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Diffstat (limited to 'Source/DirectFB/systems/x11/x11image.c')
| -rwxr-xr-x | Source/DirectFB/systems/x11/x11image.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/Source/DirectFB/systems/x11/x11image.c b/Source/DirectFB/systems/x11/x11image.c new file mode 100755 index 0000000..acf36f0 --- /dev/null +++ b/Source/DirectFB/systems/x11/x11image.c @@ -0,0 +1,231 @@ +/* + (c) Copyright 2001-2009 The world wide DirectFB Open Source Community (directfb.org) + (c) Copyright 2000-2004 Convergence (integrated media) GmbH + + All rights reserved. + + Written by Denis Oliver Kropp <dok@directfb.org>, + Andreas Hundt <andi@fischlustig.de>, + Sven Neumann <neo@directfb.org>, + Ville Syrjälä <syrjala@sci.fi> and + Claudio Ciccani <klan@users.sf.net>. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ + +#include <config.h> + +#include <string.h> +#include <stdlib.h> +#include <stdio.h> + +#include "x11.h" +#include "x11image.h" + +/**********************************************************************************************************************/ + +DFBResult x11ImageInit( DFBX11 *x11, + x11Image *image, + int width, + int height, + DFBSurfacePixelFormat format ) +{ + int ret; + Visual *visual; + DFBX11Shared *shared = x11->shared; + + if (!x11->use_shm) + return DFB_UNSUPPORTED; + + /* Lookup visual. */ + visual = x11->visuals[DFB_PIXELFORMAT_INDEX(format)]; + if (!visual) + return DFB_UNSUPPORTED; + + /* For probing. */ + if (!image) + return DFB_OK; + + image->width = width; + image->height = height; + image->format = format; + image->depth = DFB_COLOR_BITS_PER_PIXEL( format ); + + D_MAGIC_SET( image, x11Image ); + + if (fusion_call_execute( &shared->call, FCEF_NONE, X11_IMAGE_INIT, image, &ret )) { + D_MAGIC_CLEAR( image ); + return DFB_FUSION; + } + + if (ret) { + D_DERROR( ret, "X11/Image: X11_IMAGE_INIT call failed!\n" ); + D_MAGIC_CLEAR( image ); + return ret; + } + + return DFB_OK; +} + +DFBResult +x11ImageDestroy( DFBX11 *x11, + x11Image *image ) +{ + int ret; + DFBX11Shared *shared = x11->shared; + + D_MAGIC_ASSERT( image, x11Image ); + + if (fusion_call_execute( &shared->call, FCEF_NONE, X11_IMAGE_DESTROY, image, &ret )) + return DFB_FUSION; + + if (ret) { + D_DERROR( ret, "X11/Image: X11_IMAGE_DESTROY call failed!\n" ); + return ret; + } + + D_MAGIC_CLEAR( image ); + + return DFB_OK; +} + +DFBResult +x11ImageAttach( x11Image *image, + void **ret_addr ) +{ + void *addr; + + D_MAGIC_ASSERT( image, x11Image ); + D_ASSERT( ret_addr != NULL ); + + /* FIXME: We also need to DETACH! */ + + addr = shmat( image->seginfo.shmid, NULL, 0 ); + if (!addr) { + int erno = errno; + + D_PERROR( "X11/Image: shmat( %d ) failed!\n", image->seginfo.shmid ); + + return errno2result( erno ); + } + + *ret_addr = addr; + + return DFB_OK; +} + +/**********************************************************************************************************************/ + +DFBResult +dfb_x11_image_init_handler( DFBX11 *x11, x11Image *image ) +{ + Visual *visual; + XImage *ximage; + + D_MAGIC_ASSERT( image, x11Image ); + + if (!x11->use_shm) + return DFB_UNSUPPORTED; + + /* Lookup visual. */ + visual = x11->visuals[DFB_PIXELFORMAT_INDEX(image->format)]; + if (!visual) + return DFB_UNSUPPORTED; + + image->visual = visual; + + XLockDisplay( x11->display ); + + ximage = XShmCreateImage( x11->display, image->visual, image->depth, + ZPixmap, NULL, &image->seginfo, image->width, image->height ); + if (!ximage) { + D_ERROR( "X11/ShmImage: Error creating shared image (XShmCreateImage)!\n"); + XUnlockDisplay( x11->display ); + return DFB_FAILURE; + } + + /* we firstly create our shared memory segment with the size we need, and + correct permissions for the owner, the group and the world --> 0777 */ + image->seginfo.shmid = shmget( IPC_PRIVATE, + ximage->bytes_per_line * ximage->height, + IPC_CREAT | 0777 ); + if (image->seginfo.shmid < 0) + goto error; + + /* Then, we have to attach the segment to our process, and we let the + function search the correct memory place --> NULL. It's safest ! */ + image->seginfo.shmaddr = shmat( image->seginfo.shmid, NULL, 0 ); + if (!image->seginfo.shmaddr) + goto error_shmat; + + ximage->data = image->seginfo.shmaddr; + + /* We set the buffer in Read and Write mode */ + image->seginfo.readOnly = False; + + if (!XShmAttach( x11->display, &image->seginfo )) + goto error_xshmattach; + + image->ximage = ximage; + image->pitch = ximage->bytes_per_line; + + image->pixmap = XShmCreatePixmap( x11->display, DefaultRootWindow(x11->display), ximage->data, + &image->seginfo, image->width, image->height, image->depth ); + + image->gc = XCreateGC( x11->display, image->pixmap, 0, NULL ); + + XUnlockDisplay( x11->display ); + + return DFB_OK; + + +error_xshmattach: + shmdt( image->seginfo.shmaddr ); + +error_shmat: + shmctl( image->seginfo.shmid, IPC_RMID, NULL ); + +error: + XDestroyImage( ximage ); + + XUnlockDisplay( x11->display ); + + return DFB_FAILURE; +} + +DFBResult +dfb_x11_image_destroy_handler( DFBX11 *x11, x11Image *image ) +{ + D_MAGIC_ASSERT( image, x11Image ); + + XLockDisplay( x11->display ); + + XFreeGC( x11->display, image->gc ); + XFreePixmap( x11->display, image->pixmap ); + + XShmDetach( x11->display, &image->seginfo ); + + XDestroyImage( image->ximage ); + + XUnlockDisplay( x11->display ); + + shmdt( image->seginfo.shmaddr ); + + shmctl( image->seginfo.shmid, IPC_RMID, NULL ); + + return DFB_OK; +} + |