diff options
Diffstat (limited to 'alsa-lib/src/control/cards.c')
| -rw-r--r-- | alsa-lib/src/control/cards.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/alsa-lib/src/control/cards.c b/alsa-lib/src/control/cards.c deleted file mode 100644 index 4d2c739..0000000 --- a/alsa-lib/src/control/cards.c +++ /dev/null @@ -1,200 +0,0 @@ -/** - * \file control/cards.c - * \brief Basic Soundcard Operations - * \author Jaroslav Kysela <perex@perex.cz> - * \date 1998-2001 - */ -/* - * Soundcard Operations - main file - * Copyright (c) 1998 by Jaroslav Kysela <perex@perex.cz> - * - * - * This library is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as - * published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <ctype.h> -#include <fcntl.h> -#include <sys/ioctl.h> -#include "control_local.h" - -#ifndef DOC_HIDDEN -#define SND_FILE_CONTROL ALSA_DEVICE_DIRECTORY "controlC%i" -#define SND_FILE_LOAD ALOAD_DEVICE_DIRECTORY "aloadC%i" -#endif - -static int snd_card_load1(int card) -{ - int open_dev; - char control[sizeof(SND_FILE_CONTROL) + 10]; - - sprintf(control, SND_FILE_CONTROL, card); - - open_dev = snd_open_device(control, O_RDONLY); -#ifdef SUPPORT_ALOAD - if (open_dev < 0) { - char aload[sizeof(SND_FILE_LOAD) + 10]; - sprintf(aload, SND_FILE_LOAD, card); - open_dev = snd_open_device(aload, O_RDONLY); - } -#endif - if (open_dev >= 0) { - close (open_dev); - return 0; - } else { - return -errno; - } -} - -/** - * \brief Try to load the driver for a card. - * \param card Card number. - * \return 1 if driver is present, zero if driver is not present - */ -int snd_card_load(int card) -{ - return !!(snd_card_load1(card) == 0); -} - -/** - * \brief Try to determine the next card. - * \param rcard pointer to card number - * \result zero if success, otherwise a negative error code - * - * Tries to determine the next card from given card number. - * If card number is -1, then the first available card is - * returned. If the result card number is -1, no more cards - * are available. - */ -int snd_card_next(int *rcard) -{ - int card; - - if (rcard == NULL) - return -EINVAL; - card = *rcard; - card = card < 0 ? 0 : card + 1; - for (; card < 32; card++) { - if (snd_card_load(card)) { - *rcard = card; - return 0; - } - } - *rcard = -1; - return 0; -} - -/** - * \brief Convert card string to an integer value. - * \param string String containing card identifier - * \return zero if success, otherwise a negative error code - * - * The accepted format is an integer value in ASCII representation - * or the card identifier (the id parameter for sound-card drivers). - */ -int snd_card_get_index(const char *string) -{ - int card, err; - snd_ctl_t *handle; - snd_ctl_card_info_t info; - - if (!string || *string == '\0') - return -EINVAL; - if ((isdigit(*string) && *(string + 1) == 0) || - (isdigit(*string) && isdigit(*(string + 1)) && *(string + 2) == 0)) { - if (sscanf(string, "%i", &card) != 1) - return -EINVAL; - if (card < 0 || card > 31) - return -EINVAL; - err = snd_card_load1(card); - if (err >= 0) - return card; - return err; - } - for (card = 0; card < 32; card++) { -#ifdef SUPPORT_ALOAD - if (! snd_card_load(card)) - continue; -#endif - if (snd_ctl_hw_open(&handle, NULL, card, 0) < 0) - continue; - if (snd_ctl_card_info(handle, &info) < 0) { - snd_ctl_close(handle); - continue; - } - snd_ctl_close(handle); - if (!strcmp((const char *)info.id, string)) - return card; - } - return -ENODEV; -} - -/** - * \brief Obtain the card name. - * \param card Card number - * \param name Result - card name corresponding to card number - * \result zero if success, otherwise a negative error code - */ -int snd_card_get_name(int card, char **name) -{ - snd_ctl_t *handle; - snd_ctl_card_info_t info; - int err; - - if (name == NULL) - return -EINVAL; - if ((err = snd_ctl_hw_open(&handle, NULL, card, 0)) < 0) - return err; - if ((err = snd_ctl_card_info(handle, &info)) < 0) { - snd_ctl_close(handle); - return err; - } - snd_ctl_close(handle); - *name = strdup((const char *)info.name); - if (*name == NULL) - return -ENOMEM; - return 0; -} - -/** - * \brief Obtain the card long name. - * \param card Card number - * \param name Result - card long name corresponding to card number - * \result zero if success, otherwise a negative error code - */ -int snd_card_get_longname(int card, char **name) -{ - snd_ctl_t *handle; - snd_ctl_card_info_t info; - int err; - - if (name == NULL) - return -EINVAL; - if ((err = snd_ctl_hw_open(&handle, NULL, card, 0)) < 0) - return err; - if ((err = snd_ctl_card_info(handle, &info)) < 0) { - snd_ctl_close(handle); - return err; - } - snd_ctl_close(handle); - *name = strdup((const char *)info.longname); - if (*name == NULL) - return -ENOMEM; - return 0; -} |