/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Android NPAPI support code
 *
 * The Initial Developer of the Original Code is
 * the Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Doug Turner <dougt@mozilla.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "assert.h"
#include "ANPBase.h"
#include <android/log.h>

#define LOG(args...)  __android_log_print(ANDROID_LOG_INFO, "GeckoPlugins" , ## args)
#define ASSIGN(obj, name)   (obj)->name = anp_bitmap_##name


#define SK_A32_BITS     8
#define SK_R32_BITS     8
#define SK_G32_BITS     8
#define SK_B32_BITS     8

#ifdef IS_BIG_ENDIAN
#define SK_R32_SHIFT    24
#define SK_G32_SHIFT    16
#define SK_B32_SHIFT    8
#define SK_A32_SHIFT    0
#else
#define SK_R32_SHIFT    0
#define SK_G32_SHIFT    8
#define SK_B32_SHIFT    16
#define SK_A32_SHIFT    24
#endif

#define SK_A32_MASK     ((1 << SK_A32_BITS) - 1)
#define SK_R32_MASK     ((1 << SK_R32_BITS) - 1)
#define SK_G32_MASK     ((1 << SK_G32_BITS) - 1)
#define SK_B32_MASK     ((1 << SK_B32_BITS) - 1)

#define SK_R16_BITS     5
#define SK_G16_BITS     6
#define SK_B16_BITS     5

#define SK_R16_SHIFT    (SK_B16_BITS + SK_G16_BITS)
#define SK_G16_SHIFT    (SK_B16_BITS)
#define SK_B16_SHIFT    0

#define SK_R16_MASK     ((1 << SK_R16_BITS) - 1)
#define SK_G16_MASK     ((1 << SK_G16_BITS) - 1)
#define SK_B16_MASK     ((1 << SK_B16_BITS) - 1)

bool
anp_bitmap_getPixelPacking(ANPBitmapFormat fmt, ANPPixelPacking* packing) {
  LOG("%s", __PRETTY_FUNCTION__);
  switch (fmt) {
    case kRGBA_8888_ANPBitmapFormat:
      if (packing) {
        packing->AShift = SK_A32_SHIFT;
        packing->ABits  = SK_A32_BITS;
        packing->RShift = SK_R32_SHIFT;
        packing->RBits  = SK_R32_BITS;
        packing->GShift = SK_G32_SHIFT;
        packing->GBits  = SK_G32_BITS;
        packing->BShift = SK_B32_SHIFT;
        packing->BBits  = SK_B32_BITS;
      }
      return true;
    case kRGB_565_ANPBitmapFormat:
      if (packing) {
        packing->AShift = 0;
        packing->ABits  = 0;
        packing->RShift = SK_R16_SHIFT;
        packing->RBits  = SK_R16_BITS;
        packing->GShift = SK_G16_SHIFT;
        packing->GBits  = SK_G16_BITS;
        packing->BShift = SK_B16_SHIFT;
        packing->BBits  = SK_B16_BITS;
      }
      return true;
  default:
    break;
  }
  return false;
}

void InitBitmapInterface(ANPBitmapInterfaceV0 *i) {
  _assert(i->inSize == sizeof(*i));
  ASSIGN(i, getPixelPacking);
}