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42 lines
705 B
C
42 lines
705 B
C
#pragma once
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/**
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* @copyright 2018 Sean Kasun
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* Routines for reading multi-byte numbers from a stream
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*/
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#include <stdint.h>
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static inline uint32_t fourcc(const char *p) {
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return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
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}
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static inline uint16_t r16(uint8_t *p) {
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uint16_t r = *p++;
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r |= *p << 8;
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return r;
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}
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static inline uint32_t r24(uint8_t *p) {
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uint32_t r = *p++;
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r |= *p++ << 8;
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r |= *p << 16;
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return r;
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}
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static inline uint32_t r32(uint8_t *p) {
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uint32_t r = *p++;
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r |= *p++ << 8;
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r |= *p++ << 16;
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r |= *p << 24;
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return r;
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}
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static inline uint32_t r4(uint8_t *p) {
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uint32_t r = *p++ << 24;
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r |= *p++ << 16;
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r |= *p++ << 8;
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r |= *p;
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return r;
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}
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