https://origsvn.digium.com/svn/asterisk/branches/10 ................ r336717 | jrose | 2011-09-19 15:16:23 -0500 (Mon, 19 Sep 2011) | 14 lines Merged revisions 336716 via svnmerge from https://origsvn.digium.com/svn/asterisk/branches/1.8 ........ r336716 | jrose | 2011-09-19 15:07:36 -0500 (Mon, 19 Sep 2011) | 7 lines Document applications that play audio and do not answer unanswered calls. This patch is part of an effort to document early media and its usage. If you are interested in contributing to this documentation effort, there are probably other applications worth documenting as well as an Asterisk wiki article at https://wiki.asterisk.org/wiki/display/AST/Early+Media+and+the+Progress+Application ........ ................ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@336732 65c4cc65-6c06-0410-ace0-fbb531ad65f3
261 lines
7.2 KiB
C
261 lines
7.2 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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* \author Mark Spencer <markster@digium.com>
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*
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* \note Add feature to play local M3U playlist file
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* Vincent Li <mchun.li@gmail.com>
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*
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* \ingroup applications
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*/
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/*** MODULEINFO
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<support_level>extended</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <sys/time.h>
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#include <signal.h>
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#include "asterisk/lock.h"
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#include "asterisk/file.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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#include "asterisk/app.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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/*** DOCUMENTATION
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<application name="MP3Player" language="en_US">
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<synopsis>
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Play an MP3 file or M3U playlist file or stream.
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</synopsis>
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<syntax>
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<parameter name="Location" required="true">
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<para>Location of the file to be played.
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(argument passed to mpg123)</para>
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</parameter>
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</syntax>
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<description>
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<para>Executes mpg123 to play the given location, which typically would be a mp3 filename
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or m3u playlist filename or a URL. Please read http://en.wikipedia.org/wiki/M3U
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to see how M3U playlist file format is like, Example usage would be
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exten => 1234,1,MP3Player(/var/lib/asterisk/playlist.m3u)
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User can exit by pressing any key on the dialpad, or by hanging up.</para>
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<para>This application does not automatically answer and should be preceeded by an
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application such as Answer() or Progress().</para>
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</description>
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</application>
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***/
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static char *app = "MP3Player";
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static int mp3play(const char *filename, int fd)
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{
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int res;
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res = ast_safe_fork(0);
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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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}
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if (ast_opt_high_priority)
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ast_set_priority(0);
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dup2(fd, STDOUT_FILENO);
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ast_close_fds_above_n(STDERR_FILENO);
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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 if (strstr(filename, ".m3u")) {
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/* Most commonly installed in /usr/local/bin */
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execl(LOCAL_MPG_123, "mpg123", "-q", "-z", "-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", "-z", "-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", "-z", "-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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/* Can't use ast_log since FD's are closed */
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fprintf(stderr, "Execute of mpg123 failed\n");
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_exit(0);
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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 = ast_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, const char *data)
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{
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int res=0;
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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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struct ast_format 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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.f = { 0, },
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};
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ast_format_clear(&owriteformat);
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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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if (pipe(fds)) {
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ast_log(LOG_WARNING, "Unable to create pipe\n");
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return -1;
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}
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ast_stopstream(chan);
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ast_format_copy(&owriteformat, &chan->writeformat);
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res = ast_set_write_format_by_id(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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return -1;
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}
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res = mp3play(data, fds[1]);
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if (!strncasecmp(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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ast_format_set(&myf.f.subclass.format, AST_FORMAT_SLINEAR, 0);
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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.ptr = 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_debug(1, "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_debug(1, "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_debug(1, "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_debug(1, "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.id)
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ast_set_write_format(chan, &owriteformat);
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return res;
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}
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static int unload_module(void)
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{
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return ast_unregister_application(app);
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}
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static int load_module(void)
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{
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return ast_register_application_xml(app, mp3_exec);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Silly MP3 Application");
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