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 = "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 = "30ef0c93b36035ec78c9cfd712d36d9b" , .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.

References ast_format_interface_register, AST_MODULE_LOAD_DECLINE, and AST_MODULE_LOAD_SUCCESS.

Referenced by unload_module().

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

   return AST_MODULE_LOAD_SUCCESS;
}

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.

References ast_str_append().

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

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.

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

{
   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);
}

unload_module()

static int unload_module ( void  )

static

Definition at line 93 of file res_format_attr_siren14.c.

References AST_MODFLAG_LOAD_ORDER, AST_MODPRI_CHANNEL_DEPEND, AST_MODULE_INFO(), AST_MODULE_SUPPORT_CORE, ASTERISK_GPL_KEY, and load_module().

{
   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 = "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 = "30ef0c93b36035ec78c9cfd712d36d9b" , .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.