app_mp3.c File Reference
Silly application to play an MP3 file -- uses mpg123. More...
#include "asterisk.h"#include <sys/time.h>#include <signal.h>#include "asterisk/lock.h"#include "asterisk/file.h"#include "asterisk/channel.h"#include "asterisk/frame.h"#include "asterisk/pbx.h"#include "asterisk/module.h"#include "asterisk/translate.h"#include "asterisk/app.h"
Include dependency graph for app_mp3.c:
Go to the source code of this file.
Defines | |
| #define | LOCAL_MPG_123 "/usr/local/bin/mpg123" |
| #define | MPG_123 "/usr/bin/mpg123" |
Functions | |
| static void | __reg_module (void) |
| static void | __unreg_module (void) |
| static int | load_module (void) |
| static int | mp3_exec (struct ast_channel *chan, const char *data) |
| static int | mp3play (const char *filename, int fd) |
| static int | timed_read (int fd, void *data, int datalen, int timeout) |
| static int | unload_module (void) |
Variables | |
| static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Silly MP3 Application" , .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_DEFAULT, } |
| static char * | app = "MP3Player" |
| static struct ast_module_info * | ast_module_info = &__mod_info |
Detailed Description
Silly application to play an MP3 file -- uses mpg123.
- Note:
- Add feature to play local M3U playlist file Vincent Li <mchun.li@gmail.com>
Definition in file app_mp3.c.
Define Documentation
| #define LOCAL_MPG_123 "/usr/local/bin/mpg123" |
Function Documentation
| static int load_module | ( | void | ) | [static] |
Definition at line 254 of file app_mp3.c.
References ast_register_application_xml, and mp3_exec().
{
return ast_register_application_xml(app, mp3_exec);
}
| static int mp3_exec | ( | struct ast_channel * | chan, |
| const char * | data | ||
| ) | [static] |
Definition at line 140 of file app_mp3.c.
References ast_debug, AST_FORMAT_SLINEAR, AST_FRAME_DTMF, AST_FRAME_VOICE, ast_frfree, AST_FRIENDLY_OFFSET, ast_log(), ast_read(), ast_samp2tv(), ast_set_write_format(), ast_stopstream(), ast_strlen_zero(), ast_tvadd(), ast_tvdiff_ms(), ast_tvnow(), ast_waitfor(), ast_write(), f, ast_frame::frametype, LOG_WARNING, mp3play(), ast_frame::offset, timed_read(), and ast_channel::writeformat.
Referenced by load_module().
{
int res=0;
int fds[2];
int ms = -1;
int pid = -1;
int owriteformat;
int timeout = 2000;
struct timeval next;
struct ast_frame *f;
struct myframe {
struct ast_frame f;
char offset[AST_FRIENDLY_OFFSET];
short frdata[160];
} myf = {
.f = { 0, },
};
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "MP3 Playback requires an argument (filename)\n");
return -1;
}
if (pipe(fds)) {
ast_log(LOG_WARNING, "Unable to create pipe\n");
return -1;
}
ast_stopstream(chan);
owriteformat = chan->writeformat;
res = ast_set_write_format(chan, AST_FORMAT_SLINEAR);
if (res < 0) {
ast_log(LOG_WARNING, "Unable to set write format to signed linear\n");
return -1;
}
res = mp3play(data, fds[1]);
if (!strncasecmp(data, "http://", 7)) {
timeout = 10000;
}
/* Wait 1000 ms first */
next = ast_tvnow();
next.tv_sec += 1;
if (res >= 0) {
pid = res;
/* Order is important -- there's almost always going to be mp3... we want to prioritize the
user */
for (;;) {
ms = ast_tvdiff_ms(next, ast_tvnow());
if (ms <= 0) {
res = timed_read(fds[0], myf.frdata, sizeof(myf.frdata), timeout);
if (res > 0) {
myf.f.frametype = AST_FRAME_VOICE;
myf.f.subclass.codec = AST_FORMAT_SLINEAR;
myf.f.datalen = res;
myf.f.samples = res / 2;
myf.f.mallocd = 0;
myf.f.offset = AST_FRIENDLY_OFFSET;
myf.f.src = __PRETTY_FUNCTION__;
myf.f.delivery.tv_sec = 0;
myf.f.delivery.tv_usec = 0;
myf.f.data.ptr = myf.frdata;
if (ast_write(chan, &myf.f) < 0) {
res = -1;
break;
}
} else {
ast_debug(1, "No more mp3\n");
res = 0;
break;
}
next = ast_tvadd(next, ast_samp2tv(myf.f.samples, 8000));
} else {
ms = ast_waitfor(chan, ms);
if (ms < 0) {
ast_debug(1, "Hangup detected\n");
res = -1;
break;
}
if (ms) {
f = ast_read(chan);
if (!f) {
ast_debug(1, "Null frame == hangup() detected\n");
res = -1;
break;
}
if (f->frametype == AST_FRAME_DTMF) {
ast_debug(1, "User pressed a key\n");
ast_frfree(f);
res = 0;
break;
}
ast_frfree(f);
}
}
}
}
close(fds[0]);
close(fds[1]);
if (pid > -1)
kill(pid, SIGKILL);
if (!res && owriteformat)
ast_set_write_format(chan, owriteformat);
return res;
}
| static int mp3play | ( | const char * | filename, |
| int | fd | ||
| ) | [static] |
Definition at line 79 of file app_mp3.c.
References ast_close_fds_above_n(), ast_log(), ast_opt_high_priority, ast_safe_fork(), ast_set_priority(), LOCAL_MPG_123, LOG_WARNING, and MPG_123.
Referenced by mp3_exec().
{
int res;
res = ast_safe_fork(0);
if (res < 0)
ast_log(LOG_WARNING, "Fork failed\n");
if (res) {
return res;
}
if (ast_opt_high_priority)
ast_set_priority(0);
dup2(fd, STDOUT_FILENO);
ast_close_fds_above_n(STDERR_FILENO);
/* Execute mpg123, but buffer if it's a net connection */
if (!strncasecmp(filename, "http://", 7)) {
/* Most commonly installed in /usr/local/bin */
execl(LOCAL_MPG_123, "mpg123", "-q", "-s", "-b", "1024", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
/* But many places has it in /usr/bin */
execl(MPG_123, "mpg123", "-q", "-s", "-b", "1024","-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
/* As a last-ditch effort, try to use PATH */
execlp("mpg123", "mpg123", "-q", "-s", "-b", "1024", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
}
else if (strstr(filename, ".m3u")) {
/* Most commonly installed in /usr/local/bin */
execl(LOCAL_MPG_123, "mpg123", "-q", "-z", "-s", "-b", "1024", "-f", "8192", "--mono", "-r", "8000", "-@", filename, (char *)NULL);
/* But many places has it in /usr/bin */
execl(MPG_123, "mpg123", "-q", "-z", "-s", "-b", "1024","-f", "8192", "--mono", "-r", "8000", "-@", filename, (char *)NULL);
/* As a last-ditch effort, try to use PATH */
execlp("mpg123", "mpg123", "-q", "-z", "-s", "-b", "1024", "-f", "8192", "--mono", "-r", "8000", "-@", filename, (char *)NULL);
}
else {
/* Most commonly installed in /usr/local/bin */
execl(MPG_123, "mpg123", "-q", "-s", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
/* But many places has it in /usr/bin */
execl(LOCAL_MPG_123, "mpg123", "-q", "-s", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
/* As a last-ditch effort, try to use PATH */
execlp("mpg123", "mpg123", "-q", "-s", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
}
/* Can't use ast_log since FD's are closed */
fprintf(stderr, "Execute of mpg123 failed\n");
_exit(0);
}
| static int timed_read | ( | int | fd, |
| void * | data, | ||
| int | datalen, | ||
| int | timeout | ||
| ) | [static] |
Definition at line 125 of file app_mp3.c.
References ast_log(), ast_poll, and LOG_NOTICE.
Referenced by mp3_exec().
{
int res;
struct pollfd fds[1];
fds[0].fd = fd;
fds[0].events = POLLIN;
res = ast_poll(fds, 1, timeout);
if (res < 1) {
ast_log(LOG_NOTICE, "Poll timed out/errored out with %d\n", res);
return -1;
}
return read(fd, data, datalen);
}
| static int unload_module | ( | void | ) | [static] |
Definition at line 249 of file app_mp3.c.
References ast_unregister_application().
{
return ast_unregister_application(app);
}
Variable Documentation
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Silly MP3 Application" , .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_DEFAULT, } [static] |
struct ast_module_info* ast_module_info = &__mod_info [static] |
