dshow.cpp 80.9 KB
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/*****************************************************************************
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 * dshow.cpp : DirectShow access module for vlc
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 *****************************************************************************
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 * Copyright (C) 2002, 2003 the VideoLAN team
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 * $Id$
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 *
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 * Author: Gildas Bazin <gbazin@videolan.org>
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 *         Damien Fouilleul <damienf@videolan.org>
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 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

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#define __STDC_FORMAT_MACROS 1
#include <inttypes.h>

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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_input.h>
#include <vlc_access.h>
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#include <vlc_demux.h>
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#include <vlc_vout.h>
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#include <vlc_interface.h>
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#include "common.h"
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#include "filter.h"

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/*****************************************************************************
 * Access: local prototypes
 *****************************************************************************/
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static block_t *ReadCompressed( access_t * );
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static int AccessControl ( access_t *, int, va_list );
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static int Demux       ( demux_t * );
static int DemuxControl( demux_t *, int, va_list );

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static int OpenDevice( vlc_object_t *, access_sys_t *, string, bool );
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static IBaseFilter *FindCaptureDevice( vlc_object_t *, string *,
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                                       list<string> *, bool );
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static size_t EnumDeviceCaps( vlc_object_t *, IBaseFilter *,
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                              int, int, int, int, int, int,
                              AM_MEDIA_TYPE *mt, size_t );
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static bool ConnectFilters( vlc_object_t *, access_sys_t *,
                            IBaseFilter *, CaptureFilter * );
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static int FindDevicesCallback( vlc_object_t *, char const *,
                                vlc_value_t, vlc_value_t, void * );
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static int ConfigDevicesCallback( vlc_object_t *, char const *,
                                  vlc_value_t, vlc_value_t, void * );
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static void ShowPropertyPage( IUnknown * );
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static void ShowDeviceProperties( vlc_object_t *, ICaptureGraphBuilder2 *,
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                                  IBaseFilter *, bool );
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static void ShowTunerProperties( vlc_object_t *, ICaptureGraphBuilder2 *,
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                                 IBaseFilter *, bool );
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static void ConfigTuner( vlc_object_t *, ICaptureGraphBuilder2 *,
                         IBaseFilter * );
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/*****************************************************************************
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 * Module descriptor
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 *****************************************************************************/
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static const char *const ppsz_vdev[] = { "", "none" };
static const char *const ppsz_vdev_text[] = { N_("Default"), N_("None") };
static const char *const ppsz_adev[] = { "", "none" };
static const char *const ppsz_adev_text[] = { N_("Default"), N_("None") };
static const int pi_tuner_input[] = { 0, 1, 2 };
static const char *const ppsz_tuner_input_text[] =
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    {N_("Default"), N_("Cable"), N_("Antenna")};
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static const int pi_amtuner_mode[]  = { AMTUNER_MODE_DEFAULT,
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                                 AMTUNER_MODE_TV,
                                 AMTUNER_MODE_FM_RADIO,
                                 AMTUNER_MODE_AM_RADIO,
                                 AMTUNER_MODE_DSS };
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static const char *const ppsz_amtuner_mode_text[] = { N_("Default"),
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                                          N_("TV"),
                                          N_("FM radio"),
                                          N_("AM radio"),
                                          N_("DSS") };
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#define CACHING_TEXT N_("Caching value in ms")
#define CACHING_LONGTEXT N_( \
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    "Caching value for DirectShow streams. " \
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    "This value should be set in milliseconds." )
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#define VDEV_TEXT N_("Video device name")
#define VDEV_LONGTEXT N_( \
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    "Name of the video device that will be used by the " \
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    "DirectShow plugin. If you don't specify anything, the default device " \
    "will be used.")
#define ADEV_TEXT N_("Audio device name")
#define ADEV_LONGTEXT N_( \
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    "Name of the audio device that will be used by the " \
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    "DirectShow plugin. If you don't specify anything, the default device " \
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    "will be used. ")
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#define SIZE_TEXT N_("Video size")
#define SIZE_LONGTEXT N_( \
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    "Size of the video that will be displayed by the " \
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    "DirectShow plugin. If you don't specify anything the default size for " \
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    "your device will be used. You can specify a standard size (cif, d1, ...) or <width>x<height>.")
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#define CHROMA_TEXT N_("Video input chroma format")
#define CHROMA_LONGTEXT N_( \
    "Force the DirectShow video input to use a specific chroma format " \
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    "(eg. I420 (default), RV24, etc.)")
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#define FPS_TEXT N_("Video input frame rate")
#define FPS_LONGTEXT N_( \
    "Force the DirectShow video input to use a specific frame rate" \
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    "(eg. 0 means default, 25, 29.97, 50, 59.94, etc.)")
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#define CONFIG_TEXT N_("Device properties")
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#define CONFIG_LONGTEXT N_( \
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    "Show the properties dialog of the selected device before starting the " \
    "stream.")
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#define TUNER_TEXT N_("Tuner properties")
#define TUNER_LONGTEXT N_( \
    "Show the tuner properties [channel selection] page." )
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#define CHANNEL_TEXT N_("Tuner TV Channel")
#define CHANNEL_LONGTEXT N_( \
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    "Set the TV channel the tuner will set to " \
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    "(0 means default)." )
#define COUNTRY_TEXT N_("Tuner country code")
#define COUNTRY_LONGTEXT N_( \
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    "Set the tuner country code that establishes the current " \
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    "channel-to-frequency mapping (0 means default)." )
#define TUNER_INPUT_TEXT N_("Tuner input type")
#define TUNER_INPUT_LONGTEXT N_( \
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    "Select the tuner input type (Cable/Antenna)." )
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#define VIDEO_IN_TEXT N_("Video input pin")
#define VIDEO_IN_LONGTEXT N_( \
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  "Select the video input source, such as composite, s-video, " \
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  "or tuner. Since these settings are hardware-specific, you should find good " \
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  "settings in the \"Device config\" area, and use those numbers here. -1 " \
  "means that settings will not be changed.")
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#define AUDIO_IN_TEXT N_("Audio input pin")
#define AUDIO_IN_LONGTEXT N_( \
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  "Select the audio input source. See the \"video input\" option." )
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#define VIDEO_OUT_TEXT N_("Video output pin")
#define VIDEO_OUT_LONGTEXT N_( \
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  "Select the video output type. See the \"video input\" option." )
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#define AUDIO_OUT_TEXT N_("Audio output pin")
#define AUDIO_OUT_LONGTEXT N_( \
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  "Select the audio output type. See the \"video input\" option." )
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#define AMTUNER_MODE_TEXT N_("AM Tuner mode")
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#define AMTUNER_MODE_LONGTEXT N_( \
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    "AM Tuner mode. Can be one of Default (0), TV (1)," \
     "AM Radio (2), FM Radio (3) or DSS (4).")
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#define AUDIO_CHANNELS_TEXT N_("Number of audio channels")
#define AUDIO_CHANNELS_LONGTEXT N_( \
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    "Select audio input format with the given number of audio channels (if non 0)" )
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#define AUDIO_SAMPLERATE_TEXT N_("Audio sample rate")
#define AUDIO_SAMPLERATE_LONGTEXT N_( \
    "Select audio input format with the given sample rate (if non 0)" )

#define AUDIO_BITSPERSAMPLE_TEXT N_("Audio bits per sample")
#define AUDIO_BITSPERSAMPLE_LONGTEXT N_( \
    "Select audio input format with the given bits/sample (if non 0)" )

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static int  CommonOpen ( vlc_object_t *, access_sys_t *, bool );
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static void CommonClose( vlc_object_t *, access_sys_t * );

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static int  AccessOpen ( vlc_object_t * );
static void AccessClose( vlc_object_t * );

static int  DemuxOpen  ( vlc_object_t * );
static void DemuxClose ( vlc_object_t * );

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vlc_module_begin();
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    set_shortname( N_("DirectShow") );
    set_description( N_("DirectShow input") );
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    set_category( CAT_INPUT );
    set_subcategory( SUBCAT_INPUT_ACCESS );
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    add_integer( "dshow-caching", (mtime_t)(0.2*CLOCK_FREQ) / 1000, NULL,
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                 CACHING_TEXT, CACHING_LONGTEXT, true );
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    add_string( "dshow-vdev", NULL, NULL, VDEV_TEXT, VDEV_LONGTEXT, false);
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        change_string_list( ppsz_vdev, ppsz_vdev_text, FindDevicesCallback );
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        change_action_add( FindDevicesCallback, N_("Refresh list") );
        change_action_add( ConfigDevicesCallback, N_("Configure") );
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    add_string( "dshow-adev", NULL, NULL, ADEV_TEXT, ADEV_LONGTEXT, false);
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        change_string_list( ppsz_adev, ppsz_adev_text, FindDevicesCallback );
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        change_action_add( FindDevicesCallback, N_("Refresh list") );
        change_action_add( ConfigDevicesCallback, N_("Configure") );
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    add_string( "dshow-size", NULL, NULL, SIZE_TEXT, SIZE_LONGTEXT, false);
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    add_string( "dshow-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
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                true );
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    add_float( "dshow-fps", 0.0f, NULL, FPS_TEXT, FPS_LONGTEXT,
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                true );
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    add_bool( "dshow-config", false, NULL, CONFIG_TEXT, CONFIG_LONGTEXT,
              true );
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    add_bool( "dshow-tuner", false, NULL, TUNER_TEXT, TUNER_LONGTEXT,
              true );
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    add_integer( "dshow-tuner-channel", 0, NULL, CHANNEL_TEXT,
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                 CHANNEL_LONGTEXT, true );
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    add_integer( "dshow-tuner-country", 0, NULL, COUNTRY_TEXT,
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                 COUNTRY_LONGTEXT, true );
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    add_integer( "dshow-tuner-input", 0, NULL, TUNER_INPUT_TEXT,
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                 TUNER_INPUT_LONGTEXT, true );
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        change_integer_list( pi_tuner_input, ppsz_tuner_input_text, NULL );
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    add_integer( "dshow-video-input",  -1, NULL, VIDEO_IN_TEXT,
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                 VIDEO_IN_LONGTEXT, true );
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    add_integer( "dshow-audio-input",  -1, NULL, AUDIO_IN_TEXT,
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                 AUDIO_IN_LONGTEXT, true );
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    add_integer( "dshow-video-output", -1, NULL, VIDEO_OUT_TEXT,
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                 VIDEO_OUT_LONGTEXT, true );
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    add_integer( "dshow-audio-output", -1, NULL, AUDIO_OUT_TEXT,
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                 AUDIO_OUT_LONGTEXT, true );
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    add_integer( "dshow-amtuner-mode", AMTUNER_MODE_TV, NULL,
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                AMTUNER_MODE_TEXT, AMTUNER_MODE_LONGTEXT, false);
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        change_integer_list( pi_amtuner_mode, ppsz_amtuner_mode_text, NULL );
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    add_integer( "dshow-audio-channels", 0, NULL, AUDIO_CHANNELS_TEXT,
                 AUDIO_CHANNELS_LONGTEXT, true );
    add_integer( "dshow-audio-samplerate", 0, NULL, AUDIO_SAMPLERATE_TEXT,
                 AUDIO_SAMPLERATE_LONGTEXT, true );
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    add_integer( "dshow-audio-bitspersample", 0, NULL, AUDIO_BITSPERSAMPLE_TEXT,
                 AUDIO_BITSPERSAMPLE_LONGTEXT, true );
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    add_shortcut( "dshow" );
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    set_capability( "access_demux", 0 );
    set_callbacks( DemuxOpen, DemuxClose );
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    add_submodule();
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    set_description( N_("DirectShow input") );
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    set_capability( "access", 0 );
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    set_callbacks( AccessOpen, AccessClose );
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vlc_module_end();

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/*****************************************************************************
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 * DirectShow elementary stream descriptor
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 *****************************************************************************/
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typedef struct dshow_stream_t
{
    string          devicename;
    IBaseFilter     *p_device_filter;
    CaptureFilter   *p_capture_filter;
    AM_MEDIA_TYPE   mt;

    union
    {
      VIDEOINFOHEADER video;
      WAVEFORMATEX    audio;

    } header;

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    int             i_fourcc;
    es_out_id_t     *p_es;

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    bool      b_pts;
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    deque<VLCMediaSample> samples_queue;
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} dshow_stream_t;

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/*****************************************************************************
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 * DirectShow utility functions
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 *****************************************************************************/
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static void CreateDirectShowGraph( access_sys_t *p_sys )
{
    p_sys->i_crossbar_route_depth = 0;

    /* Create directshow filter graph */
    if( SUCCEEDED( CoCreateInstance( CLSID_FilterGraph, 0, CLSCTX_INPROC,
                       (REFIID)IID_IFilterGraph, (void **)&p_sys->p_graph) ) )
    {
        /* Create directshow capture graph builder if available */
        if( SUCCEEDED( CoCreateInstance( CLSID_CaptureGraphBuilder2, 0,
                         CLSCTX_INPROC, (REFIID)IID_ICaptureGraphBuilder2,
                         (void **)&p_sys->p_capture_graph_builder2 ) ) )
        {
            p_sys->p_capture_graph_builder2->
                SetFiltergraph((IGraphBuilder *)p_sys->p_graph);
        }

        p_sys->p_graph->QueryInterface( IID_IMediaControl,
                                        (void **)&p_sys->p_control );
    }
}

static void DeleteDirectShowGraph( access_sys_t *p_sys )
{
    DeleteCrossbarRoutes( p_sys );

    /* Remove filters from graph */
    for( int i = 0; i < p_sys->i_streams; i++ )
    {
        p_sys->p_graph->RemoveFilter( p_sys->pp_streams[i]->p_capture_filter );
        p_sys->p_graph->RemoveFilter( p_sys->pp_streams[i]->p_device_filter );
        p_sys->pp_streams[i]->p_capture_filter->Release();
        p_sys->pp_streams[i]->p_device_filter->Release();
    }

    /* Release directshow objects */
    if( p_sys->p_control )
    {
        p_sys->p_control->Release();
        p_sys->p_control = NULL;
    }
    if( p_sys->p_capture_graph_builder2 )
    {
        p_sys->p_capture_graph_builder2->Release();
        p_sys->p_capture_graph_builder2 = NULL;
    }

    if( p_sys->p_graph )
    {
        p_sys->p_graph->Release();
        p_sys->p_graph = NULL;
    }
}

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/*****************************************************************************
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 * CommonOpen: open direct show device
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 *****************************************************************************/
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static int CommonOpen( vlc_object_t *p_this, access_sys_t *p_sys,
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                       bool b_access_demux )
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{
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    vlc_value_t  val;
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    int i;
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    /* Get/parse options and open device(s) */
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    string vdevname, adevname;
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    int i_width = 0, i_height = 0, i_chroma = 0;
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    bool b_audio = true;
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    var_Create( p_this, "dshow-config", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-tuner", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
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    var_Create( p_this, "dshow-vdev", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
    var_Get( p_this, "dshow-vdev", &val );
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    if( val.psz_string ) vdevname = string( val.psz_string );
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    free( val.psz_string );
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    var_Create( p_this, "dshow-adev", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
    var_Get( p_this, "dshow-adev", &val );
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    if( val.psz_string ) adevname = string( val.psz_string );
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    free( val.psz_string );
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    static struct {char *psz_size; int  i_width; int  i_height;} size_table[] =
    { { "subqcif", 128, 96 }, { "qsif", 160, 120 }, { "qcif", 176, 144 },
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      { "sif", 320, 240 }, { "cif", 352, 288 }, { "d1", 640, 480 },
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      { 0, 0, 0 },
    };

    var_Create( p_this, "dshow-size", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
    var_Get( p_this, "dshow-size", &val );
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    if( val.psz_string && *val.psz_string )
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    {
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        for( i = 0; size_table[i].psz_size; i++ )
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        {
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            if( !strcmp( val.psz_string, size_table[i].psz_size ) )
            {
                i_width = size_table[i].i_width;
                i_height = size_table[i].i_height;
                break;
            }
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        }
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        if( !size_table[i].psz_size ) /* Try to parse "WidthxHeight" */
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        {
            char *psz_parser;
            i_width = strtol( val.psz_string, &psz_parser, 0 );
            if( *psz_parser == 'x' || *psz_parser == 'X')
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            {
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                i_height = strtol( psz_parser + 1, &psz_parser, 0 );
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            }
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            msg_Dbg( p_this, "width x height %dx%d", i_width, i_height );
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        }
    }
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    free( val.psz_string );
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    p_sys->b_chroma = false;
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    var_Create( p_this, "dshow-chroma", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
    var_Get( p_this, "dshow-chroma", &val );
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    if( val.psz_string && strlen( val.psz_string ) >= 4 )
    {
        i_chroma = VLC_FOURCC( val.psz_string[0], val.psz_string[1],
                               val.psz_string[2], val.psz_string[3] );
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        p_sys->b_chroma = true;
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    }
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    free( val.psz_string );
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    var_Create( p_this, "dshow-fps", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
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    var_Create( p_this, "dshow-tuner-channel",
                VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-tuner-country",
                VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-tuner-input",
                VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );

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    var_Create( p_this, "dshow-amtuner-mode",
                VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );

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    var_Create( p_this, "dshow-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
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    var_Create( p_this, "dshow-video-input", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-audio-input", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-video-output", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-audio-output", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );

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    /* Initialize OLE/COM */
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    CoInitialize( 0 );
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    /* Initialize some data */
    p_sys->i_streams = 0;
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    p_sys->pp_streams = 0;
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    p_sys->i_width = i_width;
    p_sys->i_height = i_height;
    p_sys->i_chroma = i_chroma;
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    p_sys->p_graph = NULL;
    p_sys->p_capture_graph_builder2 = NULL;
    p_sys->p_control = NULL;
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    vlc_mutex_init( &p_sys->lock );
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    vlc_cond_init( &p_sys->wait );
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    /* Build directshow graph */
    CreateDirectShowGraph( p_sys );
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    if( OpenDevice( p_this, p_sys, vdevname, 0 ) != VLC_SUCCESS )
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    {
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        msg_Err( p_this, "can't open video");
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    }
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    else
    {
        /* Check if we can handle the demuxing ourselves or need to spawn
         * a demuxer module */
        dshow_stream_t *p_stream = p_sys->pp_streams[p_sys->i_streams-1];

        if( p_stream->mt.majortype == MEDIATYPE_Video )
        {
            if( /* Raw DV stream */
                p_stream->i_fourcc == VLC_FOURCC('d','v','s','l') ||
                p_stream->i_fourcc == VLC_FOURCC('d','v','s','d') ||
                p_stream->i_fourcc == VLC_FOURCC('d','v','h','d') ||
                /* Raw MPEG video stream */
                p_stream->i_fourcc == VLC_FOURCC('m','p','2','v') )
            {
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                b_audio = false;
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                if( b_access_demux )
                {
                    /* Let the access (only) take care of that */
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                    return VLC_EGENERIC;
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                }
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            }
        }
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        if( p_stream->mt.majortype == MEDIATYPE_Stream )
        {
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            b_audio = false;
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            if( b_access_demux )
            {
                /* Let the access (only) take care of that */
                return VLC_EGENERIC;
            }
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            var_Get( p_this, "dshow-tuner", &val );
            if( val.b_bool )
            {
                /* FIXME: we do MEDIATYPE_Stream here so we don't do
                 * it twice. */
                ShowTunerProperties( p_this, p_sys->p_capture_graph_builder2,
                                     p_stream->p_device_filter, 0 );
            }
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        }
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    }

    if( b_audio && OpenDevice( p_this, p_sys, adevname, 1 ) != VLC_SUCCESS )
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    {
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        msg_Err( p_this, "can't open audio");
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    }
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    for( i = p_sys->i_crossbar_route_depth-1; i >= 0 ; --i )
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    {
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            var_Get( p_this, "dshow-video-input", &val );
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            if( val.i_int >= 0 )
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                    p_sys->crossbar_routes[i].VideoInputIndex=val.i_int;
            var_Get( p_this, "dshow-video-output", &val );
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            if( val.i_int >= 0 )
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                    p_sys->crossbar_routes[i].VideoOutputIndex=val.i_int;
            var_Get( p_this, "dshow-audio-input", &val );
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            if( val.i_int >= 0 )
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                    p_sys->crossbar_routes[i].AudioInputIndex=val.i_int;
            var_Get( p_this, "dshow-audio-output", &val );
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            if( val.i_int >= 0 )
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                    p_sys->crossbar_routes[i].AudioOutputIndex=val.i_int;

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        IAMCrossbar *pXbar = p_sys->crossbar_routes[i].pXbar;
        LONG VideoInputIndex = p_sys->crossbar_routes[i].VideoInputIndex;
        LONG VideoOutputIndex = p_sys->crossbar_routes[i].VideoOutputIndex;
        LONG AudioInputIndex = p_sys->crossbar_routes[i].AudioInputIndex;
        LONG AudioOutputIndex = p_sys->crossbar_routes[i].AudioOutputIndex;
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        if( SUCCEEDED(pXbar->Route(VideoOutputIndex, VideoInputIndex)) )
        {
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            msg_Dbg( p_this, "crossbar at depth %d, routed video "
                     "output %ld to video input %ld", i, VideoOutputIndex,
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                     VideoInputIndex );
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            if( AudioOutputIndex != -1 && AudioInputIndex != -1 )
            {
                if( SUCCEEDED( pXbar->Route(AudioOutputIndex,
                                            AudioInputIndex)) )
                {
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                    msg_Dbg(p_this, "crossbar at depth %d, routed audio "
                            "output %ld to audio input %ld", i,
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                            AudioOutputIndex, AudioInputIndex );
                }
            }
        }
    }

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    /*
    ** Show properties pages from other filters in graph
    */
    var_Get( p_this, "dshow-config", &val );
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    if( val.b_bool )
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    {
        for( i = p_sys->i_crossbar_route_depth-1; i >= 0 ; --i )
        {
            IAMCrossbar *pXbar = p_sys->crossbar_routes[i].pXbar;
            IBaseFilter *p_XF;
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            if( SUCCEEDED( pXbar->QueryInterface( IID_IBaseFilter,
                                                  (void **)&p_XF ) ) )
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            {
                ShowPropertyPage( p_XF );
                p_XF->Release();
            }
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        }
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    }

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    /* Initialize some data */
    p_sys->i_current_stream = 0;
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    if( !p_sys->i_streams ) return VLC_EGENERIC;
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    return VLC_SUCCESS;
}

/*****************************************************************************
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 * DemuxOpen: open direct show device as an access_demux module
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 *****************************************************************************/
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static int DemuxOpen( vlc_object_t *p_this )
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{
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    demux_t      *p_demux = (demux_t *)p_this;
    access_sys_t *p_sys;
    int i;
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    p_sys = (access_sys_t *)malloc( sizeof( access_sys_t ) );
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    if( !p_sys )
        return VLC_ENOMEM;
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    memset( p_sys, 0, sizeof( access_sys_t ) );
    p_demux->p_sys = (demux_sys_t *)p_sys;
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    if( CommonOpen( p_this, p_sys, true ) != VLC_SUCCESS )
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    {
        CommonClose( p_this, p_sys );
        return VLC_EGENERIC;
    }
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    /* Everything is ready. Let's rock baby */
    msg_Dbg( p_this, "Playing...");
    p_sys->p_control->Run();
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    p_demux->pf_demux   = Demux;
    p_demux->pf_control = DemuxControl;
    p_demux->info.i_update = 0;
    p_demux->info.i_title = 0;
    p_demux->info.i_seekpoint = 0;

    for( i = 0; i < p_sys->i_streams; i++ )
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    {
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        dshow_stream_t *p_stream = p_sys->pp_streams[i];
        es_format_t fmt;
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        if( p_stream->mt.majortype == MEDIATYPE_Video )
        {
            es_format_Init( &fmt, VIDEO_ES, p_stream->i_fourcc );
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            fmt.video.i_width  = p_stream->header.video.bmiHeader.biWidth;
            fmt.video.i_height = p_stream->header.video.bmiHeader.biHeight;
            fmt.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
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            if( !p_stream->header.video.bmiHeader.biCompression )
            {
                /* RGB DIB are coded from bottom to top */
                fmt.video.i_height = (unsigned int)(-(int)fmt.video.i_height);
            }
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            /* Setup rgb mask for RGB formats */
            if( p_stream->i_fourcc == VLC_FOURCC('R','V','2','4') )
            {
                /* This is in BGR format */
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                fmt.video.i_bmask = 0x00ff0000;
                fmt.video.i_gmask = 0x0000ff00;
                fmt.video.i_rmask = 0x000000ff;
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            }
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            if( p_stream->header.video.AvgTimePerFrame )
            {
                fmt.video.i_frame_rate = 10000000;
                fmt.video.i_frame_rate_base =
                    p_stream->header.video.AvgTimePerFrame;
            }
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        }
        else if( p_stream->mt.majortype == MEDIATYPE_Audio )
        {
            es_format_Init( &fmt, AUDIO_ES, p_stream->i_fourcc );
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            fmt.audio.i_channels = p_stream->header.audio.nChannels;
            fmt.audio.i_rate = p_stream->header.audio.nSamplesPerSec;
            fmt.audio.i_bitspersample = p_stream->header.audio.wBitsPerSample;
            fmt.audio.i_blockalign = fmt.audio.i_channels *
                fmt.audio.i_bitspersample / 8;
            fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate *
                fmt.audio.i_bitspersample;
        }

        p_stream->p_es = es_out_Add( p_demux->out, &fmt );
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    }
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    return VLC_SUCCESS;
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}

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/*****************************************************************************
 * AccessOpen: open direct show device as an access module
 *****************************************************************************/
static int AccessOpen( vlc_object_t *p_this )
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{
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    access_t     *p_access = (access_t*)p_this;
    access_sys_t *p_sys;
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    p_access->p_sys = p_sys = (access_sys_t *)malloc( sizeof( access_sys_t ) );
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    if( !p_sys )
        return VLC_ENOMEM;
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    memset( p_sys, 0, sizeof( access_sys_t ) );
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    if( CommonOpen( p_this, p_sys, false ) != VLC_SUCCESS )
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    {
        CommonClose( p_this, p_sys );
        return VLC_EGENERIC;
    }
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    dshow_stream_t *p_stream = p_sys->pp_streams[0];
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    /* Check if we need to force demuxers */
    if( !p_access->psz_demux || !*p_access->psz_demux )
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    {
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        if( p_stream->i_fourcc == VLC_FOURCC('d','v','s','l') ||
            p_stream->i_fourcc == VLC_FOURCC('d','v','s','d') ||
            p_stream->i_fourcc == VLC_FOURCC('d','v','h','d') )
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        {
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            free( p_access->psz_demux );
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            p_access->psz_demux = strdup( "rawdv" );
        }
        else if( p_stream->i_fourcc == VLC_FOURCC('m','p','2','v') )
        {
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            free( p_access->psz_demux );
            p_access->psz_demux = strdup( "mpgv" );
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        }
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    }
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    /* Setup Access */
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    p_access->pf_read = NULL;
    p_access->pf_block = ReadCompressed;
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    p_access->pf_control = AccessControl;
    p_access->pf_seek = NULL;
    p_access->info.i_update = 0;
    p_access->info.i_size = 0;
    p_access->info.i_pos = 0;
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    p_access->info.b_eof = false;
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    p_access->info.i_title = 0;
    p_access->info.i_seekpoint = 0;
    p_access->p_sys = p_sys;

    /* Everything is ready. Let's rock baby */
    msg_Dbg( p_this, "Playing...");
    p_sys->p_control->Run();

    return VLC_SUCCESS;
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}
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/*****************************************************************************
 * CommonClose: close device
 *****************************************************************************/
static void CommonClose( vlc_object_t *p_this, access_sys_t *p_sys )
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{
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    msg_Dbg( p_this, "releasing DirectShow");
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    DeleteDirectShowGraph( p_sys );
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    /* Uninitialize OLE/COM */
    CoUninitialize();
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    for( int i = 0; i < p_sys->i_streams; i++ ) delete p_sys->pp_streams[i];
    if( p_sys->i_streams ) free( p_sys->pp_streams );
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    vlc_mutex_destroy( &p_sys->lock );
    vlc_cond_destroy( &p_sys->wait );
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    free( p_sys );
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}

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/*****************************************************************************
 * AccessClose: close device
 *****************************************************************************/
static void AccessClose( vlc_object_t *p_this )
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{
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    access_t     *p_access = (access_t *)p_this;
    access_sys_t *p_sys    = p_access->p_sys;
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    /* Stop capturing stuff */
    p_sys->p_control->Stop();
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    CommonClose( p_this, p_sys );
}
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/*****************************************************************************
 * DemuxClose: close device
 *****************************************************************************/
static void DemuxClose( vlc_object_t *p_this )
{
    demux_t      *p_demux = (demux_t *)p_this;
    access_sys_t *p_sys   = (access_sys_t *)p_demux->p_sys;
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    /* Stop capturing stuff */
    p_sys->p_control->Stop();
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    CommonClose( p_this, p_sys );
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}

/****************************************************************************
 * ConnectFilters
 ****************************************************************************/
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static bool ConnectFilters( vlc_object_t *p_this, access_sys_t *p_sys,
                            IBaseFilter *p_filter,
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                            CaptureFilter *p_capture_filter )
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{
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    CapturePin *p_input_pin = p_capture_filter->CustomGetPin();
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    AM_MEDIA_TYPE mediaType = p_input_pin->CustomGetMediaType();
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    if( p_sys->p_capture_graph_builder2 )
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    {
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        if( FAILED(p_sys->p_capture_graph_builder2->
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                RenderStream( &PIN_CATEGORY_CAPTURE, &mediaType.majortype,
                              p_filter, 0, (IBaseFilter *)p_capture_filter )) )
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        {
            return false;
        }
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        // Sort out all the possible video inputs
        // The class needs to be given the capture filters ANALOGVIDEO input pin
        IEnumPins *pins = 0;
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        if( ( mediaType.majortype == MEDIATYPE_Video ||
              mediaType.majortype == MEDIATYPE_Stream ) &&
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            SUCCEEDED(p_filter->EnumPins(&pins)) )
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        {
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            IPin        *pP = 0;
            ULONG        n;
            PIN_INFO     pinInfo;
            BOOL         Found = FALSE;
            IKsPropertySet *pKs=0;
            GUID guid;
            DWORD dw;

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            while( !Found && ( S_OK == pins->Next(1, &pP, &n) ) )
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            {
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                if( S_OK == pP->QueryPinInfo(&pinInfo) )
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                {
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                    // is this pin an ANALOGVIDEOIN input pin?
                    if( pinInfo.dir == PINDIR_INPUT &&
                        pP->QueryInterface( IID_IKsPropertySet,
                                            (void **)&pKs ) == S_OK )
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                    {
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                        if( pKs->Get( AMPROPSETID_Pin,
                                      AMPROPERTY_PIN_CATEGORY, NULL, 0,
                                      &guid, sizeof(GUID), &dw ) == S_OK )
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                        {
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                            if( guid == PIN_CATEGORY_ANALOGVIDEOIN )
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                            {
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                                // recursively search crossbar routes
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                                FindCrossbarRoutes( p_this, p_sys, pP, 0 );
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                                // found it
                                Found = TRUE;
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                            }
                        }
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                        pKs->Release();
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                    }
                    pinInfo.pFilter->Release();
                }
                pP->Release();
            }
            pins->Release();
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        }
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        return true;
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    }
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    else
    {
        IEnumPins *p_enumpins;
        IPin *p_pin;
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        if( S_OK != p_filter->EnumPins( &p_enumpins ) ) return false;

        while( S_OK == p_enumpins->Next( 1, &p_pin, NULL ) )
        {
            PIN_DIRECTION pin_dir;
            p_pin->QueryDirection( &pin_dir );

            if( pin_dir == PINDIR_OUTPUT &&
                p_sys->p_graph->ConnectDirect( p_pin, (IPin *)p_input_pin,
                                               0 ) == S_OK )
            {
                p_pin->Release();
                p_enumpins->Release();
                return true;
            }
            p_pin->Release();
        }

        p_enumpins->Release();
        return false;
    }
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}

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/*
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 * get fourcc priority from arbritary preference, the higher the better
 */
static int GetFourCCPriority( int i_fourcc )
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