summaryrefslogtreecommitdiffstats
path: root/timeline
diff options
context:
space:
mode:
authorUoti Urpala <uau@glyph.nonexistent.invalid>2011-02-14 09:34:39 +0200
committerUoti Urpala <uau@glyph.nonexistent.invalid>2011-02-26 16:34:42 +0200
commite8af22db818f839f5ac25a309e8838ea53e831b2 (patch)
tree5a7ecf9640d800f311ef3941be1641000608a49f /timeline
parentf7643ddde624451b01f2cab688b733326b7b8ca5 (diff)
downloadmpv-e8af22db818f839f5ac25a309e8838ea53e831b2.tar.bz2
mpv-e8af22db818f839f5ac25a309e8838ea53e831b2.tar.xz
core: ordered chapters: move timeline creation to timeline/
Add new file timeline/tl_matroska.c. Move the code that parses ordered chapter information from Matroska files and creates the timeline structure based on that to the new file. Initialize the format parameter given to open_stream() in the moved code. The previous uninitialized value shouldn't have caused any visible effects.
Diffstat (limited to 'timeline')
-rw-r--r--timeline/tl_matroska.c234
1 files changed, 234 insertions, 0 deletions
diff --git a/timeline/tl_matroska.c b/timeline/tl_matroska.c
new file mode 100644
index 0000000000..3c4b34d19d
--- /dev/null
+++ b/timeline/tl_matroska.c
@@ -0,0 +1,234 @@
+/*
+ * 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 <stdlib.h>
+#include <stdbool.h>
+#include <inttypes.h>
+#include <libavutil/common.h>
+
+#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;
+}