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00028 #include "asterisk.h"
00029
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 182946 $")
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
00126 if (ast_strlen_zero(data)) {
00127 ast_log(LOG_WARNING, "MP3 Playback requires an argument (filename)\n");
00128 return -1;
00129 }
00130
00131 if (pipe(fds)) {
00132 ast_log(LOG_WARNING, "Unable to create pipe\n");
00133 return -1;
00134 }
00135
00136 ast_stopstream(chan);
00137
00138 owriteformat = chan->writeformat;
00139 res = ast_set_write_format(chan, AST_FORMAT_SLINEAR);
00140 if (res < 0) {
00141 ast_log(LOG_WARNING, "Unable to set write format to signed linear\n");
00142 return -1;
00143 }
00144
00145 res = mp3play((char *)data, fds[1]);
00146 if (!strncasecmp((char *)data, "http://", 7)) {
00147 timeout = 10000;
00148 }
00149
00150 next = ast_tvnow();
00151 next.tv_sec += 1;
00152 if (res >= 0) {
00153 pid = res;
00154
00155
00156 for (;;) {
00157 ms = ast_tvdiff_ms(next, ast_tvnow());
00158 if (ms <= 0) {
00159 res = timed_read(fds[0], myf.frdata, sizeof(myf.frdata), timeout);
00160 if (res > 0) {
00161 myf.f.frametype = AST_FRAME_VOICE;
00162 myf.f.subclass = AST_FORMAT_SLINEAR;
00163 myf.f.datalen = res;
00164 myf.f.samples = res / 2;
00165 myf.f.mallocd = 0;
00166 myf.f.offset = AST_FRIENDLY_OFFSET;
00167 myf.f.src = __PRETTY_FUNCTION__;
00168 myf.f.delivery.tv_sec = 0;
00169 myf.f.delivery.tv_usec = 0;
00170 myf.f.data.ptr = myf.frdata;
00171 if (ast_write(chan, &myf.f) < 0) {
00172 res = -1;
00173 break;
00174 }
00175 } else {
00176 ast_debug(1, "No more mp3\n");
00177 res = 0;
00178 break;
00179 }
00180 next = ast_tvadd(next, ast_samp2tv(myf.f.samples, 8000));
00181 } else {
00182 ms = ast_waitfor(chan, ms);
00183 if (ms < 0) {
00184 ast_debug(1, "Hangup detected\n");
00185 res = -1;
00186 break;
00187 }
00188 if (ms) {
00189 f = ast_read(chan);
00190 if (!f) {
00191 ast_debug(1, "Null frame == hangup() detected\n");
00192 res = -1;
00193 break;
00194 }
00195 if (f->frametype == AST_FRAME_DTMF) {
00196 ast_debug(1, "User pressed a key\n");
00197 ast_frfree(f);
00198 res = 0;
00199 break;
00200 }
00201 ast_frfree(f);
00202 }
00203 }
00204 }
00205 }
00206 close(fds[0]);
00207 close(fds[1]);
00208
00209 if (pid > -1)
00210 kill(pid, SIGKILL);
00211 if (!res && owriteformat)
00212 ast_set_write_format(chan, owriteformat);
00213
00214 return res;
00215 }
00216
00217 static int unload_module(void)
00218 {
00219 return ast_unregister_application(app);
00220 }
00221
00222 static int load_module(void)
00223 {
00224 return ast_register_application(app, mp3_exec, synopsis, descrip);
00225 }
00226
00227 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Silly MP3 Application");