src/gallium/state_trackers/omx/entrypoint.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2013 Advanced Micro Devices, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /*
  29  * Authors:
  30  *      Christian König <christian.koenig@amd.com>
  31  *
  32  */
  33
  34 #include <assert.h>
  35 #include <string.h>
  36 #include <stdbool.h>
  37
  38 #if defined(HAVE_X11_PLATFORM)
  39 #include <X11/Xlib.h>
  40 #else
  41 #define XOpenDisplay(x) NULL
  42 #define XCloseDisplay(x)
  43 #define Display void
  44 #endif
  45
  46 #include "os/os_thread.h"
  47 #include "util/u_memory.h"
  48 #include "loader/loader.h"
  49
  50 #include "entrypoint.h"
  51 #include "vid_dec.h"
  52 #include "vid_enc.h"
  53
  54 static mtx_t omx_lock = _MTX_INITIALIZER_NP;
  55 static Display *omx_display = NULL;
  56 static struct vl_screen *omx_screen = NULL;
  57 static unsigned omx_usecount = 0;
  58 static const char *omx_render_node = NULL;
  59 static int drm_fd;
  60
  61 int omx_component_library_Setup(stLoaderComponentType **stComponents)
  62 {
  63    OMX_ERRORTYPE r;
  64
  65    if (stComponents == NULL)
  66       return 2;
  67
  68    /* component 0 - video decoder */
  69    r = vid_dec_LoaderComponent(stComponents[0]);
  70    if (r != OMX_ErrorNone)
  71       return OMX_ErrorInsufficientResources;
  72
  73    /* component 1 - video encoder */
  74    r = vid_enc_LoaderComponent(stComponents[1]);
  75    if (r != OMX_ErrorNone)
  76       return OMX_ErrorInsufficientResources;
  77
  78    return 2;
  79 }
  80
  81 struct vl_screen *omx_get_screen(void)
  82 {
  83    static bool first_time = true;
  84    mtx_lock(&omx_lock);
  85
  86    if (!omx_screen) {
  87       if (first_time) {
  88          omx_render_node = debug_get_option("OMX_RENDER_NODE", NULL);
  89          first_time = false;
  90       }
  91       if (omx_render_node) {
  92          drm_fd = loader_open_device(omx_render_node);
  93          if (drm_fd < 0)
  94             goto error;
  95
  96          omx_screen = vl_drm_screen_create(drm_fd);
  97          if (!omx_screen) {
  98             close(drm_fd);
  99             goto error;
 100          }
 101       } else {
 102          omx_display = XOpenDisplay(NULL);
 103          if (!omx_display)
 104             goto error;
 105
 106          omx_screen = vl_dri3_screen_create(omx_display, 0);
 107          if (!omx_screen)
 108             omx_screen = vl_dri2_screen_create(omx_display, 0);
 109          if (!omx_screen) {
 110             XCloseDisplay(omx_display);
 111             goto error;
 112          }
 113       }
 114    }
 115
 116    ++omx_usecount;
 117
 118    mtx_unlock(&omx_lock);
 119    return omx_screen;
 120
 121 error:
 122    mtx_unlock(&omx_lock);
 123    return NULL;
 124 }
 125
 126 void omx_put_screen(void)
 127 {
 128    mtx_lock(&omx_lock);
 129    if ((--omx_usecount) == 0) {
 130       omx_screen->destroy(omx_screen);
 131       omx_screen = NULL;
 132
 133       if (omx_render_node)
 134          close(drm_fd);
 135       else
 136          XCloseDisplay(omx_display);
 137    }
 138    mtx_unlock(&omx_lock);
 139 }
 140
 141 OMX_ERRORTYPE omx_workaround_Destructor(OMX_COMPONENTTYPE *comp)
 142 {
 143    omx_base_component_PrivateType* priv = (omx_base_component_PrivateType*)comp->pComponentPrivate;
 144
 145    priv->state = OMX_StateInvalid;
 146    tsem_up(priv->messageSem);
 147
 148    /* wait for thread to exit */
 149    pthread_join(priv->messageHandlerThread, NULL);
 150
 151    return omx_base_component_Destructor(comp);
 152 }