#include "asterisk.h"
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <sys/time.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "asterisk/lock.h"
#include "asterisk/channel.h"
#include "asterisk/file.h"
#include "asterisk/logger.h"
#include "asterisk/sched.h"
#include "asterisk/module.h"
#include "asterisk/endian.h"
Go to the source code of this file.
Defines | |
#define | BUF_SIZE 20 |
#define | G729A_SAMPLES 160 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static struct ast_frame * | g729_read (struct ast_filestream *s, int *whennext) |
static int | g729_seek (struct ast_filestream *fs, off_t sample_offset, int whence) |
static off_t | g729_tell (struct ast_filestream *fs) |
static int | g729_trunc (struct ast_filestream *fs) |
static int | g729_write (struct ast_filestream *fs, struct ast_frame *f) |
static int | load_module (void) |
static int | unload_module (void) |
Variables | |
static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_FIRST | AST_MODFLAG_BUILDSUM, .description = "Raw G729 data" , .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 = "361d7bb937402d51e4658efb5b4d76e4" , .load = load_module, .unload = unload_module, } |
static const struct ast_module_info * | ast_module_info = &__mod_info |
static struct ast_format | g729_f |
Definition in file format_g729.c.
#define BUF_SIZE 20 |
Definition at line 54 of file format_g729.c.
#define G729A_SAMPLES 160 |
Definition at line 55 of file format_g729.c.
Referenced by g729_read(), g729_seek(), and g729_tell().
static void __reg_module | ( | void | ) | [static] |
Definition at line 162 of file format_g729.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 162 of file format_g729.c.
static struct ast_frame* g729_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 57 of file format_g729.c.
References AST_FORMAT_G729A, AST_FRAME_SET_BUFFER, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), BUF_SIZE, errno, G729A_SAMPLES, LOG_WARNING, and s.
00058 { 00059 int res; 00060 /* Send a frame from the file to the appropriate channel */ 00061 s->fr.frametype = AST_FRAME_VOICE; 00062 s->fr.subclass = AST_FORMAT_G729A; 00063 s->fr.mallocd = 0; 00064 s->fr.samples = G729A_SAMPLES; 00065 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); 00066 if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != s->fr.datalen) { 00067 if (res && (res != 10)) /* XXX what for ? */ 00068 ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); 00069 return NULL; 00070 } 00071 *whennext = s->fr.samples; 00072 return &s->fr; 00073 }
static int g729_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
Definition at line 97 of file format_g729.c.
References BUF_SIZE, ast_filestream::f, G729A_SAMPLES, offset, and SEEK_FORCECUR.
00098 { 00099 long bytes; 00100 off_t min,cur,max,offset=0; 00101 min = 0; 00102 cur = ftello(fs->f); 00103 fseeko(fs->f, 0, SEEK_END); 00104 max = ftello(fs->f); 00105 00106 bytes = BUF_SIZE * (sample_offset / G729A_SAMPLES); 00107 if (whence == SEEK_SET) 00108 offset = bytes; 00109 else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) 00110 offset = cur + bytes; 00111 else if (whence == SEEK_END) 00112 offset = max - bytes; 00113 if (whence != SEEK_FORCECUR) { 00114 offset = (offset > max)?max:offset; 00115 } 00116 /* protect against seeking beyond begining. */ 00117 offset = (offset < min)?min:offset; 00118 if (fseeko(fs->f, offset, SEEK_SET) < 0) 00119 return -1; 00120 return 0; 00121 }
static off_t g729_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 131 of file format_g729.c.
References BUF_SIZE, ast_filestream::f, G729A_SAMPLES, and offset.
00132 { 00133 off_t offset = ftello(fs->f); 00134 return (offset/BUF_SIZE)*G729A_SAMPLES; 00135 }
static int g729_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 123 of file format_g729.c.
References ast_filestream::f.
00124 { 00125 /* Truncate file to current length */ 00126 if (ftruncate(fileno(fs->f), ftello(fs->f)) < 0) 00127 return -1; 00128 return 0; 00129 }
static int g729_write | ( | struct ast_filestream * | fs, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 75 of file format_g729.c.
References AST_FORMAT_G729A, AST_FRAME_VOICE, ast_log(), errno, ast_filestream::f, f, and LOG_WARNING.
00076 { 00077 int res; 00078 if (f->frametype != AST_FRAME_VOICE) { 00079 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00080 return -1; 00081 } 00082 if (f->subclass != AST_FORMAT_G729A) { 00083 ast_log(LOG_WARNING, "Asked to write non-G729 frame (%d)!\n", f->subclass); 00084 return -1; 00085 } 00086 if (f->datalen % 10) { 00087 ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 10\n", f->datalen); 00088 return -1; 00089 } 00090 if ((res = fwrite(f->data, 1, f->datalen, fs->f)) != f->datalen) { 00091 ast_log(LOG_WARNING, "Bad write (%d/10): %s\n", res, strerror(errno)); 00092 return -1; 00093 } 00094 return 0; 00095 }
static int load_module | ( | void | ) | [static] |
Definition at line 149 of file format_g729.c.
References ast_format_register, and g729_f.
00150 { 00151 return ast_format_register(&g729_f); 00152 }
static int unload_module | ( | void | ) | [static] |
Definition at line 154 of file format_g729.c.
References ast_format_unregister(), g729_f, and ast_format::name.
00155 { 00156 return ast_format_unregister(g729_f.name); 00157 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_FIRST | AST_MODFLAG_BUILDSUM, .description = "Raw G729 data" , .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 = "361d7bb937402d51e4658efb5b4d76e4" , .load = load_module, .unload = unload_module, } [static] |
Definition at line 162 of file format_g729.c.
const struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 162 of file format_g729.c.
struct ast_format g729_f [static] |