Asterisk - The Open Source Telephony Project GIT-master-2de1a68
Functions | Variables
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_moduleAST_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_formatsiren14_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 = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .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_infoast_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.

85{
88 }
89
91}
#define ast_format_interface_register(codec, interface)
Register a format interface for use with the provided codec.
Definition: format.h:273
@ AST_MODULE_LOAD_SUCCESS
Definition: module.h:70
@ AST_MODULE_LOAD_DECLINE
Module has failed to load, may be in an inconsistent state.
Definition: module.h:78
static struct ast_format_interface siren14_interface

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.

47{
48 return 0;
49}

◆ siren14_destroy()

static void siren14_destroy ( struct ast_format format)
static

Definition at line 41 of file res_format_attr_siren14.c.

42{
43}

◆ 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.

73{
74 ast_str_append(str, 0, "a=fmtp:%u bitrate=48000\r\n", payload);
75}
const char * str
Definition: app_jack.c:147
int ast_str_append(struct ast_str **buf, ssize_t max_len, const char *fmt,...)
Append to a thread local dynamic string.
Definition: strings.h:1139

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.

52{
53 char *attribs = ast_strdupa(attributes), *attrib;
54 unsigned int val;
55
56 /* lower-case everything, so we are case-insensitive */
57 for (attrib = attribs; *attrib; ++attrib) {
58 *attrib = tolower(*attrib);
59 } /* based on channels/chan_sip.c:process_a_sdp_image() */
60
61 if (sscanf(attribs, "bitrate=%30u", &val) == 1) {
62 if (val != 48000) {
63 ast_log(LOG_WARNING, "Got siren14 offer at %u bps, but only 48000 bps supported; ignoring.\n", val);
64 return NULL;
65 }
66 }
67
68 /* We aren't modifying the format and once passed back it won't be touched, so use what we were given */
69 return ao2_bump((struct ast_format *)format);
70}
#define ast_strdupa(s)
duplicate a string in memory from the stack
Definition: astmm.h:298
#define ast_log
Definition: astobj2.c:42
#define ao2_bump(obj)
Bump refcount on an AO2 object by one, returning the object.
Definition: astobj2.h:480
#define LOG_WARNING
#define NULL
Definition: resample.c:96
Definition of a media format.
Definition: format.c:43
Definition: ast_expr2.c:325

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.

94{
95 return 0;
96}

Variable Documentation

◆ __mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Siren14 Format Attribute Module" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .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.

Referenced by load_module().