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mpv/timeline/tl_matroska.c
wm4 a1244111a7 windows support: unicode filenames 
Windows uses a legacy codepage for char* / runtime functions accepting
char *. Using UTF-8 as the codepage with setlocale() is explicitly
forbidden.

Work this around by overriding the MSVCRT functions with wrapper
macros, that assume UTF-8 and use "proper" API calls like _wopen etc.
to deal with unicode filenames. All code that uses standard functions
that take or return filenames must now include osdep/io.h. stat()
can't be overridden, because MinGW-w64 itself defines "stat" as a
macro. Change code to use use mp_stat() instead.

This is not perfectly clean, but still somewhat sane, and much better
than littering the rest of the mplayer code with MinGW specific hacks.
It's also a bit fragile, but that's actually little different from the
previous situation. Also, MinGW is unlikely to ever include a nice way
of dealing with this.
2012-03-09 20:48:54 +02:00

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/*
* 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 <assert.h>
#include <dirent.h>
#include <libavutil/common.h>
#include "osdep/io.h"
#include "talloc.h"
#include "mp_core.h"
#include "mp_msg.h"
#include "libmpdemux/demuxer.h"
#include "path.h"
#include "bstr.h"
#include "mpcommon.h"
#include "stream/stream.h"
static char **find_files(const char *original_file, const char *suffix)
{
void *tmpmem = talloc_new(NULL);
char *basename = mp_basename(original_file);
struct bstr directory = mp_dirname(original_file);
char **results = talloc_size(NULL, 0);
char *dir_zero = bstrdup0(tmpmem, directory);
DIR *dp = opendir(dir_zero);
if (!dp) {
talloc_free(tmpmem);
return results;
}
struct dirent *ep;
char ***names_by_matchlen = talloc_zero_array(tmpmem, char **,
strlen(basename) + 1);
int num_results = 0;
while ((ep = readdir(dp))) {
int suffix_offset = strlen(ep->d_name) - strlen(suffix);
// name must end with suffix
if (suffix_offset < 0 || strcmp(ep->d_name + suffix_offset, suffix))
continue;
// don't list the original name
if (!strcmp(ep->d_name, basename))
continue;
char *name = mp_path_join(results, directory, bstr(ep->d_name));
char *s1 = ep->d_name;
char *s2 = basename;
int matchlen = 0;
while (*s1 && *s1++ == *s2++)
matchlen++;
int oldcount = MP_TALLOC_ELEMS(names_by_matchlen[matchlen]);
names_by_matchlen[matchlen] = talloc_realloc(names_by_matchlen,
names_by_matchlen[matchlen],
char *, oldcount + 1);
names_by_matchlen[matchlen][oldcount] = name;
num_results++;
}
closedir(dp);
results = talloc_realloc(NULL, results, char *, num_results);
char **resptr = results;
for (int i = strlen(basename); i >= 0; i--) {
char **p = names_by_matchlen[i];
for (int j = 0; j < talloc_get_size(p) / sizeof(char *); j++)
*resptr++ = p[j];
}
assert(resptr == results + num_results);
talloc_free(tmpmem);
return results;
}
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 = MP_TALLOC_ELEMS(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_withparams(&mpctx->opts, s,
DEMUXER_TYPE_MATROSKA, mpctx->opts.audio_id,
mpctx->opts.video_id, mpctx->opts.sub_id, filenames[i],
&(struct demuxer_params){.matroska_wanted_uids = uid_map});
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)[16] = talloc_array_ptrtype(NULL, uid_map,
m->num_ordered_chapters + 1);
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 %g ms.\n", i, join_diff / 1e6);
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;
talloc_free(uid_map);
if (!part_count) {
// None of the parts come from the file itself???
talloc_free(sources);
talloc_free(timeline);
talloc_free(chapters);
return;
}
if (missing_time)
mp_msg(MSGT_CPLAYER, MSGL_ERR, "There are %.3f seconds missing "
"from the timeline!\n", missing_time / 1e9);
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;
}
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