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
  37 #include <X11/Xlib.h>
  38
  39 #include "os/os_thread.h"
  40 #include "util/u_memory.h"
  41
  42 #include "entrypoint.h"
  43 #include "vid_dec.h"
  44 #include "vid_enc.h"
  45
  46 pipe_static_mutex(omx_lock);
  47 static Display *omx_display = NULL;
  48 static struct vl_screen *omx_screen = NULL;
  49 static unsigned omx_usecount = 0;
  50
  51 int omx_component_library_Setup(stLoaderComponentType **stComponents)
  52 {
  53    OMX_ERRORTYPE r;
  54
  55    if (stComponents == NULL)
  56       return 2;
  57
  58    /* component 0 - video decoder */
  59    r = vid_dec_LoaderComponent(stComponents[0]);
  60    if (r != OMX_ErrorNone)
  61       return r;
  62
  63    /* component 1 - video encoder */
  64    r = vid_enc_LoaderComponent(stComponents[1]);
  65    if (r != OMX_ErrorNone)
  66       return r;
  67
  68    return 2;
  69 }
  70
  71 struct vl_screen *omx_get_screen(void)
  72 {
  73    pipe_mutex_lock(omx_lock);
  74
  75    if (!omx_display) {
  76       omx_display = XOpenDisplay(NULL);
  77       if (!omx_display) {
  78          pipe_mutex_unlock(omx_lock);
  79          return NULL;
  80       }
  81    }
  82
  83    if (!omx_screen) {
  84       omx_screen = vl_screen_create(omx_display, 0);
  85       if (!omx_screen) {
  86          pipe_mutex_unlock(omx_lock);
  87          return NULL;
  88       }
  89    }
  90
  91    ++omx_usecount;
  92
  93    pipe_mutex_unlock(omx_lock);
  94    return omx_screen;
  95 }
  96
  97 void omx_put_screen(void)
  98 {
  99    pipe_mutex_lock(omx_lock);
 100    if ((--omx_usecount) == 0) {
 101       vl_screen_destroy(omx_screen);
 102       XCloseDisplay(omx_display);
 103       omx_screen = NULL;
 104       omx_display = NULL;
 105    }
 106    pipe_mutex_unlock(omx_lock);
 107 }
 108
 109 OMX_ERRORTYPE omx_workaround_Destructor(OMX_COMPONENTTYPE *comp)
 110 {
 111    omx_base_component_PrivateType* priv = (omx_base_component_PrivateType*)comp->pComponentPrivate;
 112
 113    priv->state = OMX_StateInvalid;
 114    tsem_up(priv->messageSem);
 115
 116    /* wait for thread to exit */;
 117    pthread_join(priv->messageHandlerThread, NULL);
 118
 119    return omx_base_component_Destructor(comp);
 120 }