xrdp-proprietary/libxrdp/xrdp_orders.c

/**
 * xrdp: A Remote Desktop Protocol server.
 *
 * Copyright (C) Jay Sorg 2004-2013
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * orders
 */

#include "libxrdp.h"

#if defined(XRDP_NEUTRINORDP)
#include <freerdp/codec/rfx.h>
#endif

#define LLOG_LEVEL 2
#define LLOGLN(_log_level, _params) \
    { \
        if (_log_level < LLOG_LEVEL) \
        { \
            g_write("xrdp_orders.c [%10.10u]: ", g_time3()); \
            g_writeln _params ; \
        } \
    }

#define MAX_ORDERS_SIZE (16 * 1024 - 256)

/*****************************************************************************/
struct xrdp_orders *APP_CC
xrdp_orders_create(struct xrdp_session *session, struct xrdp_rdp *rdp_layer)
{
    struct xrdp_orders *self;

    self = (struct xrdp_orders *)g_malloc(sizeof(struct xrdp_orders), 1);
    self->session = session;
    self->rdp_layer = rdp_layer;
    make_stream(self->out_s);
    init_stream(self->out_s, 32 * 1024);
    self->orders_state.clip_right = 1; /* silly rdp right clip */
    self->orders_state.clip_bottom = 1; /* silly rdp bottom clip */
    self->jpeg_han = xrdp_jpeg_init();
    self->rfx_min_pixel = rdp_layer->client_info.rfx_min_pixel;
    if (self->rfx_min_pixel == 0)
    {
        self->rfx_min_pixel = 64 * 32;
    }
    make_stream(self->s);
    make_stream(self->temp_s);
    return self;
}

/*****************************************************************************/
void APP_CC
xrdp_orders_delete(struct xrdp_orders *self)
{
    if (self == 0)
    {
        return;
    }
    xrdp_jpeg_deinit(self->jpeg_han);
    free_stream(self->out_s);
    free_stream(self->s);
    free_stream(self->temp_s);
    g_free(self->orders_state.text_data);
    g_free(self);
}

/*****************************************************************************/
/* set all values to zero */
/* returns error */
int APP_CC
xrdp_orders_reset(struct xrdp_orders *self)
{
    if (xrdp_orders_force_send(self) != 0)
    {
        return 1;
    }
    g_free(self->orders_state.text_data);
    g_memset(&(self->orders_state), 0, sizeof(self->orders_state));
    self->order_count_ptr = 0;
    self->order_count = 0;
    self->order_level = 0;
    self->orders_state.clip_right = 1; /* silly rdp right clip */
    self->orders_state.clip_bottom = 1; /* silly rdp bottom clip */
    return 0;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_init(struct xrdp_orders *self)
{
    self->order_level++;
    if (self->order_level == 1)
    {
        self->order_count = 0;
        if (self->rdp_layer->client_info.use_fast_path & 1)
        {
            LLOGLN(10, ("xrdp_orders_init: fastpath"));
            if (xrdp_rdp_init_fastpath(self->rdp_layer, self->out_s) != 0)
            {
                return 1;
            }
            self->order_count_ptr = self->out_s->p;
            out_uint8s(self->out_s, 2); /* number of orders, set later */
        }
        else
        {
            LLOGLN(10, ("xrdp_orders_init: slowpath"));
            if (xrdp_rdp_init_data(self->rdp_layer, self->out_s) != 0)
            {
                return 1;
            }
            out_uint16_le(self->out_s, RDP_UPDATE_ORDERS);
            out_uint8s(self->out_s, 2); /* pad */
            self->order_count_ptr = self->out_s->p;
            out_uint8s(self->out_s, 2); /* number of orders, set later */
            out_uint8s(self->out_s, 2); /* pad */
        }
    }
    return 0;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_send(struct xrdp_orders *self)
{
    int rv;

    rv = 0;
    if (self->order_level > 0)
    {
        self->order_level--;
        if ((self->order_level == 0) && (self->order_count > 0))
        {
            s_mark_end(self->out_s);
            DEBUG(("xrdp_orders_send sending %d orders", self->order_count));
            self->order_count_ptr[0] = self->order_count;
            self->order_count_ptr[1] = self->order_count >> 8;
            self->order_count = 0;
            if (self->rdp_layer->client_info.use_fast_path & 1)
            {
                if (xrdp_rdp_send_fastpath(self->rdp_layer,
                                           self->out_s, 0) != 0)
                {
                    rv = 1;
                }
            }
            else
            {
                if (xrdp_rdp_send_data(self->rdp_layer, self->out_s,
                                       RDP_DATA_PDU_UPDATE) != 0)
                {
                    rv = 1;
                }
            }
        }
    }
    return rv;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_force_send(struct xrdp_orders *self)
{
    if (self == 0)
    {
        return 1;
    }
    if ((self->order_level > 0) && (self->order_count > 0))
    {
        s_mark_end(self->out_s);
        DEBUG(("xrdp_orders_force_send sending %d orders", self->order_count));
        self->order_count_ptr[0] = self->order_count;
        self->order_count_ptr[1] = self->order_count >> 8;
        if (self->rdp_layer->client_info.use_fast_path & 1)
        {
            if (xrdp_rdp_send_fastpath(self->rdp_layer,
                                       self->out_s, FASTPATH_UPDATETYPE_ORDERS) != 0)
            {
                return 1;
            }
        }
        else
        {
            if (xrdp_rdp_send_data(self->rdp_layer, self->out_s,
                                   RDP_DATA_PDU_UPDATE) != 0)
            {
                return 1;
            }
        }
    }
    self->order_count = 0;
    self->order_level = 0;
    return 0;
}

/*****************************************************************************/
/* check if the current order will fit in packet size of 16384, if not */
/* send what we got and init a new one */
/* returns error */
int APP_CC
xrdp_orders_check(struct xrdp_orders *self, int max_size)
{
    int size;
    int max_packet_size;

    max_packet_size = MAX_ORDERS_SIZE;

    if (self->order_level < 1)
    {
        if (max_size > max_packet_size)
        {
            return 1;
        }
        else
        {
            xrdp_orders_init(self);
            return 0;
        }
    }

    size = (int)(self->out_s->p - self->order_count_ptr);
    if (size < 0)
    {
        g_writeln("error in xrdp_orders_check, size too small: %d bytes", size);
        return 1;
    }
    if (size > max_packet_size)
    {
        /* this suggests someone calls this function without passing the
           correct max_size so we end up putting more into the buffer
           than we indicate we can */
        g_writeln("error in xrdp_orders_check, size too big: %d bytes", size);
        /* We where getting called with size already greater than
           max_packet_size
           Which I suspect was because the sending of text did not include
           the text len to check the buffer size. So attempt to send the data
           anyway.
           Lets write the data anyway, somewhere else may barf. */
        /*    return 1; */
    }

    if ((size + max_size + 100) > max_packet_size)
    {
        xrdp_orders_force_send(self);
        xrdp_orders_init(self);
    }

    return 0;
}

/*****************************************************************************/
/* check if rect is the same as the last one sent */
/* returns boolean */
static int APP_CC
xrdp_orders_last_bounds(struct xrdp_orders *self, struct xrdp_rect *rect)
{
    if (rect == 0)
    {
        return 0;
    }

    if ((rect->left == self->orders_state.clip_left) &&
            (rect->top == self->orders_state.clip_top) &&
            (rect->right == self->orders_state.clip_right) &&
            (rect->bottom == self->orders_state.clip_bottom))
    {
        return 1;
    }

    return 0;
}

/*****************************************************************************/
/* check if all coords are within 256 bytes */
/* returns boolean */
static int APP_CC
xrdp_orders_send_delta(struct xrdp_orders *self, int *vals, int count)
{
    int i;

    for (i = 0; i < count; i += 2)
    {
        if (g_abs(vals[i] - vals[i + 1]) >= 128)
        {
            return 0;
        }
    }

    return 1;
}

/*****************************************************************************/
/* returns error */
static int APP_CC
xrdp_orders_out_bounds(struct xrdp_orders *self, struct xrdp_rect *rect)
{
    char *bounds_flags_ptr;
    int bounds_flags;

    bounds_flags = 0;
    bounds_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    /* left */
    if (rect->left == self->orders_state.clip_left)
    {
    }
    else if (g_abs(rect->left - self->orders_state.clip_left) < 128)
    {
        bounds_flags |= 0x10;
    }
    else
    {
        bounds_flags |= 0x01;
    }

    /* top */
    if (rect->top == self->orders_state.clip_top)
    {
    }
    else if (g_abs(rect->top - self->orders_state.clip_top) < 128)
    {
        bounds_flags |= 0x20;
    }
    else
    {
        bounds_flags |= 0x02;
    }

    /* right */
    if (rect->right == self->orders_state.clip_right)
    {
    }
    else if (g_abs(rect->right - self->orders_state.clip_right) < 128)
    {
        bounds_flags |= 0x40;
    }
    else
    {
        bounds_flags |= 0x04;
    }

    /* bottom */
    if (rect->bottom == self->orders_state.clip_bottom)
    {
    }
    else if (g_abs(rect->bottom - self->orders_state.clip_bottom) < 128)
    {
        bounds_flags |= 0x80;
    }
    else
    {
        bounds_flags |= 0x08;
    }

    /* left */
    if (bounds_flags & 0x01)
    {
        out_uint16_le(self->out_s, rect->left);
    }
    else if (bounds_flags & 0x10)
    {
        out_uint8(self->out_s, rect->left - self->orders_state.clip_left);
    }

    self->orders_state.clip_left = rect->left;

    /* top */
    if (bounds_flags & 0x02)
    {
        out_uint16_le(self->out_s, rect->top);
    }
    else if (bounds_flags & 0x20)
    {
        out_uint8(self->out_s, rect->top - self->orders_state.clip_top);
    }

    self->orders_state.clip_top = rect->top;

    /* right */
    if (bounds_flags & 0x04)
    {
        /* silly rdp right clip */
        out_uint16_le(self->out_s, rect->right - 1);
    }
    else if (bounds_flags & 0x40)
    {
        out_uint8(self->out_s, rect->right - self->orders_state.clip_right);
    }

    self->orders_state.clip_right = rect->right;

    /* bottom */
    if (bounds_flags & 0x08)
    {
        /* silly rdp bottom clip */
        out_uint16_le(self->out_s, rect->bottom - 1);
    }
    else if (bounds_flags & 0x80)
    {
        out_uint8(self->out_s, rect->bottom - self->orders_state.clip_bottom);
    }

    self->orders_state.clip_bottom = rect->bottom;
    /* set flags */
    *bounds_flags_ptr = bounds_flags;
    return 0;
}

/*****************************************************************************/
/* returns error */
static int APP_CC
xrdp_order_pack_small_or_tiny(struct xrdp_orders *self,
                              char *order_flags_ptr, int orders_flags,
                              char *present_ptr, int present,
                              int present_size)
{
    int move_up_count = 0;
    int index = 0;
    int size = 0;
    int keep_looking = 1;

    move_up_count = 0;
    keep_looking = 1;

    for (index = present_size - 1; index >= 0; index--)
    {
        if (keep_looking)
        {
            if (((present >> (index * 8)) & 0xff) == 0)
            {
                move_up_count++;
            }
            else
            {
                keep_looking = 0;
            }
        }

        present_ptr[index] = present >> (index * 8);
    }

    if (move_up_count > 0)
    {
        /* move_up_count should be 0, 1, 2, or 3
           shifting it 6 will make it RDP_ORDER_TINY(0x80) or
           RDP_ORDER_SMALL(0x40) or both */
        orders_flags |= move_up_count << 6;
        size = (int)(self->out_s->p - present_ptr);
        size -= present_size;

        for (index = 0; index < size; index++)
        {
            present_ptr[index + (present_size - move_up_count)] =
                present_ptr[index + present_size];
        }

        self->out_s->p -= move_up_count;
    }

    order_flags_ptr[0] = orders_flags;
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a solid rect to client */
/* max size 23 */
int APP_CC
xrdp_orders_rect(struct xrdp_orders *self, int x, int y, int cx, int cy,
                 int color, struct xrdp_rect *rect)
{
    int order_flags;
    int vals[8];
    int present;
    char *present_ptr;
    char *order_flags_ptr;

    if (xrdp_orders_check(self, 23) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_RECT)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_RECT;

    if (rect != 0)
    {
        /* if clip is present, still check if it's needed */
        if (x < rect->left || y < rect->top ||
                x + cx > rect->right || y + cy > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = x;
    vals[1] = self->orders_state.rect_x;
    vals[2] = y;
    vals[3] = self->orders_state.rect_y;
    vals[4] = cx;
    vals[5] = self->orders_state.rect_cx;
    vals[6] = cy;
    vals[7] = self->orders_state.rect_cy;

    if (xrdp_orders_send_delta(self, vals, 8))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 1 byte */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (x != self->orders_state.rect_x)
    {
        present |= 0x01;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, x - self->orders_state.rect_x);
        }
        else
        {
            out_uint16_le(self->out_s, x);
        }

        self->orders_state.rect_x = x;
    }

    if (y != self->orders_state.rect_y)
    {
        present |= 0x02;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, y - self->orders_state.rect_y);
        }
        else
        {
            out_uint16_le(self->out_s, y);
        }

        self->orders_state.rect_y = y;
    }

    if (cx != self->orders_state.rect_cx)
    {
        present |= 0x04;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cx - self->orders_state.rect_cx);
        }
        else
        {
            out_uint16_le(self->out_s, cx);
        }

        self->orders_state.rect_cx = cx;
    }

    if (cy != self->orders_state.rect_cy)
    {
        present |= 0x08;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cy - self->orders_state.rect_cy);
        }
        else
        {
            out_uint16_le(self->out_s, cy);
        }

        self->orders_state.rect_cy = cy;
    }

    if ((color & 0xff) != (self->orders_state.rect_color & 0xff))
    {
        present |= 0x10;
        self->orders_state.rect_color =
            (self->orders_state.rect_color & 0xffff00) | (color & 0xff);
        out_uint8(self->out_s, color);
    }

    if ((color & 0xff00) != (self->orders_state.rect_color & 0xff00))
    {
        present |= 0x20;
        self->orders_state.rect_color =
            (self->orders_state.rect_color & 0xff00ff) | (color & 0xff00);
        out_uint8(self->out_s, color >> 8);
    }

    if ((color & 0xff0000) != (self->orders_state.rect_color & 0xff0000))
    {
        present |= 0x40;
        self->orders_state.rect_color =
            (self->orders_state.rect_color & 0x00ffff) | (color & 0xff0000);
        out_uint8(self->out_s, color >> 16);
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 1);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a screen blt order */
/* max size 25 */
int APP_CC
xrdp_orders_screen_blt(struct xrdp_orders *self, int x, int y,
                       int cx, int cy, int srcx, int srcy,
                       int rop, struct xrdp_rect *rect)
{
    int order_flags = 0;
    int vals[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
    int present = 0;
    char *present_ptr = (char *)NULL;
    char *order_flags_ptr = (char *)NULL;

    if (xrdp_orders_check(self, 25) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_SCREENBLT)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_SCREENBLT;

    if (rect != 0)
    {
        /* if clip is present, still check if it's needed */
        if (x < rect->left || y < rect->top ||
                x + cx > rect->right || y + cy > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = x;
    vals[1] = self->orders_state.scr_blt_x;
    vals[2] = y;
    vals[3] = self->orders_state.scr_blt_y;
    vals[4] = cx;
    vals[5] = self->orders_state.scr_blt_cx;
    vals[6] = cy;
    vals[7] = self->orders_state.scr_blt_cy;
    vals[8] = srcx;
    vals[9] = self->orders_state.scr_blt_srcx;
    vals[10] = srcy;
    vals[11] = self->orders_state.scr_blt_srcy;

    if (xrdp_orders_send_delta(self, vals, 12))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 1 byte */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (x != self->orders_state.scr_blt_x)
    {
        present |= 0x01;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, x - self->orders_state.scr_blt_x);
        }
        else
        {
            out_uint16_le(self->out_s, x);
        }

        self->orders_state.scr_blt_x = x;
    }

    if (y != self->orders_state.scr_blt_y)
    {
        present |= 0x02;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, y - self->orders_state.scr_blt_y);
        }
        else
        {
            out_uint16_le(self->out_s, y);
        }

        self->orders_state.scr_blt_y = y;
    }

    if (cx != self->orders_state.scr_blt_cx)
    {
        present |= 0x04;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cx - self->orders_state.scr_blt_cx);
        }
        else
        {
            out_uint16_le(self->out_s, cx);
        }

        self->orders_state.scr_blt_cx = cx;
    }

    if (cy != self->orders_state.scr_blt_cy)
    {
        present |= 0x08;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cy - self->orders_state.scr_blt_cy);
        }
        else
        {
            out_uint16_le(self->out_s, cy);
        }

        self->orders_state.scr_blt_cy = cy;
    }

    if (rop != self->orders_state.scr_blt_rop)
    {
        present |= 0x10;
        out_uint8(self->out_s, rop);
        self->orders_state.scr_blt_rop = rop;
    }

    if (srcx != self->orders_state.scr_blt_srcx)
    {
        present |= 0x20;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcx - self->orders_state.scr_blt_srcx);
        }
        else
        {
            out_uint16_le(self->out_s, srcx);
        }

        self->orders_state.scr_blt_srcx = srcx;
    }

    if (srcy != self->orders_state.scr_blt_srcy)
    {
        present |= 0x40;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcy - self->orders_state.scr_blt_srcy);
        }
        else
        {
            out_uint16_le(self->out_s, srcy);
        }

        self->orders_state.scr_blt_srcy = srcy;
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 1);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a pat blt order */
/* max size 39 */
int APP_CC
xrdp_orders_pat_blt(struct xrdp_orders *self, int x, int y,
                    int cx, int cy, int rop, int bg_color,
                    int fg_color, struct xrdp_brush *brush,
                    struct xrdp_rect *rect)
{
    int order_flags;
    int present;
    int vals[8];
    char *present_ptr;
    char *order_flags_ptr;
    struct xrdp_brush blank_brush;

    if (xrdp_orders_check(self, 39) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_PATBLT)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_PATBLT;

    if (rect != 0)
    {
        /* if clip is present, still check if it's needed */
        if (x < rect->left || y < rect->top ||
                x + cx > rect->right || y + cy > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = x;
    vals[1] = self->orders_state.pat_blt_x;
    vals[2] = y;
    vals[3] = self->orders_state.pat_blt_y;
    vals[4] = cx;
    vals[5] = self->orders_state.pat_blt_cx;
    vals[6] = cy;
    vals[7] = self->orders_state.pat_blt_cy;

    if (xrdp_orders_send_delta(self, vals, 8))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 2 bytes */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 2);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (x != self->orders_state.pat_blt_x)
    {
        present |= 0x0001;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, x - self->orders_state.pat_blt_x);
        }
        else
        {
            out_uint16_le(self->out_s, x);
        }

        self->orders_state.pat_blt_x = x;
    }

    if (y != self->orders_state.pat_blt_y)
    {
        present |= 0x0002;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, y - self->orders_state.pat_blt_y);
        }
        else
        {
            out_uint16_le(self->out_s, y);
        }

        self->orders_state.pat_blt_y = y;
    }

    if (cx != self->orders_state.pat_blt_cx)
    {
        present |= 0x0004;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cx - self->orders_state.pat_blt_cx);
        }
        else
        {
            out_uint16_le(self->out_s, cx);
        }

        self->orders_state.pat_blt_cx = cx;
    }

    if (cy != self->orders_state.pat_blt_cy)
    {
        present |= 0x0008;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cy - self->orders_state.pat_blt_cy);
        }
        else
        {
            out_uint16_le(self->out_s, cy);
        }

        self->orders_state.pat_blt_cy = cy;
    }

    if (rop != self->orders_state.pat_blt_rop)
    {
        present |= 0x0010;
        /* PATCOPY PATPAINT PATINVERT DSTINVERT BLACKNESS WHITENESS */
        out_uint8(self->out_s, rop);
        self->orders_state.pat_blt_rop = rop;
    }

    if (bg_color != self->orders_state.pat_blt_bg_color)
    {
        present |= 0x0020;
        out_uint8(self->out_s, bg_color);
        out_uint8(self->out_s, bg_color >> 8);
        out_uint8(self->out_s, bg_color >> 16);
        self->orders_state.pat_blt_bg_color = bg_color;
    }

    if (fg_color != self->orders_state.pat_blt_fg_color)
    {
        present |= 0x0040;
        out_uint8(self->out_s, fg_color);
        out_uint8(self->out_s, fg_color >> 8);
        out_uint8(self->out_s, fg_color >> 16);
        self->orders_state.pat_blt_fg_color = fg_color;
    }

    if (brush == 0) /* if nil use blank one */
    {
        /* todo can we just set style to zero */
        g_memset(&blank_brush, 0, sizeof(struct xrdp_brush));
        brush = &blank_brush;
    }

    if (brush->x_origin != self->orders_state.pat_blt_brush.x_origin)
    {
        present |= 0x0080;
        out_uint8(self->out_s, brush->x_origin);
        self->orders_state.pat_blt_brush.x_origin = brush->x_origin;
    }

    if (brush->y_origin != self->orders_state.pat_blt_brush.y_origin)
    {
        present |= 0x0100;
        out_uint8(self->out_s, brush->y_origin);
        self->orders_state.pat_blt_brush.y_origin = brush->y_origin;
    }

    if (brush->style != self->orders_state.pat_blt_brush.style)
    {
        present |= 0x0200;
        out_uint8(self->out_s, brush->style);
        self->orders_state.pat_blt_brush.style = brush->style;
    }

    if (brush->pattern[0] != self->orders_state.pat_blt_brush.pattern[0])
    {
        present |= 0x0400;
        out_uint8(self->out_s, brush->pattern[0]);
        self->orders_state.pat_blt_brush.pattern[0] = brush->pattern[0];
    }

    if (g_memcmp(brush->pattern + 1,
                 self->orders_state.pat_blt_brush.pattern + 1, 7) != 0)
    {
        present |= 0x0800;
        out_uint8a(self->out_s, brush->pattern + 1, 7);
        g_memcpy(self->orders_state.pat_blt_brush.pattern + 1,
                 brush->pattern + 1, 7);
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 2);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a dest blt order */
/* max size 21 */
int APP_CC
xrdp_orders_dest_blt(struct xrdp_orders *self, int x, int y,
                     int cx, int cy, int rop,
                     struct xrdp_rect *rect)
{
    int order_flags;
    int vals[8];
    int present;
    char *present_ptr;
    char *order_flags_ptr;

    if (xrdp_orders_check(self, 21) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_DESTBLT)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_DESTBLT;

    if (rect != 0)
    {
        /* if clip is present, still check if it's needed */
        if (x < rect->left || y < rect->top ||
                x + cx > rect->right || y + cy > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = x;
    vals[1] = self->orders_state.dest_blt_x;
    vals[2] = y;
    vals[3] = self->orders_state.dest_blt_y;
    vals[4] = cx;
    vals[5] = self->orders_state.dest_blt_cx;
    vals[6] = cy;
    vals[7] = self->orders_state.dest_blt_cy;

    if (xrdp_orders_send_delta(self, vals, 8))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 1 byte */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (x != self->orders_state.dest_blt_x)
    {
        present |= 0x01;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, x - self->orders_state.dest_blt_x);
        }
        else
        {
            out_uint16_le(self->out_s, x);
        }

        self->orders_state.dest_blt_x = x;
    }

    if (y != self->orders_state.dest_blt_y)
    {
        present |= 0x02;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, y - self->orders_state.dest_blt_y);
        }
        else
        {
            out_uint16_le(self->out_s, y);
        }

        self->orders_state.dest_blt_y = y;
    }

    if (cx != self->orders_state.dest_blt_cx)
    {
        present |= 0x04;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cx - self->orders_state.dest_blt_cx);
        }
        else
        {
            out_uint16_le(self->out_s, cx);
        }

        self->orders_state.dest_blt_cx = cx;
    }

    if (cy != self->orders_state.dest_blt_cy)
    {
        present |= 0x08;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cy - self->orders_state.dest_blt_cy);
        }
        else
        {
            out_uint16_le(self->out_s, cy);
        }

        self->orders_state.dest_blt_cy = cy;
    }

    if (rop != self->orders_state.dest_blt_rop)
    {
        present |= 0x10;
        out_uint8(self->out_s, rop);
        self->orders_state.dest_blt_rop = rop;
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 1);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a line order */
/* max size 32 */
int APP_CC
xrdp_orders_line(struct xrdp_orders *self, int mix_mode,
                 int startx, int starty,
                 int endx, int endy, int rop, int bg_color,
                 struct xrdp_pen *pen,
                 struct xrdp_rect *rect)
{
    int order_flags = 0;
    int vals[8] = {0, 0, 0, 0, 0, 0, 0, 0};
    int present = 0;
    char *present_ptr = (char *)NULL;
    char *order_flags_ptr = (char *)NULL;
    struct xrdp_pen blank_pen;

    g_memset(&blank_pen, 0, sizeof(struct xrdp_pen));

    /* if mix mode or rop are out of range, mstsc build 6000+ will parse the
       orders wrong */
    if ((mix_mode < 1) || (mix_mode > 2)) /* TRANSPARENT(1) or OPAQUE(2) */
    {
        mix_mode = 1;
    }

    if ((rop < 1) || (rop > 0x10))
    {
        rop = 0x0d; /* R2_COPYPEN */
    }

    if (xrdp_orders_check(self, 32) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_LINE)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_LINE;

    if (rect != 0)
    {
        /* if clip is present, still check if it's needed */
        if (MIN(endx, startx) < rect->left ||
                MIN(endy, starty) < rect->top ||
                MAX(endx, startx) >= rect->right ||
                MAX(endy, starty) >= rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = startx;
    vals[1] = self->orders_state.line_startx;
    vals[2] = starty;
    vals[3] = self->orders_state.line_starty;
    vals[4] = endx;
    vals[5] = self->orders_state.line_endx;
    vals[6] = endy;
    vals[7] = self->orders_state.line_endy;

    if (xrdp_orders_send_delta(self, vals, 8))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 2 bytes */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 2);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (mix_mode != self->orders_state.line_mix_mode)
    {
        present |= 0x0001;
        out_uint16_le(self->out_s, mix_mode);
        self->orders_state.line_mix_mode = mix_mode;
    }

    if (startx != self->orders_state.line_startx)
    {
        present |= 0x0002;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, startx - self->orders_state.line_startx);
        }
        else
        {
            out_uint16_le(self->out_s, startx);
        }

        self->orders_state.line_startx = startx;
    }

    if (starty != self->orders_state.line_starty)
    {
        present |= 0x0004;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, starty - self->orders_state.line_starty);
        }
        else
        {
            out_uint16_le(self->out_s, starty);
        }

        self->orders_state.line_starty = starty;
    }

    if (endx != self->orders_state.line_endx)
    {
        present |= 0x0008;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, endx - self->orders_state.line_endx);
        }
        else
        {
            out_uint16_le(self->out_s, endx);
        }

        self->orders_state.line_endx = endx;
    }

    if (endy != self->orders_state.line_endy)
    {
        present |= 0x0010;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, endy - self->orders_state.line_endy);
        }
        else
        {
            out_uint16_le(self->out_s, endy);
        }

        self->orders_state.line_endy = endy;
    }

    if (bg_color != self->orders_state.line_bg_color)
    {
        present |= 0x0020;
        out_uint8(self->out_s, bg_color);
        out_uint8(self->out_s, bg_color >> 8);
        out_uint8(self->out_s, bg_color >> 16);
        self->orders_state.line_bg_color = bg_color;
    }

    if (rop != self->orders_state.line_rop)
    {
        present |= 0x0040;
        out_uint8(self->out_s, rop);
        self->orders_state.line_rop = rop;
    }

    if (pen == 0)
    {
        g_memset(&blank_pen, 0, sizeof(struct xrdp_pen));
        pen = &blank_pen;
    }

    if (pen->style != self->orders_state.line_pen.style)
    {
        present |= 0x0080;
        out_uint8(self->out_s, pen->style);
        self->orders_state.line_pen.style = pen->style;
    }

    if (pen->width != self->orders_state.line_pen.width)
    {
        present |= 0x0100;
        out_uint8(self->out_s, pen->width);
        self->orders_state.line_pen.width = pen->width;
    }

    if (pen->color != self->orders_state.line_pen.color)
    {
        present |= 0x0200;
        out_uint8(self->out_s, pen->color);
        out_uint8(self->out_s, pen->color >> 8);
        out_uint8(self->out_s, pen->color >> 16);
        self->orders_state.line_pen.color = pen->color;
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 2);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a mem blt order */
/* max size  30 */
int APP_CC
xrdp_orders_mem_blt(struct xrdp_orders *self, int cache_id,
                    int color_table, int x, int y, int cx, int cy,
                    int rop, int srcx, int srcy,
                    int cache_idx, struct xrdp_rect *rect)
{
    int order_flags = 0;
    int vals[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
    int present = 0;
    char *present_ptr = (char *)NULL;
    char *order_flags_ptr = (char *)NULL;

    if (xrdp_orders_check(self, 30) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_MEMBLT)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_MEMBLT;

    if (rect != 0)
    {
        /* if clip is present, still check if it's needed */
        if (x < rect->left || y < rect->top ||
                x + cx > rect->right || y + cy > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    vals[0] = x;
    vals[1] = self->orders_state.mem_blt_x;
    vals[2] = y;
    vals[3] = self->orders_state.mem_blt_y;
    vals[4] = cx;
    vals[5] = self->orders_state.mem_blt_cx;
    vals[6] = cy;
    vals[7] = self->orders_state.mem_blt_cy;
    vals[8] = srcx;
    vals[9] = self->orders_state.mem_blt_srcx;
    vals[10] = srcy;
    vals[11] = self->orders_state.mem_blt_srcy;

    if (xrdp_orders_send_delta(self, vals, 12))
    {
        order_flags |= RDP_ORDER_DELTA;
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 2 bytes */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 2);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (cache_id != self->orders_state.mem_blt_cache_id ||
            color_table != self->orders_state.mem_blt_color_table)
    {
        present |= 0x0001;
        out_uint8(self->out_s, cache_id);
        out_uint8(self->out_s, color_table);
        self->orders_state.mem_blt_cache_id = cache_id;
        self->orders_state.mem_blt_color_table = color_table;
    }

    if (x != self->orders_state.mem_blt_x)
    {
        present |= 0x0002;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, x - self->orders_state.mem_blt_x);
        }
        else
        {
            out_uint16_le(self->out_s, x);
        }

        self->orders_state.mem_blt_x = x;
    }

    if (y != self->orders_state.mem_blt_y)
    {
        present |= 0x0004;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, y - self->orders_state.mem_blt_y);
        }
        else
        {
            out_uint16_le(self->out_s, y);
        }

        self->orders_state.mem_blt_y = y;
    }

    if (cx != self->orders_state.mem_blt_cx)
    {
        present |= 0x0008;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cx - self->orders_state.mem_blt_cx);
        }
        else
        {
            out_uint16_le(self->out_s, cx);
        }

        self->orders_state.mem_blt_cx = cx;
    }

    if (cy != self->orders_state.mem_blt_cy)
    {
        present |= 0x0010;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, cy - self->orders_state.mem_blt_cy);
        }
        else
        {
            out_uint16_le(self->out_s, cy);
        }

        self->orders_state.mem_blt_cy = cy;
    }

    if (rop != self->orders_state.mem_blt_rop)
    {
        present |= 0x0020;
        out_uint8(self->out_s, rop);
        self->orders_state.mem_blt_rop = rop;
    }

    if (srcx != self->orders_state.mem_blt_srcx)
    {
        present |= 0x0040;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcx - self->orders_state.mem_blt_srcx);
        }
        else
        {
            out_uint16_le(self->out_s, srcx);
        }

        self->orders_state.mem_blt_srcx = srcx;
    }

    if (srcy != self->orders_state.mem_blt_srcy)
    {
        present |= 0x0080;

        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcy - self->orders_state.mem_blt_srcy);
        }
        else
        {
            out_uint16_le(self->out_s, srcy);
        }

        self->orders_state.mem_blt_srcy = srcy;
    }

    if (cache_idx != self->orders_state.mem_blt_cache_idx)
    {
        present |= 0x0100;
        out_uint16_le(self->out_s, cache_idx);
        self->orders_state.mem_blt_cache_idx = cache_idx;
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 2);
    return 0;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_composite_blt(struct xrdp_orders* self, int srcidx, int srcformat,
                          int srcwidth, int srcrepeat, int* srctransform,
                          int mskflags, int mskidx, int mskformat,
                          int mskwidth, int mskrepeat, int op,
                          int srcx, int srcy, int mskx, int msky,
                          int dstx, int dsty, int width, int height,
                          int dstformat,
                          struct xrdp_rect* rect)
{
    int order_flags;
    int vals[20];
    int present;
    char* present_ptr;
    char* order_flags_ptr;

    if (xrdp_orders_check(self, 80) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;
    if (self->orders_state.last_order != RDP_ORDER_COMPOSITE)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }
    self->orders_state.last_order = RDP_ORDER_COMPOSITE;
    if (rect != 0)
    {
        /* if clip is present, still check if it's needed */
        if (dstx < rect->left || dsty < rect->top ||
            dstx + width > rect->right || dsty + height > rect->bottom)
        {
            order_flags |= RDP_ORDER_BOUNDS;
            if (xrdp_orders_last_bounds(self, rect))
            {

                order_flags |= RDP_ORDER_LASTBOUNDS;

            }
        }
    }
    vals[0] = srcx;
    vals[1] = self->orders_state.com_blt_srcx;
    vals[2] = srcy;
    vals[3] = self->orders_state.com_blt_srcy;
    vals[4] = mskx;
    vals[5] = self->orders_state.com_blt_mskx;
    vals[6] = msky;
    vals[7] = self->orders_state.com_blt_msky;
    vals[8] = dstx;
    vals[9] = self->orders_state.com_blt_dstx;
    vals[10] = dsty;
    vals[11] = self->orders_state.com_blt_dsty;
    vals[12] = width;
    vals[13] = self->orders_state.com_blt_width;
    vals[14] = height;
    vals[15] = self->orders_state.com_blt_height;
    vals[16] = srcwidth;
    vals[17] = self->orders_state.com_blt_srcwidth;
    vals[18] = mskwidth;
    vals[19] = self->orders_state.com_blt_mskwidth;
    if (xrdp_orders_send_delta(self, vals, 20))
    {
        order_flags |= RDP_ORDER_DELTA;
    }
    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);
    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }
    present = 0;
    /* present, set later, 3 bytes */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 3);
    if ((order_flags & RDP_ORDER_BOUNDS) &&
        !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (srcidx != self->orders_state.com_blt_srcidx)
    {
        present |= 0x000001;
        out_uint16_le(self->out_s, srcidx);
        self->orders_state.com_blt_srcidx = srcidx;
    }

    if (srcformat != self->orders_state.com_blt_srcformat)
    {
        present |= 0x000002;
        out_uint32_le(self->out_s, srcformat);
        self->orders_state.com_blt_srcformat = srcformat;
    }

    if (srcwidth != self->orders_state.com_blt_srcwidth)
    {
        present |= 0x000004;
        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcwidth - self->orders_state.com_blt_srcwidth);
        }
        else
        {
            out_uint16_le(self->out_s, srcwidth);
        }
        self->orders_state.com_blt_srcwidth = srcwidth;
    }

    if (srcrepeat != self->orders_state.com_blt_srcrepeat)
    {
        present |= 0x000008;
        out_uint8(self->out_s, srcrepeat);
        self->orders_state.com_blt_srcrepeat = srcrepeat;
    }

    if (srctransform != 0)
    {
        if (srctransform[0] != self->orders_state.com_blt_srctransform[0])
        {
            present |= 0x000010;
            out_uint32_le(self->out_s, srctransform[0]);
            self->orders_state.com_blt_srctransform[0] = srctransform[0];
        }
        if (g_memcmp(&(srctransform[1]),
                     &(self->orders_state.com_blt_srctransform[1]),
                     36) != 0)
        {
            present |= 0x000020;
            out_uint32_le(self->out_s, srctransform[1]);
            out_uint32_le(self->out_s, srctransform[2]);
            out_uint32_le(self->out_s, srctransform[3]);
            out_uint32_le(self->out_s, srctransform[4]);
            out_uint32_le(self->out_s, srctransform[5]);
            out_uint32_le(self->out_s, srctransform[6]);
            out_uint32_le(self->out_s, srctransform[7]);
            out_uint32_le(self->out_s, srctransform[8]);
            out_uint32_le(self->out_s, srctransform[9]);
        }
    }
    else
    {
        if (self->orders_state.com_blt_srctransform[0] != 0)
        {
            present |= 0x000010;
            out_uint32_le(self->out_s, 0);
            self->orders_state.com_blt_srctransform[0] = 0;
        }
    }

    if (mskflags != self->orders_state.com_blt_mskflags)
    {
        present |= 0x000040;
        out_uint8(self->out_s, mskflags);
        self->orders_state.com_blt_mskflags = mskflags;
    }

    if (mskidx != self->orders_state.com_blt_mskidx)
    {
        present |= 0x000080;
        out_uint16_le(self->out_s, mskidx);
        self->orders_state.com_blt_mskidx = mskidx;
    }

    if (mskformat != self->orders_state.com_blt_mskformat)
    {
        present |= 0x000100;
        out_uint32_le(self->out_s, mskformat);
        self->orders_state.com_blt_mskformat = mskformat;
    }

    if (mskwidth != self->orders_state.com_blt_mskwidth)
    {
        present |= 0x000200;
        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, mskwidth - self->orders_state.com_blt_mskwidth);
        }
        else
        {
            out_uint16_le(self->out_s, mskwidth);
        }
        self->orders_state.com_blt_mskwidth = mskwidth;
    }

    if (mskrepeat != self->orders_state.com_blt_mskrepeat)
    {
        present |= 0x000400;
        out_uint8(self->out_s, mskrepeat);
        self->orders_state.com_blt_mskrepeat = mskrepeat;
    }

    if (op != self->orders_state.com_blt_op)
    {
        present |= 0x000800;
        out_uint8(self->out_s, op);
        self->orders_state.com_blt_op = op;
    }

    if (srcx != self->orders_state.com_blt_srcx)
    {
        present |= 0x001000;
        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcx - self->orders_state.com_blt_srcx);
        }
        else
        {
            out_uint16_le(self->out_s, srcx);
        }
        self->orders_state.com_blt_srcx = srcx;
    }

    if (srcy != self->orders_state.com_blt_srcy)
    {
        present |= 0x002000;
        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, srcy - self->orders_state.com_blt_srcy);
        }
        else
        {
            out_uint16_le(self->out_s, srcy);
        }
        self->orders_state.com_blt_srcy = srcy;
    }

    if (mskx != self->orders_state.com_blt_mskx)
    {
        present |= 0x004000;
        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, mskx - self->orders_state.com_blt_mskx);
        }
        else
        {
            out_uint16_le(self->out_s, mskx);
        }
        self->orders_state.com_blt_mskx = mskx;
    }

    if (msky != self->orders_state.com_blt_msky)
    {
        present |= 0x008000;
        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, msky - self->orders_state.com_blt_msky);
        }
        else
        {
            out_uint16_le(self->out_s, msky);
        }
        self->orders_state.com_blt_msky = msky;
    }

    if (dstx != self->orders_state.com_blt_dstx)
    {
        present |= 0x010000;
        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, dstx - self->orders_state.com_blt_dstx);
        }
        else
        {
            out_uint16_le(self->out_s, dstx);
        }
        self->orders_state.com_blt_dstx = dstx;
    }

    if (dsty != self->orders_state.com_blt_dsty)
    {
        present |= 0x020000;
        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, dsty - self->orders_state.com_blt_dsty);
        }
        else
        {
            out_uint16_le(self->out_s, dsty);
        }
        self->orders_state.com_blt_dsty = dsty;
    }

    if (width != self->orders_state.com_blt_width)
    {
        present |= 0x040000;
        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, width - self->orders_state.com_blt_width);
        }
        else
        {
            out_uint16_le(self->out_s, width);
        }
        self->orders_state.com_blt_width = width;
    }

    if (height != self->orders_state.com_blt_height)
    {
        present |= 0x080000;
        if (order_flags & RDP_ORDER_DELTA)
        {
            out_uint8(self->out_s, height - self->orders_state.com_blt_height);
        }
        else
        {
            out_uint16_le(self->out_s, height);
        }
        self->orders_state.com_blt_height = height;
    }

    if (dstformat != self->orders_state.com_blt_dstformat)
    {
        present |= 0x100000;
        out_uint32_le(self->out_s, dstformat);
        self->orders_state.com_blt_dstformat = dstformat;
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,

                                  present_ptr, present, 3);

    return 0;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_text(struct xrdp_orders *self,
                 int font, int flags, int mixmode,
                 int fg_color, int bg_color,
                 int clip_left, int clip_top,
                 int clip_right, int clip_bottom,
                 int box_left, int box_top,
                 int box_right, int box_bottom,
                 int x, int y, char *data, int data_len,
                 struct xrdp_rect *rect)
{
    int order_flags = 0;
    int present = 0;
    char *present_ptr = (char *)NULL;
    char *order_flags_ptr = (char *)NULL;

    if (xrdp_orders_check(self, 44 + data_len) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD;

    if (self->orders_state.last_order != RDP_ORDER_TEXT2)
    {
        order_flags |= RDP_ORDER_CHANGE;
    }

    self->orders_state.last_order = RDP_ORDER_TEXT2;

    if (rect != 0)
    {
        /* if clip is present, still check if it's needed */
        if ((box_right - box_left > 1 &&
                (box_left < rect->left ||
                 box_top < rect->top ||
                 box_right > rect->right ||
                 box_bottom > rect->bottom)) ||
                (clip_left < rect->left ||
                 clip_top < rect->top ||
                 clip_right > rect->right ||
                 clip_bottom > rect->bottom))
        {
            order_flags |= RDP_ORDER_BOUNDS;

            if (xrdp_orders_last_bounds(self, rect))
            {
                order_flags |= RDP_ORDER_LASTBOUNDS;
            }
        }
    }

    /* order_flags, set later, 1 byte */
    order_flags_ptr = self->out_s->p;
    out_uint8s(self->out_s, 1);

    if (order_flags & RDP_ORDER_CHANGE)
    {
        out_uint8(self->out_s, self->orders_state.last_order);
    }

    present = 0;
    /* present, set later, 3 bytes */
    present_ptr = self->out_s->p;
    out_uint8s(self->out_s, 3);

    if ((order_flags & RDP_ORDER_BOUNDS) &&
            !(order_flags & RDP_ORDER_LASTBOUNDS))
    {
        xrdp_orders_out_bounds(self, rect);
    }

    if (font != self->orders_state.text_font)
    {
        present |= 0x000001;
        out_uint8(self->out_s, font);
        self->orders_state.text_font = font;
    }

    if (flags != self->orders_state.text_flags)
    {
        present |= 0x000002;
        out_uint8(self->out_s, flags);
        self->orders_state.text_flags = flags;
    }

    /* unknown */
    if (mixmode != self->orders_state.text_mixmode)
    {
        present |= 0x000008;
        out_uint8(self->out_s, mixmode);
        self->orders_state.text_mixmode = mixmode;
    }

    if (fg_color != self->orders_state.text_fg_color)
    {
        present |= 0x000010;
        out_uint8(self->out_s, fg_color);
        out_uint8(self->out_s, fg_color >> 8);
        out_uint8(self->out_s, fg_color >> 16);
        self->orders_state.text_fg_color = fg_color;
    }

    if (bg_color != self->orders_state.text_bg_color)
    {
        present |= 0x000020;
        out_uint8(self->out_s, bg_color);
        out_uint8(self->out_s, bg_color >> 8);
        out_uint8(self->out_s, bg_color >> 16);
        self->orders_state.text_bg_color = bg_color;
    }

    if (clip_left != self->orders_state.text_clip_left)
    {
        present |= 0x000040;
        out_uint16_le(self->out_s, clip_left);
        self->orders_state.text_clip_left = clip_left;
    }

    if (clip_top != self->orders_state.text_clip_top)
    {
        present |= 0x000080;
        out_uint16_le(self->out_s, clip_top);
        self->orders_state.text_clip_top = clip_top;
    }

    if (clip_right != self->orders_state.text_clip_right)
    {
        present |= 0x000100;
        out_uint16_le(self->out_s, clip_right);
        self->orders_state.text_clip_right = clip_right;
    }

    if (clip_bottom != self->orders_state.text_clip_bottom)
    {
        present |= 0x000200;
        out_uint16_le(self->out_s, clip_bottom);
        self->orders_state.text_clip_bottom = clip_bottom;
    }

    if (box_left != self->orders_state.text_box_left)
    {
        present |= 0x000400;
        out_uint16_le(self->out_s, box_left);
        self->orders_state.text_box_left = box_left;
    }

    if (box_top != self->orders_state.text_box_top)
    {
        present |= 0x000800;
        out_uint16_le(self->out_s, box_top);
        self->orders_state.text_box_top = box_top;
    }

    if (box_right != self->orders_state.text_box_right)
    {
        present |= 0x001000;
        out_uint16_le(self->out_s, box_right);
        self->orders_state.text_box_right = box_right;
    }

    if (box_bottom != self->orders_state.text_box_bottom)
    {
        present |= 0x002000;
        out_uint16_le(self->out_s, box_bottom);
        self->orders_state.text_box_bottom = box_bottom;
    }

    if (x != self->orders_state.text_x)
    {
        present |= 0x080000;
        out_uint16_le(self->out_s, x);
        self->orders_state.text_x = x;
    }

    if (y != self->orders_state.text_y)
    {
        present |= 0x100000;
        out_uint16_le(self->out_s, y);
        self->orders_state.text_y = y;
    }

    {
        /* always send text */
        present |= 0x200000;
        out_uint8(self->out_s, data_len);
        out_uint8a(self->out_s, data, data_len);
    }

    xrdp_order_pack_small_or_tiny(self, order_flags_ptr, order_flags,
                                  present_ptr, present, 3);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* when a palette gets sent, send the main palette too */
int APP_CC
xrdp_orders_send_palette(struct xrdp_orders *self, int *palette,
                         int cache_id)
{
    int order_flags;
    int len;
    int i;

    if (xrdp_orders_check(self, 2000) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = 1027 - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    out_uint16_le(self->out_s, 0); /* flags */
    out_uint8(self->out_s, RDP_ORDER_COLCACHE); /* type */
    out_uint8(self->out_s, cache_id);
    out_uint16_le(self->out_s, 256); /* num colors */

    for (i = 0; i < 256; i++)
    {
        out_uint8(self->out_s, palette[i]);
        out_uint8(self->out_s, palette[i] >> 8);
        out_uint8(self->out_s, palette[i] >> 16);
        out_uint8(self->out_s, 0);
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
/* max size width * height * Bpp + 16 */
int APP_CC
xrdp_orders_send_raw_bitmap(struct xrdp_orders *self,
                            int width, int height, int bpp, char *data,
                            int cache_id, int cache_idx)
{
    int order_flags = 0;
    int len = 0;
    int bufsize = 0;
    int Bpp = 0;
    int i = 0;
    int j = 0;
    int pixel = 0;
    int e = 0;

    if (width > 64)
    {
        g_writeln("error, width > 64");
        return 1;
    }

    if (height > 64)
    {
        g_writeln("error, height > 64");
        return 1;
    }

    e = width % 4;

    if (e != 0)
    {
        e = 4 - e;
    }

    Bpp = (bpp + 7) / 8;
    bufsize = (width + e) * height * Bpp;
    while (bufsize + 16 > MAX_ORDERS_SIZE)
    {
        height--;
        bufsize = (width + e) * height * Bpp;
    }
    if (xrdp_orders_check(self, bufsize + 16) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (bufsize + 9) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    out_uint16_le(self->out_s, 8); /* flags */
    out_uint8(self->out_s, RDP_ORDER_RAW_BMPCACHE); /* type */
    out_uint8(self->out_s, cache_id);
    out_uint8s(self->out_s, 1); /* pad */
    out_uint8(self->out_s, width + e);
    out_uint8(self->out_s, height);
    out_uint8(self->out_s, bpp);
    out_uint16_le(self->out_s, bufsize);
    out_uint16_le(self->out_s, cache_idx);

    if (Bpp == 4)
    {
        for (i = height - 1; i >= 0; i--)
        {
            for (j = 0; j < width; j++)
            {
                pixel = GETPIXEL32(data, j, i, width);
                out_uint8(self->out_s, pixel);
                out_uint8(self->out_s, pixel >> 8);
                out_uint8(self->out_s, pixel >> 16);
                out_uint8(self->out_s, pixel >> 24);
            }
            out_uint8s(self->out_s, Bpp * e);
        }
    }
    else if (Bpp == 3)
    {
        for (i = height - 1; i >= 0; i--)
        {
            for (j = 0; j < width; j++)
            {
                pixel = GETPIXEL32(data, j, i, width);
                out_uint8(self->out_s, pixel);
                out_uint8(self->out_s, pixel >> 8);
                out_uint8(self->out_s, pixel >> 16);
            }
            out_uint8s(self->out_s, Bpp * e);
        }
    }
    else if (Bpp == 2)
    {
        for (i = height - 1; i >= 0; i--)
        {
            for (j = 0; j < width; j++)
            {
                pixel = GETPIXEL16(data, j, i, width);
                out_uint8(self->out_s, pixel);
                out_uint8(self->out_s, pixel >> 8);
            }
            out_uint8s(self->out_s, Bpp * e);
        }
    }
    else if (Bpp == 1)
    {
        for (i = height - 1; i >= 0; i--)
        {
            for (j = 0; j < width; j++)
            {
                pixel = GETPIXEL8(data, j, i, width);
                out_uint8(self->out_s, pixel);
            }
            out_uint8s(self->out_s, Bpp * e);
        }
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
/* max size width * height * Bpp + 16 */
int APP_CC
xrdp_orders_send_bitmap(struct xrdp_orders *self,
                        int width, int height, int bpp, char *data,
                        int cache_id, int cache_idx)
{
    int order_flags = 0;
    int len = 0;
    int bufsize = 0;
    int Bpp = 0;
    int i = 0;
    int lines_sending = 0;
    int e = 0;
    struct stream *s = NULL;
    struct stream *temp_s = NULL;
    char *p = NULL;

    if (width > 64)
    {
        g_writeln("error, width > 64");
        return 1;
    }

    if (height > 64)
    {
        g_writeln("error, height > 64");
        return 1;
    }

    e = width % 4;

    if (e != 0)
    {
        e = 4 - e;
    }

    s = self->s;
    init_stream(s, 16384 * 2);
    temp_s = self->temp_s;
    init_stream(temp_s, 16384 * 2);
    p = s->p;
    i = height;
    if (bpp > 24)
    {
        lines_sending = xrdp_bitmap32_compress(data, width, height, s,
                                               bpp, MAX_ORDERS_SIZE,
                                               i - 1, temp_s, e, 0x10);
    }
    else
    {
        lines_sending = xrdp_bitmap_compress(data, width, height, s,
                                             bpp, MAX_ORDERS_SIZE,
                                             i - 1, temp_s, e);
    }

    if (lines_sending != height)
    {
        height = lines_sending;
    }

    bufsize = (int)(s->p - p);
    Bpp = (bpp + 7) / 8;
    if (xrdp_orders_check(self, bufsize + 16) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);

    if (self->rdp_layer->client_info.op2)
    {
        len = (bufsize + 9) - 7; /* length after type minus 7 */
        out_uint16_le(self->out_s, len);
        out_uint16_le(self->out_s, 1024); /* flags */
    }
    else
    {
        len = (bufsize + 9 + 8) - 7; /* length after type minus 7 */
        out_uint16_le(self->out_s, len);
        out_uint16_le(self->out_s, 8); /* flags */
    }

    out_uint8(self->out_s, RDP_ORDER_BMPCACHE); /* type */
    out_uint8(self->out_s, cache_id);
    out_uint8s(self->out_s, 1); /* pad */
    out_uint8(self->out_s, width + e);
    out_uint8(self->out_s, height);
    out_uint8(self->out_s, bpp);
    out_uint16_le(self->out_s, bufsize/* + 8*/);
    out_uint16_le(self->out_s, cache_idx);

    if (!self->rdp_layer->client_info.op2)
    {
        out_uint8s(self->out_s, 2); /* pad */
        out_uint16_le(self->out_s, bufsize);
        out_uint16_le(self->out_s, (width + e) * Bpp); /* line size */
        out_uint16_le(self->out_s, (width + e) *
                      Bpp * height); /* final size */
    }

    out_uint8a(self->out_s, s->data, bufsize);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* max size datasize + 18*/
/* todo, only sends one for now */
int APP_CC
xrdp_orders_send_font(struct xrdp_orders *self,
                      struct xrdp_font_char *font_char,
                      int font_index, int char_index)
{
    int order_flags = 0;
    int datasize = 0;
    int len = 0;
    int flags;

    if (font_char->bpp == 8) /* alpha font */
    {
        datasize = ((font_char->width + 3) & ~3) * font_char->height;
        flags = 8 | 0x4000;
    }
    else
    {
        datasize = FONT_DATASIZE(font_char);
        flags = 8;
    }
    if (xrdp_orders_check(self, datasize + 18) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (datasize + 12) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    out_uint16_le(self->out_s, flags);
    out_uint8(self->out_s, RDP_ORDER_FONTCACHE); /* type */
    out_uint8(self->out_s, font_index);
    out_uint8(self->out_s, 1); /* num of chars */
    out_uint16_le(self->out_s, char_index);
    out_uint16_le(self->out_s, font_char->offset);
    out_uint16_le(self->out_s, font_char->baseline);
    out_uint16_le(self->out_s, font_char->width);
    out_uint16_le(self->out_s, font_char->height);
    out_uint8a(self->out_s, font_char->data, datasize);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* max size width * height * Bpp + 14 */
int APP_CC
xrdp_orders_send_raw_bitmap2(struct xrdp_orders *self,
                             int width, int height, int bpp, char *data,
                             int cache_id, int cache_idx)
{
    int order_flags = 0;
    int len = 0;
    int bufsize = 0;
    int Bpp = 0;
    int i = 0;
    int j = 0;
    int pixel = 0;
    int e = 0;

    g_writeln("xrdp_orders_send_raw_bitmap2:");
    if (width > 64)
    {
        g_writeln("error, width > 64");
        return 1;
    }

    if (height > 64)
    {
        g_writeln("error, height > 64");
        return 1;
    }

    e = width % 4;

    if (e != 0)
    {
        e = 4 - e;
    }

    Bpp = (bpp + 7) / 8;
    bufsize = (width + e) * height * Bpp;
    while (bufsize + 14 > MAX_ORDERS_SIZE)
    {
        height--;
        bufsize = (width + e) * height * Bpp;
    }
    if (xrdp_orders_check(self, bufsize + 14) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (bufsize + 6) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    i = (((Bpp + 2) << 3) & 0x38) | (cache_id & 7);
    out_uint16_le(self->out_s, i); /* flags */
    out_uint8(self->out_s, RDP_ORDER_RAW_BMPCACHE2); /* type */
    out_uint8(self->out_s, width + e);
    out_uint8(self->out_s, height);
    out_uint16_be(self->out_s, bufsize | 0x4000);
    i = ((cache_idx >> 8) & 0xff) | 0x80;
    out_uint8(self->out_s, i);
    i = cache_idx & 0xff;
    out_uint8(self->out_s, i);

    if (Bpp == 4)
    {
        for (i = height - 1; i >= 0; i--)
        {
            for (j = 0; j < width; j++)
            {
                pixel = GETPIXEL32(data, j, i, width);
                out_uint8(self->out_s, pixel);
                out_uint8(self->out_s, pixel >> 8);
                out_uint8(self->out_s, pixel >> 16);
                out_uint8(self->out_s, pixel >> 24);
            }
            out_uint8s(self->out_s, Bpp * e);
        }
    }
    else if (Bpp == 3)
    {
        for (i = height - 1; i >= 0; i--)
        {
            for (j = 0; j < width; j++)
            {
                pixel = GETPIXEL32(data, j, i, width);
                out_uint8(self->out_s, pixel);
                out_uint8(self->out_s, pixel >> 8);
                out_uint8(self->out_s, pixel >> 16);
            }
            out_uint8s(self->out_s, Bpp * e);
        }
    }
    else if (Bpp == 2)
    {
        for (i = height - 1; i >= 0; i--)
        {
            for (j = 0; j < width; j++)
            {
                pixel = GETPIXEL16(data, j, i, width);
                out_uint8(self->out_s, pixel);
                out_uint8(self->out_s, pixel >> 8);
            }
            out_uint8s(self->out_s, Bpp * e);
        }
    }
    else if (Bpp == 1)
    {
        for (i = height - 1; i >= 0; i--)
        {
            for (j = 0; j < width; j++)
            {
                pixel = GETPIXEL8(data, j, i, width);
                out_uint8(self->out_s, pixel);
            }
            out_uint8s(self->out_s, Bpp * e);
        }
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
/* max size width * height * Bpp + 14 */
int APP_CC
xrdp_orders_send_bitmap2(struct xrdp_orders *self,
                         int width, int height, int bpp, char *data,
                         int cache_id, int cache_idx, int hints)
{
    int order_flags = 0;
    int len = 0;
    int bufsize = 0;
    int Bpp = 0;
    int i = 0;
    int lines_sending = 0;
    int e = 0;
    struct stream *s = NULL;
    struct stream *temp_s = NULL;
    char *p = NULL;

    if (width > 64)
    {
        g_writeln("error, width > 64");
        return 1;
    }

    if (height > 64)
    {
        g_writeln("error, height > 64");
        return 1;
    }

    e = width % 4;

    if (e != 0)
    {
        e = 4 - e;
    }

    s = self->s;
    init_stream(s, 16384 * 2);
    temp_s = self->temp_s;
    init_stream(temp_s, 16384 * 2);
    p = s->p;
    i = height;
    if (bpp > 24)
    {
        lines_sending = xrdp_bitmap32_compress(data, width, height, s,
                                               bpp, MAX_ORDERS_SIZE,
                                               i - 1, temp_s, e, 0x10);
    }
    else
    {
        lines_sending = xrdp_bitmap_compress(data, width, height, s,
                                             bpp, MAX_ORDERS_SIZE,
                                             i - 1, temp_s, e);
    }

    if (lines_sending != height)
    {
        height = lines_sending;
    }

    bufsize = (int)(s->p - p);
    Bpp = (bpp + 7) / 8;
    if (xrdp_orders_check(self, bufsize + 14) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (bufsize + 6) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    i = (((Bpp + 2) << 3) & 0x38) | (cache_id & 7);
    i = i | (0x08 << 7); /* CBR2_NO_BITMAP_COMPRESSION_HDR */
    out_uint16_le(self->out_s, i); /* flags */
    out_uint8(self->out_s, RDP_ORDER_BMPCACHE2); /* type */
    out_uint8(self->out_s, width + e);
    out_uint8(self->out_s, height);
    out_uint16_be(self->out_s, bufsize | 0x4000);
    i = ((cache_idx >> 8) & 0xff) | 0x80;
    out_uint8(self->out_s, i);
    i = cache_idx & 0xff;
    out_uint8(self->out_s, i);
    out_uint8a(self->out_s, s->data, bufsize);
    return 0;
}

#if defined(XRDP_JPEG)
/*****************************************************************************/
static int
xrdp_orders_send_as_jpeg(struct xrdp_orders *self,
                         int width, int height, int bpp, int hints)
{
    if (hints & 1)
    {
        return 0;
    }

    if (bpp != 24)
    {
        return 0;
    }

    if (width * height < 64)
    {
        return 0;
    }

    return 1;
}
#endif

#if defined(XRDP_NEUTRINORDP)
/*****************************************************************************/
/*  secondary drawing order (bitmap v3) using remotefx compression */
static int APP_CC
xrdp_orders_send_as_rfx(struct xrdp_orders *self,
                        int width, int height, int bpp,
                        int hints)
{
    if (hints & 1)
    {
        return 0;
    }

    if (bpp != 24)
    {
        return 0;
    }

    LLOGLN(10, ("width %d height %d rfx_min_pixel %d", width, height,
                self->rfx_min_pixel));
    if (width * height < self->rfx_min_pixel)
    {
        return 0;
    }

    return 1;
}
#endif

#if defined(XRDP_JPEG) || defined(XRDP_NEUTRINORDP)
/*****************************************************************************/
static int APP_CC
xrdp_orders_out_v3(struct xrdp_orders *self, int cache_id, int cache_idx,
                   char *buf, int bufsize, int width, int height, int bpp,
                   int codec_id)
{
    int Bpp;
    int order_flags;
    int len;
    int i;

    Bpp = (bpp + 7) / 8;
    if (xrdp_orders_check(self, bufsize + 30) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (bufsize + 22) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    i = (((Bpp + 2) << 3) & 0x38) | (cache_id & 7);
    out_uint16_le(self->out_s, i); /* flags */
    out_uint8(self->out_s, RDP_ORDER_BMPCACHE3); /* type */
    /* cache index */
    out_uint16_le(self->out_s, cache_idx);
    /* persistent cache key 1/2 */
    out_uint32_le(self->out_s, 0);
    out_uint32_le(self->out_s, 0);
    /* bitmap data */
    out_uint8(self->out_s, bpp);
    out_uint8(self->out_s, 0); /* reserved */
    out_uint8(self->out_s, 0); /* reserved */
    out_uint8(self->out_s, codec_id);
    out_uint16_le(self->out_s, width);
    out_uint16_le(self->out_s, height);
    out_uint32_le(self->out_s, bufsize);
    out_uint8a(self->out_s, buf, bufsize);
    return 0;
}
#endif

/*****************************************************************************/
/*  secondary drawing order (bitmap v3) using remotefx compression */
int APP_CC
xrdp_orders_send_bitmap3(struct xrdp_orders *self,
                         int width, int height, int bpp, char *data,
                         int cache_id, int cache_idx, int hints)
{
    struct xrdp_client_info *ci;
#if defined(XRDP_JPEG) || defined(XRDP_NEUTRINORDP)
    int bufsize;
    struct stream *xr_s; /* xrdp stream */
#endif
#if defined(XRDP_JPEG)
    int e;
    int quality;
    struct stream *temp_s; /* xrdp stream */
#endif
#if defined(XRDP_NEUTRINORDP)
    STREAM *fr_s; /* FreeRDP stream */
    RFX_CONTEXT *context;
    RFX_RECT rect;
#endif

    ci = &(self->rdp_layer->client_info);

    if (ci->v3_codec_id == 0)
    {
        return 2;
    }

    if (ci->v3_codec_id == ci->rfx_codec_id)
    {
#if defined(XRDP_NEUTRINORDP)

        if (!xrdp_orders_send_as_rfx(self, width, height, bpp, hints))
        {
            return 2;
        }

        LLOGLN(10, ("xrdp_orders_send_bitmap3: rfx"));
        context = (RFX_CONTEXT *)(self->rdp_layer->rfx_enc);
        make_stream(xr_s);
        init_stream(xr_s, 16384);
        fr_s = stream_new(0);
        stream_attach(fr_s, (tui8 *)(xr_s->data), 16384);
        rect.x = 0;
        rect.y = 0;
        rect.width = width;
        rect.height = height;
        rfx_compose_message(context, fr_s, &rect, 1, (tui8 *)data, width,
                            height, width * 4);
        bufsize = stream_get_length(fr_s);
        xrdp_orders_out_v3(self, cache_id, cache_idx, (char *)(fr_s->data),
                           bufsize, width, height, bpp, ci->v3_codec_id);
        stream_detach(fr_s);
        stream_free(fr_s);
        free_stream(xr_s);
        return 0;
#else
        return 2;
#endif
    }
    else if (ci->v3_codec_id == ci->jpeg_codec_id)
    {
#if defined(XRDP_JPEG)

        if (!xrdp_orders_send_as_jpeg(self, width, height, bpp, hints))
        {
            LLOGLN(10, ("xrdp_orders_send_bitmap3: jpeg skipped"));
            return 2;
        }

        LLOGLN(10, ("xrdp_orders_send_bitmap3: jpeg"));
        e = width % 4;

        if (e != 0)
        {
            e = 4 - e;
        }

        make_stream(xr_s);
        init_stream(xr_s, 16384);
        make_stream(temp_s);
        init_stream(temp_s, 16384);
        quality = ci->jpeg_prop[0];
        xrdp_jpeg_compress(self->jpeg_han, data, width, height, xr_s, bpp, 16384,
                           height - 1, temp_s, e, quality);
        s_mark_end(xr_s);
        bufsize = (int)(xr_s->end - xr_s->data);
        xrdp_orders_out_v3(self, cache_id, cache_idx, (char *)(xr_s->data), bufsize,
                           width + e, height, bpp, ci->v3_codec_id);
        free_stream(xr_s);
        free_stream(temp_s);
        return 0;
#else
        return 2;
#endif
    }
    else
    {
        g_writeln("xrdp_orders_send_bitmap3: todo unknown codec");
        return 1;
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
/* send a brush cache entry */
int APP_CC
xrdp_orders_send_brush(struct xrdp_orders *self, int width, int height,
                       int bpp, int type, int size, char *data, int cache_id)
{
    int order_flags = 0;
    int len = 0;

    if (xrdp_orders_check(self, size + 12) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
    out_uint8(self->out_s, order_flags);
    len = (size + 6) - 7; /* length after type minus 7 */
    out_uint16_le(self->out_s, len);
    out_uint16_le(self->out_s, 0); /* flags */
    out_uint8(self->out_s, RDP_ORDER_BRUSHCACHE); /* type */
    out_uint8(self->out_s, cache_id);
    out_uint8(self->out_s, bpp);
    out_uint8(self->out_s, width);
    out_uint8(self->out_s, height);
    out_uint8(self->out_s, type);
    out_uint8(self->out_s, size);
    out_uint8a(self->out_s, data, size);
    return 0;
}

/*****************************************************************************/
/* returns error */
/* send an off screen bitmap entry */
int APP_CC
xrdp_orders_send_create_os_surface(struct xrdp_orders *self, int id,
                                   int width, int height,
                                   struct list *del_list)
{
    int order_flags;
    int cache_id;
    int flags;
    int index;
    int bytes;
    int num_del_list;

    bytes = 7;
    num_del_list = del_list->count;

    if (num_del_list > 0)
    {
        bytes += 2;
        bytes += num_del_list * 2;
    }

    if (xrdp_orders_check(self, bytes) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_SECONDARY;
    order_flags |= 1 << 2; /* type RDP_ORDER_ALTSEC_CREATE_OFFSCR_BITMAP */
    out_uint8(self->out_s, order_flags);
    cache_id = id & 0x7fff;
    LLOGLN(10, ("xrdp_orders_send_create_os_surface: cache_id %d", cache_id));
    flags = cache_id;

    if (num_del_list > 0)
    {
        flags |= 0x8000;
    }

    out_uint16_le(self->out_s, flags);
    out_uint16_le(self->out_s, width);
    out_uint16_le(self->out_s, height);

    if (num_del_list > 0)
    {
        /* delete list */
        out_uint16_le(self->out_s, num_del_list);

        for (index = 0; index < num_del_list; index++)
        {
            cache_id = list_get_item(del_list, index) & 0x7fff;
            out_uint16_le(self->out_s, cache_id);
        }
    }

    return 0;
}

/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_orders_send_switch_os_surface(struct xrdp_orders *self, int id)
{
    int order_flags;
    int cache_id;

    if (xrdp_orders_check(self, 3) != 0)
    {
        return 1;
    }
    self->order_count++;
    order_flags = RDP_ORDER_SECONDARY;
    order_flags |= 0 << 2; /* type RDP_ORDER_ALTSEC_SWITCH_SURFACE */
    out_uint8(self->out_s, order_flags);
    cache_id = id & 0xffff;
    out_uint16_le(self->out_s, cache_id);
    return 0;
}