#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 | ILBC_BUF_SIZE 50 |
#define | ILBC_SAMPLES 240 |
Functions | |
AST_MODULE_INFO_STANDARD (ASTERISK_GPL_KEY,"Raw iLBC data") | |
static struct ast_frame * | ilbc_read (struct ast_filestream *s, int *whennext) |
static int | ilbc_seek (struct ast_filestream *fs, off_t sample_offset, int whence) |
static off_t | ilbc_tell (struct ast_filestream *fs) |
static int | ilbc_trunc (struct ast_filestream *fs) |
static int | ilbc_write (struct ast_filestream *fs, struct ast_frame *f) |
static int | load_module (void) |
static int | unload_module (void) |
Variables | |
static struct ast_format | ilbc_f |
Definition in file format_ilbc.c.
#define ILBC_BUF_SIZE 50 |
Definition at line 53 of file format_ilbc.c.
Referenced by ilbc_read(), ilbc_seek(), and ilbc_tell().
#define ILBC_SAMPLES 240 |
Definition at line 54 of file format_ilbc.c.
Referenced by ilbc_read(), ilbc_seek(), and ilbc_tell().
AST_MODULE_INFO_STANDARD | ( | ASTERISK_GPL_KEY | , | |
"Raw iLBC data" | ||||
) |
static struct ast_frame* ilbc_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static, read] |
Definition at line 56 of file format_ilbc.c.
References AST_FORMAT_ILBC, AST_FRAME_SET_BUFFER, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), ast_filestream::buf, ast_frame::data, ast_frame::datalen, errno, ast_filestream::f, ast_filestream::fr, ast_frame::frametype, ILBC_BUF_SIZE, ILBC_SAMPLES, LOG_WARNING, ast_frame::mallocd, ast_frame::samples, and ast_frame::subclass.
00057 { 00058 int res; 00059 /* Send a frame from the file to the appropriate channel */ 00060 s->fr.frametype = AST_FRAME_VOICE; 00061 s->fr.subclass = AST_FORMAT_ILBC; 00062 s->fr.mallocd = 0; 00063 AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, ILBC_BUF_SIZE); 00064 if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != s->fr.datalen) { 00065 if (res) 00066 ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); 00067 return NULL; 00068 } 00069 *whennext = s->fr.samples = ILBC_SAMPLES; 00070 return &s->fr; 00071 }
static int ilbc_seek | ( | struct ast_filestream * | fs, | |
off_t | sample_offset, | |||
int | whence | |||
) | [static] |
Definition at line 95 of file format_ilbc.c.
References ast_filestream::f, ILBC_BUF_SIZE, ILBC_SAMPLES, offset, and SEEK_FORCECUR.
00096 { 00097 long bytes; 00098 off_t min,cur,max,offset=0; 00099 min = 0; 00100 cur = ftello(fs->f); 00101 fseeko(fs->f, 0, SEEK_END); 00102 max = ftello(fs->f); 00103 00104 bytes = ILBC_BUF_SIZE * (sample_offset / ILBC_SAMPLES); 00105 if (whence == SEEK_SET) 00106 offset = bytes; 00107 else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) 00108 offset = cur + bytes; 00109 else if (whence == SEEK_END) 00110 offset = max - bytes; 00111 if (whence != SEEK_FORCECUR) { 00112 offset = (offset > max)?max:offset; 00113 } 00114 /* protect against seeking beyond begining. */ 00115 offset = (offset < min)?min:offset; 00116 if (fseeko(fs->f, offset, SEEK_SET) < 0) 00117 return -1; 00118 return 0; 00119 }
static off_t ilbc_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 129 of file format_ilbc.c.
References ast_filestream::f, ILBC_BUF_SIZE, ILBC_SAMPLES, and offset.
00130 { 00131 off_t offset = ftello(fs->f); 00132 return (offset/ILBC_BUF_SIZE)*ILBC_SAMPLES; 00133 }
static int ilbc_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 121 of file format_ilbc.c.
References ast_filestream::f.
00122 { 00123 /* Truncate file to current length */ 00124 if (ftruncate(fileno(fs->f), ftello(fs->f)) < 0) 00125 return -1; 00126 return 0; 00127 }
static int ilbc_write | ( | struct ast_filestream * | fs, | |
struct ast_frame * | f | |||
) | [static] |
Definition at line 73 of file format_ilbc.c.
References AST_FORMAT_ILBC, AST_FRAME_VOICE, ast_log(), ast_frame::data, ast_frame::datalen, errno, ast_filestream::f, ast_frame::frametype, LOG_WARNING, and ast_frame::subclass.
00074 { 00075 int res; 00076 if (f->frametype != AST_FRAME_VOICE) { 00077 ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); 00078 return -1; 00079 } 00080 if (f->subclass != AST_FORMAT_ILBC) { 00081 ast_log(LOG_WARNING, "Asked to write non-iLBC frame (%d)!\n", f->subclass); 00082 return -1; 00083 } 00084 if (f->datalen % 50) { 00085 ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 50\n", f->datalen); 00086 return -1; 00087 } 00088 if ((res = fwrite(f->data, 1, f->datalen, fs->f)) != f->datalen) { 00089 ast_log(LOG_WARNING, "Bad write (%d/50): %s\n", res, strerror(errno)); 00090 return -1; 00091 } 00092 return 0; 00093 }
static int load_module | ( | void | ) | [static] |
Definition at line 147 of file format_ilbc.c.
References ast_format_register.
00148 { 00149 return ast_format_register(&ilbc_f); 00150 }
static int unload_module | ( | void | ) | [static] |
Definition at line 152 of file format_ilbc.c.
References ast_format_unregister(), and ast_format::name.
00153 { 00154 return ast_format_unregister(ilbc_f.name); 00155 }
struct ast_format ilbc_f [static] |
Definition at line 135 of file format_ilbc.c.