/*** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com**** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.**** Any non-GPL usage of this software or parts of this software is strictly** forbidden.**** The "appropriate copyright message" mentioned in section 2c of the GPLv2** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com"**** Commercial non-GPL licensing of this software is possible.** For more info contact Nero AG through Mpeg4AAClicense@nero.com.**/ #include <fenv.h> #include <stddef.h>#include <stdint.h>#include <string.h>#include <stdlib.h> #include "neaacdec.h" int feenableexcept(int excepts); int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {  size_t preamble = 2 + 2 + 1 + sizeof(NeAACDecConfiguration);  NeAACDecConfiguration config;  uint64_t sample_rate;  unsigned char num_channels;  NeAACDecConfigurationPtr config_ptr;  /* feenableexcept(FE_DIVBYZERO | FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW); */   if (size < preamble) return 0;  size_t len1 = data[0] | (data[1] << 8);  data += 2;  size_t len2 = data[0] | (data[1] << 8);  data += 2;  uint8_t flags = data[0];  data += 1;  memcpy(&config, data, sizeof(NeAACDecConfiguration));  data += sizeof(NeAACDecConfiguration);  size -= preamble;   if (len1 + len2 > size) return 0;  size_t len3 = size - len1 - len2;  int use_init2 = flags & 1;  int seek_before = flags & 2;  int seek_between = flags & 4;  size_t buffer_op = (flags >> 3) & 3;  int use_drm = flags & 32;  int drm_channels = (flags >> 5) & 7;  unsigned long drm_sample_rate = config.defSampleRate;  int res, ok;  const size_t kBufferSize[4] = {0, 0, 16, 16384};  size_t buffer_size = kBufferSize[buffer_op];  void* buffer = buffer_size > 0 ? (unsigned char *)malloc(buffer_size) : NULL;   unsigned char* part1 = (unsigned char *)malloc(len1);  unsigned char* part2 = (unsigned char *)malloc(len2);  unsigned char* part3 = (unsigned char *)malloc(len3);  memcpy(part1, data, len1);  data += len1;  memcpy(part2, data, len2);  data += len2;  memcpy(part3, data, len3);  data += len3;   NeAACDecHandle decoder = NeAACDecOpen();  ok = NeAACDecSetConfiguration(decoder, &config);  if (!ok) goto cleanup;  config_ptr = NeAACDecGetCurrentConfiguration(decoder);  if (!config_ptr) __builtin_trap();  if (use_init2) {    res = NeAACDecInit2(decoder, part1, len1, &sample_rate, &num_channels);  } else {    res = NeAACDecInit(decoder, part1, len1, &sample_rate, &num_channels);  }  if (use_drm) {#ifdef DRM_SUPPORT    NeAACDecInitDRM(&decoder, drm_channels, drm_sample_rate);#else    (void)drm_channels;    (void)drm_sample_rate;#endif  }   if (res != 0) goto cleanup;  NeAACDecFrameInfo faad_info;  if (seek_before) {    NeAACDecPostSeekReset(decoder, 0x1234567);  }  NeAACDecDecode(decoder, &faad_info, part2, len2);  if (seek_between) {    NeAACDecPostSeekReset(decoder, -0x1234567);  }  if (buffer_op == 0) {    NeAACDecDecode(decoder, &faad_info, part3, len3);  } else {    NeAACDecDecode2(decoder, &faad_info, part3, len3, &buffer, buffer_size);  } cleanup:  NeAACDecClose(decoder);  free(part1);  free(part2);  free(part3);  if (buffer) free(buffer);   return 0;}