mirror of
https://github.com/mpv-player/mpv
synced 2024-12-27 17:42:17 +00:00
5114c69c7f
Subtitles (and a few other file types, like playlists) are not streamed, but fully read on opening. This means keeping the file handle or network socket open is a waste of resources and could cause other weird behavior. This is why there's a hack to close them after opening. Change this hack to make the demuxer itself do this, which is less weird. (Until recently, demuxer->stream ownership was more complex, which is why it was done this way.) There is some evil shit due to a huge ownership/lifetime mess of various objects. Especially EDL (the currently only nested demuxer case) requires being careful about mp_cancel and passing down stream pointers. As one defensive programming measure, stop accessing the "stream" variable in open_given_type(), even where it would still work. This includes removing a redundant line of code, and removing the peak call, which should not be needed anymore, as the remaining demuxers do this mostly correctly.
98 lines
2.7 KiB
C
98 lines
2.7 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv 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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* mpv 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
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* GNU 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 mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <archive.h>
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#include <archive_entry.h>
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#include "common/common.h"
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#include "common/playlist.h"
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#include "stream/stream.h"
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#include "demux.h"
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#include "stream/stream_libarchive.h"
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static int cmp_filename(const void *a, const void *b)
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{
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return strcmp(*(char **)a, *(char **)b);
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}
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static int open_file(struct demuxer *demuxer, enum demux_check check)
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{
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if (!demuxer->access_references)
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return -1;
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int flags = 0;
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int probe_size = STREAM_BUFFER_SIZE;
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if (check <= DEMUX_CHECK_REQUEST) {
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flags |= MP_ARCHIVE_FLAG_UNSAFE;
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probe_size *= 100;
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}
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bstr probe = stream_peek(demuxer->stream, probe_size);
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if (probe.len == 0)
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return -1;
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struct stream *probe_stream = open_memory_stream(probe.start, probe.len);
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struct mp_archive *mpa = mp_archive_new(mp_null_log, probe_stream, flags);
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bool ok = !!mpa;
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free_stream(probe_stream);
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mp_archive_free(mpa);
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if (!ok)
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return -1;
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mpa = mp_archive_new(demuxer->log, demuxer->stream, flags);
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if (!mpa)
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return -1;
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struct playlist *pl = talloc_zero(demuxer, struct playlist);
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demuxer->playlist = pl;
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// make it load archive://
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pl->disable_safety = true;
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char *prefix = mp_url_escape(mpa, demuxer->stream->url, "~|");
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char **files = NULL;
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int num_files = 0;
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while (mp_archive_next_entry(mpa)) {
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// stream_libarchive.c does the real work
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char *f = talloc_asprintf(mpa, "archive://%s|%s", prefix,
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mpa->entry_filename);
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MP_TARRAY_APPEND(mpa, files, num_files, f);
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}
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if (files)
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qsort(files, num_files, sizeof(files[0]), cmp_filename);
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for (int n = 0; n < num_files; n++)
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playlist_add_file(pl, files[n]);
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demuxer->filetype = "archive";
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demuxer->fully_read = true;
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mp_archive_free(mpa);
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demux_close_stream(demuxer);
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return 0;
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}
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const struct demuxer_desc demuxer_desc_libarchive = {
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.name = "libarchive",
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.desc = "libarchive wrapper",
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.open = open_file,
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};
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