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00028 #include "asterisk.h"
00029
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 238012 $")
00031
00032 #include <sys/time.h>
00033 #include <signal.h>
00034
00035 #include "asterisk/lock.h"
00036 #include "asterisk/file.h"
00037 #include "asterisk/channel.h"
00038 #include "asterisk/frame.h"
00039 #include "asterisk/pbx.h"
00040 #include "asterisk/module.h"
00041 #include "asterisk/translate.h"
00042 #include "asterisk/app.h"
00043
00044 #define LOCAL_MPG_123 "/usr/local/bin/mpg123"
00045 #define MPG_123 "/usr/bin/mpg123"
00046
00047 static char *app = "MP3Player";
00048
00049 static char *synopsis = "Play an MP3 file or stream";
00050
00051 static char *descrip =
00052 " MP3Player(location): Executes mpg123 to play the given location,\n"
00053 "which typically would be a filename or a URL. User can exit by pressing\n"
00054 "any key on the dialpad, or by hanging up.";
00055
00056
00057 static int mp3play(char *filename, int fd)
00058 {
00059 int res;
00060
00061 res = ast_safe_fork(0);
00062 if (res < 0)
00063 ast_log(LOG_WARNING, "Fork failed\n");
00064 if (res) {
00065 return res;
00066 }
00067 if (ast_opt_high_priority)
00068 ast_set_priority(0);
00069
00070 dup2(fd, STDOUT_FILENO);
00071 ast_close_fds_above_n(STDERR_FILENO);
00072
00073
00074 if (!strncasecmp(filename, "http://", 7)) {
00075
00076 execl(LOCAL_MPG_123, "mpg123", "-q", "-s", "-b", "1024", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
00077
00078 execl(MPG_123, "mpg123", "-q", "-s", "-b", "1024","-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
00079
00080 execlp("mpg123", "mpg123", "-q", "-s", "-b", "1024", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
00081 }
00082 else {
00083
00084 execl(MPG_123, "mpg123", "-q", "-s", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
00085
00086 execl(LOCAL_MPG_123, "mpg123", "-q", "-s", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
00087
00088 execlp("mpg123", "mpg123", "-q", "-s", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
00089 }
00090
00091 fprintf(stderr, "Execute of mpg123 failed\n");
00092 _exit(0);
00093 }
00094
00095 static int timed_read(int fd, void *data, int datalen, int timeout)
00096 {
00097 int res;
00098 struct pollfd fds[1];
00099 fds[0].fd = fd;
00100 fds[0].events = POLLIN;
00101 res = ast_poll(fds, 1, timeout);
00102 if (res < 1) {
00103 ast_log(LOG_NOTICE, "Poll timed out/errored out with %d\n", res);
00104 return -1;
00105 }
00106 return read(fd, data, datalen);
00107
00108 }
00109
00110 static int mp3_exec(struct ast_channel *chan, void *data)
00111 {
00112 int res=0;
00113 int fds[2];
00114 int ms = -1;
00115 int pid = -1;
00116 int owriteformat;
00117 int timeout = 2000;
00118 struct timeval next;
00119 struct ast_frame *f;
00120 struct myframe {
00121 struct ast_frame f;
00122 char offset[AST_FRIENDLY_OFFSET];
00123 short frdata[160];
00124 } myf = {
00125 .f = { 0, },
00126 };
00127
00128 if (ast_strlen_zero(data)) {
00129 ast_log(LOG_WARNING, "MP3 Playback requires an argument (filename)\n");
00130 return -1;
00131 }
00132
00133 if (pipe(fds)) {
00134 ast_log(LOG_WARNING, "Unable to create pipe\n");
00135 return -1;
00136 }
00137
00138 ast_stopstream(chan);
00139
00140 owriteformat = chan->writeformat;
00141 res = ast_set_write_format(chan, AST_FORMAT_SLINEAR);
00142 if (res < 0) {
00143 ast_log(LOG_WARNING, "Unable to set write format to signed linear\n");
00144 return -1;
00145 }
00146
00147 res = mp3play((char *)data, fds[1]);
00148 if (!strncasecmp((char *)data, "http://", 7)) {
00149 timeout = 10000;
00150 }
00151
00152 next = ast_tvnow();
00153 next.tv_sec += 1;
00154 if (res >= 0) {
00155 pid = res;
00156
00157
00158 for (;;) {
00159 ms = ast_tvdiff_ms(next, ast_tvnow());
00160 if (ms <= 0) {
00161 res = timed_read(fds[0], myf.frdata, sizeof(myf.frdata), timeout);
00162 if (res > 0) {
00163 myf.f.frametype = AST_FRAME_VOICE;
00164 myf.f.subclass = AST_FORMAT_SLINEAR;
00165 myf.f.datalen = res;
00166 myf.f.samples = res / 2;
00167 myf.f.mallocd = 0;
00168 myf.f.offset = AST_FRIENDLY_OFFSET;
00169 myf.f.src = __PRETTY_FUNCTION__;
00170 myf.f.delivery.tv_sec = 0;
00171 myf.f.delivery.tv_usec = 0;
00172 myf.f.data.ptr = myf.frdata;
00173 if (ast_write(chan, &myf.f) < 0) {
00174 res = -1;
00175 break;
00176 }
00177 } else {
00178 ast_debug(1, "No more mp3\n");
00179 res = 0;
00180 break;
00181 }
00182 next = ast_tvadd(next, ast_samp2tv(myf.f.samples, 8000));
00183 } else {
00184 ms = ast_waitfor(chan, ms);
00185 if (ms < 0) {
00186 ast_debug(1, "Hangup detected\n");
00187 res = -1;
00188 break;
00189 }
00190 if (ms) {
00191 f = ast_read(chan);
00192 if (!f) {
00193 ast_debug(1, "Null frame == hangup() detected\n");
00194 res = -1;
00195 break;
00196 }
00197 if (f->frametype == AST_FRAME_DTMF) {
00198 ast_debug(1, "User pressed a key\n");
00199 ast_frfree(f);
00200 res = 0;
00201 break;
00202 }
00203 ast_frfree(f);
00204 }
00205 }
00206 }
00207 }
00208 close(fds[0]);
00209 close(fds[1]);
00210
00211 if (pid > -1)
00212 kill(pid, SIGKILL);
00213 if (!res && owriteformat)
00214 ast_set_write_format(chan, owriteformat);
00215
00216 return res;
00217 }
00218
00219 static int unload_module(void)
00220 {
00221 return ast_unregister_application(app);
00222 }
00223
00224 static int load_module(void)
00225 {
00226 return ast_register_application(app, mp3_exec, synopsis, descrip);
00227 }
00228
00229 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Silly MP3 Application");