From 51de1d8436100f725f3576aefa24a2bd2057bc28 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 22:36:56 +0200 Subject: Adding upstream version 0.37.0. Signed-off-by: Daniel Baumann --- demux/ebml.h | 93 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 demux/ebml.h (limited to 'demux/ebml.h') diff --git a/demux/ebml.h b/demux/ebml.h new file mode 100644 index 0000000..86a4009 --- /dev/null +++ b/demux/ebml.h @@ -0,0 +1,93 @@ +/* + * This file is part of mpv. + * + * mpv is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * mpv 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with mpv. If not, see . + */ + +#ifndef MPLAYER_EBML_H +#define MPLAYER_EBML_H + +#include +#include +#include + +#include "stream/stream.h" +#include "misc/bstr.h" + +struct mp_log; + +/* EBML version supported */ +#define EBML_VERSION 1 + +enum ebml_elemtype { + EBML_TYPE_SUBELEMENTS, + EBML_TYPE_UINT, + EBML_TYPE_SINT, + EBML_TYPE_FLOAT, + EBML_TYPE_STR, + EBML_TYPE_BINARY, + EBML_TYPE_EBML_ID, +}; + +struct ebml_field_desc { + uint32_t id; + bool multiple; + int offset; + int count_offset; + const struct ebml_elem_desc *desc; +}; + +struct ebml_elem_desc { + char *name; + enum ebml_elemtype type; + int size; + int field_count; + const struct ebml_field_desc *fields; +}; + +struct ebml_parse_ctx { + struct mp_log *log; + void *talloc_ctx; + bool has_errors; + bool no_error_messages; +}; + +#include "ebml_types.h" + +#define EBML_ID_INVALID 0xffffffff + +/* matroska track types */ +#define MATROSKA_TRACK_VIDEO 0x01 /* rectangle-shaped pictures aka video */ +#define MATROSKA_TRACK_AUDIO 0x02 /* anything you can hear */ +#define MATROSKA_TRACK_COMPLEX 0x03 /* audio+video in same track used by DV */ +#define MATROSKA_TRACK_LOGO 0x10 /* overlay-pictures displayed over video*/ +#define MATROSKA_TRACK_SUBTITLE 0x11 /* text-subtitles */ +#define MATROSKA_TRACK_CONTROL 0x20 /* control-codes for menu or other stuff*/ + +#define EBML_UINT_INVALID UINT64_MAX +#define EBML_INT_INVALID INT64_MAX + +bool ebml_is_mkv_level1_id(uint32_t id); +uint32_t ebml_read_id (stream_t *s); +uint64_t ebml_read_length (stream_t *s); +int64_t ebml_read_signed_length(stream_t *s); +uint64_t ebml_read_uint (stream_t *s); +int64_t ebml_read_int (stream_t *s); +int ebml_read_skip(struct mp_log *log, int64_t end, stream_t *s); +int ebml_resync_cluster(struct mp_log *log, stream_t *s); + +int ebml_read_element(struct stream *s, struct ebml_parse_ctx *ctx, + void *target, const struct ebml_elem_desc *desc); + +#endif /* MPLAYER_EBML_H */ -- cgit v1.2.3