kolibrios/contrib/media/stb_vorbis/libvorbis.c
hidnplayr 22c37f1c0b STB_Vorbis - OGG Vorbis decoder
git-svn-id: svn://kolibrios.org@8039 a494cfbc-eb01-0410-851d-a64ba20cac60
2020-06-14 14:17:48 +00:00

103 lines
2.4 KiB
C

// OGG vorbis for KolibriOS in native shared COFF library format.
// https://github.com/nothings/stb/blob/master/stb_vorbis.c
// Some functions to allow us building without any external libs
#include <stddef.h>
void* memset(void *base, int val, size_t len)
{
int i;
for (i=0; i < len; ++i) ((char *) base)[i] = val;
}
int memcmp(const void *p1, const void *p2, size_t len)
{
unsigned char *q1 = (unsigned char *) p1;
unsigned char *q2 = (unsigned char *) p2;
int i;
for (i=0; i < len; ++i)
if (q1[i] < q2[i]) return -1;
else if (q1[i] > q2[i]) return 1;
return 0;
}
void* memcpy(void *dest, const void *src, size_t num)
{
int i;
for (i=0; i < num; ++i)
((char *)dest)[i] = ((char *) src)[i];
}
double powerd (double x, int y)
{
double temp;
if (y == 0)
return 1;
temp = powerd (x, y / 2);
if ((y % 2) == 0) {
return temp * temp;
} else {
if (y > 0)
return x * temp * temp;
else
return (temp * temp) / x;
}
}
double ldexp(double Value, int Exponent)
{
return((Value * powerd(2.0, Exponent)));
}
#include "qsort.c"
// For building with mingw compiler
__attribute__((externally_visible)) void __chkstk_ms(){
return;
}
# define assert(expr) ((void) (0))
// Actual stb_vorbis related stuff starts here
#define STB_VORBIS_NO_STDIO 1
#define STB_VORBIS_NO_CRT 1
//#define STB_VORBIS_NO_PULLDATA_API 1
#include "stb_vorbis.c"
// KolibriOS type EXPORTS header
int __stdcall libInit(){
return 1;
}
typedef struct{
char *name;
void *f;
}export_t;
char szLibInit[] ="lib_init";
char szVersion[] ="version";
char szPushDataOpen[] ="pushdata_open";
char szPushDataDecode[] ="pushdata_decode";
char szPushDataFlush[] ="pushdata_flush";
//char szConvertSamplesShort[] = "convert_samples_short";
char szConvertSamplesShortInterleaved[] = "convert_channels_short_interleaved";
__attribute__((externally_visible)) export_t EXPORTS[] __asm__("EXPORTS") =
{
{ szLibInit, libInit },
{ szVersion, (void*)0x00010001 },
{ szPushDataOpen, stb_vorbis_open_pushdata },
{ szPushDataDecode, stb_vorbis_decode_frame_pushdata },
{ szPushDataFlush, stb_vorbis_flush_pushdata},
//{ szConvertSamplesShort, convert_samples_short},
{ szConvertSamplesShortInterleaved, convert_channels_short_interleaved},
{ NULL, NULL },
};
// End of file