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jack1
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reformat, no change to binary 

git-svn-id: svn+ssh://jackaudio.org/trunk/jack@587 0c269be4-1314-0410-8aa9-9f06e86f4224
tags/0.109.0
joq 22 years ago
parent
8ac68d26c6
commit
d9393a32eb
1 changed files with 237 additions and 233 deletions
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  1. +237
    -233
      example-clients/transport.c

+ 237
- 233
example-clients/transport.c View File

@@ -50,76 +50,77 @@ volatile int time_reset = 1; /* true when time values change */
void timebase(jack_transport_state_t state, jack_nframes_t nframes, void timebase(jack_transport_state_t state, jack_nframes_t nframes,
jack_position_t *pos, int new_pos, void *arg) jack_position_t *pos, int new_pos, void *arg)
{ {
double min; /* minutes since frame 0 */
long abs_tick; /* ticks since frame 0 */
long abs_beat; /* beats since frame 0 */
double min; /* minutes since frame 0 */
long abs_tick; /* ticks since frame 0 */
long abs_beat; /* beats since frame 0 */


if (new_pos || time_reset) {
if (new_pos || time_reset) {


pos->valid = JackPositionBBT;
pos->beats_per_bar = time_beats_per_bar;
pos->beat_type = time_beat_type;
pos->ticks_per_beat = time_ticks_per_beat;
pos->beats_per_minute = time_beats_per_minute;
pos->valid = JackPositionBBT;
pos->beats_per_bar = time_beats_per_bar;
pos->beat_type = time_beat_type;
pos->ticks_per_beat = time_ticks_per_beat;
pos->beats_per_minute = time_beats_per_minute;


time_reset = 0; /* time change complete */
time_reset = 0; /* time change complete */


/* Compute BBT info from frame number. This is relatively
* simple here, but would become complex if we supported tempo
* or time signature changes at specific locations in the
* transport timeline. */
/* Compute BBT info from frame number. This is relatively
* simple here, but would become complex if we supported tempo
* or time signature changes at specific locations in the
* transport timeline. */


min = pos->frame / ((double) pos->frame_rate * 60.0);
abs_tick = min * pos->beats_per_minute * pos->ticks_per_beat;
abs_beat = abs_tick / pos->ticks_per_beat;
min = pos->frame / ((double) pos->frame_rate * 60.0);
abs_tick = min * pos->beats_per_minute * pos->ticks_per_beat;
abs_beat = abs_tick / pos->ticks_per_beat;


pos->bar = abs_beat / pos->beats_per_bar;
pos->beat = abs_beat - (pos->bar * pos->beats_per_bar) + 1;
pos->tick = abs_tick - (abs_beat * pos->ticks_per_beat);
pos->bar_start_tick = pos->bar * pos->beats_per_bar *
pos->ticks_per_beat;
pos->bar++; /* adjust start to bar 1 */
pos->bar = abs_beat / pos->beats_per_bar;
pos->beat = abs_beat - (pos->bar * pos->beats_per_bar) + 1;
pos->tick = abs_tick - (abs_beat * pos->ticks_per_beat);
pos->bar_start_tick = pos->bar * pos->beats_per_bar *
pos->ticks_per_beat;
pos->bar++; /* adjust start to bar 1 */


#if 0 #if 0
/* some debug code... */
fprintf(stderr, "\nnew position: %" PRIu32 "\tBBT: %3"
PRIi32 "|%" PRIi32 "|%04" PRIi32 "\n",
pos->frame, pos->bar, pos->beat, pos->tick);
/* some debug code... */
fprintf(stderr, "\nnew position: %" PRIu32 "\tBBT: %3"
PRIi32 "|%" PRIi32 "|%04" PRIi32 "\n",
pos->frame, pos->bar, pos->beat, pos->tick);
#endif #endif


} else {

/* Compute BBT info based on previous period. */
pos->tick +=
nframes * pos->ticks_per_beat * pos->beats_per_minute
/ (pos->frame_rate * 60);

while (pos->tick >= pos->ticks_per_beat) {
pos->tick -= pos->ticks_per_beat;
if (++pos->beat > pos->beats_per_bar) {
pos->beat = 1;
++pos->bar;
pos->bar_start_tick +=
pos->beats_per_bar * pos->ticks_per_beat;
}
} else {

/* Compute BBT info based on previous period. */
pos->tick +=
nframes * pos->ticks_per_beat * pos->beats_per_minute
/ (pos->frame_rate * 60);

while (pos->tick >= pos->ticks_per_beat) {
pos->tick -= pos->ticks_per_beat;
if (++pos->beat > pos->beats_per_bar) {
pos->beat = 1;
++pos->bar;
pos->bar_start_tick +=
pos->beats_per_bar
* pos->ticks_per_beat;
}
}
} }
}
} }


void jack_shutdown(void *arg) void jack_shutdown(void *arg)
{ {
#if defined(RL_READLINE_VERSION) && RL_READLINE_VERSION >= 0x0400 #if defined(RL_READLINE_VERSION) && RL_READLINE_VERSION >= 0x0400
rl_cleanup_after_signal();
rl_cleanup_after_signal();
#endif #endif
fprintf(stderr, "JACK shut down, exiting ...\n");
exit(1);
fprintf(stderr, "JACK shut down, exiting ...\n");
exit(1);
} }


void signal_handler(int sig) void signal_handler(int sig)
{ {
jack_client_close(client);
fprintf(stderr, "signal received, exiting ...\n");
exit(0);
jack_client_close(client);
fprintf(stderr, "signal received, exiting ...\n");
exit(0);
} }




@@ -127,65 +128,65 @@ void signal_handler(int sig)


void com_exit(char *arg) void com_exit(char *arg)
{ {
done = 1;
done = 1;
} }


void com_help(char *); /* forward declaration */ void com_help(char *); /* forward declaration */


void com_locate(char *arg) void com_locate(char *arg)
{ {
jack_nframes_t frame = 0;
jack_nframes_t frame = 0;


if (*arg != '\0')
frame = atoi(arg);
if (*arg != '\0')
frame = atoi(arg);


jack_transport_locate(client, frame);
jack_transport_locate(client, frame);
} }


void com_master(char *arg) void com_master(char *arg)
{ {
int cond = (*arg != '\0');
if (jack_set_timebase_callback(client, cond, timebase, NULL) != 0)
fprintf(stderr, "Unable to take over timebase.\n");
int cond = (*arg != '\0');
if (jack_set_timebase_callback(client, cond, timebase, NULL) != 0)
fprintf(stderr, "Unable to take over timebase.\n");
} }


void com_play(char *arg) void com_play(char *arg)
{ {
jack_transport_start(client);
jack_transport_start(client);
} }


void com_release(char *arg) void com_release(char *arg)
{ {
jack_release_timebase(client);
jack_release_timebase(client);
} }


void com_stop(char *arg) void com_stop(char *arg)
{ {
jack_transport_stop(client);
jack_transport_stop(client);
} }


/* Change the tempo for the entire timeline, not just from the current /* Change the tempo for the entire timeline, not just from the current
* location. */ * location. */
void com_tempo(char *arg) void com_tempo(char *arg)
{ {
float tempo = 120.0;
float tempo = 120.0;


if (*arg != '\0')
tempo = atof(arg);
if (*arg != '\0')
tempo = atof(arg);


time_beats_per_minute = tempo;
time_reset = 1;
time_beats_per_minute = tempo;
time_reset = 1;
} }


/* Set sync timeout in seconds. */ /* Set sync timeout in seconds. */
void com_timeout(char *arg) void com_timeout(char *arg)
{ {
double timeout = 2.0;
double timeout = 2.0;


if (*arg != '\0')
timeout = atof(arg);
if (*arg != '\0')
timeout = atof(arg);


jack_set_sync_timeout(client, (jack_time_t) (timeout*1000000));
jack_set_sync_timeout(client, (jack_time_t) (timeout*1000000));
} }




@@ -195,241 +196,244 @@ typedef void cmd_function_t(char *); /* command function type */


/* Transport command table. */ /* Transport command table. */
typedef struct { typedef struct {
char *name; /* User printable name of the function. */
cmd_function_t *func; /* Function to call to do the job. */
char *doc; /* Documentation for this function. */
char *name; /* user printable name */
cmd_function_t *func; /* function to call */
char *doc; /* documentation */
} command_t; } command_t;


/* command table must be in alphabetical order */ /* command table must be in alphabetical order */
command_t commands[] = { command_t commands[] = {
{ "exit", com_exit, "Exit transport program" },
{ "help", com_help, "Display help text [<command>]" },
{ "locate", com_locate, "Locate to frame <position>" },
{ "master", com_master, "Become timebase master [<conditionally>]" },
{ "play", com_play, "Start transport rolling" },
{ "quit", com_exit, "Synonym for `exit'"},
{ "release", com_release, "Release timebase" },
{ "stop", com_stop, "Stop transport" },
{ "tempo", com_tempo, "Set beat tempo <beats_per_min>" },
{ "timeout", com_timeout, "Set sync timeout in <seconds>" },
{ "?", com_help, "Synonym for `help'" },
{ (char *)NULL, (cmd_function_t *)NULL, (char *)NULL }
{"exit", com_exit, "Exit transport program"},
{"help", com_help, "Display help text [<command>]"},
{"locate", com_locate, "Locate to frame <position>"},
{"master", com_master, "Become timebase master "
"[<conditionally>]"},
{"play", com_play, "Start transport rolling"},
{"quit", com_exit, "Synonym for `exit'"},
{"release", com_release, "Release timebase"},
{"stop", com_stop, "Stop transport"},
{"tempo", com_tempo, "Set beat tempo <beats_per_min>"},
{"timeout", com_timeout, "Set sync timeout in <seconds>"},
{"?", com_help, "Synonym for `help'" },
{(char *)NULL, (cmd_function_t *)NULL, (char *)NULL }
}; };
command_t *find_command(char *name) command_t *find_command(char *name)
{ {
register int i;
size_t namelen;
register int i;
size_t namelen;


if ((name == NULL) || (*name == '\0'))
return ((command_t *)NULL);

namelen = strlen(name);
for (i = 0; commands[i].name; i++)
if (strncmp(name, commands[i].name, namelen) == 0) {

/* make sure the match is unique */
if ((commands[i+1].name) &&
(strncmp(name, commands[i+1].name, namelen) == 0))
if ((name == NULL) || (*name == '\0'))
return ((command_t *)NULL); return ((command_t *)NULL);
else
return (&commands[i]);
}

namelen = strlen(name);
for (i = 0; commands[i].name; i++)
if (strncmp(name, commands[i].name, namelen) == 0) {

/* make sure the match is unique */
if ((commands[i+1].name) &&
(strncmp(name, commands[i+1].name, namelen) == 0))
return ((command_t *)NULL);
else
return (&commands[i]);
}
return ((command_t *)NULL);
return ((command_t *)NULL);
} }


void com_help(char *arg) void com_help(char *arg)
{ {
register int i;
command_t *cmd;
register int i;
command_t *cmd;


if (!*arg) {
/* print help for all commands */
for (i = 0; commands[i].name; i++) {
printf("%s\t\t%s.\n", commands[i].name, commands[i].doc);
}
if (!*arg) {
/* print help for all commands */
for (i = 0; commands[i].name; i++) {
printf("%s\t\t%s.\n", commands[i].name,
commands[i].doc);
}


} else if ((cmd = find_command(arg))) {
printf("%s\t\t%s.\n", cmd->name, cmd->doc);
} else if ((cmd = find_command(arg))) {
printf("%s\t\t%s.\n", cmd->name, cmd->doc);


} else {
int printed = 0;
} else {
int printed = 0;


printf("No `%s' command. Valid command names are:\n", arg);
printf("No `%s' command. Valid command names are:\n", arg);


for (i = 0; commands[i].name; i++) {
/* Print in six columns. */
if (printed == 6) {
printed = 0;
printf ("\n");
}
for (i = 0; commands[i].name; i++) {
/* Print in six columns. */
if (printed == 6) {
printed = 0;
printf ("\n");
}


printf ("%s\t", commands[i].name);
printed++;
}
printf ("%s\t", commands[i].name);
printed++;
}


printf("\n\nTry `help [command]\' for more information.\n");
}
printf("\n\nTry `help [command]\' for more information.\n");
}
} }


void execute_command(char *line) void execute_command(char *line)
{ {
register int i;
command_t *command;
char *word;
register int i;
command_t *command;
char *word;
/* Isolate the command word. */
i = 0;
while (line[i] && whitespace(line[i]))
i++;
word = line + i;
/* Isolate the command word. */
i = 0;
while (line[i] && whitespace(line[i]))
i++;
word = line + i;
while (line[i] && !whitespace(line[i]))
i++;
while (line[i] && !whitespace(line[i]))
i++;
if (line[i])
line[i++] = '\0';
if (line[i])
line[i++] = '\0';
command = find_command(word);
command = find_command(word);
if (!command) {
fprintf(stderr, "%s: No such command. There is `help\'.\n", word);
return;
}
if (!command) {
fprintf(stderr, "%s: No such command. There is `help\'.\n",
word);
return;
}
/* Get argument to command, if any. */
while (whitespace(line[i]))
i++;
/* Get argument to command, if any. */
while (whitespace(line[i]))
i++;
word = line + i;
word = line + i;
/* invoke the command function. */
(*command->func)(word);
/* invoke the command function. */
(*command->func)(word);
} }




/* Strip whitespace from the start and end of string. */ /* Strip whitespace from the start and end of string. */
char *stripwhite(char *string) char *stripwhite(char *string)
{ {
register char *s, *t;
register char *s, *t;


s = string;
while (whitespace(*s))
s++;
s = string;
while (whitespace(*s))
s++;


if (*s == '\0')
return s;
if (*s == '\0')
return s;
t = s + strlen (s) - 1;
while (t > s && whitespace(*t))
t--;
*++t = '\0';
t = s + strlen (s) - 1;
while (t > s && whitespace(*t))
t--;
*++t = '\0';
return s;
return s;
} }
char *dupstr(char *s) char *dupstr(char *s)
{ {
char *r = malloc(strlen(s) + 1);
strcpy(r, s);
return r;
char *r = malloc(strlen(s) + 1);
strcpy(r, s);
return r;
} }
/* Readline generator function for command completion. */ /* Readline generator function for command completion. */
char *command_generator (const char *text, int state) char *command_generator (const char *text, int state)
{ {
static int list_index, len;
char *name;
static int list_index, len;
char *name;
/* If this is a new word to complete, initialize now. This
includes saving the length of TEXT for efficiency, and
initializing the index variable to 0. */
if (!state) {
list_index = 0;
len = strlen (text);
}
/* If this is a new word to complete, initialize now. This
includes saving the length of TEXT for efficiency, and
initializing the index variable to 0. */
if (!state) {
list_index = 0;
len = strlen (text);
}
/* Return the next name which partially matches from the
command list. */
while ((name = commands[list_index].name)) {
list_index++;
/* Return the next name which partially matches from the
command list. */
while ((name = commands[list_index].name)) {
list_index++;
if (strncmp(name, text, len) == 0)
return dupstr(name);
}
if (strncmp(name, text, len) == 0)
return dupstr(name);
}
return (char *) NULL; /* No names matched. */
return (char *) NULL; /* No names matched. */
} }


void command_loop() void command_loop()
{ {
char *line, *cmd;
char prompt[32];
char *line, *cmd;
char prompt[32];


snprintf(prompt, sizeof(prompt), "%s> ", package);
snprintf(prompt, sizeof(prompt), "%s> ", package);


/* Allow conditional parsing of the ~/.inputrc file. */
rl_readline_name = package;
/* Allow conditional parsing of the ~/.inputrc file. */
rl_readline_name = package;
/* Define a custom completion function. */
rl_completion_entry_function = command_generator;
/* Define a custom completion function. */
rl_completion_entry_function = command_generator;


/* Read and execute commands until the user quits. */
while (!done) {
/* Read and execute commands until the user quits. */
while (!done) {


line = readline(prompt);
line = readline(prompt);
if (line == NULL) { /* EOF? */
printf("\n"); /* close out prompt */
done = 1;
break;
}
if (line == NULL) { /* EOF? */
printf("\n"); /* close out prompt */
done = 1;
break;
}
/* Remove leading and trailing whitespace from the line. */
cmd = stripwhite(line);
/* If anything left, add to history and execute it. */
if (*cmd)
{
add_history(cmd);
execute_command(cmd);
}
/* Remove leading and trailing whitespace from the line. */
cmd = stripwhite(line);
/* If anything left, add to history and execute it. */
if (*cmd)
{
add_history(cmd);
execute_command(cmd);
}
free(line); /* realine() called malloc() */
}
free(line); /* realine() called malloc() */
}
} }


int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
/* basename $0 */
package = strrchr(argv[0], '/');
if (package == 0)
package = argv[0];
else
package++;
/* become a new client of the JACK server */
if ((client = jack_client_new(package)) == 0) {
fprintf(stderr, "jack server not running?\n");
return 1;
}
signal(SIGQUIT, signal_handler);
signal(SIGTERM, signal_handler);
signal(SIGHUP, signal_handler);
signal(SIGINT, signal_handler);
jack_on_shutdown(client, jack_shutdown, 0);
if (jack_activate(client)) {
fprintf(stderr, "cannot activate client");
return 1;
}
/* execute commands until done */
command_loop();
jack_client_close(client);
exit(0);
/* basename $0 */
package = strrchr(argv[0], '/');
if (package == 0)
package = argv[0];
else
package++;
/* become a new client of the JACK server */
if ((client = jack_client_new(package)) == 0) {
fprintf(stderr, "jack server not running?\n");
return 1;
}
signal(SIGQUIT, signal_handler);
signal(SIGTERM, signal_handler);
signal(SIGHUP, signal_handler);
signal(SIGINT, signal_handler);
jack_on_shutdown(client, jack_shutdown, 0);
if (jack_activate(client)) {
fprintf(stderr, "cannot activate client");
return 1;
}
/* execute commands until done */
command_loop();
jack_client_close(client);
exit(0);
} }

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