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Diffstat (limited to 'trunk/apps/app_mp3.c')
-rw-r--r-- | trunk/apps/app_mp3.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/trunk/apps/app_mp3.c b/trunk/apps/app_mp3.c new file mode 100644 index 000000000..d2f2f5c0e --- /dev/null +++ b/trunk/apps/app_mp3.c @@ -0,0 +1,235 @@ +/* + * 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> + * + * \ingroup applications + */ + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#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" + +#define LOCAL_MPG_123 "/usr/local/bin/mpg123" +#define MPG_123 "/usr/bin/mpg123" + +static char *app = "MP3Player"; + +static char *synopsis = "Play an MP3 file or stream"; + +static char *descrip = +" MP3Player(location): Executes mpg123 to play the given location,\n" +"which typically would be a filename or a URL. User can exit by pressing\n" +"any key on the dialpad, or by hanging up."; + + +static int mp3play(char *filename, int fd) +{ + int res; + int x; + sigset_t fullset, oldset; + + sigfillset(&fullset); + pthread_sigmask(SIG_BLOCK, &fullset, &oldset); + + res = fork(); + if (res < 0) + ast_log(LOG_WARNING, "Fork failed\n"); + if (res) { + pthread_sigmask(SIG_SETMASK, &oldset, NULL); + return res; + } + if (ast_opt_high_priority) + ast_set_priority(0); + signal(SIGPIPE, SIG_DFL); + pthread_sigmask(SIG_UNBLOCK, &fullset, NULL); + + dup2(fd, STDOUT_FILENO); + for (x=STDERR_FILENO + 1;x<256;x++) { + if (x != STDOUT_FILENO) + close(x); + } + /* 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); + } + ast_log(LOG_WARNING, "Execute of mpg123 failed\n"); + _exit(0); +} + +static int timed_read(int fd, void *data, int datalen, int timeout) +{ + int res; + struct pollfd fds[1]; + fds[0].fd = fd; + fds[0].events = POLLIN; + res = 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 mp3_exec(struct ast_channel *chan, void *data) +{ + 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; + + 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 = 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 unload_module(void) +{ + return ast_unregister_application(app); +} + +static int load_module(void) +{ + return ast_register_application(app, mp3_exec, synopsis, descrip); +} + +AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Silly MP3 Application"); |