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/**************************************************************************
*
* 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);
}
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