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      1 /*
      2  * Copyright (c) 2012 Intel Corporation. All Rights Reserved.
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the
      6  * "Software"), to deal in the Software without restriction, including
      7  * without limitation the rights to use, copy, modify, merge, publish,
      8  * distribute, sub license, and/or sell copies of the Software, and to
      9  * permit persons to whom the Software is furnished to do so, subject to
     10  * the following conditions:
     11  *
     12  * The above copyright notice and this permission notice (including the
     13  * next paragraph) shall be included in all copies or substantial portions
     14  * of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     19  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
     20  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     21  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     22  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 
     25 #include "sysdeps.h"
     26 #include <stdio.h>
     27 #include <stdlib.h>
     28 #include <stddef.h>
     29 #include <string.h>
     30 #include <va/va.h>
     31 #include "va_display.h"
     32 
     33 extern const VADisplayHooks va_display_hooks_android;
     34 extern const VADisplayHooks va_display_hooks_wayland;
     35 extern const VADisplayHooks va_display_hooks_x11;
     36 extern const VADisplayHooks va_display_hooks_drm;
     37 
     38 static const VADisplayHooks *g_display_hooks;
     39 static const VADisplayHooks *g_display_hooks_available[] = {
     40 #ifdef ANDROID
     41     &va_display_hooks_android,
     42 #else
     43 #ifdef HAVE_VA_WAYLAND
     44     &va_display_hooks_wayland,
     45 #endif
     46 #ifdef HAVE_VA_X11
     47     &va_display_hooks_x11,
     48 #endif
     49 #ifdef HAVE_VA_DRM
     50     &va_display_hooks_drm,
     51 #endif
     52 #endif
     53     NULL
     54 };
     55 
     56 static const char *g_display_name;
     57 
     58 static const char *
     59 get_display_name(int argc, char *argv[])
     60 {
     61     const char *display_name = NULL;
     62     int i;
     63 
     64     for (i = 1; i < argc; i++) {
     65         if (strcmp(argv[i], "--display") != 0)
     66             continue;
     67         argv[i] = NULL;
     68 
     69         if (++i < argc) {
     70             display_name = argv[i];
     71             argv[i] = NULL;
     72         }
     73     }
     74     return display_name;
     75 }
     76 
     77 static void
     78 print_display_names(void)
     79 {
     80     const VADisplayHooks **h;
     81 
     82     printf("Available displays:\n");
     83     for (h = g_display_hooks_available; *h != NULL; h++)
     84         printf("  %s\n", (*h)->name);
     85 }
     86 
     87 static void
     88 sanitize_args(int *argc, char *argv[])
     89 {
     90     char **out_args = argv;
     91     int i, n = *argc;
     92 
     93     for (i = 0; i < n; i++) {
     94         if (argv[i])
     95             *out_args++ = argv[i];
     96     }
     97     *out_args = NULL;
     98     *argc = out_args - argv;
     99 }
    100 
    101 void
    102 va_init_display_args(int *argc, char *argv[])
    103 {
    104     const char *display_name;
    105 
    106     display_name = get_display_name(*argc, argv);
    107     if (display_name && strcmp(display_name, "help") == 0) {
    108         print_display_names();
    109         exit(0);
    110     }
    111     g_display_name = display_name;
    112 
    113     sanitize_args(argc, argv);
    114 }
    115 
    116 VADisplay
    117 va_open_display(void)
    118 {
    119     VADisplay va_dpy = NULL;
    120     unsigned int i;
    121 
    122     for (i = 0; !va_dpy && g_display_hooks_available[i]; i++) {
    123         g_display_hooks = g_display_hooks_available[i];
    124         if (g_display_name &&
    125             strcmp(g_display_name, g_display_hooks->name) != 0)
    126             continue;
    127         if (!g_display_hooks->open_display)
    128             continue;
    129         va_dpy = g_display_hooks->open_display();
    130     }
    131 
    132     if (!va_dpy)  {
    133         fprintf(stderr, "error: failed to initialize display");
    134         if (g_display_name)
    135             fprintf(stderr, " '%s'", g_display_name);
    136         fprintf(stderr, "\n");
    137         abort();
    138     }
    139     return va_dpy;
    140 }
    141 
    142 void
    143 va_close_display(VADisplay va_dpy)
    144 {
    145     if (!va_dpy)
    146         return;
    147 
    148     if (g_display_hooks && g_display_hooks->close_display)
    149         g_display_hooks->close_display(va_dpy);
    150 }
    151 
    152 VAStatus
    153 va_put_surface(
    154     VADisplay          va_dpy,
    155     VASurfaceID        surface,
    156     const VARectangle *src_rect,
    157     const VARectangle *dst_rect
    158 )
    159 {
    160     if (!va_dpy)
    161         return VA_STATUS_ERROR_INVALID_DISPLAY;
    162 
    163     if (g_display_hooks && g_display_hooks->put_surface)
    164         return g_display_hooks->put_surface(va_dpy, surface, src_rect, dst_rect);
    165     return VA_STATUS_ERROR_UNIMPLEMENTED;
    166 }
    167