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 the VideoLAN team
   5  * $Id$
   6  *
   7  * Author: Gildas Bazin <gbazin@videolan.org>
   8  *         Damien Fouilleul <damienf@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #define __STDC_CONSTANT_MACROS 1
  34 #define __STDC_FORMAT_MACROS 1
  35 #include <inttypes.h>
  36
  37 #include <vlc_common.h>
  38 #include <vlc_plugin.h>
  39 #include <vlc_input.h>
  40 #include <vlc_access.h>
  41 #include <vlc_demux.h>
  42 #include <vlc_dialog.h>
  43 #include <vlc_charset.h>
  44
  45 #include "common.h"
  46 #include "filter.h"
  47
  48 /*****************************************************************************
  49  * Access: local prototypes
  50  *****************************************************************************/
  51 static block_t *ReadCompressed( access_t * );
  52 static int AccessControl ( access_t *, int, va_list );
  53
  54 static int Demux       ( demux_t * );
  55 static int DemuxControl( demux_t *, int, va_list );
  56
  57 static int OpenDevice( vlc_object_t *, access_sys_t *, string, bool );
  58 static IBaseFilter *FindCaptureDevice( vlc_object_t *, string *,
  59                                        list<string> *, bool );
  60 static size_t EnumDeviceCaps( vlc_object_t *, IBaseFilter *,
  61                               int, int, int, int, int, int,
  62                               AM_MEDIA_TYPE *mt, size_t );
  63 static bool ConnectFilters( vlc_object_t *, access_sys_t *,
  64                             IBaseFilter *, CaptureFilter * );
  65 static int FindDevicesCallback( vlc_object_t *, char const *,
  66                                 vlc_value_t, vlc_value_t, void * );
  67 static int ConfigDevicesCallback( vlc_object_t *, char const *,
  68                                   vlc_value_t, vlc_value_t, void * );
  69
  70 static void ShowPropertyPage( IUnknown * );
  71 static void ShowDeviceProperties( vlc_object_t *, ICaptureGraphBuilder2 *,
  72                                   IBaseFilter *, bool );
  73 static void ShowTunerProperties( vlc_object_t *, ICaptureGraphBuilder2 *,
  74                                  IBaseFilter *, bool );
  75 static void ConfigTuner( vlc_object_t *, ICaptureGraphBuilder2 *,
  76                          IBaseFilter * );
  77
  78 /*****************************************************************************
  79  * Module descriptor
  80  *****************************************************************************/
  81 static const char *const ppsz_vdev[] = { "", "none" };
  82 static const char *const ppsz_vdev_text[] = { N_("Default"), N_("None") };
  83 static const char *const ppsz_adev[] = { "", "none" };
  84 static const char *const ppsz_adev_text[] = { N_("Default"), N_("None") };
  85 static const int pi_tuner_input[] = { 0, 1, 2 };
  86 static const char *const ppsz_tuner_input_text[] =
  87     {N_("Default"), N_("Cable"), N_("Antenna")};
  88 static const int pi_amtuner_mode[]  = { AMTUNER_MODE_DEFAULT,
  89                                  AMTUNER_MODE_TV,
  90                                  AMTUNER_MODE_FM_RADIO,
  91                                  AMTUNER_MODE_AM_RADIO,
  92                                  AMTUNER_MODE_DSS };
  93 static const char *const ppsz_amtuner_mode_text[] = { N_("Default"),
  94                                           N_("TV"),
  95                                           N_("FM radio"),
  96                                           N_("AM radio"),
  97                                           N_("DSS") };
  98
  99 #define CACHING_TEXT N_("Caching value in ms")
 100 #define CACHING_LONGTEXT N_( \
 101     "Caching value for DirectShow streams. " \
 102     "This value should be set in milliseconds." )
 103 #define VDEV_TEXT N_("Video device name")
 104 #define VDEV_LONGTEXT N_( \
 105     "Name of the video device that will be used by the " \
 106     "DirectShow plugin. If you don't specify anything, the default device " \
 107     "will be used.")
 108 #define ADEV_TEXT N_("Audio device name")
 109 #define ADEV_LONGTEXT N_( \
 110     "Name of the audio device that will be used by the " \
 111     "DirectShow plugin. If you don't specify anything, the default device " \
 112     "will be used. ")
 113 #define SIZE_TEXT N_("Video size")
 114 #define SIZE_LONGTEXT N_( \
 115     "Size of the video that will be displayed by the " \
 116     "DirectShow plugin. If you don't specify anything the default size for " \
 117     "your device will be used. You can specify a standard size (cif, d1, ...) or <width>x<height>.")
 118 #define CHROMA_TEXT N_("Video input chroma format")
 119 #define CHROMA_LONGTEXT N_( \
 120     "Force the DirectShow video input to use a specific chroma format " \
 121     "(eg. I420 (default), RV24, etc.)")
 122 #define FPS_TEXT N_("Video input frame rate")
 123 #define FPS_LONGTEXT N_( \
 124     "Force the DirectShow video input to use a specific frame rate" \
 125     "(eg. 0 means default, 25, 29.97, 50, 59.94, etc.)")
 126 #define CONFIG_TEXT N_("Device properties")
 127 #define CONFIG_LONGTEXT N_( \
 128     "Show the properties dialog of the selected device before starting the " \
 129     "stream.")
 130 #define TUNER_TEXT N_("Tuner properties")
 131 #define TUNER_LONGTEXT N_( \
 132     "Show the tuner properties [channel selection] page." )
 133 #define CHANNEL_TEXT N_("Tuner TV Channel")
 134 #define CHANNEL_LONGTEXT N_( \
 135     "Set the TV channel the tuner will set to " \
 136     "(0 means default)." )
 137 #define COUNTRY_TEXT N_("Tuner country code")
 138 #define COUNTRY_LONGTEXT N_( \
 139     "Set the tuner country code that establishes the current " \
 140     "channel-to-frequency mapping (0 means default)." )
 141 #define TUNER_INPUT_TEXT N_("Tuner input type")
 142 #define TUNER_INPUT_LONGTEXT N_( \
 143     "Select the tuner input type (Cable/Antenna)." )
 144 #define VIDEO_IN_TEXT N_("Video input pin")
 145 #define VIDEO_IN_LONGTEXT N_( \
 146   "Select the video input source, such as composite, s-video, " \
 147   "or tuner. Since these settings are hardware-specific, you should find good " \
 148   "settings in the \"Device config\" area, and use those numbers here. -1 " \
 149   "means that settings will not be changed.")
 150 #define AUDIO_IN_TEXT N_("Audio input pin")
 151 #define AUDIO_IN_LONGTEXT N_( \
 152   "Select the audio input source. See the \"video input\" option." )
 153 #define VIDEO_OUT_TEXT N_("Video output pin")
 154 #define VIDEO_OUT_LONGTEXT N_( \
 155   "Select the video output type. See the \"video input\" option." )
 156 #define AUDIO_OUT_TEXT N_("Audio output pin")
 157 #define AUDIO_OUT_LONGTEXT N_( \
 158   "Select the audio output type. See the \"video input\" option." )
 159
 160 #define AMTUNER_MODE_TEXT N_("AM Tuner mode")
 161 #define AMTUNER_MODE_LONGTEXT N_( \
 162     "AM Tuner mode. Can be one of Default (0), TV (1)," \
 163      "AM Radio (2), FM Radio (3) or DSS (4).")
 164
 165 #define AUDIO_CHANNELS_TEXT N_("Number of audio channels")
 166 #define AUDIO_CHANNELS_LONGTEXT N_( \
 167     "Select audio input format with the given number of audio channels (if non 0)" )
 168
 169 #define AUDIO_SAMPLERATE_TEXT N_("Audio sample rate")
 170 #define AUDIO_SAMPLERATE_LONGTEXT N_( \
 171     "Select audio input format with the given sample rate (if non 0)" )
 172
 173 #define AUDIO_BITSPERSAMPLE_TEXT N_("Audio bits per sample")
 174 #define AUDIO_BITSPERSAMPLE_LONGTEXT N_( \
 175     "Select audio input format with the given bits/sample (if non 0)" )
 176
 177 static int  CommonOpen ( vlc_object_t *, access_sys_t *, bool );
 178 static void CommonClose( vlc_object_t *, access_sys_t * );
 179
 180 static int  AccessOpen ( vlc_object_t * );
 181 static void AccessClose( vlc_object_t * );
 182
 183 static int  DemuxOpen  ( vlc_object_t * );
 184 static void DemuxClose ( vlc_object_t * );
 185
 186 vlc_module_begin ()
 187     set_shortname( N_("DirectShow") )
 188     set_description( N_("DirectShow input") )
 189     set_category( CAT_INPUT )
 190     set_subcategory( SUBCAT_INPUT_ACCESS )
 191     add_integer( "dshow-caching", (mtime_t)(0.2*CLOCK_FREQ) / 1000, NULL,
 192                  CACHING_TEXT, CACHING_LONGTEXT, true )
 193
 194     add_string( "dshow-vdev", NULL, NULL, VDEV_TEXT, VDEV_LONGTEXT, false)
 195         change_string_list( ppsz_vdev, ppsz_vdev_text, FindDevicesCallback )
 196         change_action_add( FindDevicesCallback, N_("Refresh list") )
 197         change_action_add( ConfigDevicesCallback, N_("Configure") )
 198
 199     add_string( "dshow-adev", NULL, NULL, ADEV_TEXT, ADEV_LONGTEXT, false)
 200         change_string_list( ppsz_adev, ppsz_adev_text, FindDevicesCallback )
 201         change_action_add( FindDevicesCallback, N_("Refresh list") )
 202         change_action_add( ConfigDevicesCallback, N_("Configure") )
 203
 204     add_string( "dshow-size", NULL, NULL, SIZE_TEXT, SIZE_LONGTEXT, false)
 205
 206     add_string( "dshow-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT, true )
 207
 208     add_float( "dshow-fps", 0.0f, NULL, FPS_TEXT, FPS_LONGTEXT, true )
 209
 210     add_bool( "dshow-config", false, NULL, CONFIG_TEXT, CONFIG_LONGTEXT, true )
 211
 212     add_bool( "dshow-tuner", false, NULL, TUNER_TEXT, TUNER_LONGTEXT, true )
 213
 214     add_integer( "dshow-tuner-channel", 0, NULL, CHANNEL_TEXT, CHANNEL_LONGTEXT,
 215                 true )
 216
 217     add_integer( "dshow-tuner-country", 0, NULL, COUNTRY_TEXT, COUNTRY_LONGTEXT,
 218                 true )
 219
 220     add_integer( "dshow-tuner-input", 0, NULL, TUNER_INPUT_TEXT,
 221                  TUNER_INPUT_LONGTEXT, true )
 222         change_integer_list( pi_tuner_input, ppsz_tuner_input_text, NULL )
 223
 224     add_integer( "dshow-video-input",  -1, NULL, VIDEO_IN_TEXT,
 225                  VIDEO_IN_LONGTEXT, true )
 226
 227     add_integer( "dshow-video-output", -1, NULL, VIDEO_OUT_TEXT,
 228                  VIDEO_OUT_LONGTEXT, true )
 229
 230     add_integer( "dshow-audio-input",  -1, NULL, AUDIO_IN_TEXT,
 231                  AUDIO_IN_LONGTEXT, true )
 232
 233     add_integer( "dshow-audio-output", -1, NULL, AUDIO_OUT_TEXT,
 234                  AUDIO_OUT_LONGTEXT, true )
 235
 236     add_integer( "dshow-amtuner-mode", AMTUNER_MODE_TV, NULL,
 237                 AMTUNER_MODE_TEXT, AMTUNER_MODE_LONGTEXT, false)
 238         change_integer_list( pi_amtuner_mode, ppsz_amtuner_mode_text, NULL )
 239
 240     add_integer( "dshow-audio-channels", 0, NULL, AUDIO_CHANNELS_TEXT,
 241                  AUDIO_CHANNELS_LONGTEXT, true )
 242     add_integer( "dshow-audio-samplerate", 0, NULL, AUDIO_SAMPLERATE_TEXT,
 243                  AUDIO_SAMPLERATE_LONGTEXT, true )
 244     add_integer( "dshow-audio-bitspersample", 0, NULL, AUDIO_BITSPERSAMPLE_TEXT,
 245                  AUDIO_BITSPERSAMPLE_LONGTEXT, true )
 246
 247     add_shortcut( "dshow" )
 248     set_capability( "access_demux", 0 )
 249     set_callbacks( DemuxOpen, DemuxClose )
 250
 251     add_submodule ()
 252     set_description( N_("DirectShow input") )
 253     add_shortcut( "dshow" )
 254     set_capability( "access", 0 )
 255     set_callbacks( AccessOpen, AccessClose )
 256
 257 vlc_module_end ()
 258
 259 /*****************************************************************************
 260  * DirectShow elementary stream descriptor
 261  *****************************************************************************/
 262 typedef struct dshow_stream_t
 263 {
 264     string          devicename;
 265     IBaseFilter     *p_device_filter;
 266     CaptureFilter   *p_capture_filter;
 267     AM_MEDIA_TYPE   mt;
 268
 269     union
 270     {
 271       VIDEOINFOHEADER video;
 272       WAVEFORMATEX    audio;
 273
 274     } header;
 275
 276     int             i_fourcc;
 277     es_out_id_t     *p_es;
 278
 279     bool      b_pts;
 280
 281     deque<VLCMediaSample> samples_queue;
 282 } dshow_stream_t;
 283
 284 /*****************************************************************************
 285  * DirectShow utility functions
 286  *****************************************************************************/
 287 static void CreateDirectShowGraph( access_sys_t *p_sys )
 288 {
 289     p_sys->i_crossbar_route_depth = 0;
 290
 291     /* Create directshow filter graph */
 292     if( SUCCEEDED( CoCreateInstance( CLSID_FilterGraph, 0, CLSCTX_INPROC,
 293                        (REFIID)IID_IFilterGraph, (void **)&p_sys->p_graph) ) )
 294     {
 295         /* Create directshow capture graph builder if available */
 296         if( SUCCEEDED( CoCreateInstance( CLSID_CaptureGraphBuilder2, 0,
 297                          CLSCTX_INPROC, (REFIID)IID_ICaptureGraphBuilder2,
 298                          (void **)&p_sys->p_capture_graph_builder2 ) ) )
 299         {
 300             p_sys->p_capture_graph_builder2->
 301                 SetFiltergraph((IGraphBuilder *)p_sys->p_graph);
 302         }
 303
 304         p_sys->p_graph->QueryInterface( IID_IMediaControl,
 305                                         (void **)&p_sys->p_control );
 306     }
 307 }
 308
 309 static void DeleteDirectShowGraph( access_sys_t *p_sys )
 310 {
 311     DeleteCrossbarRoutes( p_sys );
 312
 313     /* Remove filters from graph */
 314     for( int i = 0; i < p_sys->i_streams; i++ )
 315     {
 316         p_sys->p_graph->RemoveFilter( p_sys->pp_streams[i]->p_capture_filter );
 317         p_sys->p_graph->RemoveFilter( p_sys->pp_streams[i]->p_device_filter );
 318         p_sys->pp_streams[i]->p_capture_filter->Release();
 319         p_sys->pp_streams[i]->p_device_filter->Release();
 320     }
 321
 322     /* Release directshow objects */
 323     if( p_sys->p_control )
 324     {
 325         p_sys->p_control->Release();
 326         p_sys->p_control = NULL;
 327     }
 328     if( p_sys->p_capture_graph_builder2 )
 329     {
 330         p_sys->p_capture_graph_builder2->Release();
 331         p_sys->p_capture_graph_builder2 = NULL;
 332     }
 333
 334     if( p_sys->p_graph )
 335     {
 336         p_sys->p_graph->Release();
 337         p_sys->p_graph = NULL;
 338     }
 339 }
 340
 341 /*****************************************************************************
 342  * CommonOpen: open direct show device
 343  *****************************************************************************/
 344 static int CommonOpen( vlc_object_t *p_this, access_sys_t *p_sys,
 345                        bool b_access_demux )
 346 {
 347     int i;
 348     char *psz_val;
 349
 350     /* Get/parse options and open device(s) */
 351     string vdevname, adevname;
 352     int i_width = 0, i_height = 0;
 353     vlc_fourcc_t i_chroma = 0;
 354     bool b_use_audio = true;
 355     bool b_use_video = true;
 356
 357     /* Initialize OLE/COM */
 358     CoInitialize( 0 );
 359
 360     var_Create( p_this, "dshow-config", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 361     var_Create( p_this, "dshow-tuner", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 362     psz_val = var_CreateGetString( p_this, "dshow-vdev" );
 363     if( psz_val )
 364     {
 365         msg_Dbg( p_this, "dshow-vdev: %s", psz_val ) ;
 366         /* skip none device */
 367         if ( strncasecmp( psz_val, "none", 4 ) != 0 )
 368             vdevname = string( psz_val );
 369         else
 370             b_use_video = false ;
 371     }
 372     free( psz_val );
 373
 374     psz_val = var_CreateGetString( p_this, "dshow-adev" );
 375     if( psz_val )
 376     {
 377         msg_Dbg( p_this, "dshow-adev: %s", psz_val ) ;
 378         /* skip none device */
 379         if ( strncasecmp( psz_val, "none", 4 ) != 0 )
 380             adevname = string( psz_val );
 381         else
 382             b_use_audio = false ;
 383     }
 384     free( psz_val );
 385
 386     static struct {const char *psz_size; int  i_width; int  i_height;} size_table[] =
 387     { { "subqcif", 128, 96 }, { "qsif", 160, 120 }, { "qcif", 176, 144 },
 388       { "sif", 320, 240 }, { "cif", 352, 288 }, { "d1", 640, 480 },
 389       { 0, 0, 0 },
 390     };
 391
 392     psz_val = var_CreateGetString( p_this, "dshow-size" );
 393     if( !EMPTY_STR(psz_val) )
 394     {
 395         for( i = 0; size_table[i].psz_size; i++ )
 396         {
 397             if( !strcmp( psz_val, size_table[i].psz_size ) )
 398             {
 399                 i_width = size_table[i].i_width;
 400                 i_height = size_table[i].i_height;
 401                 break;
 402             }
 403         }
 404         if( !size_table[i].psz_size ) /* Try to parse "WidthxHeight" */
 405         {
 406             char *psz_parser;
 407             i_width = strtol( psz_val, &psz_parser, 0 );
 408             if( *psz_parser == 'x' || *psz_parser == 'X')
 409             {
 410                 i_height = strtol( psz_parser + 1, &psz_parser, 0 );
 411             }
 412             msg_Dbg( p_this, "width x height %dx%d", i_width, i_height );
 413         }
 414     }
 415     free( psz_val );
 416
 417     psz_val = var_CreateGetString( p_this, "dshow-chroma" );
 418     i_chroma = vlc_fourcc_GetCodecFromString( UNKNOWN_ES, psz_val );
 419     p_sys->b_chroma = i_chroma != 0;
 420     free( psz_val );
 421
 422     var_Create( p_this, "dshow-fps", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
 423     var_Create( p_this, "dshow-tuner-channel",
 424                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 425     var_Create( p_this, "dshow-tuner-country",
 426                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 427     var_Create( p_this, "dshow-tuner-input",
 428                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 429
 430     var_Create( p_this, "dshow-amtuner-mode",
 431                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 432
 433     var_Create( p_this, "dshow-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 434
 435     var_Create( p_this, "dshow-video-input", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 436     var_Create( p_this, "dshow-audio-input", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 437     var_Create( p_this, "dshow-video-output", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 438     var_Create( p_this, "dshow-audio-output", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 439
 440     /* Initialize some data */
 441     p_sys->i_streams = 0;
 442     p_sys->pp_streams = NULL;
 443     p_sys->i_width = i_width;
 444     p_sys->i_height = i_height;
 445     p_sys->i_chroma = i_chroma;
 446
 447     p_sys->p_graph = NULL;
 448     p_sys->p_capture_graph_builder2 = NULL;
 449     p_sys->p_control = NULL;
 450
 451     /* Build directshow graph */
 452     CreateDirectShowGraph( p_sys );
 453
 454     vlc_mutex_init( &p_sys->lock );
 455     vlc_cond_init( &p_sys->wait );
 456
 457     if( !b_use_video && !b_use_audio )
 458     {
 459         dialog_Fatal( p_this, _("Capture failed"),
 460                         _("No video or audio device selected.") );
 461         return VLC_EGENERIC ;
 462     }
 463
 464     if( !b_use_video )
 465         msg_Dbg( p_this, "skipping video device" ) ;
 466     bool b_err_video = false ;
 467
 468     if( b_use_video && OpenDevice( p_this, p_sys, vdevname, 0 ) != VLC_SUCCESS )
 469     {
 470         msg_Err( p_this, "can't open video device");
 471         b_err_video = true ;
 472     }
 473
 474     if ( b_use_video && !b_err_video )
 475     {
 476         /* Check if we can handle the demuxing ourselves or need to spawn
 477          * a demuxer module */
 478         dshow_stream_t *p_stream = p_sys->pp_streams[p_sys->i_streams-1];
 479
 480         if( p_stream->mt.majortype == MEDIATYPE_Video )
 481         {
 482             if( /* Raw DV stream */
 483                 p_stream->i_fourcc == VLC_CODEC_DV ||
 484                 /* Raw MPEG video stream */
 485                 p_stream->i_fourcc == VLC_CODEC_MPGV )
 486             {
 487                 b_use_audio = false;
 488
 489                 if( b_access_demux )
 490                 {
 491                     /* Let the access (only) take care of that */
 492                     return VLC_EGENERIC;
 493                 }
 494             }
 495         }
 496
 497         if( p_stream->mt.majortype == MEDIATYPE_Stream )
 498         {
 499             b_use_audio = false;
 500
 501             if( b_access_demux )
 502             {
 503                 /* Let the access (only) take care of that */
 504                 return VLC_EGENERIC;
 505             }
 506
 507             if( var_GetBool( p_this, "dshow-tuner" ) )
 508             {
 509                 /* FIXME: we do MEDIATYPE_Stream here so we don't do
 510                  * it twice. */
 511                 ShowTunerProperties( p_this, p_sys->p_capture_graph_builder2,
 512                                      p_stream->p_device_filter, 0 );
 513             }
 514         }
 515     }
 516
 517     if( !b_use_audio )
 518         msg_Dbg( p_this, "skipping audio device") ;
 519
 520     bool b_err_audio = false ;
 521
 522     if( b_use_audio && OpenDevice( p_this, p_sys, adevname, 1 ) != VLC_SUCCESS )
 523     {
 524         msg_Err( p_this, "can't open audio device");
 525         b_err_audio = true ;
 526     }
 527
 528     if( ( b_use_video && b_err_video && b_use_audio && b_err_audio ) ||
 529         ( !b_use_video && b_use_audio && b_err_audio ) ||
 530         ( b_use_video && !b_use_audio && b_err_video ) )
 531     {
 532         msg_Err( p_this, "FATAL: could not open ANY device" ) ;
 533         dialog_Fatal( p_this,  _("Capture failed"),
 534                         _("VLC cannot open ANY capture device."
 535                           "Check the error log for details.") );
 536         return VLC_EGENERIC ;
 537     }
 538
 539     for( i = p_sys->i_crossbar_route_depth-1; i >= 0 ; --i )
 540     {
 541         int i_val = var_GetInteger( p_this, "dshow-video-input" );
 542         if( i_val >= 0 )
 543             p_sys->crossbar_routes[i].VideoInputIndex = i_val;
 544         i_val = var_GetInteger( p_this, "dshow-video-output" );
 545         if( i_val >= 0 )
 546             p_sys->crossbar_routes[i].VideoOutputIndex = i_val;
 547         i_val = var_GetInteger( p_this, "dshow-audio-input" );
 548         if( i_val >= 0 )
 549             p_sys->crossbar_routes[i].AudioInputIndex = i_val;
 550         i_val = var_GetInteger( p_this, "dshow-audio-output" );
 551         if( i_val >= 0 )
 552             p_sys->crossbar_routes[i].AudioOutputIndex = i_val;
 553
 554         IAMCrossbar *pXbar = p_sys->crossbar_routes[i].pXbar;
 555         LONG VideoInputIndex = p_sys->crossbar_routes[i].VideoInputIndex;
 556         LONG VideoOutputIndex = p_sys->crossbar_routes[i].VideoOutputIndex;
 557         LONG AudioInputIndex = p_sys->crossbar_routes[i].AudioInputIndex;
 558         LONG AudioOutputIndex = p_sys->crossbar_routes[i].AudioOutputIndex;
 559
 560         if( SUCCEEDED(pXbar->Route(VideoOutputIndex, VideoInputIndex)) )
 561         {
 562             msg_Dbg( p_this, "crossbar at depth %d, routed video "
 563                      "output %ld to video input %ld", i, VideoOutputIndex,
 564                      VideoInputIndex );
 565
 566             if( AudioOutputIndex != -1 && AudioInputIndex != -1 )
 567             {
 568                 if( SUCCEEDED( pXbar->Route(AudioOutputIndex,
 569                                             AudioInputIndex)) )
 570                 {
 571                     msg_Dbg(p_this, "crossbar at depth %d, routed audio "
 572                             "output %ld to audio input %ld", i,
 573                             AudioOutputIndex, AudioInputIndex );
 574                 }
 575             }
 576         }
 577         else
 578             msg_Err( p_this, "crossbar at depth %d could not route video "
 579                      "output %ld to input %ld", i, VideoOutputIndex, VideoInputIndex );
 580     }
 581
 582     /*
 583     ** Show properties pages from other filters in graph
 584     */
 585     if( var_GetBool( p_this, "dshow-config" ) )
 586     {
 587         for( i = p_sys->i_crossbar_route_depth-1; i >= 0 ; --i )
 588         {
 589             IAMCrossbar *pXbar = p_sys->crossbar_routes[i].pXbar;
 590             IBaseFilter *p_XF;
 591
 592             if( SUCCEEDED( pXbar->QueryInterface( IID_IBaseFilter,
 593                                                   (void **)&p_XF ) ) )
 594             {
 595                 ShowPropertyPage( p_XF );
 596                 p_XF->Release();
 597             }
 598         }
 599     }
 600
 601     /* Initialize some data */
 602     p_sys->i_current_stream = 0;
 603
 604     if( !p_sys->i_streams ) return VLC_EGENERIC;
 605
 606     return VLC_SUCCESS;
 607 }
 608
 609 /*****************************************************************************
 610  * DemuxOpen: open direct show device as an access_demux module
 611  *****************************************************************************/
 612 static int DemuxOpen( vlc_object_t *p_this )
 613 {
 614     demux_t      *p_demux = (demux_t *)p_this;
 615     access_sys_t *p_sys;
 616     int i;
 617
 618     p_sys = (access_sys_t*)calloc( 1, sizeof( access_sys_t ) );
 619     if( !p_sys )
 620         return VLC_ENOMEM;
 621     p_demux->p_sys = (demux_sys_t *)p_sys;
 622
 623     if( CommonOpen( p_this, p_sys, true ) != VLC_SUCCESS )
 624     {
 625         CommonClose( p_this, p_sys );
 626         return VLC_EGENERIC;
 627     }
 628
 629     /* Everything is ready. Let's rock baby */
 630     msg_Dbg( p_this, "Playing...");
 631     p_sys->p_control->Run();
 632
 633     p_demux->pf_demux   = Demux;
 634     p_demux->pf_control = DemuxControl;
 635     p_demux->info.i_update = 0;
 636     p_demux->info.i_title = 0;
 637     p_demux->info.i_seekpoint = 0;
 638
 639     for( i = 0; i < p_sys->i_streams; i++ )
 640     {
 641         dshow_stream_t *p_stream = p_sys->pp_streams[i];
 642         es_format_t fmt;
 643
 644         if( p_stream->mt.majortype == MEDIATYPE_Video )
 645         {
 646             es_format_Init( &fmt, VIDEO_ES, p_stream->i_fourcc );
 647
 648             fmt.video.i_width  = p_stream->header.video.bmiHeader.biWidth;
 649             fmt.video.i_height = p_stream->header.video.bmiHeader.biHeight;
 650             fmt.video.i_sar_num = 4 * fmt.video.i_height;
 651             fmt.video.i_sar_den = 4 * fmt.video.i_width;
 652
 653             if( !p_stream->header.video.bmiHeader.biCompression )
 654             {
 655                 /* RGB DIB are coded from bottom to top */
 656                 fmt.video.i_height = (unsigned int)(-(int)fmt.video.i_height);
 657             }
 658
 659             /* Setup rgb mask for RGB formats */
 660             if( p_stream->i_fourcc == VLC_CODEC_RGB24 )
 661             {
 662                 /* This is in BGR format */
 663                 fmt.video.i_bmask = 0x00ff0000;
 664                 fmt.video.i_gmask = 0x0000ff00;
 665                 fmt.video.i_rmask = 0x000000ff;
 666             }
 667
 668             if( p_stream->header.video.AvgTimePerFrame )
 669             {
 670                 fmt.video.i_frame_rate = 10000000;
 671                 fmt.video.i_frame_rate_base =
 672                     p_stream->header.video.AvgTimePerFrame;
 673             }
 674         }
 675         else if( p_stream->mt.majortype == MEDIATYPE_Audio )
 676         {
 677             es_format_Init( &fmt, AUDIO_ES, p_stream->i_fourcc );
 678
 679             fmt.audio.i_channels = p_stream->header.audio.nChannels;
 680             fmt.audio.i_rate = p_stream->header.audio.nSamplesPerSec;
 681             fmt.audio.i_bitspersample = p_stream->header.audio.wBitsPerSample;
 682             fmt.audio.i_blockalign = fmt.audio.i_channels *
 683                 fmt.audio.i_bitspersample / 8;
 684             fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate *
 685                 fmt.audio.i_bitspersample;
 686         }
 687
 688         p_stream->p_es = es_out_Add( p_demux->out, &fmt );
 689     }
 690
 691     return VLC_SUCCESS;
 692 }
 693
 694 /*****************************************************************************
 695  * AccessOpen: open direct show device as an access module
 696  *****************************************************************************/
 697 static int AccessOpen( vlc_object_t *p_this )
 698 {
 699     access_t     *p_access = (access_t*)p_this;
 700     access_sys_t *p_sys;
 701
 702     p_access->p_sys = p_sys = (access_sys_t*)calloc( 1, sizeof( access_sys_t ) );
 703     if( !p_sys )
 704         return VLC_ENOMEM;
 705
 706     if( CommonOpen( p_this, p_sys, false ) != VLC_SUCCESS )
 707     {
 708         CommonClose( p_this, p_sys );
 709         return VLC_EGENERIC;
 710     }
 711
 712     dshow_stream_t *p_stream = p_sys->pp_streams[0];
 713
 714     /* Check if we need to force demuxers */
 715     if( !p_access->psz_demux || !*p_access->psz_demux )
 716     {
 717         if( p_stream->i_fourcc == VLC_CODEC_DV )
 718         {
 719             free( p_access->psz_demux );
 720             p_access->psz_demux = strdup( "rawdv" );
 721         }
 722         else if( p_stream->i_fourcc == VLC_CODEC_MPGV )
 723         {
 724             free( p_access->psz_demux );
 725             p_access->psz_demux = strdup( "mpgv" );
 726         }
 727     }
 728
 729     /* Setup Access */
 730     p_access->pf_read = NULL;
 731     p_access->pf_block = ReadCompressed;
 732     p_access->pf_control = AccessControl;
 733     p_access->pf_seek = NULL;
 734     p_access->info.i_update = 0;
 735     p_access->info.i_size = 0;
 736     p_access->info.i_pos = 0;
 737     p_access->info.b_eof = false;
 738     p_access->info.i_title = 0;
 739     p_access->info.i_seekpoint = 0;
 740     p_access->p_sys = p_sys;
 741
 742     /* Everything is ready. Let's rock baby */
 743     msg_Dbg( p_this, "Playing...");
 744     p_sys->p_control->Run();
 745
 746     return VLC_SUCCESS;
 747 }
 748
 749 /*****************************************************************************
 750  * CommonClose: close device
 751  *****************************************************************************/
 752 static void CommonClose( vlc_object_t *p_this, access_sys_t *p_sys )
 753 {
 754     msg_Dbg( p_this, "releasing DirectShow");
 755
 756     DeleteDirectShowGraph( p_sys );
 757
 758     /* Uninitialize OLE/COM */
 759     CoUninitialize();
 760
 761     for( int i = 0; i < p_sys->i_streams; i++ ) delete p_sys->pp_streams[i];
 762     if( p_sys->i_streams ) free( p_sys->pp_streams );
 763
 764     vlc_mutex_destroy( &p_sys->lock );
 765     vlc_cond_destroy( &p_sys->wait );
 766
 767     free( p_sys );
 768 }
 769
 770 /*****************************************************************************
 771  * AccessClose: close device
 772  *****************************************************************************/
 773 static void AccessClose( vlc_object_t *p_this )
 774 {
 775     access_t     *p_access = (access_t *)p_this;
 776     access_sys_t *p_sys    = p_access->p_sys;
 777
 778     /* Stop capturing stuff */
 779     p_sys->p_control->Stop();
 780
 781     CommonClose( p_this, p_sys );
 782 }
 783
 784 /*****************************************************************************
 785  * DemuxClose: close device
 786  *****************************************************************************/
 787 static void DemuxClose( vlc_object_t *p_this )
 788 {
 789     demux_t      *p_demux = (demux_t *)p_this;
 790     access_sys_t *p_sys   = (access_sys_t *)p_demux->p_sys;
 791
 792     /* Stop capturing stuff */
 793     p_sys->p_control->Stop();
 794
 795     CommonClose( p_this, p_sys );
 796 }
 797
 798 /****************************************************************************
 799  * ConnectFilters
 800  ****************************************************************************/
 801 static bool ConnectFilters( vlc_object_t *p_this, access_sys_t *p_sys,
 802                             IBaseFilter *p_filter,
 803                             CaptureFilter *p_capture_filter )
 804 {
 805     CapturePin *p_input_pin = p_capture_filter->CustomGetPin();
 806
 807     AM_MEDIA_TYPE mediaType = p_input_pin->CustomGetMediaType();
 808
 809     if( p_sys->p_capture_graph_builder2 )
 810     {
 811         if( FAILED(p_sys->p_capture_graph_builder2->
 812                 RenderStream( &PIN_CATEGORY_CAPTURE, &mediaType.majortype,
 813                               p_filter, 0, (IBaseFilter *)p_capture_filter )) )
 814         {
 815             return false;
 816         }
 817
 818         // Sort out all the possible video inputs
 819         // The class needs to be given the capture filters ANALOGVIDEO input pin
 820         IEnumPins *pins = NULL;
 821         if( ( mediaType.majortype == MEDIATYPE_Video ||
 822               mediaType.majortype == MEDIATYPE_Stream ) &&
 823             SUCCEEDED(p_filter->EnumPins(&pins)) )
 824         {
 825             IPin        *pP = NULL;
 826             ULONG        n;
 827             PIN_INFO     pinInfo;
 828             BOOL         Found = FALSE;
 829             IKsPropertySet *pKs = NULL;
 830             GUID guid;
 831             DWORD dw;
 832
 833             while( !Found && ( S_OK == pins->Next(1, &pP, &n) ) )
 834             {
 835                 if( S_OK == pP->QueryPinInfo(&pinInfo) )
 836                 {
 837                     // is this pin an ANALOGVIDEOIN input pin?
 838                     if( pinInfo.dir == PINDIR_INPUT &&
 839                         pP->QueryInterface( IID_IKsPropertySet,
 840                                             (void **)&pKs ) == S_OK )
 841                     {
 842                         if( pKs->Get( AMPROPSETID_Pin,
 843                                       AMPROPERTY_PIN_CATEGORY, NULL, 0,
 844                                       &guid, sizeof(GUID), &dw ) == S_OK )
 845                         {
 846                             if( guid == PIN_CATEGORY_ANALOGVIDEOIN )
 847                             {
 848                                 // recursively search crossbar routes
 849                                 FindCrossbarRoutes( p_this, p_sys, pP, 0 );
 850                                 // found it
 851                                 Found = TRUE;
 852                             }
 853                         }
 854                         pKs->Release();
 855                     }
 856                     pinInfo.pFilter->Release();
 857                 }
 858                 pP->Release();
 859             }
 860             pins->Release();
 861             msg_Dbg( p_this, "ConnectFilters: graph_builder2 available.") ;
 862             if ( !Found )
 863                 msg_Warn( p_this, "ConnectFilters: No crossBar routes found (incobatible pin types)" ) ;
 864         }
 865         return true;
 866     }
 867     else
 868     {
 869         IEnumPins *p_enumpins;
 870         IPin *p_pin;
 871
 872         if( S_OK != p_filter->EnumPins( &p_enumpins ) ) return false;
 873
 874         while( S_OK == p_enumpins->Next( 1, &p_pin, NULL ) )
 875         {
 876             PIN_DIRECTION pin_dir;
 877             p_pin->QueryDirection( &pin_dir );
 878
 879             if( pin_dir == PINDIR_OUTPUT &&
 880                 p_sys->p_graph->ConnectDirect( p_pin, (IPin *)p_input_pin,
 881                                                0 ) == S_OK )
 882             {
 883                 p_pin->Release();
 884                 p_enumpins->Release();
 885                 return true;
 886             }
 887             p_pin->Release();
 888         }
 889
 890         p_enumpins->Release();
 891         return false;
 892     }
 893 }
 894
 895 /*
 896  * get fourcc priority from arbritary preference, the higher the better
 897  */
 898 static int GetFourCCPriority( int i_fourcc )
 899 {
 900     switch( i_fourcc )
 901     {
 902     case VLC_CODEC_I420:
 903     case VLC_CODEC_FL32:
 904         return 9;
 905     case VLC_CODEC_YV12:
 906     case VLC_FOURCC('a','r','a','w'):
 907         return 8;
 908     case VLC_CODEC_RGB24:
 909         return 7;
 910     case VLC_CODEC_YUYV:
 911     case VLC_CODEC_RGB32:
 912     case VLC_CODEC_RGBA:
 913         return 6;
 914     }
 915
 916     return 0;
 917 }
 918
 919 #define MAX_MEDIA_TYPES 32
 920
 921 static int OpenDevice( vlc_object_t *p_this, access_sys_t *p_sys,
 922                        string devicename, bool b_audio )
 923 {
 924     /* See if device is already opened */
 925     for( int i = 0; i < p_sys->i_streams; i++ )
 926     {
 927         if( devicename.size() &&
 928             p_sys->pp_streams[i]->devicename == devicename )
 929         {
 930             /* Already opened */
 931             return VLC_SUCCESS;
 932         }
 933     }
 934
 935     list<string> list_devices;
 936
 937     /* Enumerate devices and display their names */
 938     FindCaptureDevice( p_this, NULL, &list_devices, b_audio );
 939     if( !list_devices.size() )
 940         return VLC_EGENERIC;
 941
 942     list<string>::iterator iter;
 943     for( iter = list_devices.begin(); iter != list_devices.end(); iter++ )
 944         msg_Dbg( p_this, "found device: %s", iter->c_str() );
 945
 946     /* If no device name was specified, pick the 1st one */
 947     if( devicename.size() == 0 )
 948     {
 949         /* When none selected */
 950         devicename = *list_devices.begin();
 951         msg_Dbg( p_this, "asking for default device: %s", devicename.c_str() ) ;
 952     }
 953     else
 954         msg_Dbg( p_this, "asking for device: %s", devicename.c_str() ) ;
 955     // Use the system device enumerator and class enumerator to find
 956     // a capture/preview device, such as a desktop USB video camera.
 957     IBaseFilter *p_device_filter =
 958         FindCaptureDevice( p_this, &devicename, NULL, b_audio );
 959
 960     if( p_device_filter )
 961         msg_Dbg( p_this, "using device: %s", devicename.c_str() );
 962     else
 963     {
 964         msg_Err( p_this, "can't use device: %s, unsupported device type",
 965                  devicename.c_str() );
 966         dialog_Fatal( p_this, _("Capture failed"),
 967                         _("VLC cannot use the device \"%s\", because its "
 968                           "type is not supported."), devicename.c_str() );
 969         return VLC_EGENERIC;
 970     }
 971
 972     // Retreive acceptable media types supported by device
 973     AM_MEDIA_TYPE media_types[MAX_MEDIA_TYPES];
 974     size_t media_count =
 975         EnumDeviceCaps( p_this, p_device_filter, b_audio ? 0 : p_sys->i_chroma,
 976                         p_sys->i_width, p_sys->i_height,
 977       b_audio ? var_CreateGetInteger( p_this, "dshow-audio-channels" ) : 0,
 978       b_audio ? var_CreateGetInteger( p_this, "dshow-audio-samplerate" ) : 0,
 979       b_audio ? var_CreateGetInteger( p_this, "dshow-audio-bitspersample" ) : 0,
 980       media_types, MAX_MEDIA_TYPES );
 981
 982     AM_MEDIA_TYPE *mt = NULL;
 983
 984     if( media_count > 0 )
 985     {
 986         mt = (AM_MEDIA_TYPE *)CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE) * media_count);
 987
 988         // Order and copy returned media types according to arbitrary
 989         // fourcc priority
 990         for( size_t c = 0; c < media_count; c++ )
 991         {
 992             int slot_priority =
 993                 GetFourCCPriority(GetFourCCFromMediaType(media_types[c]));
 994             size_t slot_copy = c;
 995             for( size_t d = c+1; d < media_count; d++ )
 996             {
 997                 int priority =
 998                     GetFourCCPriority(GetFourCCFromMediaType(media_types[d]));
 999                 if( priority > slot_priority )
1000                 {
1001                     slot_priority = priority;
1002                     slot_copy = d;
1003                 }
1004             }
1005             if( slot_copy != c )
1006             {
1007                 mt[c] = media_types[slot_copy];
1008                 media_types[slot_copy] = media_types[c];
1009             }
1010             else
1011             {
1012                 mt[c] = media_types[c];
1013             }
1014         }
1015     }
1016     else {
1017         /* capture device */
1018         msg_Err( p_this, "capture device '%s' does not support required parameters !", devicename.c_str() );
1019         dialog_Fatal( p_this, _("Capture failed"),
1020                         _("The capture device \"%s\" does not support the "
1021                           "required parameters."), devicename.c_str() );
1022         p_device_filter->Release();
1023         return VLC_EGENERIC;
1024     }
1025
1026     /* Create and add our capture filter */
1027     CaptureFilter *p_capture_filter =
1028         new CaptureFilter( p_this, p_sys, mt, media_count );
1029     p_sys->p_graph->AddFilter( p_capture_filter, 0 );
1030
1031     /* Add the device filter to the graph (seems necessary with VfW before
1032      * accessing pin attributes). */
1033     p_sys->p_graph->AddFilter( p_device_filter, 0 );
1034
1035     /* Attempt to connect one of this device's capture output pins */
1036     msg_Dbg( p_this, "connecting filters" );
1037     if( ConnectFilters( p_this, p_sys, p_device_filter, p_capture_filter ) )
1038     {
1039         /* Success */
1040         msg_Dbg( p_this, "filters connected successfully !" );
1041
1042         dshow_stream_t dshow_stream;
1043         dshow_stream.b_pts = false;
1044         dshow_stream.p_es = 0;
1045         dshow_stream.mt =
1046             p_capture_filter->CustomGetPin()->CustomGetMediaType();
1047
1048         /* Show Device properties. Done here so the VLC stream is setup with
1049          * the proper parameters. */
1050         if( var_GetBool( p_this, "dshow-config" ) )
1051         {
1052             ShowDeviceProperties( p_this, p_sys->p_capture_graph_builder2,
1053                                   p_device_filter, b_audio );
1054         }
1055
1056         ConfigTuner( p_this, p_sys->p_capture_graph_builder2,
1057                      p_device_filter );
1058
1059         if( var_GetBool( p_this, "dshow-tuner" ) &&
1060             dshow_stream.mt.majortype != MEDIATYPE_Stream )
1061         {
1062             /* FIXME: we do MEDIATYPE_Stream later so we don't do it twice. */
1063             ShowTunerProperties( p_this, p_sys->p_capture_graph_builder2,
1064                                  p_device_filter, b_audio );
1065         }
1066
1067         dshow_stream.mt =
1068             p_capture_filter->CustomGetPin()->CustomGetMediaType();
1069
1070         dshow_stream.i_fourcc = GetFourCCFromMediaType( dshow_stream.mt );
1071         if( dshow_stream.i_fourcc )
1072         {
1073             if( dshow_stream.mt.majortype == MEDIATYPE_Video )
1074             {
1075                 dshow_stream.header.video =
1076                     *(VIDEOINFOHEADER *)dshow_stream.mt.pbFormat;
1077                 msg_Dbg( p_this, "MEDIATYPE_Video" );
1078                 msg_Dbg( p_this, "selected video pin accepts format: %4.4s",
1079                          (char *)&dshow_stream.i_fourcc);
1080             }
1081             else if( dshow_stream.mt.majortype == MEDIATYPE_Audio )
1082             {
1083                 dshow_stream.header.audio =
1084                     *(WAVEFORMATEX *)dshow_stream.mt.pbFormat;
1085                 msg_Dbg( p_this, "MEDIATYPE_Audio" );
1086                 msg_Dbg( p_this, "selected audio pin accepts format: %4.4s",
1087                          (char *)&dshow_stream.i_fourcc);
1088             }
1089             else if( dshow_stream.mt.majortype == MEDIATYPE_Stream )
1090             {
1091                 msg_Dbg( p_this, "MEDIATYPE_Stream" );
1092                 msg_Dbg( p_this, "selected stream pin accepts format: %4.4s",
1093                          (char *)&dshow_stream.i_fourcc);
1094             }
1095             else
1096             {
1097                 msg_Dbg( p_this, "unknown stream majortype" );
1098                 goto fail;
1099             }
1100
1101             /* Add directshow elementary stream to our list */
1102             dshow_stream.p_device_filter = p_device_filter;
1103             dshow_stream.p_capture_filter = p_capture_filter;
1104
1105             p_sys->pp_streams = (dshow_stream_t **)xrealloc( p_sys->pp_streams,
1106                           sizeof(dshow_stream_t *) * (p_sys->i_streams + 1) );
1107             p_sys->pp_streams[p_sys->i_streams] = new dshow_stream_t;
1108             *p_sys->pp_streams[p_sys->i_streams++] = dshow_stream;
1109
1110             return VLC_SUCCESS;
1111         }
1112     }
1113
1114  fail:
1115     /* Remove filters from graph */
1116     p_sys->p_graph->RemoveFilter( p_device_filter );
1117     p_sys->p_graph->RemoveFilter( p_capture_filter );
1118
1119     /* Release objects */
1120     p_device_filter->Release();
1121     p_capture_filter->Release();
1122
1123     return VLC_EGENERIC;
1124 }
1125
1126 /* FindCaptureDevices:: This Function had two purposes :
1127     Returns the list of capture devices when p_listdevices != NULL
1128     Creates an IBaseFilter when p_devicename corresponds to an existing devname
1129    These actions *may* be requested whith a single call.
1130 */
1131 static IBaseFilter *
1132 FindCaptureDevice( vlc_object_t *p_this, string *p_devicename,
1133                    list<string> *p_listdevices, bool b_audio )
1134 {
1135     IBaseFilter *p_base_filter = NULL;
1136     IMoniker *p_moniker = NULL;
1137     ULONG i_fetched;
1138     HRESULT hr;
1139     list<string> devicelist;
1140
1141     /* Create the system device enumerator */
1142     ICreateDevEnum *p_dev_enum = NULL;
1143
1144     hr = CoCreateInstance( CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC,
1145                            IID_ICreateDevEnum, (void **)&p_dev_enum );
1146     if( FAILED(hr) )
1147     {
1148         msg_Err( p_this, "failed to create the device enumerator (0x%lx)", hr);
1149         return NULL;
1150     }
1151
1152     /* Create an enumerator for the video capture devices */
1153     IEnumMoniker *p_class_enum = NULL;
1154     if( !b_audio )
1155         hr = p_dev_enum->CreateClassEnumerator( CLSID_VideoInputDeviceCategory,
1156                                                 &p_class_enum, 0 );
1157     else
1158         hr = p_dev_enum->CreateClassEnumerator( CLSID_AudioInputDeviceCategory,
1159                                                 &p_class_enum, 0 );
1160     p_dev_enum->Release();
1161     if( FAILED(hr) )
1162     {
1163         msg_Err( p_this, "failed to create the class enumerator (0x%lx)", hr );
1164         return NULL;
1165     }
1166
1167     /* If there are no enumerators for the requested type, then
1168      * CreateClassEnumerator will succeed, but p_class_enum will be NULL */
1169     if( p_class_enum == NULL )
1170     {
1171         msg_Err( p_this, "no %s capture device was detected", ( b_audio ? "audio" : "video" ) );
1172         return NULL;
1173     }
1174
1175     /* Enumerate the devices */
1176
1177     /* Note that if the Next() call succeeds but there are no monikers,
1178      * it will return S_FALSE (which is not a failure). Therefore, we check
1179      * that the return code is S_OK instead of using SUCCEEDED() macro. */
1180
1181     while( p_class_enum->Next( 1, &p_moniker, &i_fetched ) == S_OK )
1182     {
1183         /* Getting the property page to get the device name */
1184         IPropertyBag *p_bag;
1185         hr = p_moniker->BindToStorage( 0, 0, IID_IPropertyBag,
1186                                        (void **)&p_bag );
1187         if( SUCCEEDED(hr) )
1188         {
1189             VARIANT var;
1190             var.vt = VT_BSTR;
1191             hr = p_bag->Read( L"FriendlyName", &var, NULL );
1192             p_bag->Release();
1193             if( SUCCEEDED(hr) )
1194             {
1195                 char *p_buf = FromWide( var.bstrVal );
1196                 string devname = string(p_buf);
1197                 free( p_buf) ;
1198
1199                 int dup = 0;
1200                 /* find out if this name is already used by a previously found device */
1201                 list<string>::const_iterator iter = devicelist.begin();
1202                 list<string>::const_iterator end = devicelist.end();
1203                 string ordevname = devname ;
1204                 while ( iter != end )
1205                 {
1206                     if( 0 == (*iter).compare( devname ) )
1207                     { /* devname is on the list. Try another name with sequence
1208                          number apended and then rescan until a unique entry is found*/
1209                          char seq[16];
1210                          snprintf(seq, 16, " #%d", ++dup);
1211                          devname = ordevname + seq;
1212                          iter = devicelist.begin();
1213                     }
1214                     else
1215                          ++iter;
1216                 }
1217                 devicelist.push_back( devname );
1218
1219                 if( p_devicename && *p_devicename == devname )
1220                 {
1221                     msg_Dbg( p_this, "asked for %s, binding to %s", p_devicename->c_str() , devname.c_str() ) ;
1222                     /* NULL possibly means we don't need BindMoniker BindCtx ?? */
1223                     hr = p_moniker->BindToObject( NULL, 0, IID_IBaseFilter,
1224                                                   (void **)&p_base_filter );
1225                     if( FAILED(hr) )
1226                     {
1227                         msg_Err( p_this, "couldn't bind moniker to filter "
1228                                  "object (0x%lx)", hr );
1229                         p_moniker->Release();
1230                         p_class_enum->Release();
1231                         return NULL;
1232                     }
1233                     p_moniker->Release();
1234                     p_class_enum->Release();
1235                     return p_base_filter;
1236                 }
1237             }
1238         }
1239
1240         p_moniker->Release();
1241     }
1242
1243     p_class_enum->Release();
1244
1245     if( p_listdevices ) {
1246     devicelist.sort();
1247     *p_listdevices = devicelist;
1248     }
1249     return NULL;
1250 }
1251
1252 static size_t EnumDeviceCaps( vlc_object_t *p_this, IBaseFilter *p_filter,
1253                               int i_fourcc, int i_width, int i_height,
1254                               int i_channels, int i_samplespersec,
1255                               int i_bitspersample, AM_MEDIA_TYPE *mt,
1256                               size_t mt_max )
1257 {
1258     IEnumPins *p_enumpins;
1259     IPin *p_output_pin;
1260     IEnumMediaTypes *p_enummt;
1261     size_t mt_count = 0;
1262
1263     LONGLONG i_AvgTimePerFrame = 0;
1264     float r_fps = var_GetFloat( p_this, "dshow-fps" );
1265     if( r_fps )
1266         i_AvgTimePerFrame = 10000000000LL/(LONGLONG)(r_fps*1000.0f);
1267
1268     if( FAILED(p_filter->EnumPins( &p_enumpins )) )
1269     {
1270         msg_Dbg( p_this, "EnumDeviceCaps failed: no pin enumeration !");
1271         return 0;
1272     }
1273
1274     while( S_OK == p_enumpins->Next( 1, &p_output_pin, NULL ) )
1275     {
1276         PIN_INFO info;
1277
1278         if( S_OK == p_output_pin->QueryPinInfo( &info ) )
1279         {
1280             msg_Dbg( p_this, "EnumDeviceCaps: %s pin: %S",
1281                      info.dir == PINDIR_INPUT ? "input" : "output",
1282                      info.achName );
1283             if( info.pFilter ) info.pFilter->Release();
1284         }
1285
1286         p_output_pin->Release();
1287     }
1288
1289     p_enumpins->Reset();
1290
1291     while( !mt_count && p_enumpins->Next( 1, &p_output_pin, NULL ) == S_OK )
1292     {
1293         PIN_INFO info;
1294
1295         if( S_OK == p_output_pin->QueryPinInfo( &info ) )
1296         {
1297             if( info.pFilter ) info.pFilter->Release();
1298             if( info.dir == PINDIR_INPUT )
1299             {
1300                 p_output_pin->Release();
1301                 continue;
1302             }
1303             msg_Dbg( p_this, "EnumDeviceCaps: trying pin %S", info.achName );
1304         }
1305
1306         AM_MEDIA_TYPE *p_mt;
1307
1308         /*
1309         ** Configure pin with a default compatible media if possible
1310         */
1311
1312         IAMStreamConfig *pSC;
1313         if( SUCCEEDED(p_output_pin->QueryInterface( IID_IAMStreamConfig,
1314                                             (void **)&pSC )) )
1315         {
1316             int piCount, piSize;
1317             if( SUCCEEDED(pSC->GetNumberOfCapabilities(&piCount, &piSize)) )
1318             {
1319                 BYTE *pSCC= (BYTE *)CoTaskMemAlloc(piSize);
1320                 if( NULL != pSCC )
1321                 {
1322                     int i_priority = -1;
1323                     for( int i=0; i<piCount; ++i )
1324                     {
1325                         if( SUCCEEDED(pSC->GetStreamCaps(i, &p_mt, pSCC)) )
1326                         {
1327                             int i_current_fourcc = GetFourCCFromMediaType( *p_mt );
1328                             int i_current_priority = GetFourCCPriority(i_current_fourcc);
1329
1330                             if( (i_fourcc && (i_current_fourcc != i_fourcc))
1331                              || (i_priority > i_current_priority) )
1332                             {
1333                                 // unwanted chroma, try next media type
1334                                 FreeMediaType( *p_mt );
1335                                 CoTaskMemFree( (PVOID)p_mt );
1336                                 continue;
1337                             }
1338
1339                             if( MEDIATYPE_Video == p_mt->majortype
1340                                     && FORMAT_VideoInfo == p_mt->formattype )
1341                             {
1342                                 VIDEO_STREAM_CONFIG_CAPS *pVSCC = reinterpret_cast<VIDEO_STREAM_CONFIG_CAPS*>(pSCC);
1343                                 VIDEOINFOHEADER *pVih = reinterpret_cast<VIDEOINFOHEADER*>(p_mt->pbFormat);
1344
1345                                 if( i_AvgTimePerFrame )
1346                                 {
1347                                     if( pVSCC->MinFrameInterval > i_AvgTimePerFrame
1348                                       || i_AvgTimePerFrame > pVSCC->MaxFrameInterval )
1349                                     {
1350                                         // required frame rate not compatible, try next media type
1351                                         FreeMediaType( *p_mt );
1352                                         CoTaskMemFree( (PVOID)p_mt );
1353                                         continue;
1354                                     }
1355                                     pVih->AvgTimePerFrame = i_AvgTimePerFrame;
1356                                 }
1357
1358                                 if( i_width )
1359                                 {
1360                                     if((   !pVSCC->OutputGranularityX
1361                                            && i_width != pVSCC->MinOutputSize.cx
1362                                            && i_width != pVSCC->MaxOutputSize.cx)
1363                                        ||
1364                                        (   pVSCC->OutputGranularityX
1365                                            && ((i_width % pVSCC->OutputGranularityX)
1366                                                || pVSCC->MinOutputSize.cx > i_width
1367                                                || i_width > pVSCC->MaxOutputSize.cx )))
1368                                     {
1369                                         // required width not compatible, try next media type
1370                                         FreeMediaType( *p_mt );
1371                                         CoTaskMemFree( (PVOID)p_mt );
1372                                         continue;
1373                                     }
1374                                     pVih->bmiHeader.biWidth = i_width;
1375                                 }
1376
1377                                 if( i_height )
1378                                 {
1379                                     if((   !pVSCC->OutputGranularityY
1380                                            && i_height != pVSCC->MinOutputSize.cy
1381                                            && i_height != pVSCC->MaxOutputSize.cy)
1382                                        ||
1383                                        (   pVSCC->OutputGranularityY
1384                                            && ((i_height % pVSCC->OutputGranularityY)
1385                                                || pVSCC->MinOutputSize.cy > i_height
1386                                                || i_height > pVSCC->MaxOutputSize.cy )))
1387                                     {
1388                                         // required height not compatible, try next media type
1389                                         FreeMediaType( *p_mt );
1390                                         CoTaskMemFree( (PVOID)p_mt );
1391                                         continue;
1392                                     }
1393                                     pVih->bmiHeader.biHeight = i_height;
1394                                 }
1395
1396                                 // Set the sample size and image size.
1397                                 // (Round the image width up to a DWORD boundary.)
1398                                 p_mt->lSampleSize = pVih->bmiHeader.biSizeImage =
1399                                     ((pVih->bmiHeader.biWidth + 3) & ~3) *
1400                                     pVih->bmiHeader.biHeight * (pVih->bmiHeader.biBitCount>>3);
1401
1402                                 // no cropping, use full video input buffer
1403                                 memset(&(pVih->rcSource), 0, sizeof(RECT));
1404                                 memset(&(pVih->rcTarget), 0, sizeof(RECT));
1405
1406                                 // select this format as default
1407                                 if( SUCCEEDED( pSC->SetFormat(p_mt) ) )
1408                                 {
1409                                     i_priority = i_current_priority;
1410                                     if( i_fourcc )
1411                                         // no need to check any more media types
1412                                         i = piCount;
1413                                 }
1414                             }
1415                             else if( p_mt->majortype == MEDIATYPE_Audio
1416                                     && p_mt->formattype == FORMAT_WaveFormatEx )
1417                             {
1418                                 AUDIO_STREAM_CONFIG_CAPS *pASCC = reinterpret_cast<AUDIO_STREAM_CONFIG_CAPS*>(pSCC);
1419                                 WAVEFORMATEX *pWfx = reinterpret_cast<WAVEFORMATEX*>(p_mt->pbFormat);
1420
1421                                 if( i_current_fourcc && (WAVE_FORMAT_PCM == pWfx->wFormatTag) )
1422                                 {
1423                                     int val = i_channels;
1424                                     if( ! val )
1425                                         val = 2;
1426
1427                                     if( (   !pASCC->ChannelsGranularity
1428                                             && (unsigned int)val != pASCC->MinimumChannels
1429                                             && (unsigned int)val != pASCC->MaximumChannels)
1430                                         ||
1431                                         (   pASCC->ChannelsGranularity
1432                                             && ((val % pASCC->ChannelsGranularity)
1433                                                 || (unsigned int)val < pASCC->MinimumChannels
1434                                                 || (unsigned int)val > pASCC->MaximumChannels)))
1435                                     {
1436                                         // required number channels not available, try next media type
1437                                         FreeMediaType( *p_mt );
1438                                         CoTaskMemFree( (PVOID)p_mt );
1439                                         continue;
1440                                     }
1441                                     pWfx->nChannels = val;
1442
1443                                     val = i_samplespersec;
1444                                     if( ! val )
1445                                         val = 44100;
1446
1447                                     if( (   !pASCC->SampleFrequencyGranularity
1448                                             && (unsigned int)val != pASCC->MinimumSampleFrequency
1449                                             && (unsigned int)val != pASCC->MaximumSampleFrequency)
1450                                         ||
1451                                         (   pASCC->SampleFrequencyGranularity
1452                                             && ((val % pASCC->SampleFrequencyGranularity)
1453                                                 || (unsigned int)val < pASCC->MinimumSampleFrequency
1454                                                 || (unsigned int)val > pASCC->MaximumSampleFrequency )))
1455                                     {
1456                                         // required sampling rate not available, try next media type
1457                                         FreeMediaType( *p_mt );
1458                                         CoTaskMemFree( (PVOID)p_mt );
1459                                         continue;
1460                                     }
1461                                     pWfx->nSamplesPerSec = val;
1462
1463                                     val = i_bitspersample;
1464                                     if( ! val )
1465                                     {
1466                                         if( VLC_CODEC_FL32 == i_current_fourcc )
1467                                             val = 32;
1468                                         else
1469                                             val = 16;
1470                                     }
1471
1472                                     if( (   !pASCC->BitsPerSampleGranularity
1473                                             && (unsigned int)val != pASCC->MinimumBitsPerSample
1474                                             &&  (unsigned int)val != pASCC->MaximumBitsPerSample )
1475                                         ||
1476                                         (   pASCC->BitsPerSampleGranularity
1477                                             && ((val % pASCC->BitsPerSampleGranularity)
1478                                                 || (unsigned int)val < pASCC->MinimumBitsPerSample
1479                                                 || (unsigned int)val > pASCC->MaximumBitsPerSample )))
1480                                     {
1481                                         // required sample size not available, try next media type
1482                                         FreeMediaType( *p_mt );
1483                                         CoTaskMemFree( (PVOID)p_mt );
1484                                         continue;
1485                                     }
1486
1487                                     pWfx->wBitsPerSample = val;
1488                                     pWfx->nBlockAlign = (pWfx->wBitsPerSample * pWfx->nChannels)/8;
1489                                     pWfx->nAvgBytesPerSec = pWfx->nSamplesPerSec * pWfx->nBlockAlign;
1490
1491                                     // select this format as default
1492                                     if( SUCCEEDED( pSC->SetFormat(p_mt) ) )
1493                                     {
1494                                         i_priority = i_current_priority;
1495                                     }
1496                                 }
1497                             }
1498                             FreeMediaType( *p_mt );
1499                             CoTaskMemFree( (PVOID)p_mt );
1500                         }
1501                     }
1502                     CoTaskMemFree( (LPVOID)pSCC );
1503                     if( i_priority >= 0 )
1504                         msg_Dbg( p_this, "EnumDeviceCaps: input pin default format configured");
1505                 }
1506             }
1507             pSC->Release();
1508         }
1509
1510         /*
1511         ** Probe pin for available medias (may be a previously configured one)
1512         */
1513
1514         if( FAILED( p_output_pin->EnumMediaTypes( &p_enummt ) ) )
1515         {
1516             p_output_pin->Release();
1517             continue;
1518         }
1519
1520         while( p_enummt->Next( 1, &p_mt, NULL ) == S_OK )
1521         {
1522             int i_current_fourcc = GetFourCCFromMediaType( *p_mt );
1523             if( i_current_fourcc && p_mt->majortype == MEDIATYPE_Video
1524                 && p_mt->formattype == FORMAT_VideoInfo )
1525             {
1526                 int i_current_width = ((VIDEOINFOHEADER *)p_mt->pbFormat)->bmiHeader.biWidth;
1527                 int i_current_height = ((VIDEOINFOHEADER *)p_mt->pbFormat)->bmiHeader.biHeight;
1528                 LONGLONG i_current_atpf = ((VIDEOINFOHEADER *)p_mt->pbFormat)->AvgTimePerFrame;
1529
1530                 if( i_current_height < 0 )
1531                     i_current_height = -i_current_height;
1532
1533                 msg_Dbg( p_this, "EnumDeviceCaps: input pin "
1534                          "accepts chroma: %4.4s, width:%i, height:%i, fps:%f",
1535                          (char *)&i_current_fourcc, i_current_width,
1536                          i_current_height, (10000000.0f/((float)i_current_atpf)) );
1537
1538                 if( ( !i_fourcc || i_fourcc == i_current_fourcc ) &&
1539                     ( !i_width || i_width == i_current_width ) &&
1540                     ( !i_height || i_height == i_current_height ) &&
1541                     ( !i_AvgTimePerFrame || i_AvgTimePerFrame == i_current_atpf ) &&
1542                     mt_count < mt_max )
1543                 {
1544                     /* Pick match */
1545                     mt[mt_count++] = *p_mt;
1546                 }
1547                 else FreeMediaType( *p_mt );
1548             }
1549             else if( i_current_fourcc && p_mt->majortype == MEDIATYPE_Audio
1550                     && p_mt->formattype == FORMAT_WaveFormatEx)
1551             {
1552                 int i_current_channels =
1553                     ((WAVEFORMATEX *)p_mt->pbFormat)->nChannels;
1554                 int i_current_samplespersec =
1555                     ((WAVEFORMATEX *)p_mt->pbFormat)->nSamplesPerSec;
1556                 int i_current_bitspersample =
1557                     ((WAVEFORMATEX *)p_mt->pbFormat)->wBitsPerSample;
1558
1559                 msg_Dbg( p_this, "EnumDeviceCaps: input pin "
1560                          "accepts format: %4.4s, channels:%i, "
1561                          "samples/sec:%i bits/sample:%i",
1562                          (char *)&i_current_fourcc, i_current_channels,
1563                          i_current_samplespersec, i_current_bitspersample);
1564
1565                 if( (!i_channels || i_channels == i_current_channels) &&
1566                     (!i_samplespersec ||
1567                      i_samplespersec == i_current_samplespersec) &&
1568                     (!i_bitspersample ||
1569                      i_bitspersample == i_current_bitspersample) &&
1570                     mt_count < mt_max )
1571                 {
1572                     /* Pick  match */
1573                     mt[mt_count++] = *p_mt;
1574
1575                     /* Setup a few properties like the audio latency */
1576                     IAMBufferNegotiation *p_ambuf;
1577                     if( SUCCEEDED( p_output_pin->QueryInterface(
1578                           IID_IAMBufferNegotiation, (void **)&p_ambuf ) ) )
1579                     {
1580                         ALLOCATOR_PROPERTIES AllocProp;
1581                         AllocProp.cbAlign = -1;
1582
1583                         /* 100 ms of latency */
1584                         AllocProp.cbBuffer = i_current_channels *
1585                           i_current_samplespersec *
1586                           i_current_bitspersample / 8 / 10;
1587
1588                         AllocProp.cbPrefix = -1;
1589                         AllocProp.cBuffers = -1;
1590                         p_ambuf->SuggestAllocatorProperties( &AllocProp );
1591                         p_ambuf->Release();
1592                     }
1593                 }
1594                 else FreeMediaType( *p_mt );
1595             }
1596             else if( i_current_fourcc && p_mt->majortype == MEDIATYPE_Stream )
1597             {
1598                 msg_Dbg( p_this, "EnumDeviceCaps: input pin "
1599                          "accepts stream format: %4.4s",
1600                          (char *)&i_current_fourcc );
1601
1602                 if( ( !i_fourcc || i_fourcc == i_current_fourcc ) &&
1603                     mt_count < mt_max )
1604                 {
1605                     /* Pick match */
1606                     mt[mt_count++] = *p_mt;
1607                     i_fourcc = i_current_fourcc;
1608                 }
1609                 else FreeMediaType( *p_mt );
1610             }
1611             else
1612             {
1613                 const char * psz_type = "unknown";
1614                 if( p_mt->majortype == MEDIATYPE_Video ) psz_type = "video";
1615                 if( p_mt->majortype == MEDIATYPE_Audio ) psz_type = "audio";
1616                 if( p_mt->majortype == MEDIATYPE_Stream ) psz_type = "stream";
1617                 msg_Dbg( p_this, "EnumDeviceCaps: input pin media: unsupported format "
1618                          "(%s %4.4s)", psz_type, (char *)&p_mt->subtype );
1619
1620                 FreeMediaType( *p_mt );
1621             }
1622             CoTaskMemFree( (PVOID)p_mt );
1623         }
1624
1625         if( !mt_count && p_enummt->Reset() == S_OK )
1626         {
1627             // VLC did not find any supported MEDIATYPE for this output pin.
1628             // However the graph builder might insert converter filters in
1629             // the graph if we use a different codec in VLC filter input pin.
1630             // however, in order to avoid nasty surprises, make use of this
1631             // facility only for known unsupported codecs.
1632
1633             while( !mt_count && p_enummt->Next( 1, &p_mt, NULL ) == S_OK )
1634             {
1635                 // the first four bytes of subtype GUID contains the codec FOURCC
1636                 const char *pfcc = (char *)&p_mt->subtype;
1637                 int i_current_fourcc = VLC_FOURCC(pfcc[0], pfcc[1], pfcc[2], pfcc[3]);
1638                 if( VLC_FOURCC('H','C','W','2') == i_current_fourcc
1639                  && p_mt->majortype == MEDIATYPE_Video )
1640                 {
1641                     // output format for 'Hauppauge WinTV PVR PCI II Capture'
1642                     // try I420 as an input format
1643                     i_current_fourcc = VLC_CODEC_I420;
1644                     if( !i_fourcc || i_fourcc == i_current_fourcc )
1645                     {
1646                         // return alternative media type
1647                         AM_MEDIA_TYPE mtr;
1648                         VIDEOINFOHEADER vh;
1649
1650                         mtr.majortype            = MEDIATYPE_Video;
1651                         mtr.subtype              = MEDIASUBTYPE_I420;
1652                         mtr.bFixedSizeSamples    = TRUE;
1653                         mtr.bTemporalCompression = FALSE;
1654                         mtr.pUnk                 = NULL;
1655                         mtr.formattype           = FORMAT_VideoInfo;
1656                         mtr.cbFormat             = sizeof(vh);
1657                         mtr.pbFormat             = (BYTE *)&vh;
1658
1659                         memset(&vh, 0, sizeof(vh));
1660
1661                         vh.bmiHeader.biSize   = sizeof(vh.bmiHeader);
1662                         vh.bmiHeader.biWidth  = i_width > 0 ? i_width :
1663                             ((VIDEOINFOHEADER *)p_mt->pbFormat)->bmiHeader.biWidth;
1664                         vh.bmiHeader.biHeight = i_height > 0 ? i_height :
1665                             ((VIDEOINFOHEADER *)p_mt->pbFormat)->bmiHeader.biHeight;
1666                         vh.bmiHeader.biPlanes      = 3;
1667                         vh.bmiHeader.biBitCount    = 12;
1668                         vh.bmiHeader.biCompression = VLC_CODEC_I420;
1669                         vh.bmiHeader.biSizeImage   = vh.bmiHeader.biWidth * 12 *
1670                             vh.bmiHeader.biHeight / 8;
1671                         mtr.lSampleSize            = vh.bmiHeader.biSizeImage;
1672
1673                         msg_Dbg( p_this, "EnumDeviceCaps: input pin media: using 'I420' in place of unsupported format 'HCW2'");
1674
1675                         if( SUCCEEDED(CopyMediaType(mt+mt_count, &mtr)) )
1676                             ++mt_count;
1677                     }
1678                 }
1679                 FreeMediaType( *p_mt );
1680             }
1681         }
1682
1683         p_enummt->Release();
1684         p_output_pin->Release();
1685     }
1686
1687     p_enumpins->Release();
1688     return mt_count;
1689 }
1690
1691 /*****************************************************************************
1692  * ReadCompressed: reads compressed (MPEG/DV) data from the device.
1693  *****************************************************************************
1694  * Returns -1 in case of error, 0 in case of EOF, otherwise the number of
1695  * bytes.
1696  *****************************************************************************/
1697 static block_t *ReadCompressed( access_t *p_access )
1698 {
1699     access_sys_t   *p_sys = p_access->p_sys;
1700     dshow_stream_t *p_stream = NULL;
1701     VLCMediaSample sample;
1702
1703     /* Read 1 DV/MPEG frame (they contain the video and audio data) */
1704
1705     /* There must be only 1 elementary stream to produce a valid stream
1706      * of MPEG or DV data */
1707     p_stream = p_sys->pp_streams[0];
1708
1709     while( 1 )
1710     {
1711         if( !vlc_object_alive (p_access) || p_access->b_error ) return 0;
1712
1713         /* Get new sample/frame from the elementary stream (blocking). */
1714         vlc_mutex_lock( &p_sys->lock );
1715
1716         if( p_stream->p_capture_filter->CustomGetPin()
1717               ->CustomGetSample( &sample ) != S_OK )
1718         {
1719             /* No data available. Wait until some data has arrived */
1720             vlc_cond_wait( &p_sys->wait, &p_sys->lock );
1721             vlc_mutex_unlock( &p_sys->lock );
1722             continue;
1723         }
1724
1725         vlc_mutex_unlock( &p_sys->lock );
1726
1727         /*
1728          * We got our sample
1729          */
1730         block_t *p_block;
1731         uint8_t *p_data;
1732         int i_data_size = sample.p_sample->GetActualDataLength();
1733
1734         if( !i_data_size || !(p_block = block_New( p_access, i_data_size )) )
1735         {
1736             sample.p_sample->Release();
1737             continue;
1738         }
1739
1740         sample.p_sample->GetPointer( &p_data );
1741         vlc_memcpy( p_block->p_buffer, p_data, i_data_size );
1742         sample.p_sample->Release();
1743
1744         /* The caller got what he wanted */
1745         return p_block;
1746     }
1747
1748     return NULL; /* never reached */
1749 }
1750
1751 /****************************************************************************
1752  * Demux:
1753  ****************************************************************************/
1754 static int Demux( demux_t *p_demux )
1755 {
1756     access_sys_t *p_sys = (access_sys_t *)p_demux->p_sys;
1757     int i_stream;
1758     int i_found_samples;
1759
1760     i_found_samples = 0;
1761     vlc_mutex_lock( &p_sys->lock );
1762
1763     while ( !i_found_samples )
1764     {
1765         /* Try to grab samples from all streams */
1766         for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
1767         {
1768             dshow_stream_t *p_stream = p_sys->pp_streams[i_stream];
1769             if( p_stream->p_capture_filter &&
1770                 p_stream->p_capture_filter->CustomGetPin()
1771                 ->CustomGetSamples( p_stream->samples_queue ) == S_OK )
1772             {
1773                 i_found_samples = 1;
1774             }
1775         }
1776
1777         if ( !i_found_samples)
1778         {
1779             /* Didn't find any audio nor video sample, just wait till the
1780              * dshow thread pushes some samples */
1781             vlc_cond_wait( &p_sys->wait, &p_sys->lock );
1782             /* Some DShow thread pushed data, or the OS broke the wait all
1783              * by itself. In all cases, it's *strongly* advised to test the
1784              * condition again, so let the loop do the test again */
1785         }
1786     }
1787
1788     vlc_mutex_unlock( &p_sys->lock );
1789
1790     for ( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
1791     {
1792         int i_samples;
1793         dshow_stream_t *p_stream = p_sys->pp_streams[i_stream];
1794
1795         i_samples = p_stream->samples_queue.size();
1796         while ( i_samples > 0 )
1797         {
1798             int i_data_size;
1799             uint8_t *p_data;
1800             block_t *p_block;
1801             VLCMediaSample sample;
1802
1803             sample = p_stream->samples_queue.front();
1804             p_stream->samples_queue.pop_front();
1805
1806             i_data_size = sample.p_sample->GetActualDataLength();
1807             sample.p_sample->GetPointer( &p_data );
1808
1809             REFERENCE_TIME i_pts, i_end_date;
1810             HRESULT hr = sample.p_sample->GetTime( &i_pts, &i_end_date );
1811             if( hr != VFW_S_NO_STOP_TIME && hr != S_OK ) i_pts = 0;
1812
1813             if( !i_pts )
1814             {
1815                 if( p_stream->mt.majortype == MEDIATYPE_Video || !p_stream->b_pts )
1816                 {
1817                     /* Use our data timestamp */
1818                     i_pts = sample.i_timestamp;
1819                     p_stream->b_pts = true;
1820                 }
1821             }
1822
1823             i_pts /= 10; /* Dshow works with 100 nano-seconds resolution */
1824
1825 #if 0
1826             msg_Dbg( p_demux, "Read() stream: %i, size: %i, PTS: %"PRId64,
1827                      i_stream, i_data_size, i_pts );
1828 #endif
1829
1830             p_block = block_New( p_demux, i_data_size );
1831             vlc_memcpy( p_block->p_buffer, p_data, i_data_size );
1832             p_block->i_pts = p_block->i_dts = i_pts;
1833             sample.p_sample->Release();
1834
1835             es_out_Control( p_demux->out, ES_OUT_SET_PCR, i_pts > 0 ? i_pts : 0 );
1836             es_out_Send( p_demux->out, p_stream->p_es, p_block );
1837
1838             i_samples--;
1839         }
1840     }
1841
1842     return 1;
1843 }
1844
1845 /*****************************************************************************
1846  * AccessControl:
1847  *****************************************************************************/
1848 static int AccessControl( access_t *p_access, int i_query, va_list args )
1849 {
1850     bool   *pb_bool;
1851     int          *pi_int;
1852     int64_t      *pi_64;
1853
1854     switch( i_query )
1855     {
1856     /* */
1857     case ACCESS_CAN_SEEK:
1858     case ACCESS_CAN_FASTSEEK:
1859     case ACCESS_CAN_PAUSE:
1860     case ACCESS_CAN_CONTROL_PACE:
1861         pb_bool = (bool*)va_arg( args, bool* );
1862         *pb_bool = false;
1863         break;
1864
1865     /* */
1866     case ACCESS_GET_PTS_DELAY:
1867         pi_64 = (int64_t*)va_arg( args, int64_t * );
1868         *pi_64 = (int64_t)var_GetInteger( p_access, "dshow-caching" ) * 1000;
1869         break;
1870
1871     /* */
1872     case ACCESS_SET_PAUSE_STATE:
1873     case ACCESS_GET_TITLE_INFO:
1874     case ACCESS_SET_TITLE:
1875     case ACCESS_SET_SEEKPOINT:
1876     case ACCESS_SET_PRIVATE_ID_STATE:
1877         return VLC_EGENERIC;
1878
1879     default:
1880         msg_Warn( p_access, "unimplemented query in control" );
1881         return VLC_EGENERIC;
1882     }
1883
1884     return VLC_SUCCESS;
1885 }
1886
1887 /****************************************************************************
1888  * DemuxControl:
1889  ****************************************************************************/
1890 static int DemuxControl( demux_t *p_demux, int i_query, va_list args )
1891 {
1892     bool *pb;
1893     int64_t    *pi64;
1894
1895     switch( i_query )
1896     {
1897     /* Special for access_demux */
1898     case DEMUX_CAN_PAUSE:
1899     case DEMUX_CAN_SEEK:
1900     case DEMUX_SET_PAUSE_STATE:
1901     case DEMUX_CAN_CONTROL_PACE:
1902         pb = (bool*)va_arg( args, bool * );
1903         *pb = false;
1904         return VLC_SUCCESS;
1905
1906     case DEMUX_GET_PTS_DELAY:
1907         pi64 = (int64_t*)va_arg( args, int64_t * );
1908         *pi64 = (int64_t)var_GetInteger( p_demux, "dshow-caching" ) * 1000;
1909         return VLC_SUCCESS;
1910
1911     case DEMUX_GET_TIME:
1912         pi64 = (int64_t*)va_arg( args, int64_t * );
1913         *pi64 = mdate();
1914         return VLC_SUCCESS;
1915
1916     /* TODO implement others */
1917     default:
1918         return VLC_EGENERIC;
1919     }
1920
1921     return VLC_EGENERIC;
1922 }
1923
1924 /*****************************************************************************
1925  * config variable callback
1926  *****************************************************************************/
1927 static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
1928                                vlc_value_t newval, vlc_value_t oldval, void * )
1929 {
1930     module_config_t *p_item;
1931     bool b_audio = false;
1932     int i;
1933
1934     p_item = config_FindConfig( p_this, psz_name );
1935     if( !p_item ) return VLC_SUCCESS;
1936
1937     if( !strcmp( psz_name, "dshow-adev" ) ) b_audio = true;
1938
1939     /* Clear-up the current list */
1940     if( p_item->i_list )
1941     {
1942         /* Keep the 2 first entries */
1943         for( i = 2; i < p_item->i_list; i++ )
1944         {
1945             free( const_cast<char *>(p_item->ppsz_list[i]) );
1946             free( const_cast<char *>(p_item->ppsz_list_text[i]) );
1947         }
1948         /* TODO: Remove when no more needed */
1949         p_item->ppsz_list[i] = NULL;
1950         p_item->ppsz_list_text[i] = NULL;
1951     }
1952     p_item->i_list = 2;
1953
1954     /* Find list of devices */
1955     list<string> list_devices;
1956
1957     /* Initialize OLE/COM */
1958     CoInitialize( 0 );
1959
1960     FindCaptureDevice( p_this, NULL, &list_devices, b_audio );
1961
1962     /* Uninitialize OLE/COM */
1963     CoUninitialize();
1964
1965     if( !list_devices.size() ) return VLC_SUCCESS;
1966
1967     p_item->ppsz_list = (char**)xrealloc( p_item->ppsz_list,
1968                           (list_devices.size()+3) * sizeof(char *) );
1969     p_item->ppsz_list_text = (char**)xrealloc( p_item->ppsz_list_text,
1970                           (list_devices.size()+3) * sizeof(char *) );
1971
1972     list<string>::iterator iter;
1973     for( iter = list_devices.begin(), i = 2; iter != list_devices.end();
1974          iter++, i++ )
1975     {
1976         p_item->ppsz_list[i] = strdup( iter->c_str() );
1977         p_item->ppsz_list_text[i] = NULL;
1978         p_item->i_list++;
1979     }
1980     p_item->ppsz_list[i] = NULL;
1981     p_item->ppsz_list_text[i] = NULL;
1982
1983     /* Signal change to the interface */
1984     p_item->b_dirty = true;
1985
1986     return VLC_SUCCESS;
1987 }
1988
1989 static int ConfigDevicesCallback( vlc_object_t *p_this, char const *psz_name,
1990                                vlc_value_t newval, vlc_value_t oldval, void * )
1991 {
1992     module_config_t *p_item;
1993     bool b_audio = false;
1994     char *psz_device = NULL;
1995     int i_ret = VLC_SUCCESS;
1996
1997     if( !EMPTY_STR( newval.psz_string ) )
1998         psz_device = strdup( newval.psz_string );
1999
2000     /* Initialize OLE/COM */
2001     CoInitialize( 0 );
2002
2003     p_item = config_FindConfig( p_this, psz_name );
2004
2005     if( !p_item )
2006     {
2007         free( psz_device );
2008         CoUninitialize();
2009         return VLC_SUCCESS;
2010     }
2011
2012     if( !strcmp( psz_name, "dshow-adev" ) ) b_audio = true;
2013
2014     string devicename;
2015
2016     if( psz_device )
2017     {
2018         devicename = psz_device ;
2019     }
2020     else
2021     {
2022         /* If no device name was specified, pick the 1st one */
2023         list<string> list_devices;
2024
2025         /* Enumerate devices */
2026         FindCaptureDevice( p_this, NULL, &list_devices, b_audio );
2027         if( !list_devices.size() )
2028         {
2029             CoUninitialize();
2030             return VLC_EGENERIC;
2031         }
2032         devicename = *list_devices.begin();
2033     }
2034
2035     IBaseFilter *p_device_filter =
2036         FindCaptureDevice( p_this, &devicename, NULL, b_audio );
2037     if( p_device_filter )
2038     {
2039         ShowPropertyPage( p_device_filter );
2040         p_device_filter->Release();
2041     }
2042     else
2043     {
2044         msg_Err( p_this, "didn't find device: %s", devicename.c_str() );
2045         i_ret = VLC_EGENERIC;
2046     }
2047
2048     /* Uninitialize OLE/COM */
2049     CoUninitialize();
2050
2051     free( psz_device );
2052     return i_ret;
2053 }
2054
2055 /*****************************************************************************
2056  * Properties
2057  *****************************************************************************/
2058
2059 static void ShowPropertyPage( IUnknown *obj )
2060 {
2061     ISpecifyPropertyPages *p_spec;
2062     CAUUID cauuid;
2063
2064     HRESULT hr = obj->QueryInterface( IID_ISpecifyPropertyPages,
2065                                       (void **)&p_spec );
2066     if( FAILED(hr) ) return;
2067
2068     if( SUCCEEDED(p_spec->GetPages( &cauuid )) )
2069     {
2070         if( cauuid.cElems > 0 )
2071         {
2072             HWND hwnd_desktop = ::GetDesktopWindow();
2073
2074             OleCreatePropertyFrame( hwnd_desktop, 30, 30, NULL, 1, &obj,
2075                                     cauuid.cElems, cauuid.pElems, 0, 0, NULL );
2076
2077             CoTaskMemFree( cauuid.pElems );
2078         }
2079         p_spec->Release();
2080     }
2081 }
2082
2083 static void ShowDeviceProperties( vlc_object_t *p_this,
2084                                   ICaptureGraphBuilder2 *p_graph,
2085                                   IBaseFilter *p_device_filter,
2086                                   bool b_audio )
2087 {
2088     HRESULT hr;
2089     msg_Dbg( p_this, "configuring Device Properties" );
2090
2091     /*
2092      * Video or audio capture filter page
2093      */
2094     ShowPropertyPage( p_device_filter );
2095
2096     /*
2097      * Audio capture pin
2098      */
2099     if( p_graph && b_audio )
2100     {
2101         IAMStreamConfig *p_SC;
2102
2103         msg_Dbg( p_this, "showing WDM Audio Configuration Pages" );
2104
2105         hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
2106                                      &MEDIATYPE_Audio, p_device_filter,
2107                                      IID_IAMStreamConfig, (void **)&p_SC );
2108         if( SUCCEEDED(hr) )
2109         {
2110             ShowPropertyPage(p_SC);
2111             p_SC->Release();
2112         }
2113
2114         /*
2115          * TV Audio filter
2116          */
2117         IAMTVAudio *p_TVA;
2118         HRESULT hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
2119                                              &MEDIATYPE_Audio, p_device_filter,
2120                                              IID_IAMTVAudio, (void **)&p_TVA );
2121         if( SUCCEEDED(hr) )
2122         {
2123             ShowPropertyPage(p_TVA);
2124             p_TVA->Release();
2125         }
2126     }
2127
2128     /*
2129      * Video capture pin
2130      */
2131     if( p_graph && !b_audio )
2132     {
2133         IAMStreamConfig *p_SC;
2134
2135         msg_Dbg( p_this, "showing WDM Video Configuration Pages" );
2136
2137         hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
2138                                      &MEDIATYPE_Interleaved, p_device_filter,
2139                                      IID_IAMStreamConfig, (void **)&p_SC );
2140         if( FAILED(hr) )
2141         {
2142             hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
2143                                          &MEDIATYPE_Video, p_device_filter,
2144                                          IID_IAMStreamConfig, (void **)&p_SC );
2145         }
2146
2147         if( FAILED(hr) )
2148         {
2149             hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
2150                                          &MEDIATYPE_Stream, p_device_filter,
2151                                          IID_IAMStreamConfig, (void **)&p_SC );
2152         }
2153
2154         if( SUCCEEDED(hr) )
2155         {
2156             ShowPropertyPage(p_SC);
2157             p_SC->Release();
2158         }
2159     }
2160 }
2161
2162 static void ShowTunerProperties( vlc_object_t *p_this,
2163                                  ICaptureGraphBuilder2 *p_graph,
2164                                  IBaseFilter *p_device_filter,
2165                                  bool b_audio )
2166 {
2167     HRESULT hr;
2168     msg_Dbg( p_this, "configuring Tuner Properties" );
2169
2170     if( !p_graph || b_audio ) return;
2171
2172     IAMTVTuner *p_TV;
2173     hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
2174                                  &MEDIATYPE_Interleaved, p_device_filter,
2175                                  IID_IAMTVTuner, (void **)&p_TV );
2176     if( FAILED(hr) )
2177     {
2178         hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
2179                                      &MEDIATYPE_Video, p_device_filter,
2180                                      IID_IAMTVTuner, (void **)&p_TV );
2181     }
2182
2183     if( FAILED(hr) )
2184     {
2185         hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE,
2186                                      &MEDIATYPE_Stream, p_device_filter,
2187                                      IID_IAMTVTuner, (void **)&p_TV );
2188     }
2189
2190     if( SUCCEEDED(hr) )
2191     {
2192         ShowPropertyPage(p_TV);
2193         p_TV->Release();
2194     }
2195 }
2196
2197 static void ConfigTuner( vlc_object_t *p_this, ICaptureGraphBuilder2 *p_graph,
2198                          IBaseFilter *p_device_filter )
2199 {
2200     int i_channel, i_country, i_input, i_amtuner_mode;
2201     long l_modes = 0;
2202     IAMTVTuner *p_TV;
2203     HRESULT hr;
2204
2205     if( !p_graph ) return;
2206
2207     i_channel = var_GetInteger( p_this, "dshow-tuner-channel" );
2208     i_country = var_GetInteger( p_this, "dshow-tuner-country" );
2209     i_input = var_GetInteger( p_this, "dshow-tuner-input" );
2210     i_amtuner_mode = var_GetInteger( p_this, "dshow-amtuner-mode" );
2211
2212     if( !i_channel && !i_country && !i_input ) return; /* Nothing to do */
2213
2214     msg_Dbg( p_this, "tuner config: channel %i, country %i, input type %i",
2215              i_channel, i_country, i_input );
2216
2217     hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE, &MEDIATYPE_Interleaved,
2218                                  p_device_filter, IID_IAMTVTuner,
2219                                  (void **)&p_TV );
2220     if( FAILED(hr) )
2221     {
2222         hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE, &MEDIATYPE_Video,
2223                                      p_device_filter, IID_IAMTVTuner,
2224                                      (void **)&p_TV );
2225     }
2226
2227     if( FAILED(hr) )
2228     {
2229         hr = p_graph->FindInterface( &PIN_CATEGORY_CAPTURE, &MEDIATYPE_Stream,
2230                                      p_device_filter, IID_IAMTVTuner,
2231                                      (void **)&p_TV );
2232     }
2233
2234     if( FAILED(hr) )
2235     {
2236         msg_Dbg( p_this, "couldn't find tuner interface" );
2237         return;
2238     }
2239
2240     hr = p_TV->GetAvailableModes( &l_modes );
2241     if( SUCCEEDED(hr) && (l_modes & i_amtuner_mode) )
2242     {
2243         hr = p_TV->put_Mode( (AMTunerModeType)i_amtuner_mode );
2244     }
2245
2246     if( i_input == 1 ) p_TV->put_InputType( 0, TunerInputCable );
2247     else if( i_input == 2 ) p_TV->put_InputType( 0, TunerInputAntenna );
2248
2249     p_TV->put_CountryCode( i_country );
2250     p_TV->put_Channel( i_channel, AMTUNER_SUBCHAN_NO_TUNE,
2251                        AMTUNER_SUBCHAN_NO_TUNE );
2252     p_TV->Release();
2253 }