/* * This file is part of MPlayer. * * MPlayer is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * MPlayer 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 General Public License for more details. * * You should have received a copy of the GNU General Public License along * with MPlayer; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include #include #include #include #include "talloc.h" #include "mp_core.h" #include "mp_msg.h" #include "libmpdemux/demuxer.h" #include "osdep/findfiles.h" static int find_ordered_chapter_sources(struct MPContext *mpctx, struct content_source *sources, int num_sources, unsigned char uid_map[][16]) { int num_filenames = 0; char **filenames = NULL; if (num_sources > 1) { mp_msg(MSGT_CPLAYER, MSGL_INFO, "This file references data from " "other sources.\n"); if (mpctx->stream->type != STREAMTYPE_FILE) { mp_msg(MSGT_CPLAYER, MSGL_WARN, "Playback source is not a " "normal disk file. Will not search for related files.\n"); } else { mp_msg(MSGT_CPLAYER, MSGL_INFO, "Will scan other files in the " "same directory to find referenced sources.\n"); filenames = find_files(mpctx->demuxer->filename, ".mkv", &num_filenames); } } int num_left = num_sources - 1; for (int i = 0; i < num_filenames && num_left > 0; i++) { mp_msg(MSGT_CPLAYER, MSGL_INFO, "Checking file %s\n", filename_recode(filenames[i])); int format = 0; struct stream *s = open_stream(filenames[i], &mpctx->opts, &format); if (!s) continue; struct demuxer *d = demux_open(&mpctx->opts, s, DEMUXER_TYPE_MATROSKA, mpctx->opts.audio_id, mpctx->opts.video_id, mpctx->opts.sub_id, filenames[i]); if (!d) { free_stream(s); continue; } if (d->file_format == DEMUXER_TYPE_MATROSKA) { for (int i = 1; i < num_sources; i++) { if (sources[i].demuxer) continue; if (!memcmp(uid_map[i], d->matroska_data.segment_uid, 16)) { mp_msg(MSGT_CPLAYER, MSGL_INFO,"Match for source %d: %s\n", i, filename_recode(d->filename)); sources[i].stream = s; sources[i].demuxer = d; num_left--; goto match; } } } free_demuxer(d); free_stream(s); continue; match: ; } talloc_free(filenames); if (num_left) { mp_msg(MSGT_CPLAYER, MSGL_ERR, "Failed to find ordered chapter part!\n" "There will be parts MISSING from the video!\n"); for (int i = 1, j = 1; i < num_sources; i++) if (sources[i].demuxer) { sources[j] = sources[i]; memcpy(uid_map[j], uid_map[i], 16); j++; } } return num_sources - num_left; } void build_ordered_chapter_timeline(struct MPContext *mpctx) { struct MPOpts *opts = &mpctx->opts; if (!opts->ordered_chapters) { mp_msg(MSGT_CPLAYER, MSGL_INFO, "File uses ordered chapters, but " "you have disabled support for them. Ignoring.\n"); return; } mp_msg(MSGT_CPLAYER, MSGL_INFO, "File uses ordered chapters, will build " "edit timeline.\n"); struct demuxer *demuxer = mpctx->demuxer; struct matroska_data *m = &demuxer->matroska_data; // +1 because sources/uid_map[0] is original file even if all chapters // actually use other sources and need separate entries struct content_source *sources = talloc_array_ptrtype(NULL, sources, m->num_ordered_chapters+1); sources[0].stream = mpctx->stream; sources[0].demuxer = mpctx->demuxer; unsigned char uid_map[m->num_ordered_chapters+1][16]; int num_sources = 1; memcpy(uid_map[0], m->segment_uid, 16); for (int i = 0; i < m->num_ordered_chapters; i++) { struct matroska_chapter *c = m->ordered_chapters + i; if (!c->has_segment_uid) memcpy(c->segment_uid, m->segment_uid, 16); for (int j = 0; j < num_sources; j++) if (!memcmp(c->segment_uid, uid_map[j], 16)) goto found1; memcpy(uid_map[num_sources], c->segment_uid, 16); sources[num_sources] = (struct content_source){}; num_sources++; found1: ; } num_sources = find_ordered_chapter_sources(mpctx, sources, num_sources, uid_map); // +1 for terminating chapter with start time marking end of last real one struct timeline_part *timeline = talloc_array_ptrtype(NULL, timeline, m->num_ordered_chapters + 1); struct chapter *chapters = talloc_array_ptrtype(NULL, chapters, m->num_ordered_chapters); uint64_t starttime = 0; uint64_t missing_time = 0; int part_count = 0; int num_chapters = 0; uint64_t prev_part_offset = 0; for (int i = 0; i < m->num_ordered_chapters; i++) { struct matroska_chapter *c = m->ordered_chapters + i; int j; for (j = 0; j < num_sources; j++) { if (!memcmp(c->segment_uid, uid_map[j], 16)) goto found2; } missing_time += c->end - c->start; continue; found2:; /* Only add a separate part if the time or file actually changes. * Matroska files have chapter divisions that are redundant from * timeline point of view because the same chapter structure is used * both to specify the timeline and for normal chapter information. * Removing a missing inserted external chapter can also cause this. * We allow for a configurable fudge factor because of files which * specify chapter end times that are one frame too early; * we don't want to try seeking over a one frame gap. */ int64_t join_diff = c->start - starttime - prev_part_offset; if (part_count == 0 || FFABS(join_diff) > opts->chapter_merge_threshold * 1000000 || sources + j != timeline[part_count - 1].source) { timeline[part_count].source = sources + j; timeline[part_count].start = starttime / 1e9; timeline[part_count].source_start = c->start / 1e9; prev_part_offset = c->start - starttime; part_count++; } else if (part_count > 0 && join_diff) { /* Chapter was merged at an inexact boundary; * adjust timestamps to match. */ mp_msg(MSGT_CPLAYER, MSGL_V, "Merging timeline part %d with " "offset %d ms.\n", i, (int) join_diff); starttime += join_diff; } chapters[num_chapters].start = starttime / 1e9; chapters[num_chapters].name = talloc_strdup(chapters, c->name); starttime += c->end - c->start; num_chapters++; } timeline[part_count].start = starttime / 1e9; if (!part_count) { // None of the parts come from the file itself??? talloc_free(sources); talloc_free(timeline); talloc_free(chapters); return; } mp_msg(MSGT_CPLAYER, MSGL_V, "Timeline contains %d parts from %d " "sources. Total length %.3f seconds.\n", part_count, num_sources, timeline[part_count].start); if (missing_time) mp_msg(MSGT_CPLAYER, MSGL_ERR, "There are %.3f seconds missing " "from the timeline!\n", missing_time / 1e9); mp_msg(MSGT_CPLAYER, MSGL_V, "Source files:\n"); for (int i = 0; i < num_sources; i++) mp_msg(MSGT_CPLAYER, MSGL_V, "%d: %s\n", i, filename_recode(sources[i].demuxer->filename)); mp_msg(MSGT_CPLAYER, MSGL_V, "Timeline parts: (number, start, " "source_start, source):\n"); for (int i = 0; i < part_count; i++) { struct timeline_part *p = timeline + i; mp_msg(MSGT_CPLAYER, MSGL_V, "%3d %9.3f %9.3f %3td\n", i, p->start, p->source_start, p->source - sources); } mp_msg(MSGT_CPLAYER, MSGL_V, "END %9.3f\n", timeline[part_count].start); mpctx->sources = sources; mpctx->num_sources = num_sources; mpctx->timeline = timeline; mpctx->num_timeline_parts = part_count; mpctx->num_chapters = num_chapters; mpctx->chapters = chapters; mpctx->timeline_part = 0; mpctx->demuxer = timeline[0].source->demuxer; }