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"
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, void *data) |
static int | mp3play (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 __MODULE_INFO_SECTION | __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Silly MP3 Application" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, } |
static char * | app = "MP3Player" |
static struct ast_module_info * | ast_module_info = &__mod_info |
Silly application to play an MP3 file -- uses mpg123.
Definition in file app_mp3.c.
#define LOCAL_MPG_123 "/usr/local/bin/mpg123" |
static int load_module | ( | void | ) | [static] |
Definition at line 234 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, |
void * | data | ||
) | [static] |
Definition at line 120 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((char *)data, fds[1]); if (!strncasecmp((char *)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 = 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 | ( | char * | filename, |
int | fd | ||
) | [static] |
Definition at line 67 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 { /* 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 105 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 229 of file app_mp3.c.
References ast_unregister_application().
{ return ast_unregister_application(app); }
struct ast_module_info __MODULE_INFO_SECTION __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Silly MP3 Application" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, } [static] |
struct ast_module_info* ast_module_info = &__mod_info [static] |