#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 | |
AST_MODULE_INFO_STANDARD (ASTERISK_GPL_KEY,"Raw G729 data") | |
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_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().
AST_MODULE_INFO_STANDARD | ( | ASTERISK_GPL_KEY | , | |
"Raw G729 data" | ||||
) |
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_format g729_f [static] |