LCOV - code coverage report
Current view: top level - src/libavformat - afc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 26 0.0 %
Date: 2017-01-24 04:42:20 Functions: 0 2 0.0 %

          Line data    Source code
       1             : /*
       2             :  * AFC demuxer
       3             :  * Copyright (c) 2012 Paul B Mahol
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #include "libavutil/channel_layout.h"
      23             : #include "avformat.h"
      24             : #include "internal.h"
      25             : 
      26             : typedef struct AFCDemuxContext {
      27             :     int64_t    data_end;
      28             : } AFCDemuxContext;
      29             : 
      30           0 : static int afc_read_header(AVFormatContext *s)
      31             : {
      32           0 :     AFCDemuxContext *c = s->priv_data;
      33             :     AVStream *st;
      34             : 
      35           0 :     st = avformat_new_stream(s, NULL);
      36           0 :     if (!st)
      37           0 :         return AVERROR(ENOMEM);
      38           0 :     st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
      39           0 :     st->codecpar->codec_id   = AV_CODEC_ID_ADPCM_AFC;
      40           0 :     st->codecpar->channels   = 2;
      41           0 :     st->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
      42             : 
      43           0 :     if (ff_alloc_extradata(st->codecpar, 1))
      44           0 :         return AVERROR(ENOMEM);
      45           0 :     st->codecpar->extradata[0] = 8 * st->codecpar->channels;
      46             : 
      47           0 :     c->data_end = avio_rb32(s->pb) + 32LL;
      48           0 :     st->duration = avio_rb32(s->pb);
      49           0 :     st->codecpar->sample_rate = avio_rb16(s->pb);
      50           0 :     avio_skip(s->pb, 22);
      51           0 :     avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
      52             : 
      53           0 :     return 0;
      54             : }
      55             : 
      56           0 : static int afc_read_packet(AVFormatContext *s, AVPacket *pkt)
      57             : {
      58           0 :     AFCDemuxContext *c = s->priv_data;
      59             :     int64_t size;
      60             :     int ret;
      61             : 
      62           0 :     size = FFMIN(c->data_end - avio_tell(s->pb), 18 * 128);
      63           0 :     if (size <= 0)
      64           0 :         return AVERROR_EOF;
      65             : 
      66           0 :     ret = av_get_packet(s->pb, pkt, size);
      67           0 :     pkt->stream_index = 0;
      68           0 :     return ret;
      69             : }
      70             : 
      71             : AVInputFormat ff_afc_demuxer = {
      72             :     .name           = "afc",
      73             :     .long_name      = NULL_IF_CONFIG_SMALL("AFC"),
      74             :     .priv_data_size = sizeof(AFCDemuxContext),
      75             :     .read_header    = afc_read_header,
      76             :     .read_packet    = afc_read_packet,
      77             :     .extensions     = "afc",
      78             :     .flags          = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK,
      79             : };

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