mirror of
https://github.com/mpv-player/mpv
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828a952c9a
There is uninitialized memory access if the actual size isn't passed along. In the worst case, this can cause a source to be loaded against the uninitialized memory, causing a false count of found versus required sources, preventing the "Failed to find ordered chapter part" message.
303 lines
10 KiB
C
303 lines
10 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_DEMUXER_H
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#define MPLAYER_DEMUXER_H
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include "mpvcore/bstr.h"
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#include "mpvcore/mp_common.h"
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#include "demux_packet.h"
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#include "stheader.h"
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struct MPOpts;
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#define MAX_PACKS 4096
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#define MAX_PACK_BYTES 0x8000000 // 128 MiB
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enum demuxer_type {
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DEMUXER_TYPE_GENERIC = 0,
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DEMUXER_TYPE_TV,
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DEMUXER_TYPE_MATROSKA,
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DEMUXER_TYPE_EDL,
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DEMUXER_TYPE_CUE,
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};
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enum timestamp_type {
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TIMESTAMP_TYPE_PTS,
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TIMESTAMP_TYPE_SORT,
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};
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// DEMUXER control commands/answers
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#define DEMUXER_CTRL_NOTIMPL -1
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#define DEMUXER_CTRL_DONTKNOW 0
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#define DEMUXER_CTRL_OK 1
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#define DEMUXER_CTRL_GUESS 2
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#define DEMUXER_CTRL_UPDATE_INFO 8
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#define DEMUXER_CTRL_SWITCHED_TRACKS 9
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#define DEMUXER_CTRL_GET_TIME_LENGTH 10
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#define DEMUXER_CTRL_GET_START_TIME 11
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#define DEMUXER_CTRL_SWITCH_AUDIO 12
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#define DEMUXER_CTRL_RESYNC 13
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#define DEMUXER_CTRL_SWITCH_VIDEO 14
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#define DEMUXER_CTRL_IDENTIFY_PROGRAM 15
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#define SEEK_ABSOLUTE (1 << 0)
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#define SEEK_FACTOR (1 << 1)
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#define SEEK_FORWARD (1 << 2)
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#define SEEK_BACKWARD (1 << 3)
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#define SEEK_SUBPREROLL (1 << 4)
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// Strictness of the demuxer open format check.
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// demux.c will try by default: NORMAL, UNSAFE (in this order)
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// Using "-demuxer format" will try REQUEST
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// Using "-demuxer +format" will try FORCE
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// REQUEST can be used as special value for raw demuxers which have no file
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// header check; then they should fail if check!=FORCE && check!=REQUEST.
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//
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// In general, the list is sorted from weakest check to normal check.
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// You can use relation operators to compare the check level.
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enum demux_check {
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DEMUX_CHECK_FORCE, // force format if possible
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DEMUX_CHECK_UNSAFE, // risky/fuzzy detection
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DEMUX_CHECK_REQUEST,// requested by user or stream implementation
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DEMUX_CHECK_NORMAL, // normal, safe detection
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};
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// demux_lavf can pass lavf buffers using FF_INPUT_BUFFER_PADDING_SIZE instead
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#define MP_INPUT_BUFFER_PADDING_SIZE 16
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#define MAX_SH_STREAMS 256
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struct demuxer;
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/**
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* Demuxer description structure
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*/
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typedef struct demuxer_desc {
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const char *name; // Demuxer name, used with -demuxer switch
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const char *desc; // Displayed to user
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enum demuxer_type type; // optional
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// Return 0 on success, otherwise -1
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int (*open)(struct demuxer *demuxer, enum demux_check check);
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// The following functions are all optional
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int (*fill_buffer)(struct demuxer *demuxer); // 0 on EOF, otherwise 1
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void (*close)(struct demuxer *demuxer);
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void (*seek)(struct demuxer *demuxer, float rel_seek_secs, int flags);
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int (*control)(struct demuxer *demuxer, int cmd, void *arg);
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} demuxer_desc_t;
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struct mp_tags {
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char **keys;
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char **values;
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int num_keys;
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};
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typedef struct demux_chapter
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{
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int original_index;
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uint64_t start, end;
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char *name;
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struct mp_tags *metadata;
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uint64_t demuxer_id; // for mapping to internal demuxer data structures
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} demux_chapter_t;
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struct matroska_data {
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unsigned char segment_uid[16];
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// Ordered chapter information if any
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struct matroska_chapter {
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uint64_t start;
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uint64_t end;
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bool has_segment_uid;
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unsigned char segment_uid[16];
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char *name;
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} *ordered_chapters;
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int num_ordered_chapters;
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};
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typedef struct demux_attachment
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{
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char *name;
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char *type;
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void *data;
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unsigned int data_size;
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} demux_attachment_t;
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struct demuxer_params {
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int matroska_num_wanted_uids;
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unsigned char (*matroska_wanted_uids)[16];
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int matroska_wanted_segment;
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bool *matroska_was_valid;
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struct ass_library *ass_library;
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};
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typedef struct demuxer {
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const demuxer_desc_t *desc; ///< Demuxer description structure
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const char *filetype; // format name when not identified by demuxer (libavformat)
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int64_t filepos; // input stream current pos.
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int64_t movi_start;
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int64_t movi_end;
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struct stream *stream;
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double stream_pts; // current stream pts, if applicable (e.g. dvd)
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char *filename; // same as stream->url
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enum demuxer_type type;
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int seekable; // flag
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/* Set if using absolute seeks for small movements is OK (no pts resets
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* that would make pts ambigious, preferably supports back/forward flags */
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bool accurate_seek;
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// File format allows PTS resets (even if the current file is without)
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bool ts_resets_possible;
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enum timestamp_type timestamp_type;
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bool warned_queue_overflow;
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struct sh_stream **streams;
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int num_streams;
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bool stream_autoselect;
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int num_editions;
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int edition;
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struct demux_chapter *chapters;
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int num_chapters;
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struct demux_attachment *attachments;
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int num_attachments;
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struct matroska_data matroska_data;
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// for trivial demuxers which just read the whole file for codec to use
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struct bstr file_contents;
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// If the file is a playlist file
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struct playlist *playlist;
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struct mp_tags *metadata;
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void *priv; // demuxer-specific internal data
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struct MPOpts *opts;
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struct demuxer_params *params;
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} demuxer_t;
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typedef struct {
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int progid; //program id
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int aid, vid, sid; //audio, video and subtitle id
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} demux_program_t;
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struct demux_packet *new_demux_packet(size_t len);
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// data must already have suitable padding
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struct demux_packet *new_demux_packet_fromdata(void *data, size_t len);
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struct demux_packet *new_demux_packet_from(void *data, size_t len);
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void resize_demux_packet(struct demux_packet *dp, size_t len);
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void free_demux_packet(struct demux_packet *dp);
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struct demux_packet *demux_copy_packet(struct demux_packet *dp);
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#ifndef SIZE_MAX
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#define SIZE_MAX ((size_t)-1)
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#endif
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void free_demuxer(struct demuxer *demuxer);
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int demuxer_add_packet(demuxer_t *demuxer, struct sh_stream *stream,
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demux_packet_t *dp);
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struct demux_packet *demux_read_packet(struct sh_stream *sh);
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double demux_get_next_pts(struct sh_stream *sh);
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bool demux_has_packet(struct sh_stream *sh);
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bool demux_stream_eof(struct sh_stream *sh);
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struct sh_stream *new_sh_stream(struct demuxer *demuxer, enum stream_type type);
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struct demuxer *demux_open(struct stream *stream, char *force_format,
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struct demuxer_params *params, struct MPOpts *opts);
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void demux_flush(struct demuxer *demuxer);
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int demux_seek(struct demuxer *demuxer, float rel_seek_secs, int flags);
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int demux_info_add(struct demuxer *demuxer, const char *opt, const char *param);
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int demux_info_add_bstr(struct demuxer *demuxer, struct bstr opt,
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struct bstr param);
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char *demux_info_get(struct demuxer *demuxer, const char *opt);
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int demux_info_print(struct demuxer *demuxer);
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void demux_info_update(struct demuxer *demuxer);
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int demux_control(struct demuxer *demuxer, int cmd, void *arg);
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void demuxer_switch_track(struct demuxer *demuxer, enum stream_type type,
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struct sh_stream *stream);
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void demuxer_select_track(struct demuxer *demuxer, struct sh_stream *stream,
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bool selected);
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void demuxer_enable_autoselect(struct demuxer *demuxer);
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void demuxer_help(void);
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int demuxer_add_attachment(struct demuxer *demuxer, struct bstr name,
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struct bstr type, struct bstr data);
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int demuxer_add_chapter(struct demuxer *demuxer, struct bstr name,
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uint64_t start, uint64_t end, uint64_t demuxer_id);
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void demuxer_add_chapter_info(struct demuxer *demuxer, uint64_t demuxer_id,
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bstr key, bstr value);
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int demuxer_seek_chapter(struct demuxer *demuxer, int chapter,
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double *seek_pts);
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void demuxer_sort_chapters(demuxer_t *demuxer);
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double demuxer_get_time_length(struct demuxer *demuxer);
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double demuxer_get_start_time(struct demuxer *demuxer);
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/// Get current chapter index if available.
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int demuxer_get_current_chapter(struct demuxer *demuxer, double time_now);
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/// Get chapter name by index if available.
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char *demuxer_chapter_name(struct demuxer *demuxer, int chapter);
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/// Get chapter start time by index if available.
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double demuxer_chapter_time(struct demuxer *demuxer, int chapter);
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/// Get total chapter number.
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int demuxer_chapter_count(struct demuxer *demuxer);
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/// Get current angle index.
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int demuxer_get_current_angle(struct demuxer *demuxer);
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/// Set angle.
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int demuxer_set_angle(struct demuxer *demuxer, int angle);
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/// Get number of angles.
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int demuxer_angles_count(struct demuxer *demuxer);
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struct sh_stream *demuxer_stream_by_demuxer_id(struct demuxer *d,
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enum stream_type t, int id);
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bool demuxer_stream_is_selected(struct demuxer *d, struct sh_stream *stream);
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bool demuxer_stream_has_packets_queued(struct demuxer *d, struct sh_stream *stream);
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void demux_packet_list_sort(struct demux_packet **pkts, int num_pkts);
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void demux_packet_list_seek(struct demux_packet **pkts, int num_pkts,
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int *current, float rel_seek_secs, int flags);
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double demux_packet_list_duration(struct demux_packet **pkts, int num_pkts);
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struct demux_packet *demux_packet_list_fill(struct demux_packet **pkts,
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int num_pkts, int *current);
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void mp_tags_set_str(struct mp_tags *tags, const char *key, const char *value);
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void mp_tags_set_bstr(struct mp_tags *tags, bstr key, bstr value);
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char *mp_tags_get_str(struct mp_tags *tags, const char *key);
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char *mp_tags_get_bstr(struct mp_tags *tags, bstr key);
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#endif /* MPLAYER_DEMUXER_H */
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