/****************************************************************************
* graphics/nxmu/nx_getrectangle.c
*
* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <mqueue.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/nx/nx.h>
#include "nxfe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nx_getrectangle
*
* Description:
* Get the raw contents of graphic memory within a rectangular region. NOTE:
* Since raw graphic memory is returned, the returned memory content may be
* the memory of windows above this one and may not necessarily belong to
* this window unless you assure that this is the top window.
*
* Input Parameters:
* wnd - The window structure reference
* rect - The location to be copied
* plane - Specifies the color plane to get from.
* dest - The location to copy the memory region
* deststride - The width, in bytes, the the dest memory
*
* Return:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
int nx_getrectangle(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
unsigned int plane, FAR uint8_t *dest,
unsigned int deststride)
{
FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
struct nxsvrmsg_getrectangle_s outmsg;
int ret;
sem_t sem_done;
#ifdef CONFIG_DEBUG
if (!hwnd || !rect || !dest)
{
gvdbg("Invalid parameters\n");
set_errno(EINVAL);
return ERROR;
}
#endif
/* Format the fill command */
outmsg.msgid = NX_SVRMSG_GETRECTANGLE;
outmsg.wnd = wnd;
outmsg.plane = plane;
outmsg.dest = dest;
outmsg.deststride = deststride;
nxgl_rectcopy(&outmsg.rect, rect);
/* Create a semaphore for tracking command completion */
outmsg.sem_done = &sem_done;
ret = sem_init(&sem_done, 0, 0);
if (ret != OK)
{
gdbg("sem_init failed: %d\n", errno);
return ret;
}
/* Forward the fill command to the server */
ret = nxmu_sendwindow(wnd, &outmsg, sizeof(struct nxsvrmsg_getrectangle_s));
/* Wait that the command is completed, so that caller can release the buffer. */
if (ret == OK)
{
ret = sem_wait(&sem_done);
}
/* Destroy the semaphore and return. */
sem_destroy(&sem_done);
return ret;
}
