git.sesse.net Git - vlc/blob - modules/access/dshow/dshow.cpp

   1 /*****************************************************************************
   2  * dshow.cpp : DirectShow access module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2002, 2003 VideoLAN
   5  * $Id$
   6  *
   7  * Author: Gildas Bazin <gbazin@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/input.h>
  33 #include <vlc/vout.h>
  34
  35 #include "common.h"
  36 #include "filter.h"
  37
  38 /*****************************************************************************
  39  * Access: local prototypes
  40  *****************************************************************************/
  41 static int ReadCompressed( access_t *, byte_t *, int );
  42 static int AccessControl ( access_t *, int, va_list );
  43
  44 static int Demux       ( demux_t * );
  45 static int DemuxControl( demux_t *, int, va_list );
  46
  47 static int OpenDevice( vlc_object_t *, access_sys_t *, string, vlc_bool_t );
  48 static IBaseFilter *FindCaptureDevice( vlc_object_t *, string *,
  49                                        list<string> *, vlc_bool_t );
  50 static size_t EnumDeviceCaps( vlc_object_t *, IBaseFilter *,
  51                               int, int, int, int, int, int,
  52                               AM_MEDIA_TYPE *mt, size_t );
  53 static bool ConnectFilters( vlc_object_t *, access_sys_t *,
  54                             IBaseFilter *, CaptureFilter * );
  55 static int FindDevicesCallback( vlc_object_t *, char const *,
  56                                 vlc_value_t, vlc_value_t, void * );
  57 static int ConfigDevicesCallback( vlc_object_t *, char const *,
  58                                   vlc_value_t, vlc_value_t, void * );
  59
  60 static void ShowPropertyPage( IUnknown * );
  61 static void ShowDeviceProperties( vlc_object_t *, ICaptureGraphBuilder2 *,
  62                                   IBaseFilter *, vlc_bool_t );
  63 static void ShowTunerProperties( vlc_object_t *, ICaptureGraphBuilder2 *,
  64                                  IBaseFilter *, vlc_bool_t );
  65
  66 /*****************************************************************************
  67  * Module descriptor
  68  *****************************************************************************/
  69 static char *ppsz_vdev[] = { "", "none" };
  70 static char *ppsz_vdev_text[] = { N_("Default"), N_("None") };
  71 static char *ppsz_adev[] = { "", "none" };
  72 static char *ppsz_adev_text[] = { N_("Default"), N_("None") };
  73
  74 #define CACHING_TEXT N_("Caching value in ms")
  75 #define CACHING_LONGTEXT N_( \
  76     "Allows you to modify the default caching value for DirectShow streams. " \
  77     "This value should be set in milliseconds units." )
  78 #define VDEV_TEXT N_("Video device name")
  79 #define VDEV_LONGTEXT N_( \
  80     "You can specify the name of the video device that will be used by the " \
  81     "DirectShow plugin. If you don't specify anything, the default device " \
  82     "will be used.")
  83 #define ADEV_TEXT N_("Audio device name")
  84 #define ADEV_LONGTEXT N_( \
  85     "You can specify the name of the audio device that will be used by the " \
  86     "DirectShow plugin. If you don't specify anything, the default device " \
  87     "will be used.")
  88 #define SIZE_TEXT N_("Video size")
  89 #define SIZE_LONGTEXT N_( \
  90     "You can specify the size of the video that will be displayed by the " \
  91     "DirectShow plugin. If you don't specify anything the default size for " \
  92     "your device will be used.")
  93 #define CHROMA_TEXT N_("Video input chroma format")
  94 #define CHROMA_LONGTEXT N_( \
  95     "Force the DirectShow video input to use a specific chroma format " \
  96     "(eg. I420 (default), RV24, etc.)")
  97 #define CONFIG_TEXT N_("Device properties")
  98 #define CONFIG_LONGTEXT N_( \
  99     "Show the properties dialog of the selected device before starting the " \
 100     "stream.")
 101 #define TUNER_TEXT N_("Tuner properties")
 102 #define TUNER_LONGTEXT N_( \
 103     "Show the tuner properties [channel selection] page." )
 104
 105 static int  CommonOpen ( vlc_object_t *, access_sys_t *, vlc_bool_t );
 106 static void CommonClose( vlc_object_t *, access_sys_t * );
 107
 108 static int  AccessOpen ( vlc_object_t * );
 109 static void AccessClose( vlc_object_t * );
 110
 111 static int  DemuxOpen  ( vlc_object_t * );
 112 static void DemuxClose ( vlc_object_t * );
 113
 114 vlc_module_begin();
 115     set_shortname( _("DirectShow") );
 116     set_description( _("DirectShow input") );
 117     add_integer( "dshow-caching", (mtime_t)(0.2*CLOCK_FREQ) / 1000, NULL,
 118                  CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
 119
 120     add_string( "dshow-vdev", NULL, NULL, VDEV_TEXT, VDEV_LONGTEXT, VLC_FALSE);
 121         change_string_list( ppsz_vdev, ppsz_vdev_text, FindDevicesCallback );
 122         change_action_add( FindDevicesCallback, N_("Refresh list") );
 123         change_action_add( ConfigDevicesCallback, N_("Configure") );
 124
 125     add_string( "dshow-adev", NULL, NULL, ADEV_TEXT, ADEV_LONGTEXT, VLC_FALSE);
 126         change_string_list( ppsz_adev, ppsz_adev_text, FindDevicesCallback );
 127         change_action_add( FindDevicesCallback, N_("Refresh list") );
 128         change_action_add( ConfigDevicesCallback, N_("Configure") );
 129
 130     add_string( "dshow-size", NULL, NULL, SIZE_TEXT, SIZE_LONGTEXT, VLC_FALSE);
 131
 132     add_string( "dshow-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
 133                 VLC_TRUE );
 134
 135     add_bool( "dshow-config", VLC_FALSE, NULL, CONFIG_TEXT, CONFIG_LONGTEXT,
 136               VLC_FALSE );
 137
 138     add_bool( "dshow-tuner", VLC_FALSE, NULL, TUNER_TEXT, TUNER_LONGTEXT,
 139               VLC_FALSE );
 140
 141     add_shortcut( "dshow" );
 142     set_capability( "access_demux", 0 );
 143     set_callbacks( DemuxOpen, DemuxClose );
 144
 145     add_submodule();
 146     set_description( _("DirectShow input") );
 147     add_shortcut( "dshow" );
 148     set_capability( "access2", 0 );
 149     set_callbacks( AccessOpen, AccessClose );
 150
 151 vlc_module_end();
 152
 153 /*****************************************************************************
 154  * DirectShow elementary stream descriptor
 155  *****************************************************************************/
 156 typedef struct dshow_stream_t
 157 {
 158     string          devicename;
 159     IBaseFilter     *p_device_filter;
 160     CaptureFilter   *p_capture_filter;
 161     AM_MEDIA_TYPE   mt;
 162
 163     union
 164     {
 165       VIDEOINFOHEADER video;
 166       WAVEFORMATEX    audio;
 167
 168     } header;
 169
 170     int             i_fourcc;
 171     es_out_id_t     *p_es;
 172
 173     vlc_bool_t      b_pts;
 174
 175 } dshow_stream_t;
 176
 177 /*****************************************************************************
 178  * DirectShow utility functions
 179  *****************************************************************************/
 180 static void CreateDirectShowGraph( access_sys_t *p_sys )
 181 {
 182     p_sys->i_crossbar_route_depth = 0;
 183
 184     /* Create directshow filter graph */
 185     if( SUCCEEDED( CoCreateInstance( CLSID_FilterGraph, 0, CLSCTX_INPROC,
 186                        (REFIID)IID_IFilterGraph, (void **)&p_sys->p_graph) ) )
 187     {
 188         /* Create directshow capture graph builder if available */
 189         if( SUCCEEDED( CoCreateInstance( CLSID_CaptureGraphBuilder2, 0,
 190                          CLSCTX_INPROC, (REFIID)IID_ICaptureGraphBuilder2,
 191                          (void **)&p_sys->p_capture_graph_builder2 ) ) )
 192         {
 193             p_sys->p_capture_graph_builder2->
 194                 SetFiltergraph((IGraphBuilder *)p_sys->p_graph);
 195         }
 196
 197         p_sys->p_graph->QueryInterface( IID_IMediaControl,
 198                                         (void **)&p_sys->p_control );
 199     }
 200 }
 201
 202 static void DeleteDirectShowGraph( access_sys_t *p_sys )
 203 {
 204     DeleteCrossbarRoutes( p_sys );
 205
 206     /* Remove filters from graph */
 207     for( int i = 0; i < p_sys->i_streams; i++ )
 208     {
 209         p_sys->p_graph->RemoveFilter( p_sys->pp_streams[i]->p_capture_filter );
 210         p_sys->p_graph->RemoveFilter( p_sys->pp_streams[i]->p_device_filter );
 211         p_sys->pp_streams[i]->p_capture_filter->Release();
 212         p_sys->pp_streams[i]->p_device_filter->Release();
 213     }
 214
 215     /* Release directshow objects */
 216     if( p_sys->p_control )
 217     {
 218         p_sys->p_control->Release();
 219         p_sys->p_control = NULL;
 220     }
 221     if( p_sys->p_capture_graph_builder2 )
 222     {
 223         p_sys->p_capture_graph_builder2->Release();
 224         p_sys->p_capture_graph_builder2 = NULL;
 225     }
 226
 227     if( p_sys->p_graph )
 228     {
 229         p_sys->p_graph->Release();
 230         p_sys->p_graph = NULL;
 231     }
 232 }
 233
 234 /*****************************************************************************
 235  * CommonOpen: open direct show device
 236  *****************************************************************************/
 237 static int CommonOpen( vlc_object_t *p_this, access_sys_t *p_sys,
 238                        vlc_bool_t b_access_demux )
 239 {
 240     vlc_value_t  val;
 241     int i;
 242
 243     /* Get/parse options and open device(s) */
 244     string vdevname, adevname;
 245     int i_width = 0, i_height = 0, i_chroma = 0;
 246     vlc_bool_t b_audio = VLC_TRUE;
 247
 248     var_Create( p_this, "dshow-config", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 249     var_Create( p_this, "dshow-tuner", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 250
 251     var_Create( p_this, "dshow-vdev", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 252     var_Get( p_this, "dshow-vdev", &val );
 253     if( val.psz_string ) vdevname = string( val.psz_string );
 254     if( val.psz_string ) free( val.psz_string );
 255
 256     var_Create( p_this, "dshow-adev", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 257     var_Get( p_this, "dshow-adev", &val );
 258     if( val.psz_string ) adevname = string( val.psz_string );
 259     if( val.psz_string ) free( val.psz_string );
 260
 261     static struct {char *psz_size; int  i_width; int  i_height;} size_table[] =
 262     { { "subqcif", 128, 96 }, { "qsif", 160, 120 }, { "qcif", 176, 144 },
 263       { "sif", 320, 240 }, { "cif", 352, 288 }, { "cif", 640, 480 },
 264       { 0, 0, 0 },
 265     };
 266
 267     var_Create( p_this, "dshow-size", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 268     var_Get( p_this, "dshow-size", &val );
 269     if( val.psz_string && *val.psz_string )
 270     {
 271         for( i = 0; size_table[i].psz_size; i++ )
 272         {
 273             if( !strcmp( val.psz_string, size_table[i].psz_size ) )
 274             {
 275                 i_width = size_table[i].i_width;
 276                 i_height = size_table[i].i_height;
 277                 break;
 278             }
 279         }
 280         if( !size_table[i].psz_size ) /* Try to parse "WidthxHeight" */
 281         {
 282             char *psz_parser;
 283             i_width = strtol( val.psz_string, &psz_parser, 0 );
 284             if( *psz_parser == 'x' || *psz_parser == 'X')
 285             {
 286                 i_height = strtol( psz_parser + 1, &psz_parser, 0 );
 287             }
 288             msg_Dbg( p_this, "Width x Height %dx%d", i_width, i_height );
 289         }
 290     }
 291     if( val.psz_string ) free( val.psz_string );
 292
 293     var_Create( p_this, "dshow-chroma", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 294     var_Get( p_this, "dshow-chroma", &val );
 295     if( val.psz_string && strlen( val.psz_string ) >= 4 )
 296     {
 297         i_chroma = VLC_FOURCC( val.psz_string[0], val.psz_string[1],
 298                                val.psz_string[2], val.psz_string[3] );
 299     }
 300     if( val.psz_string ) free( val.psz_string );
 301
 302     var_Create( p_this, "dshow-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 303
 304     /* Initialize OLE/COM */
 305     CoInitialize( 0 );
 306
 307     /* Initialize some data */
 308     p_sys->i_streams = 0;
 309     p_sys->pp_streams = (dshow_stream_t **)malloc( 1 );
 310     p_sys->i_width = i_width;
 311     p_sys->i_height = i_height;
 312     p_sys->i_chroma = i_chroma;
 313
 314     p_sys->p_graph = NULL;
 315     p_sys->p_capture_graph_builder2 = NULL;
 316     p_sys->p_control = NULL;
 317
 318     /* Build directshow graph */
 319     CreateDirectShowGraph( p_sys );
 320
 321     if( OpenDevice( p_this, p_sys, vdevname, 0 ) != VLC_SUCCESS )
 322     {
 323         msg_Err( p_this, "can't open video");
 324     }
 325     else
 326     {
 327         /* Check if we can handle the demuxing ourselves or need to spawn
 328          * a demuxer module */
 329         dshow_stream_t *p_stream = p_sys->pp_streams[p_sys->i_streams-1];
 330
 331         if( p_stream->mt.majortype == MEDIATYPE_Video )
 332         {
 333             if( /* Raw DV stream */
 334                 p_stream->i_fourcc == VLC_FOURCC('d','v','s','l') ||
 335                 p_stream->i_fourcc == VLC_FOURCC('d','v','s','d') ||
 336                 p_stream->i_fourcc == VLC_FOURCC('d','v','h','d') ||
 337                 /* Raw MPEG video stream */
 338                 p_stream->i_fourcc == VLC_FOURCC('m','p','2','v') )
 339             {
 340                 b_audio = VLC_FALSE;
 341             }
 342         }
 343
 344         if( p_stream->mt.majortype == MEDIATYPE_Stream ) b_audio = VLC_FALSE;
 345     }
 346
 347     if( b_audio && OpenDevice( p_this, p_sys, adevname, 1 ) != VLC_SUCCESS )
 348     {
 349         msg_Err( p_this, "can't open audio");
 350     }
 351
 352     for( i = p_sys->i_crossbar_route_depth-1; i >= 0 ; --i )
 353     {
 354         IAMCrossbar *pXbar = p_sys->crossbar_routes[i].pXbar;
 355         LONG VideoInputIndex = p_sys->crossbar_routes[i].VideoInputIndex;
 356         LONG VideoOutputIndex = p_sys->crossbar_routes[i].VideoOutputIndex;
 357         LONG AudioInputIndex = p_sys->crossbar_routes[i].AudioInputIndex;
 358         LONG AudioOutputIndex = p_sys->crossbar_routes[i].AudioOutputIndex;
 359
 360         if( SUCCEEDED(pXbar->Route(VideoOutputIndex, VideoInputIndex)) )
 361         {
 362             msg_Dbg( p_this, "Crossbar at depth %d, Routed video "
 363                      "ouput %ld to video input %ld", i, VideoOutputIndex,
 364                      VideoInputIndex );
 365
 366             if( AudioOutputIndex != -1 && AudioInputIndex != -1 )
 367             {
 368                 if( SUCCEEDED( pXbar->Route(AudioOutputIndex,
 369                                             AudioInputIndex)) )
 370                 {
 371                     msg_Dbg(p_this, "Crossbar at depth %d, Routed audio "
 372                             "ouput %ld to audio input %ld", i,
 373                             AudioOutputIndex, AudioInputIndex );
 374                 }
 375             }
 376         }
 377     }
 378
 379     /*
 380     ** Show properties pages from other filters in graph
 381     */
 382     var_Get( p_this, "dshow-config", &val );
 383     if( val.b_bool )
 384     {
 385         for( i = p_sys->i_crossbar_route_depth-1; i >= 0 ; --i )
 386         {
 387             IAMCrossbar *pXbar = p_sys->crossbar_routes[i].pXbar;
 388             IBaseFilter *p_XF;
 389
 390             if( SUCCEEDED( pXbar->QueryInterface( IID_IBaseFilter,
 391                                                   (void **)&p_XF ) ) )
 392             {
 393                 ShowPropertyPage( p_XF );
 394                 p_XF->Release();
 395             }
 396         }
 397     }
 398
 399     /* Initialize some data */
 400     p_sys->i_current_stream = 0;
 401     vlc_mutex_init( p_this, &p_sys->lock );
 402     vlc_cond_init( p_this, &p_sys->wait );
 403
 404     if( !p_sys->i_streams ) return VLC_EGENERIC;
 405
 406     return VLC_SUCCESS;
 407 }
 408
 409 /*****************************************************************************
 410  * DemuxOpen: open direct show device as an access_demux module
 411  *****************************************************************************/
 412 static int DemuxOpen( vlc_object_t *p_this )
 413 {
 414     demux_t      *p_demux = (demux_t *)p_this;
 415     access_sys_t *p_sys;
 416     int i;
 417
 418     p_sys = (access_sys_t *)malloc( sizeof( access_sys_t ) );
 419     memset( p_sys, 0, sizeof( access_sys_t ) );
 420     p_demux->p_sys = (demux_sys_t *)p_sys;
 421
 422     if( CommonOpen( p_this, p_sys, VLC_TRUE ) != VLC_SUCCESS )
 423     {
 424         CommonClose( p_this, p_sys );
 425         return VLC_EGENERIC;
 426     }
 427
 428     /* Everything is ready. Let's rock baby */
 429     msg_Dbg( p_this, "Playing...");
 430     p_sys->p_control->Run();
 431
 432     p_demux->pf_demux   = Demux;
 433     p_demux->pf_control = DemuxControl;
 434     p_demux->info.i_update = 0;
 435     p_demux->info.i_title = 0;
 436     p_demux->info.i_seekpoint = 0;
 437
 438     for( i = 0; i < p_sys->i_streams; i++ )
 439     {
 440         dshow_stream_t *p_stream = p_sys->pp_streams[i];
 441         es_format_t fmt;
 442
 443         if( p_stream->mt.majortype == MEDIATYPE_Video )
 444         {
 445             es_format_Init( &fmt, VIDEO_ES, p_stream->i_fourcc );
 446
 447             fmt.video.i_width  = p_stream->header.video.bmiHeader.biWidth;
 448             fmt.video.i_height = p_stream->header.video.bmiHeader.biHeight;
 449             fmt.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
 450
 451             if( !p_stream->header.video.bmiHeader.biCompression )
 452             {
 453                 /* RGB DIB are coded from bottom to top */
 454                 fmt.video.i_height = (unsigned int)(-(int)fmt.video.i_height);
 455             }
 456
 457             /* Setup rgb mask for RGB formats */
 458             if( p_stream->i_fourcc == VLC_FOURCC('R','V','2','4') )
 459             {
 460                 /* This is in BGR format */
 461                 fmt.video.i_bmask = 0x00ff0000;
 462                 fmt.video.i_gmask = 0x0000ff00;
 463                 fmt.video.i_rmask = 0x000000ff;
 464             }
 465         }
 466         else if( p_stream->mt.majortype == MEDIATYPE_Audio )
 467         {
 468             es_format_Init( &fmt, AUDIO_ES, p_stream->i_fourcc );
 469
 470             fmt.audio.i_channels = p_stream->header.audio.nChannels;
 471             fmt.audio.i_rate = p_stream->header.audio.nSamplesPerSec;
 472             fmt.audio.i_bitspersample = p_stream->header.audio.wBitsPerSample;
 473             fmt.audio.i_blockalign = fmt.audio.i_channels *
 474                 fmt.audio.i_bitspersample / 8;
 475             fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate *
 476                 fmt.audio.i_bitspersample;
 477         }
 478
 479         p_stream->p_es = es_out_Add( p_demux->out, &fmt );
 480     }
 481
 482     return VLC_SUCCESS;
 483 }
 484
 485 /*****************************************************************************
 486  * AccessOpen: open direct show device as an access module
 487  *****************************************************************************/
 488 static int AccessOpen( vlc_object_t *p_this )
 489 {
 490     access_t     *p_access = (access_t*)p_this;
 491     access_sys_t *p_sys;
 492
 493     p_access->p_sys = p_sys = (access_sys_t *)malloc( sizeof( access_sys_t ) );
 494     memset( p_sys, 0, sizeof( access_sys_t ) );
 495
 496     if( CommonOpen( p_this, p_sys, VLC_TRUE ) != VLC_SUCCESS )
 497     {
 498         CommonClose( p_this, p_sys );
 499         return VLC_EGENERIC;
 500     }
 501
 502     dshow_stream_t *p_stream = p_sys->pp_streams[0];
 503
 504     /* Check if we need to force demuxers */
 505     if( !p_access->psz_demux || !*p_access->psz_demux )
 506     {
 507         if( p_stream->i_fourcc == VLC_FOURCC('d','v','s','l') ||
 508             p_stream->i_fourcc == VLC_FOURCC('d','v','s','d') ||
 509             p_stream->i_fourcc == VLC_FOURCC('d','v','h','d') )
 510         {
 511             p_access->psz_demux = strdup( "rawdv" );
 512         }
 513         else if( p_stream->i_fourcc == VLC_FOURCC('m','p','2','v') )
 514         {
 515             p_access->psz_demux = "mpgv";
 516         }
 517     }
 518
 519     /* Setup Access */
 520     p_access->pf_read = ReadCompressed;
 521     p_access->pf_block = NULL;
 522     p_access->pf_control = AccessControl;
 523     p_access->pf_seek = NULL;
 524     p_access->info.i_update = 0;
 525     p_access->info.i_size = 0;
 526     p_access->info.i_pos = 0;
 527     p_access->info.b_eof = VLC_FALSE;
 528     p_access->info.i_title = 0;
 529     p_access->info.i_seekpoint = 0;
 530     p_access->p_sys = p_sys;
 531
 532     /* Everything is ready. Let's rock baby */
 533     msg_Dbg( p_this, "Playing...");
 534     p_sys->p_control->Run();
 535
 536     return VLC_SUCCESS;
 537 }
 538
 539 /*****************************************************************************
 540  * CommonClose: close device
 541  *****************************************************************************/
 542 static void CommonClose( vlc_object_t *p_this, access_sys_t *p_sys )
 543 {
 544     msg_Dbg( p_this, "Releasing DirectShow");
 545
 546     DeleteDirectShowGraph( p_sys );
 547
 548     /* Uninitialize OLE/COM */
 549     CoUninitialize();
 550
 551     /* Remove filters from graph */
 552     for( int i = 0; i < p_sys->i_streams; i++ )
 553     {
 554         delete p_sys->pp_streams[i];
 555     }
 556     free( p_sys->pp_streams );
 557
 558     vlc_mutex_destroy( &p_sys->lock );
 559     vlc_cond_destroy( &p_sys->wait );
 560
 561     free( p_sys );
 562 }
 563
 564 /*****************************************************************************
 565  * AccessClose: close device
 566  *****************************************************************************/
 567 static void AccessClose( vlc_object_t *p_this )
 568 {
 569     access_t     *p_access = (access_t *)p_this;
 570     access_sys_t *p_sys    = p_access->p_sys;
 571
 572     /* Stop capturing stuff */
 573     p_sys->p_control->Stop();
 574
 575     CommonClose( p_this, p_sys );
 576 }
 577
 578 /*****************************************************************************
 579  * DemuxClose: close device
 580  *****************************************************************************/
 581 static void DemuxClose( vlc_object_t *p_this )
 582 {
 583     demux_t      *p_demux = (demux_t *)p_this;
 584     access_sys_t *p_sys   = (access_sys_t *)p_demux->p_sys;
 585
 586     /* Stop capturing stuff */
 587     p_sys->p_control->Stop();
 588
 589     CommonClose( p_this, p_sys );
 590 }
 591
 592 /****************************************************************************
 593  * ConnectFilters
 594  ****************************************************************************/
 595 static bool ConnectFilters( vlc_object_t *p_this, access_sys_t *p_sys,
 596                             IBaseFilter *p_filter,
 597                             CaptureFilter *p_capture_filter )
 598 {
 599     CapturePin *p_input_pin = p_capture_filter->CustomGetPin();
 600
 601     AM_MEDIA_TYPE mediaType = p_input_pin->CustomGetMediaType();
 602
 603     if( p_sys->p_capture_graph_builder2 )
 604     {
 605         if( FAILED(p_sys->p_capture_graph_builder2->
 606                 RenderStream( &PIN_CATEGORY_CAPTURE, &mediaType.majortype,
 607                               p_filter, 0, (IBaseFilter *)p_capture_filter )) )
 608         {
 609             return false;
 610         }
 611
 612         // Sort out all the possible video inputs
 613         // The class needs to be given the capture filters ANALOGVIDEO input pin
 614         IEnumPins *pins = 0;
 615         if( mediaType.majortype == MEDIATYPE_Video &&
 616             SUCCEEDED(p_filter->EnumPins(&pins)) )
 617         {
 618             IPin        *pP = 0;
 619             ULONG        n;
 620             PIN_INFO     pinInfo;
 621             BOOL         Found = FALSE;
 622             IKsPropertySet *pKs=0;
 623             GUID guid;
 624             DWORD dw;
 625
 626             while( !Found && ( S_OK == pins->Next(1, &pP, &n) ) )
 627             {
 628                 if( S_OK == pP->QueryPinInfo(&pinInfo) )
 629                 {
 630                     // is this pin an ANALOGVIDEOIN input pin?
 631                     if( pinInfo.dir == PINDIR_INPUT &&
 632                         pP->QueryInterface( IID_IKsPropertySet,
 633                                             (void **)&pKs ) == S_OK )
 634                     {
 635                         if( pKs->Get( AMPROPSETID_Pin,
 636                                       AMPROPERTY_PIN_CATEGORY, NULL, 0,
 637                                       &guid, sizeof(GUID), &dw ) == S_OK )
 638                         {
 639                             if( guid == PIN_CATEGORY_ANALOGVIDEOIN )
 640                             {
 641                                 // recursively search crossbar routes
 642                                 FindCrossbarRoutes( p_this, p_sys, pP, 0 );
 643                                 // found it
 644                                 Found = TRUE;
 645                             }
 646                         }
 647                         pKs->Release();
 648                     }
 649                     pinInfo.pFilter->Release();
 650                 }
 651                 pP->Release();
 652             }
 653             pins->Release();
 654         }
 655         return true;
 656     }
 657     else
 658     {
 659         IEnumPins *p_enumpins;
 660         IPin *p_pin;
 661
 662         if( S_OK != p_filter->EnumPins( &p_enumpins ) ) return false;
 663
 664         while( S_OK == p_enumpins->Next( 1, &p_pin, NULL ) )
 665         {
 666             PIN_DIRECTION pin_dir;
 667             p_pin->QueryDirection( &pin_dir );
 668
 669             if( pin_dir == PINDIR_OUTPUT &&
 670                 p_sys->p_graph->ConnectDirect( p_pin, (IPin *)p_input_pin,
 671                                                0 ) == S_OK )
 672             {
 673                 p_pin->Release();
 674                 p_enumpins->Release();
 675                 return true;
 676             }
 677             p_pin->Release();
 678         }
 679
 680         p_enumpins->Release();
 681         return false;
 682     }
 683 }
 684
 685 /*
 686  * get fourcc priority from arbritary preference, the higher the better
 687  */
 688 static int GetFourCCPriority( int i_fourcc )
 689 {
 690     switch( i_fourcc )
 691     {
 692     case VLC_FOURCC('I','4','2','0'):
 693     case VLC_FOURCC('f','l','3','2'):
 694         return 9;
 695     case VLC_FOURCC('Y','V','1','2'):
 696     case VLC_FOURCC('a','r','a','w'):
 697         return 8;
 698     case VLC_FOURCC('R','V','2','4'):
 699         return 7;
 700     case VLC_FOURCC('Y','U','Y','2'):
 701     case VLC_FOURCC('R','V','3','2'):
 702     case VLC_FOURCC('R','G','B','A'):
 703         return 6;
 704     }
 705
 706     return 0;
 707 }
 708
 709 #define MAX_MEDIA_TYPES 32
 710
 711 static int OpenDevice( vlc_object_t *p_this, access_sys_t *p_sys,
 712                        string devicename, vlc_bool_t b_audio )
 713 {
 714     /* See if device is already opened */
 715     for( int i = 0; i < p_sys->i_streams; i++ )
 716     {
 717         if( devicename.size() &&
 718             p_sys->pp_streams[i]->devicename == devicename )
 719         {
 720             /* Already opened */
 721             return VLC_SUCCESS;
 722         }
 723     }
 724
 725     list<string> list_devices;
 726
 727     /* Enumerate devices and display their names */
 728     FindCaptureDevice( p_this, NULL, &list_devices, b_audio );
 729
 730     if( !list_devices.size() )
 731         return VLC_EGENERIC;
 732
 733     list<string>::iterator iter;
 734     for( iter = list_devices.begin(); iter != list_devices.end(); iter++ )
 735         msg_Dbg( p_this, "found device: %s", iter->c_str() );
 736
 737     /* If no device name was specified, pick the 1st one */
 738     if( devicename.size() == 0 )
 739     {
 740         devicename = *list_devices.begin();
 741     }
 742
 743     // Use the system device enumerator and class enumerator to find
 744     // a capture/preview device, such as a desktop USB video camera.
 745     IBaseFilter *p_device_filter =
 746         FindCaptureDevice( p_this, &devicename, 0, b_audio );
 747     if( p_device_filter )
 748         msg_Dbg( p_this, "using device: %s", devicename.c_str() );
 749     else
 750     {
 751         msg_Err( p_this, "can't use device: %s, unsupported device type",
 752                  devicename.c_str() );
 753         return VLC_EGENERIC;
 754     }
 755
 756     // Retreive acceptable media types supported by device
 757     AM_MEDIA_TYPE media_types[MAX_MEDIA_TYPES];
 758     size_t media_count =
 759         EnumDeviceCaps( p_this, p_device_filter, p_sys->i_chroma,
 760                         p_sys->i_width, p_sys->i_height,
 761                         0, 0, 0, media_types, MAX_MEDIA_TYPES );
 762
 763     /* Find out if the pin handles MEDIATYPE_Stream, in which case we
 764      * won't add a prefered media type as this doesn't seem to work well
 765      * -- to investigate. */
 766     vlc_bool_t b_stream_type = VLC_FALSE;
 767     for( int i = 0; i < media_count; i++ )
 768     {
 769         if( media_types[i].majortype == MEDIATYPE_Stream )
 770         {
 771             b_stream_type = VLC_TRUE;
 772             break;
 773         }
 774     }
 775
 776     size_t mt_count = 0;
 777     AM_MEDIA_TYPE *mt = NULL;
 778
 779     if( !b_stream_type && !b_audio )
 780     {
 781         // Insert prefered video media type
 782         AM_MEDIA_TYPE mtr;
 783         VIDEOINFOHEADER vh;
 784
 785         mtr.majortype            = MEDIATYPE_Video;
 786         mtr.subtype              = MEDIASUBTYPE_I420;
 787         mtr.bFixedSizeSamples    = TRUE;
 788         mtr.bTemporalCompression = FALSE;
 789         mtr.pUnk                 = NULL;
 790         mtr.formattype           = FORMAT_VideoInfo;
 791         mtr.cbFormat             = sizeof(vh);
 792         mtr.pbFormat             = (BYTE *)&vh;
 793
 794         memset(&vh, 0, sizeof(vh));
 795
 796         vh.bmiHeader.biSize   = sizeof(vh.bmiHeader);
 797         vh.bmiHeader.biWidth  = p_sys->i_width > 0 ? p_sys->i_width : 320;
 798         vh.bmiHeader.biHeight = p_sys->i_height > 0 ? p_sys->i_height : 240;
 799         vh.bmiHeader.biPlanes      = 3;
 800         vh.bmiHeader.biBitCount    = 12;
 801         vh.bmiHeader.biCompression = VLC_FOURCC('I','4','2','0');
 802         vh.bmiHeader.biSizeImage   = vh.bmiHeader.biWidth * 12 *
 803             vh.bmiHeader.biHeight / 8;
 804         mtr.lSampleSize            = vh.bmiHeader.biSizeImage;
 805
 806         mt_count = 1;
 807         mt = (AM_MEDIA_TYPE *)malloc( sizeof(AM_MEDIA_TYPE)*mt_count );
 808         CopyMediaType(mt, &mtr);
 809     }
 810     else if( !b_stream_type )
 811     {
 812         // Insert prefered audio media type
 813         AM_MEDIA_TYPE mtr;
 814         WAVEFORMATEX wf;
 815
 816         mtr.majortype            = MEDIATYPE_Audio;
 817         mtr.subtype              = MEDIASUBTYPE_PCM;
 818         mtr.bFixedSizeSamples    = TRUE;
 819         mtr.bTemporalCompression = FALSE;
 820         mtr.lSampleSize          = 0;
 821         mtr.pUnk                 = NULL;
 822         mtr.formattype           = FORMAT_WaveFormatEx;
 823         mtr.cbFormat             = sizeof(wf);
 824         mtr.pbFormat             = (BYTE *)&wf;
 825
 826         memset(&wf, 0, sizeof(wf));
 827
 828         wf.wFormatTag = WAVE_FORMAT_PCM;
 829         wf.nChannels = 2;
 830         wf.nSamplesPerSec = 44100;
 831         wf.wBitsPerSample = 16;
 832         wf.nBlockAlign = wf.nSamplesPerSec * wf.wBitsPerSample / 8;
 833         wf.nAvgBytesPerSec = wf.nSamplesPerSec * wf.nBlockAlign;
 834         wf.cbSize = 0;
 835
 836         mt_count = 1;
 837         mt = (AM_MEDIA_TYPE *)malloc( sizeof(AM_MEDIA_TYPE)*mt_count );
 838         CopyMediaType(mt, &mtr);
 839     }
 840
 841     if( media_count > 0 )
 842     {
 843         mt = (AM_MEDIA_TYPE *)realloc( mt, sizeof(AM_MEDIA_TYPE) *
 844                                        (mt_count + media_count) );
 845
 846         // Order and copy returned media types according to arbitrary
 847         // fourcc priority
 848         for( size_t c = 0; c < media_count; c++ )
 849         {
 850             int slot_priority =
 851                 GetFourCCPriority(GetFourCCFromMediaType(media_types[c]));
 852             size_t slot_copy = c;
 853             for( size_t d = c+1; d < media_count; d++ )
 854             {
 855                 int priority =
 856                     GetFourCCPriority(GetFourCCFromMediaType(media_types[d]));
 857                 if( priority > slot_priority )
 858                 {
 859                     slot_priority = priority;
 860                     slot_copy = d;
 861                 }
 862             }
 863             if( slot_copy != c )
 864             {
 865                 mt[c+mt_count] = media_types[slot_copy];
 866                 media_types[slot_copy] = media_types[c];
 867             }
 868             else
 869             {
 870                 mt[c+mt_count] = media_types[c];
 871             }
 872         }
 873         mt_count += media_count;
 874     }
 875
 876     /* Create and add our capture filter */
 877     CaptureFilter *p_capture_filter =
 878         new CaptureFilter( p_this, p_sys, mt, mt_count );
 879     p_sys->p_graph->AddFilter( p_capture_filter, 0 );
 880
 881     /* Add the device filter to the graph (seems necessary with VfW before
 882      * accessing pin attributes). */
 883     p_sys->p_graph->AddFilter( p_device_filter, 0 );
 884
 885     /* Attempt to connect one of this device's capture output pins */
 886     msg_Dbg( p_this, "connecting filters" );
 887     if( ConnectFilters( p_this, p_sys, p_device_filter, p_capture_filter ) )
 888     {
 889         /* Success */
 890         msg_Dbg( p_this, "filters connected successfully !" );
 891
 892         dshow_stream_t dshow_stream;
 893         dshow_stream.b_pts = VLC_FALSE;
 894         dshow_stream.p_es = 0;
 895         dshow_stream.mt =
 896             p_capture_filter->CustomGetPin()->CustomGetMediaType();
 897
 898         /* Show Device properties. Done here so the VLC stream is setup with
 899          * the proper parameters. */
 900         vlc_value_t val;
 901         var_Get( p_this, "dshow-config", &val );
 902         if( val.b_bool )
 903         {
 904             ShowDeviceProperties( p_this, p_sys->p_capture_graph_builder2,
 905                                   p_device_filter, b_audio );
 906         }
 907
 908         var_Get( p_this, "dshow-tuner", &val );
 909         if( val.b_bool )
 910         {
 911             ShowTunerProperties( p_this, p_sys->p_capture_graph_builder2,
 912                                  p_device_filter, b_audio );
 913         }
 914
 915         dshow_stream.mt =
 916             p_capture_filter->CustomGetPin()->CustomGetMediaType();
 917
 918         dshow_stream.i_fourcc = GetFourCCFromMediaType( dshow_stream.mt );
 919         if( dshow_stream.i_fourcc )
 920         {
 921             if( dshow_stream.mt.majortype == MEDIATYPE_Video )
 922             {
 923                 dshow_stream.header.video =
 924                     *(VIDEOINFOHEADER *)dshow_stream.mt.pbFormat;
 925                 msg_Dbg( p_this, "MEDIATYPE_Video" );
 926                 msg_Dbg( p_this, "selected video pin accepts format: %4.4s",
 927                          (char *)&dshow_stream.i_fourcc);
 928             }
 929             else if( dshow_stream.mt.majortype == MEDIATYPE_Audio )
 930             {
 931                 dshow_stream.header.audio =
 932                     *(WAVEFORMATEX *)dshow_stream.mt.pbFormat;
 933                 msg_Dbg( p_this, "MEDIATYPE_Audio" );
 934                 msg_Dbg( p_this, "selected audio pin accepts format: %4.4s",
 935                          (char *)&dshow_stream.i_fourcc);
 936             }
 937             else if( dshow_stream.mt.majortype == MEDIATYPE_Stream )
 938             {
 939                 msg_Dbg( p_this, "MEDIATYPE_Stream" );
 940                 msg_Dbg( p_this, "selected stream pin accepts format: %4.4s",
 941                          (char *)&dshow_stream.i_fourcc);
 942             }
 943             else
 944             {
 945                 msg_Dbg( p_this, "unknown stream majortype" );
 946                 goto fail;
 947             }
 948
 949             /* Add directshow elementary stream to our list */
 950             dshow_stream.p_device_filter = p_device_filter;
 951             dshow_stream.p_capture_filter = p_capture_filter;
 952
 953             p_sys->pp_streams = (dshow_stream_t **)realloc( p_sys->pp_streams,
 954                 sizeof(dshow_stream_t *) * (p_sys->i_streams + 1) );
 955             p_sys->pp_streams[p_sys->i_streams] = new dshow_stream_t;
 956             *p_sys->pp_streams[p_sys->i_streams++] = dshow_stream;
 957
 958             return VLC_SUCCESS;
 959         }
 960     }
 961
 962  fail:
 963     /* Remove filters from graph */
 964     p_sys->p_graph->RemoveFilter( p_device_filter );
 965     p_sys->p_graph->RemoveFilter( p_capture_filter );
 966
 967     /* Release objects */
 968     p_device_filter->Release();
 969     p_capture_filter->Release();
 970
 971     return VLC_EGENERIC;
 972 }
 973
 974 static IBaseFilter *
 975 FindCaptureDevice( vlc_object_t *p_this, string *p_devicename,
 976                    list<string> *p_listdevices, vlc_bool_t b_audio )
 977 {
 978     IBaseFilter *p_base_filter = NULL;
 979     IMoniker *p_moniker = NULL;
 980     ULONG i_fetched;
 981     HRESULT hr;
 982
 983     /* Create the system device enumerator */
 984     ICreateDevEnum *p_dev_enum = NULL;
 985
 986     hr = CoCreateInstance( CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC,
 987                            IID_ICreateDevEnum, (void **)&p_dev_enum );
 988     if( FAILED(hr) )
 989     {
 990         msg_Err( p_this, "failed to create the device enumerator (0x%lx)", hr);
 991         return NULL;
 992     }
 993
 994     /* Create an enumerator for the video capture devices */
 995     IEnumMoniker *p_class_enum = NULL;
 996     if( !b_audio )
 997         hr = p_dev_enum->CreateClassEnumerator( CLSID_VideoInputDeviceCategory,
 998                                                 &p_class_enum, 0 );
 999     else
1000         hr = p_dev_enum->CreateClassEnumerator( CLSID_AudioInputDeviceCategory,
1001                                                 &p_class_enum, 0 );
1002     p_dev_enum->Release();
1003     if( FAILED(hr) )
1004     {
1005         msg_Err( p_this, "failed to create the class enumerator (0x%lx)", hr );
1006         return NULL;
1007     }
1008
1009     /* If there are no enumerators for the requested type, then
1010      * CreateClassEnumerator will succeed, but p_class_enum will be NULL */
1011     if( p_class_enum == NULL )
1012     {
1013         msg_Err( p_this, "no capture device was detected" );
1014         return NULL;
1015     }
1016
1017     /* Enumerate the devices */
1018
1019     /* Note that if the Next() call succeeds but there are no monikers,
1020      * it will return S_FALSE (which is not a failure). Therefore, we check
1021      * that the return code is S_OK instead of using SUCCEEDED() macro. */
1022
1023     while( p_class_enum->Next( 1, &p_moniker, &i_fetched ) == S_OK )
1024     {
1025         /* Getting the property page to get the device name */
1026         IPropertyBag *p_bag;
1027         hr = p_moniker->BindToStorage( 0, 0, IID_IPropertyBag,
1028                                        (void **)&p_bag );
1029         if( SUCCEEDED(hr) )
1030         {
1031             VARIANT var;
1032             var.vt = VT_BSTR;
1033             hr = p_bag->Read( L"FriendlyName", &var, NULL );
1034             p_bag->Release();
1035             if( SUCCEEDED(hr) )
1036             {
1037                 int i_convert = ( lstrlenW( var.bstrVal ) + 1 ) * 2;
1038                 char *p_buf = (char *)alloca( i_convert ); p_buf[0] = 0;
1039                 WideCharToMultiByte( CP_ACP, 0, var.bstrVal, -1, p_buf,
1040                                      i_convert, NULL, NULL );
1041                 SysFreeString(var.bstrVal);
1042
1043                 if( p_listdevices ) p_listdevices->push_back( p_buf );
1044
1045                 if( p_devicename && *p_devicename == string(p_buf) )
1046                 {
1047                     /* Bind Moniker to a filter object */
1048                     hr = p_moniker->BindToObject( 0, 0, IID_IBaseFilter,
1049                                                   (void **)&p_base_filter );
1050                     if( FAILED(hr) )
1051                     {
1052                         msg_Err( p_this, "couldn't bind moniker to filter "
1053                                  "object (0x%lx)", hr );
1054                         p_moniker->Release();
1055                         p_class_enum->Release();
1056                         return NULL;
1057                     }
1058                     p_moniker->Release();
1059                     p_class_enum->Release();
1060                     return p_base_filter;
1061                 }
1062             }
1063         }
1064
1065         p_moniker->Release();
1066     }
1067
1068     p_class_enum->Release();
1069     return NULL;
1070 }
1071
1072 static size_t EnumDeviceCaps( vlc_object_t *p_this, IBaseFilter *p_filter,
1073                               int i_fourcc, int i_width, int i_height,
1074                               int i_channels, int i_samplespersec,
1075                               int i_bitspersample, AM_MEDIA_TYPE *mt,
1076                               size_t mt_max )
1077 {
1078     IEnumPins *p_enumpins;
1079     IPin *p_output_pin;
1080     IEnumMediaTypes *p_enummt;
1081     size_t mt_count = 0;
1082
1083     if( FAILED(p_filter->EnumPins( &p_enumpins )) )
1084     {
1085         msg_Dbg( p_this, "EnumDeviceCaps failed: no pin enumeration !");
1086         return 0;
1087     }
1088
1089     while( S_OK == p_enumpins->Next( 1, &p_output_pin, NULL ) )
1090     {
1091         PIN_INFO info;
1092
1093         if( S_OK == p_output_pin->QueryPinInfo( &info ) )
1094         {
1095             msg_Dbg( p_this, "EnumDeviceCaps: %s pin: %S",
1096                      info.dir == PINDIR_INPUT ? "input" : "output",
1097                      info.achName );
1098             if( info.pFilter ) info.pFilter->Release();
1099         }
1100
1101         p_output_pin->Release();
1102     }
1103
1104     p_enumpins->Reset();
1105
1106     while( !mt_count && p_enumpins->Next( 1, &p_output_pin, NULL ) == S_OK )
1107     {
1108         PIN_INFO info;
1109
1110         if( S_OK == p_output_pin->QueryPinInfo( &info ) )
1111         {
1112             if( info.pFilter ) info.pFilter->Release();
1113             if( info.dir == PINDIR_INPUT )
1114             {
1115                 p_output_pin->Release();
1116                 continue;
1117             }
1118             msg_Dbg( p_this, "EnumDeviceCaps: trying pin %S", info.achName );
1119         }
1120
1121         /* Probe pin */
1122         if( !SUCCEEDED( p_output_pin->EnumMediaTypes( &p_enummt ) ) )
1123         {
1124             p_output_pin->Release();
1125             continue;
1126         }
1127
1128         AM_MEDIA_TYPE *p_mt;
1129         while( p_enummt->Next( 1, &p_mt, NULL ) == S_OK )
1130         {
1131             int i_current_fourcc = GetFourCCFromMediaType( *p_mt );
1132             if( i_current_fourcc && p_mt->majortype == MEDIATYPE_Video )
1133             {
1134                 int i_current_width = p_mt->pbFormat ?
1135                     ((VIDEOINFOHEADER *)p_mt->pbFormat)->bmiHeader.biWidth :0;
1136                 int i_current_height = p_mt->pbFormat ?
1137                     ((VIDEOINFOHEADER *)p_mt->pbFormat)->bmiHeader.biHeight :0;
1138                 if( i_current_height < 0 )
1139                     i_current_height = -i_current_height;
1140
1141                 msg_Dbg( p_this, "EnumDeviceCaps: input pin "
1142                          "accepts chroma: %4.4s, width:%i, height:%i",
1143                          (char *)&i_current_fourcc, i_current_width,
1144                          i_current_height );
1145
1146                 if( ( !i_fourcc || i_fourcc == i_current_fourcc ) &&
1147                     ( !i_width || i_width == i_current_width ) &&
1148                     ( !i_height || i_height == i_current_height ) &&
1149                     mt_count < mt_max )
1150                 {
1151                     /* Pick match */
1152                     mt[mt_count++] = *p_mt;
1153                 }
1154                 else FreeMediaType( *p_mt );
1155             }
1156             else if( i_current_fourcc && p_mt->majortype == MEDIATYPE_Audio )
1157             {
1158                 int i_current_channels =
1159                     ((WAVEFORMATEX *)p_mt->pbFormat)->nChannels;
1160                 int i_current_samplespersec =
1161                     ((WAVEFORMATEX *)p_mt->pbFormat)->nSamplesPerSec;
1162                 int i_current_bitspersample =
1163                     ((WAVEFORMATEX *)p_mt->pbFormat)->wBitsPerSample;
1164
1165                 msg_Dbg( p_this, "EnumDeviceCaps: input pin "
1166                          "accepts format: %4.4s, channels:%i, "
1167                          "samples/sec:%i bits/sample:%i",
1168                          (char *)&i_current_fourcc, i_current_channels,
1169                          i_current_samplespersec, i_current_bitspersample);
1170
1171                 if( (!i_channels || i_channels == i_current_channels) &&
1172                     (!i_samplespersec ||
1173                      i_samplespersec == i_current_samplespersec) &&
1174                     (!i_bitspersample ||
1175                      i_bitspersample == i_current_bitspersample) &&
1176                     mt_count < mt_max )
1177                 {
1178                     /* Pick  match */
1179                     mt[mt_count++] = *p_mt;
1180
1181                     /* Setup a few properties like the audio latency */
1182                     IAMBufferNegotiation *p_ambuf;
1183                     if( SUCCEEDED( p_output_pin->QueryInterface(
1184                           IID_IAMBufferNegotiation, (void **)&p_ambuf ) ) )
1185                     {
1186                         ALLOCATOR_PROPERTIES AllocProp;
1187                         AllocProp.cbAlign = -1;
1188
1189                         /* 100 ms of latency */
1190                         AllocProp.cbBuffer = i_current_channels *
1191                           i_current_samplespersec *
1192                           i_current_bitspersample / 8 / 10;
1193
1194                         AllocProp.cbPrefix = -1;
1195                         AllocProp.cBuffers = -1;
1196                         p_ambuf->SuggestAllocatorProperties( &AllocProp );
1197                         p_ambuf->Release();
1198                     }
1199                 }
1200                 else FreeMediaType( *p_mt );
1201             }
1202             else if( i_current_fourcc && p_mt->majortype == MEDIATYPE_Stream )
1203             {
1204                 msg_Dbg( p_this, "EnumDeviceCaps: input pin "
1205                          "accepts stream format: %4.4s",
1206                          (char *)&i_current_fourcc );
1207
1208                 if( ( !i_fourcc || i_fourcc == i_current_fourcc ) &&
1209                     mt_count < mt_max )
1210                 {
1211                     /* Pick match */
1212                     mt[mt_count++] = *p_mt;
1213                     i_fourcc = i_current_fourcc;
1214                 }
1215                 else FreeMediaType( *p_mt );
1216             }
1217             else
1218             {
1219                 char *psz_type = "unknown";
1220                 if( p_mt->majortype == MEDIATYPE_Video ) psz_type = "video";
1221                 if( p_mt->majortype == MEDIATYPE_Audio ) psz_type = "audio";
1222                 if( p_mt->majortype == MEDIATYPE_Stream ) psz_type = "stream";
1223                 msg_Dbg( p_this, "EnumDeviceCaps: input pin: unknown format "
1224                          "(%s %4.4s)", psz_type, (char *)&p_mt->subtype );
1225                 FreeMediaType( *p_mt );
1226             }
1227             CoTaskMemFree( (PVOID)p_mt );
1228         }
1229
1230         p_enummt->Release();
1231         p_output_pin->Release();
1232     }
1233
1234     p_enumpins->Release();
1235     return mt_count;
1236 }
1237
1238 /*****************************************************************************
1239  * ReadCompressed: reads compressed (MPEG/DV) data from the device.
1240  *****************************************************************************
1241  * Returns -1 in case of error, 0 in case of EOF, otherwise the number of
1242  * bytes.
1243  *****************************************************************************/
1244 static int ReadCompressed( access_t *p_access, uint8_t *p_buffer, int i_len )
1245 {
1246     access_sys_t   *p_sys = p_access->p_sys;
1247     dshow_stream_t *p_stream = NULL;
1248     VLCMediaSample  sample;
1249     int             i_data_size;
1250     uint8_t         *p_data;
1251
1252     /* Read 1 DV/MPEG frame (they contain the video and audio data) */
1253
1254     /* There must be only 1 elementary stream to produce a valid stream
1255      * of MPEG or DV data */
1256     p_stream = p_sys->pp_streams[0];
1257
1258     while( 1 )
1259     {
1260         if( p_access->b_die || p_access->b_error ) return 0;
1261
1262         /* Get new sample/frame from the elementary stream (blocking). */
1263         vlc_mutex_lock( &p_sys->lock );
1264
1265         if( p_stream->p_capture_filter->CustomGetPin()
1266               ->CustomGetSample( &sample ) != S_OK )
1267         {
1268             /* No data available. Wait until some data has arrived */
1269             vlc_cond_wait( &p_sys->wait, &p_sys->lock );
1270             vlc_mutex_unlock( &p_sys->lock );
1271             continue;
1272         }
1273
1274         vlc_mutex_unlock( &p_sys->lock );
1275
1276         /*
1277          * We got our sample
1278          */
1279         i_data_size = sample.p_sample->GetActualDataLength();
1280         sample.p_sample->GetPointer( &p_data );
1281
1282 #if 0
1283         msg_Info( p_access, "access read %i data_size %i", i_len, i_data_size );
1284 #endif
1285         i_data_size = __MIN( i_data_size, (int)i_len );
1286
1287         p_access->p_vlc->pf_memcpy( p_buffer, p_data, i_data_size );
1288
1289         sample.p_sample->Release();
1290
1291         /* The caller got what he wanted */
1292         return i_data_size;
1293     }
1294
1295     return 0; /* never reached */
1296 }
1297
1298 /****************************************************************************
1299  * Demux:
1300  ****************************************************************************/
1301 static int Demux( demux_t *p_demux )
1302 {
1303     access_sys_t *p_sys = (access_sys_t *)p_demux->p_sys;
1304     dshow_stream_t *p_stream = NULL;
1305     VLCMediaSample sample;
1306     int i_data_size, i_stream;
1307     uint8_t *p_data;
1308     block_t *p_block;
1309
1310     vlc_mutex_lock( &p_sys->lock );
1311
1312     /* Try to grab an audio sample (audio has a higher priority) */
1313     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
1314     {
1315         p_stream = p_sys->pp_streams[i_stream];
1316         if( p_stream->mt.majortype == MEDIATYPE_Audio &&
1317             p_stream->p_capture_filter &&
1318             p_stream->p_capture_filter->CustomGetPin()
1319               ->CustomGetSample( &sample ) == S_OK )
1320         {
1321             break;
1322         }
1323     }
1324     /* Try to grab a video sample */
1325     if( i_stream == p_sys->i_streams )
1326     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
1327     {
1328         p_stream = p_sys->pp_streams[i_stream];
1329         if( p_stream->p_capture_filter &&
1330             p_stream->p_capture_filter->CustomGetPin()
1331                 ->CustomGetSample( &sample ) == S_OK )
1332         {
1333             break;
1334         }
1335     }
1336
1337     vlc_mutex_unlock( &p_sys->lock );
1338
1339     if( i_stream == p_sys->i_streams )
1340     {
1341         /* Sleep so we do not consume all the cpu, 10ms seems
1342          * like a good value (100fps) */
1343         msleep( 10000 );
1344         return 1;
1345     }
1346
1347     /*
1348      * We got our sample
1349      */
1350     i_data_size = sample.p_sample->GetActualDataLength();
1351     sample.p_sample->GetPointer( &p_data );
1352
1353     REFERENCE_TIME i_pts, i_end_date;
1354     HRESULT hr = sample.p_sample->GetTime( &i_pts, &i_end_date );
1355     if( hr != VFW_S_NO_STOP_TIME && hr != S_OK ) i_pts = 0;
1356
1357     if( !i_pts )
1358     {
1359         if( p_stream->mt.majortype == MEDIATYPE_Video || !p_stream->b_pts )
1360         {
1361             /* Use our data timestamp */
1362             i_pts = sample.i_timestamp;
1363             p_stream->b_pts = VLC_TRUE;
1364         }
1365     }
1366
1367     i_pts /= 10; /* Dshow works with 100 nano-seconds resolution */
1368
1369 #if 0
1370     msg_Dbg( p_demux, "Read() stream: %i, size: %i, PTS: "I64Fd,
1371              i_stream, i_data_size, i_pts );
1372 #endif
1373
1374     p_block = block_New( p_demux, i_data_size );
1375     p_demux->p_vlc->pf_memcpy( p_block->p_buffer, p_data, i_data_size );
1376     p_block->i_pts = p_block->i_dts = i_pts;
1377     sample.p_sample->Release();
1378
1379     es_out_Control( p_demux->out, ES_OUT_SET_PCR, i_pts > 0 ? i_pts : 0 );
1380     es_out_Send( p_demux->out, p_stream->p_es, p_block );
1381
1382     return 1;
1383 }
1384
1385 /*****************************************************************************
1386  * AccessControl:
1387  *****************************************************************************/
1388 static int AccessControl( access_t *p_access, int i_query, va_list args )
1389 {
1390     vlc_bool_t   *pb_bool;
1391     int          *pi_int;
1392     int64_t      *pi_64;
1393
1394     switch( i_query )
1395     {
1396     /* */
1397     case ACCESS_CAN_SEEK:
1398     case ACCESS_CAN_FASTSEEK:
1399     case ACCESS_CAN_PAUSE:
1400     case ACCESS_CAN_CONTROL_PACE:
1401         pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
1402         *pb_bool = VLC_FALSE;
1403         break;
1404
1405     /* */
1406     case ACCESS_GET_MTU:
1407         pi_int = (int*)va_arg( args, int * );
1408         *pi_int = 0;
1409         break;
1410
1411     case ACCESS_GET_PTS_DELAY:
1412         pi_64 = (int64_t*)va_arg( args, int64_t * );
1413         *pi_64 = (int64_t)var_GetInteger( p_access, "dshow-caching" ) * 1000;
1414         break;
1415
1416     /* */
1417     case ACCESS_SET_PAUSE_STATE:
1418     case ACCESS_GET_TITLE_INFO:
1419     case ACCESS_SET_TITLE:
1420     case ACCESS_SET_SEEKPOINT:
1421     case ACCESS_SET_PRIVATE_ID_STATE:
1422         return VLC_EGENERIC;
1423
1424     default:
1425         msg_Warn( p_access, "unimplemented query in control" );
1426         return VLC_EGENERIC;
1427     }
1428
1429     return VLC_SUCCESS;
1430 }
1431
1432 /****************************************************************************
1433  * DemuxControl:
1434  ****************************************************************************/
1435 static int DemuxControl( demux_t *p_demux, int i_query, va_list args )
1436 {
1437     vlc_bool_t *pb;
1438     int64_t    *pi64;
1439
1440     switch( i_query )
1441     {
1442     /* Special for access_demux */
1443     case DEMUX_CAN_PAUSE:
1444     case DEMUX_SET_PAUSE_STATE:
1445     case DEMUX_CAN_CONTROL_PACE:
1446         pb = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
1447         *pb = VLC_FALSE;
1448         return VLC_SUCCESS;
1449
1450     case DEMUX_GET_PTS_DELAY:
1451         pi64 = (int64_t*)va_arg( args, int64_t * );
1452         *pi64 = (int64_t)var_GetInteger( p_demux, "dshow-caching" ) * 1000;
1453         return VLC_SUCCESS;
1454
1455     case DEMUX_GET_TIME:
1456         pi64 = (int64_t*)va_arg( args, int64_t * );
1457         *pi64 = mdate();
1458         return VLC_SUCCESS;
1459
1460     /* TODO implement others */
1461     default:
1462         return VLC_EGENERIC;
1463     }
1464
1465     return VLC_EGENERIC;
1466 }
1467
1468 /*****************************************************************************
1469  * config variable callback
1470  *****************************************************************************/
1471 static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
1472                                vlc_value_t newval, vlc_value_t oldval, void * )
1473 {
1474     module_config_t *p_item;
1475     vlc_bool_t b_audio = VLC_FALSE;
1476     int i;
1477
1478     p_item = config_FindConfig( p_this, psz_name );
1479     if( !p_item ) return VLC_SUCCESS;
1480
1481     if( !strcmp( psz_name, "dshow-adev" ) ) b_audio = VLC_TRUE;
1482
1483     /* Clear-up the current list */
1484     if( p_item->i_list )
1485     {
1486         /* Keep the 2 first entries */
1487         for( i = 2; i < p_item->i_list; i++ )
1488         {
1489             free( p_item->ppsz_list[i] );
1490             free( p_item->ppsz_list_text[i] );
1491         }
1492         /* TODO: Remove when no more needed */
1493         p_item->ppsz_list[i] = NULL;
1494         p_item->ppsz_list_text[i] = NULL;
1495     }
1496     p_item->i_list = 2;
1497
1498     /* Find list of devices */
1499     list<string> list_devices;
1500
1501     /* Initialize OLE/COM */
1502     CoInitialize( 0 );
1503
1504     FindCaptureDevice( p_this, NULL, &list_devices, b_audio );
1505
1506     /* Uninitialize OLE/COM */
1507     CoUninitialize();
1508
1509     if( !list_devices.size() ) return VLC_SUCCESS;
1510
1511     p_item->ppsz_list =
1512         (char **)realloc( p_item->ppsz_list,
1513                           (list_devices.size()+3) * sizeof(char *) );
1514     p_item->ppsz_list_text =
1515         (char **)realloc( p_item->ppsz_list_text,
1516                           (list_devices.size()+3) * sizeof(char *) );
1517
1518     list<string>::iterator iter;
1519     for( iter = list_devices.begin(), i = 2; iter != list_devices.end();
1520          iter++, i++ )
1521     {
1522         p_item->ppsz_list[i] = strdup( iter->c_str() );
1523         p_item->ppsz_list_text[i] = NULL;
1524         p_item->i_list++;
1525     }
1526     p_item->ppsz_list[i] = NULL;
1527     p_item->ppsz_list_text[i] = NULL;
1528
1529     /* Signal change to the interface */
1530     p_item->b_dirty = VLC_TRUE;
1531
1532     return VLC_SUCCESS;
1533 }
1534
1535 static int ConfigDevicesCallback( vlc_object_t *p_this, char const *psz_name,
1536                                vlc_value_t newval, vlc_value_t oldval, void * )
1537 {
1538     module_config_t *p_item;
1539     vlc_bool_t b_audio = VLC_FALSE;
1540
1541     /* Initialize OLE/COM */
1542     CoInitialize( 0 );
1543
1544     p_item = config_FindConfig( p_this, psz_name );
1545     if( !p_item ) return VLC_SUCCESS;
1546
1547     if( !strcmp( psz_name, "dshow-adev" ) ) b_audio = VLC_TRUE;
1548
1549     string devicename;
1550
1551     if( newval.psz_string && *newval.psz_string )
1552     {
1553         devicename = newval.psz_string;
1554     }
1555     else
1556     {
1557         /* If no device name was specified, pick the 1st one */
1558         list<string> list_devices;
1559
1560         /* Enumerate devices */
1561         FindCaptureDevice( p_this, NULL, &list_devices, b_audio );
1562         if( !list_devices.size() ) return VLC_EGENERIC;
1563         devicename = *list_devices.begin();
1564     }
1565
1566     IBaseFilter *p_device_filter =
1567         FindCaptureDevice( p_this, &devicename, NULL, b_audio );
1568     if( p_device_filter )
1569     {
1570         ShowPropertyPage( p_device_filter );
1571     }
1572     else
1573     {
1574         /* Uninitialize OLE/COM */
1575         CoUninitialize();
1576
1577         msg_Err( p_this, "didn't find device: %s", devicename.c_str() );
1578         return VLC_EGENERIC;
1579     }
1580
1581     /* Uninitialize OLE/COM */
1582     CoUninitialize();
1583
1584     return VLC_SUCCESS;
1585 }
1586
1587 /*****************************************************************************
1588  * Properties
1589  *****************************************************************************/
1590 static void ShowPropertyPage( IUnknown *obj )
1591 {
1592     ISpecifyPropertyPages *p_spec;
1593     CAUUID cauuid;
1594
1595     HRESULT hr = obj->QueryInterface( IID_ISpecifyPropertyPages,
1596                                       (void **)&p_spec );
1597     if( FAILED(hr) ) return;
1598
1599     if( SUCCEEDED(p_spec->GetPages( &cauuid )) )
1600     {
1601         if( cauuid.cElems > 0 )
1602         {
1603             HWND hwnd_desktop = ::GetDesktopWindow();
1604
1605             OleCreatePropertyFrame( hwnd_desktop, 30, 30, NULL, 1, &obj,
1606                                     cauuid.cElems, cauuid.pElems, 0, 0, NULL );
1607
1608             CoTaskMemFree( cauuid.pElems );
1609         }
1610         p_spec->Release();
1611     }
1612 }
1613
1614 static void ShowDeviceProperties( vlc_object_t *p_this,
1615                                   ICaptureGraphBuilder2 *p_capture_graph,
1616                                   IBaseFilter *p_device_filter,
1617                                   vlc_bool_t b_audio )
1618 {
1619     HRESULT hr;
1620     msg_Dbg( p_this, "Configuring Device Properties" );
1621
1622     /*
1623      * Video or audio capture filter page
1624      */
1625     ShowPropertyPage( p_device_filter );
1626
1627     /*
1628      * Audio capture pin
1629      */
1630     if( p_capture_graph && b_audio )
1631     {
1632         IAMStreamConfig *p_SC;
1633
1634         msg_Dbg( p_this, "Showing WDM Audio Configuration Pages" );
1635
1636         hr = p_capture_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
1637                                              &MEDIATYPE_Audio, p_device_filter,
1638                                              IID_IAMStreamConfig,
1639                                              (void **)&p_SC );
1640         if( SUCCEEDED(hr) )
1641         {
1642             ShowPropertyPage(p_SC);
1643             p_SC->Release();
1644         }
1645
1646         /*
1647          * TV Audio filter
1648          */
1649         IAMTVAudio *p_TVA;
1650         HRESULT hr = p_capture_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
1651                                              &MEDIATYPE_Audio, p_device_filter,
1652                                              IID_IAMTVAudio, (void **)&p_TVA );
1653         if( SUCCEEDED(hr) )
1654         {
1655             ShowPropertyPage(p_TVA);
1656             p_TVA->Release();
1657         }
1658     }
1659
1660     /*
1661      * Video capture pin
1662      */
1663     if( p_capture_graph && !b_audio )
1664     {
1665         IAMStreamConfig *p_SC;
1666
1667         msg_Dbg( p_this, "Showing WDM Video Configuration Pages" );
1668
1669         hr = p_capture_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
1670                                              &MEDIATYPE_Interleaved,
1671                                              p_device_filter,
1672                                              IID_IAMStreamConfig,
1673                                              (void **)&p_SC );
1674         if( FAILED(hr) )
1675         {
1676             hr = p_capture_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
1677                                                  &MEDIATYPE_Video,
1678                                                  p_device_filter,
1679                                                  IID_IAMStreamConfig,
1680                                                  (void **)&p_SC );
1681         }
1682
1683         if( SUCCEEDED(hr) )
1684         {
1685             ShowPropertyPage(p_SC);
1686             p_SC->Release();
1687         }
1688     }
1689 }
1690
1691 static void ShowTunerProperties( vlc_object_t *p_this,
1692                                  ICaptureGraphBuilder2 *p_capture_graph,
1693                                  IBaseFilter *p_device_filter,
1694                                  vlc_bool_t b_audio )
1695 {
1696     HRESULT hr;
1697     msg_Dbg( p_this, "Configuring Tuner Properties" );
1698
1699     if( p_capture_graph && !b_audio )
1700     {
1701         IAMTVTuner *p_TV;
1702         hr = p_capture_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
1703                                              &MEDIATYPE_Interleaved,
1704                                              p_device_filter,
1705                                              IID_IAMTVTuner, (void **)&p_TV );
1706         if( FAILED(hr) )
1707         {
1708             hr = p_capture_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
1709                                                  &MEDIATYPE_Video,
1710                                                  p_device_filter,
1711                                                  IID_IAMTVTuner,
1712                                                  (void **)&p_TV );
1713         }
1714
1715         if( SUCCEEDED(hr) )
1716         {
1717             ShowPropertyPage(p_TV);
1718             p_TV->Release();
1719         }
1720     }
1721 }