fb.c

VLC Player Source Code

        vt_mode.relsig = SIGUSR1;
        vt_mode.acqsig = SIGUSR2;

        if( -1 == ioctl( p_sys->i_tty, VT_SETMODE, &vt_mode ) )
        {
            msg_Err( p_vout, "cannot set terminal mode (%m)" );
            sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
            sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
            tcsetattr(0, 0, &p_vout->p_sys->old_termios);
            TextMode( p_sys->i_tty );
            free( p_vout->p_sys );
            return VLC_EGENERIC;
        }
    }

    if( OpenDisplay( p_vout ) )
    {
        if( p_sys->b_tty )
        {
            ioctl( p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );
            sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
            sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );
            tcsetattr(0, 0, &p_vout->p_sys->old_termios);
            TextMode( p_sys->i_tty );
        }
        free( p_vout->p_sys );
        return VLC_EGENERIC;
    }

    return VLC_SUCCESS;
}


/*****************************************************************************
 * Destroy: destroy FB video thread output method
 *****************************************************************************
 * Terminate an output method created by Create
 *****************************************************************************/
static void Destroy( vlc_object_t *p_this )
{
    vout_thread_t *p_vout = (vout_thread_t *)p_this;

    CloseDisplay( p_vout );

    if( p_vout->p_sys->b_tty )
    {
        /* Reset the terminal */
        ioctl( p_vout->p_sys->i_tty, VT_SETMODE, &p_vout->p_sys->vt_mode );

        /* Remove signal handlers */
        sigaction( SIGUSR1, &p_vout->p_sys->sig_usr1, NULL );
        sigaction( SIGUSR2, &p_vout->p_sys->sig_usr2, NULL );

        /* Reset the keyboard state */
        tcsetattr( 0, 0, &p_vout->p_sys->old_termios );

        /* Return to text mode */
        TextMode( p_vout->p_sys->i_tty );
    }

    /* Destroy structure */
    free( p_vout->p_sys );
}

/*****************************************************************************
 * NewPicture: allocate a picture
 *****************************************************************************
 * Returns 0 on success, -1 otherwise
 *****************************************************************************/
static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
    /* We know the chroma, allocate a buffer which will be used
     * directly by the decoder */
    p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
    if( p_pic->p_sys == NULL )
    {
        return VLC_ENOMEM;
    }

    /* Fill in picture_t fields */
    vout_InitPicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
                      p_vout->output.i_width, p_vout->output.i_height,
                      p_vout->output.i_aspect );

    p_pic->p_sys->p_data = malloc( p_vout->p_sys->i_page_size );
    if( !p_pic->p_sys->p_data )
    {
        free( p_pic->p_sys );
        p_pic->p_sys = NULL;
        return VLC_ENOMEM;
    }

    p_pic->p->p_pixels = (uint8_t*) p_pic->p_sys->p_data;

    p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
    p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
    p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;

    if( p_vout->p_sys->var_info.xres_virtual )
    {
        p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
                             * p_vout->p_sys->i_bytes_per_pixel;
    }
    else
    {
        p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
                             * p_vout->p_sys->i_bytes_per_pixel;
    }

    p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
                                 * p_vout->p_sys->i_bytes_per_pixel;
    p_pic->i_planes = 1;

    return VLC_SUCCESS;
}

/*****************************************************************************
 * FreePicture: destroy a picture allocated with NewPicture
 *****************************************************************************
 * Destroy Image AND associated data.
 *****************************************************************************/
static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
{
    free( p_pic->p_sys->p_data );
    free( p_pic->p_sys );
    p_pic->p_sys = NULL;
}

/*****************************************************************************
 * Init: initialize framebuffer video thread output method
 *****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
    vout_sys_t *p_sys = p_vout->p_sys;
    int i_index;
    picture_t *p_pic = NULL;

    I_OUTPUTPICTURES = 0;

    p_vout->output.i_width  = p_vout->render.i_width;
    p_vout->output.i_height = p_vout->render.i_height;
    p_vout->output.i_aspect = p_vout->render.i_aspect;

    p_vout->fmt_out = p_vout->fmt_in;
    if( p_sys->i_chroma == 0 )
    {
        /* Initialize the output structure: RGB with square pixels, whatever
         * the input format is, since it's the only format we know */
        switch( p_sys->var_info.bits_per_pixel )
        {
        case 8: /* FIXME: set the palette */
            p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
        case 15:
            p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
        case 16:
            p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
        case 24:
            p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
        case 32:
            p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
        default:
            msg_Err( p_vout, "unknown screen depth %i",
                     p_vout->p_sys->var_info.bits_per_pixel );
            return VLC_EGENERIC;
        }

        if( p_sys->var_info.bits_per_pixel != 8 )
        {
            p_vout->output.i_rmask = ( (1 << p_sys->var_info.red.length) - 1 )
                                 << p_sys->var_info.red.offset;
            p_vout->output.i_gmask = ( (1 << p_sys->var_info.green.length) - 1 )
                                 << p_sys->var_info.green.offset;
            p_vout->output.i_bmask = ( (1 << p_sys->var_info.blue.length) - 1 )
                                 << p_sys->var_info.blue.offset;
        }
    }
    else
    {
        p_vout->output.i_chroma = p_sys->i_chroma;
    }
    p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;

    p_vout->output.i_width =
    p_vout->fmt_out.i_width =
    p_vout->fmt_out.i_visible_width = p_sys->i_width;
    p_vout->output.i_height =
    p_vout->fmt_out.i_height =
    p_vout->fmt_out.i_visible_height = p_sys->i_height;

    /* Assume we have square pixels */
    if( p_sys->i_aspect < 0 )
    {
        p_vout->output.i_aspect = ( p_sys->i_width
                                  * VOUT_ASPECT_FACTOR ) / p_sys->i_height;
    }
    else p_vout->output.i_aspect = p_sys->i_aspect;

    p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_sar_den = 1;
    p_vout->fmt_out.i_aspect  = p_vout->render.i_aspect = p_vout->output.i_aspect;
    p_vout->fmt_out.i_x_offset= p_vout->fmt_out.i_y_offset = 0;

    /* Clear the screen */
    memset( p_sys->p_video, 0, p_sys->i_page_size );

    if( !p_sys->b_hw_accel )
    {
        /* Try to initialize up to MAX_DIRECTBUFFERS direct buffers */
        while( I_OUTPUTPICTURES < MAX_DIRECTBUFFERS )
        {
            p_pic = NULL;

            /* Find an empty picture slot */
            for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
            {
            if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
                {
                    p_pic = p_vout->p_picture + i_index;
                    break;
                }
            }

            /* Allocate the picture */
            if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
            {
                break;
            }

            p_pic->i_status = DESTROYED_PICTURE;
            p_pic->i_type   = DIRECT_PICTURE;

            PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;

            I_OUTPUTPICTURES++;
        }
    }
    else
    {
        /* Try to initialize 1 direct buffer */
        p_pic = NULL;

        /* Find an empty picture slot */
        for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
        {
            if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
            {
                p_pic = p_vout->p_picture + i_index;
                break;
            }
        }

        /* Allocate the picture */
        if( p_pic == NULL )
        {
            return VLC_EGENERIC;
        }

        /* We know the chroma, allocate a buffer which will be used
        * directly by the decoder */
        p_pic->p->p_pixels = p_vout->p_sys->p_video;
        p_pic->p->i_pixel_pitch = p_vout->p_sys->i_bytes_per_pixel;
        p_pic->p->i_lines = p_vout->p_sys->var_info.yres;
        p_pic->p->i_visible_lines = p_vout->p_sys->var_info.yres;

        if( p_vout->p_sys->var_info.xres_virtual )
        {
            p_pic->p->i_pitch = p_vout->p_sys->var_info.xres_virtual
                                * p_vout->p_sys->i_bytes_per_pixel;
        }
        else
        {
            p_pic->p->i_pitch = p_vout->p_sys->var_info.xres
                                * p_vout->p_sys->i_bytes_per_pixel;
        }

        p_pic->p->i_visible_pitch = p_vout->p_sys->var_info.xres
                                    * p_vout->p_sys->i_bytes_per_pixel;
        p_pic->i_planes = 1;
        p_pic->i_status = DESTROYED_PICTURE;
        p_pic->i_type   = DIRECT_PICTURE;

        PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;

        I_OUTPUTPICTURES++;
    }

    return VLC_SUCCESS;
}

/*****************************************************************************
 * End: terminate framebuffer video thread output method
 *****************************************************************************/
static void End( vout_thread_t *p_vout )
{
    if( !p_vout->p_sys->b_hw_accel )
    {
        int i_index;

        /* Free the direct buffers we allocated */
        for( i_index = I_OUTPUTPICTURES ; i_index ; )
        {
            i_index--;
            FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
        }

    }
    /* Clear the screen */
    memset( p_vout->p_sys->p_video, 0, p_vout->p_sys->i_page_size );
}

/*****************************************************************************
 * Control: control facility for the vout
 *****************************************************************************/
static int Control( vout_thread_t *p_vout, int i_query, va_list args )
{
    switch( i_query )
    {
       default:
            return vout_vaControlDefault( p_vout, i_query, args );
    }
}

/*****************************************************************************
 * Manage: handle FB events
 *****************************************************************************
 * This function should be called regularly by video output thread. It manages
 * console events. It returns a non null value on error.
 *****************************************************************************/
static int Manage( vout_thread_t *p_vout )
{
#if 0
    uint8_t buf;

    if ( read(0, &buf, 1) == 1)
    {
        switch( buf )
        {
        case 'q':
            vlc_object_kill( p_vout->p_libvlc );
            break;

        default:
            break;
        }
    }
#endif