multicast_rtp.h File Reference

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Functions
struct ast_multicast_rtp_options *	ast_multicast_rtp_create_options (const char *type, const char *options)
	Create multicast RTP options. More...
void	ast_multicast_rtp_free_options (struct ast_multicast_rtp_options *mcast_options)
	Free multicast RTP options. More...
struct ast_format *	ast_multicast_rtp_options_get_format (struct ast_multicast_rtp_options *mcast_options)
	Get format specified in multicast options. More...

Function Documentation

ast_multicast_rtp_create_options()

struct ast_multicast_rtp_options * ast_multicast_rtp_create_options	(	const char *	type,
		const char *	options
	)

Create multicast RTP options.

These are passed to the multicast RTP engine on its creation.

Parameters

type	The type of multicast RTP, either "basic" or "linksys"
options	Miscellaneous options

Return values

NULL	Failure
non-NULL	success

Definition at line 140 of file res_rtp_multicast.c.

{
    struct ast_multicast_rtp_options *mcast_options;
    char *pos;
 
    mcast_options = ast_calloc(1, sizeof(*mcast_options)
            + strlen(type)
            + strlen(S_OR(options, "")) + 2);
    if (!mcast_options) {
        return NULL;
    }
 
    pos = mcast_options->buf;
 
    /* Safe */
    strcpy(pos, type);
    mcast_options->type = pos;
    pos += strlen(type) + 1;
 
    if (!ast_strlen_zero(options)) {
        strcpy(pos, options); /* Safe */
    }
    mcast_options->options = pos;
 
    if (ast_app_parse_options(multicast_rtp_options, &mcast_options->opts,
        mcast_options->opt_args, mcast_options->options)) {
        ast_log(LOG_WARNING, "Error parsing multicast RTP options\n");
        ast_multicast_rtp_free_options(mcast_options);
        return NULL;
    }
 
    return mcast_options;
}

References ast_app_parse_options(), ast_calloc, ast_log, ast_multicast_rtp_free_options(), ast_strlen_zero(), ast_multicast_rtp_options::buf, LOG_WARNING, multicast_rtp_options, NULL, ast_multicast_rtp_options::opt_args, ast_multicast_rtp_options::options, options, ast_multicast_rtp_options::opts, S_OR, type, and ast_multicast_rtp_options::type.

Referenced by multicast_rtp_request().

ast_multicast_rtp_free_options()

void ast_multicast_rtp_free_options

(

struct ast_multicast_rtp_options *

mcast_options

)

Free multicast RTP options.

This function is NULL-tolerant

Parameters

mcast_options

Options to free

Definition at line 175 of file res_rtp_multicast.c.

{
    ast_free(mcast_options);
}

References ast_free.

Referenced by ast_multicast_rtp_create_options(), and multicast_rtp_request().

ast_multicast_rtp_options_get_format()

struct ast_format * ast_multicast_rtp_options_get_format

(

struct ast_multicast_rtp_options *

mcast_options

)

Get format specified in multicast options.

Multicast options allow for a format to be selected. This function accesses the selected format and creates an ast_format structure for it.

Parameters

mcast_options

The options where a codec was specified

Return values

NULL	No format specified in the options
non-NULL	The format to use for communication

Definition at line 180 of file res_rtp_multicast.c.

{
    if (ast_test_flag(&mcast_options->opts, OPT_CODEC)
        && !ast_strlen_zero(mcast_options->opt_args[OPT_ARG_CODEC])) {
        return ast_format_cache_get(mcast_options->opt_args[OPT_ARG_CODEC]);
    }
 
    return NULL;
}

References ast_format_cache_get, ast_strlen_zero(), ast_test_flag, NULL, OPT_ARG_CODEC, ast_multicast_rtp_options::opt_args, OPT_CODEC, and ast_multicast_rtp_options::opts.

Referenced by multicast_rtp_request().