kolibrios/contrib/media/dr_flac/dr_flac.c

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// FLAC decoder for KolibriOS in native shared COFF library format.
// https://github.com/mackron/dr_libs/blob/master/dr_flac.h
// 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];
}
// For building with mingw compiler
__attribute__((externally_visible)) void __chkstk_ms(){
return;
}
void* malloc(size_t size) {
asm("int3");
return 0;
}
void* realloc(void *ptr, size_t size) {
asm("int3");
return 0;
}
void free(void *ptr) {
asm("int3");
return;
}
#define DRFLAC_ASSERT(expr) ((void) (0))
#define DRFLAC_MALLOC(sz) malloc((sz))
#define DRFLAC_REALLOC(p, sz) realloc((p), (sz))
#define DRFLAC_FREE(p) free((p))
// Actual dr_flac related stuff starts here
#define DRFLAC_IMPLEMENTATION
#define DR_FLAC_NO_STDIO
//#define DR_FLAC_NO_OGG
//#define DR_FLAC_BUFFER_SIZE 4096
//#define DR_FLAC_NO_CRC
#define DR_FLAC_NO_SIMD
#include "dr_flac.h"
// 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 szClose[] ="close";
char szOpen[] ="open";
char szOpenRelaxed[] ="open_relaxed";
char szReadPCMS16[] ="read_pcm_frames_s16";
__attribute__((externally_visible)) export_t EXPORTS[] __asm__("EXPORTS") =
{
{ szLibInit, libInit },
{ szVersion, (void*)0x00010001 },
{ szClose, drflac_close },
{ szOpen, drflac_open },
{ szOpenRelaxed, drflac_open_relaxed },
{ szReadPCMS16, drflac_read_pcm_frames_s16},
{ NULL, NULL },
};
// End of file