mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-11-17 18:01:13 +00:00
105 lines
1.7 KiB
C
105 lines
1.7 KiB
C
#ifndef LIBXMP_MDATAIO_H
|
|
#define LIBXMP_MDATAIO_H
|
|
|
|
#include <stddef.h>
|
|
#include "common.h"
|
|
|
|
static inline ptrdiff_t CAN_READ(MFILE *m)
|
|
{
|
|
if (m->size >= 0)
|
|
return m->pos >= 0 ? m->size - m->pos : 0;
|
|
|
|
return INT_MAX;
|
|
}
|
|
|
|
static inline uint8 mread8(MFILE *m)
|
|
{
|
|
uint8 x = 0xff;
|
|
mread(&x, 1, 1, m);
|
|
return x;
|
|
}
|
|
|
|
static inline int8 mread8s(MFILE *m)
|
|
{
|
|
return (int8)mgetc(m);
|
|
}
|
|
|
|
static inline uint16 mread16l(MFILE *m)
|
|
{
|
|
ptrdiff_t can_read = CAN_READ(m);
|
|
if (can_read >= 2) {
|
|
uint16 n = readmem16l(m->start + m->pos);
|
|
m->pos += 2;
|
|
return n;
|
|
} else {
|
|
m->pos += can_read;
|
|
return EOF;
|
|
}
|
|
}
|
|
|
|
static inline uint16 mread16b(MFILE *m)
|
|
{
|
|
ptrdiff_t can_read = CAN_READ(m);
|
|
if (can_read >= 2) {
|
|
uint16 n = readmem16b(m->start + m->pos);
|
|
m->pos += 2;
|
|
return n;
|
|
} else {
|
|
m->pos += can_read;
|
|
return EOF;
|
|
}
|
|
}
|
|
|
|
static inline uint32 mread24l(MFILE *m)
|
|
{
|
|
ptrdiff_t can_read = CAN_READ(m);
|
|
if (can_read >= 3) {
|
|
uint32 n = readmem24l(m->start + m->pos);
|
|
m->pos += 3;
|
|
return n;
|
|
} else {
|
|
m->pos += can_read;
|
|
return EOF;
|
|
}
|
|
}
|
|
|
|
static inline uint32 mread24b(MFILE *m)
|
|
{
|
|
ptrdiff_t can_read = CAN_READ(m);
|
|
if (can_read >= 3) {
|
|
uint32 n = readmem24b(m->start + m->pos);
|
|
m->pos += 3;
|
|
return n;
|
|
} else {
|
|
m->pos += can_read;
|
|
return EOF;
|
|
}
|
|
}
|
|
|
|
static inline uint32 mread32l(MFILE *m)
|
|
{
|
|
ptrdiff_t can_read = CAN_READ(m);
|
|
if (can_read >= 4) {
|
|
uint32 n = readmem32l(m->start + m->pos);
|
|
m->pos += 4;
|
|
return n;
|
|
} else {
|
|
m->pos += can_read;
|
|
return EOF;
|
|
}
|
|
}
|
|
|
|
static inline uint32 mread32b(MFILE *m)
|
|
{
|
|
ptrdiff_t can_read = CAN_READ(m);
|
|
if (can_read >= 4) {
|
|
uint32 n = readmem32b(m->start + m->pos);
|
|
m->pos += 4;
|
|
return n;
|
|
} else {
|
|
m->pos += can_read;
|
|
return EOF;
|
|
}
|
|
}
|
|
|
|
#endif
|