| 0,0 → 1,138 |
|---|
| /* |
| * Copyright © 2011 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
| * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * Benjamin Franzke <benjaminfranzke@googlemail.com> |
| */ |
| |
| #include <stdio.h> |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <limits.h> |
| //#include <dlfcn.h> |
| |
| #include "backend.h" |
| |
| #define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0])) |
| |
| extern const struct gbm_backend gbm_dri_backend; |
| |
| struct backend_desc { |
| const char *name; |
| const struct gbm_backend *builtin; |
| }; |
| |
| static const struct backend_desc backends[] = { |
| { "gbm_dri.so", &gbm_dri_backend } |
| // { "gbm_gallium_drm.so", NULL }, |
| }; |
| |
| #if 0 |
| static const void * |
| load_backend(const struct backend_desc *backend) |
| { |
| char path[PATH_MAX]; |
| const void *init = NULL; |
| void *module; |
| const char *name; |
| const char *entrypoint = "gbm_backend"; |
| |
| if (backend == NULL) |
| return NULL; |
| |
| name = backend->name; |
| |
| if (backend->builtin) { |
| init = backend->builtin; |
| } else { |
| #if 0 |
| if (name[0] != '/') |
| snprintf(path, sizeof path, MODULEDIR "/%s", name); |
| else |
| snprintf(path, sizeof path, "%s", name); |
| |
| module = dlopen(path, RTLD_NOW | RTLD_GLOBAL); |
| if (!module) { |
| fprintf(stderr, |
| "failed to load module: %s\n", dlerror()); |
| return NULL; |
| } |
| |
| init = dlsym(module, entrypoint); |
| if (!init) |
| #endif |
| return NULL; |
| } |
| |
| return init; |
| } |
| |
| static const struct backend_desc * |
| find_backend(const char *name) |
| { |
| const struct backend_desc *backend = NULL; |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(backends); ++i) { |
| if (strcmp(backends[i].name, name) == 0) { |
| backend = &backends[i]; |
| break; |
| } |
| } |
| |
| return backend; |
| } |
| #endif |
| |
| struct gbm_device * |
| _gbm_create_device(int fd) |
| { |
| const struct gbm_backend *backend = NULL; |
| struct gbm_device *dev = NULL; |
| |
| #if 0 |
| int i; |
| const char *b; |
| |
| b = getenv("GBM_BACKEND"); |
| if (b) |
| backend = load_backend(find_backend(b)); |
| |
| if (backend) |
| dev = backend->create_device(fd); |
| |
| for (i = 0; i < ARRAY_SIZE(backends) && dev == NULL; ++i) { |
| backend = load_backend(&backends[i]); |
| if (backend == NULL) |
| continue; |
| |
| dev = backend->create_device(fd); |
| } |
| #endif |
| |
| backend = &gbm_dri_backend; |
| dev = backend->create_device(fd); |
| |
| return dev; |
| } |