HelenOS sources

root/uspace/app/modplay/modplay.c

DEFINITIONS

1. modplay_key_press
2. modplay_event
3. print_syntax
4. main

/*
 * Copyright (c) 2014 Jiri Svoboda
 * 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 modplay
 * @{
 */
/**
 * @file
 */

#include <errno.h>
#include <hound/client.h>
#include <io/console.h>
#include <stdio.h>
#include <stdlib.h>
#include <str.h>
#include <str_error.h>
#include <trackmod.h>

static bool quit = false;

static void modplay_key_press(kbd_event_t *ev)
{
        if ((ev->mods & KM_ALT) == 0 &&
            (ev->mods & KM_SHIFT) == 0 &&
            (ev->mods & KM_CTRL) != 0) {
                if (ev->key == KC_Q)
                        quit = true;
        }
}

static void modplay_event(cons_event_t *event)
{
        switch (event->type) {
        case CEV_KEY:
                if (event->ev.key.type == KEY_PRESS) {
                        modplay_key_press(&event->ev.key);
                }
                break;
        default:
                break;
        }
}

static void print_syntax(void)
{
        printf("syntax: modplay [<options>] <filename.mod>\n");
        printf("options:\n");
        printf("\t-t <target>\tOutput to specified audio target.\n");
}

int main(int argc, char *argv[])
{
        trackmod_module_t *mod;
        trackmod_modplay_t *modplay;
        hound_context_t *hound;
        console_ctrl_t *con;
        cons_event_t event;
        usec_t timeout;
        pcm_format_t format;
        void *buffer;
        size_t buffer_size;
        const char *target = HOUND_DEFAULT_TARGET;
        errno_t rc;

        ++argv;
        --argc;

        while (argc > 0 && (*argv)[0] == '-') {
                if (str_cmp(*argv, "-t") == 0) {
                        ++argv;
                        --argc;

                        if (argc < 1) {
                                printf("Option '-t' requires an argument.\n");
                                print_syntax();
                                return 1;
                        }

                        target = *argv++;
                        --argc;
                        continue;
                }

                printf("Invalid option '%s'\n", *argv);
                print_syntax();
                return 1;
        }

        if (argc != 1) {
                print_syntax();
                return 1;
        }

        con = console_init(stdin, stdout);

        rc = trackmod_module_load(argv[0], &mod);
        if (rc != EOK) {
                printf("Error loading %s.\n", argv[0]);
                return 1;
        }

        format.channels = 1;
        format.sampling_rate = 44100;
#ifdef __LE__
        format.sample_format = PCM_SAMPLE_SINT16_LE;
#else
        format.sample_format = PCM_SAMPLE_SINT16_BE;
#endif
        buffer_size = 64 * 1024;

        buffer = malloc(buffer_size);
        if (buffer == NULL) {
                printf("Error allocating audio buffer.\n");
                return 1;
        }

        hound = hound_context_create_playback(argv[1], format, buffer_size);
        if (hound == NULL) {
                printf("Error creating playback context.\n");
                return 1;
        }

        rc = hound_context_connect_target(hound, target);
        if (rc != EOK) {
                printf("Error connecting audio target '%s': %s.\n",
                    target, str_error(rc));

                char **names = NULL;
                size_t count = 0;
                rc = hound_context_get_available_targets(hound, &names, &count);
                if (rc == EOK) {
                        printf("Available targets:\n");
                        for (size_t i = 0; i < count; i++)
                                printf(" - %s\n", names[i]);
                }

                return 1;
        }

        rc = trackmod_modplay_create(mod, format.sampling_rate, &modplay);
        if (rc != EOK) {
                printf("Error setting up playback.\n");
                return 1;
        }

        printf("Playing '%s'. Press Ctrl+Q to quit.\n", argv[1]);

        while (true) {
                timeout = 0;
                rc = console_get_event_timeout(con, &event, &timeout);
                if (rc == EOK)
                        modplay_event(&event);
                else if (rc != ETIMEOUT)
                        break;

                if (quit)
                        break;

                trackmod_modplay_get_samples(modplay, buffer, buffer_size / 4);

                rc = hound_write_main_stream(hound, buffer, buffer_size / 4);
                if (rc != EOK) {
                        printf("Error writing audio stream.\n");
                        break;
                }
        }

        hound_context_destroy(hound);
        trackmod_modplay_destroy(modplay);
        trackmod_module_destroy(mod);

        return 0;
}

/** @}
 */