source: mainline/uspace/app/mixerctl/mixerctl.c@ 346643c

/*
 * Copyright (c) 2011 Jan Vesely
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup mixerctl
 * @{
 */
/** @file Mixer control for audio devices
 */

#include <assert.h>
#include <errno.h>
#include <str_error.h>
#include <str.h>
#include <devman.h>
#include <audio_mixer_iface.h>
#include <stdio.h>

#define DEFAULT_DEVICE "/hw/pci0/00:01.0/sb16/control"

static void print_levels(async_exch_t *exch)
{
        const char* name = NULL;
        unsigned count = 0;
        int ret = audio_mixer_get_info(exch, &name, &count);
        if (ret != EOK) {
                printf("Failed to get mixer info: %s.\n", str_error(ret));
                return;
        }
        printf("MIXER %s:\n", name);

        for (unsigned i = 0; i < count; ++i) {
                const char *name = NULL;
                unsigned channels = 0;
                const int ret =
                    audio_mixer_get_item_info(exch, i, &name, &channels);
                if (ret != EOK) {
                        printf("Failed to get item %u info: %s.\n",
                            i, str_error(ret));
                        continue;
                }
                for (unsigned j = 0; j < channels; ++j) {
                        const char *chan = NULL;
                        int ret = audio_mixer_get_channel_info(
                            exch, i, j, &chan, NULL);
                        if (ret != EOK) {
                                printf(
                                    "Failed to get channel %u-%u info: %s.\n",
                                    i, j, str_error(ret));
                        }
                        unsigned level = 0, max = 0;
                        ret = audio_mixer_channel_volume_get(
                            exch, i, j, &level, &max);
                        if (ret != EOK) {
                                printf("Failed to get channel %u-%u volume:"
                                    " %s.\n", i, j, str_error(ret));
                        }
                        bool mute = false;
                        ret = audio_mixer_channel_mute_get(
                            exch, i, j, &mute);
                        if (ret != EOK) {
                                printf("Failed to get channel %u-%u mute"
                                    " status: %s.\n", i, j, str_error(ret));
                        }

                        printf("\tChannel(%u/%u) %s %s volume: %u/%u%s.\n",
                            i, j, name, chan, level, max, mute ? " (M)":"");
                        free(chan);
                }
                free(name);

        }
}
/*----------------------------------------------------------------------------*/
static unsigned get_number(const char* str)
{
        uint16_t num;
        str_uint16_t(str, NULL, 10, false, &num);
        return num;
}
/*----------------------------------------------------------------------------*/
static void set_volume(async_exch_t *exch, int argc, char *argv[])
{
        assert(exch);
        if (argc != 5 && argc != 6) {
                printf("%s [device] setvolume item channel value\n", argv[0]);
        }
        unsigned params = argc == 6 ? 3 : 2;
        const unsigned item = get_number(argv[params++]);
        const unsigned channel = get_number(argv[params++]);
        const unsigned value = get_number(argv[params]);
        int ret = audio_mixer_channel_volume_set(exch, item, channel, value);
        if (ret != EOK) {
                printf("Failed to set mixer volume: %s.\n", str_error(ret));
                return;
        }
        printf("Channel %u-%u volume set to %u.\n", item, channel, value);
}
/*----------------------------------------------------------------------------*/
static void get_volume(async_exch_t *exch, int argc, char *argv[])
{
        assert(exch);
        if (argc != 4 && argc != 5) {
                printf("%s [device] getvolume item channel\n", argv[0]);
        }
        unsigned params = argc == 5 ? 3 : 2;
        const unsigned item = get_number(argv[params++]);
        const unsigned channel = get_number(argv[params++]);
        unsigned value = 0, max = 0;

        int ret = audio_mixer_channel_volume_get(
            exch, item, channel, &value, &max);
        if (ret != EOK) {
                printf("Failed to get mixer volume: %s.\n", str_error(ret));
                return;
        }
        printf("Channel %u-%u volume: %u/%u.\n", item, channel, value, max);
}
/*----------------------------------------------------------------------------*/
int main(int argc, char *argv[])
{
        const char *device = DEFAULT_DEVICE;
        void (*command)(async_exch_t *, int, char*[]) = NULL;

        if (argc >= 2 && str_cmp(argv[1], "setvolume") == 0) {
                command = set_volume;
                if (argc == 6)
                        device = argv[1];
        }

        if (argc >= 2 && str_cmp(argv[1], "getvolume") == 0) {
                command = get_volume;
                if (argc == 5)
                        device = argv[1];
        }

        if ((argc == 2 && command == NULL))
                device = argv[1];


        devman_handle_t mixer_handle;
        int ret = devman_fun_get_handle(device, &mixer_handle, 0);
        if (ret != EOK) {
                printf("Failed to get device(%s) handle: %s.\n",
                    device, str_error(ret));
                return 1;
        }

        async_sess_t *session = devman_device_connect(
            EXCHANGE_ATOMIC, mixer_handle, IPC_FLAG_BLOCKING);
        if (!session) {
                printf("Failed to connect to device.\n");
                return 1;
        }

        async_exch_t *exch = async_exchange_begin(session);
        if (!exch) {
                printf("Failed to start session exchange.\n");
                async_hangup(session);
                return 1;
        }

        if (command) {
                command(exch, argc, argv);
        } else {
                print_levels(exch);
        }

        async_exchange_end(exch);
        async_hangup(session);
        return 0;
}

/** @}
 */