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livetrax/libs/evoral/src/libsmf/smfsh.c
David Robillard 13bcd43423 Include stripped down libsmf code internally.
git-svn-id: svn://localhost/ardour2/branches/3.0@4531 d708f5d6-7413-0410-9779-e7cbd77b26cf
2009-02-11 17:38:40 +00:00

1035 lines
22 KiB
C

/*-
* Copyright (c) 2007, 2008 Edward Tomasz Napierała <trasz@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* ALTHOUGH THIS SOFTWARE IS MADE OF WIN AND SCIENCE, IT IS PROVIDED BY THE
* AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/**
* \file
*
* "SMF shell", command line utility.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sysexits.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include "smf.h"
#include "config.h"
#ifdef HAVE_LIBREADLINE
#include <readline/readline.h>
#include <readline/history.h>
#endif
smf_track_t *selected_track = NULL;
smf_event_t *selected_event = NULL;
smf_t *smf = NULL;
char *last_file_name = NULL;
#define COMMAND_LENGTH 10
static void
log_handler(const gchar *log_domain, GLogLevelFlags log_level, const gchar *message, gpointer notused)
{
if (strcmp(log_domain, "smfsh") == 0)
fprintf(stderr, "%s\n", message);
else
fprintf(stderr, "%s: %s\n", log_domain, message);
}
static int cmd_track(char *arg);
static int
cmd_load(char *file_name)
{
char *decoded;
if (file_name == NULL) {
if (last_file_name == NULL) {
g_critical("Please specify file name.");
return (-1);
}
file_name = strdup(last_file_name);
} else {
file_name = strdup(file_name);
}
selected_track = NULL;
selected_event = NULL;
if (smf != NULL) {
smf_delete(smf);
smf = NULL;
}
if (last_file_name != NULL)
free(last_file_name);
last_file_name = strdup(file_name);
smf = smf_load(file_name);
if (smf == NULL) {
g_critical("Couldn't load '%s'.", file_name);
smf = smf_new();
if (smf == NULL) {
g_critical("Cannot initialize smf_t.");
return (-1);
}
return (-2);
}
g_message("File '%s' loaded.", file_name);
decoded = smf_decode(smf);
g_message("%s.", decoded);
free(decoded);
cmd_track("1");
free(file_name);
return (0);
}
static int
cmd_save(char *file_name)
{
int ret;
if (file_name == NULL) {
if (last_file_name == NULL) {
g_critical("Please specify file name.");
return (-1);
}
file_name = strdup(last_file_name);
} else {
file_name = strdup(file_name);
}
if (last_file_name != NULL)
free(last_file_name);
last_file_name = strdup(file_name);
ret = smf_save(smf, file_name);
if (ret) {
g_critical("Couldn't save '%s'", file_name);
return (-1);
}
g_message("File '%s' saved.", file_name);
free(file_name);
return (0);
}
static int
cmd_ppqn(char *new_ppqn)
{
int tmp;
char *end;
if (new_ppqn == NULL) {
g_message("Pulses Per Quarter Note (aka Division) is %d.", smf->ppqn);
} else {
tmp = strtol(new_ppqn, &end, 10);
if (end - new_ppqn != strlen(new_ppqn)) {
g_critical("Invalid PPQN, garbage characters after the number.");
return (-1);
}
if (tmp <= 0) {
g_critical("Invalid PPQN, valid values are greater than zero.");
return (-2);
}
if (smf_set_ppqn(smf, tmp)) {
g_message("smf_set_ppqn failed.");
return (-3);
}
g_message("Pulses Per Quarter Note changed to %d.", smf->ppqn);
}
return (0);
}
static int
cmd_format(char *new_format)
{
int tmp;
char *end;
if (new_format == NULL) {
g_message("Format is %d.", smf->format);
} else {
tmp = strtol(new_format, &end, 10);
if (end - new_format != strlen(new_format)) {
g_critical("Invalid format value, garbage characters after the number.");
return (-1);
}
if (tmp < 0 || tmp > 2) {
g_critical("Invalid format value, valid values are in range 0 - 2, inclusive.");
return (-2);
}
if (smf_set_format(smf, tmp)) {
g_critical("smf_set_format failed.");
return (-3);
}
g_message("Forma changed to %d.", smf->format);
}
return (0);
}
static int
cmd_tracks(char *notused)
{
if (smf->number_of_tracks > 0)
g_message("There are %d tracks, numbered from 1 to %d.", smf->number_of_tracks, smf->number_of_tracks);
else
g_message("There are no tracks.");
return (0);
}
static int
parse_track_number(const char *arg)
{
int num;
char *end;
if (arg == NULL) {
if (selected_track == NULL) {
g_message("No track currently selected and no track number given.");
return (-1);
} else {
return (selected_track->track_number);
}
}
num = strtol(arg, &end, 10);
if (end - arg != strlen(arg)) {
g_critical("Invalid track number, garbage characters after the number.");
return (-1);
}
if (num < 1 || num > smf->number_of_tracks) {
if (smf->number_of_tracks > 0) {
g_critical("Invalid track number specified; valid choices are 1 - %d.", smf->number_of_tracks);
} else {
g_critical("There are no tracks.");
}
return (-1);
}
return (num);
}
static int
cmd_track(char *arg)
{
int num;
if (arg == NULL) {
if (selected_track == NULL)
g_message("No track currently selected.");
else
g_message("Currently selected is track number %d, containing %d events.",
selected_track->track_number, selected_track->number_of_events);
} else {
if (smf->number_of_tracks == 0) {
g_message("There are no tracks.");
return (-1);
}
num = parse_track_number(arg);
if (num < 0)
return (-1);
selected_track = smf_get_track_by_number(smf, num);
if (selected_track == NULL) {
g_critical("smf_get_track_by_number() failed, track not selected.");
return (-3);
}
selected_event = NULL;
g_message("Track number %d selected; it contains %d events.",
selected_track->track_number, selected_track->number_of_events);
}
return (0);
}
static int
cmd_trackadd(char *notused)
{
selected_track = smf_track_new();
if (selected_track == NULL) {
g_critical("smf_track_new() failed, track not created.");
return (-1);
}
smf_add_track(smf, selected_track);
selected_event = NULL;
g_message("Created new track; track number %d selected.", selected_track->track_number);
return (0);
}
static int
cmd_trackrm(char *arg)
{
int num = parse_track_number(arg);
if (num < 0)
return (-1);
if (selected_track != NULL && num == selected_track->track_number) {
selected_track = NULL;
selected_event = NULL;
}
smf_track_delete(smf_get_track_by_number(smf, num));
g_message("Track %d removed.", num);
return (0);
}
#define BUFFER_SIZE 1024
static int
show_event(smf_event_t *event)
{
int off = 0, i;
char *decoded, *type;
if (smf_event_is_metadata(event))
type = "Metadata";
else
type = "Event";
decoded = smf_event_decode(event);
if (decoded == NULL) {
decoded = malloc(BUFFER_SIZE);
if (decoded == NULL) {
g_critical("show_event: malloc failed.");
return (-1);
}
off += snprintf(decoded + off, BUFFER_SIZE - off, "Unknown event:");
for (i = 0; i < event->midi_buffer_length && i < 5; i++)
off += snprintf(decoded + off, BUFFER_SIZE - off, " 0x%x", event->midi_buffer[i]);
}
g_message("%d: %s: %s, %f seconds, %d pulses, %d delta pulses", event->event_number, type, decoded,
event->time_seconds, event->time_pulses, event->delta_time_pulses);
free(decoded);
return (0);
}
static int
cmd_events(char *notused)
{
smf_event_t *event;
if (selected_track == NULL) {
g_critical("No track selected - please use 'track <number>' command first.");
return (-1);
}
if (selected_track->number_of_events == 0) {
g_message("Selected track is empty.");
return (0);
}
g_message("List of events in track %d follows:", selected_track->track_number);
smf_rewind(smf);
while ((event = smf_track_get_next_event(selected_track)) != NULL)
show_event(event);
smf_rewind(smf);
return (0);
}
static int
parse_event_number(const char *arg)
{
int num;
char *end;
if (selected_track == NULL) {
g_critical("You need to select track first (using 'track <number>').");
return (-1);
}
if (arg == NULL) {
if (selected_event == NULL) {
g_message("No event currently selected and no event number given.");
return (-1);
} else {
return (selected_event->event_number);
}
}
num = strtol(arg, &end, 10);
if (end - arg != strlen(arg)) {
g_critical("Invalid event number, garbage characters after the number.");
return (-1);
}
if (num < 1 || num > selected_track->number_of_events) {
if (selected_track->number_of_events > 0)
g_critical("Invalid event number specified; valid choices are 1 - %d.", selected_track->number_of_events);
else
g_critical("There are no events in currently selected track.");
return (-1);
}
return (num);
}
static int
cmd_event(char *arg)
{
int num;
if (arg == NULL) {
if (selected_event == NULL) {
g_message("No event currently selected.");
} else {
g_message("Currently selected is event %d, track %d.", selected_event->event_number, selected_track->track_number);
show_event(selected_event);
}
} else {
num = parse_event_number(arg);
if (num < 0)
return (-1);
selected_event = smf_track_get_event_by_number(selected_track, num);
if (selected_event == NULL) {
g_critical("smf_get_event_by_number() failed, event not selected.");
return (-2);
}
g_message("Event number %d selected.", selected_event->event_number);
show_event(selected_event);
}
return (0);
}
static int
decode_hex(char *str, unsigned char **buffer, int *length)
{
int i, value, midi_buffer_length;
char buf[3];
unsigned char *midi_buffer = NULL;
char *end = NULL;
if ((strlen(str) % 2) != 0) {
g_critical("Hex value should have even number of characters, you know.");
goto error;
}
midi_buffer_length = strlen(str) / 2;
midi_buffer = malloc(midi_buffer_length);
if (midi_buffer == NULL) {
g_critical("malloc() failed.");
goto error;
}
for (i = 0; i < midi_buffer_length; i++) {
buf[0] = str[i * 2];
buf[1] = str[i * 2 + 1];
buf[2] = '\0';
value = strtoll(buf, &end, 16);
if (end - buf != 2) {
g_critical("Garbage characters detected after hex.");
goto error;
}
midi_buffer[i] = value;
}
*buffer = midi_buffer;
*length = midi_buffer_length;
return (0);
error:
if (midi_buffer != NULL)
free(midi_buffer);
return (-1);
}
static void
eventadd_usage(void)
{
g_message("Usage: add <time-in-seconds> <midi-in-hex> - for example, 'add 1 903C7F' will add");
g_message("Note On event, note C4, velocity 127, channel 1, one second from the start of song, channel 1.");
}
static int
cmd_eventadd(char *str)
{
int midi_buffer_length;
double seconds;
unsigned char *midi_buffer;
char *time, *endtime;
if (selected_track == NULL) {
g_critical("Please select a track first, using 'track <number>' command.");
return (-1);
}
if (str == NULL) {
eventadd_usage();
return (-2);
}
/* Extract the time. Don't use strsep(3), it doesn't work on SunOS. */
time = str;
str = strchr(str, ' ');
if (str != NULL) {
*str = '\0';
str++;
}
seconds = strtod(time, &endtime);
if (endtime - time != strlen(time)) {
g_critical("Time is supposed to be a number, without trailing characters.");
return (-3);
}
/* Called with one parameter? */
if (str == NULL) {
eventadd_usage();
return (-4);
}
if (decode_hex(str, &midi_buffer, &midi_buffer_length)) {
eventadd_usage();
return (-5);
}
selected_event = smf_event_new();
if (selected_event == NULL) {
g_critical("smf_event_new() failed, event not created.");
return (-6);
}
selected_event->midi_buffer = midi_buffer;
selected_event->midi_buffer_length = midi_buffer_length;
if (smf_event_is_valid(selected_event) == 0) {
g_critical("Event is invalid from the MIDI specification point of view, not created.");
smf_event_delete(selected_event);
selected_event = NULL;
return (-7);
}
smf_track_add_event_seconds(selected_track, selected_event, seconds);
g_message("Event created.");
return (0);
}
static int
cmd_text(char *str)
{
double seconds, type;
char *time, *typestr, *end;
if (selected_track == NULL) {
g_critical("Please select a track first, using 'track <number>' command.");
return (-1);
}
if (str == NULL) {
g_critical("Usage: text <time-in-seconds> <event-type> <text-itself>");
return (-2);
}
/* Extract the time. Don't use strsep(3), it doesn't work on SunOS. */
time = str;
str = strchr(str, ' ');
if (str != NULL) {
*str = '\0';
str++;
}
seconds = strtod(time, &end);
if (end - time != strlen(time)) {
g_critical("Time is supposed to be a number, without trailing characters.");
return (-3);
}
/* Called with one parameter? */
if (str == NULL) {
g_critical("Usage: text <time-in-seconds> <event-type> <text-itself>");
return (-4);
}
/* Extract the event type. */
typestr = str;
str = strchr(str, ' ');
if (str != NULL) {
*str = '\0';
str++;
}
type = strtod(typestr, &end);
if (end - typestr != strlen(typestr)) {
g_critical("Type is supposed to be a number, without trailing characters.");
return (-4);
}
if (type < 1 || type > 9) {
g_critical("Valid values for type are 1 - 9, inclusive.");
return (-5);
}
/* Called with one parameter? */
if (str == NULL) {
g_critical("Usage: text <time-in-seconds> <event-type> <text-itself>");
return (-4);
}
selected_event = smf_event_new_textual(type, str);
if (selected_event == NULL) {
g_critical("smf_event_new_textual() failed, event not created.");
return (-6);
}
assert(smf_event_is_valid(selected_event));
smf_track_add_event_seconds(selected_track, selected_event, seconds);
g_message("Event created.");
return (0);
}
static int
cmd_eventaddeot(char *time)
{
double seconds;
char *end;
if (selected_track == NULL) {
g_critical("Please select a track first, using 'track <number>' command.");
return (-1);
}
if (time == NULL) {
g_critical("Please specify the time, in seconds.");
return (-2);
}
seconds = strtod(time, &end);
if (end - time != strlen(time)) {
g_critical("Time is supposed to be a number, without trailing characters.");
return (-3);
}
if (smf_track_add_eot_seconds(selected_track, seconds)) {
g_critical("smf_track_add_eot() failed.");
return (-4);
}
g_message("Event created.");
return (0);
}
static int
cmd_eventrm(char *number)
{
int num = parse_event_number(number);
if (num < 0)
return (-1);
if (selected_event != NULL && num == selected_event->event_number)
selected_event = NULL;
smf_event_delete(smf_track_get_event_by_number(selected_track, num));
g_message("Event #%d removed.", num);
return (0);
}
static int
cmd_tempo(char *notused)
{
int i;
smf_tempo_t *tempo;
for (i = 0;; i++) {
tempo = smf_get_tempo_by_number(smf, i);
if (tempo == NULL)
break;
g_message("Tempo #%d: Starts at %d pulses, %f seconds, setting %d microseconds per quarter note, %.2f BPM.",
i, tempo->time_pulses, tempo->time_seconds, tempo->microseconds_per_quarter_note,
60000000.0 / (double)tempo->microseconds_per_quarter_note);
g_message("Time signature: %d/%d, %d clocks per click, %d 32nd notes per quarter note.",
tempo->numerator, tempo->denominator, tempo->clocks_per_click, tempo->notes_per_note);
}
return (0);
}
static int
cmd_length(char *notused)
{
g_message("Length: %d pulses, %f seconds.", smf_get_length_pulses(smf), smf_get_length_seconds(smf));
return (0);
}
static int
cmd_version(char *notused)
{
g_message("libsmf version %s.", smf_get_version());
return (0);
}
static int
cmd_exit(char *notused)
{
g_debug("Good bye.");
exit(0);
}
static int cmd_help(char *notused);
static struct command_struct {
char *name;
int (*function)(char *command);
char *help;
} commands[] = {{"help", cmd_help, "Show this help."},
{"?", cmd_help, NULL},
{"load", cmd_load, "Load named file."},
{"open", cmd_load},
{"save", cmd_save, "Save to named file."},
{"ppqn", cmd_ppqn, "Show ppqn (aka division), or set ppqn if used with parameter."},
{"format", cmd_format, "Show format, or set format if used with parameter."},
{"tracks", cmd_tracks, "Show number of tracks."},
{"track", cmd_track, "Show number of currently selected track, or select a track."},
{"trackadd", cmd_trackadd, "Add a track and select it."},
{"trackrm", cmd_trackrm, "Remove currently selected track."},
{"events", cmd_events, "Show events in the currently selected track."},
{"event", cmd_event, "Show number of currently selected event, or select an event."},
{"add", cmd_eventadd, "Add an event and select it."},
{"text", cmd_text, "Add textual event and select it."},
{"eventadd", cmd_eventadd, NULL},
{"eot", cmd_eventaddeot, "Add an End Of Track event."},
{"eventaddeot", cmd_eventaddeot, NULL},
{"eventrm", cmd_eventrm, NULL},
{"rm", cmd_eventrm, "Remove currently selected event."},
{"tempo", cmd_tempo, "Show tempo map."},
{"length", cmd_length, "Show length of the song."},
{"version", cmd_version, "Show libsmf version."},
{"exit", cmd_exit, "Exit to shell."},
{"quit", cmd_exit, NULL},
{"bye", cmd_exit, NULL},
{NULL, NULL, NULL}};
static int
cmd_help(char *notused)
{
int i, padding_length;
char padding[COMMAND_LENGTH + 1];
struct command_struct *tmp;
g_message("Available commands:");
for (tmp = commands; tmp->name != NULL; tmp++) {
/* Skip commands with no help string. */
if (tmp->help == NULL)
continue;
padding_length = COMMAND_LENGTH - strlen(tmp->name);
assert(padding_length >= 0);
for (i = 0; i < padding_length; i++)
padding[i] = ' ';
padding[i] = '\0';
g_message("%s:%s%s", tmp->name, padding, tmp->help);
}
return (0);
}
/**
* Removes (in place) all whitespace characters before the first
* non-whitespace and all trailing whitespace characters. Replaces
* more than one consecutive whitespace characters with one.
*/
static void
strip_unneeded_whitespace(char *str, int len)
{
char *src, *dest;
int skip_white = 1;
for (src = str, dest = str; src < dest + len; src++) {
if (*src == '\n' || *src == '\0') {
*dest = '\0';
break;
}
if (isspace(*src)) {
if (skip_white)
continue;
skip_white = 1;
} else {
skip_white = 0;
}
*dest = *src;
dest++;
}
/* Remove trailing whitespace. */
len = strlen(dest);
if (isspace(dest[len - 1]))
dest[len - 1] = '\0';
}
static char *
read_command(void)
{
char *buf;
int len;
#ifdef HAVE_LIBREADLINE
buf = readline("smfsh> ");
#else
buf = malloc(1024);
if (buf == NULL) {
g_critical("Malloc failed.");
return (NULL);
}
fprintf(stdout, "smfsh> ");
fflush(stdout);
buf = fgets(buf, 1024, stdin);
#endif
if (buf == NULL) {
fprintf(stdout, "exit\n");
return (strdup("exit"));
}
strip_unneeded_whitespace(buf, 1024);
len = strlen(buf);
if (len == 0)
return (read_command());
#ifdef HAVE_LIBREADLINE
add_history(buf);
#endif
return (buf);
}
static int
execute_command(char *line)
{
char *command, *args;
struct command_struct *tmp;
command = line;
args = strchr(line, ' ');
if (args != NULL) {
*args = '\0';
args++;
}
for (tmp = commands; tmp->name != NULL; tmp++) {
if (strcmp(tmp->name, command) == 0)
return ((tmp->function)(args));
}
g_warning("No such command: '%s'. Type 'help' to see available commands.", command);
return (-1);
}
static void
read_and_execute_command(void)
{
int ret;
char *command_line, *command, *next_command;
command = command_line = read_command();
do {
next_command = strchr(command, ';');
if (next_command != NULL) {
*next_command = '\0';
next_command++;
}
strip_unneeded_whitespace(command, 1024);
if (strlen(command) > 0) {
ret = execute_command(command);
if (ret)
g_warning("Command finished with error.");
}
command = next_command;
} while (command);
free(command_line);
}
#ifdef HAVE_LIBREADLINE
static char *
smfsh_command_generator(const char *text, int state)
{
static struct command_struct *command = commands;
char *tmp;
if (state == 0)
command = commands;
while (command->name != NULL) {
tmp = command->name;
command++;
if (strncmp(tmp, text, strlen(text)) == 0)
return (strdup(tmp));
}
return (NULL);
}
static char **
smfsh_completion(const char *text, int start, int end)
{
int i;
/* Return NULL if "text" is not the first word in the input line. */
if (start != 0) {
for (i = 0; i < start; i++) {
if (!isspace(rl_line_buffer[i]))
return (NULL);
}
}
return (rl_completion_matches(text, smfsh_command_generator));
}
#endif
static void
usage(void)
{
fprintf(stderr, "usage: smfsh [-V | file]\n");
exit(EX_USAGE);
}
int
main(int argc, char *argv[])
{
int ch;
while ((ch = getopt(argc, argv, "V")) != -1) {
switch (ch) {
case 'V':
cmd_version(NULL);
exit(EX_OK);
case '?':
default:
usage();
}
}
if (argc > 2)
usage();
g_log_set_default_handler(log_handler, NULL);
smf = smf_new();
if (smf == NULL) {
g_critical("Cannot initialize smf_t.");
return (-1);
}
if (argc == 2)
cmd_load(argv[1]);
else
cmd_trackadd(NULL);
#ifdef HAVE_LIBREADLINE
rl_readline_name = "smfsh";
rl_attempted_completion_function = smfsh_completion;
#endif
for (;;)
read_and_execute_command();
return (0);
}