mpv/demux/demux_cue.c

/*
 * This file is part of MPlayer.
 *
 * MPlayer is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * MPlayer 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <stdlib.h>
#include <stdbool.h>
#include <string.h>

#include "core/bstr.h"
#include "demux.h"
#include "stream/stream.h"

// timeline/tl_cue.c
bool mp_probe_cue(struct bstr s);

#define PROBE_SIZE 512

static int try_open_file(struct demuxer *demuxer)
{
    struct stream *s = demuxer->stream;
    char buf[PROBE_SIZE];
    int len = stream_read(s, buf, sizeof(buf));
    if (len <= 0)
        return 0;
    if (!mp_probe_cue((struct bstr) { buf, len }))
        return 0;
    stream_seek(s, 0);
    demuxer->file_contents = stream_read_complete(s, demuxer, 1000000, 0);
    if (demuxer->file_contents.start == NULL)
        return 0;
    if (!mp_probe_cue((struct bstr) { buf, len }))
        return 0;
    return DEMUXER_TYPE_CUE;
}

static int dummy_fill_buffer(struct demuxer *demuxer, struct demux_stream *ds)
{
    return 0;
}

const struct demuxer_desc demuxer_desc_cue = {
    .info = "CUE file demuxer",
    .name = "cue",
    .shortdesc = "CUE",
    .author = "Uoti Urpala",
    .comment = "",
    .type = DEMUXER_TYPE_CUE,
    .safe_check = true,
    .check_file = try_open_file,       // no separate .open
    .fill_buffer = dummy_fill_buffer,
};