Fixes a few coding guideline violations: * Use of C99 comments * Opening brace on same line as function prototype ASTERISK-30163 #close Change-Id: I07771c4c89facd41ce8d323859f022ddbddf6ca7
313 lines
9.5 KiB
C
313 lines
9.5 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 1999 - 2005, Digium, Inc.
|
|
*
|
|
* Mark Spencer <markster@digium.com>
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
* at the top of the source tree.
|
|
*/
|
|
|
|
/*! \file
|
|
*
|
|
* \brief Silly application to play an MP3 file -- uses mpg123
|
|
*
|
|
* \author Mark Spencer <markster@digium.com>
|
|
*
|
|
* \note Add feature to play local M3U playlist file
|
|
* Vincent Li <mchun.li@gmail.com>
|
|
*
|
|
* \ingroup applications
|
|
*/
|
|
|
|
/*** MODULEINFO
|
|
<support_level>extended</support_level>
|
|
***/
|
|
|
|
#include "asterisk.h"
|
|
|
|
#include <sys/time.h>
|
|
#include <sys/types.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 "asterisk/format_cache.h"
|
|
|
|
#define LOCAL_MPG_123 "/usr/local/bin/mpg123"
|
|
#define MPG_123 "/usr/bin/mpg123"
|
|
|
|
/*** DOCUMENTATION
|
|
<application name="MP3Player" language="en_US">
|
|
<synopsis>
|
|
Play an MP3 file or M3U playlist file or stream.
|
|
</synopsis>
|
|
<syntax>
|
|
<parameter name="Location" required="true">
|
|
<para>Location of the file to be played.
|
|
(argument passed to mpg123)</para>
|
|
</parameter>
|
|
</syntax>
|
|
<description>
|
|
<para>Executes mpg123 to play the given location, which typically would be a mp3 filename
|
|
or m3u playlist filename or a URL. Please read https://en.wikipedia.org/wiki/M3U
|
|
to see what the M3U playlist file format is like.</para>
|
|
<para>Note that mpg123 does not support HTTPS, so use HTTP for web streams.</para>
|
|
<para>User can exit by pressing any key on the dialpad, or by hanging up.</para>
|
|
<example title="Play an MP3 playlist">
|
|
exten => 1234,1,MP3Player(/var/lib/asterisk/playlist.m3u)
|
|
</example>
|
|
<para>This application does not automatically answer and should be preceeded by an
|
|
application such as Answer() or Progress().</para>
|
|
</description>
|
|
</application>
|
|
|
|
***/
|
|
static char *app = "MP3Player";
|
|
|
|
static int mp3play(const char *filename, unsigned int sampling_rate, int fd)
|
|
{
|
|
int res;
|
|
char sampling_rate_str[8];
|
|
|
|
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);
|
|
|
|
snprintf(sampling_rate_str, 8, "%u", sampling_rate);
|
|
|
|
/* Execute mpg123, but buffer if it's a net connection */
|
|
if (!strncasecmp(filename, "http://", 7) && strstr(filename, ".m3u")) {
|
|
char buffer_size_str[8];
|
|
snprintf(buffer_size_str, 8, "%u", (int) 0.5*2*sampling_rate/1000); /* 0.5 seconds for a live stream */
|
|
/* Most commonly installed in /usr/local/bin */
|
|
execl(LOCAL_MPG_123, "mpg123", "-e", "s16", "-q", "-s", "-b", buffer_size_str, "-f", "8192", "--mono", "-r", sampling_rate_str, "-@", filename, (char *)NULL);
|
|
/* But many places has it in /usr/bin */
|
|
execl(MPG_123, "mpg123", "-e", "s16", "-q", "-s", "-b", buffer_size_str, "-f", "8192", "--mono", "-r", sampling_rate_str, "-@", filename, (char *)NULL);
|
|
/* As a last-ditch effort, try to use PATH */
|
|
execlp("mpg123", "mpg123", "-e", "s16", "-q", "-s", "-b", buffer_size_str, "-f", "8192", "--mono", "-r", sampling_rate_str, "-@", filename, (char *)NULL);
|
|
}
|
|
else if (!strncasecmp(filename, "http://", 7)) {
|
|
char buffer_size_str[8];
|
|
snprintf(buffer_size_str, 8, "%u", 6*2*sampling_rate/1000); /* 6 seconds for a remote MP3 file */
|
|
/* Most commonly installed in /usr/local/bin */
|
|
execl(LOCAL_MPG_123, "mpg123", "-e", "s16", "-q", "-s", "-b", buffer_size_str, "-f", "8192", "--mono", "-r", sampling_rate_str, filename, (char *)NULL);
|
|
/* But many places has it in /usr/bin */
|
|
execl(MPG_123, "mpg123", "-e", "s16", "-q", "-s", "-b", buffer_size_str, "-f", "8192", "--mono", "-r", sampling_rate_str, filename, (char *)NULL);
|
|
/* As a last-ditch effort, try to use PATH */
|
|
execlp("mpg123", "mpg123", "-e", "s16", "-q", "-s", "-b", buffer_size_str, "-f", "8192", "--mono", "-r", sampling_rate_str, filename, (char *)NULL);
|
|
}
|
|
else if (strstr(filename, ".m3u")) {
|
|
/* Most commonly installed in /usr/local/bin */
|
|
execl(LOCAL_MPG_123, "mpg123", "-e", "s16", "-q", "-z", "-s", "-f", "8192", "--mono", "-r", sampling_rate_str, "-@", filename, (char *)NULL);
|
|
/* But many places has it in /usr/bin */
|
|
execl(MPG_123, "mpg123", "-e", "s16", "-q", "-z", "-s", "-f", "8192", "--mono", "-r", sampling_rate_str, "-@", filename, (char *)NULL);
|
|
/* As a last-ditch effort, try to use PATH */
|
|
execlp("mpg123", "mpg123", "-e", "s16", "-q", "-z", "-s", "-f", "8192", "--mono", "-r", sampling_rate_str, "-@", filename, (char *)NULL);
|
|
}
|
|
else {
|
|
/* Most commonly installed in /usr/local/bin */
|
|
execl(MPG_123, "mpg123", "-e", "s16", "-q", "-s", "-f", "8192", "--mono", "-r", sampling_rate_str, filename, (char *)NULL);
|
|
/* But many places has it in /usr/bin */
|
|
execl(LOCAL_MPG_123, "mpg123", "-e", "s16", "-q", "-s", "-f", "8192", "--mono", "-r", sampling_rate_str, filename, (char *)NULL);
|
|
/* As a last-ditch effort, try to use PATH */
|
|
execlp("mpg123", "mpg123", "-e", "s16", "-q", "-s", "-f", "8192", "--mono", "-r", sampling_rate_str, 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, int pid)
|
|
{
|
|
int res;
|
|
int i;
|
|
struct pollfd fds[1];
|
|
fds[0].fd = fd;
|
|
fds[0].events = POLLIN;
|
|
for (i = 0; i < timeout; i++) {
|
|
res = ast_poll(fds, 1, 1000);
|
|
if (res > 0) {
|
|
break;
|
|
} else if (res == 0) {
|
|
/* is mpg123 still running? */
|
|
kill(pid, 0);
|
|
if (errno == ESRCH) {
|
|
return -1;
|
|
}
|
|
} else {
|
|
ast_log(LOG_NOTICE, "error polling mpg123: %s\n", strerror(errno));
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (i == timeout) {
|
|
ast_log(LOG_NOTICE, "Poll timed out.\n");
|
|
return -1;
|
|
}
|
|
|
|
return read(fd, data, datalen);
|
|
|
|
}
|
|
|
|
static int mp3_exec(struct ast_channel *chan, const char *data)
|
|
{
|
|
int res=0;
|
|
int fds[2];
|
|
int ms = -1;
|
|
int pid = -1;
|
|
RAII_VAR(struct ast_format *, owriteformat, NULL, ao2_cleanup);
|
|
int timeout = 2;
|
|
int startedmp3 = 0;
|
|
struct timeval next;
|
|
struct ast_frame *f;
|
|
struct myframe {
|
|
struct ast_frame f;
|
|
char offset[AST_FRIENDLY_OFFSET];
|
|
short frdata[160];
|
|
} myf = {
|
|
.f = { 0, },
|
|
};
|
|
struct ast_format * native_format;
|
|
unsigned int sampling_rate;
|
|
struct ast_format * write_format;
|
|
|
|
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);
|
|
|
|
native_format = ast_format_cap_get_format(ast_channel_nativeformats(chan), 0);
|
|
sampling_rate = ast_format_get_sample_rate(native_format);
|
|
write_format = ast_format_cache_get_slin_by_rate(sampling_rate);
|
|
|
|
owriteformat = ao2_bump(ast_channel_writeformat(chan));
|
|
res = ast_set_write_format(chan, write_format);
|
|
if (res < 0) {
|
|
ast_log(LOG_WARNING, "Unable to set write format to signed linear\n");
|
|
return -1;
|
|
}
|
|
|
|
myf.f.frametype = AST_FRAME_VOICE;
|
|
myf.f.subclass.format = write_format;
|
|
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;
|
|
|
|
res = mp3play(data, sampling_rate, fds[1]);
|
|
if (!strncasecmp(data, "http://", 7)) {
|
|
timeout = 10;
|
|
}
|
|
/* 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, pid);
|
|
if (res > 0) {
|
|
myf.f.datalen = res;
|
|
myf.f.samples = res / 2;
|
|
startedmp3 = 1;
|
|
if (ast_write(chan, &myf.f) < 0) {
|
|
res = -1;
|
|
break;
|
|
}
|
|
} else {
|
|
ast_debug(1, "No more mp3\n");
|
|
if (!startedmp3) { /* we couldn't do anything, which means this stream doesn't work */
|
|
if (!strncasecmp(data, "https://", 8)) {
|
|
ast_log(LOG_WARNING, "%s() does not support HTTPS streams. Use HTTP instead.\n", app);
|
|
}
|
|
ast_log(LOG_WARNING, "MP3 stream '%s' is broken or nonexistent\n", data);
|
|
}
|
|
res = 0;
|
|
break;
|
|
}
|
|
next = ast_tvadd(next, ast_samp2tv(myf.f.samples, sampling_rate));
|
|
} 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);
|
|
|
|
ast_frfree(&myf.f);
|
|
|
|
return res;
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
return ast_unregister_application(app);
|
|
}
|
|
|
|
static int load_module(void)
|
|
{
|
|
return ast_register_application_xml(app, mp3_exec);
|
|
}
|
|
|
|
AST_MODULE_INFO_STANDARD_EXTENDED(ASTERISK_GPL_KEY, "Silly MP3 Application");
|