summaryrefslogtreecommitdiffstats
path: root/demux/demux.h
blob: 85ee738137193681d984253d5f243a29599242f7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
/*
 * This file is part of MPlayer.
 *
 * MPlayer is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * MPlayer 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef MPLAYER_DEMUXER_H
#define MPLAYER_DEMUXER_H

#include <sys/types.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>

#include "core/bstr.h"
#include "core/mp_common.h"
#include "demux_packet.h"
#include "stheader.h"

struct MPOpts;

#define MAX_PACKS 4096
#define MAX_PACK_BYTES 0x8000000  // 128 MiB

enum demuxer_type {
    DEMUXER_TYPE_GENERIC = 0,
    DEMUXER_TYPE_TV,
    DEMUXER_TYPE_MATROSKA,
    DEMUXER_TYPE_EDL,
    DEMUXER_TYPE_CUE,
};

enum timestamp_type {
    TIMESTAMP_TYPE_PTS,
    TIMESTAMP_TYPE_SORT,
};


// DEMUXER control commands/answers
#define DEMUXER_CTRL_NOTIMPL -1
#define DEMUXER_CTRL_DONTKNOW 0
#define DEMUXER_CTRL_OK 1
#define DEMUXER_CTRL_GUESS 2

#define DEMUXER_CTRL_UPDATE_INFO 8
#define DEMUXER_CTRL_SWITCHED_TRACKS 9
#define DEMUXER_CTRL_GET_TIME_LENGTH 10
#define DEMUXER_CTRL_GET_START_TIME 11
#define DEMUXER_CTRL_SWITCH_AUDIO 12
#define DEMUXER_CTRL_RESYNC 13
#define DEMUXER_CTRL_SWITCH_VIDEO 14
#define DEMUXER_CTRL_IDENTIFY_PROGRAM 15
#define DEMUXER_CTRL_CORRECT_PTS 16 // int* (write 1 for ok, 0 for no)

#define SEEK_ABSOLUTE (1 << 0)
#define SEEK_FACTOR   (1 << 1)
#define SEEK_FORWARD  (1 << 2)
#define SEEK_BACKWARD (1 << 3)
#define SEEK_SUBPREROLL (1 << 4)

// Strictness of the demuxer open format check.
// demux.c will try by default: NORMAL, UNSAFE (in this order)
// Using "-demuxer format" will try REQUEST
// Using "-demuxer +format" will try FORCE
// REQUEST can be used as special value for raw demuxers which have no file
// header check; then they should fail if check!=FORCE && check!=REQUEST.
//
// In general, the list is sorted from weakest check to normal check.
// You can use relation operators to compare the check level.
enum demux_check {
    DEMUX_CHECK_FORCE,  // force format if possible
    DEMUX_CHECK_UNSAFE, // risky/fuzzy detection
    DEMUX_CHECK_REQUEST,// requested by user or stream implementation
    DEMUX_CHECK_NORMAL, // normal, safe detection
};

// demux_lavf can pass lavf buffers using FF_INPUT_BUFFER_PADDING_SIZE instead
#define MP_INPUT_BUFFER_PADDING_SIZE 16

#define MAX_SH_STREAMS 256

struct demuxer;

/**
 * Demuxer description structure
 */
typedef struct demuxer_desc {
    const char *name;      // Demuxer name, used with -demuxer switch
    const char *desc;      // Displayed to user

    enum demuxer_type type; // optional

    // Return 0 on success, otherwise -1
    int (*open)(struct demuxer *demuxer, enum demux_check check);
    // The following functions are all optional
    int (*fill_buffer)(struct demuxer *demuxer); // 0 on EOF, otherwise 1
    void (*close)(struct demuxer *demuxer);
    void (*seek)(struct demuxer *demuxer, float rel_seek_secs,
                 float audio_delay, int flags);
    int (*control)(struct demuxer *demuxer, int cmd, void *arg);
} demuxer_desc_t;

typedef struct demux_chapter
{
    int original_index;
    uint64_t start, end;
    char *name;
} demux_chapter_t;

struct matroska_data {
    unsigned char segment_uid[16];
    // Ordered chapter information if any
    struct matroska_chapter {
        uint64_t start;
        uint64_t end;
        bool has_segment_uid;
        unsigned char segment_uid[16];
        char *name;
    } *ordered_chapters;
    int num_ordered_chapters;
};

typedef struct demux_attachment
{
    char *name;
    char *type;
    void *data;
    unsigned int data_size;
} demux_attachment_t;

struct demuxer_params {
    unsigned char (*matroska_wanted_uids)[16];
    int matroska_wanted_segment;
    bool *matroska_was_valid;
    struct ass_library *ass_library;
};

typedef struct demuxer {
    const demuxer_desc_t *desc; ///< Demuxer description structure
    const char *filetype; // format name when not identified by demuxer (libavformat)
    int64_t filepos;  // input stream current pos.
    int64_t movi_start;
    int64_t movi_end;
    struct stream *stream;
    double stream_pts;     // current stream pts, if applicable (e.g. dvd)
    char *filename;  // same as stream->url
    enum demuxer_type type;
    int seekable; // flag
    /* Set if using absolute seeks for small movements is OK (no pts resets
     * that would make pts ambigious, preferably supports back/forward flags */
    bool accurate_seek;
    // File format allows PTS resets (even if the current file is without)
    bool ts_resets_possible;
    enum timestamp_type timestamp_type;
    bool warned_queue_overflow;

    struct sh_stream **streams;
    int num_streams;
    bool stream_autoselect;

    int num_editions;
    int edition;

    struct demux_chapter *chapters;
    int num_chapters;

    struct demux_attachment *attachments;
    int num_attachments;

    struct matroska_data matroska_data;
    // for trivial demuxers which just read the whole file for codec to use
    struct bstr file_contents;

    void *priv;   // demuxer-specific internal data
    char **info;  // metadata
    struct MPOpts *opts;
    struct demuxer_params *params;
} demuxer_t;

typedef struct {
    int progid;      //program id
    int aid, vid, sid; //audio, video and subtitle id
} demux_program_t;

struct demux_packet *new_demux_packet(size_t len);
// data must already have suitable padding
struct demux_packet *new_demux_packet_fromdata(void *data, size_t len);
struct demux_packet *new_demux_packet_from(void *data, size_t len);
void resize_demux_packet(struct demux_packet *dp, size_t len);
void free_demux_packet(struct demux_packet *dp);
struct demux_packet *demux_copy_packet(struct demux_packet *dp);

#ifndef SIZE_MAX
#define SIZE_MAX ((size_t)-1)
#endif

void free_demuxer(struct demuxer *demuxer);

int demuxer_add_packet(demuxer_t *demuxer, struct sh_stream *stream,
                       demux_packet_t *dp);

struct demux_packet *demux_read_packet(struct sh_stream *sh);
double demux_get_next_pts(struct sh_stream *sh);
bool demux_has_packet(struct sh_stream *sh);
bool demux_stream_eof(struct sh_stream *sh);

struct sh_stream *new_sh_stream(struct demuxer *demuxer, enum stream_type type);

struct demuxer *demux_open(struct stream *stream, char *force_format,
                           struct demuxer_params *params, struct MPOpts *opts);

void demux_flush(struct demuxer *demuxer);
int demux_seek(struct demuxer *demuxer, float rel_seek_secs, float audio_delay,
               int flags);

int demux_info_add(struct demuxer *demuxer, const char *opt, const char *param);
int demux_info_add_bstr(struct demuxer *demuxer, struct bstr opt,
                        struct bstr param);
char *demux_info_get(struct demuxer *demuxer, const char *opt);
int demux_info_print(struct demuxer *demuxer);
void demux_info_update(struct demuxer *demuxer);

int demux_control(struct demuxer *demuxer, int cmd, void *arg);

void demuxer_switch_track(struct demuxer *demuxer, enum stream_type type,
                          struct sh_stream *stream);
void demuxer_select_track(struct demuxer *demuxer, struct sh_stream *stream,
                          bool selected);
void demuxer_enable_autoselect(struct demuxer *demuxer);

void demuxer_help(void);

int demuxer_add_attachment(struct demuxer *demuxer, struct bstr name,
                           struct bstr type, struct bstr data);
int demuxer_add_chapter(struct demuxer *demuxer, struct bstr name,
                        uint64_t start, uint64_t end);
int demuxer_seek_chapter(struct demuxer *demuxer, int chapter,
                         double *seek_pts);
void demuxer_sort_chapters(demuxer_t *demuxer);

double demuxer_get_time_length(struct demuxer *demuxer);
double demuxer_get_start_time(struct demuxer *demuxer);

/// Get current chapter index if available.
int demuxer_get_current_chapter(struct demuxer *demuxer, double time_now);
/// Get chapter name by index if available.
char *demuxer_chapter_name(struct demuxer *demuxer, int chapter);
/// Get chapter start time by index if available.
double demuxer_chapter_time(struct demuxer *demuxer, int chapter);
/// Get total chapter number.
int demuxer_chapter_count(struct demuxer *demuxer);
/// Get current angle index.
int demuxer_get_current_angle(struct demuxer *demuxer);
/// Set angle.
int demuxer_set_angle(struct demuxer *demuxer, int angle);
/// Get number of angles.
int demuxer_angles_count(struct demuxer *demuxer);

struct sh_stream *demuxer_stream_by_demuxer_id(struct demuxer *d,
                                               enum stream_type t, int id);

bool demuxer_stream_is_selected(struct demuxer *d, struct sh_stream *stream);
bool demuxer_stream_has_packets_queued(struct demuxer *d, struct sh_stream *stream);

void demux_packet_list_sort(struct demux_packet **pkts, int num_pkts);
void demux_packet_list_seek(struct demux_packet **pkts, int num_pkts,
                            int *current, float rel_seek_secs, int flags);
double demux_packet_list_duration(struct demux_packet **pkts, int num_pkts);
struct demux_packet *demux_packet_list_fill(struct demux_packet **pkts,
                                            int num_pkts, int *current);

#endif /* MPLAYER_DEMUXER_H */