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Add support for big-endian CPUs #14

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Add support for big-endian CPUs #14

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7 changes: 5 additions & 2 deletions TinyEXIF.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -95,6 +95,9 @@ namespace Tools {

namespace TinyEXIF {

uint32_t const _ONE32 = 1;
bool const IS_LITTLE_ENDIAN = (reinterpret_cast<uint8_t const*>(&_ONE32))[0] == 1;

enum JPEG_MARKERS {
JM_START = 0xFF,
JM_SOF0 = 0xC0,
Expand Down Expand Up @@ -945,10 +948,10 @@ int EXIFInfo::parseFromEXIFSegment(const uint8_t* buf, unsigned len) {
return PARSE_CORRUPT_DATA;
bool alignIntel;
if (buf[offs] == 'I' && buf[offs+1] == 'I')
alignIntel = true; // 1: Intel byte alignment
alignIntel = IS_LITTLE_ENDIAN; // 1: Intel byte alignment
else
if (buf[offs] == 'M' && buf[offs+1] == 'M')
alignIntel = false; // 0: Motorola byte alignment
alignIntel = !IS_LITTLE_ENDIAN; // 0: Motorola byte alignment
else
return PARSE_UNKNOWN_BYTEALIGN;
EntryParser parser(buf, len, offs, alignIntel);
Expand Down