libmpdemux/demuxer.h

   1 #ifndef MPLAYER_DEMUXER_H
   2 #define MPLAYER_DEMUXER_H
   3
   4 #include <sys/types.h>
   5 #include <stdint.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8
   9 #include "stream/stream.h"
  10
  11 struct MPOpts;
  12
  13 #ifdef HAVE_BUILTIN_EXPECT
  14 #define likely(x) __builtin_expect ((x) != 0, 1)
  15 #define unlikely(x) __builtin_expect ((x) != 0, 0)
  16 #else
  17 #define likely(x) (x)
  18 #define unlikely(x) (x)
  19 #endif
  20
  21 #define MAX_PACKS 4096
  22 #define MAX_PACK_BYTES 0x8000000  // 128 MiB
  23
  24 #define DEMUXER_TYPE_UNKNOWN 0
  25 #define DEMUXER_TYPE_MPEG_ES 1
  26 #define DEMUXER_TYPE_MPEG_PS 2
  27 #define DEMUXER_TYPE_AVI 3
  28 #define DEMUXER_TYPE_AVI_NI 4
  29 #define DEMUXER_TYPE_AVI_NINI 5
  30 #define DEMUXER_TYPE_ASF 6
  31 #define DEMUXER_TYPE_MOV 7
  32 #define DEMUXER_TYPE_VIVO 8
  33 #define DEMUXER_TYPE_TV 9
  34 #define DEMUXER_TYPE_FLI 10
  35 #define DEMUXER_TYPE_REAL 11
  36 #define DEMUXER_TYPE_Y4M 12
  37 #define DEMUXER_TYPE_NUV 13
  38 #define DEMUXER_TYPE_FILM 14
  39 #define DEMUXER_TYPE_ROQ 15
  40 #define DEMUXER_TYPE_MF 16
  41 #define DEMUXER_TYPE_AUDIO 17
  42 #define DEMUXER_TYPE_OGG 18
  43 #define DEMUXER_TYPE_RAWAUDIO 20
  44 #define DEMUXER_TYPE_RTP 21
  45 #define DEMUXER_TYPE_RAWDV 22
  46 #define DEMUXER_TYPE_PVA 23
  47 #define DEMUXER_TYPE_SMJPEG 24
  48 #define DEMUXER_TYPE_XMMS 25
  49 #define DEMUXER_TYPE_RAWVIDEO 26
  50 #define DEMUXER_TYPE_MPEG4_ES 27
  51 #define DEMUXER_TYPE_GIF 28
  52 #define DEMUXER_TYPE_MPEG_TS 29
  53 #define DEMUXER_TYPE_H264_ES 30
  54 #define DEMUXER_TYPE_MATROSKA 31
  55 #define DEMUXER_TYPE_REALAUDIO 32
  56 #define DEMUXER_TYPE_MPEG_TY 33
  57 #define DEMUXER_TYPE_LMLM4 34
  58 #define DEMUXER_TYPE_LAVF 35
  59 #define DEMUXER_TYPE_NSV 36
  60 #define DEMUXER_TYPE_VQF 37
  61 #define DEMUXER_TYPE_AVS 38
  62 #define DEMUXER_TYPE_AAC 39
  63 #define DEMUXER_TYPE_MPC 40
  64 #define DEMUXER_TYPE_MPEG_PES 41
  65 #define DEMUXER_TYPE_MPEG_GXF 42
  66 #define DEMUXER_TYPE_NUT 43
  67 #define DEMUXER_TYPE_LAVF_PREFERRED 44
  68 #define DEMUXER_TYPE_RTP_NEMESI 45
  69 #define DEMUXER_TYPE_MNG 46
  70
  71 // This should always match the higest demuxer type number.
  72 // Unless you want to disallow users to force the demuxer to some types
  73 #define DEMUXER_TYPE_MIN 0
  74 #define DEMUXER_TYPE_MAX 46
  75
  76 #define DEMUXER_TYPE_DEMUXERS (1<<16)
  77 // A virtual demuxer type for the network code
  78 #define DEMUXER_TYPE_PLAYLIST (2<<16)
  79
  80
  81 #define MP_NOPTS_VALUE (-1LL<<63) //both int64_t and double should be able to represent this exactly
  82
  83
  84 // DEMUXER control commands/answers
  85 #define DEMUXER_CTRL_NOTIMPL -1
  86 #define DEMUXER_CTRL_DONTKNOW 0
  87 #define DEMUXER_CTRL_OK 1
  88 #define DEMUXER_CTRL_GUESS 2
  89 #define DEMUXER_CTRL_GET_TIME_LENGTH 10
  90 #define DEMUXER_CTRL_GET_PERCENT_POS 11
  91 #define DEMUXER_CTRL_SWITCH_AUDIO 12
  92 #define DEMUXER_CTRL_RESYNC 13
  93 #define DEMUXER_CTRL_SWITCH_VIDEO 14
  94 #define DEMUXER_CTRL_IDENTIFY_PROGRAM 15
  95 #define DEMUXER_CTRL_CORRECT_PTS 16
  96
  97 #define SEEK_ABSOLUTE (1 << 0)
  98 #define SEEK_FACTOR   (1 << 1)
  99
 100 #define MP_INPUT_BUFFER_PADDING_SIZE 8
 101
 102 // Holds one packet/frame/whatever
 103 typedef struct demux_packet {
 104   int len;
 105   double pts;
 106   double endpts;
 107   double stream_pts;
 108   off_t pos;  // position in index (AVI) or file (MPG)
 109   unsigned char* buffer;
 110   int flags; // keyframe, etc
 111   int refcount;   //refcounter for the master packet, if 0, buffer can be free()d
 112   struct demux_packet *master; //pointer to the master packet if this one is a cloned one
 113   struct demux_packet *next;
 114 } demux_packet_t;
 115
 116 typedef struct demux_stream {
 117   int buffer_pos;          // current buffer position
 118   int buffer_size;         // current buffer size
 119   unsigned char* buffer;   // current buffer, never free() it, always use free_demux_packet(buffer_ref);
 120   double pts;              // current buffer's pts
 121   int pts_bytes;           // number of bytes read after last pts stamp
 122   int eof;                 // end of demuxed stream? (true if all buffer empty)
 123   off_t pos;                 // position in the input stream (file)
 124   off_t dpos;                // position in the demuxed stream
 125   int pack_no;             // serial number of packet
 126   int flags;               // flags of current packet (keyframe etc)
 127 //---------------
 128   int packs;              // number of packets in buffer
 129   int bytes;              // total bytes of packets in buffer
 130   demux_packet_t *first;  // read to current buffer from here
 131   demux_packet_t *last;   // append new packets from input stream to here
 132   demux_packet_t *current;// needed for refcounting of the buffer
 133   int id;                 // stream ID  (for multiple audio/video streams)
 134   struct demuxer *demuxer; // parent demuxer structure (stream handler)
 135 // ---- asf -----
 136   demux_packet_t *asf_packet;  // read asf fragments here
 137   int asf_seq;
 138 // ---- mov -----
 139   unsigned int ss_mul,ss_div;
 140 // ---- stream header ----
 141   void* sh;
 142 } demux_stream_t;
 143
 144 typedef struct demuxer_info {
 145   char *name;
 146   char *author;
 147   char *encoder;
 148   char *comments;
 149   char *copyright;
 150 } demuxer_info_t;
 151
 152 #define MAX_A_STREAMS 256
 153 #define MAX_V_STREAMS 256
 154 #define MAX_S_STREAMS 32
 155
 156 struct demuxer;
 157
 158 /**
 159  * Demuxer description structure
 160  */
 161 typedef struct demuxer_desc {
 162   const char *info; ///< What is it (long name and/or description)
 163   const char *name; ///< Demuxer name, used with -demuxer switch
 164   const char *shortdesc; ///< Description printed at demuxer detection
 165   const char *author; ///< Demuxer author(s)
 166   const char *comment; ///< Comment, printed with -demuxer help
 167
 168   int type; ///< DEMUXER_TYPE_xxx
 169   int safe_check; ///< If 1 detection is safe and fast, do it before file extension check
 170
 171   /// Check if can demux the file, return DEMUXER_TYPE_xxx on success
 172   int (*check_file)(struct demuxer *demuxer); ///< Mandatory if safe_check == 1, else optional
 173   /// Get packets from file, return 0 on eof
 174   int (*fill_buffer)(struct demuxer *demuxer, demux_stream_t *ds); ///< Mandatory
 175   /// Open the demuxer, return demuxer on success, NULL on failure
 176   struct demuxer* (*open)(struct demuxer *demuxer); ///< Optional
 177   /// Close the demuxer
 178   void (*close)(struct demuxer *demuxer); ///< Optional
 179   // Seek
 180   void (*seek)(struct demuxer *demuxer, float rel_seek_secs, float audio_delay, int flags); ///< Optional
 181   // Control
 182   int (*control)(struct demuxer *demuxer, int cmd, void *arg); ///< Optional
 183 } demuxer_desc_t;
 184
 185 typedef struct demux_chapter
 186 {
 187   uint64_t start, end;
 188   char* name;
 189 } demux_chapter_t;
 190
 191 typedef struct demux_attachment
 192 {
 193   char* name;
 194   char* type;
 195   void* data;
 196   unsigned int data_size;
 197 } demux_attachment_t;
 198
 199 typedef struct demuxer {
 200   const demuxer_desc_t *desc;  ///< Demuxer description structure
 201   off_t filepos; // input stream current pos.
 202   off_t movi_start;
 203   off_t movi_end;
 204   stream_t *stream;
 205   double stream_pts;       // current stream pts, if applicable (e.g. dvd)
 206   double reference_clock;
 207   char *filename; ///< Needed by avs_check_file
 208   int synced;  // stream synced (used by mpeg)
 209   int type;    // demuxer type: mpeg PS, mpeg ES, avi, avi-ni, avi-nini, asf
 210   int file_format;  // file format: mpeg/avi/asf
 211   int seekable;  // flag
 212   //
 213   demux_stream_t *audio; // audio buffer/demuxer
 214   demux_stream_t *video; // video buffer/demuxer
 215   demux_stream_t *sub;   // dvd subtitle buffer/demuxer
 216
 217   // stream headers:
 218   struct sh_audio *a_streams[MAX_A_STREAMS];
 219   struct sh_video *v_streams[MAX_V_STREAMS];
 220   struct sh_sub   *s_streams[MAX_S_STREAMS];
 221
 222   demux_chapter_t* chapters;
 223   int num_chapters;
 224
 225   demux_attachment_t* attachments;
 226   int num_attachments;
 227
 228   void* priv;  // fileformat-dependent data
 229   char** info;
 230   struct MPOpts *opts;
 231 } demuxer_t;
 232
 233 typedef struct {
 234   int progid;        //program id
 235   int aid, vid, sid; //audio, video and subtitle id
 236 } demux_program_t;
 237
 238 static inline demux_packet_t* new_demux_packet(int len){
 239   demux_packet_t* dp=(demux_packet_t*)malloc(sizeof(demux_packet_t));
 240   dp->len=len;
 241   dp->next=NULL;
 242   dp->pts=MP_NOPTS_VALUE;
 243   dp->endpts=MP_NOPTS_VALUE;
 244   dp->stream_pts = MP_NOPTS_VALUE;
 245   dp->pos=0;
 246   dp->flags=0;
 247   dp->refcount=1;
 248   dp->master=NULL;
 249   dp->buffer=NULL;
 250   if (len > 0 && (dp->buffer = (unsigned char *)malloc(len + MP_INPUT_BUFFER_PADDING_SIZE)))
 251     memset(dp->buffer + len, 0, 8);
 252   else
 253     dp->len = 0;
 254   return dp;
 255 }
 256
 257 static inline void resize_demux_packet(demux_packet_t* dp, int len)
 258 {
 259   if(len > 0)
 260   {
 261      dp->buffer=(unsigned char *)realloc(dp->buffer,len+8);
 262   }
 263   else
 264   {
 265      if(dp->buffer) free(dp->buffer);
 266      dp->buffer=NULL;
 267   }
 268   dp->len=len;
 269   if (dp->buffer)
 270      memset(dp->buffer + len, 0, 8);
 271   else
 272      dp->len = 0;
 273 }
 274
 275 static inline demux_packet_t* clone_demux_packet(demux_packet_t* pack){
 276   demux_packet_t* dp=(demux_packet_t*)malloc(sizeof(demux_packet_t));
 277   while(pack->master) pack=pack->master; // find the master
 278   memcpy(dp,pack,sizeof(demux_packet_t));
 279   dp->next=NULL;
 280   dp->refcount=0;
 281   dp->master=pack;
 282   pack->refcount++;
 283   return dp;
 284 }
 285
 286 static inline void free_demux_packet(demux_packet_t* dp){
 287   if (dp->master==NULL){  //dp is a master packet
 288     dp->refcount--;
 289     if (dp->refcount==0){
 290       if (dp->buffer) free(dp->buffer);
 291       free(dp);
 292     }
 293     return;
 294   }
 295   // dp is a clone:
 296   free_demux_packet(dp->master);
 297   free(dp);
 298 }
 299
 300 #ifndef SIZE_MAX
 301 #define SIZE_MAX ((size_t)-1)
 302 #endif
 303
 304 static inline void *realloc_struct(void *ptr, size_t nmemb, size_t size) {
 305   if (nmemb > SIZE_MAX / size) {
 306     free(ptr);
 307     return NULL;
 308   }
 309   return realloc(ptr, nmemb * size);
 310 }
 311
 312 demux_stream_t* new_demuxer_stream(struct demuxer *demuxer,int id);
 313 demuxer_t* new_demuxer(struct MPOpts *opts, stream_t *stream,int type,int a_id,int v_id,int s_id,char *filename);
 314 void free_demuxer_stream(demux_stream_t *ds);
 315 void free_demuxer(demuxer_t *demuxer);
 316
 317 void ds_add_packet(demux_stream_t *ds,demux_packet_t* dp);
 318 void ds_read_packet(demux_stream_t *ds, stream_t *stream, int len, double pts, off_t pos, int flags);
 319
 320 int demux_fill_buffer(demuxer_t *demux,demux_stream_t *ds);
 321 int ds_fill_buffer(demux_stream_t *ds);
 322
 323 static inline off_t ds_tell(demux_stream_t *ds){
 324   return (ds->dpos-ds->buffer_size)+ds->buffer_pos;
 325 }
 326
 327 static inline int ds_tell_pts(demux_stream_t *ds){
 328   return (ds->pts_bytes-ds->buffer_size)+ds->buffer_pos;
 329 }
 330
 331 int demux_read_data(demux_stream_t *ds,unsigned char* mem,int len);
 332 int demux_pattern_3(demux_stream_t *ds, unsigned char *mem, int maxlen,
 333                     int *read, uint32_t pattern);
 334
 335 #define demux_peekc(ds) (\
 336      (likely(ds->buffer_pos<ds->buffer_size)) ? ds->buffer[ds->buffer_pos] \
 337      :((unlikely(!ds_fill_buffer(ds)))? (-1) : ds->buffer[ds->buffer_pos] ) )
 338 #if 1
 339 #define demux_getc(ds) (\
 340      (likely(ds->buffer_pos<ds->buffer_size)) ? ds->buffer[ds->buffer_pos++] \
 341      :((unlikely(!ds_fill_buffer(ds)))? (-1) : ds->buffer[ds->buffer_pos++] ) )
 342 #else
 343 static inline int demux_getc(demux_stream_t *ds){
 344   if(ds->buffer_pos>=ds->buffer_size){
 345     if(!ds_fill_buffer(ds)){
 346 //      printf("DEMUX_GETC: EOF reached!\n");
 347       return -1; // EOF
 348     }
 349   }
 350 //  printf("[%02X]",ds->buffer[ds->buffer_pos]);
 351   return ds->buffer[ds->buffer_pos++];
 352 }
 353 #endif
 354
 355 void ds_free_packs(demux_stream_t *ds);
 356 int ds_get_packet(demux_stream_t *ds,unsigned char **start);
 357 int ds_get_packet_pts(demux_stream_t *ds, unsigned char **start, double *pts);
 358 int ds_get_packet_sub(demux_stream_t *ds,unsigned char **start);
 359 double ds_get_next_pts(demux_stream_t *ds);
 360
 361 // This is defined here because demux_stream_t ins't defined in stream.h
 362 stream_t* new_ds_stream(demux_stream_t *ds);
 363
 364 static inline int avi_stream_id(unsigned int id){
 365   unsigned char *p=(unsigned char *)&id;
 366   unsigned char a,b;
 367 #if WORDS_BIGENDIAN
 368   a=p[3]-'0'; b=p[2]-'0';
 369 #else
 370   a=p[0]-'0'; b=p[1]-'0';
 371 #endif
 372   if(a>9 || b>9) return 100; // invalid ID
 373   return a*10+b;
 374 }
 375
 376 demuxer_t* demux_open(struct MPOpts *opts, stream_t *stream,int file_format,int aid,int vid,int sid,char* filename);
 377 void demux_flush(demuxer_t *demuxer);
 378 int demux_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags);
 379 demuxer_t*  new_demuxers_demuxer(demuxer_t* vd, demuxer_t* ad, demuxer_t* sd);
 380
 381 // AVI demuxer params:
 382 extern int index_mode;  // -1=untouched  0=don't use index  1=use (geneate) index
 383 extern char *index_file_save, *index_file_load;
 384 extern int force_ni;
 385 extern int pts_from_bps;
 386
 387 extern int extension_parsing;
 388
 389 int demux_info_add(demuxer_t *demuxer, const char *opt, const char *param);
 390 char* demux_info_get(demuxer_t *demuxer, const char *opt);
 391 int demux_info_print(demuxer_t *demuxer);
 392 int demux_control(demuxer_t *demuxer, int cmd, void *arg);
 393
 394 #ifdef CONFIG_OGGVORBIS
 395 /* Found in demux_ogg.c */
 396 int demux_ogg_num_subs(demuxer_t *demuxer);
 397 int demux_ogg_sub_id(demuxer_t *demuxer, int index);
 398 #endif
 399
 400 int demuxer_get_current_time(demuxer_t *demuxer);
 401 double demuxer_get_time_length(demuxer_t *demuxer);
 402 int demuxer_get_percent_pos(demuxer_t *demuxer);
 403 int demuxer_switch_audio(demuxer_t *demuxer, int index);
 404 int demuxer_switch_video(demuxer_t *demuxer, int index);
 405
 406 int demuxer_type_by_filename(char* filename);
 407
 408 void demuxer_help(void);
 409 int get_demuxer_type_from_name(char *demuxer_name, int *force);
 410
 411 int demuxer_add_attachment(demuxer_t* demuxer, const char* name,
 412                            const char* type, const void* data, size_t size);
 413
 414 int demuxer_add_chapter(demuxer_t* demuxer, const char* name, uint64_t start, uint64_t end);
 415 int demuxer_seek_chapter(demuxer_t *demuxer, int chapter, int mode, float *seek_pts, int *num_chapters, char **chapter_name);
 416
 417 /// Get current chapter index if available.
 418 int demuxer_get_current_chapter(demuxer_t *demuxer);
 419 /// Get chapter name by index if available.
 420 char *demuxer_chapter_name(demuxer_t *demuxer, int chapter);
 421 /// Get chapter display name by index.
 422 char *demuxer_chapter_display_name(demuxer_t *demuxer, int chapter);
 423 /// Get chapter start time and end time by index if available.
 424 float demuxer_chapter_time(demuxer_t *demuxer, int chapter, float *end);
 425 /// Get total chapter number.
 426 int demuxer_chapter_count(demuxer_t *demuxer);
 427 /// Get current angle index.
 428 int demuxer_get_current_angle(demuxer_t *demuxer);
 429 /// Set angle.
 430 int demuxer_set_angle(demuxer_t *demuxer, int angle);
 431 /// Get number of angles.
 432 int demuxer_angles_count(demuxer_t *demuxer);
 433
 434 // get the index of a track
 435 // lang is a comma-separated list
 436 int demuxer_audio_track_by_lang(demuxer_t* demuxer, char* lang);
 437 int demuxer_sub_track_by_lang(demuxer_t* demuxer, char* lang);
 438
 439 // find the default track
 440 // for subtitles, it is the first track with default attribute
 441 // for audio, additionally, the first track is selected if no track has default attribute set
 442 int demuxer_default_audio_track(demuxer_t* d);
 443 int demuxer_default_sub_track(demuxer_t* d);
 444
 445 #endif /* MPLAYER_DEMUXER_H */