/******************************************************************************
 *
 * Project:  OpenCPN
 *
 ***************************************************************************
 *   Copyright (C) 2013 by David S. Register                               *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,  USA.         *
 ***************************************************************************
 */

#include "glTextureDescriptor.h"
#include <wx/thread.h>

#if defined(__OCPN__ANDROID__)
#include <GLES2/gl2.h>
#elif defined(__WXQT__) || defined(__WXGTK__)
#include <GL/glew.h>
#endif

wxCriticalSection gs_critSect;

glTextureDescriptor::glTextureDescriptor() {
  for (int i = 0; i < 10; i++) {
    map_array[i] = NULL;
    comp_array[i] = NULL;
    compcomp_array[i] = NULL;
    compcomp_size[i] = 0;
  }

  tex_name = 0;
  nGPU_compressed = GPU_TEXTURE_UNKNOWN;
  tex_mem_used = 0;
  compdata_ticks = 0;
}

glTextureDescriptor::~glTextureDescriptor() { FreeAll(); }

void glTextureDescriptor::FreeAll() {
  FreeMap();
  FreeComp();
  FreeCompComp();
}

void glTextureDescriptor::FreeMap() {
  for (int i = 0; i < 10; i++) {
    free(map_array[i]);
    map_array[i] = 0;
  }
}

void glTextureDescriptor::FreeComp() {
  for (int i = 0; i < 10; i++) {
    free(comp_array[i]);
    comp_array[i] = NULL;
  }
}

void glTextureDescriptor::FreeCompComp() {
  for (int i = 0; i < 10; i++) {
    free(compcomp_array[i]);
    compcomp_array[i] = NULL;
    compcomp_size[i] = 0;
  }
}

size_t glTextureDescriptor::GetMapArrayAlloc(void) {
  size_t size = 512 * 512 * 3;
  size_t ret = 0;
  for (int i = 0; i < 10; i++) {
    if (map_array[i]) {
      ret += size;
    }
    size /= 4;
  }

  return ret;
}

size_t glTextureDescriptor::GetCompArrayAlloc(void) {
  size_t size = (512 * 512 * 3) / 6;
  size_t ret = 0;
  for (int i = 0; i < 10; i++) {
    if (comp_array[i]) {
      ret += size;
    }
    size /= 4;
  }

  return ret;
}

size_t glTextureDescriptor::GetCompCompArrayAlloc(void) {
  size_t ret = 0;
  for (int i = 0; i < 10; i++) {
    if (compcomp_size[i]) ret += compcomp_size[i];
  }

  return ret;
}

bool glTextureDescriptor::IsCompCompArrayComplete(int base_level) {
  extern int g_mipmap_max_level;
  for (int level = base_level; level < g_mipmap_max_level + 1; level++)
    if (!compcomp_array[level]) return false;

  return true;
}
