diff options
Diffstat (limited to 'audio/softsynth/mt32/ROMInfo.cpp')
| -rw-r--r-- | audio/softsynth/mt32/ROMInfo.cpp | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/audio/softsynth/mt32/ROMInfo.cpp b/audio/softsynth/mt32/ROMInfo.cpp index 7c0127078b..8851817eeb 100644 --- a/audio/softsynth/mt32/ROMInfo.cpp +++ b/audio/softsynth/mt32/ROMInfo.cpp @@ -17,6 +17,7 @@ //#include <cstring> #include "ROMInfo.h" +#include "sha1/sha1.h" namespace MT32Emu { @@ -52,14 +53,27 @@ static const ROMInfo *getKnownROMInfoFromList(unsigned int index) { return ROM_INFOS[index]; } +static void getSHA1(Common::File *file, char *fileDigest) { + size_t fileSize = file->size(); + byte *data = new byte[fileSize]; + file->read(data, fileSize); + file->seek(0); + SHA1 sha1; + uint intDigest[5]; + sha1.Input((const char *)data, fileSize); + if (sha1.Result(intDigest)) + sprintf(fileDigest, "%08x%08x%08x%08x%08x", intDigest[0], intDigest[1], intDigest[2], intDigest[3], intDigest[4]); + delete[] data; +} + const ROMInfo* ROMInfo::getROMInfo(Common::File *file) { size_t fileSize = file->size(); - // We haven't added the SHA1 checksum code in ScummVM, as the file size - // suffices for our needs for now. - //const char *fileDigest = file->getSHA1(); + char fileDigest[41]; // Includes terminator char + getSHA1(file, fileDigest); + for (int i = 0; getKnownROMInfoFromList(i) != NULL; i++) { const ROMInfo *romInfo = getKnownROMInfoFromList(i); - if (fileSize == romInfo->fileSize /*&& !strcmp(fileDigest, romInfo->sha1Digest)*/) { + if (fileSize == romInfo->fileSize && !strcmp(fileDigest, romInfo->sha1Digest)) { return romInfo; } } |