| /************************************************************************** |
| * |
| * Copyright 2013 Advanced Micro Devices, Inc. |
| * All Rights Reserved. |
| * |
| * 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, sub license, 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 NON-INFRINGEMENT. |
| * IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. |
| * |
| **************************************************************************/ |
| |
| #include <assert.h> |
| #include <string.h> |
| #include <stdbool.h> |
| |
| #if defined(HAVE_X11_PLATFORM) |
| #include <X11/Xlib.h> |
| #else |
| #define XOpenDisplay(x) NULL |
| #define XCloseDisplay(x) |
| #define Display void |
| #endif |
| |
| #include "os/os_thread.h" |
| #include "util/u_memory.h" |
| #include "loader/loader.h" |
| |
| #include "vid_omx_common.h" |
| |
| static mtx_t omx_lock = _MTX_INITIALIZER_NP; |
| static Display *omx_display = NULL; |
| static struct vl_screen *omx_screen = NULL; |
| static unsigned omx_usecount = 0; |
| static const char *omx_render_node = NULL; |
| static int drm_fd; |
| |
| struct vl_screen *omx_get_screen(void) |
| { |
| static bool first_time = true; |
| mtx_lock(&omx_lock); |
| |
| if (!omx_screen) { |
| if (first_time) { |
| omx_render_node = debug_get_option("OMX_RENDER_NODE", NULL); |
| first_time = false; |
| } |
| if (omx_render_node) { |
| drm_fd = loader_open_device(omx_render_node); |
| if (drm_fd < 0) |
| goto error; |
| |
| omx_screen = vl_drm_screen_create(drm_fd); |
| if (!omx_screen) { |
| close(drm_fd); |
| goto error; |
| } |
| } else { |
| omx_display = XOpenDisplay(NULL); |
| if (!omx_display) |
| goto error; |
| |
| omx_screen = vl_dri3_screen_create(omx_display, 0); |
| if (!omx_screen) |
| omx_screen = vl_dri2_screen_create(omx_display, 0); |
| if (!omx_screen) { |
| XCloseDisplay(omx_display); |
| goto error; |
| } |
| } |
| } |
| |
| ++omx_usecount; |
| |
| mtx_unlock(&omx_lock); |
| return omx_screen; |
| |
| error: |
| mtx_unlock(&omx_lock); |
| return NULL; |
| } |
| |
| void omx_put_screen(void) |
| { |
| mtx_lock(&omx_lock); |
| if ((--omx_usecount) == 0) { |
| omx_screen->destroy(omx_screen); |
| omx_screen = NULL; |
| |
| if (omx_render_node) |
| close(drm_fd); |
| else |
| XCloseDisplay(omx_display); |
| } |
| mtx_unlock(&omx_lock); |
| } |