261 lines
6.1 KiB
C
261 lines
6.1 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Silly application to play an MP3 file -- uses mpg123
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*
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* \ingroup applications
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*/
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#include <string.h>
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#include <stdio.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/time.h>
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/lock.h"
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#include "asterisk/file.h"
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#include "asterisk/logger.h"
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#include "asterisk/channel.h"
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#include "asterisk/frame.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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#include "asterisk/translate.h"
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#define LOCAL_MPG_123 "/usr/local/bin/mpg123"
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#define MPG_123 "/usr/bin/mpg123"
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static char *tdesc = "Silly MP3 Application";
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static char *app = "MP3Player";
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static char *synopsis = "Play an MP3 file or stream";
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static char *descrip =
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" MP3Player(location) Executes mpg123 to play the given location,\n"
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"which typically would be a filename or a URL. User can exit by pressing\n"
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"any key on the dialpad, or by hanging up.";
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STANDARD_LOCAL_USER;
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LOCAL_USER_DECL;
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static int mp3play(char *filename, int fd)
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{
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int res;
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int x;
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res = fork();
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if (res < 0)
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ast_log(LOG_WARNING, "Fork failed\n");
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if (res)
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return res;
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dup2(fd, STDOUT_FILENO);
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for (x=0;x<256;x++) {
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if (x != STDOUT_FILENO)
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close(x);
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}
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/* Execute mpg123, but buffer if it's a net connection */
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if (!strncasecmp(filename, "http://", 7)) {
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/* Most commonly installed in /usr/local/bin */
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execl(LOCAL_MPG_123, "mpg123", "-q", "-s", "-b", "1024", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
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/* But many places has it in /usr/bin */
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execl(MPG_123, "mpg123", "-q", "-s", "-b", "1024","-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
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/* As a last-ditch effort, try to use PATH */
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execlp("mpg123", "mpg123", "-q", "-s", "-b", "1024", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
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}
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else {
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/* Most commonly installed in /usr/local/bin */
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execl(MPG_123, "mpg123", "-q", "-s", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
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/* But many places has it in /usr/bin */
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execl(LOCAL_MPG_123, "mpg123", "-q", "-s", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
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/* As a last-ditch effort, try to use PATH */
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execlp("mpg123", "mpg123", "-q", "-s", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
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}
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ast_log(LOG_WARNING, "Execute of mpg123 failed\n");
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return -1;
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}
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static int timed_read(int fd, void *data, int datalen, int timeout)
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{
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int res;
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struct pollfd fds[1];
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fds[0].fd = fd;
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fds[0].events = POLLIN;
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res = poll(fds, 1, timeout);
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if (res < 1) {
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ast_log(LOG_NOTICE, "Poll timed out/errored out with %d\n", res);
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return -1;
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}
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return read(fd, data, datalen);
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}
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static int mp3_exec(struct ast_channel *chan, void *data)
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{
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int res=0;
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struct localuser *u;
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int fds[2];
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int ms = -1;
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int pid = -1;
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int owriteformat;
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int timeout = 2000;
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struct timeval next;
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struct ast_frame *f;
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struct myframe {
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struct ast_frame f;
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char offset[AST_FRIENDLY_OFFSET];
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short frdata[160];
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} myf;
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "MP3 Playback requires an argument (filename)\n");
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return -1;
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}
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LOCAL_USER_ADD(u);
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if (pipe(fds)) {
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ast_log(LOG_WARNING, "Unable to create pipe\n");
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LOCAL_USER_REMOVE(u);
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return -1;
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}
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ast_stopstream(chan);
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owriteformat = chan->writeformat;
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res = ast_set_write_format(chan, AST_FORMAT_SLINEAR);
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if (res < 0) {
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ast_log(LOG_WARNING, "Unable to set write format to signed linear\n");
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LOCAL_USER_REMOVE(u);
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return -1;
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}
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res = mp3play((char *)data, fds[1]);
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if (!strncasecmp((char *)data, "http://", 7)) {
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timeout = 10000;
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}
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/* Wait 1000 ms first */
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next = ast_tvnow();
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next.tv_sec += 1;
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if (res >= 0) {
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pid = res;
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/* Order is important -- there's almost always going to be mp3... we want to prioritize the
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user */
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for (;;) {
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ms = ast_tvdiff_ms(next, ast_tvnow());
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if (ms <= 0) {
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res = timed_read(fds[0], myf.frdata, sizeof(myf.frdata), timeout);
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if (res > 0) {
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myf.f.frametype = AST_FRAME_VOICE;
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myf.f.subclass = AST_FORMAT_SLINEAR;
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myf.f.datalen = res;
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myf.f.samples = res / 2;
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myf.f.mallocd = 0;
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myf.f.offset = AST_FRIENDLY_OFFSET;
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myf.f.src = __PRETTY_FUNCTION__;
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myf.f.delivery.tv_sec = 0;
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myf.f.delivery.tv_usec = 0;
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myf.f.data = myf.frdata;
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if (ast_write(chan, &myf.f) < 0) {
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res = -1;
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break;
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}
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} else {
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ast_log(LOG_DEBUG, "No more mp3\n");
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res = 0;
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break;
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}
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next = ast_tvadd(next, ast_samp2tv(myf.f.samples, 8000));
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} else {
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ms = ast_waitfor(chan, ms);
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if (ms < 0) {
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ast_log(LOG_DEBUG, "Hangup detected\n");
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res = -1;
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break;
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}
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if (ms) {
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f = ast_read(chan);
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if (!f) {
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ast_log(LOG_DEBUG, "Null frame == hangup() detected\n");
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res = -1;
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break;
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}
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if (f->frametype == AST_FRAME_DTMF) {
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ast_log(LOG_DEBUG, "User pressed a key\n");
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ast_frfree(f);
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res = 0;
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break;
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}
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ast_frfree(f);
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}
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}
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}
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}
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close(fds[0]);
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close(fds[1]);
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if (pid > -1)
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kill(pid, SIGKILL);
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if (!res && owriteformat)
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ast_set_write_format(chan, owriteformat);
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LOCAL_USER_REMOVE(u);
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return res;
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}
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int unload_module(void)
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{
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int res;
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res = ast_unregister_application(app);
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STANDARD_HANGUP_LOCALUSERS;
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return res;
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}
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int load_module(void)
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{
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return ast_register_application(app, mp3_exec, synopsis, descrip);
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}
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char *description(void)
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{
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return tdesc;
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}
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int usecount(void)
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{
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int res;
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STANDARD_USECOUNT(res);
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return res;
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}
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char *key()
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{
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return ASTERISK_GPL_KEY;
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}
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