format_g723.c File Reference
Old-style G.723.1 frame/timestamp format. More...
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 __MODULE_INFO_SECTION | __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "G.723.1 Simple Timestamp File Format" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = 10, } |
| static struct ast_module_info * | ast_module_info = &__mod_info |
| static struct ast_format | g723_1_f |
Detailed Description
Old-style G.723.1 frame/timestamp format.
- Extensions: g723, g723sf
Definition in file format_g723.c.
Define Documentation
| #define G723_MAX_SIZE 1024 |
Definition at line 35 of file format_g723.c.
Referenced by g723_read().
Function Documentation
| static void __reg_module | ( | void | ) | [static] |
Definition at line 156 of file format_g723.c.
| static void __unreg_module | ( | void | ) | [static] |
Definition at line 156 of file format_g723.c.
| static struct ast_frame* g723_read | ( | struct ast_filestream * | s, |
| int * | whennext | ||
| ) | [static, read] |
Definition at line 37 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, errno, ast_filestream::f, ast_filestream::fr, ast_frame::frametype, G723_MAX_SIZE, LOG_WARNING, ast_frame::mallocd, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.
{
unsigned short size;
int res;
int delay;
/* Read the delay for the next packet, and schedule again if necessary */
/* XXX is this ignored ? */
if (fread(&delay, 1, 4, s->f) == 4)
delay = ntohl(delay);
else
delay = -1;
if (fread(&size, 1, 2, s->f) != 2) {
/* Out of data, or the file is no longer valid. In any case
go ahead and stop the stream */
return NULL;
}
/* Looks like we have a frame to read from here */
size = ntohs(size);
if (size > G723_MAX_SIZE) {
ast_log(LOG_WARNING, "Size %d is invalid\n", size);
/* The file is apparently no longer any good, as we
shouldn't ever get frames even close to this
size. */
return NULL;
}
/* Read the data into the buffer */
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_G723_1;
s->fr.mallocd = 0;
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, size);
if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != size) {
ast_log(LOG_WARNING, "Short read (%d of %d bytes) (%s)!\n", res, size, strerror(errno));
return NULL;
}
*whennext = s->fr.samples = 240;
return &s->fr;
}
| static int g723_seek | ( | struct ast_filestream * | fs, |
| off_t | sample_offset, | ||
| int | whence | ||
| ) | [static] |
Definition at line 110 of file format_g723.c.
{
return -1;
}
| static off_t g723_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 123 of file format_g723.c.
{
return -1;
}
| static int g723_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 115 of file format_g723.c.
References ast_filestream::f.
| static int g723_write | ( | struct ast_filestream * | s, |
| struct ast_frame * | f | ||
| ) | [static] |
Definition at line 75 of file format_g723.c.
References AST_FORMAT_G723_1, AST_FRAME_VOICE, ast_log(), ast_frame::data, ast_frame::datalen, errno, ast_filestream::f, ast_frame::frametype, fwrite, LOG_WARNING, ast_frame::ptr, and ast_frame::subclass.
{
uint32_t delay;
uint16_t size;
int res;
/* XXX there used to be a check s->fr means a read stream */
if (f->frametype != AST_FRAME_VOICE) {
ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
return -1;
}
if (f->subclass != AST_FORMAT_G723_1) {
ast_log(LOG_WARNING, "Asked to write non-g723 frame!\n");
return -1;
}
delay = 0;
if (f->datalen <= 0) {
ast_log(LOG_WARNING, "Short frame ignored (%d bytes long?)\n", f->datalen);
return 0;
}
if ((res = fwrite(&delay, 1, 4, s->f)) != 4) {
ast_log(LOG_WARNING, "Unable to write delay: res=%d (%s)\n", res, strerror(errno));
return -1;
}
size = htons(f->datalen);
if ((res = fwrite(&size, 1, 2, s->f)) != 2) {
ast_log(LOG_WARNING, "Unable to write size: res=%d (%s)\n", res, strerror(errno));
return -1;
}
if ((res = fwrite(f->data.ptr, 1, f->datalen, s->f)) != f->datalen) {
ast_log(LOG_WARNING, "Unable to write frame: res=%d (%s)\n", res, strerror(errno));
return -1;
}
return 0;
}
| static int load_module | ( | void | ) | [static] |
Definition at line 140 of file format_g723.c.
References ast_format_register, AST_MODULE_LOAD_FAILURE, and AST_MODULE_LOAD_SUCCESS.
{
if (ast_format_register(&g723_1_f))
return AST_MODULE_LOAD_FAILURE;
return AST_MODULE_LOAD_SUCCESS;
}
| static int unload_module | ( | void | ) | [static] |
Definition at line 147 of file format_g723.c.
References ast_format_unregister(), and ast_format::name.
{
return ast_format_unregister(g723_1_f.name);
}
Variable Documentation
struct ast_module_info __MODULE_INFO_SECTION __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "G.723.1 Simple Timestamp File Format" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = 10, } [static] |
Definition at line 156 of file format_g723.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 156 of file format_g723.c.
struct ast_format g723_1_f [static] |
Definition at line 128 of file format_g723.c.
