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  1. // OGG vorbis for KolibriOS in native shared COFF library format.
  2.  
  3. // https://github.com/nothings/stb/blob/master/stb_vorbis.c
  4.  
  5. // Some functions to allow us building without any external libs
  6.  
  7. #include <stddef.h>
  8.  
  9. void* memset(void *base, int val, size_t len)
  10. {
  11.    int i;
  12.    for (i=0; i < len; ++i) ((char *) base)[i] = val;
  13. }
  14.  
  15. int memcmp(const void *p1, const void *p2, size_t len)
  16. {
  17.    unsigned char *q1 = (unsigned char *) p1;
  18.    unsigned char *q2 = (unsigned char *) p2;
  19.    int i;
  20.    for (i=0; i < len; ++i)
  21.       if (q1[i] < q2[i]) return -1;
  22.       else if (q1[i] > q2[i]) return 1;
  23.    return 0;
  24. }
  25.  
  26. void* memcpy(void *dest, const void *src, size_t num)
  27. {
  28.    int i;
  29.    for (i=0; i < num; ++i)
  30.       ((char *)dest)[i] = ((char *) src)[i];
  31. }
  32.  
  33. double powerd (double x, int y)
  34. {
  35.     double temp;
  36.     if (y == 0)
  37.     return 1;
  38.     temp = powerd (x, y / 2);
  39.     if ((y % 2) == 0) {
  40.         return temp * temp;
  41.     } else {
  42.         if (y > 0)
  43.             return x * temp * temp;
  44.         else
  45.             return (temp * temp) / x;
  46.     }
  47. }
  48.  
  49. double ldexp(double Value, int Exponent)
  50. {
  51.     return((Value * powerd(2.0, Exponent)));
  52. }
  53.  
  54. #include "qsort.c"
  55.  
  56. // For building with mingw compiler
  57. __attribute__((externally_visible)) void __chkstk_ms(){
  58.         return;
  59. }
  60.  
  61. # define assert(expr)                ((void) (0))
  62.  
  63. // Actual stb_vorbis related stuff starts here
  64.  
  65. #define STB_VORBIS_NO_STDIO 1
  66. #define STB_VORBIS_NO_CRT 1
  67. //#define STB_VORBIS_NO_PULLDATA_API 1
  68.  
  69. #include "stb_vorbis.c"
  70.  
  71. // KolibriOS type EXPORTS header
  72.  
  73. int __stdcall libInit(){
  74.       return 1;
  75. }
  76.  
  77. typedef struct{
  78.   char *name;
  79.   void *f;
  80. }export_t;
  81.  
  82. char szLibInit[]                        ="lib_init";
  83. char szVersion[]                        ="version";
  84. char szPushDataOpen[]           ="pushdata_open";
  85. char szPushDataDecode[]         ="pushdata_decode";
  86. char szPushDataFlush[]          ="pushdata_flush";
  87. //char szConvertSamplesShort[] = "convert_samples_short";
  88. char szConvertSamplesShortInterleaved[] = "convert_channels_short_interleaved";
  89.  
  90. __attribute__((externally_visible))  export_t EXPORTS[] __asm__("EXPORTS") =
  91.   {
  92.         { szLibInit,            libInit },
  93.         { szVersion,            (void*)0x00010001 },     
  94.     { szPushDataOpen,   stb_vorbis_open_pushdata },
  95.     { szPushDataDecode, stb_vorbis_decode_frame_pushdata },
  96.         { szPushDataFlush,      stb_vorbis_flush_pushdata},
  97.         //{ szConvertSamplesShort, convert_samples_short},
  98.         { szConvertSamplesShortInterleaved, convert_channels_short_interleaved},
  99.  
  100.     { NULL, NULL },
  101.   };
  102.  
  103. // End of file