vout_intf.c

video linux conference

{
    image_handler_t *p_image = image_HandlerCreate( p_vout );
    video_format_t fmt_in = {0}, fmt_out = {0};
    char *psz_filename;
    subpicture_t *p_subpic;
    picture_t *p_pif;
    vlc_value_t val, format;
    int i_ret;

    var_Get( p_vout, "snapshot-path", &val );
    if( val.psz_string && !*val.psz_string )
    {
        free( val.psz_string );
        val.psz_string = 0;
    }

#if defined(SYS_DARWIN) || defined(SYS_BEOS)
    if( !val.psz_string && p_vout->p_vlc->psz_homedir )
    {
        asprintf( &val.psz_string, "%s/Desktop",
                  p_vout->p_vlc->psz_homedir );
    }

#elif defined(WIN32) && !defined(UNDER_CE)
    if( !val.psz_string && p_vout->p_vlc->psz_homedir )
    {
        /* Get the My Pictures folder path */

        char *p_mypicturesdir = NULL;
        typedef HRESULT (WINAPI *SHGETFOLDERPATH)( HWND, int, HANDLE, DWORD,
                                                   LPSTR );
        #ifndef CSIDL_FLAG_CREATE
        #   define CSIDL_FLAG_CREATE 0x8000
        #endif
        #ifndef CSIDL_MYPICTURES
        #   define CSIDL_MYPICTURES 0x27
        #endif
        #ifndef SHGFP_TYPE_CURRENT
        #   define SHGFP_TYPE_CURRENT 0
        #endif

        HINSTANCE shfolder_dll;
        SHGETFOLDERPATH SHGetFolderPath ;

        /* load the shfolder dll to retrieve SHGetFolderPath */
        if( ( shfolder_dll = LoadLibrary( _T("SHFolder.dll") ) ) != NULL )
        {
            SHGetFolderPath = (void *)GetProcAddress( shfolder_dll,
                                                      _T("SHGetFolderPathA") );
            if( SHGetFolderPath != NULL )
            {
                p_mypicturesdir = (char *)malloc( MAX_PATH );
                if( p_mypicturesdir ) 
                {

                    if( S_OK != SHGetFolderPath( NULL,
                                        CSIDL_MYPICTURES | CSIDL_FLAG_CREATE,
                                        NULL, SHGFP_TYPE_CURRENT,
                                        p_mypicturesdir ) )
                    {
                        free( p_mypicturesdir );
                        p_mypicturesdir = NULL;
                    }
                }
            }
            FreeLibrary( shfolder_dll );
        }

        if( p_mypicturesdir == NULL )
        {
            asprintf( &val.psz_string, "%s/" CONFIG_DIR,
                      p_vout->p_vlc->psz_homedir );
        }
        else
        {
            asprintf( &val.psz_string, p_mypicturesdir );
            free( p_mypicturesdir );
        }
    }

#else
    if( !val.psz_string && p_vout->p_vlc->psz_homedir )
    {
        asprintf( &val.psz_string, "%s/" CONFIG_DIR,
                  p_vout->p_vlc->psz_homedir );
    }
#endif

    if( !val.psz_string )
    {
        msg_Err( p_vout, "no directory specified for snapshots" );
        return VLC_EGENERIC;
    }
    var_Get( p_vout, "snapshot-format", &format );
    if( !format.psz_string || !*format.psz_string )
    {
        if( format.psz_string ) free( format.psz_string );
        format.psz_string = strdup( "png" );
    }

    asprintf( &psz_filename, "%s/vlcsnap-%u.%s", val.psz_string,
              (unsigned int)(p_pic->date / 100000) & 0xFFFFFF,
              format.psz_string );
    free( val.psz_string );
    free( format.psz_string );

    /* Save the snapshot */
    fmt_in = p_vout->fmt_in;
    fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
    i_ret = image_WriteUrl( p_image, p_pic, &fmt_in, &fmt_out, psz_filename );
    if( i_ret != VLC_SUCCESS )
    {
        msg_Err( p_vout, "could not create snapshot %s", psz_filename );
        free( psz_filename );
        image_HandlerDelete( p_image );
        return VLC_EGENERIC;
    }

    msg_Dbg( p_vout, "snapshot taken (%s)", psz_filename );
    free( psz_filename );

    /* Inject a subpicture with the snapshot */
    memset( &fmt_out, 0, sizeof(fmt_out) );
    fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
    p_pif = image_Convert( p_image, p_pic, &fmt_in, &fmt_out );
    image_HandlerDelete( p_image );
    if( !p_pif ) return VLC_EGENERIC;

    p_subpic = spu_CreateSubpicture( p_vout->p_spu );
    if( p_subpic == NULL )
    {
         p_pif->pf_release( p_pif );
         return VLC_EGENERIC;
    }

    p_subpic->i_channel = 0;
    p_subpic->i_start = mdate();
    p_subpic->i_stop = mdate() + 4000000;
    p_subpic->b_ephemer = VLC_TRUE;
    p_subpic->b_fade = VLC_TRUE;
    p_subpic->i_original_picture_width = p_vout->render.i_width * 4;
    p_subpic->i_original_picture_height = p_vout->render.i_height * 4;

    p_subpic->p_region = spu_CreateRegion( p_vout->p_spu, &fmt_out );
    vout_CopyPicture( p_image->p_parent, &p_subpic->p_region->picture, p_pif );
    p_pif->pf_release( p_pif );

    spu_DisplaySubpicture( p_vout->p_spu, p_subpic );

    return VLC_SUCCESS;
}

/*****************************************************************************
 * vout_ControlDefault: default methods for video output control.
 *****************************************************************************/
int vout_vaControlDefault( vout_thread_t *p_vout, int i_query, va_list args )
{
    switch( i_query )
    {
    case VOUT_REPARENT:
    case VOUT_CLOSE:
        if( p_vout->p_parent_intf )
        {
            vlc_object_release( p_vout->p_parent_intf );
            p_vout->p_parent_intf = NULL;
        }
        return VLC_SUCCESS;
        break;

    case VOUT_SNAPSHOT:
        p_vout->b_snapshot = VLC_TRUE;
        return VLC_SUCCESS;
        break;

    default:
        msg_Dbg( p_vout, "control query not supported" );
        return VLC_EGENERIC;
    }
}

/*****************************************************************************
 * Object variables callbacks
 *****************************************************************************/
static int ZoomCallback( vlc_object_t *p_this, char const *psz_cmd,
                         vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    vout_thread_t *p_vout = (vout_thread_t *)p_this;
    vout_Control( p_vout, VOUT_SET_ZOOM, newval.f_float );
    return VLC_SUCCESS;
}

static int OnTopCallback( vlc_object_t *p_this, char const *psz_cmd,
                         vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    vout_thread_t *p_vout = (vout_thread_t *)p_this;
    playlist_t *p_playlist;
    vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, newval.b_bool );

    p_playlist = (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
                                                 FIND_PARENT );
    if( p_playlist )
    {
        /* Modify playlist as well because the vout might have to be restarted */
        var_Create( p_playlist, "video-on-top", VLC_VAR_BOOL );
        var_Set( p_playlist, "video-on-top", newval );

        vlc_object_release( p_playlist );
    }
    return VLC_SUCCESS;
}

static int FullscreenCallback( vlc_object_t *p_this, char const *psz_cmd,
                       vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    vout_thread_t *p_vout = (vout_thread_t *)p_this;
    playlist_t *p_playlist;
    vlc_value_t val;

    p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;

    p_playlist = (playlist_t *)vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
                                                 FIND_PARENT );
    if( p_playlist )
    {
        /* Modify playlist as well because the vout might have to be restarted */
        var_Create( p_playlist, "fullscreen", VLC_VAR_BOOL );
        var_Set( p_playlist, "fullscreen", newval );

        vlc_object_release( p_playlist );
    }

    /* Disable "always on top" in fullscreen mode */
    var_Get( p_vout, "video-on-top", &val );
    if( newval.b_bool && val.b_bool )
    {
        val.b_bool = VLC_FALSE;
        vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, val.b_bool );
    }
    else if( !newval.b_bool && val.b_bool )
    {
        vout_Control( p_vout, VOUT_SET_STAY_ON_TOP, val.b_bool );
    }

    val.b_bool = VLC_TRUE;
    var_Set( p_vout, "intf-change", val );
    return VLC_SUCCESS;
}

static int SnapshotCallback( vlc_object_t *p_this, char const *psz_cmd,
                       vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    vout_thread_t *p_vout = (vout_thread_t *)p_this;
    vout_Control( p_vout, VOUT_SNAPSHOT );
    return VLC_SUCCESS;
}