/*
  * Copyright (c) 2015 Paul B Mahol
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg 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
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "avformat.h"
 #include "internal.h"
 #include "pcm.h"
 

 static int wve_probe(const AVProbeData *p)

 {
     if (memcmp(p->buf, "ALawSoundFile**\0\017\020", 18) ||
         memcmp(p->buf + 22, "\0\0\0\1\0\0\0\0\0\0", 10))
         return 0;
     return AVPROBE_SCORE_MAX;
 }
 
 static int wve_read_header(AVFormatContext *s)
 {
     AVStream *st;
 
     st = avformat_new_stream(s, NULL);
     if (!st)
         return AVERROR(ENOMEM);
 
     avio_skip(s->pb, 18);
     st->duration           = avio_rb32(s->pb);

     st->codecpar->codec_type  = AVMEDIA_TYPE_AUDIO;
     st->codecpar->codec_id    = AV_CODEC_ID_PCM_ALAW;
     st->codecpar->sample_rate = 8000;
     st->codecpar->channels    = 1;
     st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
     st->codecpar->block_align = st->codecpar->bits_per_coded_sample * st->codecpar->channels / 8;
     avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);

     avio_skip(s->pb, 10);
 
     return 0;
 }
 
 AVInputFormat ff_wve_demuxer = {
     .name           = "wve",
     .long_name      = NULL_IF_CONFIG_SMALL("Psion 3 audio"),
     .read_probe     = wve_probe,
     .read_header    = wve_read_header,
     .read_packet    = ff_pcm_read_packet,
     .read_seek      = ff_pcm_read_seek,
 };