fbosd.c

VLC Player Source Code

    p_sys->i_height = p_sys->fmt_out.i_height = 576;

    psz_tmp = var_CreateGetNonEmptyStringCommand( p_intf, "fbosd-image" );
    var_AddCallback( p_intf, "fbosd-image", OverlayCallback, NULL );
    if( psz_tmp && *psz_tmp )
    {
        p_sys->render[0].i_type = FBOSD_RENDER_IMAGE;
        p_sys->render[0].i_state = FBOSD_STATE_RENDER;
        p_sys->render[0].psz_string = strdup( psz_tmp );
    }
    free( psz_tmp );

    psz_tmp = var_CreateGetNonEmptyStringCommand( p_intf, "fbosd-text" );
    var_AddCallback( p_intf, "fbosd-text", OverlayCallback, NULL );
    if( psz_tmp && *psz_tmp )
    {
        p_sys->render[1].i_type = FBOSD_RENDER_TEXT;
        p_sys->render[1].i_state = FBOSD_STATE_RENDER;
        p_sys->render[1].psz_string = strdup( psz_tmp );
    }
    free( psz_tmp );

    p_sys->i_pos = var_CreateGetIntegerCommand( p_intf, "fbosd-position" );
    p_sys->i_x = var_CreateGetIntegerCommand( p_intf, "fbosd-x" );
    p_sys->i_y = var_CreateGetIntegerCommand( p_intf, "fbosd-y" );

    var_AddCallback( p_intf, "fbosd-position", OverlayCallback, NULL );
    var_AddCallback( p_intf, "fbosd-x", OverlayCallback, NULL );
    var_AddCallback( p_intf, "fbosd-y", OverlayCallback, NULL );

    p_sys->p_style->i_font_size =
            var_CreateGetIntegerCommand( p_intf, "fbosd-font-size" );
    p_sys->p_style->i_font_color =
            var_CreateGetIntegerCommand( p_intf, "fbosd-font-color" );
    p_sys->p_style->i_font_alpha = 255 -
            var_CreateGetIntegerCommand( p_intf, "fbosd-font-opacity" );

    var_AddCallback( p_intf, "fbosd-font-color", OverlayCallback, NULL );
    var_AddCallback( p_intf, "fbosd-font-size", OverlayCallback, NULL );
    var_AddCallback( p_intf, "fbosd-font-opacity", OverlayCallback, NULL );

    for( i = 0; i < FBOSD_RENDER_MAX; i++ )
    {
        vlc_memcpy( &p_sys->render[i].text_style, &default_text_style,
                    sizeof( text_style_t ) );
    }

    p_sys->b_clear = var_CreateGetBoolCommand( p_intf, "fbosd-clear" );
    p_sys->b_render = var_CreateGetBoolCommand( p_intf, "fbosd-render" );
    p_sys->b_need_update = var_CreateGetBoolCommand( p_intf, "fbosd-display" );

    var_AddCallback( p_intf, "fbosd-clear", OverlayCallback, NULL );
    var_AddCallback( p_intf, "fbosd-render", OverlayCallback, NULL );
    var_AddCallback( p_intf, "fbosd-display", OverlayCallback, NULL );

    /* Check if picture position was overridden */
    p_sys->b_absolute = true;
    if( ( p_sys->i_x >= 0 ) && ( p_sys->i_y >= 0 ) )
    {
        p_sys->b_absolute = false;
        p_sys->i_y = (p_sys->i_y < p_sys->i_height) ?
                        p_sys->i_y : p_sys->i_height;
        p_sys->i_x = (p_sys->i_x < p_sys->i_width) ?
                        p_sys->i_x : p_sys->i_width;
    }

    p_sys->render[0].i_x = p_sys->render[1].i_x = p_sys->i_x;
    p_sys->render[0].i_y = p_sys->render[1].i_y = p_sys->i_y;
    p_sys->render[0].i_pos = p_sys->render[1].i_pos = p_sys->i_pos;
    p_sys->render[0].i_alpha = p_sys->render[1].i_alpha = p_sys->i_alpha;

    /* Initialize framebuffer */
    if( OpenDisplay( p_intf ) )
    {
        Destroy( VLC_OBJECT(p_intf) );
        return VLC_EGENERIC;
    }

    Init( p_intf );

#if defined(FBOSD_BLENDING)
    /* Load the blending module */
    if( OpenBlending( p_intf ) )
    {
        msg_Err( p_intf, "Unable to load image blending module" );
        Destroy( VLC_OBJECT(p_intf) );
        return VLC_EGENERIC;
    }
#endif

    /* Load text renderer module */
    if( OpenTextRenderer( p_intf ) )
    {
        msg_Err( p_intf, "Unable to load text rendering module" );
        Destroy( VLC_OBJECT(p_intf) );
        return VLC_EGENERIC;
    }

    p_sys->b_render = true;
    p_sys->b_need_update = true;

    return VLC_SUCCESS;
}

/*****************************************************************************
 * Destroy: destroy FB interface thread output method
 *****************************************************************************
 * Terminate an output method created by Create
 *****************************************************************************/
static void Destroy( vlc_object_t *p_this )
{
    intf_thread_t *p_intf = (intf_thread_t *)p_this;
    intf_sys_t *p_sys = (intf_sys_t *) p_intf->p_sys;
    int i;

    p_sys->b_need_update = false;
    p_sys->b_render = false;
    p_sys->b_clear = false;

    var_DelCallback( p_intf, "fbosd-alpha", OverlayCallback, NULL );
    var_Destroy( p_intf, "fbosd-alpha" );

    var_DelCallback( p_intf, "fbosd-x", OverlayCallback, NULL );
    var_DelCallback( p_intf, "fbosd-y", OverlayCallback, NULL );
    var_DelCallback( p_intf, "fbosd-position", OverlayCallback, NULL );
    var_DelCallback( p_intf, "fbosd-image", OverlayCallback, NULL );
    var_DelCallback( p_intf, "fbosd-text", OverlayCallback, NULL );
    var_DelCallback( p_intf, "fbosd-font-size", OverlayCallback, NULL );
    var_DelCallback( p_intf, "fbosd-font-color", OverlayCallback, NULL );
    var_DelCallback( p_intf, "fbosd-font-opacity", OverlayCallback, NULL );
    var_DelCallback( p_intf, "fbosd-clear", OverlayCallback, NULL );
    var_DelCallback( p_intf, "fbosd-render", OverlayCallback, NULL );
    var_DelCallback( p_intf, "fbosd-display", OverlayCallback, NULL );

    var_Destroy( p_intf, "fbosd-x" );
    var_Destroy( p_intf, "fbosd-y" );
    var_Destroy( p_intf, "fbosd-position" );
    var_Destroy( p_intf, "fbosd-image" );
    var_Destroy( p_intf, "fbosd-text" );
    var_Destroy( p_intf, "fbosd-font-size" );
    var_Destroy( p_intf, "fbosd-font-color" );
    var_Destroy( p_intf, "fbosd-font-opacity" );
    var_Destroy( p_intf, "fbosd-clear" );
    var_Destroy( p_intf, "fbosd-render" );
    var_Destroy( p_intf, "fbosd-display" );

    var_Destroy( p_intf, "fbosd-aspect-ratio" );

    CloseDisplay( p_intf );

    for( i = 0; i < FBOSD_RENDER_MAX; i++ )
    {
        free( p_sys->render[i].psz_string );
        p_sys->render[i].i_state = FBOSD_STATE_FREE;
    }

#if defined(FBOSD_BLENDING)
    if( p_sys->p_blend ) CloseBlending( p_intf );
#endif
    if( p_sys->p_text )  CloseTextRenderer( p_intf );

    if( p_sys->p_image )
        image_HandlerDelete( p_sys->p_image );
    if( p_sys->p_overlay )
        picture_Release( p_sys->p_overlay );

    free( p_sys->p_style );
    free( p_sys );
}

#if defined(FBOSD_BLENDING)
static int OpenBlending( intf_thread_t *p_intf )
{
    if( p_intf->p_sys->p_blend ) return VLC_EGENERIC;

    p_intf->p_sys->p_blend =
            vlc_object_create( p_intf, sizeof(filter_t) );
    vlc_object_attach( p_intf->p_sys->p_blend, p_intf );
    p_intf->p_sys->p_blend->fmt_out.video.i_x_offset =
        p_intf->p_sys->p_blend->fmt_out.video.i_y_offset = 0;
    p_intf->p_sys->p_blend->fmt_out.video.i_aspect =
            p_intf->p_sys->fmt_out.i_aspect;
    p_intf->p_sys->p_blend->fmt_out.video.i_chroma =
            p_intf->p_sys->fmt_out.i_chroma;
    if( config_GetInt( p_intf, "freetype-yuvp" ) )
        p_intf->p_sys->p_blend->fmt_in.video.i_chroma =
                VLC_FOURCC('Y','U','V','P');
    else
        p_intf->p_sys->p_blend->fmt_in.video.i_chroma =
                VLC_FOURCC('Y','U','V','A');

    p_intf->p_sys->p_blend->p_module =
        module_Need( p_intf->p_sys->p_blend, "video blending", 0, 0 );

    if( !p_intf->p_sys->p_blend->p_module )
        return VLC_EGENERIC;

    return VLC_SUCCESS;
}

static void CloseBlending( intf_thread_t *p_intf )
{
    if( p_intf->p_sys->p_blend )
    {
        if( p_intf->p_sys->p_blend->p_module )
            module_Unneed( p_intf->p_sys->p_blend,
                           p_intf->p_sys->p_blend->p_module );

        vlc_object_detach( p_intf->p_sys->p_blend );
        vlc_object_release( p_intf->p_sys->p_blend );
    }
}
#endif

static int OpenTextRenderer( intf_thread_t *p_intf )
{
    char *psz_modulename = NULL;

    if( p_intf->p_sys->p_text ) return VLC_EGENERIC;

    p_intf->p_sys->p_text =
            vlc_object_create( p_intf, sizeof(filter_t) );
    vlc_object_attach( p_intf->p_sys->p_text, p_intf );

    p_intf->p_sys->p_text->fmt_out.video.i_width =
        p_intf->p_sys->p_text->fmt_out.video.i_visible_width =
        p_intf->p_sys->i_width;
    p_intf->p_sys->p_text->fmt_out.video.i_height =
        p_intf->p_sys->p_text->fmt_out.video.i_visible_height =
        p_intf->p_sys->i_height;

    psz_modulename = var_CreateGetString( p_intf, "text-renderer" );
    if( psz_modulename && *psz_modulename )
    {
        p_intf->p_sys->p_text->p_module =
            module_Need( p_intf->p_sys->p_text, "text renderer",
                            psz_modulename, true );
    }
    if( !p_intf->p_sys->p_text->p_module )
    {
        p_intf->p_sys->p_text->p_module =
            module_Need( p_intf->p_sys->p_text, "text renderer", 0, 0 );
    }
    free( psz_modulename );

    if( !p_intf->p_sys->p_text->p_module )
        return VLC_EGENERIC;

    return VLC_SUCCESS;
}

static void CloseTextRenderer( intf_thread_t *p_intf )
{
    if( p_intf->p_sys->p_text )
    {
        if( p_intf->p_sys->p_text->p_module )
            module_Unneed( p_intf->p_sys->p_text,
                           p_intf->p_sys->p_text->p_module );

        vlc_object_detach( p_intf->p_sys->p_text );
        vlc_object_release( p_intf->p_sys->p_text );
    }
}

/*****************************************************************************
 * AllocatePicture:
 * allocate a picture buffer for use with the overlay fb.
 *****************************************************************************/
static picture_t *AllocatePicture( vlc_object_t *p_this,
                                   video_format_t *p_fmt )
{
    picture_t *p_picture = picture_New( p_fmt->i_chroma,
                                        p_fmt->i_width, p_fmt->i_height,
                                        p_fmt->i_aspect );
    if( !p_picture )
        return NULL;

    if( !p_fmt->p_palette &&
        ( p_fmt->i_chroma == VLC_FOURCC('Y','U','V','P') ) )
    {
        p_fmt->p_palette = malloc( sizeof(video_palette_t) );
        if( !p_fmt->p_palette )
        {
            picture_Release( p_picture );
            return NULL;
        }
    }
    else
    {
        p_fmt->p_palette = NULL;
    }

    return p_picture;
}

/*****************************************************************************
 * DeAllocatePicture:
 * Deallocate a picture buffer and free all associated memory.
 *****************************************************************************/
static void DeAllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
                               video_format_t *p_fmt )
{
    VLC_UNUSED(p_this);

    if( p_fmt )
    {
        free( p_fmt->p_palette );
        p_fmt->p_palette = NULL;
    }

    if( p_pic )
        picture_Release( p_pic );
}

/*****************************************************************************
 * SetOverlayTransparency: Set the transparency for this overlay fb,
 * - true is make transparent
 * - false is make non tranparent
 *****************************************************************************/
static void SetOverlayTransparency( intf_thread_t *p_intf,
                                    bool b_transparent )
{
    intf_sys_t *p_sys = (intf_sys_t *) p_intf->p_sys;
    size_t i_size = p_sys->fmt_out.i_width * p_sys->fmt_out.i_height
                        * p_sys->i_bytes_per_pixel;
    size_t i_page_size = (p_sys->i_page_size > i_size) ?
                            i_size : p_sys->i_page_size;

    if( p_sys->p_overlay )
    {
        msg_Dbg( p_intf, "Make overlay %s",
                 b_transparent ? "transparent" : "opaque" );
        if( b_transparent )
            memset( p_sys->p_overlay->p[0].p_pixels, 0xFF, i_page_size );
        else
            memset( p_sys->p_overlay->p[0].p_pixels, 0x00, i_page_size );
    }
}

#if defined(FBOSD_BLENDING)
/*****************************************************************************
 * BlendPicture: Blend two pictures together..
 *****************************************************************************/
static int BlendPicture( intf_thread_t *p_intf, video_format_t *p_fmt_src,
                         video_format_t *p_fmt_dst, picture_t *p_pic_src,
                         picture_t *p_pic_dst )
{
    intf_sys_t *p_sys = (intf_sys_t *) p_intf->p_sys;
    if( p_sys->p_blend && p_sys->p_blend->p_module )
    {
        int i_x_offset = p_sys->i_x;
        int i_y_offset = p_sys->i_y;

        memcpy( &p_sys->p_blend->fmt_in.video, p_fmt_src, sizeof( video_format_t ) );

        /* Update the output picture size */
        p_sys->p_blend->fmt_out.video.i_width =
            p_sys->p_blend->fmt_out.video.i_visible_width =
                p_fmt_dst->i_width;