res_format_attr_siren14.c File Reference

Siren14 format attribute interface. More...

#include "asterisk.h"
#include <ctype.h>
#include "asterisk/module.h"
#include "asterisk/format.h"
#include "asterisk/astobj2.h"
#include "asterisk/logger.h"
#include "asterisk/strings.h"

Include dependency graph for res_format_attr_siren14.c:

Go to the source code of this file.

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
struct ast_module *	AST_MODULE_SELF_SYM (void)
static int	load_module (void)
static int	siren14_clone (const struct ast_format *src, struct ast_format *dst)
static void	siren14_destroy (struct ast_format *format)
static void	siren14_generate_sdp_fmtp (const struct ast_format *format, unsigned int payload, struct ast_str **str)
static struct ast_format *	siren14_parse_sdp_fmtp (const struct ast_format *format, const char *attributes)
static int	unload_module (void)

Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Siren14 Format Attribute Module" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_CHANNEL_DEPEND, }
static const struct ast_module_info *	ast_module_info = &__mod_info
static struct ast_format_interface	siren14_interface

Detailed Description

Siren14 format attribute interface.

Author

Joshua Colp jcolp.nosp@m.@dig.nosp@m.ium.c.nosp@m.om

Definition in file res_format_attr_siren14.c.

Function Documentation

__reg_module()

static void __reg_module ( void  )

static

Definition at line 103 of file res_format_attr_siren14.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 103 of file res_format_attr_siren14.c.

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 103 of file res_format_attr_siren14.c.

load_module()

static int load_module ( void  )

static

Definition at line 84 of file res_format_attr_siren14.c.

{
    if (ast_format_interface_register("siren14", &siren14_interface)) {
        return AST_MODULE_LOAD_DECLINE;
    }
 
    return AST_MODULE_LOAD_SUCCESS;
}

References ast_format_interface_register, AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_SUCCESS, and siren14_interface.

siren14_clone()

static int siren14_clone ( const struct ast_format *  src, struct ast_format *  dst  )

static

Definition at line 46 of file res_format_attr_siren14.c.

{
    return 0;
}

siren14_destroy()

static void siren14_destroy ( struct ast_format *  format )

static

Definition at line 41 of file res_format_attr_siren14.c.

{
}

siren14_generate_sdp_fmtp()

static void siren14_generate_sdp_fmtp ( const struct ast_format *  format, unsigned int  payload, struct ast_str **  str  )

static

Definition at line 72 of file res_format_attr_siren14.c.

{
    ast_str_append(str, 0, "a=fmtp:%u bitrate=48000\r\n", payload);
}

References ast_str_append(), and str.

siren14_parse_sdp_fmtp()

static struct ast_format * siren14_parse_sdp_fmtp ( const struct ast_format *  format, const char *  attributes  )

static

Definition at line 51 of file res_format_attr_siren14.c.

{
    char *attribs = ast_strdupa(attributes), *attrib;
    unsigned int val;
 
    /* lower-case everything, so we are case-insensitive */
    for (attrib = attribs; *attrib; ++attrib) {
        *attrib = tolower(*attrib);
    } /* based on channels/chan_sip.c:process_a_sdp_image() */
 
    if (sscanf(attribs, "bitrate=%30u", &val) == 1) {
        if (val != 48000) {
            ast_log(LOG_WARNING, "Got siren14 offer at %u bps, but only 48000 bps supported; ignoring.\n", val);
            return NULL;
        }
    }
 
    /* We aren't modifying the format and once passed back it won't be touched, so use what we were given */
    return ao2_bump((struct ast_format *)format);
}

References ao2_bump, ast_log, ast_strdupa, LOG_WARNING, and NULL.

unload_module()

static int unload_module ( void  )

static

Definition at line 93 of file res_format_attr_siren14.c.

{
    return 0;
}

Variable Documentation

__mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Siren14 Format Attribute Module" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_CHANNEL_DEPEND, }

static

Definition at line 103 of file res_format_attr_siren14.c.

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 103 of file res_format_attr_siren14.c.

siren14_interface

struct ast_format_interface siren14_interface

static

Definition at line 77 of file res_format_attr_siren14.c.

                                                       {
    .format_destroy = siren14_destroy,
    .format_clone = siren14_clone,
    .format_parse_sdp_fmtp = siren14_parse_sdp_fmtp,
    .format_generate_sdp_fmtp = siren14_generate_sdp_fmtp,
};

Referenced by load_module().