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     block_FifoRelease( p_sys->p_thread->p_fifo_input );
 243     block_FifoRelease( p_sys->p_thread->p_empty_blocks );
 244
 245     free( p_sys->p_thread->psz_application );
 246     free( p_sys->p_thread->psz_media );
 247
 248     net_Close( p_sys->p_thread->fd );
 249 error:
 250     vlc_UrlClean( &p_sys->p_thread->url );
 251
 252     vlc_object_detach( p_sys->p_thread );
 253     vlc_object_release( p_sys->p_thread );
 254
 255     free( p_sys );
 256
 257     return VLC_EGENERIC;
 258 }
 259
 260 /*****************************************************************************
 261  * Close: close the rtmp connection
 262  *****************************************************************************/
 263 static void Close( vlc_object_t * p_this )
 264 {
 265     access_t     *p_access = (access_t *) p_this;
 266     access_sys_t *p_sys = p_access->p_sys;
 267     int i;
 268
 269 /*    p_sys->p_thread->b_die = true;*/
 270     vlc_object_kill( p_sys->p_thread );
 271     block_FifoWake( p_sys->p_thread->p_fifo_input );
 272
 273     vlc_thread_join( p_sys->p_thread );
 274
 275     vlc_cond_destroy( &p_sys->p_thread->wait );
 276     vlc_mutex_destroy( &p_sys->p_thread->lock );
 277
 278     block_FifoRelease( p_sys->p_thread->p_fifo_input );
 279     block_FifoRelease( p_sys->p_thread->p_empty_blocks );
 280
 281     for( i = 0; i < 64; i++ ) /* RTMP_HEADER_STREAM_INDEX_MASK */
 282     {
 283         if( p_sys->p_thread->rtmp_headers_recv[i].body != NULL )
 284         {
 285             free( p_sys->p_thread->rtmp_headers_recv[i].body->body );
 286             free( p_sys->p_thread->rtmp_headers_recv[i].body );
 287         }
 288     }
 289
 290     net_Close( p_sys->p_thread->fd );
 291
 292     var_Destroy( p_access, "rtmp-caching" );
 293
 294     vlc_UrlClean( &p_sys->p_thread->url );
 295     free( p_sys->p_thread->psz_application );
 296     free( p_sys->p_thread->psz_media );
 297
 298     vlc_object_detach( p_sys->p_thread );
 299     vlc_object_release( p_sys->p_thread );
 300     free( p_sys );
 301 }
 302
 303 /*****************************************************************************
 304  * Read: standard read on a file descriptor.
 305  *****************************************************************************/
 306 static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len )
 307 {
 308     access_sys_t *p_sys = p_access->p_sys;
 309     rtmp_packet_t *rtmp_packet;
 310     uint8_t *tmp_buffer;
 311     ssize_t i_ret;
 312     size_t i_len_tmp;
 313
 314     i_len_tmp = 0;
 315
 316     while( i_len_tmp < i_len )
 317     {
 318         if( p_sys->p_thread->result_stop || p_access->info.b_eof || !vlc_object_alive (p_access) )
 319         {
 320             p_access->info.b_eof = true;
 321             return 0;
 322         }
 323
 324         if( p_sys->read_packet )
 325         {
 326             if( !p_sys->p_thread->metadata_received )
 327             {
 328                 /* Wait until enough data is received for extracting metadata */
 329                 if( block_FifoCount( p_sys->p_thread->p_fifo_input ) < 10 )
 330                 {
 331                     msleep(100000);
 332                     continue;
 333                 }
 334
 335                 p_sys->flv_packet = flv_get_metadata( p_access );
 336
 337                 p_sys->p_thread->metadata_received = 1;
 338             }
 339             else
 340             {
 341                 p_sys->flv_packet = block_FifoGet( p_sys->p_thread->p_fifo_input );
 342                 if( p_sys->flv_packet == NULL )
 343                     continue; /* Forced wake-up */
 344             }
 345
 346             if( p_sys->p_thread->first_media_packet )
 347             {
 348                 p_sys->flv_packet = flv_insert_header( p_access, p_sys->flv_packet );
 349
 350                 p_sys->p_thread->first_media_packet = 0;
 351             }
 352         }
 353         if( i_len - i_len_tmp >= p_sys->flv_packet->i_buffer )
 354         {
 355             p_sys->read_packet = 1;
 356
 357             memcpy( p_buffer + i_len_tmp, p_sys->flv_packet->p_buffer, p_sys->flv_packet->i_buffer );
 358             block_FifoPut( p_sys->p_thread->p_empty_blocks, p_sys->flv_packet );
 359
 360             i_len_tmp += p_sys->flv_packet->i_buffer;
 361         }
 362         else
 363         {
 364             p_sys->read_packet = 0;
 365
 366             memcpy( p_buffer + i_len_tmp, p_sys->flv_packet->p_buffer, i_len - i_len_tmp);
 367             p_sys->flv_packet->i_buffer -= i_len - i_len_tmp;
 368             memmove( p_sys->flv_packet->p_buffer, p_sys->flv_packet->p_buffer + i_len - i_len_tmp, p_sys->flv_packet->i_buffer );
 369
 370             i_len_tmp += i_len - i_len_tmp;
 371         }
 372     }
 373     if( i_len_tmp > 0 )
 374     {
 375         if( p_sys->p_thread->result_publish )
 376         {
 377             /* Send publish onStatus event only once */
 378             p_sys->p_thread->result_publish = 0;
 379
 380             rtmp_packet = rtmp_build_publish_start( p_sys->p_thread );
 381
 382             tmp_buffer = rtmp_encode_packet( p_sys->p_thread, rtmp_packet );
 383
 384             i_ret = net_Write( p_sys->p_thread, p_sys->p_thread->fd, NULL, tmp_buffer, rtmp_packet->length_encoded );
 385             if( i_ret != rtmp_packet->length_encoded )
 386             {
 387                 free( rtmp_packet->body->body );
 388                 free( rtmp_packet->body );
 389                 free( rtmp_packet );
 390                 free( tmp_buffer );
 391                 msg_Err( p_access, "failed send publish start" );
 392                 return -1;
 393             }
 394             free( rtmp_packet->body->body );
 395             free( rtmp_packet->body );
 396             free( rtmp_packet );
 397             free( tmp_buffer );
 398         }
 399
 400         p_access->info.i_pos += i_len_tmp;
 401
 402         rtmp_packet = rtmp_build_bytes_read( p_sys->p_thread, p_access->info.i_pos );
 403
 404         tmp_buffer = rtmp_encode_packet( p_sys->p_thread, rtmp_packet );
 405
 406         i_ret = net_Write( p_sys->p_thread, p_sys->p_thread->fd, NULL, tmp_buffer, rtmp_packet->length_encoded );
 407         if( i_ret != rtmp_packet->length_encoded )
 408         {
 409             free( rtmp_packet->body->body );
 410             free( rtmp_packet->body );
 411             free( rtmp_packet );
 412             free( tmp_buffer );
 413             msg_Err( p_access, "failed send bytes read" );
 414             return -1;
 415         }
 416         free( rtmp_packet->body->body );
 417         free( rtmp_packet->body );
 418         free( rtmp_packet );
 419         free( tmp_buffer );
 420     }
 421
 422     return i_len_tmp;
 423 }
 424
 425 /*****************************************************************************
 426  * Seek: seek to a specific location in a file
 427  *****************************************************************************/
 428 static int Seek( access_t *p_access, int64_t i_pos )
 429 {
 430     VLC_UNUSED( p_access );
 431     VLC_UNUSED( i_pos );
 432 /*msg_Warn ( p_access, "Seek to %lld", i_pos);
 433     switch( rtmp_seek( p_access, i_pos ) )
 434     {
 435         case -1:
 436             return VLC_EGENERIC;
 437         case 0:
 438             break;
 439         default:
 440             msg_Err( p_access, "You should not be here" );
 441             abort();
 442     }
 443 */
 444     return VLC_EGENERIC;
 445 }
 446
 447 /*****************************************************************************
 448  * Control:
 449  *****************************************************************************/
 450 static int Control( access_t *p_access, int i_query, va_list args )
 451 {
 452     bool    *pb_bool;
 453     int64_t *pi_64;
 454
 455     switch( i_query )
 456     {
 457         /* */
 458         case ACCESS_CAN_SEEK:
 459         case ACCESS_CAN_FASTSEEK:
 460             pb_bool = (bool*) va_arg( args, bool* );
 461             *pb_bool = false; /* TODO */
 462             break;
 463
 464         case ACCESS_CAN_PAUSE:
 465             pb_bool = (bool*) va_arg( args, bool* );
 466             *pb_bool = false; /* TODO */
 467             break;
 468
 469         case ACCESS_CAN_CONTROL_PACE:
 470             pb_bool = (bool*) va_arg( args, bool* );
 471             *pb_bool = true;
 472             break;
 473
 474         /* */
 475         case ACCESS_GET_PTS_DELAY:
 476             pi_64 = (int64_t*) va_arg( args, int64_t * );
 477             *pi_64 = var_GetInteger( p_access, "rtmp-caching" ) * INT64_C(1000);
 478             break;
 479
 480         /* */
 481         case ACCESS_SET_PAUSE_STATE:
 482             /* Nothing to do */
 483             break;
 484
 485         case ACCESS_GET_TITLE_INFO:
 486         case ACCESS_SET_TITLE:
 487         case ACCESS_SET_SEEKPOINT:
 488         case ACCESS_SET_PRIVATE_ID_STATE:
 489         case ACCESS_GET_META:
 490         case ACCESS_GET_CONTENT_TYPE: /* DOWN: comment this line */
 491             return VLC_EGENERIC;
 492
 493         default:
 494             msg_Warn( p_access, "unimplemented query in control" );
 495             return VLC_EGENERIC;
 496     }
 497
 498     return VLC_SUCCESS;
 499 }
 500
 501 /*****************************************************************************
 502  * ThreadControl: manage control messages and pipe media to Read
 503  *****************************************************************************/
 504 static void* ThreadControl( vlc_object_t *p_this )
 505 {
 506     rtmp_control_thread_t *p_thread = (rtmp_control_thread_t *) p_this;
 507     rtmp_packet_t *rtmp_packet;
 508     int canc = vlc_savecancel ();
 509
 510     rtmp_init_handler( p_thread->rtmp_handler );
 511
 512     while( vlc_object_alive (p_thread) )
 513     {
 514         rtmp_packet = rtmp_read_net_packet( p_thread );
 515         if( rtmp_packet != NULL )
 516         {
 517             if( rtmp_packet->content_type < 0x01 /* RTMP_CONTENT_TYPE_CHUNK_SIZE */
 518                 || rtmp_packet->content_type > 0x14 ) /* RTMP_CONTENT_TYPE_INVOKE */
 519             {
 520                 free( rtmp_packet->body->body );
 521                 free( rtmp_packet->body );
 522                 free( rtmp_packet );
 523
 524                 msg_Warn( p_thread, "unknown content type received" );
 525             }
 526             else
 527                 p_thread->rtmp_handler[rtmp_packet->content_type]( p_thread, rtmp_packet );
 528         }
 529         else
 530         {
 531             /* Sometimes server close connection too soon */
 532             if( p_thread->result_connect )
 533             {
 534                 vlc_mutex_lock( &p_thread->lock );
 535                 vlc_cond_signal( &p_thread->wait );
 536                 vlc_mutex_unlock( &p_thread->lock );
 537             }
 538
 539             p_thread->b_die = 1;
 540             ((access_t *) p_thread->p_base_object)->info.b_eof = true;
 541
 542             block_FifoWake( p_thread->p_fifo_input );
 543         }
 544     }
 545     vlc_restorecancel (canc);
 546     return NULL;
 547 }