_slin);
ast_channel_unlock(chan);
return chan;
}
static struct ast_channel_tech record_tech = {
.type = "CBRec",
.description = "Conference Bridge Recording Channel",
.requester = rec_request,
.call = rec_call,
.read = rec_read,
.write = rec_write,
.properties = AST_CHAN_TP_INTERNAL,
};
struct ast_channel_tech *conf_record_get_tech(void)
{
return &record_tech;
}
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