Merged new-mixer branch...

src/timer/Makefile.am

@@ -0,0 +1,7 @@
+EXTRA_LTLIBRARIES=libtimer.la
+
+libtimer_la_SOURCES = timer.c
+all: libtimer.la
+
+
+INCLUDES=-I$(top_srcdir)/include

src/timer/timer.c

@@ -0,0 +1,163 @@
+/*
+ *  Timer Interface - main file
+ *  Copyright (c) 1998 by Jaroslav Kysela <perex@jcu.cz>
+ *
+ *
+ *   This library is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Library 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 Library General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Library General Public
+ *   License along with this library; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include "asoundlib.h"
+
+#define SND_FILE_TIMER		"/dev/snd/timer"
+#define SND_TIMER_VERSION_MAX	SND_PROTOCOL_VERSION( 1, 0, 0 )
+
+typedef struct {
+	int fd;
+} snd_timer_t;
+
+int snd_timer_open(void **handle)
+{
+	int fd, ver;
+	snd_timer_t *tmr;
+
+	*handle = NULL;
+	
+	if ((fd = open(SND_FILE_TIMER, O_RDONLY)) < 0) {
+		snd_cards_mask();
+		if ((fd = open(SND_FILE_TIMER, O_RDONLY)) < 0)
+			return -errno;
+	}
+	if (ioctl(fd, SND_TIMER_IOCTL_PVERSION, &ver) < 0) {
+		close(fd);
+		return -errno;
+	}
+	if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_TIMER_VERSION_MAX)) {
+		close(fd);
+		return -SND_ERROR_UNCOMPATIBLE_VERSION;
+	}
+	tmr = (snd_timer_t *) calloc(1, sizeof(snd_timer_t));
+	if (tmr == NULL) {
+		close(fd);
+		return -ENOMEM;
+	}
+	tmr->fd = fd;
+	*handle = tmr;
+	return 0;
+}
+
+int snd_timer_close(void *handle)
+{
+	snd_timer_t *tmr;
+	int res;
+
+	tmr = (snd_timer_t *) handle;
+	if (!tmr)
+		return -EINVAL;
+	res = close(tmr->fd) < 0 ? -errno : 0;
+	free(tmr);
+	return res;
+}
+
+int snd_timer_file_descriptor(void *handle)
+{
+	snd_timer_t *tmr;
+
+	tmr = (snd_timer_t *) handle;
+	if (!tmr)
+		return -EINVAL;
+	return tmr->fd;
+}
+
+int snd_timer_general_info(void *handle, snd_timer_general_info_t * info)
+{
+	snd_timer_t *tmr;
+
+	tmr = (snd_timer_t *) handle;
+	if (!tmr || !info)
+		return -EINVAL;
+	if (ioctl(tmr->fd, SND_TIMER_IOCTL_GINFO, info) < 0)
+		return -errno;
+	return 0;
+}
+
+int snd_timer_select(void *handle, snd_timer_select_t * tselect)
+{
+	snd_timer_t *tmr;
+
+	tmr = (snd_timer_t *) handle;
+	if (!tmr || !tselect)
+		return -EINVAL;
+	if (ioctl(tmr->fd, SND_TIMER_IOCTL_SELECT, tselect) < 0)
+		return -errno;
+	return 0;
+}
+
+int snd_timer_info(void *handle, snd_timer_info_t * info)
+{
+	snd_timer_t *tmr;
+
+	tmr = (snd_timer_t *) handle;
+	if (!tmr || !info)
+		return -EINVAL;
+	if (ioctl(tmr->fd, SND_TIMER_IOCTL_INFO, info) < 0)
+		return -errno;
+	return 0;
+}
+
+int snd_timer_params(void *handle, snd_timer_params_t * params)
+{
+	snd_timer_t *tmr;
+
+	tmr = (snd_timer_t *) handle;
+	if (!tmr || !params)
+		return -EINVAL;
+	if (ioctl(tmr->fd, SND_TIMER_IOCTL_PARAMS, params) < 0)
+		return -errno;
+	return 0;
+}
+
+int snd_timer_status(void *handle, snd_timer_status_t * status)
+{
+	snd_timer_t *tmr;
+
+	tmr = (snd_timer_t *) handle;
+	if (!tmr || !status)
+		return -EINVAL;
+	if (ioctl(tmr->fd, SND_TIMER_IOCTL_STATUS, status) < 0)
+		return -errno;
+	return 0;
+}
+
+ssize_t snd_timer_read(void *handle, void *buffer, size_t size)
+{
+	snd_timer_t *tmr;
+	ssize_t result;
+
+	tmr = (snd_timer_t *) handle;
+	if (!tmr || (!buffer && size > 0) || size < 0)
+		return -EINVAL;
+	result = read(tmr->fd, buffer, size);
+	if (result < 0)
+		return -errno;
+	return result;
+}