git.sesse.net Git - vlc/blob - modules/access/rtmp/access.c

   1 /*****************************************************************************
   2  * access.c: RTMP input.
   3  *****************************************************************************
   4  * Copyright (C) URJC - LADyR - Luis Lopez Fernandez
   5  *
   6  * Author: Miguel Angel Cabrera Moya
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <vlc_common.h>
  31 #include <vlc_plugin.h>
  32 #include <vlc_access.h>
  33
  34 #include <vlc_network.h> /* DOWN: #include <network.h> */
  35 #include <vlc_url.h>
  36 #include <vlc_block.h>
  37
  38 #include "rtmp_amf_flv.h"
  39
  40 /*****************************************************************************
  41  * Module descriptor
  42  *****************************************************************************/
  43 #define CACHING_TEXT N_("Caching value in ms")
  44 #define CACHING_LONGTEXT N_( \
  45     "Caching value for RTMP streams. This " \
  46     "value should be set in milliseconds." )
  47
  48 #define SWFURL_TEXT N_("Default SWF Referrer URL")
  49 #define SWFURL_LONGTEXT N_("The SFW URL to use as referrer when connecting to "\
  50                            "the server. This is the SWF file that contained "  \
  51                            "the stream.")
  52
  53 #define PAGEURL_TEXT N_("Default Page Referrer URL")
  54 #define PAGEURL_LONGTEXT N_("The Page URL to use as referrer when connecting to "  \
  55                             "the server. This is the page housing the SWF "    \
  56                             "file.")
  57
  58 static int  Open ( vlc_object_t * );
  59 static void Close( vlc_object_t * );
  60
  61 vlc_module_begin ()
  62     set_description( N_("RTMP input") )
  63     set_shortname( N_("RTMP") )
  64     set_category( CAT_INPUT )
  65     set_subcategory( SUBCAT_INPUT_ACCESS )
  66
  67     add_integer( "rtmp-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT,
  68                  CACHING_LONGTEXT, true )
  69     add_string( "rtmp-swfurl", "file:///player.swf", NULL, SWFURL_TEXT,
  70                 SWFURL_LONGTEXT, true )
  71     add_string( "rtmp-pageurl", "file:///player.htm", NULL, PAGEURL_TEXT,
  72                 PAGEURL_LONGTEXT, true )
  73
  74     set_capability( "access", 0 )
  75     set_callbacks( Open, Close )
  76     add_shortcut( "rtmp" )
  77 vlc_module_end ()
  78
  79
  80 /*****************************************************************************
  81  * Local prototypes
  82  *****************************************************************************/
  83 static ssize_t  Read( access_t *, uint8_t *, size_t );
  84 static int Seek( access_t *, int64_t );
  85 static int Control( access_t *, int, va_list );
  86
  87 static void* ThreadControl( vlc_object_t * );
  88
  89 /*****************************************************************************
  90  * Open: open the rtmp connection
  91  *****************************************************************************/
  92 static int Open( vlc_object_t *p_this )
  93 {
  94     access_t *p_access = (access_t *) p_this;
  95     access_sys_t *p_sys;
  96     char *psz, *p;
  97     int length_path, length_media_name;
  98     int i;
  99
 100     STANDARD_READ_ACCESS_INIT
 101
 102     p_sys->p_thread =
 103         vlc_object_create( p_access, sizeof( rtmp_control_thread_t ) );
 104     if( !p_sys->p_thread )
 105         return VLC_ENOMEM;
 106     vlc_object_attach( p_sys->p_thread, p_access );
 107
 108     /* Parse URI - remove spaces */
 109     p = psz = strdup( p_access->psz_path );
 110     while( (p = strchr( p, ' ' )) != NULL )
 111         *p = '+';
 112     vlc_UrlParse( &p_sys->p_thread->url, psz, 0 );
 113     free( psz );
 114
 115     if( p_sys->p_thread->url.psz_host == NULL
 116         || *p_sys->p_thread->url.psz_host == '\0' )
 117     {
 118         msg_Warn( p_access, "invalid host" );
 119         goto error;
 120     }
 121
 122     if( p_sys->p_thread->url.i_port <= 0 )
 123         p_sys->p_thread->url.i_port = 1935;
 124
 125     if( p_sys->p_thread->url.psz_path == NULL )
 126     {
 127         msg_Warn( p_access, "invalid path" );
 128         goto error;
 129     }
 130
 131     length_path = strlen( p_sys->p_thread->url.psz_path );
 132     char* psz_tmp = strrchr( p_sys->p_thread->url.psz_path, '/' );
 133     if( !psz_tmp )
 134         goto error;
 135     length_media_name = strlen( psz_tmp ) - 1;
 136
 137     p_sys->p_thread->psz_application = strndup( p_sys->p_thread->url.psz_path + 1, length_path - length_media_name - 2 );
 138     p_sys->p_thread->psz_media = strdup( p_sys->p_thread->url.psz_path + ( length_path - length_media_name ) );
 139
 140     p_sys->p_thread->psz_swf_url = var_CreateGetString( p_access, "rtmp-swfurl" );
 141     p_sys->p_thread->psz_page_url = var_CreateGetString( p_access, "rtmp-pageurl" );
 142
 143     msg_Dbg( p_access, "rtmp: host='%s' port=%d path='%s'",
 144              p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port, p_sys->p_thread->url.psz_path );
 145
 146     if( p_sys->p_thread->url.psz_username && *p_sys->p_thread->url.psz_username )
 147     {
 148         msg_Dbg( p_access, "      user='%s'", p_sys->p_thread->url.psz_username );
 149     }
 150
 151     /* Initialize thread variables */
 152     p_sys->p_thread->b_die = 0;
 153     p_sys->p_thread->b_error= 0;
 154     p_sys->p_thread->p_fifo_input = block_FifoNew();
 155     p_sys->p_thread->p_empty_blocks = block_FifoNew();
 156     p_sys->p_thread->has_audio = 0;
 157     p_sys->p_thread->has_video = 0;
 158     p_sys->p_thread->metadata_received = 0;
 159     p_sys->p_thread->first_media_packet = 1;
 160     p_sys->p_thread->flv_tag_previous_tag_size = 0x00000000; /* FLV_TAG_FIRST_PREVIOUS_TAG_SIZE */
 161     p_sys->p_thread->chunk_size_recv = 128; /* RTMP_DEFAULT_CHUNK_SIZE */
 162     p_sys->p_thread->chunk_size_send = 128; /* RTMP_DEFAULT_CHUNK_SIZE */
 163     for(i = 0; i < 64; i++)
 164     {
 165         memset( &p_sys->p_thread->rtmp_headers_recv[i], 0, sizeof( rtmp_packet_t ) );
 166         p_sys->p_thread->rtmp_headers_send[i].length_header = -1;
 167         p_sys->p_thread->rtmp_headers_send[i].stream_index = -1;
 168         p_sys->p_thread->rtmp_headers_send[i].timestamp = -1;
 169         p_sys->p_thread->rtmp_headers_send[i].timestamp_relative = -1;
 170         p_sys->p_thread->rtmp_headers_send[i].length_encoded = -1;
 171         p_sys->p_thread->rtmp_headers_send[i].length_body = -1;
 172         p_sys->p_thread->rtmp_headers_send[i].content_type = -1;
 173         p_sys->p_thread->rtmp_headers_send[i].src_dst = -1;
 174         p_sys->p_thread->rtmp_headers_send[i].body = NULL;
 175     }
 176
 177     p_sys->p_thread->p_base_object = p_this;
 178
 179     vlc_cond_init( &p_sys->p_thread->wait );
 180
 181     vlc_mutex_init( &p_sys->p_thread->lock );
 182
 183     p_sys->p_thread->result_connect = 1;
 184     p_sys->p_thread->result_play = 1;
 185     p_sys->p_thread->result_stop = 0;
 186
 187     /* Open connection */
 188     p_sys->p_thread->fd = net_ConnectTCP( p_access, p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port );
 189     if( p_sys->p_thread->fd == -1 )
 190     {
 191         int *p_fd_listen;
 192
 193         msg_Warn( p_access, "cannot connect to %s:%d", p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port );
 194         msg_Dbg( p_access, "switching to passive mode" );
 195
 196         p_sys->active = 0;
 197
 198         p_fd_listen = net_ListenTCP( p_access, p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port );
 199         if( p_fd_listen == NULL )
 200         {
 201             msg_Err( p_access, "cannot listen to %s port %i", p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port );
 202             goto error2;
 203         }
 204
 205         p_sys->p_thread->fd = net_Accept( p_access, p_fd_listen );
 206
 207         net_ListenClose( p_fd_listen );
 208
 209         if( rtmp_handshake_passive( p_this, p_sys->p_thread->fd ) < 0 )
 210         {
 211             msg_Err( p_access, "handshake passive failed");
 212             goto error2;
 213         }
 214
 215         p_sys->p_thread->result_publish = 1;
 216     }
 217     else
 218     {
 219         p_sys->active = 1;
 220
 221         if( rtmp_handshake_active( p_this, p_sys->p_thread->fd ) < 0 )
 222         {
 223             msg_Err( p_access, "handshake active failed");
 224             goto error2;
 225         }
 226
 227         p_sys->p_thread->result_publish = 0;
 228     }
 229
 230     if( vlc_thread_create( p_sys->p_thread, "rtmp control thread", ThreadControl,
 231                            VLC_THREAD_PRIORITY_INPUT ) )
 232     {
 233         msg_Err( p_access, "cannot spawn rtmp control thread" );
 234         goto error2;
 235     }
 236
 237     if( p_sys->active )
 238     {
 239         if( rtmp_connect_active( p_sys->p_thread ) < 0 )
 240         {
 241             msg_Err( p_access, "connect active failed");
 242             /* Kill the running thread */
 243             vlc_object_kill( p_sys->p_thread );
 244             block_FifoWake( p_sys->p_thread->p_fifo_input );
 245             vlc_thread_join( p_sys->p_thread );
 246             goto error2;
 247         }
 248     }
 249
 250     /* Set vars for reading from fifo */
 251     p_access->p_sys->flv_packet = NULL;
 252     p_access->p_sys->read_packet = 1;
 253
 254     /* Update default_pts to a suitable value for rtmp access */
 255     var_Create( p_access, "rtmp-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 256
 257     return VLC_SUCCESS;
 258
 259 error2:
 260     vlc_cond_destroy( &p_sys->p_thread->wait );
 261     vlc_mutex_destroy( &p_sys->p_thread->lock );
 262
 263     block_FifoRelease( p_sys->p_thread->p_fifo_input );
 264     block_FifoRelease( p_sys->p_thread->p_empty_blocks );
 265
 266     free( p_sys->p_thread->psz_application );
 267     free( p_sys->p_thread->psz_media );
 268     free( p_sys->p_thread->psz_swf_url );
 269     free( p_sys->p_thread->psz_page_url );
 270
 271     net_Close( p_sys->p_thread->fd );
 272 error:
 273     vlc_UrlClean( &p_sys->p_thread->url );
 274
 275     vlc_object_detach( p_sys->p_thread );
 276     vlc_object_release( p_sys->p_thread );
 277
 278     free( p_sys );
 279
 280     return VLC_EGENERIC;
 281 }
 282
 283 /*****************************************************************************
 284  * Close: close the rtmp connection
 285  *****************************************************************************/
 286 static void Close( vlc_object_t * p_this )
 287 {
 288     access_t     *p_access = (access_t *) p_this;
 289     access_sys_t *p_sys = p_access->p_sys;
 290     int i;
 291
 292 /*    p_sys->p_thread->b_die = true;*/
 293     vlc_object_kill( p_sys->p_thread );
 294     block_FifoWake( p_sys->p_thread->p_fifo_input );
 295
 296     vlc_thread_join( p_sys->p_thread );
 297
 298     vlc_cond_destroy( &p_sys->p_thread->wait );
 299     vlc_mutex_destroy( &p_sys->p_thread->lock );
 300
 301     block_FifoRelease( p_sys->p_thread->p_fifo_input );
 302     block_FifoRelease( p_sys->p_thread->p_empty_blocks );
 303
 304     for( i = 0; i < 64; i++ ) /* RTMP_HEADER_STREAM_INDEX_MASK */
 305     {
 306         if( p_sys->p_thread->rtmp_headers_recv[i].body != NULL )
 307         {
 308             free( p_sys->p_thread->rtmp_headers_recv[i].body->body );
 309             free( p_sys->p_thread->rtmp_headers_recv[i].body );
 310         }
 311     }
 312
 313     net_Close( p_sys->p_thread->fd );
 314
 315     var_Destroy( p_access, "rtmp-caching" );
 316
 317     vlc_UrlClean( &p_sys->p_thread->url );
 318     free( p_sys->p_thread->psz_application );
 319     free( p_sys->p_thread->psz_media );
 320     free( p_sys->p_thread->psz_swf_url );
 321     free( p_sys->p_thread->psz_page_url );
 322
 323     vlc_object_detach( p_sys->p_thread );
 324     vlc_object_release( p_sys->p_thread );
 325     free( p_sys );
 326 }
 327
 328 /*****************************************************************************
 329  * Read: standard read on a file descriptor.
 330  *****************************************************************************/
 331 static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len )
 332 {
 333     access_sys_t *p_sys = p_access->p_sys;
 334     rtmp_packet_t *rtmp_packet;
 335     uint8_t *tmp_buffer;
 336     ssize_t i_ret;
 337     size_t i_len_tmp;
 338
 339     i_len_tmp = 0;
 340
 341     while( i_len_tmp < i_len )
 342     {
 343         if( p_sys->p_thread->result_stop || p_access->info.b_eof || !vlc_object_alive (p_access) )
 344         {
 345             p_access->info.b_eof = true;
 346             return 0;
 347         }
 348
 349         if( p_sys->read_packet )
 350         {
 351             if( !p_sys->p_thread->metadata_received )
 352             {
 353                 /* Wait until enough data is received for extracting metadata */
 354 #warning This is not thread-safe (because block_FifoCount() is not)!
 355                 if( block_FifoCount( p_sys->p_thread->p_fifo_input ) < 10 )
 356                 {
 357 #warning This is wrong!
 358                     msleep(100000);
 359                     continue;
 360                 }
 361
 362                 p_sys->flv_packet = flv_get_metadata( p_access );
 363
 364                 p_sys->p_thread->metadata_received = 1;
 365             }
 366             else
 367             {
 368                 p_sys->flv_packet = block_FifoGet( p_sys->p_thread->p_fifo_input );
 369                 if( p_sys->flv_packet == NULL )
 370                     continue; /* Forced wake-up */
 371             }
 372
 373             if( p_sys->p_thread->first_media_packet )
 374             {
 375                 p_sys->flv_packet = flv_insert_header( p_access, p_sys->flv_packet );
 376
 377                 p_sys->p_thread->first_media_packet = 0;
 378             }
 379         }
 380         if( i_len - i_len_tmp >= p_sys->flv_packet->i_buffer )
 381         {
 382             p_sys->read_packet = 1;
 383
 384             memcpy( p_buffer + i_len_tmp, p_sys->flv_packet->p_buffer, p_sys->flv_packet->i_buffer );
 385             block_FifoPut( p_sys->p_thread->p_empty_blocks, p_sys->flv_packet );
 386
 387             i_len_tmp += p_sys->flv_packet->i_buffer;
 388         }
 389         else
 390         {
 391             p_sys->read_packet = 0;
 392
 393             memcpy( p_buffer + i_len_tmp, p_sys->flv_packet->p_buffer, i_len - i_len_tmp);
 394             p_sys->flv_packet->i_buffer -= i_len - i_len_tmp;
 395             memmove( p_sys->flv_packet->p_buffer, p_sys->flv_packet->p_buffer + i_len - i_len_tmp, p_sys->flv_packet->i_buffer );
 396
 397             i_len_tmp += i_len - i_len_tmp;
 398         }
 399     }
 400     if( i_len_tmp > 0 )
 401     {
 402         if( p_sys->p_thread->result_publish )
 403         {
 404             /* Send publish onStatus event only once */
 405             p_sys->p_thread->result_publish = 0;
 406
 407             rtmp_packet = rtmp_build_publish_start( p_sys->p_thread );
 408
 409             tmp_buffer = rtmp_encode_packet( p_sys->p_thread, rtmp_packet );
 410
 411             i_ret = net_Write( p_sys->p_thread, p_sys->p_thread->fd, NULL, tmp_buffer, rtmp_packet->length_encoded );
 412             free( rtmp_packet->body->body );
 413             free( rtmp_packet->body );
 414             free( rtmp_packet );
 415             free( tmp_buffer );
 416             if( i_ret != rtmp_packet->length_encoded )
 417             {
 418                 msg_Err( p_access, "failed send publish start" );
 419                 return -1;
 420             }
 421         }
 422
 423         p_access->info.i_pos += i_len_tmp;
 424
 425         rtmp_packet = rtmp_build_bytes_read( p_sys->p_thread, p_access->info.i_pos );
 426
 427         tmp_buffer = rtmp_encode_packet( p_sys->p_thread, rtmp_packet );
 428
 429         i_ret = net_Write( p_sys->p_thread, p_sys->p_thread->fd, NULL, tmp_buffer, rtmp_packet->length_encoded );
 430         free( rtmp_packet->body->body );
 431         free( rtmp_packet->body );
 432         free( rtmp_packet );
 433         free( tmp_buffer );
 434
 435         if( i_ret != rtmp_packet->length_encoded )
 436         {
 437             msg_Err( p_access, "failed send bytes read" );
 438             return -1;
 439         }
 440     }
 441
 442     return i_len_tmp;
 443 }
 444
 445 /*****************************************************************************
 446  * Seek: seek to a specific location in a file
 447  *****************************************************************************/
 448 static int Seek( access_t *p_access, int64_t i_pos )
 449 {
 450     VLC_UNUSED( p_access );
 451     VLC_UNUSED( i_pos );
 452 /*msg_Warn ( p_access, "Seek to %lld", i_pos);
 453     switch( rtmp_seek( p_access, i_pos ) )
 454     {
 455         case -1:
 456             return VLC_EGENERIC;
 457         case 0:
 458             break;
 459         default:
 460             msg_Err( p_access, "You should not be here" );
 461             abort();
 462     }
 463 */
 464     return VLC_EGENERIC;
 465 }
 466
 467 /*****************************************************************************
 468  * Control:
 469  *****************************************************************************/
 470 static int Control( access_t *p_access, int i_query, va_list args )
 471 {
 472     bool    *pb_bool;
 473     int64_t *pi_64;
 474
 475     switch( i_query )
 476     {
 477         /* */
 478         case ACCESS_CAN_SEEK:
 479         case ACCESS_CAN_FASTSEEK:
 480             pb_bool = (bool*) va_arg( args, bool* );
 481             *pb_bool = false; /* TODO */
 482             break;
 483
 484         case ACCESS_CAN_PAUSE:
 485             pb_bool = (bool*) va_arg( args, bool* );
 486             *pb_bool = false; /* TODO */
 487             break;
 488
 489         case ACCESS_CAN_CONTROL_PACE:
 490             pb_bool = (bool*) va_arg( args, bool* );
 491             *pb_bool = true;
 492             break;
 493
 494         /* */
 495         case ACCESS_GET_PTS_DELAY:
 496             pi_64 = (int64_t*) va_arg( args, int64_t * );
 497             *pi_64 = var_GetInteger( p_access, "rtmp-caching" ) * INT64_C(1000);
 498             break;
 499
 500         /* */
 501         case ACCESS_SET_PAUSE_STATE:
 502             /* Nothing to do */
 503             break;
 504
 505         case ACCESS_GET_TITLE_INFO:
 506         case ACCESS_SET_TITLE:
 507         case ACCESS_SET_SEEKPOINT:
 508         case ACCESS_SET_PRIVATE_ID_STATE:
 509         case ACCESS_GET_META:
 510         case ACCESS_GET_CONTENT_TYPE: /* DOWN: comment this line */
 511             return VLC_EGENERIC;
 512
 513         default:
 514             msg_Warn( p_access, "unimplemented query in control" );
 515             return VLC_EGENERIC;
 516     }
 517
 518     return VLC_SUCCESS;
 519 }
 520
 521 /*****************************************************************************
 522  * ThreadControl: manage control messages and pipe media to Read
 523  *****************************************************************************/
 524 static void* ThreadControl( vlc_object_t *p_this )
 525 {
 526     rtmp_control_thread_t *p_thread = (rtmp_control_thread_t *) p_this;
 527     rtmp_packet_t *rtmp_packet;
 528     int canc = vlc_savecancel ();
 529
 530     rtmp_init_handler( p_thread->rtmp_handler );
 531
 532     while( vlc_object_alive (p_thread) )
 533     {
 534         rtmp_packet = rtmp_read_net_packet( p_thread );
 535         if( rtmp_packet != NULL )
 536         {
 537             if( rtmp_packet->content_type < 0x01 /* RTMP_CONTENT_TYPE_CHUNK_SIZE */
 538                 || rtmp_packet->content_type > 0x14 ) /* RTMP_CONTENT_TYPE_INVOKE */
 539             {
 540                 free( rtmp_packet->body->body );
 541                 free( rtmp_packet->body );
 542                 free( rtmp_packet );
 543
 544                 msg_Warn( p_thread, "unknown content type received" );
 545             }
 546             else
 547                 p_thread->rtmp_handler[rtmp_packet->content_type]( p_thread, rtmp_packet );
 548         }
 549         else
 550         {
 551             /* Sometimes server close connection too soon */
 552             if( p_thread->result_connect )
 553             {
 554 #warning There must be a bug here!
 555                 vlc_mutex_lock( &p_thread->lock );
 556                 vlc_cond_signal( &p_thread->wait );
 557                 vlc_mutex_unlock( &p_thread->lock );
 558             }
 559
 560             p_thread->b_die = 1;
 561             ((access_t *) p_thread->p_base_object)->info.b_eof = true;
 562
 563             block_FifoWake( p_thread->p_fifo_input );
 564         }
 565     }
 566     vlc_restorecancel (canc);
 567     return NULL;
 568 }