mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-10 00:35:42 +01:00
432 lines
11 KiB
C
432 lines
11 KiB
C
/*
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iecset - change IEC958 status bits on ALSA
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Copyright (C) 2003 by Takashi Iwai <tiwai@suse.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <alsa/asoundlib.h>
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void dump_iec958(snd_aes_iec958_t *iec);
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static int get_bool(const char *str)
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{
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if (strncmp(str, "yes", 3) == 0 ||
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strncmp(str, "YES", 3) == 0 ||
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strncmp(str, "on", 2) == 0 ||
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strncmp(str, "ON", 2) == 0 ||
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strncmp(str, "true", 4) == 0 ||
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strncmp(str, "TRUE", 4) == 0 ||
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*str == '1')
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return 1;
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return 0;
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}
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enum {
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CMD_BOOL, CMD_BOOL_INV, CMD_INT
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};
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enum {
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IDX_PRO, IDX_NOAUDIO, IDX_RATE, IDX_UNLOCK, IDX_SBITS, IDX_WORD, IDX_EMP, IDX_CAT, IDX_NOCOPY, IDX_ORIG,
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IDX_LAST
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};
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struct cmdtbl {
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const char *name;
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int idx;
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int type;
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const char *desc;
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};
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static const struct cmdtbl cmds[] = {
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{ "pro", IDX_PRO, CMD_BOOL,
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"professional (common)\n\toff = consumer mode, on = professional mode" },
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{ "aud", IDX_NOAUDIO, CMD_BOOL_INV,
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"audio (common)\n\ton = audio mode, off = non-audio mode" },
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{ "rat", IDX_RATE, CMD_INT,
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"rate (common)\n\tsample rate in Hz (0 = not indicated)" },
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{ "emp", IDX_EMP, CMD_INT,
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"emphasis (common)\n\t0 = none, 1 = 50/15us, 2 = CCITT" },
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{ "loc", IDX_UNLOCK, CMD_BOOL_INV,
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"lock (prof.)\n\toff = rate unlocked, on = rate locked" },
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{ "sbi", IDX_SBITS, CMD_INT,
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"sbits (prof.)\n\tsample bits 2 = 20bit, 4 = 24bit, 6 = undef" },
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{ "wor", IDX_WORD, CMD_INT,
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"wordlength (prof.)\n\t0=no, 2=22-18bit, 4=23-19bit, 5=24-20bit, 6=20-16bit" },
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{ "cat", IDX_CAT, CMD_INT,
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"category (consumer)\n\t0-0x7f" },
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{ "cop", IDX_NOCOPY, CMD_BOOL_INV,
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"copyright (consumer)\n\toff = non-copyright, on = copyright" },
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{ "ori", IDX_ORIG, CMD_BOOL,
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"original (consumer)\n\toff = 1st-gen, on = original" },
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};
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static void error(const char *s, int err)
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{
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fprintf(stderr, "%s: %s\n", s, snd_strerror(err));
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}
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static void usage(void)
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{
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int i;
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printf("Usage: iecset [options] [cmd arg...]\n");
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printf("Options:\n");
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printf(" -D device specifies the control device to use\n");
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printf(" -c card specifies the card number to use (equiv. with -Dhw:#)\n");
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printf(" -n number specifies the control index number (default = 0)\n");
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printf(" -x dump the dump the AESx hex code for IEC958 PCM parameters\n");
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printf(" -i read commands from stdin\n");
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printf("Commands:\n");
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for (i = 0; i < (int)(sizeof(cmds)/sizeof(cmds[0])); i++) {
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printf(" %s\n", cmds[i].desc);
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}
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}
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/*
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* parse iecset commands
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*/
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static void parse_command(int *parms, const char *c, const char *arg)
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{
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int i;
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for (i = 0; i < (int)(sizeof(cmds)/sizeof(cmds[0])); i++) {
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if (strncmp(c, cmds[i].name, strlen(cmds[i].name)) == 0) {
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int val;
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switch (cmds[i].type) {
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case CMD_BOOL:
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val = get_bool(arg);
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break;
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case CMD_BOOL_INV:
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val = !get_bool(arg);
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break;
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case CMD_INT:
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default:
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val = (int)strtol(arg, NULL, 0);
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break;
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}
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parms[cmds[i].idx] = val;
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return;
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}
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}
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}
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static char *skipspace(char *line)
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{
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char *p;
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for (p = line; *p && isspace(*p); p++)
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;
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return p;
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}
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/*
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* parse iecset commands from the file
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*/
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static void parse_file(int *parms, FILE *fp)
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{
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char line[1024], *cmd, *arg;
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while (fgets(line, sizeof(line), fp) != NULL) {
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cmd = skipspace(line);
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if (*cmd == '#' || ! *cmd)
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continue;
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for (arg = cmd; *arg && !isspace(*arg); arg++)
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;
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if (! *arg)
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continue;
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*arg++ = 0;
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arg = skipspace(arg);
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if (! *arg)
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continue;
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parse_command(parms, cmd, arg);
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}
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}
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/* update iec958 status values
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* return non-zero if the values are modified
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*/
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static int update_iec958_status(snd_aes_iec958_t *iec958, int *parms)
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{
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int changed = 0;
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if (parms[IDX_PRO] >= 0) {
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if (parms[IDX_PRO])
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iec958->status[0] |= IEC958_AES0_PROFESSIONAL;
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else
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iec958->status[0] &= ~IEC958_AES0_PROFESSIONAL;
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changed = 1;
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}
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if (parms[IDX_NOAUDIO] >= 0) {
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if (parms[IDX_NOAUDIO])
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iec958->status[0] |= IEC958_AES0_NONAUDIO;
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else
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iec958->status[0] &= ~IEC958_AES0_NONAUDIO;
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changed = 1;
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}
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if (parms[IDX_RATE] >= 0) {
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if (iec958->status[0] & IEC958_AES0_PROFESSIONAL) {
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iec958->status[0] &= ~IEC958_AES0_PRO_FS;
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switch (parms[IDX_RATE]) {
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case 44100:
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iec958->status[0] |= IEC958_AES0_PRO_FS_44100;
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break;
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case 48000:
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iec958->status[0] |= IEC958_AES0_PRO_FS_48000;
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break;
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case 32000:
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iec958->status[0] |= IEC958_AES0_PRO_FS_32000;
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break;
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}
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} else {
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iec958->status[3] &= ~IEC958_AES3_CON_FS;
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switch (parms[IDX_RATE]) {
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case 22050:
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iec958->status[3] |= IEC958_AES3_CON_FS_22050;
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break;
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case 24000:
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iec958->status[3] |= IEC958_AES3_CON_FS_24000;
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break;
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case 32000:
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iec958->status[3] |= IEC958_AES3_CON_FS_32000;
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break;
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case 44100:
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iec958->status[3] |= IEC958_AES3_CON_FS_44100;
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break;
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case 48000:
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iec958->status[3] |= IEC958_AES3_CON_FS_48000;
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break;
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case 88200:
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iec958->status[3] |= IEC958_AES3_CON_FS_88200;;
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break;
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case 96000:
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iec958->status[3] |= IEC958_AES3_CON_FS_96000;
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break;
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case 176400:
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iec958->status[3] |= IEC958_AES3_CON_FS_176400;
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break;
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case 192000:
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iec958->status[3] |= IEC958_AES3_CON_FS_192000;
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break;
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case 768000:
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iec958->status[3] |= IEC958_AES3_CON_FS_768000;
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break;
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default:
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iec958->status[3] |= IEC958_AES3_CON_FS_NOTID;
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break;
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}
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}
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changed = 1;
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}
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if (parms[IDX_NOCOPY] >= 0) {
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if (! (iec958->status[0] & IEC958_AES0_PROFESSIONAL)) {
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if (parms[IDX_NOCOPY])
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iec958->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;
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else
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iec958->status[0] &= ~IEC958_AES0_CON_NOT_COPYRIGHT;
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}
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changed = 1;
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}
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if (parms[IDX_ORIG] >= 0) {
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if (! (iec958->status[0] & IEC958_AES0_PROFESSIONAL)) {
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if (parms[IDX_ORIG])
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iec958->status[1] |= IEC958_AES1_CON_ORIGINAL;
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else
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iec958->status[1] &= ~IEC958_AES1_CON_ORIGINAL;
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}
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changed = 1;
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}
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if (parms[IDX_EMP] >= 0) {
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if (iec958->status[0] & IEC958_AES0_PROFESSIONAL) {
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iec958->status[0] &= ~IEC958_AES0_PRO_EMPHASIS;
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switch (parms[IDX_EMP]) {
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case 0:
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iec958->status[0] |= IEC958_AES0_PRO_EMPHASIS_NONE;
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break;
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case 1:
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iec958->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015;
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break;
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case 2:
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iec958->status[0] |= IEC958_AES0_PRO_EMPHASIS_CCITT;
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break;
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}
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} else {
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if (parms[IDX_EMP])
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iec958->status[0] |= IEC958_AES0_CON_EMPHASIS_5015;
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else
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iec958->status[0] &= ~IEC958_AES0_CON_EMPHASIS_5015;
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}
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changed = 1;
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}
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if (parms[IDX_UNLOCK] >= 0) {
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if (iec958->status[0] & IEC958_AES0_PROFESSIONAL) {
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if (parms[IDX_UNLOCK])
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iec958->status[0] |= IEC958_AES0_PRO_FREQ_UNLOCKED;
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else
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iec958->status[0] &= ~IEC958_AES0_PRO_FREQ_UNLOCKED;
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}
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changed = 1;
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}
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if (parms[IDX_SBITS] >= 0) {
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if (iec958->status[0] & IEC958_AES0_PROFESSIONAL) {
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iec958->status[2] &= ~IEC958_AES2_PRO_SBITS;
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iec958->status[2] |= parms[IDX_SBITS] & 7;
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}
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changed = 1;
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}
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if (parms[IDX_WORD] >= 0) {
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if (iec958->status[0] & IEC958_AES0_PROFESSIONAL) {
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iec958->status[2] &= ~IEC958_AES2_PRO_WORDLEN;
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iec958->status[2] |= (parms[IDX_WORD] & 7) << 3;
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}
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changed = 1;
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}
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if (parms[IDX_CAT] >= 0) {
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if (! (iec958->status[0] & IEC958_AES0_PROFESSIONAL)) {
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iec958->status[1] &= ~IEC958_AES1_CON_CATEGORY;
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iec958->status[1] |= parms[IDX_CAT] & 0x7f;
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}
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changed = 1;
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}
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return changed;
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}
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int main(int argc, char **argv)
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{
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const char *dev = "default";
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const char *spdif_str = SND_CTL_NAME_IEC958("", PLAYBACK, DEFAULT);
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int spdif_index = -1;
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snd_ctl_t *ctl;
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snd_ctl_elem_list_t *clist;
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snd_ctl_elem_id_t *cid;
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snd_ctl_elem_value_t *cval;
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snd_aes_iec958_t iec958;
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int from_stdin = 0;
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int dumphex = 0;
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int i, c, err;
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unsigned int controls, cidx;
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char tmpname[32];
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int parms[IDX_LAST];
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for (i = 0; i < IDX_LAST; i++)
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parms[i] = -1; /* not set */
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while ((c = getopt(argc, argv, "D:c:n:xhi")) != -1) {
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switch (c) {
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case 'D':
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dev = optarg;
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break;
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case 'c':
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i = atoi(optarg);
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if (i < 0 || i >= 32) {
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fprintf(stderr, "invalid card index %d\n", i);
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return 1;
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}
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sprintf(tmpname, "hw:%d", i);
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dev = tmpname;
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break;
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case 'n':
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spdif_index = atoi(optarg);
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break;
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case 'x':
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dumphex = 1;
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break;
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case 'i':
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from_stdin = 1;
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break;
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default:
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usage();
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return 1;
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}
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}
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if ((err = snd_ctl_open(&ctl, dev, 0)) < 0) {
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error("snd_ctl_open", err);
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return 1;
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}
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snd_ctl_elem_list_alloca(&clist);
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if ((err = snd_ctl_elem_list(ctl, clist)) < 0) {
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error("snd_ctl_elem_list", err);
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return 1;
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}
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if ((err = snd_ctl_elem_list_alloc_space(clist, snd_ctl_elem_list_get_count(clist))) < 0) {
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error("snd_ctl_elem_list_alloc_space", err);
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return 1;
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}
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if ((err = snd_ctl_elem_list(ctl, clist)) < 0) {
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error("snd_ctl_elem_list", err);
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return 1;
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}
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controls = snd_ctl_elem_list_get_used(clist);
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for (cidx = 0; cidx < controls; cidx++) {
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if (!strcmp(snd_ctl_elem_list_get_name(clist, cidx), spdif_str))
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if (spdif_index < 0 ||
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snd_ctl_elem_list_get_index(clist, cidx) == spdif_index)
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break;
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}
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if (cidx >= controls) {
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fprintf(stderr, "control \"%s\" (index %d) not found\n",
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spdif_str, spdif_index);
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return 1;
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}
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snd_ctl_elem_id_alloca(&cid);
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snd_ctl_elem_list_get_id(clist, cidx, cid);
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snd_ctl_elem_value_alloca(&cval);
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snd_ctl_elem_value_set_id(cval, cid);
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if ((err = snd_ctl_elem_read(ctl, cval)) < 0) {
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error("snd_ctl_elem_read", err);
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return 1;
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}
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snd_ctl_elem_value_get_iec958(cval, &iec958);
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/* parse from stdin */
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if (from_stdin)
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parse_file(parms, stdin);
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/* parse commands */
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for (c = optind; c < argc - 1; c += 2)
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parse_command(parms, argv[c], argv[c + 1]);
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if (update_iec958_status(&iec958, parms)) {
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/* store the values */
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snd_ctl_elem_value_set_iec958(cval, &iec958);
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if ((err = snd_ctl_elem_write(ctl, cval)) < 0) {
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error("snd_ctl_elem_write", err);
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return 1;
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}
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if ((err = snd_ctl_elem_read(ctl, cval)) < 0) {
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error("snd_ctl_elem_write", err);
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return 1;
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}
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snd_ctl_elem_value_get_iec958(cval, &iec958);
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}
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if (dumphex)
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printf("AES0=0x%02x,AES1=0x%02x,AES2=0x%02x,AES3=0x%02x\n",
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iec958.status[0], iec958.status[1], iec958.status[2], iec958.status[3]);
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else
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dump_iec958(&iec958);
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snd_ctl_close(ctl);
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return 0;
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}
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