/**************************************************************************** * libnx/nxmu/nx_getrectangle.c * * Copyright (C) 2011-2013 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #include #include #include /**************************************************************************** * 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, of 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_FEATURES if (!hwnd || !rect || !dest) { ginfo("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; }