#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 | |
AST_MODULE_INFO_STANDARD (ASTERISK_GPL_KEY,"G.723.1 Simple Timestamp File Format") | |
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_format | g723_1_f |
Definition in file format_g723.c.
#define G723_MAX_SIZE 1024 |
AST_MODULE_INFO_STANDARD | ( | ASTERISK_GPL_KEY | , | |
"G.723.1 Simple Timestamp File Format" | ||||
) |
static struct ast_frame* g723_read | ( | struct ast_filestream * | s, | |
int * | whennext | |||
) | [static, read] |
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(), ast_filestream::buf, ast_frame::data, ast_frame::datalen, ast_filestream::f, ast_filestream::fr, ast_frame::frametype, G723_MAX_SIZE, LOG_WARNING, ast_frame::mallocd, ast_frame::samples, and ast_frame::subclass.
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f) != 2) { 00062 /* Out of data, or the file is no longer valid.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(), ast_frame::data, ast_frame::datalen, ast_filestream::f, ast_frame::frametype, LOG_WARNING, and ast_frame::subclass.
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.
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(), and ast_format::name.
00159 { 00160 return ast_format_unregister(g723_1_f.name); 00161 }
struct ast_format g723_1_f [static] |
Definition at line 141 of file format_g723.c.