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