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 #ifdef CONFIG_ASS
  11 #include "libass/ass_types.h"
  12 #endif
  13
  14 #ifdef HAVE_BUILTIN_EXPECT
  15 #define likely(x) __builtin_expect ((x) != 0, 1)
  16 #define unlikely(x) __builtin_expect ((x) != 0, 0)
  17 #else
  18 #define likely(x) (x)
  19 #define unlikely(x) (x)
  20 #endif
  21
  22 #define MAX_PACKS 4096
  23 #ifdef CONFIG_TV_BSDBT848
  24 #define MAX_PACK_BYTES 0x2000000
  25 #else
  26 #define MAX_PACK_BYTES 0x800000
  27 #endif
  28
  29 #define DEMUXER_TYPE_UNKNOWN 0
  30 #define DEMUXER_TYPE_MPEG_ES 1
  31 #define DEMUXER_TYPE_MPEG_PS 2
  32 #define DEMUXER_TYPE_AVI 3
  33 #define DEMUXER_TYPE_AVI_NI 4
  34 #define DEMUXER_TYPE_AVI_NINI 5
  35 #define DEMUXER_TYPE_ASF 6
  36 #define DEMUXER_TYPE_MOV 7
  37 #define DEMUXER_TYPE_VIVO 8
  38 #define DEMUXER_TYPE_TV 9
  39 #define DEMUXER_TYPE_FLI 10
  40 #define DEMUXER_TYPE_REAL 11
  41 #define DEMUXER_TYPE_Y4M 12
  42 #define DEMUXER_TYPE_NUV 13
  43 #define DEMUXER_TYPE_FILM 14
  44 #define DEMUXER_TYPE_ROQ 15
  45 #define DEMUXER_TYPE_MF 16
  46 #define DEMUXER_TYPE_AUDIO 17
  47 #define DEMUXER_TYPE_OGG 18
  48 #define DEMUXER_TYPE_RAWAUDIO 20
  49 #define DEMUXER_TYPE_RTP 21
  50 #define DEMUXER_TYPE_RAWDV 22
  51 #define DEMUXER_TYPE_PVA 23
  52 #define DEMUXER_TYPE_SMJPEG 24
  53 #define DEMUXER_TYPE_XMMS 25
  54 #define DEMUXER_TYPE_RAWVIDEO 26
  55 #define DEMUXER_TYPE_MPEG4_ES 27
  56 #define DEMUXER_TYPE_GIF 28
  57 #define DEMUXER_TYPE_MPEG_TS 29
  58 #define DEMUXER_TYPE_H264_ES 30
  59 #define DEMUXER_TYPE_MATROSKA 31
  60 #define DEMUXER_TYPE_REALAUDIO 32
  61 #define DEMUXER_TYPE_MPEG_TY 33
  62 #define DEMUXER_TYPE_LMLM4 34
  63 #define DEMUXER_TYPE_LAVF 35
  64 #define DEMUXER_TYPE_NSV 36
  65 #define DEMUXER_TYPE_VQF 37
  66 #define DEMUXER_TYPE_AVS 38
  67 #define DEMUXER_TYPE_AAC 39
  68 #define DEMUXER_TYPE_MPC 40
  69 #define DEMUXER_TYPE_MPEG_PES 41
  70 #define DEMUXER_TYPE_MPEG_GXF 42
  71 #define DEMUXER_TYPE_NUT 43
  72 #define DEMUXER_TYPE_LAVF_PREFERRED 44
  73 #define DEMUXER_TYPE_RTP_NEMESI 45
  74
  75 // This should always match the higest demuxer type number.
  76 // Unless you want to disallow users to force the demuxer to some types
  77 #define DEMUXER_TYPE_MIN 0
  78 #define DEMUXER_TYPE_MAX 45
  79
  80 #define DEMUXER_TYPE_DEMUXERS (1<<16)
  81 // A virtual demuxer type for the network code
  82 #define DEMUXER_TYPE_PLAYLIST (2<<16)
  83
  84
  85 #define MP_NOPTS_VALUE (-1LL<<63) //both int64_t and double should be able to represent this exactly
  86
  87
  88 // DEMUXER control commands/answers
  89 #define DEMUXER_CTRL_NOTIMPL -1
  90 #define DEMUXER_CTRL_DONTKNOW 0
  91 #define DEMUXER_CTRL_OK 1
  92 #define DEMUXER_CTRL_GUESS 2
  93 #define DEMUXER_CTRL_GET_TIME_LENGTH 10
  94 #define DEMUXER_CTRL_GET_PERCENT_POS 11
  95 #define DEMUXER_CTRL_SWITCH_AUDIO 12
  96 #define DEMUXER_CTRL_RESYNC 13
  97 #define DEMUXER_CTRL_SWITCH_VIDEO 14
  98 #define DEMUXER_CTRL_IDENTIFY_PROGRAM 15
  99 #define DEMUXER_CTRL_CORRECT_PTS 16
 100
 101 #define SEEK_ABSOLUTE (1 << 0)
 102 #define SEEK_FACTOR   (1 << 1)
 103
 104 #define MP_INPUT_BUFFER_PADDING_SIZE 8
 105
 106 // Holds one packet/frame/whatever
 107 typedef struct demux_packet_st {
 108   int len;
 109   double pts;
 110   double endpts;
 111   double stream_pts;
 112   off_t pos;  // position in index (AVI) or file (MPG)
 113   unsigned char* buffer;
 114   int flags; // keyframe, etc
 115   int refcount;   //refcounter for the master packet, if 0, buffer can be free()d
 116   struct demux_packet_st* master; //pointer to the master packet if this one is a cloned one
 117   struct demux_packet_st* next;
 118 } demux_packet_t;
 119
 120 typedef struct {
 121   int buffer_pos;          // current buffer position
 122   int buffer_size;         // current buffer size
 123   unsigned char* buffer;   // current buffer, never free() it, always use free_demux_packet(buffer_ref);
 124   double pts;              // current buffer's pts
 125   int pts_bytes;           // number of bytes read after last pts stamp
 126   int eof;                 // end of demuxed stream? (true if all buffer empty)
 127   off_t pos;                 // position in the input stream (file)
 128   off_t dpos;                // position in the demuxed stream
 129   int pack_no;             // serial number of packet
 130   int flags;               // flags of current packet (keyframe etc)
 131 //---------------
 132   int packs;              // number of packets in buffer
 133   int bytes;              // total bytes of packets in buffer
 134   demux_packet_t *first;  // read to current buffer from here
 135   demux_packet_t *last;   // append new packets from input stream to here
 136   demux_packet_t *current;// needed for refcounting of the buffer
 137   int id;                 // stream ID  (for multiple audio/video streams)
 138   struct demuxer_st *demuxer; // parent demuxer structure (stream handler)
 139 // ---- asf -----
 140   demux_packet_t *asf_packet;  // read asf fragments here
 141   int asf_seq;
 142 // ---- mov -----
 143   unsigned int ss_mul,ss_div;
 144 // ---- stream header ----
 145   void* sh;
 146 } demux_stream_t;
 147
 148 typedef struct demuxer_info_st {
 149   char *name;
 150   char *author;
 151   char *encoder;
 152   char *comments;
 153   char *copyright;
 154 } demuxer_info_t;
 155
 156 #define MAX_A_STREAMS 256
 157 #define MAX_V_STREAMS 256
 158 #define MAX_S_STREAMS 32
 159
 160 struct demuxer_st;
 161
 162 extern int correct_pts;
 163 extern int user_correct_pts;
 164
 165 /**
 166  * Demuxer description structure
 167  */
 168 typedef struct demuxers_desc_st {
 169   const char *info; ///< What is it (long name and/or description)
 170   const char *name; ///< Demuxer name, used with -demuxer switch
 171   const char *shortdesc; ///< Description printed at demuxer detection
 172   const char *author; ///< Demuxer author(s)
 173   const char *comment; ///< Comment, printed with -demuxer help
 174
 175   int type; ///< DEMUXER_TYPE_xxx
 176   int safe_check; ///< If 1 detection is safe and fast, do it before file extension check
 177
 178   /// Check if can demux the file, return DEMUXER_TYPE_xxx on success
 179   int (*check_file)(struct demuxer_st *demuxer); ///< Mandatory if safe_check == 1, else optional
 180   /// Get packets from file, return 0 on eof
 181   int (*fill_buffer)(struct demuxer_st *demuxer, demux_stream_t *ds); ///< Mandatory
 182   /// Open the demuxer, return demuxer on success, NULL on failure
 183   struct demuxer_st* (*open)(struct demuxer_st *demuxer); ///< Optional
 184   /// Close the demuxer
 185   void (*close)(struct demuxer_st *demuxer); ///< Optional
 186   // Seek
 187   void (*seek)(struct demuxer_st *demuxer, float rel_seek_secs, float audio_delay, int flags); ///< Optional
 188   // Control
 189   int (*control)(struct demuxer_st *demuxer, int cmd, void *arg); ///< Optional
 190 } demuxer_desc_t;
 191
 192 typedef struct demux_chapter_s
 193 {
 194   uint64_t start, end;
 195   char* name;
 196 } demux_chapter_t;
 197
 198 typedef struct demux_attachment_s
 199 {
 200   char* name;
 201   char* type;
 202   void* data;
 203   unsigned int data_size;
 204 } demux_attachment_t;
 205
 206 typedef struct demuxer_st {
 207   const demuxer_desc_t *desc;  ///< Demuxer description structure
 208   off_t filepos; // input stream current pos.
 209   off_t movi_start;
 210   off_t movi_end;
 211   stream_t *stream;
 212   double stream_pts;       // current stream pts, if applicable (e.g. dvd)
 213   double reference_clock;
 214   char *filename; ///< Needed by avs_check_file
 215   int synced;  // stream synced (used by mpeg)
 216   int type;    // demuxer type: mpeg PS, mpeg ES, avi, avi-ni, avi-nini, asf
 217   int file_format;  // file format: mpeg/avi/asf
 218   int seekable;  // flag
 219   //
 220   demux_stream_t *audio; // audio buffer/demuxer
 221   demux_stream_t *video; // video buffer/demuxer
 222   demux_stream_t *sub;   // dvd subtitle buffer/demuxer
 223
 224   // stream headers:
 225   void* a_streams[MAX_A_STREAMS]; // audio streams (sh_audio_t)
 226   void* v_streams[MAX_V_STREAMS]; // video sterams (sh_video_t)
 227   void *s_streams[MAX_S_STREAMS];   // dvd subtitles (flag)
 228
 229   demux_chapter_t* chapters;
 230   int num_chapters;
 231
 232   demux_attachment_t* attachments;
 233   int num_attachments;
 234
 235   void* priv;  // fileformat-dependent data
 236   char** info;
 237 } demuxer_t;
 238
 239 typedef struct {
 240   int progid;        //program id
 241   int aid, vid, sid; //audio, video and subtitle id
 242 } demux_program_t;
 243
 244 static inline demux_packet_t* new_demux_packet(int len){
 245   demux_packet_t* dp=(demux_packet_t*)malloc(sizeof(demux_packet_t));
 246   dp->len=len;
 247   dp->next=NULL;
 248   dp->pts=MP_NOPTS_VALUE;
 249   dp->endpts=MP_NOPTS_VALUE;
 250   dp->stream_pts = MP_NOPTS_VALUE;
 251   dp->pos=0;
 252   dp->flags=0;
 253   dp->refcount=1;
 254   dp->master=NULL;
 255   dp->buffer=NULL;
 256   if (len > 0 && (dp->buffer = (unsigned char *)malloc(len + MP_INPUT_BUFFER_PADDING_SIZE)))
 257     memset(dp->buffer + len, 0, 8);
 258   else
 259     dp->len = 0;
 260   return dp;
 261 }
 262
 263 static inline void resize_demux_packet(demux_packet_t* dp, int len)
 264 {
 265   if(len > 0)
 266   {
 267      dp->buffer=(unsigned char *)realloc(dp->buffer,len+8);
 268   }
 269   else
 270   {
 271      if(dp->buffer) free(dp->buffer);
 272      dp->buffer=NULL;
 273   }
 274   dp->len=len;
 275   if (dp->buffer)
 276      memset(dp->buffer + len, 0, 8);
 277   else
 278      dp->len = 0;
 279 }
 280
 281 static inline demux_packet_t* clone_demux_packet(demux_packet_t* pack){
 282   demux_packet_t* dp=(demux_packet_t*)malloc(sizeof(demux_packet_t));
 283   while(pack->master) pack=pack->master; // find the master
 284   memcpy(dp,pack,sizeof(demux_packet_t));
 285   dp->next=NULL;
 286   dp->refcount=0;
 287   dp->master=pack;
 288   pack->refcount++;
 289   return dp;
 290 }
 291
 292 static inline void free_demux_packet(demux_packet_t* dp){
 293   if (dp->master==NULL){  //dp is a master packet
 294     dp->refcount--;
 295     if (dp->refcount==0){
 296       if (dp->buffer) free(dp->buffer);
 297       free(dp);
 298     }
 299     return;
 300   }
 301   // dp is a clone:
 302   free_demux_packet(dp->master);
 303   free(dp);
 304 }
 305
 306 #ifndef SIZE_MAX
 307 #define SIZE_MAX ((size_t)-1)
 308 #endif
 309
 310 static inline void *realloc_struct(void *ptr, size_t nmemb, size_t size) {
 311   if (nmemb > SIZE_MAX / size) {
 312     free(ptr);
 313     return NULL;
 314   }
 315   return realloc(ptr, nmemb * size);
 316 }
 317
 318 demux_stream_t* new_demuxer_stream(struct demuxer_st *demuxer,int id);
 319 demuxer_t* new_demuxer(stream_t *stream,int type,int a_id,int v_id,int s_id,char *filename);
 320 void free_demuxer_stream(demux_stream_t *ds);
 321 void free_demuxer(demuxer_t *demuxer);
 322
 323 void ds_add_packet(demux_stream_t *ds,demux_packet_t* dp);
 324 void ds_read_packet(demux_stream_t *ds, stream_t *stream, int len, double pts, off_t pos, int flags);
 325
 326 int demux_fill_buffer(demuxer_t *demux,demux_stream_t *ds);
 327 int ds_fill_buffer(demux_stream_t *ds);
 328
 329 static inline off_t ds_tell(demux_stream_t *ds){
 330   return (ds->dpos-ds->buffer_size)+ds->buffer_pos;
 331 }
 332
 333 static inline int ds_tell_pts(demux_stream_t *ds){
 334   return (ds->pts_bytes-ds->buffer_size)+ds->buffer_pos;
 335 }
 336
 337 int demux_read_data(demux_stream_t *ds,unsigned char* mem,int len);
 338 int demux_pattern_3(demux_stream_t *ds, unsigned char *mem, int maxlen,
 339                     int *read, uint32_t pattern);
 340
 341 #define demux_peekc(ds) (\
 342      (likely(ds->buffer_pos<ds->buffer_size)) ? ds->buffer[ds->buffer_pos] \
 343      :((unlikely(!ds_fill_buffer(ds)))? (-1) : ds->buffer[ds->buffer_pos] ) )
 344 #if 1
 345 #define demux_getc(ds) (\
 346      (likely(ds->buffer_pos<ds->buffer_size)) ? ds->buffer[ds->buffer_pos++] \
 347      :((unlikely(!ds_fill_buffer(ds)))? (-1) : ds->buffer[ds->buffer_pos++] ) )
 348 #else
 349 static inline int demux_getc(demux_stream_t *ds){
 350   if(ds->buffer_pos>=ds->buffer_size){
 351     if(!ds_fill_buffer(ds)){
 352 //      printf("DEMUX_GETC: EOF reached!\n");
 353       return -1; // EOF
 354     }
 355   }
 356 //  printf("[%02X]",ds->buffer[ds->buffer_pos]);
 357   return ds->buffer[ds->buffer_pos++];
 358 }
 359 #endif
 360
 361 void ds_free_packs(demux_stream_t *ds);
 362 int ds_get_packet(demux_stream_t *ds,unsigned char **start);
 363 int ds_get_packet_pts(demux_stream_t *ds, unsigned char **start, double *pts);
 364 int ds_get_packet_sub(demux_stream_t *ds,unsigned char **start);
 365 double ds_get_next_pts(demux_stream_t *ds);
 366
 367 // This is defined here because demux_stream_t ins't defined in stream.h
 368 stream_t* new_ds_stream(demux_stream_t *ds);
 369
 370 static inline int avi_stream_id(unsigned int id){
 371   unsigned char *p=(unsigned char *)&id;
 372   unsigned char a,b;
 373 #if WORDS_BIGENDIAN
 374   a=p[3]-'0'; b=p[2]-'0';
 375 #else
 376   a=p[0]-'0'; b=p[1]-'0';
 377 #endif
 378   if(a>9 || b>9) return 100; // invalid ID
 379   return a*10+b;
 380 }
 381
 382 demuxer_t* demux_open(stream_t *stream,int file_format,int aid,int vid,int sid,char* filename);
 383 void demux_flush(demuxer_t *demuxer);
 384 int demux_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags);
 385 demuxer_t*  new_demuxers_demuxer(demuxer_t* vd, demuxer_t* ad, demuxer_t* sd);
 386
 387 // AVI demuxer params:
 388 extern int index_mode;  // -1=untouched  0=don't use index  1=use (geneate) index
 389 extern char *index_file_save, *index_file_load;
 390 extern int force_ni;
 391 extern int pts_from_bps;
 392
 393 extern int extension_parsing;
 394
 395 int demux_info_add(demuxer_t *demuxer, const char *opt, const char *param);
 396 char* demux_info_get(demuxer_t *demuxer, const char *opt);
 397 int demux_info_print(demuxer_t *demuxer);
 398 int demux_control(demuxer_t *demuxer, int cmd, void *arg);
 399
 400 #ifdef CONFIG_OGGVORBIS
 401 /* Found in demux_ogg.c */
 402 int demux_ogg_num_subs(demuxer_t *demuxer);
 403 int demux_ogg_sub_id(demuxer_t *demuxer, int index);
 404 #endif
 405
 406 extern int demuxer_get_current_time(demuxer_t *demuxer);
 407 extern double demuxer_get_time_length(demuxer_t *demuxer);
 408 extern int demuxer_get_percent_pos(demuxer_t *demuxer);
 409 extern int demuxer_switch_audio(demuxer_t *demuxer, int index);
 410 extern int demuxer_switch_video(demuxer_t *demuxer, int index);
 411
 412 extern int demuxer_type_by_filename(char* filename);
 413
 414 extern void demuxer_help(void);
 415 extern int get_demuxer_type_from_name(char *demuxer_name, int *force);
 416
 417 int demuxer_add_attachment(demuxer_t* demuxer, const char* name,
 418                            const char* type, const void* data, size_t size);
 419
 420 int demuxer_add_chapter(demuxer_t* demuxer, const char* name, uint64_t start, uint64_t end);
 421 int demuxer_seek_chapter(demuxer_t *demuxer, int chapter, int mode, float *seek_pts, int *num_chapters, char **chapter_name);
 422
 423 /// Get current chapter index if available.
 424 int demuxer_get_current_chapter(demuxer_t *demuxer);
 425 /// Get chapter name by index if available.
 426 char *demuxer_chapter_name(demuxer_t *demuxer, int chapter);
 427 /// Get chapter display name by index.
 428 char *demuxer_chapter_display_name(demuxer_t *demuxer, int chapter);
 429 /// Get chapter start time and end time by index if available.
 430 float demuxer_chapter_time(demuxer_t *demuxer, int chapter, float *end);
 431 /// Get total chapter number.
 432 int demuxer_chapter_count(demuxer_t *demuxer);
 433 /// Get current angle index.
 434 int demuxer_get_current_angle(demuxer_t *demuxer);
 435 /// Set angle.
 436 int demuxer_set_angle(demuxer_t *demuxer, int angle);
 437 /// Get number of angles.
 438 int demuxer_angles_count(demuxer_t *demuxer);
 439
 440 // get the index of a track
 441 // lang is a comma-separated list
 442 int demuxer_audio_track_by_lang(demuxer_t* demuxer, char* lang);
 443 int demuxer_sub_track_by_lang(demuxer_t* demuxer, char* lang);
 444
 445 // find the default track
 446 // for subtitles, it is the first track with default attribute
 447 // for audio, additionally, the first track is selected if no track has default attribute set
 448 int demuxer_default_audio_track(demuxer_t* d);
 449 int demuxer_default_sub_track(demuxer_t* d);
 450
 451 #endif /* MPLAYER_DEMUXER_H */