kc3-lang/SDL/test/testresample.c

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• Hash : 0e45984f
  Author :
  Date : 2015-06-21T17:33:46
  

  Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().

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• test/testresample.c

• /*
    Copyright (C) 1997-2015 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely.
  */
  
  #include "SDL.h"
  
  int
  main(int argc, char **argv)
  {
      SDL_AudioSpec spec;
      SDL_AudioCVT cvt;
      Uint32 len = 0;
      Uint8 *data = NULL;
      int cvtfreq = 0;
      int bitsize = 0;
      int blockalign = 0;
      int avgbytes = 0;
      SDL_RWops *io = NULL;
  
  	/* Enable standard application logging */
      SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
  
      if (argc != 4) {
          SDL_Log("USAGE: %s in.wav out.wav newfreq\n", argv[0]);
          return 1;
      }
  
      cvtfreq = SDL_atoi(argv[3]);
  
      if (SDL_Init(SDL_INIT_AUDIO) == -1) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Init() failed: %s\n", SDL_GetError());
          return 2;
      }
  
      if (SDL_LoadWAV(argv[1], &spec, &data, &len) == NULL) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "failed to load %s: %s\n", argv[1], SDL_GetError());
          SDL_Quit();
          return 3;
      }
  
      if (SDL_BuildAudioCVT(&cvt, spec.format, spec.channels, spec.freq,
                            spec.format, spec.channels, cvtfreq) == -1) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "failed to build CVT: %s\n", SDL_GetError());
          SDL_FreeWAV(data);
          SDL_Quit();
          return 4;
      }
  
      cvt.len = len;
      cvt.buf = (Uint8 *) SDL_malloc(len * cvt.len_mult);
      if (cvt.buf == NULL) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory.\n");
          SDL_FreeWAV(data);
          SDL_Quit();
          return 5;
      }
      SDL_memcpy(cvt.buf, data, len);
  
      if (SDL_ConvertAudio(&cvt) == -1) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Conversion failed: %s\n", SDL_GetError());
          SDL_free(cvt.buf);
          SDL_FreeWAV(data);
          SDL_Quit();
          return 6;
      }
  
      /* write out a WAV header... */
      io = SDL_RWFromFile(argv[2], "wb");
      if (io == NULL) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "fopen('%s') failed: %s\n", argv[2], SDL_GetError());
          SDL_free(cvt.buf);
          SDL_FreeWAV(data);
          SDL_Quit();
          return 7;
      }
  
      bitsize = SDL_AUDIO_BITSIZE(spec.format);
      blockalign = (bitsize / 8) * spec.channels;
      avgbytes = cvtfreq * blockalign;
  
      SDL_WriteLE32(io, 0x46464952);      /* RIFF */
      SDL_WriteLE32(io, len * cvt.len_mult + 36);
      SDL_WriteLE32(io, 0x45564157);      /* WAVE */
      SDL_WriteLE32(io, 0x20746D66);      /* fmt */
      SDL_WriteLE32(io, 16);      /* chunk size */
      SDL_WriteLE16(io, 1);       /* uncompressed */
      SDL_WriteLE16(io, spec.channels);   /* channels */
      SDL_WriteLE32(io, cvtfreq); /* sample rate */
      SDL_WriteLE32(io, avgbytes);        /* average bytes per second */
      SDL_WriteLE16(io, blockalign);      /* block align */
      SDL_WriteLE16(io, bitsize); /* significant bits per sample */
      SDL_WriteLE32(io, 0x61746164);      /* data */
      SDL_WriteLE32(io, cvt.len_cvt);     /* size */
      SDL_RWwrite(io, cvt.buf, cvt.len_cvt, 1);
  
      if (SDL_RWclose(io) == -1) {
          SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "fclose('%s') failed: %s\n", argv[2], SDL_GetError());
          SDL_free(cvt.buf);
          SDL_FreeWAV(data);
          SDL_Quit();
          return 8;
      }                           /* if */
  
      SDL_free(cvt.buf);
      SDL_FreeWAV(data);
      SDL_Quit();
      return 0;
  }                               /* main */
  
  /* end of testresample.c ... */
  

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