| 0,0 → 1,96 |
|---|
| /* |
| * Copyright (c) 2012 Clément Bœsch |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * MPL2 subtitles decoder |
| * |
| * @see http://web.archive.org/web/20090328040233/http://napisy.ussbrowarek.org/mpl2-eng.html |
| */ |
| |
| #include "avcodec.h" |
| #include "ass.h" |
| #include "libavutil/bprint.h" |
| |
| static int mpl2_event_to_ass(AVBPrint *buf, const char *p) |
| { |
| if (*p == ' ') |
| p++; |
| |
| while (*p) { |
| int got_style = 0; |
| |
| while (*p && strchr("/\\_", *p)) { |
| if (*p == '/') av_bprintf(buf, "{\\i1}"); |
| else if (*p == '\\') av_bprintf(buf, "{\\b1}"); |
| else if (*p == '_') av_bprintf(buf, "{\\u1}"); |
| got_style = 1; |
| p++; |
| } |
| |
| while (*p && *p != '|') { |
| if (*p != '\r' && *p != '\n') |
| av_bprint_chars(buf, *p, 1); |
| p++; |
| } |
| |
| if (*p == '|') { |
| if (got_style) |
| av_bprintf(buf, "{\\r}"); |
| av_bprintf(buf, "\\N"); |
| p++; |
| } |
| } |
| |
| av_bprintf(buf, "\r\n"); |
| return 0; |
| } |
| |
| static int mpl2_decode_frame(AVCodecContext *avctx, void *data, |
| int *got_sub_ptr, AVPacket *avpkt) |
| { |
| AVBPrint buf; |
| AVSubtitle *sub = data; |
| const char *ptr = avpkt->data; |
| const int ts_start = av_rescale_q(avpkt->pts, avctx->time_base, (AVRational){1,100}); |
| const int ts_duration = avpkt->duration != -1 ? |
| av_rescale_q(avpkt->duration, avctx->time_base, (AVRational){1,100}) : -1; |
| |
| av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED); |
| if (ptr && avpkt->size > 0 && *ptr && !mpl2_event_to_ass(&buf, ptr)) { |
| if (!av_bprint_is_complete(&buf)) { |
| av_bprint_finalize(&buf, NULL); |
| return AVERROR(ENOMEM); |
| } |
| ff_ass_add_rect(sub, buf.str, ts_start, ts_duration, 0); |
| } |
| *got_sub_ptr = sub->num_rects > 0; |
| av_bprint_finalize(&buf, NULL); |
| return avpkt->size; |
| } |
| |
| AVCodec ff_mpl2_decoder = { |
| .name = "mpl2", |
| .long_name = NULL_IF_CONFIG_SMALL("MPL2 subtitle"), |
| .type = AVMEDIA_TYPE_SUBTITLE, |
| .id = AV_CODEC_ID_MPL2, |
| .decode = mpl2_decode_frame, |
| .init = ff_ass_subtitle_header_default, |
| }; |