source: mainline/uspace/app/wavplay/main.c@ fa91c0f

/*
 * Copyright (c) 2012 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 wavplay
 * @{
 */
/**
 * @file PCM playback audio devices
 */

#include <assert.h>
#include <errno.h>
#include <fibril_synch.h>
#include <str_error.h>
#include <stdio.h>
#include <hound/client.h>
#include <pcm/sample_format.h>
#include <getopt.h>

#include "dplay.h"
#include "wave.h"

#define NAME_MAX 32
char name[NAME_MAX + 1];

typedef struct {
        FILE* source;
        volatile bool playing;
        fibril_mutex_t mutex;
        fibril_condvar_t cv;
        hound_sess_t *server;
} playback_t;

static void playback_initialize(playback_t *pb, hound_sess_t *sess)
{
        assert(pb);
        pb->playing = false;
        pb->source = NULL;
        pb->server = sess;
        fibril_mutex_initialize(&pb->mutex);
        fibril_condvar_initialize(&pb->cv);
}


static void data_callback(void* arg, void *buffer, ssize_t size)
{
        playback_t *pb = arg;
        assert(pb);

        if (size > 0) {
                const ssize_t bytes =
                    fread(buffer, sizeof(uint8_t), size, pb->source);
                printf("%zu bytes ready\n", bytes);
                if (bytes < size) {
                        printf(" requested: %zd ready: %zd zero: %zd\n",
                                size, bytes, size - bytes);
                        bzero(buffer + bytes, size - bytes);
                }
                if (bytes == 0) {
                        pb->playing = false;
                        printf("The end, nothing more to play.\n");
                        fibril_condvar_signal(&pb->cv);
                }
        } else {
                printf("Got error %s.\n", str_error(size));
                pb->playing = false;
                fibril_condvar_signal(&pb->cv);
        }
}

static void play(playback_t *pb, unsigned channels, unsigned rate, pcm_sample_format_t format)
{
        assert(pb);
        /* Create playback client */
        int ret = hound_register_playback(pb->server, name, channels, rate,
            format, data_callback, pb);
        if (ret != EOK) {
                printf("Failed to register playback: %s\n", str_error(ret));
                return;
        }

        /* Connect */
        ret = hound_create_connection(pb->server, name, DEFAULT_SINK);
        if (ret == EOK) {
                fibril_mutex_lock(&pb->mutex);
                for (pb->playing = true; pb->playing;
                    fibril_condvar_wait(&pb->cv, &pb->mutex));
                fibril_mutex_unlock(&pb->mutex);

                hound_destroy_connection(pb->server, name, DEFAULT_SINK);
        } else
                printf("Failed to connect: %s\n", str_error(ret));

        printf("Unregistering playback\n");
        hound_unregister_playback(pb->server, name);
}

static const struct option opts[] = {
        {"device", required_argument, 0, 'd'},
        {"record", no_argument, 0, 'r'},
        {0, 0, 0, 0}
};


int main(int argc, char *argv[])
{
        const char *device = "default";
        int idx = 0;
        bool direct = false, record = false;
        optind = 0;
        int ret = 0;
        while (ret != -1) {
                ret = getopt_long(argc, argv, "d:r", opts, &idx);
                switch (ret) {
                case 'd':
                        direct = true;
                        device = optarg;
                        break;
                case 'r':
                        record = true;
                        break;
                };
        }

        if (optind == argc) {
                printf("Not enough arguments.\n");
                return 1;
        }
        const char *file = argv[optind];

        printf("%s %s\n", record ? "Recording" : "Playing", file);
        if (record) {
                printf("Recording is not supported yet.\n");
                return 1;
        }
        if (direct)
                return dplay(device, file);

        task_id_t tid = task_get_id();
        snprintf(name, NAME_MAX, "%s%" PRIu64 ":%s", argv[0], tid, file);

        printf("Client name: %s\n", name);

        hound_sess_t *sess = hound_get_session();
        if (!sess) {
                printf("Failed to connect to hound service\n");
                return 1;
        }

        playback_t pb;
        playback_initialize(&pb, sess);
        pb.source = fopen(file, "rb");
        if (pb.source == NULL) {
                printf("Failed to open %s.\n", file);
                hound_release_session(sess);
                return 1;
        }
        wave_header_t header;
        fread(&header, sizeof(header), 1, pb.source);
        unsigned rate, channels;
        pcm_sample_format_t format;
        const char *error;
        ret = wav_parse_header(&header, NULL, NULL, &channels, &rate,
            &format, &error);
        if (ret != EOK) {
                printf("Error parsing wav header: %s.\n", error);
                fclose(pb.source);
                hound_release_session(sess);
                return 1;
        }

        play(&pb, channels, rate, format);

        printf("Releasing session\n");
        hound_release_session(sess);
        return 0;
}
/**
 * @}
 */