145 lines
4.7 KiB
C
145 lines
4.7 KiB
C
/****************************************************************************
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* libnx/nxmu/nx_bitmap.c
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*
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* Copyright (C) 2008-2009, 2011-2013, 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/nx/nx.h>
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#include <nuttx/nx/nxbe.h>
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#include <nuttx/nx/nxmu.h>
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#include <nuttx/semaphore.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nx_bitmap
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*
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* Description:
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* Copy a rectangular region of a larger image into the rectangle in the
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* specified window.
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*
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* Input Parameters:
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* hwnd - The window that will receive the bitmap image
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* dest - Describes the rectangular region on the display that will receive the
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* the bit map.
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* src - The start of the source image.
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* origin - The origin of the upper, left-most corner of the full bitmap.
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* Both dest and origin are in window coordinates, however, origin
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* may lie outside of the display.
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* stride - The width of the full source image in pixels.
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*
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* Return:
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* OK on success; ERROR on failure with errno set appropriately
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*
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****************************************************************************/
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int nx_bitmap(NXWINDOW hwnd, FAR const struct nxgl_rect_s *dest,
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FAR const void *src[CONFIG_NX_NPLANES],
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FAR const struct nxgl_point_s *origin, unsigned int stride)
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{
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FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
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struct nxsvrmsg_bitmap_s outmsg;
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int i;
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int ret;
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sem_t sem_done;
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#ifdef CONFIG_DEBUG_FEATURES
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if (!wnd || !dest || !src || !origin)
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{
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set_errno(EINVAL);
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return ERROR;
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}
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#endif
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/* Format the bitmap command */
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outmsg.msgid = NX_SVRMSG_BITMAP;
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outmsg.wnd = wnd;
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outmsg.stride = stride;
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for (i = 0; i < CONFIG_NX_NPLANES; i++)
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{
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outmsg.src[i] = src[i];
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}
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outmsg.origin.x = origin->x;
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outmsg.origin.y = origin->y;
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nxgl_rectcopy(&outmsg.dest, dest);
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/* Create a semaphore for tracking command completion */
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outmsg.sem_done = &sem_done;
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ret = sem_init(&sem_done, 0, 0);
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if (ret != OK)
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{
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gerr("ERROR: sem_init failed: %d\n", errno);
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return ret;
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}
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/* The sem_done semaphore is used for signaling and, hence, should not have
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* priority inheritance enabled.
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*/
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(void)sem_setprotocol(&sem_done, SEM_PRIO_NONE);
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/* Forward the fill command to the server */
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ret = nxmu_sendwindow(wnd, &outmsg, sizeof(struct nxsvrmsg_bitmap_s));
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/* Wait that the command is completed, so that caller can release the buffer. */
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if (ret == OK)
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{
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ret = sem_wait(&sem_done);
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}
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/* Destroy the semaphore and return. */
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sem_destroy(&sem_done);
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return ret;
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}
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