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