diff options
Diffstat (limited to 'ffmpeg1/libavformat/subviewerdec.c')
| -rw-r--r-- | ffmpeg1/libavformat/subviewerdec.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/ffmpeg1/libavformat/subviewerdec.c b/ffmpeg1/libavformat/subviewerdec.c deleted file mode 100644 index 7cacd97..0000000 --- a/ffmpeg1/libavformat/subviewerdec.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - * 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 - * SubViewer subtitle demuxer - * @see https://en.wikipedia.org/wiki/SubViewer - */ - -#include "avformat.h" -#include "internal.h" -#include "subtitles.h" -#include "libavcodec/internal.h" -#include "libavutil/avstring.h" -#include "libavutil/bprint.h" -#include "libavutil/intreadwrite.h" - -typedef struct { - FFDemuxSubtitlesQueue q; -} SubViewerContext; - -static int subviewer_probe(AVProbeData *p) -{ - char c; - const unsigned char *ptr = p->buf; - - if (AV_RB24(ptr) == 0xEFBBBF) - ptr += 3; /* skip UTF-8 BOM */ - if (sscanf(ptr, "%*u:%*u:%*u.%*u,%*u:%*u:%*u.%*u%c", &c) == 1) - return AVPROBE_SCORE_MAX/2; - if (!strncmp(ptr, "[INFORMATION]", 13)) - return AVPROBE_SCORE_MAX/3; - return 0; -} - -static int read_ts(const char *s, int64_t *start, int *duration) -{ - int64_t end; - int hh1, mm1, ss1, ms1; - int hh2, mm2, ss2, ms2; - - if (sscanf(s, "%u:%u:%u.%u,%u:%u:%u.%u", - &hh1, &mm1, &ss1, &ms1, &hh2, &mm2, &ss2, &ms2) == 8) { - end = (hh2*3600LL + mm2*60LL + ss2) * 100LL + ms2; - *start = (hh1*3600LL + mm1*60LL + ss1) * 100LL + ms1; - *duration = end - *start; - return 0; - } - return -1; -} - -static int subviewer_read_header(AVFormatContext *s) -{ - SubViewerContext *subviewer = s->priv_data; - AVStream *st = avformat_new_stream(s, NULL); - AVBPrint header; - int res = 0, new_event = 1; - int64_t pts_start = AV_NOPTS_VALUE; - int duration = -1; - AVPacket *sub = NULL; - - if (!st) - return AVERROR(ENOMEM); - avpriv_set_pts_info(st, 64, 1, 100); - st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; - st->codec->codec_id = AV_CODEC_ID_SUBVIEWER; - - av_bprint_init(&header, 0, AV_BPRINT_SIZE_UNLIMITED); - - while (!url_feof(s->pb)) { - char line[2048]; - int64_t pos = 0; - int len = ff_get_line(s->pb, line, sizeof(line)); - - if (!len) - break; - - line[strcspn(line, "\r\n")] = 0; - - if (line[0] == '[' && strncmp(line, "[br]", 4)) { - - /* ignore event style, XXX: add to side_data? */ - if (strstr(line, "[COLF]") || strstr(line, "[SIZE]") || - strstr(line, "[FONT]") || strstr(line, "[STYLE]")) - continue; - - if (!st->codec->extradata) { // header not finalized yet - av_bprintf(&header, "%s\n", line); - if (!strncmp(line, "[END INFORMATION]", 17) || !strncmp(line, "[SUBTITLE]", 10)) { - /* end of header */ - res = avpriv_bprint_to_extradata(st->codec, &header); - if (res < 0) - goto end; - } else if (strncmp(line, "[INFORMATION]", 13)) { - /* assume file metadata at this point */ - int i, j = 0; - char key[32], value[128]; - - for (i = 1; i < sizeof(key) - 1 && line[i] && line[i] != ']'; i++) - key[i - 1] = av_tolower(line[i]); - key[i - 1] = 0; - - if (line[i] == ']') - i++; - while (line[i] == ' ') - i++; - while (j < sizeof(value) - 1 && line[i] && line[i] != ']') - value[j++] = line[i++]; - value[j] = 0; - - av_dict_set(&s->metadata, key, value, 0); - } - } - } else if (read_ts(line, &pts_start, &duration) >= 0) { - new_event = 1; - pos = avio_tell(s->pb); - } else if (*line) { - if (!new_event) { - sub = ff_subtitles_queue_insert(&subviewer->q, "\n", 1, 1); - if (!sub) { - res = AVERROR(ENOMEM); - goto end; - } - } - sub = ff_subtitles_queue_insert(&subviewer->q, line, strlen(line), !new_event); - if (!sub) { - res = AVERROR(ENOMEM); - goto end; - } - if (new_event) { - sub->pos = pos; - sub->pts = pts_start; - sub->duration = duration; - } - new_event = 0; - } - } - - ff_subtitles_queue_finalize(&subviewer->q); - -end: - av_bprint_finalize(&header, NULL); - return res; -} - -static int subviewer_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - SubViewerContext *subviewer = s->priv_data; - return ff_subtitles_queue_read_packet(&subviewer->q, pkt); -} - -static int subviewer_read_seek(AVFormatContext *s, int stream_index, - int64_t min_ts, int64_t ts, int64_t max_ts, int flags) -{ - SubViewerContext *subviewer = s->priv_data; - return ff_subtitles_queue_seek(&subviewer->q, s, stream_index, - min_ts, ts, max_ts, flags); -} - -static int subviewer_read_close(AVFormatContext *s) -{ - SubViewerContext *subviewer = s->priv_data; - ff_subtitles_queue_clean(&subviewer->q); - return 0; -} - -AVInputFormat ff_subviewer_demuxer = { - .name = "subviewer", - .long_name = NULL_IF_CONFIG_SMALL("SubViewer subtitle format"), - .priv_data_size = sizeof(SubViewerContext), - .read_probe = subviewer_probe, - .read_header = subviewer_read_header, - .read_packet = subviewer_read_packet, - .read_seek2 = subviewer_read_seek, - .read_close = subviewer_read_close, - .extensions = "sub", -}; |