catmeow/looper
catmeow/looper
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
looper/subprojects/mpg123/src/control_generic.c
Zachary Hall 25c8d7b01b Make it work
2024-09-28 10:31:18 -07:00

975 lines
28 KiB
C
Raw Blame History

/*
control_generic.c: control interface for frontends and real console warriors
copyright 1997-99,2004-23 by the mpg123 project
free software under the terms of the LGPL 2.1
see COPYING and AUTHORS files in distribution or http://mpg123.org
initially written by Andreas Neuhaus and Michael Hipp
reworked by Thomas Orgis - it was the entry point for eventually becoming maintainer...
*/
#include "config.h"
/* _BSD_SOURCE needed for setlinebuf, erm, but that's deprecated
so trying _DEFAULT_SOURCE */
#ifndef _DEFAULT_SOURCE
#define _DEFAULT_SOURCE
#endif
/* Defining that after _DEFAULT_SOURCE seems fine and is still
needed for older glibc. I guess I need a configure check
about setlinebuf()/setvbuf() if I really care about old
systems. */
#ifndef _BSD_SOURCE
#define _BSD_SOURCE
#endif
#include "compat/compat.h"
#include "mpg123app.h"
#include "out123.h"
#include <stdarg.h>
#include <ctype.h>
#if !defined (_WIN32) || defined (__CYGWIN__)
#include <sys/wait.h>
#include <sys/socket.h>
#endif
#include <errno.h>
#include <string.h>
#include "common.h"
#include "genre.h"
#include "playlist.h"
#include "metaprint.h"
#include "audio.h"
#define MODE_STOPPED 0
#define MODE_PLAYING 1
#define MODE_PAUSED 2
extern out123_handle *ao;
#ifdef FIFO
#include <sys/stat.h>
int control_file = STDIN_FILENO;
#else
#define control_file STDIN_FILENO
#ifdef WANT_WIN32_FIFO
#error Control interface does not work on win32 stdin
#endif /* WANT_WIN32_FIFO */
#endif
FILE *outstream;
int out_is_term = FALSE;
static int mode = MODE_STOPPED;
static int init = 0;
static int sendstat_disabled = FALSE;
#include "common/debug.h"
void generic_sendmsg (const char *fmt, ...)
{
va_list ap;
fprintf(outstream, "@");
va_start(ap, fmt);
vfprintf(outstream, fmt, ap);
va_end(ap);
fprintf(outstream, "\n");
}
// Variant that takes the first argument as a string subject to filtering.
static void generic_sendstr(int is_utf8, const char *fmt, char* str, ...)
{
va_list ap;
va_start(ap, str);
char *outbuf = NULL;
outstr(&outbuf, str, is_utf8, out_is_term);
generic_sendmsg(fmt, PSTR(outbuf), ap);
free(outbuf);
va_end(ap);
}
// Another one for two strings. I want to avoid writing a full format string parser.
static void generic_send2str( int is_utf8, const char *fmt
, char* str, char *str2, ... )
{
va_list ap;
va_start(ap, str2);
char *outbuf1 = NULL;
char *outbuf2 = NULL;
outstr(&outbuf1, str, is_utf8, out_is_term);
outstr(&outbuf2, str2, is_utf8, out_is_term);
generic_sendmsg(fmt, PSTR(outbuf1), PSTR(outbuf2), ap);
free(outbuf2);
free(outbuf1);
va_end(ap);
}
// Another one for three strings. Meh ...
static void generic_send3str( int is_utf8, const char *fmt
, char* str, char *str2, char *str3, ... )
{
va_list ap;
va_start(ap, str3);
char *outbuf1 = NULL;
char *outbuf2 = NULL;
char *outbuf3 = NULL;
outstr(&outbuf1, str, is_utf8, out_is_term);
outstr(&outbuf2, str2, is_utf8, out_is_term);
outstr(&outbuf3, str3, is_utf8, out_is_term);
generic_sendmsg( fmt
, PSTR(outbuf1), PSTR(outbuf2), PSTR(outbuf3)
, ap );
free(outbuf3);
free(outbuf2);
free(outbuf1);
va_end(ap);
}
/* Split up a number of lines separated by \n, \r, both or just zero byte
and print out each line with specified prefix. */
static void generic_send_lines(int is_utf8, const char* fmt, mpg123_string *inlines)
{
size_t i;
int hadcr = 0, hadlf = 0;
char *lines = NULL;
char *line = NULL;
size_t len = 0;
char *outbuf = NULL;
if(inlines != NULL && inlines->fill)
{
lines = inlines->p;
len = inlines->fill;
}
else return;
line = lines;
for(i=0; i<len; ++i)
{
if(lines[i] == '\n' || lines[i] == '\r' || lines[i] == 0)
{
char save = lines[i]; /* saving, changing, restoring a byte in the data */
if(save == '\n') ++hadlf;
if(save == '\r') ++hadcr;
if((hadcr || hadlf) && hadlf % 2 == 0 && hadcr % 2 == 0) line = "";
if(line)
{
lines[i] = 0;
outstr(&outbuf, line, is_utf8, out_is_term);
generic_sendmsg(fmt, outbuf ? outbuf : "???");
line = NULL;
lines[i] = save;
}
}
else
{
hadlf = hadcr = 0;
if(line == NULL) line = lines+i;
}
}
free(outbuf);
}
void generic_sendstat (mpg123_handle *fr)
{
if(sendstat_disabled)
return;
off_t current_frame, frames_left;
double current_seconds, seconds_left;
if(!position_info(fr, 0, ao, &current_frame, &frames_left, &current_seconds, &seconds_left, NULL, NULL))
generic_sendmsg("F %" PRIiMAX " %" PRIiMAX " %3.2f %3.2f", (intmax_t)current_frame, (intmax_t)frames_left, current_seconds, seconds_left);
else
{
sendstat_disabled = TRUE;
generic_sendmsg("E Error getting position information, disabling playback status.");
}
}
// This is only valid as herlper to generic_sendv1, observe info memory usage!
static void v1add(char *buf[], char *info, const char *str, size_t len)
{
memset(info, 0, len);
if(!unknown2utf8(buf, str, len))
{
outstr(buf+1, buf[0], 1, out_is_term);
size_t slen = buf[1] ? strlen(buf[1])+1 : 0;
memcpy(info, PSTR(buf[1]), slen >=len ? len : slen);
}
}
static void generic_sendv1(mpg123_id3v1 *v1, const char *prefix)
{
int i;
char info[125] = "";
char *buf[2];
buf[0] = NULL;
buf[1] = NULL;
v1add(buf, info, v1->title, 30);
v1add(buf, info+30, v1->artist, 30);
v1add(buf, info+60, v1->album, 30);
v1add(buf, info+90, v1->year, 4);
v1add(buf, info+94, v1->comment, 30);
for(i=0;i<124; ++i) if(info[i] == 0) info[i] = ' ';
info[i] = 0;
generic_sendmsg("%s ID3:%s%s", prefix, info, (v1->genre<=genre_count) ? genre_table[v1->genre] : "Unknown");
generic_sendmsg("%s ID3.genre:%i", prefix, v1->genre);
if(v1->comment[28] == 0 && v1->comment[29] != 0)
generic_sendmsg("%s ID3.track:%i", prefix, (unsigned char)v1->comment[29]);
free(buf[1]);
free(buf[0]);
}
static void generic_sendinfoid3(mpg123_handle *mh)
{
mpg123_id3v1 *v1;
mpg123_id3v2 *v2;
if(MPG123_OK != mpg123_id3(mh, &v1, &v2))
{
error1("Cannot get ID3 data: %s", mpg123_strerror(mh));
return;
}
generic_sendmsg("I {");
if(v1 != NULL)
{
generic_sendv1(v1, "I");
}
if(v2 != NULL)
{
generic_send_lines(1, "I ID3v2.title:%s", v2->title);
generic_send_lines(1, "I ID3v2.artist:%s", v2->artist);
generic_send_lines(1, "I ID3v2.album:%s", v2->album);
generic_send_lines(1, "I ID3v2.year:%s", v2->year);
generic_send_lines(1, "I ID3v2.comment:%s", v2->comment);
generic_send_lines(1, "I ID3v2.genre:%s", v2->genre);
}
generic_sendmsg("I }");
}
void generic_sendalltag(mpg123_handle *mh)
{
mpg123_id3v1 *v1;
mpg123_id3v2 *v2;
generic_sendmsg("T {");
if(MPG123_OK != mpg123_id3(mh, &v1, &v2))
{
error1("Cannot get ID3 data: %s", mpg123_strerror(mh));
v2 = NULL;
v1 = NULL;
}
if(v1 != NULL) generic_sendv1(v1, "T");
if(v2 != NULL)
{
size_t i;
for(i=0; i<v2->texts; ++i)
{
char id[5];
memcpy(id, v2->text[i].id, 4);
id[4] = 0;
generic_sendstr(1, "T ID3v2.%s:", id);
generic_send_lines(1, "T =%s", &v2->text[i].text);
}
for(i=0; i<v2->extras; ++i)
{
char id[5];
memcpy(id, v2->extra[i].id, 4);
id[4] = 0;
generic_send2str( 1, "T ID3v2.%s desc(%s)"
, id, MPGSTR(v2->extra[i].description) );
generic_send_lines(1, "T =%s", &v2->extra[i].text);
}
for(i=0; i<v2->comments; ++i)
{
char id[5];
char lang[4];
memcpy(id, v2->comment_list[i].id, 4);
id[4] = 0;
memcpy(lang, v2->comment_list[i].lang, 3);
lang[3] = 0;
generic_send3str( 1, "T ID3v2.%s lang(%s) desc(%s):",
id, lang, MPGSTR(v2->comment_list[i].description) );
generic_send_lines(1, "T =%s", &v2->comment_list[i].text);
}
}
generic_sendmsg("T }");
}
void generic_sendinfo (char *filename)
{
char *s, *t;
s = strrchr(filename, '/');
if (!s)
s = filename;
else
s++;
t = strrchr(s, '.');
if (t)
*t = 0;
generic_sendstr(0, "I %s", s);
}
static void generic_load(mpg123_handle *fr, char *arg, int state)
{
sendstat_disabled = FALSE;
out123_drop(ao);
if(mode != MODE_STOPPED)
{
close_track();
mode = MODE_STOPPED;
}
if(!open_track(arg))
{
generic_sendmsg("E Error opening stream: %s", arg);
generic_sendmsg("P 0");
return;
}
mpg123_seek(fr, 0, SEEK_SET); /* This finds ID3v2 at beginning. */
if(mpg123_meta_check(fr) & MPG123_NEW_ID3)
{
generic_sendinfoid3(fr);
}
else generic_sendinfo(arg);
if(filept->htd.icy_name.fill) generic_sendstr(1, "I ICY-NAME: %s", filept->htd.icy_name.p);
if(filept->htd.icy_url.fill) generic_sendstr(1, "I ICY-URL: %s", filept->htd.icy_url.p);
mode = state;
init = 1;
generic_sendmsg(mode == MODE_PAUSED ? "P 1" : "P 2");
}
static void generic_loadlist(mpg123_handle *fr, char *arg)
{
/* arguments are two: first the index to play, then the URL */
long entry;
long i = 0;
char *file = NULL;
char *thefile = NULL;
char *outbuf = NULL;
/* I feel retarted with string parsing outside Perl. */
while(*arg && isspace(*arg)) ++arg;
entry = atol(arg);
while(*arg && !isspace(*arg)) ++arg;
while(*arg && isspace(*arg)) ++arg;
if(!*arg)
{
generic_sendmsg("E empty list name");
return;
}
generic_sendmsg("I {");
/* Now got the plain playlist path in arg. On to evil manupulation of mpg123's playlist code. */
param.listname = arg;
param.listentry = 0; /* The playlist shall not filter. */
param.loop = 1;
param.shuffle = 0;
int pl_utf8 = 0;
prepare_playlist(0, NULL, 0, &pl_utf8);
while((file = get_next_file()))
{
++i;
/* semantics: 0 brings you to the last track */
if(entry == 0 || entry == i) thefile = file;
outstr(&outbuf, file, pl_utf8, out_is_term);
generic_sendmsg("I LISTENTRY %li: %s", i, outbuf ? outbuf : "???");
}
if(!i) generic_sendmsg("I LIST EMPTY");
generic_sendmsg("I }");
/* If we have something to play, play it. */
if(thefile) generic_load(fr, thefile, MODE_PLAYING);
free_playlist(); /* Free memory after it is not needed anymore. */
free(outbuf);
}
int control_generic (mpg123_handle *fr)
{
struct timeval tv;
fd_set fds;
int n;
/* ThOr */
char alive = 1;
char silent = 0;
/* responses to stderr for frontends needing audio data from stdout */
if (param.remote_err)
{
outstream = stderr;
out_is_term = stderr_is_term;
}
else
{
outstream = stdout;
out_is_term = stdout_is_term;
}
#ifndef _WIN32
setlinebuf(outstream);
#else /* perhaps just use setvbuf as it's C89 */
/*
fprintf(outstream, "You are on Win32 and want to use the control interface... tough luck: We need a replacement for select on STDIN first.\n");
return 0;
setvbuf(outstream, (char*)NULL, _IOLBF, 0);
*/
#endif
/* the command behaviour is different, so is the ID */
/* now also with version for command availability */
fprintf(outstream, "@R MPG123 (ThOr) v11\n");
#ifdef FIFO
if(param.fifo)
{
if(param.fifo[0] == 0)
{
error("You wanted an empty FIFO name??");
return 1;
}
#ifndef WANT_WIN32_FIFO
unlink(param.fifo);
if(mkfifo(param.fifo, 0666) == -1)
{
error2("Failed to create FIFO at %s (%s)", param.fifo, INT123_strerror(errno));
return 1;
}
debug("going to open named pipe ... blocking until someone gives command");
#endif /* WANT_WIN32_FIFO */
#ifdef WANT_WIN32_FIFO
control_file = win32_fifo_mkfifo(param.fifo);
#else
control_file = open(param.fifo,O_RDONLY);
#endif /* WANT_WIN32_FIFO */
debug("opened");
}
#endif
// Persist over loop iterations to remember unfinished commands.
char buf[REMOTE_BUFFER_SIZE]; // command buffer
short int last_len = 0; // length of partial command in there
while (alive)
{
tv.tv_sec = 0;
tv.tv_usec = 0;
FD_ZERO(&fds);
FD_SET(control_file, &fds);
/* play frame if no command needs to be processed */
if (mode == MODE_PLAYING) {
#ifdef WANT_WIN32_FIFO
n = win32_fifo_read_peek(&tv);
#else
n = select(32, &fds, NULL, NULL, &tv);
#endif
if (n == 0) {
if (!play_frame())
{
size_t drain_block;
size_t buffered;
// Ensure that prepared audio really got played, drain buffer.
// There is no control during draining. This mode was not planned for big buffers.
play_prebuffer();
buffered = out123_buffered(ao);
if(buffered)
{
int framesize = 1;
long rate = 1;
out123_getformat(ao, &rate, NULL, NULL, &framesize);
generic_sendmsg("DRAIN %.1f", (double)buffered/framesize/rate);
if(silent == 0)
{
generic_sendstat(fr);
drain_block = 1152*framesize;
do
{
out123_ndrain(ao, drain_block);
generic_sendstat(fr);
}
while(out123_buffered(ao));
} else
out123_drain(ao);
}
out123_pause(ao);
generic_sendmsg("P 3");
/* When the track ended, user may want to keep it open (to seek back),
so there is a decision between stopping and pausing at the end. */
if(param.keep_open)
{
mode = MODE_PAUSED;
/* Hm, buffer should be stopped already, shouldn't it? */
generic_sendmsg("P 1");
}
else
{
mode = MODE_STOPPED;
close_track();
generic_sendmsg("P 0");
}
continue;
}
if (init) {
print_remote_header(fr);
init = 0;
}
if(silent == 0)
{
generic_sendstat(fr);
if(mpg123_meta_check(fr) & MPG123_NEW_ICY)
{
char *meta;
if(mpg123_icy(fr, &meta) == MPG123_OK)
generic_sendstr( 1, "I ICY-META: %s"
, meta != NULL ? meta : "<nil>" );
}
}
}
}
else {
/* wait for command */
while (1) {
#ifdef WANT_WIN32_FIFO
n = win32_fifo_read_peek(NULL);
#else
n = select(32, &fds, NULL, NULL, NULL);
#endif
if (n > 0)
break;
}
}
/* on error */
if(n < 0)
{
merror("waiting for command: %s", INT123_strerror(errno));
return 1;
}
/* read & process commands */
if (n > 0)
{
short int len = 1; /* length of buffer */
char *cmd, *arg; /* variables for parsing, */
char *comstr = NULL; /* gcc thinks that this could be used uninitialited... */
short int counter;
char *next_comstr = buf; /* have it initialized for first command */
/* read as much as possible, maybe multiple commands */
/* When there is nothing to read (EOF) or even an error, it is the end */
#ifdef WANT_WIN32_FIFO
len = win32_fifo_read(buf+last_len,REMOTE_BUFFER_SIZE-last_len);
#else
len = read(control_file, buf+last_len, REMOTE_BUFFER_SIZE-last_len);
#endif
if(len < 1)
{
#ifdef FIFO
if(len == 0 && param.fifo)
{
debug("fifo ended... reopening");
#ifdef WANT_WIN32_FIFO
win32_fifo_mkfifo(param.fifo);
#else
close(control_file);
control_file = open(param.fifo,O_RDONLY|O_NONBLOCK);
#endif
if(control_file < 0){ error1("open of fifo failed... %s", INT123_strerror(errno)); break; }
continue;
}
#endif
if(len < 0) error1("command read error: %s", INT123_strerror(errno));
break;
}
debug1("read %i bytes of commands", len);
len += last_len; // on top of remembered piece
/* one command on a line - separation by \n -> C strings in a row */
last_len = 0;
for(counter = 0; counter < len; ++counter)
{
/* line end is command end */
if( (buf[counter] == '\n') || (buf[counter] == '\r') )
{
debug1("line end at counter=%i", counter);
buf[counter] = 0; /* now it's a properly ending C string */
comstr = next_comstr;
/* skip the additional line ender of \r\n or \n\r */
if( (counter < (len - 1)) && ((buf[counter+1] == '\n') || (buf[counter+1] == '\r')) ) buf[++counter] = 0;
/* next "real" char is first of next command */
next_comstr = buf + counter+1;
/* directly process the command now */
debug1("interpreting command: %s", comstr);
if(strlen(comstr) == 0) continue;
/* PAUSE */
if (!strcasecmp(comstr, "P") || !strcasecmp(comstr, "PAUSE")) {
if(mode != MODE_STOPPED)
{
if (mode == MODE_PLAYING) {
mode = MODE_PAUSED;
out123_pause(ao);
generic_sendmsg("P 1");
} else {
mode = MODE_PLAYING;
out123_continue(ao);
generic_sendmsg("P 2");
}
} else generic_sendmsg("P 0");
continue;
}
/* STOP */
if (!strcasecmp(comstr, "S") || !strcasecmp(comstr, "STOP")) {
if (mode != MODE_STOPPED) {
/* Do we want to drop here? */
out123_drop(ao);
out123_pause(ao);
close_track();
mode = MODE_STOPPED;
generic_sendmsg("P 0");
} else generic_sendmsg("P 0");
continue;
}
/* SILENCE */
if(!strcasecmp(comstr, "SILENCE")) {
silent = 1;
generic_sendmsg("SILENCE");
continue;
}
/* PROGRESS, opposite of silence */
if(!strcasecmp(comstr, "PROGRESS")) {
silent = 0;
generic_sendmsg("PROGRESS");
continue;
}
if(!strcasecmp(comstr, "MUTE")) {
set_mute(ao, muted=TRUE);
generic_sendmsg("MUTE");
continue;
}
if(!strcasecmp(comstr, "UNMUTE")) {
set_mute(ao, muted=FALSE);
generic_sendmsg("UNMUTE");
continue;
}
if(!strcasecmp(comstr, "T") || !strcasecmp(comstr, "TAG")) {
generic_sendalltag(fr);
continue;
}
if(!strcasecmp(comstr, "SCAN"))
{
if(mode != MODE_STOPPED)
{
if(mpg123_scan(fr) == MPG123_OK)
generic_sendmsg("SCAN done");
else
generic_sendmsg("E %s", mpg123_strerror(fr));
}
else generic_sendmsg("E No track loaded!");
continue;
}
if(!strcasecmp(comstr, "SAMPLE"))
{
off_t pos = mpg123_tell(fr);
off_t len = mpg123_length(fr);
/* I need to have portable printf specifiers that do not truncate the type... more autoconf... */
if(len < 0) generic_sendmsg("E %s", mpg123_strerror(fr));
else generic_sendmsg("SAMPLE %li %li", (long)pos, (long)len);
continue;
}
if(!strcasecmp(comstr, "FORMAT"))
{
long rate;
int ch;
int ret = mpg123_getformat2(fr, &rate, &ch, NULL, 0);
/* I need to have portable printf specifiers that do not truncate the type... more autoconf... */
if(ret < 0) generic_sendmsg("E %s", mpg123_strerror(fr));
else generic_sendmsg("FORMAT %li %i", rate, ch);
continue;
}
if(!strcasecmp(comstr, "SHOWEQ"))
{
int i;
generic_sendmsg("SHOWEQ {");
for(i=0; i<32; ++i)
{
generic_sendmsg("SHOWEQ %i : %i : %f", MPG123_LEFT, i, mpg123_geteq(fr, MPG123_LEFT, i));
generic_sendmsg("SHOWEQ %i : %i : %f", MPG123_RIGHT, i, mpg123_geteq(fr, MPG123_RIGHT, i));
}
generic_sendmsg("SHOWEQ }");
continue;
}
if(!strcasecmp(comstr, "STATE"))
{
long val;
generic_sendmsg("STATE {");
/* Get some state information bits and display them. */
if(mpg123_getstate(fr, MPG123_ACCURATE, &val, NULL) == MPG123_OK)
generic_sendmsg("STATE accurate %li", val);
generic_sendmsg("STATE }");
continue;
}
/* QUIT */
if (!strcasecmp(comstr, "Q") || !strcasecmp(comstr, "QUIT")){
out123_drop(ao);
alive = FALSE; continue;
}
/* some HELP */
if (!strcasecmp(comstr, "H") || !strcasecmp(comstr, "HELP")) {
generic_sendmsg("H {");
generic_sendmsg("H HELP/H: command listing (LONG/SHORT forms), command case insensitve");
generic_sendmsg("H LOAD/L <trackname>: load and start playing resource <trackname>");
generic_sendmsg("H LOADPAUSED/LP <trackname>: load but do not start playing resource <trackname>");
generic_sendmsg("H LOADLIST/LL <entry> <url>: load a playlist from given <url>, and display its entries, optionally load and play one of these specificed by the integer <entry> (<0: just list, 0: play last track, >0:play track with that position in list)");
generic_sendmsg("H PAUSE/P: pause playback");
generic_sendmsg("H STOP/S: stop playback (closes file)");
generic_sendmsg("H JUMP/J <frame>|<+offset>|<-offset>|<[+|-]seconds>s: jump to mpeg frame <frame> or change position by offset, same in seconds if number followed by \"s\"");
generic_sendmsg("H VOLUME/V <percent>: set volume in % (0..100...); float value");
generic_sendmsg("H MUTE: turn on software mute in output");
generic_sendmsg("H UNMUTE: turn off software mute in output");
generic_sendmsg("H RVA off|(mix|radio)|(album|audiophile): set rva mode");
generic_sendmsg("H EQ/E <channel> <band> <value>: set equalizer value for frequency band 0 to 31 on channel %i (left) or %i (right) or %i (both)", MPG123_LEFT, MPG123_RIGHT, MPG123_LR);
generic_sendmsg("H EQFILE <filename>: load EQ settings from a file");
generic_sendmsg("H SHOWEQ: show all equalizer settings (as <channel> <band> <value> lines in a SHOWEQ block (like TAG))");
generic_sendmsg("H SEEK/K <sample>|<+offset>|<-offset>: jump to output sample position <samples> or change position by offset");
generic_sendmsg("H SCAN: scan through the file, building seek index");
generic_sendmsg("H SAMPLE: print out the sample position and total number of samples");
generic_sendmsg("H FORMAT: print out sampling rate in Hz and channel count");
generic_sendmsg("H SEQ <bass> <mid> <treble>: simple eq setting...");
generic_sendmsg("H PITCH <[+|-]value>: adjust playback speed (+0.01 is 1 %% faster)");
generic_sendmsg("H SILENCE: be silent during playback (no progress info, opposite of PROGRESS)");
generic_sendmsg("H PROGRESS: turn on progress display (opposite of SILENCE)");
generic_sendmsg("H STATE: Print auxiliary state info in several lines (just try it to see what info is there).");
generic_sendmsg("H TAG/T: Print all available (ID3) tag info, for ID3v2 that gives output of all collected text fields, using the ID3v2.3/4 4-character names. NOTE: ID3v2 data will be deleted on non-forward seeks.");
generic_sendmsg("H The output is multiple lines, begin marked by \"@T {\", end by \"@T }\".");
generic_sendmsg("H ID3v1 data is like in the @I info lines (see below), just with \"@T\" in front.");
generic_sendmsg("H An ID3v2 data field is introduced via ([ ... ] means optional):");
generic_sendmsg("H @T ID3v2.<NAME>[ [lang(<LANG>)] desc(<description>)]:");
generic_sendmsg("H The lines of data follow with \"=\" prefixed:");
generic_sendmsg("H @T =<one line of content in UTF-8 encoding>");
generic_sendmsg("H meaning of the @S stream info:");
generic_sendmsg("H %s", remote_header_help);
generic_sendmsg("H The @I lines after loading a track give some ID3 info, the format:");
generic_sendmsg("H @I ID3:artist album year comment genretext");
generic_sendmsg("H where artist,album and comment are exactly 30 characters each, year is 4 characters, genre text unspecified.");
generic_sendmsg("H You will encounter \"@I ID3.genre:<number>\" and \"@I ID3.track:<number>\".");
generic_sendmsg("H Then, there is an excerpt of ID3v2 info in the structure");
generic_sendmsg("H @I ID3v2.title:Blabla bla Bla");
generic_sendmsg("H for every line of the \"title\" data field. Likewise for other fields (author, album, etc).");
generic_sendmsg("H }");
continue;
}
/* commands with arguments */
cmd = NULL;
arg = NULL;
cmd = strtok(comstr," \t"); /* get the main command */
arg = strtok(NULL,""); /* get the args */
if (cmd && strlen(cmd) && arg && strlen(arg))
{
#ifndef NO_EQUALIZER
/* Simple EQ: SEQ <BASS> <MID> <TREBLE> */
if (!strcasecmp(cmd, "SEQ")) {
double b,m,t;
if(sscanf(arg, "%lf %lf %lf", &b, &m, &t) == 3)
{
mpg123_eq_bands(fr, MPG123_LR, 0, 0, b);
mpg123_eq_bands(fr, MPG123_LR, 1, 1, m);
mpg123_eq_bands(fr, MPG123_LR, 2, 31, t);
generic_sendmsg("bass: %f mid: %f treble: %f", b, m, t);
}
else generic_sendmsg("E invalid arguments for SEQ: %s", arg);
continue;
}
/* Equalizer control :) (JMG) */
if (!strcasecmp(cmd, "E") || !strcasecmp(cmd, "EQ")) {
double e; /* ThOr: equalizer is of type real... whatever that is */
int c, v;
/*generic_sendmsg("%s",updown);*/
if(sscanf(arg, "%i %i %lf", &c, &v, &e) == 3)
{
if(mpg123_eq(fr, c, v, e) == MPG123_OK)
generic_sendmsg("%i : %i : %f", c, v, e);
else
generic_sendmsg("E failed to set eq: %s", mpg123_strerror(fr));
}
else generic_sendmsg("E invalid arguments for EQ: %s", arg);
continue;
}
if(!strcasecmp(cmd, "EQFILE"))
{
equalfile = arg;
if(load_equalizer(fr) == 0)
generic_sendmsg("EQFILE done");
else
generic_sendmsg("E failed to parse given eq file");
continue;
}
#endif
/* SEEK to a sample offset */
if(!strcasecmp(cmd, "K") || !strcasecmp(cmd, "SEEK"))
{
off_t soff;
off_t oldpos;
off_t newpos;
char *spos = arg;
int whence = SEEK_SET;
if(mode == MODE_STOPPED)
{
generic_sendmsg("E No track loaded!");
continue;
}
oldpos = mpg123_tell(fr);
soff = (off_t) atobigint(spos);
if(spos[0] == '-' || spos[0] == '+') whence = SEEK_CUR;
if(0 > (soff = mpg123_seek(fr, soff, whence)))
{
generic_sendmsg("E Error while seeking: %s", mpg123_strerror(fr));
mpg123_seek(fr, 0, SEEK_SET);
}
out123_drop(ao);
newpos = mpg123_tell(fr);
if(newpos <= oldpos) mpg123_meta_free(fr);
generic_sendmsg("K %" PRIiMAX, (intmax_t)newpos);
continue;
}
/* JUMP */
if (!strcasecmp(cmd, "J") || !strcasecmp(cmd, "JUMP")) {
char *spos;
off_t offset;
off_t oldpos;
double secs;
spos = arg;
if(mode == MODE_STOPPED)
{
generic_sendmsg("E No track loaded!");
continue;
}
oldpos = framenum;
if(spos[strlen(spos)-1] == 's' && sscanf(arg, "%lf", &secs) == 1) offset = mpg123_timeframe(fr, secs);
else offset = atol(spos);
/* totally replaced that stuff - it never fully worked
a bit usure about why +pos -> spos+1 earlier... */
if (spos[0] == '-' || spos[0] == '+') offset += framenum;
if(0 > (framenum = mpg123_seek_frame(fr, offset, SEEK_SET)))
{
generic_sendmsg("E Error while seeking");
mpg123_seek_frame(fr, 0, SEEK_SET);
}
out123_drop(ao);
if(framenum <= oldpos) mpg123_meta_free(fr);
generic_sendmsg("J %d", framenum);
continue;
}
/* VOLUME in percent */
if(!strcasecmp(cmd, "V") || !strcasecmp(cmd, "VOLUME"))
{
double v;
mpg123_volume(fr, atof(arg)/100);
mpg123_getvolume(fr, &v, NULL, NULL); /* Necessary? */
generic_sendmsg("V %f%%", v * 100);
continue;
}
/* PITCH (playback speed) in percent */
if(!strcasecmp(cmd, "PITCH"))
{
double p;
if(sscanf(arg, "%lf", &p) == 1)
{
set_pitch(fr, ao, p);
generic_sendmsg("PITCH %f", param.pitch);
}
else generic_sendmsg("E invalid arguments for PITCH: %s", arg);
continue;
}
/* RVA mode */
if(!strcasecmp(cmd, "RVA"))
{
if(!strcasecmp(arg, "off")) param.rva = MPG123_RVA_OFF;
else if(!strcasecmp(arg, "mix") || !strcasecmp(arg, "radio")) param.rva = MPG123_RVA_MIX;
else if(!strcasecmp(arg, "album") || !strcasecmp(arg, "audiophile")) param.rva = MPG123_RVA_ALBUM;
mpg123_volume_change(fr, 0.);
generic_sendmsg("RVA %s", rva_name[param.rva]);
continue;
}
/* LOAD - actually play */
if (!strcasecmp(cmd, "L") || !strcasecmp(cmd, "LOAD")){ generic_load(fr, arg, MODE_PLAYING); continue; }
if (!strcasecmp(cmd, "LL") || !strcasecmp(cmd, "LOADLIST")){ generic_loadlist(fr, arg); continue; }
/* LOADPAUSED */
if (!strcasecmp(cmd, "LP") || !strcasecmp(cmd, "LOADPAUSED")){ generic_load(fr, arg, MODE_PAUSED); continue; }
/* no command matched */
generic_send2str(0, "E Unknown command with arguments: %s %s", cmd, arg);
} /* end commands with arguments */
else generic_sendstr( 0, "E Unknown command or no arguments: %s"
, comstr );
} /* end of single command processing */
} /* end of scanning the command buffer */
// Last character not nulled if we did not use all command text.
if(buf[len-1] != 0)
{
if(next_comstr == buf && len == REMOTE_BUFFER_SIZE)
{
generic_sendmsg("E Too long command, cannot parse.");
// Just skipping it, provoking further parsing erros, but maybe not fatal.
} else
{
last_len = len-(short)(next_comstr-buf);
mdebug("keeping %d bytes of old command", last_len);
memmove(buf, next_comstr, last_len);
}
}
} /* end command reading & processing */
} /* end main (alive) loop */
debug("going to end");
/* quit gracefully */
debug("closing control");
#ifdef FIFO
#if WANT_WIN32_FIFO
win32_fifo_close();
#else
close(control_file); /* be it FIFO or STDIN */
if(param.fifo) unlink(param.fifo);
#endif /* WANT_WIN32_FIFO */
#endif
debug("control_generic returning");
return 0;
}
/* EOF */
Reference in a new issue View git blame Copy permalink