LCOV - code coverage report
Current view: top level - libavformat - vplayerdec.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 41 47 87.2 %
Date: 2017-12-14 01:15:32 Functions: 5 6 83.3 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2012 Clément Bœsch
       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             : /**
      22             :  * @file
      23             :  * VPlayer subtitles format demuxer
      24             :  */
      25             : 
      26             : #include "avformat.h"
      27             : #include "internal.h"
      28             : #include "subtitles.h"
      29             : 
      30             : typedef struct {
      31             :     FFDemuxSubtitlesQueue q;
      32             : } VPlayerContext;
      33             : 
      34        6130 : static int vplayer_probe(AVProbeData *p)
      35             : {
      36             :     char c;
      37        6130 :     const unsigned char *ptr = p->buf;
      38             : 
      39       12259 :     if ((sscanf(ptr, "%*3d:%*2d:%*2d.%*2d%c", &c) == 1 ||
      40        6130 :          sscanf(ptr, "%*3d:%*2d:%*2d%c",      &c) == 1) && strchr(": =", c))
      41           1 :         return AVPROBE_SCORE_MAX;
      42        6129 :     return 0;
      43             : }
      44             : 
      45           3 : static int64_t read_ts(char **line)
      46             : {
      47             :     char c;
      48             :     int hh, mm, ss, ms, n, len;
      49             : 
      50           3 :     if (((n = sscanf(*line, "%d:%d:%d.%d%c%n", &hh, &mm, &ss, &ms, &c, &len)) >= 5 ||
      51           3 :          (n = sscanf(*line, "%d:%d:%d%c%n",    &hh, &mm, &ss,      &c, &len)) >= 4) && strchr(": =", c)) {
      52           3 :         *line += len;
      53           3 :         return (hh*3600LL + mm*60LL + ss) * 100LL + (n < 5 ? 0 : ms);
      54             :     }
      55           0 :     return AV_NOPTS_VALUE;
      56             : }
      57             : 
      58           1 : static int vplayer_read_header(AVFormatContext *s)
      59             : {
      60           1 :     VPlayerContext *vplayer = s->priv_data;
      61           1 :     AVStream *st = avformat_new_stream(s, NULL);
      62             : 
      63           1 :     if (!st)
      64           0 :         return AVERROR(ENOMEM);
      65           1 :     avpriv_set_pts_info(st, 64, 1, 100);
      66           1 :     st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
      67           1 :     st->codecpar->codec_id   = AV_CODEC_ID_VPLAYER;
      68             : 
      69           5 :     while (!avio_feof(s->pb)) {
      70             :         char line[4096];
      71           4 :         char *p = line;
      72           4 :         const int64_t pos = avio_tell(s->pb);
      73           4 :         int len = ff_get_line(s->pb, line, sizeof(line));
      74             :         int64_t pts_start;
      75             : 
      76           4 :         if (!len)
      77           1 :             break;
      78             : 
      79           3 :         line[strcspn(line, "\r\n")] = 0;
      80             : 
      81           3 :         pts_start = read_ts(&p);
      82           3 :         if (pts_start != AV_NOPTS_VALUE) {
      83             :             AVPacket *sub;
      84             : 
      85           3 :             sub = ff_subtitles_queue_insert(&vplayer->q, p, strlen(p), 0);
      86           3 :             if (!sub)
      87           0 :                 return AVERROR(ENOMEM);
      88           3 :             sub->pos = pos;
      89           3 :             sub->pts = pts_start;
      90           3 :             sub->duration = -1;
      91             :         }
      92             :     }
      93             : 
      94           1 :     ff_subtitles_queue_finalize(s, &vplayer->q);
      95           1 :     return 0;
      96             : }
      97             : 
      98           4 : static int vplayer_read_packet(AVFormatContext *s, AVPacket *pkt)
      99             : {
     100           4 :     VPlayerContext *vplayer = s->priv_data;
     101           4 :     return ff_subtitles_queue_read_packet(&vplayer->q, pkt);
     102             : }
     103             : 
     104           0 : static int vplayer_read_seek(AVFormatContext *s, int stream_index,
     105             :                              int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
     106             : {
     107           0 :     VPlayerContext *vplayer = s->priv_data;
     108           0 :     return ff_subtitles_queue_seek(&vplayer->q, s, stream_index,
     109             :                                    min_ts, ts, max_ts, flags);
     110             : }
     111             : 
     112           1 : static int vplayer_read_close(AVFormatContext *s)
     113             : {
     114           1 :     VPlayerContext *vplayer = s->priv_data;
     115           1 :     ff_subtitles_queue_clean(&vplayer->q);
     116           1 :     return 0;
     117             : }
     118             : 
     119             : AVInputFormat ff_vplayer_demuxer = {
     120             :     .name           = "vplayer",
     121             :     .long_name      = NULL_IF_CONFIG_SMALL("VPlayer subtitles"),
     122             :     .priv_data_size = sizeof(VPlayerContext),
     123             :     .read_probe     = vplayer_probe,
     124             :     .read_header    = vplayer_read_header,
     125             :     .read_packet    = vplayer_read_packet,
     126             :     .read_seek2     = vplayer_read_seek,
     127             :     .read_close     = vplayer_read_close,
     128             :     .extensions     = "txt",
     129             : };

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