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alsa-utils/iecset/iecset.c

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/*
iecset - change IEC958 status bits on ALSA
Copyright (C) 2003 by Takashi Iwai <tiwai@suse.de>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <ctype.h>
#include <alsa/asoundlib.h>
void dump_iec958(snd_aes_iec958_t *iec);
static int get_bool(const char *str)
{
if (strncmp(str, "yes", 3) == 0 ||
strncmp(str, "YES", 3) == 0 ||
strncmp(str, "on", 2) == 0 ||
strncmp(str, "ON", 2) == 0 ||
strncmp(str, "true", 4) == 0 ||
strncmp(str, "TRUE", 4) == 0 ||
*str == '1')
return 1;
return 0;
}
enum {
CMD_BOOL, CMD_BOOL_INV, CMD_INT
};
enum {
IDX_PRO, IDX_NOAUDIO, IDX_RATE, IDX_UNLOCK, IDX_SBITS, IDX_WORD, IDX_EMP, IDX_CAT, IDX_NOCOPY, IDX_ORIG,
IDX_LAST
};
struct cmdtbl {
const char *name;
int idx;
int type;
const char *desc;
};
static struct cmdtbl cmds[] = {
{ "pro", IDX_PRO, CMD_BOOL,
"professional (common)\n\toff = consumer mode, on = professional mode" },
{ "aud", IDX_NOAUDIO, CMD_BOOL_INV,
"audio (common)\n\ton = audio mode, off = non-audio mode" },
{ "rat", IDX_RATE, CMD_INT,
"rate (common)\n\tsample rate in Hz" },
{ "emp", IDX_EMP, CMD_INT,
"emphasis (common)\n\t0 = none, 1 = 50/15us, 2 = CCITT" },
{ "loc", IDX_UNLOCK, CMD_BOOL_INV,
"lock (prof.)\n\toff = rate unlocked, on = rate locked" },
{ "sbi", IDX_SBITS, CMD_INT,
"sbits (prof.)\n\tsample bits 2 = 20bit, 4 = 24bit, 6 = undef" },
{ "wor", IDX_WORD, CMD_INT,
"wordlength (prof.)\n\t0=no, 2=22-18bit, 4=23-19bit, 5=24-20bit, 6=20-16bit" },
{ "cat", IDX_CAT, CMD_INT,
"category (consumer)\n\t0-0x7f" },
{ "cop", IDX_NOCOPY, CMD_BOOL_INV,
"copyright (consumer)\n\toff = non-copyright, on = copyright" },
{ "ori", IDX_ORIG, CMD_BOOL,
"original (consumer)\n\toff = 1st-gen, on = original" },
};
static void error(const char *s, int err)
{
fprintf(stderr, "%s: %s\n", s, snd_strerror(err));
}
static void usage(void)
{
int i;
printf("Usage: iecset [options] [cmd arg...]\n");
printf("Options:\n");
printf(" -D device specifies the control device to use\n");
printf(" -c card specifies the card number to use (equiv. with -Dhw:#)\n");
printf(" -x dump the dump the AESx hex code for IEC958 PCM parameters\n");
printf(" -i read commands from stdin\n");
printf("Commands:\n");
for (i = 0; i < (int)(sizeof(cmds)/sizeof(cmds[0])); i++) {
printf(" %s\n", cmds[i].desc);
}
}
/*
* parse iecset commands
*/
static void parse_command(int *parms, const char *c, const char *arg)
{
int i;
for (i = 0; i < (int)(sizeof(cmds)/sizeof(cmds[0])); i++) {
if (strncmp(c, cmds[i].name, strlen(cmds[i].name)) == 0) {
int val;
switch (cmds[i].type) {
case CMD_BOOL:
val = get_bool(arg);
break;
case CMD_BOOL_INV:
val = !get_bool(arg);
break;
case CMD_INT:
default:
val = (int)strtol(arg, NULL, 0);
break;
}
parms[cmds[i].idx] = val;
return;
}
}
}
static char *skipspace(char *line)
{
char *p;
for (p = line; *p && isspace(*p); p++)
;
return p;
}
/*
* parse iecset commands from the file
*/
static void parse_file(int *parms, FILE *fp)
{
char line[1024], *cmd, *arg;
while (fgets(line, sizeof(line), fp) != NULL) {
cmd = skipspace(line);
if (*cmd == '#' || ! *cmd)
continue;
for (arg = cmd; *arg && !isspace(*arg); arg++)
;
if (! *arg)
continue;
*arg++ = 0;
arg = skipspace(arg);
if (! *arg)
continue;
parse_command(parms, cmd, arg);
}
}
/* update iec958 status values
* return non-zero if the values are modified
*/
static int update_iec958_status(snd_aes_iec958_t *iec958, int *parms)
{
int changed = 0;
if (parms[IDX_PRO] >= 0) {
if (parms[IDX_PRO])
iec958->status[0] |= IEC958_AES0_PROFESSIONAL;
else
iec958->status[0] &= ~IEC958_AES0_PROFESSIONAL;
changed = 1;
}
if (parms[IDX_NOAUDIO] >= 0) {
if (parms[IDX_NOAUDIO])
iec958->status[0] |= IEC958_AES0_NONAUDIO;
else
iec958->status[0] &= ~IEC958_AES0_NONAUDIO;
changed = 1;
}
if (parms[IDX_RATE] >= 0) {
if (iec958->status[0] & IEC958_AES0_PROFESSIONAL) {
iec958->status[0] &= ~IEC958_AES0_PRO_FS;
switch (parms[IDX_RATE]) {
case 44100:
iec958->status[0] |= IEC958_AES0_PRO_FS_44100;
break;
case 48000:
iec958->status[0] |= IEC958_AES0_PRO_FS_48000;
break;
case 3200:
iec958->status[0] |= IEC958_AES0_PRO_FS_32000;
break;
}
} else {
iec958->status[3] &= ~IEC958_AES3_CON_FS;
switch (parms[IDX_RATE]) {
case 44100:
iec958->status[3] |= IEC958_AES3_CON_FS_44100;
break;
case 48000:
iec958->status[3] |= IEC958_AES3_CON_FS_48000;
break;
case 3200:
iec958->status[3] |= IEC958_AES3_CON_FS_32000;
break;
}
}
changed = 1;
}
if (parms[IDX_NOCOPY] >= 0) {
if (! (iec958->status[0] & IEC958_AES0_PROFESSIONAL)) {
if (parms[IDX_NOCOPY])
iec958->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;
else
iec958->status[0] &= ~IEC958_AES0_CON_NOT_COPYRIGHT;
}
changed = 1;
}
if (parms[IDX_ORIG] >= 0) {
if (! (iec958->status[0] & IEC958_AES0_PROFESSIONAL)) {
if (parms[IDX_ORIG])
iec958->status[1] |= IEC958_AES1_CON_ORIGINAL;
else
iec958->status[1] &= ~IEC958_AES1_CON_ORIGINAL;
}
changed = 1;
}
if (parms[IDX_EMP] >= 0) {
if (iec958->status[0] & IEC958_AES0_PROFESSIONAL) {
iec958->status[0] &= ~IEC958_AES0_PRO_EMPHASIS;
switch (parms[IDX_EMP]) {
case 0:
iec958->status[0] |= IEC958_AES0_PRO_EMPHASIS_NONE;
break;
case 1:
iec958->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015;
break;
case 2:
iec958->status[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT;
break;
}
} else {
if (parms[IDX_EMP])
iec958->status[0] |= IEC958_AES0_CON_EMPHASIS_5015;
else
iec958->status[0] &= ~IEC958_AES0_CON_EMPHASIS_5015;
}
changed = 1;
}
if (parms[IDX_UNLOCK] >= 0) {
if (iec958->status[0] & IEC958_AES0_PROFESSIONAL) {
if (parms[IDX_UNLOCK])
iec958->status[0] |= IEC958_AES0_PRO_FREQ_UNLOCKED;
else
iec958->status[0] &= ~IEC958_AES0_PRO_FREQ_UNLOCKED;
}
changed = 1;
}
if (parms[IDX_SBITS] >= 0) {
if (iec958->status[0] & IEC958_AES0_PROFESSIONAL) {
iec958->status[2] &= ~IEC958_AES2_PRO_SBITS;
iec958->status[2] |= parms[IDX_SBITS] & 7;
}
changed = 1;
}
if (parms[IDX_WORD] >= 0) {
if (iec958->status[0] & IEC958_AES0_PROFESSIONAL) {
iec958->status[2] &= ~IEC958_AES2_PRO_WORDLEN;
iec958->status[2] |= (parms[IDX_WORD] & 7) << 3;
}
changed = 1;
}
if (parms[IDX_CAT] >= 0) {
if (! (iec958->status[0] & IEC958_AES0_PROFESSIONAL)) {
iec958->status[1] &= ~IEC958_AES1_CON_CATEGORY;
iec958->status[1] |= parms[IDX_CAT] & 0x7f;
}
changed = 1;
}
return changed;
}
int main(int argc, char **argv)
{
const char *dev = "default";
const char *spdif_str = SND_CTL_NAME_IEC958("", PLAYBACK, DEFAULT);
snd_ctl_t *ctl;
snd_ctl_elem_list_t *clist;
snd_ctl_elem_id_t *cid;
snd_ctl_elem_value_t *cval;
snd_aes_iec958_t iec958;
int from_stdin = 0;
int dumphex = 0;
int i, c, err;
unsigned int controls, cidx;
char tmpname[32];
int parms[IDX_LAST];
for (i = 0; i < IDX_LAST; i++)
parms[i] = -1; /* not set */
while ((c = getopt(argc, argv, "D:c:xhi")) != -1) {
switch (c) {
case 'D':
dev = optarg;
break;
case 'c':
i = atoi(optarg);
if (i < 0 || i >= 7) {
fprintf(stderr, "invalid card index %d\n", i);
return 1;
}
sprintf(tmpname, "hw:%d", i);
dev = tmpname;
break;
case 'x':
dumphex = 1;
break;
case 'i':
from_stdin = 1;
break;
default:
usage();
return 1;
}
}
if ((err = snd_ctl_open(&ctl, dev, 0)) < 0) {
error("snd_ctl_open", err);
return 1;
}
snd_ctl_elem_list_alloca(&clist);
if ((err = snd_ctl_elem_list(ctl, clist)) < 0) {
error("snd_ctl_elem_list", err);
return 1;
}
if ((err = snd_ctl_elem_list_alloc_space(clist, snd_ctl_elem_list_get_count(clist))) < 0) {
error("snd_ctl_elem_list_alloc_space", err);
return 1;
}
if ((err = snd_ctl_elem_list(ctl, clist)) < 0) {
error("snd_ctl_elem_list", err);
return 1;
}
controls = snd_ctl_elem_list_get_used(clist);
for (cidx = 0; cidx < controls; cidx++) {
if (!strcmp(snd_ctl_elem_list_get_name(clist, cidx), spdif_str))
break;
}
if (cidx >= controls) {
fprintf(stderr, "control \"%s\" not found\n", spdif_str);
return 1;
}
snd_ctl_elem_id_alloca(&cid);
snd_ctl_elem_list_get_id(clist, cidx, cid);
snd_ctl_elem_value_alloca(&cval);
snd_ctl_elem_value_set_id(cval, cid);
if ((err = snd_ctl_elem_read(ctl, cval)) < 0) {
error("snd_ctl_elem_read", err);
return 1;
}
snd_ctl_elem_value_get_iec958(cval, &iec958);
/* parse from stdin */
if (from_stdin)
parse_file(parms, stdin);
/* parse commands */
for (c = optind; c < argc - 1; c += 2)
parse_command(parms, argv[c], argv[c + 1]);
if (update_iec958_status(&iec958, parms)) {
/* store the values */
snd_ctl_elem_value_set_iec958(cval, &iec958);
if ((err = snd_ctl_elem_write(ctl, cval)) < 0) {
error("snd_ctl_elem_write", err);
return 1;
}
if ((err = snd_ctl_elem_read(ctl, cval)) < 0) {
error("snd_ctl_elem_write", err);
return 1;
}
snd_ctl_elem_value_get_iec958(cval, &iec958);
}
if (dumphex)
printf("AES0=0x%02x,AES1=0x%02x,AES2=0x%02x,AES3=0x%02x\n",
iec958.status[0], iec958.status[1], iec958.status[2], iec958.status[3]);
else
dump_iec958(&iec958);
snd_ctl_close(ctl);
return 0;
}
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