Old-style G.723.1 frame/timestamp format. More...
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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 | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "G.723.1 Simple Timestamp File Format" , .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 | 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 39 of file format_g723.c.
Referenced by g723_read().
Function Documentation
| static void __reg_module | ( | void | ) | [static] |
Definition at line 170 of file format_g723.c.
| static void __unreg_module | ( | void | ) | [static] |
Definition at line 170 of file format_g723.c.
| static struct ast_frame* g723_read | ( | struct ast_filestream * | s, |
| int * | whennext | ||
| ) | [static, read] |
Definition at line 41 of file format_g723.c.
References AST_FORMAT_G723_1, 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, 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;
ast_format_set(&s->fr.subclass.format, AST_FORMAT_G723_1, 0);
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 114 of file format_g723.c.
{
return -1;
}
| static off_t g723_tell | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 136 of file format_g723.c.
{
return -1;
}
| static int g723_trunc | ( | struct ast_filestream * | fs | ) | [static] |
Definition at line 119 of file format_g723.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 g723 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 g723 filestream %p: %s\n", fs, strerror(errno));
return -1;
}
/* Truncate file to current length */
return ftruncate(fd, cur);
}
| static int g723_write | ( | struct ast_filestream * | s, |
| struct ast_frame * | f | ||
| ) | [static] |
Definition at line 79 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_subclass::format, ast_frame::frametype, ast_format::id, 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.format.id != 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 152 of file format_g723.c.
References ast_format_def_register, AST_FORMAT_G723_1, ast_format_set(), AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, and ast_format_def::format.
{
ast_format_set(&g723_1_f.format, AST_FORMAT_G723_1, 0);
if (ast_format_def_register(&g723_1_f))
return AST_MODULE_LOAD_FAILURE;
return AST_MODULE_LOAD_SUCCESS;
}
| static int unload_module | ( | void | ) | [static] |
Definition at line 161 of file format_g723.c.
References ast_format_def_unregister(), and ast_format_def::name.
{
return ast_format_def_unregister(g723_1_f.name);
}
Variable Documentation
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "G.723.1 Simple Timestamp File Format" , .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 170 of file format_g723.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 170 of file format_g723.c.
struct ast_format_def g723_1_f [static] |
Definition at line 141 of file format_g723.c.
