#include "asterisk.h"
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <sys/time.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"
Go to the source code of this file.
Defines | |
#define | G723_MAX_SIZE 1024 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static struct ast_frame * | g723_read (struct ast_filestream *s, int *whennext) |
static int | g723_seek (struct ast_filestream *fs, off_t sample_offset, int whence) |
static off_t | g723_tell (struct ast_filestream *fs) |
static int | g723_trunc (struct ast_filestream *fs) |
static int | g723_write (struct ast_filestream *s, 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 = "G.723.1 Simple Timestamp File Format" , .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 | g723_1_f |
Definition in file format_g723.c.
#define G723_MAX_SIZE 1024 |
static void __reg_module | ( | void | ) | [static] |
Definition at line 166 of file format_g723.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 166 of file format_g723.c.
static struct ast_frame* g723_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static] |
Definition at line 50 of file format_g723.c.
References AST_FORMAT_G723_1, AST_FRAME_SET_BUFFER, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), errno, G723_MAX_SIZE, LOG_WARNING, and s.
00051 { 00052 unsigned short size; 00053 int res; 00054 int delay; 00055 /* Read the delay for the next packet, and schedule again if necessary */ 00056 /* XXX is this ignored ? */ 00057 if (fread(&delay, 1, 4, s->f) == 4) 00058 delay = ntohl(delay); 00059 else 00060 delay = -1; 00061 if (fread(&size, 1, 2, s->f) != 2) { 00062 /* Out of data, or the file is no longer valid. In any case 00063 go ahead and stop the stream */ 00064 return NULL; 00065 } 00066 /* Looks like we have a frame to read from here */ 00067 size = ntohs(size); 00068 if (size > G723_MAX_SIZE) { 00069 ast_log(LOG_WARNING, "Size %d is invalid\n", size); 00070 /* The file is apparently no longer any good, as we 00071 shouldn't ever get frames even close to this 00072 size. */ 00073 return NULL; 00074 } 00075 /* Read the data into the buffer */ 00076 s->fr.frametype = AST_FRAME_VOICE; 00077 s->fr.subclass = AST_FORMAT_G723_1; 00078 s->fr.mallocd = 0; 00079 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, size); 00080 if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != size) { 00081 ast_log(LOG_WARNING, "Short read (%d of %d bytes) (%s)!\n", res, size, strerror(errno)); 00082 return NULL; 00083 } 00084 *whennext = s->fr.samples = 240; 00085 return &s->fr; 00086 }
static int g723_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
static off_t g723_tell | ( | struct ast_filestream * | fs | ) | [static] |
static int g723_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 128 of file format_g723.c.
References ast_filestream::f.
00129 { 00130 /* Truncate file to current length */ 00131 if (ftruncate(fileno(fs->f), ftello(fs->f)) < 0) 00132 return -1; 00133 return 0; 00134 }
static int g723_write | ( | struct ast_filestream * | s, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 88 of file format_g723.c.
References AST_FORMAT_G723_1, AST_FRAME_VOICE, ast_log(), errno, f, LOG_WARNING, and s.
00089 { 00090 uint32_t delay; 00091 uint16_t size; 00092 int res; 00093 /* XXX there used to be a check s->fr means a read stream */ 00094 if (f->frametype != AST_FRAME_VOICE) { 00095 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00096 return -1; 00097 } 00098 if (f->subclass != AST_FORMAT_G723_1) { 00099 ast_log(LOG_WARNING, "Asked to write non-g723 frame!\n"); 00100 return -1; 00101 } 00102 delay = 0; 00103 if (f->datalen <= 0) { 00104 ast_log(LOG_WARNING, "Short frame ignored (%d bytes long?)\n", f->datalen); 00105 return 0; 00106 } 00107 if ((res = fwrite(&delay, 1, 4, s->f)) != 4) { 00108 ast_log(LOG_WARNING, "Unable to write delay: res=%d (%s)\n", res, strerror(errno)); 00109 return -1; 00110 } 00111 size = htons(f->datalen); 00112 if ((res = fwrite(&size, 1, 2, s->f)) != 2) { 00113 ast_log(LOG_WARNING, "Unable to write size: res=%d (%s)\n", res, strerror(errno)); 00114 return -1; 00115 } 00116 if ((res = fwrite(f->data, 1, f->datalen, s->f)) != f->datalen) { 00117 ast_log(LOG_WARNING, "Unable to write frame: res=%d (%s)\n", res, strerror(errno)); 00118 return -1; 00119 } 00120 return 0; 00121 }
static int load_module | ( | void | ) | [static] |
Definition at line 153 of file format_g723.c.
References ast_format_register, and g723_1_f.
00154 { 00155 return ast_format_register(&g723_1_f); 00156 }
static int unload_module | ( | void | ) | [static] |
Definition at line 158 of file format_g723.c.
References ast_format_unregister(), g723_1_f, and ast_format::name.
00159 { 00160 return ast_format_unregister(g723_1_f.name); 00161 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_FIRST | AST_MODFLAG_BUILDSUM, .description = "G.723.1 Simple Timestamp File Format" , .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 166 of file format_g723.c.
const struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 166 of file format_g723.c.
struct ast_format g723_1_f [static] |