LCOV - code coverage report
Current view: top level - libavcodec - mpl2dec.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 33 34 97.1 %
Date: 2017-12-15 18:13:28 Functions: 2 2 100.0 %

          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             :  * MPL2 subtitles decoder
      24             :  *
      25             :  * @see http://web.archive.org/web/20090328040233/http://napisy.ussbrowarek.org/mpl2-eng.html
      26             :  */
      27             : 
      28             : #include "avcodec.h"
      29             : #include "ass.h"
      30             : #include "libavutil/bprint.h"
      31             : 
      32           4 : static int mpl2_event_to_ass(AVBPrint *buf, const char *p)
      33             : {
      34           4 :     if (*p == ' ')
      35           2 :         p++;
      36             : 
      37          17 :     while (*p) {
      38           9 :         int got_style = 0;
      39             : 
      40          23 :         while (*p && strchr("/\\_", *p)) {
      41           5 :             if      (*p == '/')  av_bprintf(buf, "{\\i1}");
      42           3 :             else if (*p == '\\') av_bprintf(buf, "{\\b1}");
      43           1 :             else if (*p == '_')  av_bprintf(buf, "{\\u1}");
      44           5 :             got_style = 1;
      45           5 :             p++;
      46             :         }
      47             : 
      48          67 :         while (*p && *p != '|') {
      49          49 :             if (*p != '\r' && *p != '\n')
      50          49 :                 av_bprint_chars(buf, *p, 1);
      51          49 :             p++;
      52             :         }
      53             : 
      54           9 :         if (*p == '|') {
      55           5 :             if (got_style)
      56           3 :                 av_bprintf(buf, "{\\r}");
      57           5 :             av_bprintf(buf, "\\N");
      58           5 :             p++;
      59             :         }
      60             :     }
      61             : 
      62           4 :     return 0;
      63             : }
      64             : 
      65           4 : static int mpl2_decode_frame(AVCodecContext *avctx, void *data,
      66             :                              int *got_sub_ptr, AVPacket *avpkt)
      67             : {
      68           4 :     int ret = 0;
      69             :     AVBPrint buf;
      70           4 :     AVSubtitle *sub = data;
      71           4 :     const char *ptr = avpkt->data;
      72           4 :     FFASSDecoderContext *s = avctx->priv_data;
      73             : 
      74           4 :     av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
      75           4 :     if (ptr && avpkt->size > 0 && *ptr && !mpl2_event_to_ass(&buf, ptr))
      76           4 :         ret = ff_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL);
      77           4 :     av_bprint_finalize(&buf, NULL);
      78           4 :     if (ret < 0)
      79           0 :         return ret;
      80           4 :     *got_sub_ptr = sub->num_rects > 0;
      81           4 :     return avpkt->size;
      82             : }
      83             : 
      84             : AVCodec ff_mpl2_decoder = {
      85             :     .name           = "mpl2",
      86             :     .long_name      = NULL_IF_CONFIG_SMALL("MPL2 subtitle"),
      87             :     .type           = AVMEDIA_TYPE_SUBTITLE,
      88             :     .id             = AV_CODEC_ID_MPL2,
      89             :     .decode         = mpl2_decode_frame,
      90             :     .init           = ff_ass_subtitle_header_default,
      91             :     .flush          = ff_ass_decoder_flush,
      92             :     .priv_data_size = sizeof(FFASSDecoderContext),
      93             : };

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