sjero.net Git - linphone/blob - linphone/mediastreamer2/src/videostream.c

   1 /*
   2 mediastreamer2 library - modular sound and video processing and streaming
   3 Copyright (C) 2006  Simon MORLAT (simon.morlat@linphone.org)
   4
   5 This program is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU General Public License
   7 as published by the Free Software Foundation; either version 2
   8 of the License, or (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18 */
  19
  20 #include "mediastreamer2/mediastream.h"
  21 #include "mediastreamer2/msfilter.h"
  22 #include "mediastreamer2/msvideo.h"
  23 #include "mediastreamer2/msrtp.h"
  24 #include "mediastreamer2/msvideoout.h"
  25
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include "mediastreamer-config.h"
  29 #endif
  30
  31 extern RtpSession * create_duplex_rtpsession( int locport, bool_t ipv6);
  32
  33 #define MAX_RTP_SIZE    UDP_MAX_SIZE
  34
  35 /* this code is not part of the library itself, it is part of the mediastream program */
  36 void video_stream_free (VideoStream * stream)
  37 {
  38         if (stream->session!=NULL){
  39                 rtp_session_unregister_event_queue(stream->session,stream->evq);
  40                 rtp_session_destroy(stream->session);
  41         }
  42         if (stream->rtprecv != NULL)
  43                 ms_filter_destroy (stream->rtprecv);
  44         if (stream->rtpsend!=NULL)
  45                 ms_filter_destroy (stream->rtpsend);
  46         if (stream->source != NULL)
  47                 ms_filter_destroy (stream->source);
  48         if (stream->output != NULL)
  49                 ms_filter_destroy (stream->output);
  50         if (stream->decoder != NULL)
  51                 ms_filter_destroy (stream->decoder);
  52         if (stream->sizeconv != NULL)
  53                 ms_filter_destroy (stream->sizeconv);
  54         if (stream->pixconv!=NULL)
  55                 ms_filter_destroy(stream->pixconv);
  56         if (stream->tee!=NULL)
  57                 ms_filter_destroy(stream->tee);
  58         if (stream->ticker != NULL)
  59                 ms_ticker_destroy (stream->ticker);
  60         if (stream->evq!=NULL)
  61                 ortp_ev_queue_destroy(stream->evq);
  62         ms_free (stream);
  63 }
  64
  65 /*this function must be called from the MSTicker thread:
  66 it replaces one filter by another one.
  67 This is a dirty hack that works anyway.
  68 It would be interesting to have something that does the job
  69 simplier within the MSTicker api
  70 */
  71 void video_stream_change_decoder(VideoStream *stream, int payload){
  72         RtpSession *session=stream->session;
  73         RtpProfile *prof=rtp_session_get_profile(session);
  74         PayloadType *pt=rtp_profile_get_payload(prof,payload);
  75         if (pt!=NULL){
  76                 MSFilter *dec=ms_filter_create_decoder(pt->mime_type);
  77                 if (dec!=NULL){
  78                         ms_filter_unlink(stream->rtprecv, 0, stream->decoder, 0);
  79                         ms_filter_unlink(stream->decoder,0,stream->output,0);
  80                         ms_filter_postprocess(stream->decoder);
  81                         ms_filter_destroy(stream->decoder);
  82                         stream->decoder=dec;
  83                         if (pt->recv_fmtp!=NULL)
  84                                 ms_filter_call_method(stream->decoder,MS_FILTER_ADD_FMTP,(void*)pt->recv_fmtp);
  85                         ms_filter_link (stream->rtprecv, 0, stream->decoder, 0);
  86                         ms_filter_link (stream->decoder,0 , stream->output, 0);
  87                         ms_filter_preprocess(stream->decoder,stream->ticker);
  88
  89                 }else{
  90                         ms_warning("No decoder found for %s",pt->mime_type);
  91                 }
  92         }else{
  93                 ms_warning("No payload defined with number %i",payload);
  94         }
  95 }
  96
  97 static void video_stream_adapt_bitrate(VideoStream *stream, int jitter, float lost){
  98         if (stream->encoder!=NULL){
  99                 if (lost>10){
 100                         int bitrate=0;
 101                         int new_bitrate;
 102                         ms_warning("Remote reports bad receiving experience, trying to reduce bitrate of video encoder.");
 103
 104                         ms_filter_call_method(stream->encoder,MS_FILTER_GET_BITRATE,&bitrate);
 105                         if (bitrate==0){
 106                                 ms_error("Video encoder does not implement MS_FILTER_GET_BITRATE.");
 107                                 return;
 108                         }
 109                         if (bitrate>=20000){
 110                                 new_bitrate=bitrate-10000;
 111                                 ms_warning("Encoder bitrate reduced from %i to %i b/s.",bitrate,new_bitrate);
 112                                 ms_filter_call_method(stream->encoder,MS_FILTER_SET_BITRATE,&new_bitrate);
 113                         }else{
 114                                 ms_warning("Video encoder bitrate already at minimum.");
 115                         }
 116
 117                 }
 118         }
 119 }
 120
 121 static void video_steam_process_rtcp(VideoStream *stream, mblk_t *m){
 122         do{
 123                 if (rtcp_is_SR(m)){
 124                         const report_block_t *rb;
 125                         ms_message("video_steam_process_rtcp: receiving RTCP SR");
 126                         rb=rtcp_SR_get_report_block(m,0);
 127                         if (rb){
 128                                 unsigned int ij;
 129                                 float flost;
 130                                 ij=report_block_get_interarrival_jitter(rb);
 131                                 flost=(float)(100.0*report_block_get_fraction_lost(rb)/256.0);
 132                                 ms_message("interarrival jitter=%u , lost packets percentage since last report=%f ",ij,flost);
 133                                 if (stream->adapt_bitrate) video_stream_adapt_bitrate(stream,ij,flost);
 134                         }
 135                 }
 136         }while(rtcp_next_packet(m));
 137 }
 138
 139 void video_stream_iterate(VideoStream *stream){
 140
 141         if (stream->output!=NULL)
 142                 ms_filter_call_method_noarg(stream->output,
 143                         MS_VIDEO_OUT_HANDLE_RESIZING);
 144
 145         if (stream->evq){
 146                 OrtpEvent *ev=ortp_ev_queue_get(stream->evq);
 147                 if (ev!=NULL){
 148                         if (ortp_event_get_type(ev)==ORTP_EVENT_RTCP_PACKET_RECEIVED){
 149                                 OrtpEventData *evd=ortp_event_get_data(ev);
 150                                 video_steam_process_rtcp(stream,evd->packet);
 151                         }
 152                         ortp_event_destroy(ev);
 153                 }
 154         }
 155 }
 156
 157 static void payload_type_changed(RtpSession *session, unsigned long data){
 158         VideoStream *stream=(VideoStream*)data;
 159         int pt=rtp_session_get_recv_payload_type(stream->session);
 160         video_stream_change_decoder(stream,pt);
 161 }
 162
 163 VideoStream *video_stream_new(int locport, bool_t use_ipv6){
 164         VideoStream *stream = (VideoStream *)ms_new0 (VideoStream, 1);
 165         stream->session=create_duplex_rtpsession(locport,use_ipv6);
 166         stream->evq=ortp_ev_queue_new();
 167         stream->rtpsend=ms_filter_new(MS_RTP_SEND_ID);
 168         rtp_session_register_event_queue(stream->session,stream->evq);
 169         stream->sent_vsize.width=MS_VIDEO_SIZE_CIF_W;
 170         stream->sent_vsize.height=MS_VIDEO_SIZE_CIF_H;
 171         return stream;
 172 }
 173
 174 void video_stream_set_sent_video_size(VideoStream *stream, MSVideoSize vsize){
 175   ms_message("Setting vidoe size %dx%d", vsize.width, vsize.height);
 176         stream->sent_vsize=vsize;
 177 }
 178
 179 void video_stream_set_relay_session_id(VideoStream *stream, const char *id){
 180         ms_filter_call_method(stream->rtpsend, MS_RTP_SEND_SET_RELAY_SESSION_ID,(void*)id);
 181 }
 182
 183 void video_stream_enable_self_view(VideoStream *stream, bool_t val){
 184         MSFilter *out=stream->output;
 185         stream->corner=val ? 0 : -1;
 186         if (out){
 187                 ms_filter_call_method(out,MS_VIDEO_OUT_SET_CORNER,&stream->corner);
 188         }
 189 }
 190
 191 void video_stream_enable_adaptive_bitrate_control(VideoStream *s, bool_t yesno){
 192         s->adapt_bitrate=yesno;
 193 }
 194
 195 int video_stream_start (VideoStream *stream, RtpProfile *profile, const char *remip, int remport,
 196         int rem_rtcp_port, int payload, int jitt_comp, MSWebCam *cam){
 197         PayloadType *pt;
 198         RtpSession *rtps=stream->session;
 199         MSPixFmt format;
 200         MSVideoSize vsize,cam_vsize,disp_size;
 201         float fps=15;
 202         int tmp;
 203         JBParameters jbp;
 204         const int socket_buf_size=2000000;
 205
 206         ms_message("%s entry", __FUNCTION__);
 207
 208         pt=rtp_profile_get_payload(profile,payload);
 209         if (pt==NULL){
 210                 ms_error("videostream.c: undefined payload type.");
 211                 return -1;
 212         }
 213         stream->encoder=ms_filter_create_encoder(pt->mime_type);
 214         stream->decoder=ms_filter_create_decoder(pt->mime_type);
 215         if ((stream->encoder==NULL) || (stream->decoder==NULL)){
 216                 /* big problem: we have not a registered codec for this payload...*/
 217                 ms_error("videostream.c: No codecs available for payload %i:%s.",payload,pt->mime_type);
 218                 return -1;
 219         }
 220
 221         rtp_session_set_profile(rtps,profile);
 222         if (remport>0) rtp_session_set_remote_addr_full(rtps,remip,remport,rem_rtcp_port);
 223         rtp_session_set_payload_type(rtps,payload);
 224         rtp_session_set_jitter_compensation(rtps,jitt_comp);
 225
 226         rtp_session_signal_connect(stream->session,"payload_type_changed",
 227                         (RtpCallback)payload_type_changed,(unsigned long)stream);
 228
 229         rtp_session_set_recv_buf_size(stream->session,MAX_RTP_SIZE);
 230
 231         rtp_session_get_jitter_buffer_params(stream->session,&jbp);
 232         jbp.max_packets=1000;//needed for high resolution video
 233         rtp_session_set_jitter_buffer_params(stream->session,&jbp);
 234
 235         rtp_session_set_rtp_socket_recv_buffer_size(stream->session,socket_buf_size);
 236         rtp_session_set_rtp_socket_send_buffer_size(stream->session,socket_buf_size);
 237
 238         /* creates two rtp filters to recv send streams (remote part) */
 239         if (remport>0) ms_filter_call_method(stream->rtpsend,MS_RTP_SEND_SET_SESSION,stream->session);
 240
 241         stream->rtprecv = ms_filter_new (MS_RTP_RECV_ID);
 242         ms_filter_call_method(stream->rtprecv,MS_RTP_RECV_SET_SESSION,stream->session);
 243
 244         /* creates the filters */
 245         stream->source = ms_web_cam_create_reader(cam);
 246         stream->tee = ms_filter_new(MS_TEE_ID);
 247         stream->output=ms_filter_new(MS_VIDEO_OUT_ID);
 248         stream->sizeconv=ms_filter_new(MS_SIZE_CONV_ID);
 249
 250         if (pt->normal_bitrate>0){
 251                 ms_message("Limiting bitrate of video encoder to %i bits/s",pt->normal_bitrate);
 252                 ms_filter_call_method(stream->encoder,MS_FILTER_SET_BITRATE,&pt->normal_bitrate);
 253         }
 254         /* set parameters to the encoder and decoder*/
 255         if (pt->send_fmtp){
 256                 ms_filter_call_method(stream->encoder,MS_FILTER_ADD_FMTP,pt->send_fmtp);
 257                 ms_filter_call_method(stream->decoder,MS_FILTER_ADD_FMTP,pt->send_fmtp);
 258         }
 259         ms_filter_call_method(stream->encoder,MS_FILTER_GET_VIDEO_SIZE,&vsize);
 260         vsize=ms_video_size_min(vsize,stream->sent_vsize);
 261         ms_filter_call_method(stream->encoder,MS_FILTER_SET_VIDEO_SIZE,&vsize);
 262         ms_filter_call_method(stream->encoder,MS_FILTER_GET_FPS,&fps);
 263         ms_message("Setting vsize=%ix%i, fps=%f",vsize.width,vsize.height,fps);
 264         /* configure the filters */
 265         ms_filter_call_method(stream->source,MS_FILTER_SET_FPS,&fps);
 266         ms_filter_call_method(stream->source,MS_FILTER_SET_VIDEO_SIZE,&vsize);
 267
 268         /* get the output format for webcam reader */
 269         ms_filter_call_method(stream->source,MS_FILTER_GET_PIX_FMT,&format);
 270         if (format==MS_MJPEG){
 271                 stream->pixconv=ms_filter_new(MS_MJPEG_DEC_ID);
 272         }else{
 273                 stream->pixconv = ms_filter_new(MS_PIX_CONV_ID);
 274                 /*set it to the pixconv */
 275                 ms_filter_call_method(stream->pixconv,MS_FILTER_SET_PIX_FMT,&format);
 276
 277                 ms_filter_call_method(stream->source,MS_FILTER_GET_VIDEO_SIZE,&cam_vsize);
 278
 279                 ms_filter_call_method(stream->pixconv,MS_FILTER_SET_VIDEO_SIZE,&cam_vsize);
 280         }
 281
 282         ms_filter_call_method(stream->sizeconv,MS_FILTER_SET_VIDEO_SIZE,&vsize);
 283
 284         /*force the decoder to output YUV420P */
 285         format=MS_YUV420P;
 286         ms_filter_call_method(stream->decoder,MS_FILTER_SET_PIX_FMT,&format);
 287
 288         disp_size.width=MS_VIDEO_SIZE_CIF_W;
 289         disp_size.height=MS_VIDEO_SIZE_CIF_H;
 290         tmp=1;
 291         ms_filter_call_method(stream->output,MS_FILTER_SET_VIDEO_SIZE,&disp_size);
 292         ms_filter_call_method(stream->output,MS_VIDEO_OUT_AUTO_FIT,&tmp);
 293         ms_filter_call_method(stream->output,MS_FILTER_SET_PIX_FMT,&format);
 294         ms_filter_call_method(stream->output,MS_VIDEO_OUT_SET_CORNER,&stream->corner);
 295
 296         if (pt->recv_fmtp!=NULL)
 297                 ms_filter_call_method(stream->decoder,MS_FILTER_ADD_FMTP,(void*)pt->recv_fmtp);
 298
 299         /* and then connect all */
 300         ms_filter_link (stream->source, 0, stream->pixconv, 0);
 301         ms_filter_link (stream->pixconv, 0, stream->sizeconv, 0);
 302         ms_filter_link (stream->sizeconv, 0, stream->tee, 0);
 303         ms_filter_link (stream->tee, 0 ,stream->encoder, 0 );
 304         ms_filter_link (stream->encoder,0, stream->rtpsend,0);
 305
 306         ms_filter_link (stream->rtprecv, 0, stream->decoder, 0);
 307         ms_filter_link (stream->decoder,0 , stream->output, 0);
 308         /* the source video must be send for preview */
 309         ms_filter_link(stream->tee,1,stream->output,1);
 310
 311         /* create the ticker */
 312         stream->ticker = ms_ticker_new();
 313         ms_ticker_set_name(stream->ticker,"Video MSTicker");
 314         /* attach it the graph */
 315         ms_ticker_attach (stream->ticker, stream->source);
 316         return 0;
 317 }
 318
 319 void video_stream_send_vfu(VideoStream *stream){
 320         if (stream->encoder)
 321                 ms_filter_call_method_noarg(stream->encoder,MS_FILTER_REQ_VFU);
 322 }
 323
 324 void
 325 video_stream_stop (VideoStream * stream)
 326 {
 327         if (stream->ticker){
 328                 ms_ticker_detach(stream->ticker,stream->source);
 329
 330                 rtp_stats_display(rtp_session_get_stats(stream->session),"Video session's RTP statistics");
 331
 332                 ms_filter_unlink(stream->source,0,stream->pixconv,0);
 333                 ms_filter_unlink (stream->pixconv, 0, stream->sizeconv, 0);
 334                 ms_filter_unlink (stream->sizeconv, 0, stream->tee, 0);
 335                 ms_filter_unlink(stream->tee,0,stream->encoder,0);
 336                 ms_filter_unlink(stream->encoder, 0, stream->rtpsend,0);
 337                 ms_filter_unlink(stream->rtprecv, 0, stream->decoder, 0);
 338                 ms_filter_unlink(stream->decoder,0,stream->output,0);
 339                 ms_filter_unlink(stream->tee,1,stream->output,1);
 340         }
 341         video_stream_free (stream);
 342 }
 343
 344
 345 void video_stream_set_rtcp_information(VideoStream *st, const char *cname, const char *tool){
 346         if (st->session!=NULL){
 347                 rtp_session_set_source_description(st->session,cname,NULL,NULL,NULL,NULL,tool,
 348                                                                                         "This is free software (GPL) !");
 349         }
 350 }
 351
 352 unsigned long video_stream_get_native_window_id(VideoStream *stream){
 353         unsigned long id;
 354         if (stream->output){
 355                 if (ms_filter_call_method(stream->output,MS_VIDEO_OUT_GET_NATIVE_WINDOW_ID,&id)==0)
 356                         return id;
 357         }
 358         return 0;
 359 }
 360
 361
 362 VideoStream * video_preview_start(MSWebCam *device, MSVideoSize disp_size){
 363         VideoStream *stream = (VideoStream *)ms_new0 (VideoStream, 1);
 364         MSVideoSize vsize=disp_size;
 365         MSPixFmt format;
 366         float fps=(float)29.97;
 367         int mirroring=1;
 368
 369         /* creates the filters */
 370         stream->source = ms_web_cam_create_reader(device);
 371         stream->output = ms_filter_new(MS_VIDEO_OUT_ID);
 372
 373
 374         /* configure the filters */
 375         ms_filter_call_method(stream->source,MS_FILTER_SET_VIDEO_SIZE,&vsize);
 376         ms_filter_call_method(stream->source,MS_FILTER_SET_FPS,&fps);
 377         ms_filter_call_method(stream->source,MS_FILTER_GET_PIX_FMT,&format);
 378         ms_filter_call_method(stream->source,MS_FILTER_GET_VIDEO_SIZE,&vsize);
 379         if (format==MS_MJPEG){
 380                 stream->pixconv=ms_filter_new(MS_MJPEG_DEC_ID);
 381         }else{
 382                 stream->pixconv=ms_filter_new(MS_PIX_CONV_ID);
 383                 ms_filter_call_method(stream->pixconv,MS_FILTER_SET_PIX_FMT,&format);
 384                 ms_filter_call_method(stream->pixconv,MS_FILTER_SET_VIDEO_SIZE,&vsize);
 385         }
 386
 387         format=MS_YUV420P;
 388         ms_filter_call_method(stream->output,MS_FILTER_SET_PIX_FMT,&format);
 389         ms_filter_call_method(stream->output,MS_FILTER_SET_VIDEO_SIZE,&disp_size);
 390         ms_filter_call_method(stream->output,MS_VIDEO_OUT_ENABLE_MIRRORING,&mirroring);
 391         /* and then connect all */
 392
 393         ms_filter_link(stream->source,0, stream->pixconv,0);
 394         ms_filter_link(stream->pixconv, 0, stream->output, 0);
 395
 396         /* create the ticker */
 397         stream->ticker = ms_ticker_new();
 398         ms_ticker_set_name(stream->ticker,"Video MSTicker");
 399         ms_ticker_attach (stream->ticker, stream->source);
 400         return stream;
 401 }
 402
 403 void video_preview_stop(VideoStream *stream){
 404         ms_ticker_detach(stream->ticker, stream->source);
 405         ms_filter_unlink(stream->source,0,stream->pixconv,0);
 406         ms_filter_unlink(stream->pixconv,0,stream->output,0);
 407
 408         video_stream_free(stream);
 409 }
 410
 411
 412 int video_stream_send_only_start(VideoStream* stream, RtpProfile *profile, const char *remip, int remport,
 413         int rem_rtcp_port, int payload, int jitt_comp, MSWebCam *device){
 414         PayloadType *pt;
 415         MSPixFmt format;
 416         MSVideoSize vsize;
 417         RtpSession *rtps=stream->session;
 418         float fps=15;
 419
 420         vsize.width=MS_VIDEO_SIZE_CIF_W;
 421         vsize.height=MS_VIDEO_SIZE_CIF_H;
 422
 423         rtp_session_set_profile(rtps,profile);
 424         if (remport>0) rtp_session_set_remote_addr_full(rtps,remip,remport,rem_rtcp_port);
 425         rtp_session_set_payload_type(rtps,payload);
 426         rtp_session_set_jitter_compensation(rtps,jitt_comp);
 427
 428         /* creates rtp filter to send streams (remote part) */
 429         rtp_session_set_recv_buf_size(rtps,MAX_RTP_SIZE);
 430         stream->rtpsend =ms_filter_new(MS_RTP_SEND_ID);
 431         if (remport>0) ms_filter_call_method(stream->rtpsend,MS_RTP_SEND_SET_SESSION,stream->session);
 432
 433         /* creates the filters */
 434         pt=rtp_profile_get_payload(profile,payload);
 435         if (pt==NULL){
 436                 video_stream_free(stream);
 437                 ms_error("videostream.c: undefined payload type.");
 438                 return -1;
 439         }
 440         stream->encoder=ms_filter_create_encoder(pt->mime_type);
 441         if ((stream->encoder==NULL)){
 442                 /* big problem: we have not a registered codec for this payload...*/
 443                 video_stream_free(stream);
 444                 ms_error("videostream.c: No codecs available for payload %i.",payload);
 445                 return -1;
 446         }
 447
 448         /* creates the filters */
 449         stream->source = ms_web_cam_create_reader(device);
 450         stream->sizeconv=ms_filter_new(MS_SIZE_CONV_ID);
 451
 452         /* configure the filters */
 453         if (pt->send_fmtp)
 454                 ms_filter_call_method(stream->encoder,MS_FILTER_ADD_FMTP,pt->send_fmtp);
 455
 456         if (pt->normal_bitrate>0){
 457                 ms_message("Limiting bitrate of video encoder to %i bits/s",pt->normal_bitrate);
 458                 ms_filter_call_method(stream->encoder,MS_FILTER_SET_BITRATE,&pt->normal_bitrate);
 459         }
 460
 461         ms_filter_call_method(stream->encoder,MS_FILTER_GET_FPS,&fps);
 462         ms_filter_call_method(stream->encoder,MS_FILTER_GET_VIDEO_SIZE,&vsize);
 463         vsize=ms_video_size_min(vsize,stream->sent_vsize);
 464         ms_filter_call_method(stream->encoder,MS_FILTER_SET_VIDEO_SIZE,&vsize);
 465
 466         ms_filter_call_method(stream->source,MS_FILTER_SET_FPS,&fps);
 467         ms_filter_call_method(stream->source,MS_FILTER_SET_VIDEO_SIZE,&vsize);
 468
 469         /* get the output format for webcam reader */
 470         ms_filter_call_method(stream->source,MS_FILTER_GET_PIX_FMT,&format);
 471         /*set it to the pixconv */
 472
 473         /* bug fix from AMD: What about MJPEG mode???*/
 474         if (format==MS_MJPEG){
 475                 stream->pixconv=ms_filter_new(MS_MJPEG_DEC_ID);
 476         }else{
 477                 stream->pixconv=ms_filter_new(MS_PIX_CONV_ID);
 478                 ms_filter_call_method(stream->pixconv,MS_FILTER_SET_PIX_FMT,&format);
 479
 480                 ms_filter_call_method(stream->source,MS_FILTER_GET_VIDEO_SIZE,&vsize);
 481                 ms_filter_call_method(stream->pixconv,MS_FILTER_SET_VIDEO_SIZE,&vsize);
 482         }
 483
 484         ms_filter_call_method(stream->encoder,MS_FILTER_GET_VIDEO_SIZE,&vsize);
 485         ms_filter_call_method(stream->sizeconv,MS_FILTER_SET_VIDEO_SIZE,&vsize);
 486
 487         ms_message("vsize=%ix%i, fps=%f, send format: %s, capture format: %d, bitrate: %d",
 488                         vsize.width,vsize.height,fps,pt->send_fmtp,format, pt->normal_bitrate);
 489
 490         /* and then connect all */
 491         ms_filter_link (stream->source, 0, stream->pixconv, 0);
 492         ms_filter_link (stream->pixconv, 0, stream->sizeconv, 0);
 493         ms_filter_link (stream->sizeconv, 0, stream->encoder, 0);
 494         ms_filter_link (stream->encoder,0, stream->rtpsend,0);
 495
 496         /* create the ticker */
 497         stream->ticker = ms_ticker_new();
 498         /* attach it the graph */
 499         ms_ticker_attach (stream->ticker, stream->source);
 500         return 0;
 501 }
 502
 503 void video_stream_send_only_stop(VideoStream *stream){
 504         if (stream->ticker){
 505                 ms_ticker_detach (stream->ticker, stream->source);
 506                 ms_filter_unlink(stream->source,0,stream->pixconv,0);
 507                 ms_filter_unlink (stream->pixconv, 0, stream->sizeconv, 0);
 508                 ms_filter_unlink (stream->sizeconv, 0, stream->encoder, 0);
 509                 ms_filter_unlink(stream->encoder,0,stream->rtpsend,0);
 510         }
 511         video_stream_free(stream);
 512 }
 513
 514 int video_stream_recv_only_start (VideoStream *stream, RtpProfile *profile, const char *remip, int remport,int payload, int jitt_comp){
 515         PayloadType *pt;
 516         MSPixFmt format;
 517         MSVideoSize vsize;
 518         RtpSession *rtps=stream->session;
 519
 520         vsize.width=MS_VIDEO_SIZE_CIF_W;
 521         vsize.height=MS_VIDEO_SIZE_CIF_H;
 522
 523         rtp_session_set_profile(rtps,profile);
 524         if (remport>0) rtp_session_set_remote_addr(rtps,remip,remport);
 525         rtp_session_set_payload_type(rtps,payload);
 526         rtp_session_set_jitter_compensation(rtps,jitt_comp);
 527
 528         /* creates rtp filters to recv streams */
 529         rtp_session_set_recv_buf_size(rtps,MAX_RTP_SIZE);
 530         stream->rtprecv = ms_filter_new (MS_RTP_RECV_ID);
 531         ms_filter_call_method(stream->rtprecv,MS_RTP_RECV_SET_SESSION,rtps);
 532
 533         /* creates the filters */
 534         pt=rtp_profile_get_payload(profile,payload);
 535         if (pt==NULL){
 536                 ms_error("videostream.c: undefined payload type.");
 537                 return -1;
 538         }
 539         stream->decoder=ms_filter_create_decoder(pt->mime_type);
 540         if (stream->decoder==NULL){
 541                 /* big problem: we have not a registered codec for this payload...*/
 542                 ms_error("videostream.c: No codecs available for payload %i:%s.",payload,pt->mime_type);
 543                 return -1;
 544         }
 545         stream->output=ms_filter_new(MS_VIDEO_OUT_ID);
 546
 547         /*force the decoder to output YUV420P */
 548         format=MS_YUV420P;
 549         /*ask the size-converter to always output CIF */
 550         vsize.width=MS_VIDEO_SIZE_CIF_W;
 551         vsize.height=MS_VIDEO_SIZE_CIF_H;
 552         ms_message("Setting output vsize=%ix%i",vsize.width,vsize.height);
 553
 554         ms_filter_call_method(stream->decoder,MS_FILTER_SET_PIX_FMT,&format);
 555         ms_filter_call_method(stream->output,MS_FILTER_SET_PIX_FMT,&format);
 556         ms_filter_call_method(stream->output,MS_FILTER_SET_VIDEO_SIZE,&vsize);
 557
 558         if (pt->recv_fmtp!=NULL) {
 559                 ms_message("pt->recv_fmtp: %s", pt->recv_fmtp);
 560                 ms_filter_call_method(stream->decoder,MS_FILTER_ADD_FMTP,(void*)pt->recv_fmtp);
 561         }
 562
 563         /* and then connect all */
 564         ms_filter_link (stream->rtprecv, 0, stream->decoder, 0);
 565         ms_filter_link (stream->decoder,0 , stream->output, 0);
 566
 567         /* create the ticker */
 568         stream->ticker = ms_ticker_new();
 569         /* attach it the graph */
 570         ms_ticker_attach (stream->ticker, stream->rtprecv);
 571         return 0;
 572 }
 573
 574 void video_stream_recv_only_stop (VideoStream * stream){
 575         if (stream->ticker!=NULL){
 576                 ms_ticker_detach(stream->ticker, stream->rtprecv);
 577                 rtp_stats_display(rtp_session_get_stats(stream->session),"Video session's RTP statistics");
 578                 ms_filter_unlink(stream->rtprecv, 0, stream->decoder, 0);
 579                 ms_filter_unlink(stream->decoder,0,stream->output,0);
 580         }
 581         video_stream_free (stream);
 582 }
 583