mirror of https://github.com/FFmpeg/FFmpeg.git
Eejya Singh
10 years ago
committed by
Clément Bœsch
parent
27c61c32ce
commit
6dc99fdf0e
14 changed files with 208 additions and 5 deletions
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/*
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* Copyright (c) 2014 Eejya Singh |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/**
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* @file |
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* STL subtitles format demuxer |
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* @see https://documentation.apple.com/en/dvdstudiopro/usermanual/index.html#chapter=19%26section=13%26tasks=true
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*/ |
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#include "avformat.h" |
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#include "internal.h" |
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#include "subtitles.h" |
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#include "libavutil/intreadwrite.h" |
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#include "libavutil/avstring.h" |
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typedef struct { |
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FFDemuxSubtitlesQueue q; |
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} STLContext; |
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static int stl_probe(AVProbeData *p) |
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{ |
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char c; |
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const unsigned char *ptr = p->buf; |
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if (AV_RB24(ptr) == 0xEFBBBF) |
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ptr += 3; /* skip UTF-8 BOM */ |
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while (*ptr == '\r' || *ptr == '\n' || *ptr == '$' || !strncmp(ptr, "//" , 2)) |
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ptr += ff_subtitles_next_line(ptr); |
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if (sscanf(ptr, "%*d:%*d:%*d:%*d , %*d:%*d:%*d:%*d , %c", &c) == 1) |
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return AVPROBE_SCORE_MAX; |
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return 0; |
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} |
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static int64_t get_pts(char **buf, int *duration) |
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{ |
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int hh1, mm1, ss1, ms1; |
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int hh2, mm2, ss2, ms2; |
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int len = 0; |
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if (sscanf(*buf, "%2d:%2d:%2d:%2d , %2d:%2d:%2d:%2d , %n", |
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&hh1, &mm1, &ss1, &ms1, |
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&hh2, &mm2, &ss2, &ms2, &len) >= 8 && len > 0) { |
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int64_t start = (hh1*3600LL + mm1*60LL + ss1) * 100LL + ms1; |
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int64_t end = (hh2*3600LL + mm2*60LL + ss2) * 100LL + ms2; |
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*duration = end - start; |
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*buf += len; |
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return start; |
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} |
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return AV_NOPTS_VALUE; |
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} |
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static int stl_read_header(AVFormatContext *s) |
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{ |
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STLContext *stl = s->priv_data; |
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AVStream *st = avformat_new_stream(s, NULL); |
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if (!st) |
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return AVERROR(ENOMEM); |
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avpriv_set_pts_info(st, 64, 1, 100); |
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st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; |
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st->codec->codec_id = AV_CODEC_ID_STL; |
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while (!avio_feof(s->pb)) { |
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char line[4096]; |
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char *p = line; |
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const int64_t pos = avio_tell(s->pb); |
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int len = ff_get_line(s->pb, line, sizeof(line)); |
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int64_t pts_start; |
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int duration; |
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if (!len) |
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break; |
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line[strcspn(line, "\r\n")] = 0; |
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pts_start = get_pts(&p , &duration); |
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if (pts_start != AV_NOPTS_VALUE) { |
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AVPacket *sub; |
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sub = ff_subtitles_queue_insert(&stl->q, p, strlen(p), 0); |
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if (!sub) |
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return AVERROR(ENOMEM); |
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sub->pos = pos; |
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sub->pts = pts_start; |
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sub->duration = duration; |
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} |
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} |
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ff_subtitles_queue_finalize(&stl->q); |
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return 0; |
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} |
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static int stl_read_packet(AVFormatContext *s, AVPacket *pkt) |
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{ |
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STLContext *stl = s->priv_data; |
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return ff_subtitles_queue_read_packet(&stl->q, pkt); |
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} |
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static int stl_read_seek(AVFormatContext *s, int stream_index, |
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int64_t min_ts, int64_t ts, int64_t max_ts, int flags) |
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{ |
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STLContext *stl = s->priv_data; |
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return ff_subtitles_queue_seek(&stl->q, s, stream_index, |
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min_ts, ts, max_ts, flags); |
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} |
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static int stl_read_close(AVFormatContext *s) |
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{ |
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STLContext *stl = s->priv_data; |
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ff_subtitles_queue_clean(&stl->q); |
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return 0; |
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} |
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AVInputFormat ff_stl_demuxer = { |
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.name = "stl", |
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.long_name = NULL_IF_CONFIG_SMALL("Spruce subtitle format"), |
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.priv_data_size = sizeof(STLContext), |
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.read_probe = stl_probe, |
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.read_header = stl_read_header, |
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.read_packet = stl_read_packet, |
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.read_seek2 = stl_read_seek, |
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.read_close = stl_read_close, |
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.extensions = "stl", |
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}; |
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@ -0,0 +1,29 @@ |
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[Script Info] |
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; Script generated by FFmpeg/Lavc |
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ScriptType: v4.00+ |
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PlayResX: 384 |
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PlayResY: 288 |
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[V4+ Styles] |
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Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding |
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Style: Default,Arial,16,&Hffffff,&Hffffff,&H0,&H0,0,0,0,0,100,100,0,0,1,1,0,2,10,10,10,0 |
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[Events] |
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Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text |
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Dialogue: 0,0:00:31.02,0:00:33.00,Default,,0,0,0,,Hello, my name is Axel Kornmesser. |
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Dialogue: 0,0:00:45.02,0:00:49.13,Default,,0,0,0,,It is always a pleasure to work with ESA astronomers. |
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Dialogue: 0,0:00:49.13,0:00:52.03,Default,,0,0,0,,The "Eyes on The Skies" documentary |
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Dialogue: 0,0:00:52.03,0:00:55.09,Default,,0,0,0,,was our second collaboration |
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Dialogue: 0,0:00:55.09,0:00:58.07,Default,,0,0,0,,after a great \Nexperience in 2005, |
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Dialogue: 0,0:00:58.07,0:00:59.20,Default,,0,0,0,,when \Nwe did the story about the |
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Dialogue: 0,0:00:59.20,0:01:04.01,Default,,0,0,0,,Hubble Telescope "15 Years of Discovery". |
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Dialogue: 0,0:01:04.16,0:01:07.04,Default,,0,0,0,,It was a lot of fun again. |
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Dialogue: 0,0:01:15.04,0:01:18.16,Default,,0,0,0,,We usually \N don't get the final film \Nbefore we start composing |
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Dialogue: 0,0:01:18.21,0:01:22.02,Default,,0,0,0,,We had a script and many details about the story, |
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Dialogue: 0,0:01:22.10,0:01:26.08,Default,,0,0,0,,and so we worked\N in parallel \Nin the movie production |
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Dialogue: 0,0:01:27.04,0:01:30.17,Default,,0,0,0,,The largest part of \N the soundtrack \Nwas done without seeing a movie |
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Dialogue: 0,0:01:30.17,0:01:36.06,Default,,0,0,0,,It was no problem, but very inspiring \Nand a free working process. |
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Dialogue: 0,0:02:08.13,0:02:10.23,Default,,0,0,0,,Galileo's theme is one of my favourites. |
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Dialogue: 0,0:02:10.23,0:02:14.10,Default,,0,0,0,,We did a lot of different versions \Nabout the central theme. |
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Dialogue: 0,0:02:14.10,0:02:18.02,Default,,0,0,0,,For the 17th century \N we used a nice harpsichord |
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Dialogue: 0,0:02:19.05,0:02:22.09,Default,,0,0,0,,and so we landed directly into Galileo's time. |
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