mirror of
https://github.com/mpv-player/mpv
synced 2024-12-30 11:02:10 +00:00
e32adef9c4
Many ebml_read_* functions have a length int pointer parameter, which returns the number of bytes skipped. Nothing actually needed this (anymore), and code using it was rather hard to understand, so get rid of them.
108 lines
2.9 KiB
C
108 lines
2.9 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_EBML_H
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#define MPLAYER_EBML_H
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#include <inttypes.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include "stream/stream.h"
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#include "bstr/bstr.h"
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struct mp_log;
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/* EBML version supported */
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#define EBML_VERSION 1
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enum ebml_elemtype {
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EBML_TYPE_SUBELEMENTS,
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EBML_TYPE_UINT,
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EBML_TYPE_SINT,
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EBML_TYPE_FLOAT,
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EBML_TYPE_STR,
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EBML_TYPE_BINARY,
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EBML_TYPE_EBML_ID,
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};
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struct ebml_field_desc {
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uint32_t id;
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bool multiple;
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int offset;
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int count_offset;
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const struct ebml_elem_desc *desc;
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};
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struct ebml_elem_desc {
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char *name;
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enum ebml_elemtype type;
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int size;
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int field_count;
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const struct ebml_field_desc *fields;
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};
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struct ebml_parse_ctx {
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struct mp_log *log;
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void *talloc_ctx;
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bool has_errors;
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bool no_error_messages;
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};
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#include "ebml_types.h"
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#define EBML_ID_INVALID 0xffffffff
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/* matroska track types */
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#define MATROSKA_TRACK_VIDEO 0x01 /* rectangle-shaped pictures aka video */
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#define MATROSKA_TRACK_AUDIO 0x02 /* anything you can hear */
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#define MATROSKA_TRACK_COMPLEX 0x03 /* audio+video in same track used by DV */
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#define MATROSKA_TRACK_LOGO 0x10 /* overlay-pictures displayed over video*/
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#define MATROSKA_TRACK_SUBTITLE 0x11 /* text-subtitles */
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#define MATROSKA_TRACK_CONTROL 0x20 /* control-codes for menu or other stuff*/
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#ifndef UINT64_MAX
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#define UINT64_MAX 18446744073709551615ULL
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#endif
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#ifndef INT64_MAX
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#define INT64_MAX 9223372036854775807LL
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#endif
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#define EBML_UINT_INVALID UINT64_MAX
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#define EBML_INT_INVALID INT64_MAX
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#define EBML_FLOAT_INVALID -1000000000.0
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bool ebml_is_mkv_level1_id(uint32_t id);
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uint32_t ebml_read_id (stream_t *s);
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uint64_t ebml_read_vlen_uint (bstr *buffer);
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int64_t ebml_read_vlen_int (bstr *buffer);
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uint64_t ebml_read_length (stream_t *s);
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uint64_t ebml_read_uint (stream_t *s);
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int64_t ebml_read_int (stream_t *s);
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int ebml_read_skip(struct mp_log *log, int64_t end, stream_t *s);
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int ebml_resync_cluster(struct mp_log *log, stream_t *s);
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int ebml_read_element(struct stream *s, struct ebml_parse_ctx *ctx,
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void *target, const struct ebml_elem_desc *desc);
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#endif /* MPLAYER_EBML_H */
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