mirror of
https://github.com/mpv-player/mpv
synced 2024-12-28 01:52:19 +00:00
demux_mkv: use new EBML parser for chapter parsing
This commit is contained in:
Uoti Urpala
parent
8c0e224097
commit
6e7531c4be
@ -999,220 +999,123 @@ static int demux_mkv_read_cues(demuxer_t *demuxer)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static uint64_t read_one_chapter(struct demuxer *demuxer, stream_t *s,
|
||||
struct matroska_chapter *chapters,
|
||||
int chapter_num)
|
||||
{
|
||||
uint64_t len, l;
|
||||
uint64_t start = 0, end = 0;
|
||||
struct matroska_chapter chapter = { };
|
||||
char *name = 0;
|
||||
int i;
|
||||
uint32_t id;
|
||||
bool badchapter = false;
|
||||
|
||||
len = ebml_read_length(s, &i);
|
||||
uint64_t bytes_read = len + i;
|
||||
|
||||
while (len > 0) {
|
||||
id = ebml_read_id(s, &i);
|
||||
len -= i;
|
||||
switch (id) {
|
||||
case MATROSKA_ID_CHAPTERTIMESTART:
|
||||
start = ebml_read_uint(s, &l) / 1000000;
|
||||
len -= l;
|
||||
break;
|
||||
|
||||
case MATROSKA_ID_CHAPTERTIMEEND:
|
||||
end = ebml_read_uint(s, &l) / 1000000;
|
||||
len -= l;
|
||||
break;
|
||||
|
||||
case MATROSKA_ID_CHAPTERDISPLAY:;
|
||||
uint64_t displaylen = ebml_read_length(s, &i);
|
||||
len -= displaylen + i;
|
||||
while (displaylen > 0) {
|
||||
id = ebml_read_id(s, &i);
|
||||
displaylen -= i;
|
||||
switch (id) {
|
||||
case MATROSKA_ID_CHAPSTRING:
|
||||
name = ebml_read_utf8(s, &l);
|
||||
break;
|
||||
default:
|
||||
ebml_read_skip(s, &l);
|
||||
break;
|
||||
}
|
||||
displaylen -= l;
|
||||
}
|
||||
break;
|
||||
|
||||
case MATROSKA_ID_CHAPTERSEGMENTUID:
|
||||
l = ebml_read_length(s, &i);
|
||||
len -= l + i;
|
||||
if (l != sizeof(chapter.segment_uid)) {
|
||||
mp_msg(MSGT_DEMUX, MSGL_INFO,
|
||||
"[mkv] chapter segment uid invalid length %" PRIu64
|
||||
"\n", l);
|
||||
stream_skip(s, l);
|
||||
} else {
|
||||
stream_read(s, chapter.segment_uid, l);
|
||||
chapter.has_segment_uid = true;
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Chapter segment uid ");
|
||||
for (int i = 0; i < l; i++)
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "%02x ",
|
||||
chapter.segment_uid[i]);
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "\n");
|
||||
}
|
||||
break;
|
||||
|
||||
case MATROSKA_ID_CHAPTERSEGMENTEDITIONUID:
|
||||
mp_tmsg(MSGT_DEMUX, MSGL_WARN,
|
||||
"[mkv] Warning: unsupported edition recursion in chapter; "
|
||||
"will skip on playback!\n");
|
||||
ebml_read_skip(s, &l);
|
||||
len -= l;
|
||||
badchapter = true;
|
||||
break;
|
||||
|
||||
default:
|
||||
ebml_read_skip(s, &l);
|
||||
len -= l;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!name)
|
||||
name = strdup("(unnamed)");
|
||||
|
||||
chapter.start = start;
|
||||
chapter.end = end;
|
||||
chapter.name = talloc_strdup(chapters, name);
|
||||
chapters[chapter_num] = chapter;
|
||||
|
||||
if (badchapter) {
|
||||
memset(&chapter.segment_uid, 0, sizeof(chapter.segment_uid));
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
mp_msg(MSGT_DEMUX, MSGL_V,
|
||||
"[mkv] Chapter %u from %02d:%02d:%02d."
|
||||
"%03d to %02d:%02d:%02d.%03d, %s\n", chapter_num,
|
||||
(int) (start / 60 / 60 / 1000), (int) ((start / 60 / 1000) % 60),
|
||||
(int) ((start / 1000) % 60), (int) (start % 1000),
|
||||
(int) (end / 60 / 60 / 1000), (int) ((end / 60 / 1000) % 60),
|
||||
(int) ((end / 1000) % 60), (int) (end % 1000), name);
|
||||
|
||||
cleanup:
|
||||
free(name);
|
||||
return bytes_read;
|
||||
}
|
||||
|
||||
static int demux_mkv_read_chapters(struct demuxer *demuxer)
|
||||
{
|
||||
struct MPOpts *opts = demuxer->opts;
|
||||
stream_t *s = demuxer->stream;
|
||||
uint64_t length, l;
|
||||
int i;
|
||||
uint32_t id;
|
||||
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] /---- [ parsing chapters ] ---------\n");
|
||||
length = ebml_read_length(s, NULL);
|
||||
struct ebml_chapters file_chapters = {};
|
||||
struct ebml_parse_ctx parse_ctx = {};
|
||||
if (ebml_read_element(s, &parse_ctx, &file_chapters,
|
||||
&ebml_chapters_desc) < 0)
|
||||
goto out;
|
||||
|
||||
struct matroska_chapter *selected_chapters = NULL;
|
||||
int num_selected_chapters = 0;
|
||||
bool have_default = false;
|
||||
bool have_user_specified = false;
|
||||
int selected_edition = -1;
|
||||
bool se_is_ordered = false;
|
||||
int cur_idx = -1;
|
||||
while (length > 0) {
|
||||
id = ebml_read_id(s, &i);
|
||||
length -= i;
|
||||
switch (id) {
|
||||
case MATROSKA_ID_EDITIONENTRY:
|
||||
cur_idx++;
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] New edition %d\n", cur_idx);
|
||||
uint64_t editionlen = ebml_read_length(s, &i);
|
||||
length -= editionlen + i;
|
||||
bool defaultflag = false;
|
||||
bool ordered = false;
|
||||
struct matroska_chapter *chapters = NULL;
|
||||
int num_chapters = 0;
|
||||
while (editionlen > 0) {
|
||||
id = ebml_read_id(s, &i);
|
||||
editionlen -= i;
|
||||
switch (id) {
|
||||
case MATROSKA_ID_CHAPTERATOM:
|
||||
chapters =
|
||||
talloc_realloc(demuxer, chapters,
|
||||
struct matroska_chapter,
|
||||
num_chapters + 1);
|
||||
l = read_one_chapter(demuxer, s, chapters, num_chapters++);
|
||||
break;
|
||||
case MATROSKA_ID_EDITIONFLAGDEFAULT:
|
||||
defaultflag = ebml_read_uint(s, &l);
|
||||
mp_msg(MSGT_DEMUX, MSGL_V,
|
||||
"[mkv] Default edition flag: %d\n", defaultflag);
|
||||
break;
|
||||
case MATROSKA_ID_EDITIONFLAGORDERED:
|
||||
ordered = ebml_read_uint(s, &l);
|
||||
mp_msg(MSGT_DEMUX, MSGL_V,
|
||||
"[mkv] Ordered chapter flag: %d\n", ordered);
|
||||
break;
|
||||
|
||||
default:
|
||||
ebml_read_skip(s, &l);
|
||||
int selected_edition = 0;
|
||||
int num_editions = file_chapters.n_edition_entry;
|
||||
struct ebml_edition_entry *editions = file_chapters.edition_entry;
|
||||
if (opts->edition_id >= 0 && opts->edition_id < num_editions) {
|
||||
selected_edition = opts->edition_id;
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] User-specified edition: %d\n",
|
||||
selected_edition);
|
||||
} else
|
||||
for (int i = 0; i < num_editions; i++)
|
||||
if (editions[i].edition_flag_default) {
|
||||
selected_edition = i;
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Default edition: %d\n", i);
|
||||
break;
|
||||
}
|
||||
editionlen -= l;
|
||||
struct matroska_chapter *m_chapters = NULL;
|
||||
if (editions[selected_edition].edition_flag_ordered) {
|
||||
int count = editions[selected_edition].n_chapter_atom;
|
||||
m_chapters = talloc_array_ptrtype(demuxer, m_chapters, count);
|
||||
demuxer->matroska_data.ordered_chapters = m_chapters;
|
||||
demuxer->matroska_data.num_ordered_chapters = count;
|
||||
}
|
||||
if (cur_idx == opts->edition_id) {
|
||||
have_user_specified = true;
|
||||
mp_msg(MSGT_DEMUX, MSGL_V,
|
||||
"[mkv] Found user-selected edition\n");
|
||||
} else if (!have_user_specified && !have_default && defaultflag) {
|
||||
have_default = true;
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Default edition: %d\n",
|
||||
cur_idx);
|
||||
} else if (selected_edition < 0) {
|
||||
;
|
||||
|
||||
for (int idx = 0; idx < num_editions; idx++) {
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] New edition %d\n", idx);
|
||||
int warn_level = idx == selected_edition ? MSGL_WARN : MSGL_V;
|
||||
if (editions[idx].n_edition_flag_default)
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Default edition flag: %"PRIu64
|
||||
"\n", editions[idx].edition_flag_default);
|
||||
if (editions[idx].n_edition_flag_ordered)
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Ordered chapter flag: %"PRIu64
|
||||
"\n", editions[idx].edition_flag_ordered);
|
||||
for (int i = 0; i < editions[idx].n_chapter_atom; i++) {
|
||||
struct ebml_chapter_atom *ca = editions[idx].chapter_atom + i;
|
||||
struct matroska_chapter chapter = { };
|
||||
struct bstr name = { "(unnamed)", 9 };
|
||||
|
||||
if (!ca->n_chapter_time_start)
|
||||
mp_msg(MSGT_DEMUX, warn_level,
|
||||
"[mkv] Chapter lacks start time\n");
|
||||
chapter.start = ca->chapter_time_start / 1000000;
|
||||
chapter.end = ca->chapter_time_end / 1000000;
|
||||
|
||||
if (ca->n_chapter_display) {
|
||||
if (ca->n_chapter_display > 1)
|
||||
mp_msg(MSGT_DEMUX, warn_level, "[mkv] Multiple chapter "
|
||||
"names not supported, picking first\n");
|
||||
if (!ca->chapter_display[0].n_chap_string)
|
||||
mp_msg(MSGT_DEMUX, warn_level, "[mkv] Malformed chapter "
|
||||
"name entry\n");
|
||||
else
|
||||
name = ca->chapter_display[0].chap_string;
|
||||
}
|
||||
|
||||
if (ca->n_chapter_segment_uid) {
|
||||
chapter.has_segment_uid = true;
|
||||
int len = ca->chapter_segment_uid.len;
|
||||
if (len != sizeof(chapter.segment_uid))
|
||||
mp_msg(MSGT_DEMUX, warn_level,
|
||||
"[mkv] Chapter segment uid bad length %d\n", len);
|
||||
else if (ca->n_chapter_segment_edition_uid) {
|
||||
mp_tmsg(MSGT_DEMUX, warn_level, "[mkv] Warning: "
|
||||
"unsupported edition recursion in chapter; "
|
||||
"will skip on playback!\n");
|
||||
} else {
|
||||
talloc_free(chapters);
|
||||
break;
|
||||
memcpy(chapter.segment_uid, ca->chapter_segment_uid.start,
|
||||
len);
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Chapter segment uid ");
|
||||
for (int i = 0; i < len; i++)
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "%02x ",
|
||||
chapter.segment_uid[i]);
|
||||
mp_msg(MSGT_DEMUX, MSGL_V, "\n");
|
||||
}
|
||||
}
|
||||
selected_edition = cur_idx;
|
||||
talloc_free(selected_chapters);
|
||||
selected_chapters = chapters;
|
||||
num_selected_chapters = num_chapters;
|
||||
se_is_ordered = ordered;
|
||||
break;
|
||||
|
||||
default:
|
||||
ebml_read_skip(s, &l);
|
||||
length -= l;
|
||||
break;
|
||||
mp_msg(MSGT_DEMUX, MSGL_V,
|
||||
"[mkv] Chapter %u from %02d:%02d:%02d.%03d "
|
||||
"to %02d:%02d:%02d.%03d, %.*s\n", idx,
|
||||
(int) (chapter.start / 60 / 60 / 1000),
|
||||
(int) ((chapter.start / 60 / 1000) % 60),
|
||||
(int) ((chapter.start / 1000) % 60),
|
||||
(int) (chapter.start % 1000),
|
||||
(int) (chapter.end / 60 / 60 / 1000),
|
||||
(int) ((chapter.end / 60 / 1000) % 60),
|
||||
(int) ((chapter.end / 1000) % 60),
|
||||
(int) (chapter.end % 1000),
|
||||
name.len, name.start);
|
||||
|
||||
if (idx == selected_edition){
|
||||
demuxer_add_chapter(demuxer, name.start, name.len,
|
||||
chapter.start, chapter.end);
|
||||
if (editions[idx].edition_flag_ordered) {
|
||||
chapter.name = talloc_strndup(m_chapters, name.start,
|
||||
name.len);
|
||||
m_chapters[i] = chapter;
|
||||
}
|
||||
}
|
||||
if (cur_idx > 0)
|
||||
}
|
||||
}
|
||||
if (num_editions > 1)
|
||||
mp_msg(MSGT_DEMUX, MSGL_INFO,
|
||||
"[mkv] Found %d editions, will play #%d (first is 0).\n",
|
||||
cur_idx + 1, selected_edition);
|
||||
|
||||
for (i = 0; i < num_selected_chapters; i++)
|
||||
demuxer_add_chapter(demuxer, selected_chapters[i].name, INT_MAX,
|
||||
selected_chapters[i].start,
|
||||
selected_chapters[i].end);
|
||||
struct matroska_data *m = &demuxer->matroska_data;
|
||||
talloc_free(m->ordered_chapters);
|
||||
if (se_is_ordered) {
|
||||
m->ordered_chapters = selected_chapters;
|
||||
m->num_ordered_chapters = num_selected_chapters;
|
||||
} else {
|
||||
m->ordered_chapters = NULL;
|
||||
m->num_ordered_chapters = 0;
|
||||
talloc_free(selected_chapters);
|
||||
}
|
||||
num_editions, selected_edition);
|
||||
|
||||
out:
|
||||
talloc_free(parse_ctx.talloc_ctx);
|
||||
mp_msg(MSGT_DEMUX, MSGL_V,
|
||||
"[mkv] \\---- [ parsing chapters ] ---------\n");
|
||||
return 0;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user