Save to raw, headerless iLBC data. More...
#include "asterisk.h"#include "asterisk/mod_format.h"#include "asterisk/module.h"#include "asterisk/endian.h"
Go to the source code of this file.
Defines | |
| #define | ILBC_BUF_SIZE 50 /* One Real iLBC Frame */ |
| #define | ILBC_SAMPLES 240 |
Functions | |
| static void | __reg_module (void) |
| static void | __unreg_module (void) |
| 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_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Raw iLBC data" , .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 = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_APP_DEPEND } |
| static struct ast_module_info * | ast_module_info = &__mod_info |
| static struct ast_format_def | ilbc_f |
Detailed Description
Define Documentation
| #define ILBC_BUF_SIZE 50 /* One Real iLBC Frame */ |
Definition at line 44 of file format_ilbc.c.
Referenced by ilbc_read(), ilbc_seek(), and ilbc_tell().
| #define ILBC_SAMPLES 240 |
Definition at line 45 of file format_ilbc.c.
Referenced by ilbc_read(), ilbc_seek(), and ilbc_tell().
Function Documentation
| static void __reg_module | ( | void | ) | [static] |
Definition at line 163 of file format_ilbc.c.
| static void __unreg_module | ( | void | ) | [static] |
Definition at line 163 of file format_ilbc.c.
| static struct ast_frame* ilbc_read | ( | struct ast_filestream * | s, |
| int * | whennext | ||
| ) | [static, read] |
Definition at line 47 of file format_ilbc.c.
References AST_FORMAT_ILBC, ast_format_set(), 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_frame_subclass::format, ast_filestream::fr, ast_frame::frametype, ILBC_BUF_SIZE, ILBC_SAMPLES, LOG_WARNING, ast_frame::mallocd, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.
{
int res;
/* Send a frame from the file to the appropriate channel */
s->fr.frametype = AST_FRAME_VOICE;
ast_format_set(&s->fr.subclass.format, AST_FORMAT_ILBC, 0);
s->fr.mallocd = 0;
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, ILBC_BUF_SIZE);
if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
if (res)
ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
return NULL;
}
*whennext = s->fr.samples = ILBC_SAMPLES;
return &s->fr;
}
| static int ilbc_seek | ( | struct ast_filestream * | fs, |
| off_t | sample_offset, | ||
| int | whence | ||
| ) | [static] |
Definition at line 86 of file format_ilbc.c.
References ast_filestream::f, ILBC_BUF_SIZE, ILBC_SAMPLES, ast_frame::offset, and SEEK_FORCECUR.
{
long bytes;
off_t min,cur,max,offset=0;
min = 0;
cur = ftello(fs->f);
fseeko(fs->f, 0, SEEK_END);
max = ftello(fs->f);
bytes = ILBC_BUF_SIZE * (sample_offset / ILBC_SAMPLES);
if (whence == SEEK_SET)
offset = bytes;
else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
offset = cur + bytes;
else if (whence == SEEK_END)
offset = max - bytes;
if (whence != SEEK_FORCECUR) {
offset = (offset > max)?max:offset;
}
/* protect against seeking beyond begining. */
offset = (offset < min)?min:offset;
if (fseeko(fs->f, offset, SEEK_SET) < 0)
return -1;
return 0;
}
| 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 ast_frame::offset.
{
off_t offset = ftello(fs->f);
return (offset/ILBC_BUF_SIZE)*ILBC_SAMPLES;
}
| static int ilbc_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 112 of file format_ilbc.c.
References ast_log(), AST_LOG_WARNING, errno, and ast_filestream::f.
{
int fd;
off_t cur;
if ((fd = fileno(fs->f)) < 0) {
ast_log(AST_LOG_WARNING, "Unable to determine file descriptor for iLBC filestream %p: %s\n", fs, strerror(errno));
return -1;
}
if ((cur = ftello(fs->f)) < 0) {
ast_log(AST_LOG_WARNING, "Unable to determine current position in iLBC filestream %p: %s\n", fs, strerror(errno));
return -1;
}
/* Truncate file to current length */
return ftruncate(fd, cur);
}
| static int ilbc_write | ( | struct ast_filestream * | fs, |
| struct ast_frame * | f | ||
| ) | [static] |
Definition at line 64 of file format_ilbc.c.
References AST_FORMAT_ILBC, AST_FRAME_VOICE, ast_getformatname(), ast_log(), ast_frame::data, ast_frame::datalen, errno, ast_filestream::f, ast_frame_subclass::format, ast_frame::frametype, ast_format::id, LOG_WARNING, ast_frame::ptr, and ast_frame::subclass.
{
int res;
if (f->frametype != AST_FRAME_VOICE) {
ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
return -1;
}
if (f->subclass.format.id != AST_FORMAT_ILBC) {
ast_log(LOG_WARNING, "Asked to write non-iLBC frame (%s)!\n", ast_getformatname(&f->subclass.format));
return -1;
}
if (f->datalen % 50) {
ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 50\n", f->datalen);
return -1;
}
if ((res = fwrite(f->data.ptr, 1, f->datalen, fs->f)) != f->datalen) {
ast_log(LOG_WARNING, "Bad write (%d/50): %s\n", res, strerror(errno));
return -1;
}
return 0;
}
| static int load_module | ( | void | ) | [static] |
Definition at line 146 of file format_ilbc.c.
References ast_format_def_register, AST_FORMAT_ILBC, ast_format_set(), AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and ast_format_def::format.
{
ast_format_set(&ilbc_f.format, AST_FORMAT_ILBC, 0);
if (ast_format_def_register(&ilbc_f))
return AST_MODULE_LOAD_FAILURE;
return AST_MODULE_LOAD_SUCCESS;
}
| static int unload_module | ( | void | ) | [static] |
Definition at line 154 of file format_ilbc.c.
References ast_format_def_unregister(), and ast_format_def::name.
{
return ast_format_def_unregister(ilbc_f.name);
}
Variable Documentation
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Raw iLBC data" , .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 = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_APP_DEPEND } [static] |
Definition at line 163 of file format_ilbc.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 163 of file format_ilbc.c.
struct ast_format_def ilbc_f [static] |
Definition at line 135 of file format_ilbc.c.
