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 #include <X11/Xlib.h>
  39
  40 #include "os/os_thread.h"
  41 #include "util/u_memory.h"
  42 #include "loader/loader.h"
  43
  44 #include "entrypoint.h"
  45 #include "vid_dec.h"
  46 #include "vid_enc.h"
  47
  48 static mtx_t omx_lock = _MTX_INITIALIZER_NP;
  49 static Display *omx_display = NULL;
  50 static struct vl_screen *omx_screen = NULL;
  51 static unsigned omx_usecount = 0;
  52 static const char *omx_render_node = NULL;
  53 static int drm_fd;
  54
  55 int omx_component_library_Setup(stLoaderComponentType **stComponents)
  56 {
  57    OMX_ERRORTYPE r;
  58
  59    if (stComponents == NULL)
  60       return 2;
  61
  62    /* component 0 - video decoder */
  63    r = vid_dec_LoaderComponent(stComponents[0]);
  64    if (r != OMX_ErrorNone)
  65       return OMX_ErrorInsufficientResources;
  66
  67    /* component 1 - video encoder */
  68    r = vid_enc_LoaderComponent(stComponents[1]);
  69    if (r != OMX_ErrorNone)
  70       return OMX_ErrorInsufficientResources;
  71
  72    return 2;
  73 }
  74
  75 struct vl_screen *omx_get_screen(void)
  76 {
  77    static bool first_time = true;
  78    mtx_lock(&omx_lock);
  79
  80    if (!omx_screen) {
  81       if (first_time) {
  82          omx_render_node = debug_get_option("OMX_RENDER_NODE", NULL);
  83          first_time = false;
  84       }
  85       if (omx_render_node) {
  86          drm_fd = loader_open_device(omx_render_node);
  87          if (drm_fd < 0)
  88             goto error;
  89
  90          omx_screen = vl_drm_screen_create(drm_fd);
  91          if (!omx_screen) {
  92             close(drm_fd);
  93             goto error;
  94          }
  95       } else {
  96          omx_display = XOpenDisplay(NULL);
  97          if (!omx_display)
  98             goto error;
  99
 100          omx_screen = vl_dri2_screen_create(omx_display, 0);
 101          if (!omx_screen) {
 102             XCloseDisplay(omx_display);
 103             goto error;
 104          }
 105       }
 106    }
 107
 108    ++omx_usecount;
 109
 110    pipe_mutex_unlock(omx_lock);
 111    return omx_screen;
 112
 113 error:
 114    pipe_mutex_unlock(omx_lock);
 115    return NULL;
 116 }
 117
 118 void omx_put_screen(void)
 119 {
 120    mtx_lock(&omx_lock);
 121    if ((--omx_usecount) == 0) {
 122       omx_screen->destroy(omx_screen);
 123       omx_screen = NULL;
 124
 125       if (omx_render_node)
 126          close(drm_fd);
 127       else
 128          XCloseDisplay(omx_display);
 129    }
 130    pipe_mutex_unlock(omx_lock);
 131 }
 132
 133 OMX_ERRORTYPE omx_workaround_Destructor(OMX_COMPONENTTYPE *comp)
 134 {
 135    omx_base_component_PrivateType* priv = (omx_base_component_PrivateType*)comp->pComponentPrivate;
 136
 137    priv->state = OMX_StateInvalid;
 138    tsem_up(priv->messageSem);
 139
 140    /* wait for thread to exit */
 141    pthread_join(priv->messageHandlerThread, NULL);
 142
 143    return omx_base_component_Destructor(comp);
 144 }