LCOV - code coverage report
Current view: top level - libavformat - wvedec.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 3 20 15.0 %
Date: 2017-12-13 10:57:33 Functions: 1 2 50.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2015 Paul B Mahol
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : 
      21             : #include "avformat.h"
      22             : #include "internal.h"
      23             : #include "pcm.h"
      24             : 
      25        6130 : static int wve_probe(AVProbeData *p)
      26             : {
      27        6130 :     if (memcmp(p->buf, "ALawSoundFile**\0\017\020", 18) ||
      28           0 :         memcmp(p->buf + 22, "\0\0\0\1\0\0\0\0\0\0", 10))
      29        6130 :         return 0;
      30           0 :     return AVPROBE_SCORE_MAX;
      31             : }
      32             : 
      33           0 : static int wve_read_header(AVFormatContext *s)
      34             : {
      35             :     AVStream *st;
      36             : 
      37           0 :     st = avformat_new_stream(s, NULL);
      38           0 :     if (!st)
      39           0 :         return AVERROR(ENOMEM);
      40             : 
      41           0 :     avio_skip(s->pb, 18);
      42           0 :     st->duration           = avio_rb32(s->pb);
      43           0 :     st->codecpar->codec_type  = AVMEDIA_TYPE_AUDIO;
      44           0 :     st->codecpar->codec_id    = AV_CODEC_ID_PCM_ALAW;
      45           0 :     st->codecpar->sample_rate = 8000;
      46           0 :     st->codecpar->channels    = 1;
      47           0 :     st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
      48           0 :     st->codecpar->block_align = st->codecpar->bits_per_coded_sample * st->codecpar->channels / 8;
      49           0 :     avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
      50           0 :     avio_skip(s->pb, 10);
      51             : 
      52           0 :     return 0;
      53             : }
      54             : 
      55             : AVInputFormat ff_wve_demuxer = {
      56             :     .name           = "wve",
      57             :     .long_name      = NULL_IF_CONFIG_SMALL("Psion 3 audio"),
      58             :     .read_probe     = wve_probe,
      59             :     .read_header    = wve_read_header,
      60             :     .read_packet    = ff_pcm_read_packet,
      61             :     .read_seek      = ff_pcm_read_seek,
      62             : };

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