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5 * it under the terms of the GNU General Public License as published by
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 #ifndef MPLAYER_DEMUXER_H
20 #define MPLAYER_DEMUXER_H
22 #include <sys/types.h>
30 #include "demux_packet.h"
34 #ifdef HAVE_BUILTIN_EXPECT
35 #define likely(x) __builtin_expect((x) != 0, 1)
36 #define unlikely(x) __builtin_expect((x) != 0, 0)
39 #define unlikely(x) (x)
42 #define MAX_PACKS 4096
43 #define MAX_PACK_BYTES 0x8000000 // 128 MiB
46 DEMUXER_TYPE_UNKNOWN
= 0,
51 DEMUXER_TYPE_AVI_NINI
,
64 DEMUXER_TYPE_RAWAUDIO
,
70 DEMUXER_TYPE_RAWVIDEO
,
71 DEMUXER_TYPE_MPEG4_ES
,
75 DEMUXER_TYPE_MATROSKA
,
76 DEMUXER_TYPE_REALAUDIO
,
85 DEMUXER_TYPE_MPEG_PES
,
86 DEMUXER_TYPE_MPEG_GXF
,
88 DEMUXER_TYPE_LAVF_PREFERRED
,
89 DEMUXER_TYPE_RTP_NEMESI
,
93 /* Values after this are for internal use and can not be selected
94 * as demuxer type by the user (-demuxer option). */
97 DEMUXER_TYPE_DEMUXERS
,
98 DEMUXER_TYPE_PLAYLIST
,
101 enum timestamp_type
{
107 // DEMUXER control commands/answers
108 #define DEMUXER_CTRL_NOTIMPL -1
109 #define DEMUXER_CTRL_DONTKNOW 0
110 #define DEMUXER_CTRL_OK 1
111 #define DEMUXER_CTRL_GUESS 2
112 #define DEMUXER_CTRL_GET_TIME_LENGTH 10
113 #define DEMUXER_CTRL_GET_PERCENT_POS 11
114 #define DEMUXER_CTRL_SWITCH_AUDIO 12
115 #define DEMUXER_CTRL_RESYNC 13
116 #define DEMUXER_CTRL_SWITCH_VIDEO 14
117 #define DEMUXER_CTRL_IDENTIFY_PROGRAM 15
118 #define DEMUXER_CTRL_CORRECT_PTS 16
120 #define SEEK_ABSOLUTE (1 << 0)
121 #define SEEK_FACTOR (1 << 1)
122 #define SEEK_FORWARD (1 << 2)
123 #define SEEK_BACKWARD (1 << 3)
125 // demux_lavf can pass lavf buffers using FF_INPUT_BUFFER_PADDING_SIZE instead
126 #define MP_INPUT_BUFFER_PADDING_SIZE 16
128 typedef struct demux_stream
{
129 int buffer_pos
; // current buffer position
130 int buffer_size
; // current buffer size
131 unsigned char *buffer
; // current buffer, never free() it, always use free_demux_packet(buffer_ref);
132 double pts
; // current buffer's pts
133 int pts_bytes
; // number of bytes read after last pts stamp
134 int eof
; // end of demuxed stream? (true if all buffer empty)
135 off_t pos
; // position in the input stream (file)
136 off_t dpos
; // position in the demuxed stream
137 int pack_no
; // serial number of packet
138 int flags
; // flags of current packet (keyframe etc)
139 int non_interleaved
; // 1 if this stream is not properly interleaved,
140 // so e.g. subtitle handling must do explicit reads.
142 int packs
; // number of packets in buffer
143 int bytes
; // total bytes of packets in buffer
144 demux_packet_t
*first
; // read to current buffer from here
145 demux_packet_t
*last
; // append new packets from input stream to here
146 demux_packet_t
*current
; // needed for refcounting of the buffer
147 int id
; // stream ID (for multiple audio/video streams)
148 struct demuxer
*demuxer
; // parent demuxer structure (stream handler)
150 struct demux_packet
*asf_packet
; // read asf fragments here
153 unsigned int ss_mul
, ss_div
;
154 // ---- stream header ----
158 typedef struct demuxer_info
{
166 #define MAX_A_STREAMS 256
167 #define MAX_V_STREAMS 256
168 #define MAX_S_STREAMS 256
173 * Demuxer description structure
175 typedef struct demuxer_desc
{
176 const char *info
; // What is it (long name and/or description)
177 const char *name
; // Demuxer name, used with -demuxer switch
178 const char *shortdesc
; // Description printed at demuxer detection
179 const char *author
; // Demuxer author(s)
180 const char *comment
; // Comment, printed with -demuxer help
182 enum demuxer_type type
;
183 // If 1 detection is safe and fast, do it before file extension check
186 // Check if can demux the file, return DEMUXER_TYPE_xxx on success
187 // Mandatory if safe_check == 1, else optional
188 int (*check_file
)(struct demuxer
*demuxer
);
189 /// Get packets from file, return 0 on eof. Mandatory
190 int (*fill_buffer
)(struct demuxer
*demuxer
, struct demux_stream
*ds
);
191 /// Open the demuxer, return demuxer on success, NULL on failure
192 struct demuxer
*(*open
)(struct demuxer
*demuxer
); // Optional
193 /// Close the demuxer
194 void (*close
)(struct demuxer
*demuxer
); // Optional
196 void (*seek
)(struct demuxer
*demuxer
, float rel_seek_secs
,
197 float audio_delay
, int flags
);
198 // Various control functions. Optional
199 int (*control
)(struct demuxer
*demuxer
, int cmd
, void *arg
);
202 typedef struct demux_chapter
208 struct matroska_data
{
209 unsigned char segment_uid
[16];
210 // Ordered chapter information if any
211 struct matroska_chapter
{
214 bool has_segment_uid
;
215 unsigned char segment_uid
[16];
218 int num_ordered_chapters
;
221 typedef struct demux_attachment
226 unsigned int data_size
;
227 } demux_attachment_t
;
229 struct demuxer_params
{
230 unsigned char (*matroska_wanted_uids
)[16];
233 typedef struct demuxer
{
234 const demuxer_desc_t
*desc
; ///< Demuxer description structure
235 const char *filetype
; // format name when not identified by demuxer (libavformat)
236 off_t filepos
; // input stream current pos.
239 struct stream
*stream
;
240 double stream_pts
; // current stream pts, if applicable (e.g. dvd)
241 double reference_clock
;
242 char *filename
; // Needed by avs_check_file
243 int synced
; // stream synced (used by mpeg)
244 enum demuxer_type type
;
245 /* Normally the file_format field is just a copy of the type field above.
246 * There are 2 exceptions I noticed. Internal demux_avi may force
247 * ->type to DEMUXER_TYPE_AVI_[NI|NINI] while leaving ->file_format at
248 * DEMUXER_TYPE_AVI. Internal demux_mov may set ->type to
249 * DEMUXER_TYPE_PLAYLIST and also return that from the check function
250 * or not (looks potentially buggy). */
251 enum demuxer_type file_format
;
252 int seekable
; // flag
253 /* Set if using absolute seeks for small movements is OK (no pts resets
254 * that would make pts ambigious, preferably supports back/forward flags */
256 enum timestamp_type timestamp_type
;
258 struct demux_stream
*audio
; // audio buffer/demuxer
259 struct demux_stream
*video
; // video buffer/demuxer
260 struct demux_stream
*sub
; // dvd subtitle buffer/demuxer
263 struct sh_audio
*a_streams
[MAX_A_STREAMS
];
264 struct sh_video
*v_streams
[MAX_V_STREAMS
];
265 struct sh_sub
*s_streams
[MAX_S_STREAMS
];
267 // teletext decoder private data, if demuxer stream contains teletext
270 struct demux_chapter
*chapters
;
273 struct demux_attachment
*attachments
;
276 struct matroska_data matroska_data
;
277 // for trivial demuxers which just read the whole file for codec to use
278 struct bstr file_contents
;
280 void *priv
; // demuxer-specific internal data
281 char **info
; // metadata
283 struct demuxer_params
*params
;
287 int progid
; //program id
288 int aid
, vid
, sid
; //audio, video and subtitle id
291 struct demux_packet
*new_demux_packet(size_t len
);
292 // data must already have suitable padding
293 struct demux_packet
*new_demux_packet_fromdata(void *data
, size_t len
);
294 void resize_demux_packet(struct demux_packet
*dp
, size_t len
);
295 struct demux_packet
*clone_demux_packet(struct demux_packet
*pack
);
296 void free_demux_packet(struct demux_packet
*dp
);
299 #define SIZE_MAX ((size_t)-1)
302 static inline void *realloc_struct(void *ptr
, size_t nmemb
, size_t size
)
304 if (nmemb
> SIZE_MAX
/ size
) {
308 return realloc(ptr
, nmemb
* size
);
311 struct demuxer
*new_demuxer(struct MPOpts
*opts
, struct stream
*stream
,
312 int type
, int a_id
, int v_id
, int s_id
,
314 void free_demuxer(struct demuxer
*demuxer
);
316 void ds_add_packet(struct demux_stream
*ds
, struct demux_packet
*dp
);
317 void ds_read_packet(struct demux_stream
*ds
, struct stream
*stream
, int len
,
318 double pts
, off_t pos
, int flags
);
320 int demux_fill_buffer(struct demuxer
*demux
, struct demux_stream
*ds
);
321 int ds_fill_buffer(struct demux_stream
*ds
);
323 static inline off_t
ds_tell(struct demux_stream
*ds
)
325 return (ds
->dpos
- ds
->buffer_size
) + ds
->buffer_pos
;
328 static inline int ds_tell_pts(struct demux_stream
*ds
)
330 return (ds
->pts_bytes
- ds
->buffer_size
) + ds
->buffer_pos
;
333 int demux_read_data(struct demux_stream
*ds
, unsigned char *mem
, int len
);
334 int demux_pattern_3(struct demux_stream
*ds
, unsigned char *mem
, int maxlen
,
335 int *read
, uint32_t pattern
);
337 #define demux_peekc(ds) ( \
338 (likely(ds->buffer_pos<ds->buffer_size)) ? ds->buffer[ds->buffer_pos] \
339 : ((unlikely(!ds_fill_buffer(ds))) ? (-1) : ds->buffer[ds->buffer_pos]))
340 #define demux_getc(ds) ( \
341 (likely(ds->buffer_pos<ds->buffer_size)) ? ds->buffer[ds->buffer_pos++] \
342 : ((unlikely(!ds_fill_buffer(ds))) ? (-1) : ds->buffer[ds->buffer_pos++]))
344 void ds_free_packs(struct demux_stream
*ds
);
345 int ds_get_packet(struct demux_stream
*ds
, unsigned char **start
);
346 int ds_get_packet_pts(struct demux_stream
*ds
, unsigned char **start
,
348 int ds_get_packet_sub(struct demux_stream
*ds
, unsigned char **start
);
349 struct demux_packet
*ds_get_packet2(struct demux_stream
*ds
, bool repeat_last
);
350 double ds_get_next_pts(struct demux_stream
*ds
);
351 int ds_parse(struct demux_stream
*sh
, uint8_t **buffer
, int *len
, double pts
,
353 void ds_clear_parser(struct demux_stream
*sh
);
355 static inline int avi_stream_id(unsigned int id
)
361 return 100; // invalid ID
365 struct demuxer
*demux_open(struct MPOpts
*opts
, struct stream
*stream
,
366 int file_format
, int aid
, int vid
, int sid
,
369 struct demuxer
*demux_open_withparams(struct MPOpts
*opts
,
370 struct stream
*stream
, int file_format
, int aid
, int vid
, int sid
,
371 char *filename
, struct demuxer_params
*params
);
373 void demux_flush(struct demuxer
*demuxer
);
374 int demux_seek(struct demuxer
*demuxer
, float rel_seek_secs
, float audio_delay
,
376 struct demuxer
*new_demuxers_demuxer(struct demuxer
*vd
, struct demuxer
*ad
,
379 // AVI demuxer params:
380 extern int index_mode
; // -1=untouched 0=don't use index 1=use (generate) index
381 extern char *index_file_save
, *index_file_load
;
383 extern int pts_from_bps
;
385 int demux_info_add(struct demuxer
*demuxer
, const char *opt
, const char *param
);
386 int demux_info_add_bstr(struct demuxer
*demuxer
, struct bstr opt
,
388 char *demux_info_get(struct demuxer
*demuxer
, const char *opt
);
389 int demux_info_print(struct demuxer
*demuxer
);
390 int demux_control(struct demuxer
*demuxer
, int cmd
, void *arg
);
392 int demuxer_switch_audio(struct demuxer
*demuxer
, int index
);
393 int demuxer_switch_video(struct demuxer
*demuxer
, int index
);
395 int demuxer_type_by_filename(char *filename
);
397 void demuxer_help(void);
399 int demuxer_add_attachment(struct demuxer
*demuxer
, struct bstr name
,
400 struct bstr type
, struct bstr data
);
401 int demuxer_add_chapter(struct demuxer
*demuxer
, struct bstr name
,
402 uint64_t start
, uint64_t end
);
403 int demuxer_seek_chapter(struct demuxer
*demuxer
, int chapter
,
406 /// Get current chapter index if available.
407 int demuxer_get_current_chapter(struct demuxer
*demuxer
, double time_now
);
408 /// Get chapter name by index if available.
409 char *demuxer_chapter_name(struct demuxer
*demuxer
, int chapter
);
410 /// Get chapter start time and end time by index if available.
411 float demuxer_chapter_time(struct demuxer
*demuxer
, int chapter
, float *end
);
412 /// Get total chapter number.
413 int demuxer_chapter_count(struct demuxer
*demuxer
);
414 /// Get current angle index.
415 int demuxer_get_current_angle(struct demuxer
*demuxer
);
417 int demuxer_set_angle(struct demuxer
*demuxer
, int angle
);
418 /// Get number of angles.
419 int demuxer_angles_count(struct demuxer
*demuxer
);
421 /* Get the index of a track.
422 * lang is a string list, NULL is same as empty list
423 * Sort tracks based on the following criteria:
424 * 1) earlier match in lang list, or last no match
425 * 2) track is marked default (default wins)
426 * 3) track number (lower wins)
427 * For audio, select best track according to these criteria; only return -1
428 * if there are no tracks at all.
429 * For subs, select best track according to the same criteria, but return -1
430 * if all tracks are no-lang-match, not-default.
432 int demuxer_audio_track_by_lang_and_default(struct demuxer
*d
, char **langt
);
433 int demuxer_sub_track_by_lang_and_default(struct demuxer
*d
, char **langt
);
435 #endif /* MPLAYER_DEMUXER_H */