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Diffstat (limited to 'trunk/apps/app_nbscat.c')
| -rw-r--r-- | trunk/apps/app_nbscat.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/trunk/apps/app_nbscat.c b/trunk/apps/app_nbscat.c new file mode 100644 index 000000000..4e7203319 --- /dev/null +++ b/trunk/apps/app_nbscat.c @@ -0,0 +1,218 @@ +/* + * 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 NBScat file -- uses nbscat8k + * + * \author Mark Spencer <markster@digium.com> + * + * \ingroup applications + */ + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include <fcntl.h> +#include <sys/time.h> +#include <sys/socket.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_NBSCAT "/usr/local/bin/nbscat8k" +#define NBSCAT "/usr/bin/nbscat8k" + +#ifndef AF_LOCAL +#define AF_LOCAL AF_UNIX +#endif + +static char *app = "NBScat"; + +static char *synopsis = "Play an NBS local stream"; + +static char *descrip = +" NBScat(): Executes nbscat to listen to the local NBS stream.\n" +"User can exit by pressing any key.\n"; + + +static int NBScatplay(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; + } + signal(SIGPIPE, SIG_DFL); + pthread_sigmask(SIG_UNBLOCK, &fullset, NULL); + + if (ast_opt_high_priority) + ast_set_priority(0); + + dup2(fd, STDOUT_FILENO); + for (x = STDERR_FILENO + 1; x < 1024; x++) { + if (x != STDOUT_FILENO) + close(x); + } + /* Most commonly installed in /usr/local/bin */ + execl(NBSCAT, "nbscat8k", "-d", (char *)NULL); + execl(LOCAL_NBSCAT, "nbscat8k", "-d", (char *)NULL); + ast_log(LOG_WARNING, "Execute of nbscat8k failed\n"); + _exit(0); +} + +static int timed_read(int fd, void *data, int datalen) +{ + int res; + struct pollfd fds[1]; + fds[0].fd = fd; + fds[0].events = POLLIN; + res = poll(fds, 1, 2000); + if (res < 1) { + ast_log(LOG_NOTICE, "Selected timed out/errored out with %d\n", res); + return -1; + } + return read(fd, data, datalen); + +} + +static int NBScat_exec(struct ast_channel *chan, void *data) +{ + int res=0; + int fds[2]; + int ms = -1; + int pid = -1; + int owriteformat; + struct timeval next; + struct ast_frame *f; + struct myframe { + struct ast_frame f; + char offset[AST_FRIENDLY_OFFSET]; + short frdata[160]; + } myf; + + if (socketpair(AF_LOCAL, SOCK_STREAM, 0, fds)) { + ast_log(LOG_WARNING, "Unable to create socketpair\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 = NBScatplay(fds[1]); + /* 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)); + 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, NBScat_exec, synopsis, descrip); +} + +AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Silly NBS Stream Application"); |