mirror of
https://github.com/mpv-player/mpv
synced 2024-12-30 11:02:10 +00:00
9f72a9753e
Having the DTS directly can be useful for restoring PTS values. The avi file format doesn't actually store PTS values, just DTS. An older hack explicitly exported the DTS as PTS (ignoring the [I assume] genpts generated non-sense PTS), which is not necessary anymore due to this change.
302 lines
10 KiB
C
302 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 "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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// 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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enum demux_ctrl {
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DEMUXER_CTRL_UPDATE_INFO = 1,
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DEMUXER_CTRL_SWITCHED_TRACKS,
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DEMUXER_CTRL_GET_TIME_LENGTH,
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DEMUXER_CTRL_GET_START_TIME,
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DEMUXER_CTRL_RESYNC,
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DEMUXER_CTRL_IDENTIFY_PROGRAM,
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};
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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_segment_uid {
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unsigned char segment[16];
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uint64_t edition;
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};
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struct matroska_data {
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struct matroska_segment_uid uid;
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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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struct matroska_segment_uid uid;
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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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struct matroska_segment_uid *matroska_wanted_uids;
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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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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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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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bool demux_matroska_uid_cmp(struct matroska_segment_uid *a,
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struct matroska_segment_uid *b);
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#endif /* MPLAYER_DEMUXER_H */
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