modules/access_output/rtmp.c

   1 /*****************************************************************************
   2  * rtmp.c: RTMP output.
   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_sout.h>
  33
  34 #include <vlc_network.h> /* DOWN: #include <network.h> */
  35 #include <vlc_url.h>
  36 #include <vlc_block.h>
  37
  38 #include "../access/rtmp/rtmp_amf_flv.h"
  39
  40 /*****************************************************************************
  41  * Module descriptor
  42  *****************************************************************************/
  43
  44 #define RTMP_CONNECT_TEXT N_( "Active TCP connection" )
  45 #define RTMP_CONNECT_LONGTEXT N_( \
  46     "If enabled, VLC will connect to a remote destination instead of " \
  47     "waiting for an incoming connection." )
  48
  49 static int  Open ( vlc_object_t * );
  50 static void Close( vlc_object_t * );
  51
  52 #define SOUT_CFG_PREFIX "sout-rtmp-"
  53
  54 vlc_module_begin ()
  55     set_description( N_("RTMP stream output") )
  56     set_shortname( N_("RTMP" ) )
  57     set_capability( "sout access", 0 )
  58     set_category( CAT_SOUT )
  59     set_subcategory( SUBCAT_SOUT_STREAM )
  60     add_shortcut( "rtmp" )
  61     set_callbacks( Open, Close )
  62     add_bool( "rtmp-connect", false, NULL, RTMP_CONNECT_TEXT,
  63               RTMP_CONNECT_LONGTEXT, false )
  64 vlc_module_end ()
  65
  66 /*****************************************************************************
  67  * Local prototypes
  68  *****************************************************************************/
  69 static ssize_t Write( sout_access_out_t *, block_t * );
  70 static int     Seek ( sout_access_out_t *, off_t  );
  71 static void* ThreadControl( void * );
  72
  73 struct sout_access_out_sys_t
  74 {
  75     int active;
  76
  77     /* thread for filtering and handling control messages */
  78     rtmp_control_thread_t *p_thread;
  79 };
  80
  81 /*****************************************************************************
  82  * Open: open the rtmp connection
  83  *****************************************************************************/
  84 static int Open( vlc_object_t *p_this )
  85 {
  86     sout_access_out_t *p_access = (sout_access_out_t *) p_this;
  87     sout_access_out_sys_t *p_sys;
  88     char *psz, *p;
  89     int length_path, length_media_name;
  90     int i;
  91
  92     if( !( p_sys = calloc ( 1, sizeof( sout_access_out_sys_t ) ) ) )
  93         return VLC_ENOMEM;
  94     p_access->p_sys = p_sys;
  95
  96     p_sys->p_thread =
  97         vlc_object_create( p_access, sizeof( rtmp_control_thread_t ) );
  98     if( !p_sys->p_thread )
  99     {
 100         free( p_sys );
 101         return VLC_ENOMEM;
 102     }
 103     vlc_object_attach( p_sys->p_thread, p_access );
 104
 105     /* Parse URI - remove spaces */
 106     p = psz = strdup( p_access->psz_path );
 107     while( ( p = strchr( p, ' ' ) ) != NULL )
 108         *p = '+';
 109     vlc_UrlParse( &p_sys->p_thread->url, psz, 0 );
 110     free( psz );
 111
 112     if( p_sys->p_thread->url.psz_host == NULL
 113         || *p_sys->p_thread->url.psz_host == '\0' )
 114     {
 115          msg_Warn( p_access, "invalid host" );
 116          goto error;
 117     }
 118
 119     if( p_sys->p_thread->url.i_port <= 0 )
 120         p_sys->p_thread->url.i_port = 1935;
 121
 122     if ( p_sys->p_thread->url.psz_path == NULL )
 123     {
 124         msg_Warn( p_access, "invalid path" );
 125         goto error;
 126     }
 127
 128     length_path = strlen( p_sys->p_thread->url.psz_path );
 129     char* psz_tmp = strrchr( p_sys->p_thread->url.psz_path, '/' );
 130     if( !psz_tmp )
 131         goto error;
 132     length_media_name = strlen( psz_tmp ) - 1;
 133
 134     p_sys->p_thread->psz_application = strndup( p_sys->p_thread->url.psz_path + 1, length_path - length_media_name - 2 );
 135     p_sys->p_thread->psz_media = strdup( p_sys->p_thread->url.psz_path + ( length_path - length_media_name ) );
 136
 137     msg_Dbg( p_access, "rtmp: host='%s' port=%d path='%s'",
 138              p_sys->p_thread->url.psz_host, p_sys->p_thread->url.i_port, p_sys->p_thread->url.psz_path );
 139
 140     if( p_sys->p_thread->url.psz_username && *p_sys->p_thread->url.psz_username )
 141     {
 142         msg_Dbg( p_access, "      user='%s'", p_sys->p_thread->url.psz_username );
 143     }
 144
 145     /* Initialize thread variables */
 146     p_sys->p_thread->b_error= 0;
 147     p_sys->p_thread->p_fifo_input = block_FifoNew();
 148     p_sys->p_thread->p_empty_blocks = block_FifoNew();
 149     p_sys->p_thread->has_audio = 0;
 150     p_sys->p_thread->has_video = 0;
 151     p_sys->p_thread->metadata_received = 0;
 152     p_sys->p_thread->first_media_packet = 1;
 153     p_sys->p_thread->flv_tag_previous_tag_size = 0x00000000; /* FLV_TAG_FIRST_PREVIOUS_TAG_SIZE */
 154
 155     p_sys->p_thread->flv_body = rtmp_body_new( -1 );
 156     p_sys->p_thread->flv_length_body = 0;
 157
 158     p_sys->p_thread->chunk_size_recv = 128; /* RTMP_DEFAULT_CHUNK_SIZE */
 159     p_sys->p_thread->chunk_size_send = 128; /* RTMP_DEFAULT_CHUNK_SIZE */
 160     for(i = 0; i < 64; i++)
 161     {
 162         memset( &p_sys->p_thread->rtmp_headers_recv[i], 0, sizeof( rtmp_packet_t ) );
 163         p_sys->p_thread->rtmp_headers_send[i].length_header = -1;
 164         p_sys->p_thread->rtmp_headers_send[i].stream_index = -1;
 165         p_sys->p_thread->rtmp_headers_send[i].timestamp = -1;
 166         p_sys->p_thread->rtmp_headers_send[i].timestamp_relative = -1;
 167         p_sys->p_thread->rtmp_headers_send[i].length_encoded = -1;
 168         p_sys->p_thread->rtmp_headers_send[i].length_body = -1;
 169         p_sys->p_thread->rtmp_headers_send[i].content_type = -1;
 170         p_sys->p_thread->rtmp_headers_send[i].src_dst = -1;
 171         p_sys->p_thread->rtmp_headers_send[i].body = NULL;
 172     }
 173
 174     vlc_cond_init( &p_sys->p_thread->wait );
 175     vlc_mutex_init( &p_sys->p_thread->lock );
 176
 177     p_sys->p_thread->result_connect = 1;
 178     /* p_sys->p_thread->result_publish = only used on access */
 179     p_sys->p_thread->result_play = 1;
 180     p_sys->p_thread->result_stop = 0;
 181     p_sys->p_thread->fd = -1;
 182
 183     /* Open connection */
 184     if( var_CreateGetBool( p_access, "rtmp-connect" ) > 0 )
 185     {
 186 #if 0
 187         p_sys->p_thread->fd = net_ConnectTCP( p_access,
 188                                               p_sys->p_thread->url.psz_host,
 189                                               p_sys->p_thread->url.i_port );
 190 #endif
 191         msg_Err( p_access, "to be implemented" );
 192         goto error2;
 193     }
 194     else
 195     {
 196         int *p_fd_listen;
 197
 198         p_sys->active = 0;
 199         p_fd_listen = net_ListenTCP( p_access, p_sys->p_thread->url.psz_host,
 200                                      p_sys->p_thread->url.i_port );
 201         if( p_fd_listen == NULL )
 202         {
 203             msg_Warn( p_access, "cannot listen to %s port %i",
 204                       p_sys->p_thread->url.psz_host,
 205                       p_sys->p_thread->url.i_port );
 206             goto error2;
 207         }
 208
 209         do
 210             p_sys->p_thread->fd = net_Accept( p_access, p_fd_listen );
 211         while( p_sys->p_thread->fd == -1 );
 212         net_ListenClose( p_fd_listen );
 213
 214         if( rtmp_handshake_passive( p_this, p_sys->p_thread->fd ) < 0 )
 215         {
 216             msg_Err( p_access, "handshake passive failed");
 217             goto error2;
 218         }
 219     }
 220
 221     if( vlc_clone( &p_sys->p_thread->thread, ThreadControl, p_sys->p_thread,
 222                    VLC_THREAD_PRIORITY_INPUT ) )
 223     {
 224         msg_Err( p_access, "cannot spawn rtmp control thread" );
 225         goto error2;
 226     }
 227
 228     if( !p_sys->active )
 229     {
 230         if( rtmp_connect_passive( p_sys->p_thread ) < 0 )
 231         {
 232             msg_Err( p_access, "connect passive failed");
 233             vlc_cancel( p_sys->p_thread->thread );
 234             vlc_join( p_sys->p_thread->thread, NULL );
 235             goto error2;
 236         }
 237     }
 238
 239     p_access->pf_write = Write;
 240     p_access->pf_seek = Seek;
 241
 242     return VLC_SUCCESS;
 243
 244 error2:
 245     vlc_cond_destroy( &p_sys->p_thread->wait );
 246     vlc_mutex_destroy( &p_sys->p_thread->lock );
 247
 248     free( p_sys->p_thread->psz_application );
 249     free( p_sys->p_thread->psz_media );
 250
 251     if( p_sys->p_thread->fd != -1 )
 252         net_Close( p_sys->p_thread->fd );
 253 error:
 254     vlc_UrlClean( &p_sys->p_thread->url );
 255     vlc_object_release( p_sys->p_thread );
 256     free( p_sys );
 257
 258     return VLC_EGENERIC;
 259 }
 260
 261 /*****************************************************************************
 262  * Close: close the target
 263  *****************************************************************************/
 264 static void Close( vlc_object_t * p_this )
 265 {
 266     sout_access_out_t *p_access = (sout_access_out_t *) p_this;
 267     sout_access_out_sys_t *p_sys = p_access->p_sys;
 268     int i;
 269
 270     vlc_cancel( p_sys->p_thread->thread );
 271     vlc_join( p_sys->p_thread->thread, NULL );
 272
 273     vlc_cond_destroy( &p_sys->p_thread->wait );
 274     vlc_mutex_destroy( &p_sys->p_thread->lock );
 275
 276     block_FifoRelease( p_sys->p_thread->p_fifo_input );
 277     block_FifoRelease( p_sys->p_thread->p_empty_blocks );
 278
 279     for( i = 0; i < 64; i++ ) /* RTMP_HEADER_STREAM_INDEX_MASK */
 280     {
 281         if( p_sys->p_thread->rtmp_headers_recv[i].body != NULL )
 282         {
 283             free( p_sys->p_thread->rtmp_headers_recv[i].body->body );
 284             free( p_sys->p_thread->rtmp_headers_recv[i].body );
 285         }
 286     }
 287
 288     net_Close( p_sys->p_thread->fd );
 289
 290     vlc_object_release( p_sys->p_thread );
 291
 292     vlc_UrlClean( &p_sys->p_thread->url );
 293     free( p_sys->p_thread->psz_application );
 294     free( p_sys->p_thread->psz_media );
 295     free( p_sys );
 296 }
 297
 298 /*****************************************************************************
 299  * Write: standard write on a file descriptor.
 300  *****************************************************************************/
 301 static ssize_t Write( sout_access_out_t *p_access, block_t *p_buffer )
 302 {
 303     rtmp_packet_t *rtmp_packet;
 304     uint8_t *tmp_buffer;
 305     ssize_t i_ret;
 306     ssize_t i_write = 0;
 307
 308     if( p_access->p_sys->p_thread->first_media_packet )
 309     {
 310         /* 13 == FLV_HEADER_SIZE + PreviousTagSize*/
 311         memmove( p_buffer->p_buffer, p_buffer->p_buffer + 13, p_buffer->i_buffer - 13 );
 312         p_buffer = block_Realloc( p_buffer, 0, p_buffer->i_buffer - 13 );
 313
 314         p_access->p_sys->p_thread->first_media_packet = 0;
 315     }
 316
 317     while( p_buffer )
 318     {
 319         block_t *p_next = p_buffer->p_next;
 320 //////////////////////////////
 321 /*msg_Warn(p_access, "XXXXXXXXXXXXXXXXX");
 322 int i;
 323 for(i = 0; i < p_buffer->i_buffer; i += 16)
 324 {
 325     msg_Warn(p_access,"%.2x%.2x %.2x%.2x %.2x%.2x %.2x%.2x %.2x%.2x %.2x%.2x %.2x%.2x %.2x%.2x",
 326 p_buffer->p_buffer[i], p_buffer->p_buffer[i+1], p_buffer->p_buffer[i+2], p_buffer->p_buffer[i+3], p_buffer->p_buffer[i+4], p_buffer->p_buffer[i+5], p_buffer->p_buffer[i+6], p_buffer->p_buffer[i+7],
 327 p_buffer->p_buffer[i+8], p_buffer->p_buffer[i+9], p_buffer->p_buffer[i+10], p_buffer->p_buffer[i+11], p_buffer->p_buffer[i+12], p_buffer->p_buffer[i+13], p_buffer->p_buffer[i+14], p_buffer->p_buffer[i+15]);
 328 }*/
 329 ////////////////////////
 330         msg_Warn(p_access, "rtmp.c:360 i_dts %"PRIu64" i_pts %"PRIu64,
 331                  p_buffer->i_dts, p_buffer->i_pts);
 332         rtmp_packet = rtmp_build_flv_over_rtmp( p_access->p_sys->p_thread, p_buffer );
 333
 334         if( rtmp_packet )
 335         {
 336             tmp_buffer = rtmp_encode_packet( p_access->p_sys->p_thread, rtmp_packet );
 337
 338             i_ret = net_Write( p_access->p_sys->p_thread, p_access->p_sys->p_thread->fd, NULL, tmp_buffer, rtmp_packet->length_encoded );
 339             if( i_ret != rtmp_packet->length_encoded )
 340             {
 341                 free( rtmp_packet->body->body );
 342                 free( rtmp_packet->body );
 343                 free( rtmp_packet );
 344                 free( tmp_buffer );
 345                 msg_Err( p_access->p_sys->p_thread, "failed send flv packet" );
 346                 return -1;
 347             }
 348             free( rtmp_packet->body->body );
 349             free( rtmp_packet->body );
 350             free( rtmp_packet );
 351             free( tmp_buffer );
 352         }
 353
 354         i_write += p_buffer->i_buffer;
 355
 356         p_buffer = p_next;
 357     }
 358
 359     return i_write;
 360 }
 361
 362 /********************a*********************************************************
 363  * Seek: seek to a specific location in a file
 364  *****************************************************************************/
 365 static int Seek( sout_access_out_t *p_access, off_t i_pos )
 366 {
 367     (void)i_pos;
 368     msg_Err( p_access, "RTMP sout access cannot seek" );
 369     return -1;
 370 }
 371
 372 /*****************************************************************************
 373  * ThreadControl: manage control messages and pipe media to Read
 374  *****************************************************************************/
 375 static void* ThreadControl( void *p_this )
 376 {
 377     rtmp_control_thread_t *p_thread = p_this;
 378     rtmp_packet_t *rtmp_packet;
 379     int canc = vlc_savecancel ();
 380
 381     rtmp_init_handler( p_thread->rtmp_handler );
 382
 383     for( ;; )
 384     {
 385         vlc_restorecancel( canc );
 386         rtmp_packet = rtmp_read_net_packet( p_thread );
 387         canc = vlc_savecancel( );
 388         if( rtmp_packet != NULL )
 389         {
 390             if( rtmp_packet->content_type < 0x01 /* RTMP_CONTENT_TYPE_CHUNK_SIZE */
 391                 || rtmp_packet->content_type > 0x14 ) /* RTMP_CONTENT_TYPE_INVOKE */
 392             {
 393                 free( rtmp_packet->body->body );
 394                 free( rtmp_packet->body );
 395                 free( rtmp_packet );
 396
 397                 msg_Warn( p_thread, "unknown content type received" );
 398             }
 399             else
 400                 p_thread->rtmp_handler[rtmp_packet->content_type]( p_thread, rtmp_packet );
 401         }
 402         else
 403         {
 404             /* Sometimes server close connection too soon */
 405 #warning Locking bug here.
 406             if( p_thread->result_connect )
 407             {
 408                 vlc_mutex_lock( &p_thread->lock );
 409                 vlc_cond_signal( &p_thread->wait );
 410                 vlc_mutex_unlock( &p_thread->lock );
 411             }
 412             break;
 413         }
 414     }
 415     vlc_restorecancel (canc);
 416     return NULL;
 417 }