panoramix.c

VLC Player Source Code

    int i_vout;

    /* Allocate structure */
    p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
    if( p_vout->p_sys == NULL )
        return VLC_ENOMEM;

    p_vout->pf_init = Init;
    p_vout->pf_end = End;
    p_vout->pf_manage = NULL;
/* Color Format not supported
// Planar Y, packed UV
case VLC_FOURCC('Y','M','G','A'):
// Packed YUV 4:2:2, U:Y:V:Y, interlaced
case VLC_FOURCC('I','U','Y','V'):    // packed by 2
// Packed YUV 2:1:1, Y:U:Y:V
case VLC_FOURCC('Y','2','1','1'):     // packed by 4
// Packed YUV Reverted
case VLC_FOURCC('c','y','u','v'):    // packed by 2
*/
    switch (p_vout->render.i_chroma)
    {
    // planar YUV
        case VLC_FOURCC('I','4','4','4'):
        case VLC_FOURCC('I','4','2','2'):
        case VLC_FOURCC('I','4','2','0'):
        case VLC_FOURCC('Y','V','1','2'):
        case VLC_FOURCC('I','Y','U','V'):
        case VLC_FOURCC('I','4','1','1'):
        case VLC_FOURCC('I','4','1','0'):
        case VLC_FOURCC('Y','V','U','9'):
        case VLC_FOURCC('Y','U','V','A'):
            p_vout->pf_render = RenderPlanarYUV;
            break;
    // packed RGB
        case VLC_FOURCC('R','G','B','2'):    // packed by 1
        case VLC_FOURCC('R','V','1','5'):    // packed by 2
        case VLC_FOURCC('R','V','1','6'):    // packed by 2
        case VLC_FOURCC('R','V','2','4'):    // packed by 3
        case VLC_FOURCC('R','V','3','2'):    // packed by 4
            p_vout->pf_render = RenderPackedRGB;
            break;
#ifdef PACKED_YUV
    // packed YUV
        case VLC_FOURCC('Y','U','Y','2'):    // packed by 2
        case VLC_FOURCC('Y','U','N','V'):    // packed by 2
        case VLC_FOURCC('U','Y','V','Y'):    // packed by 2
        case VLC_FOURCC('U','Y','N','V'):    // packed by 2
        case VLC_FOURCC('Y','4','2','2'):    // packed by 2
            p_vout->pf_render = RenderPackedYUV;
            break;
#endif
        default:
            msg_Err( p_vout, "colorspace not supported by plug-in !!!");
            free( p_vout->p_sys );
            return VLC_ENOMEM;
    }
    p_vout->pf_display = NULL;
    p_vout->pf_control = Control;

    config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
                       p_vout->p_cfg );

    /* Look what method was requested */
    p_vout->p_sys->i_col = var_CreateGetInteger( p_vout, CFG_PREFIX "cols" );
    p_vout->p_sys->i_row = var_CreateGetInteger( p_vout, CFG_PREFIX "rows" );

// OS dependent code :  Autodetect number of displays in wall
#ifdef SYS_MINGW32
    if ((p_vout->p_sys->i_col < 0) || (p_vout->p_sys->i_row < 0) )
    {
        int nbMonitors = GetSystemMetrics(SM_CMONITORS);
        if (nbMonitors == 1)
        {
            nbMonitors = 5; // 1 display => 5x1 simulation
            p_vout->p_sys->i_col = nbMonitors;
            p_vout->p_sys->i_row = 1;
        }
        else
        {
            p_vout->p_sys->i_col = GetSystemMetrics( SM_CXVIRTUALSCREEN ) / GetSystemMetrics( SM_CXSCREEN );
            p_vout->p_sys->i_row = GetSystemMetrics( SM_CYVIRTUALSCREEN ) / GetSystemMetrics( SM_CYSCREEN );
            if (p_vout->p_sys->i_col * p_vout->p_sys->i_row != nbMonitors)
            {
                p_vout->p_sys->i_col = nbMonitors;
                p_vout->p_sys->i_row = 1;
            }
        }
        var_SetInteger( p_vout, CFG_PREFIX "cols", p_vout->p_sys->i_col);
        var_SetInteger( p_vout, CFG_PREFIX "rows", p_vout->p_sys->i_row);
    }
#endif

#ifdef OVERLAP
    p_vout->p_sys->i_offset_x = var_CreateGetBool( p_vout, CFG_PREFIX "offset-x" );
    if (p_vout->p_sys->i_col > 2) p_vout->p_sys->i_offset_x = 0; // offset-x is used in case of 2x1 wall & autocrop
    p_vout->p_sys->b_autocrop = !(var_CreateGetInteger( p_vout, "crop-ratio" ) == 0);
    if (!p_vout->p_sys->b_autocrop) p_vout->p_sys->b_autocrop = var_CreateGetInteger( p_vout, "autocrop" );
    p_vout->p_sys->b_attenuate = var_CreateGetBool( p_vout, CFG_PREFIX "attenuate");
    p_vout->p_sys->bz_length = var_CreateGetInteger( p_vout, CFG_PREFIX "bz-length" );
    if (p_vout->p_sys->i_row > 1)
        p_vout->p_sys->bz_height = var_CreateGetInteger( p_vout, CFG_PREFIX "bz-height" );
    else
        p_vout->p_sys->bz_height = 100;
    p_vout->p_sys->bz_begin = var_CreateGetInteger( p_vout, CFG_PREFIX "bz-begin" );
    p_vout->p_sys->bz_middle = var_CreateGetInteger( p_vout, CFG_PREFIX "bz-middle" );
    p_vout->p_sys->bz_end = var_CreateGetInteger( p_vout, CFG_PREFIX "bz-end" );
    p_vout->p_sys->bz_middle_pos = var_CreateGetInteger( p_vout, CFG_PREFIX "bz-middle-pos" );
    double d_p = 100.0 / p_vout->p_sys->bz_middle_pos;
    p_vout->p_sys->i_ratio_max = var_CreateGetInteger( p_vout, "autocrop-ratio-max" ); // in crop module with autocrop ...
    p_vout->p_sys->i_ratio = var_CreateGetInteger( p_vout, "crop-ratio" ); // in crop module with manual ratio ...

    p_vout->p_sys->a_2 = d_p * p_vout->p_sys->bz_begin - (double)(d_p * d_p / (d_p - 1)) * p_vout->p_sys->bz_middle + (double)(d_p / (d_p - 1)) * p_vout->p_sys->bz_end;
    p_vout->p_sys->a_1 = -(d_p + 1) * p_vout->p_sys->bz_begin + (double)(d_p * d_p / (d_p - 1)) * p_vout->p_sys->bz_middle - (double)(1 / (d_p - 1)) * p_vout->p_sys->bz_end;
    p_vout->p_sys->a_0 =  p_vout->p_sys->bz_begin;

#ifdef GAMMA
    p_vout->p_sys->f_gamma_red = var_CreateGetFloat( p_vout, CFG_PREFIX "bz-gamma-red" );
    p_vout->p_sys->f_gamma_green = var_CreateGetFloat( p_vout, CFG_PREFIX "bz-gamma-green" );
    p_vout->p_sys->f_gamma_blue = var_CreateGetFloat( p_vout, CFG_PREFIX "bz-gamma-blue" );
#endif
#ifndef SYS_MINGW32
    p_vout->p_sys->b_xinerama = var_CreateGetBool( p_vout, CFG_PREFIX "xinerama" );
#endif
#else
    p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
    p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
#endif

    msg_Dbg( p_vout, "opening a %i x %i wall",
             p_vout->p_sys->i_col, p_vout->p_sys->i_row );

    p_vout->p_sys->pp_vout = calloc( p_vout->p_sys->i_row *
                                     p_vout->p_sys->i_col,
                                     sizeof(struct vout_list_t) );
    if( p_vout->p_sys->pp_vout == NULL )
    {
        free( p_vout->p_sys );
        return VLC_ENOMEM;
    }

    psz_method_tmp =
    psz_method = var_CreateGetNonEmptyString( p_vout, CFG_PREFIX "active" );

    /* If no trailing vout are specified, take them all */
    if( psz_method == NULL )
    {
        for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
             i_vout--; )
        {
            p_vout->p_sys->pp_vout[i_vout].b_active = 1;
        }
    }
    /* If trailing vout are specified, activate only the requested ones */
    else
    {
        for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
             i_vout--; )
        {
            p_vout->p_sys->pp_vout[i_vout].b_active = 0;
        }

        while( *psz_method )
        {
            psz_tmp = psz_method;
            while( *psz_tmp && *psz_tmp != ',' )
            {
                psz_tmp++;
            }

            if( *psz_tmp )
            {
                *psz_tmp = '\0';
                i_vout = atoi( psz_method );
                psz_method = psz_tmp + 1;
            }
            else
            {
                i_vout = atoi( psz_method );
                psz_method = psz_tmp;
            }

            if( i_vout >= 0 &&
                i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
            {
                p_vout->p_sys->pp_vout[i_vout].b_active = 1;
            }
        }
    }

    free( psz_method_tmp );

    return VLC_SUCCESS;
}


#ifdef OVERLAP
/*****************************************************************************
 * CLIP_0A: clip between 0 and ACCURACY
 *****************************************************************************/
inline static int CLIP_0A( int a )
{
    return (a > ACCURACY) ? ACCURACY : (a < 0) ? 0 : a;
}

#ifdef GAMMA
/*****************************************************************************
 *  Gamma: Gamma correction
 *****************************************************************************/
static double Gamma_Correction(int i_plane, float f_component, float f_BlackCrush[VOUT_MAX_PLANES], float f_WhiteCrush[VOUT_MAX_PLANES], float f_BlackLevel[VOUT_MAX_PLANES], float f_WhiteLevel[VOUT_MAX_PLANES], float f_Gamma[VOUT_MAX_PLANES])
{
    float f_Input;

    f_Input = (f_component * f_BlackLevel[i_plane]) / (f_BlackCrush[i_plane]) + (1.0 - f_BlackLevel[i_plane]);
    if (f_component <= f_BlackCrush[i_plane])
    {
        return pow(f_Input, 1.0 / f_Gamma[i_plane]);
    }
    else if (f_component >= f_WhiteCrush[i_plane])
    {
        f_Input = (f_component * (1.0 - (f_WhiteLevel[i_plane] + 1.0)) + (f_WhiteLevel[i_plane] + 1.0) * f_WhiteCrush[i_plane] - 1.0) / (f_WhiteCrush[i_plane] - 1.0);
        return pow(f_Input, 1.0 / f_Gamma[i_plane]);
    }
    else
    {
        return 1.0;
    }
}

#ifdef PACKED_YUV

/*****************************************************************************
 * F: Function to calculate Gamma correction
 *****************************************************************************/
static uint8_t F(uint8_t i, float gamma)
{
    double input = (double) i / 255.0;

    // return clip(255 * pow(input, 1.0 / gamma));

    if (input < 0.5)
        return clip_uint8((255 * pow(2 * input, gamma)) / 2);
    else
        return clip_uint8(255 * (1 - pow(2 * (1 - input), gamma) / 2));
}
#endif
#endif

/*****************************************************************************
 * AdjustHeight: ajust p_sys->i_height to have same BZ width for any ratio
 *****************************************************************************/
static int AdjustHeight( vout_thread_t *p_vout )
{
    bool b_fullscreen = p_vout->b_fullscreen;
    int i_window_width = p_vout->i_window_width;
    int i_window_height = p_vout->i_window_height;
    double d_halfLength = 0;
    double d_halfLength_crop;
    double d_halfLength_calculated;
    int    i_offset = 0;

    // OS DEPENDENT CODE to get display dimensions
    if (b_fullscreen )
    {
#ifdef SYS_MINGW32
        i_window_width  = GetSystemMetrics(SM_CXSCREEN);
        i_window_height = GetSystemMetrics(SM_CYSCREEN);
#else
        Display *p_display = XOpenDisplay( "" );
        if (p_vout->p_sys->b_xinerama)
        {
            i_window_width = DisplayWidth(p_display, 0) / p_vout->p_sys->i_col;
            i_window_height = DisplayHeight(p_display, 0) / p_vout->p_sys->i_row;
        }
        else
        {
            i_window_width = DisplayWidth(p_display, 0);
            i_window_height = DisplayHeight(p_display, 0);
        }
        XCloseDisplay( p_display );
#endif
        var_SetInteger( p_vout, "width", i_window_width);
        var_SetInteger( p_vout, "height", i_window_height);
        p_vout->i_window_width = i_window_width;
        p_vout->i_window_height = i_window_height;
    }

    if( p_vout->p_sys->bz_length)
        if ((!p_vout->p_sys->b_autocrop) && (!p_vout->p_sys->i_ratio))
        {
            if ((p_vout->p_sys->i_row > 1) || (p_vout->p_sys->i_col > 1))
            {