text: /*
   * Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
   *
   * This file is part of FFmpeg.
   *
   * FFmpeg is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * FFmpeg 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
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with FFmpeg; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  #include <stdio.h>
  #include <string.h>              /* for memset() */
  #include <stdlib.h>
  #include <inttypes.h>
  
  #include "libavutil/mem.h"
  
  #include "libswscale/swscale.h"
  #include "libswscale/rgb2rgb.h"
  
  #define SIZE    1000
  #define srcByte 0x55
  #define dstByte 0xBB
  
  #define FUNC(s, d, n) { s, d, #n, n }
  
  int main(int argc, char **argv)
  {
      int i, funcNum;
      uint8_t *srcBuffer = av_malloc(SIZE);
      uint8_t *dstBuffer = av_malloc(SIZE);
      int failedNum      = 0;
      int passedNum      = 0;
  
      if (!srcBuffer || !dstBuffer)
          return -1;
  
      av_log(NULL, AV_LOG_INFO, "memory corruption test ...\n");
      ff_sws_rgb2rgb_init();
  
      for (funcNum = 0; ; funcNum++) {
          struct func_info_s {
              int src_bpp;
              int dst_bpp;
              const char *name;
              void (*func)(const uint8_t *src, uint8_t *dst, int src_size);
          } func_info[] = {
              FUNC(2, 2, rgb12to15),
              FUNC(2, 2, rgb15to16),
              FUNC(2, 3, rgb15to24),
              FUNC(2, 4, rgb15to32),
              FUNC(2, 3, rgb16to24),
              FUNC(2, 4, rgb16to32),
              FUNC(3, 2, rgb24to15),
              FUNC(3, 2, rgb24to16),
              FUNC(3, 4, rgb24to32),
              FUNC(4, 2, rgb32to15),
              FUNC(4, 2, rgb32to16),
              FUNC(4, 3, rgb32to24),
              FUNC(2, 2, rgb16to15),
              FUNC(2, 2, rgb12tobgr12),
              FUNC(2, 2, rgb15tobgr15),
              FUNC(2, 2, rgb15tobgr16),
              FUNC(2, 3, rgb15tobgr24),
              FUNC(2, 4, rgb15tobgr32),
              FUNC(2, 2, rgb16tobgr15),
              FUNC(2, 2, rgb16tobgr16),
              FUNC(2, 3, rgb16tobgr24),
              FUNC(2, 4, rgb16tobgr32),
              FUNC(3, 2, rgb24tobgr15),
              FUNC(3, 2, rgb24tobgr16),
              FUNC(3, 3, rgb24tobgr24),
              FUNC(3, 4, rgb24tobgr32),
              FUNC(4, 2, rgb32tobgr15),
              FUNC(4, 2, rgb32tobgr16),
              FUNC(4, 3, rgb32tobgr24),
              FUNC(4, 4, shuffle_bytes_2103), /* rgb32tobgr32 */
              FUNC(6, 6, rgb48tobgr48_nobswap),
              FUNC(6, 6, rgb48tobgr48_bswap),
              FUNC(8, 6, rgb64to48_nobswap),
              FUNC(8, 6, rgb64to48_bswap),
              FUNC(8, 6, rgb64tobgr48_nobswap),
              FUNC(8, 6, rgb64tobgr48_bswap),
              FUNC(0, 0, NULL)
          };
          int width;
          int failed = 0;
          int srcBpp = 0;
          int dstBpp = 0;
  
          if (!func_info[funcNum].func)
              break;
  
          av_log(NULL, AV_LOG_INFO, ".");
          memset(srcBuffer, srcByte, SIZE);
  
          for (width = 63; width > 0; width--) {
              int dstOffset;
              for (dstOffset = 128; dstOffset < 196; dstOffset += 4) {
                  int srcOffset;
                  memset(dstBuffer, dstByte, SIZE);
  
                  for (srcOffset = 128; srcOffset < 196; srcOffset += 4) {
                      uint8_t *src     = srcBuffer + srcOffset;
                      uint8_t *dst     = dstBuffer + dstOffset;
                      const char *name = NULL;
  
                      // don't fill the screen with shit ...
                      if (failed)
                          break;
  
                      srcBpp = func_info[funcNum].src_bpp;
                      dstBpp = func_info[funcNum].dst_bpp;
                      name   = func_info[funcNum].name;
  
                      func_info[funcNum].func(src, dst, width * srcBpp);
  
                      if (!srcBpp)
                          break;
  
                      for (i = 0; i < SIZE; i++) {
                          if (srcBuffer[i] != srcByte) {
                              av_log(NULL, AV_LOG_INFO,
                                     "src damaged at %d w:%d src:%d dst:%d %s\n",
                                     i, width, srcOffset, dstOffset, name);
                              failed = 1;
                              break;
                          }
                      }
                      for (i = 0; i < dstOffset; i++) {
                          if (dstBuffer[i] != dstByte) {
                              av_log(NULL, AV_LOG_INFO,
                                     "dst damaged at %d w:%d src:%d dst:%d %s\n",
                                     i, width, srcOffset, dstOffset, name);
                              failed = 1;
                              break;
                          }
                      }
                      for (i = dstOffset + width * dstBpp; i < SIZE; i++) {
                          if (dstBuffer[i] != dstByte) {
                              av_log(NULL, AV_LOG_INFO,
                                     "dst damaged at %d w:%d src:%d dst:%d %s\n",
                                     i, width, srcOffset, dstOffset, name);
                              failed = 1;
                              break;
                          }
                      }
                  }
              }
          }
          if (failed)
              failedNum++;
          else if (srcBpp)
              passedNum++;
      }
  
      av_log(NULL, AV_LOG_INFO,
             "\n%d converters passed, %d converters randomly overwrote memory\n",
             passedNum, failedNum);
      return failedNum;
  }
  