LCOV - code coverage report
Current view: top level - libavformat - rsodec.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 22 27 81.5 %
Date: 2017-12-12 11:08:38 Functions: 1 1 100.0 %

          Line data    Source code
       1             : /*
       2             :  * RSO demuxer
       3             :  * Copyright (c) 2001 Fabrice Bellard (original AU code)
       4             :  * Copyright (c) 2010 Rafael Carre
       5             :  *
       6             :  * This file is part of FFmpeg.
       7             :  *
       8             :  * FFmpeg is free software; you can redistribute it and/or
       9             :  * modify it under the terms of the GNU Lesser General Public
      10             :  * License as published by the Free Software Foundation; either
      11             :  * version 2.1 of the License, or (at your option) any later version.
      12             :  *
      13             :  * FFmpeg is distributed in the hope that it will be useful,
      14             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      15             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      16             :  * Lesser General Public License for more details.
      17             :  *
      18             :  * You should have received a copy of the GNU Lesser General Public
      19             :  * License along with FFmpeg; if not, write to the Free Software
      20             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      21             :  */
      22             : 
      23             : #include "libavutil/channel_layout.h"
      24             : #include "libavutil/intreadwrite.h"
      25             : #include "avformat.h"
      26             : #include "internal.h"
      27             : #include "pcm.h"
      28             : #include "rso.h"
      29             : 
      30           1 : static int rso_read_header(AVFormatContext *s)
      31             : {
      32           1 :     AVIOContext *pb = s->pb;
      33             :     int id, rate, bps;
      34             :     unsigned int size;
      35             :     enum AVCodecID codec;
      36             :     AVStream *st;
      37             : 
      38           1 :     id   = avio_rb16(pb);
      39           1 :     size = avio_rb16(pb);
      40           1 :     rate = avio_rb16(pb);
      41           1 :     avio_rb16(pb);   /* play mode ? (0x0000 = don't loop) */
      42             : 
      43           1 :     codec = ff_codec_get_id(ff_codec_rso_tags, id);
      44             : 
      45           1 :     if (codec == AV_CODEC_ID_ADPCM_IMA_WAV) {
      46           0 :         avpriv_report_missing_feature(s, "ADPCM in RSO");
      47           0 :         return AVERROR_PATCHWELCOME;
      48             :     }
      49             : 
      50           1 :     bps = av_get_bits_per_sample(codec);
      51           1 :     if (!bps) {
      52           0 :         avpriv_request_sample(s, "Unknown bits per sample");
      53           0 :         return AVERROR_PATCHWELCOME;
      54             :     }
      55             : 
      56             :     /* now we are ready: build format streams */
      57           1 :     st = avformat_new_stream(s, NULL);
      58           1 :     if (!st)
      59           0 :         return AVERROR(ENOMEM);
      60             : 
      61           1 :     st->duration            = (size * 8) / bps;
      62           1 :     st->codecpar->codec_type   = AVMEDIA_TYPE_AUDIO;
      63           1 :     st->codecpar->codec_tag    = id;
      64           1 :     st->codecpar->codec_id     = codec;
      65           1 :     st->codecpar->channels     = 1;
      66           1 :     st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
      67           1 :     st->codecpar->sample_rate  = rate;
      68           1 :     st->codecpar->block_align  = 1;
      69             : 
      70           1 :     avpriv_set_pts_info(st, 64, 1, rate);
      71             : 
      72           1 :     return 0;
      73             : }
      74             : 
      75             : AVInputFormat ff_rso_demuxer = {
      76             :     .name           =   "rso",
      77             :     .long_name      =   NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO"),
      78             :     .extensions     =   "rso",
      79             :     .read_header    =   rso_read_header,
      80             :     .read_packet    =   ff_pcm_read_packet,
      81             :     .read_seek      =   ff_pcm_read_seek,
      82             :     .codec_tag      =   (const AVCodecTag* const []){ff_codec_rso_tags, 0},
      83             : };

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