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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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