aaru-dps/libaaruformat
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Split tracks block processing from open to a separate file.

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This commit is contained in:
Natalia Portillo
2025-08-02 16:17:57 +01:00
parent 7ed1002273
commit 793de582ca
4 changed files with 126 additions and 75 deletions
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76
src/open.c
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@@ -39,7 +39,7 @@ void *aaruf_open(const char *filepath)
long pos = 0;
uint8_t *data = NULL;
uint64_t crc64 = 0;
int i = 0, j = 0, k = 0;
int i = 0, j = 0;
uint16_t e = 0;
ChecksumHeader checksum_header;
ChecksumEntry const *checksum_entry = NULL;
@@ -233,79 +233,7 @@ void *aaruf_open(const char *filepath)
break;
case TracksBlock:
readBytes = fread(&ctx->tracksHeader, 1, sizeof(TracksHeader), ctx->imageStream);
if(readBytes != sizeof(TracksHeader))
{
memset(&ctx->tracksHeader, 0, sizeof(TracksHeader));
fprintf(stderr, "libaaruformat: Could not read tracks header, continuing...\n");
break;
}
if(ctx->tracksHeader.identifier != TracksBlock)
{
memset(&ctx->tracksHeader, 0, sizeof(TracksHeader));
fprintf(stderr, "libaaruformat: Incorrect identifier for data block at position %" PRIu64 "\n",
entry->offset);
}
ctx->imageInfo.ImageSize += sizeof(TrackEntry) * ctx->tracksHeader.entries;
ctx->trackEntries = (TrackEntry *)malloc(sizeof(TrackEntry) * ctx->tracksHeader.entries);
if(ctx->trackEntries == NULL)
{
memset(&ctx->tracksHeader, 0, sizeof(TracksHeader));
fprintf(stderr, "libaaruformat: Could not allocate memory for metadata block, continuing...\n");
break;
}
readBytes = fread(ctx->trackEntries, sizeof(TrackEntry), ctx->tracksHeader.entries, ctx->imageStream);
if(readBytes != ctx->tracksHeader.entries)
{
memset(&ctx->tracksHeader, 0, sizeof(TracksHeader));
free(ctx->trackEntries);
fprintf(stderr, "libaaruformat: Could not read metadata block, continuing...\n");
}
crc64 = aaruf_crc64_data((const uint8_t *)ctx->trackEntries,
ctx->tracksHeader.entries * sizeof(TrackEntry));
// Due to how C# wrote it, it is effectively reversed
if(ctx->header.imageMajorVersion <= AARUF_VERSION) crc64 = bswap_64(crc64);
if(crc64 != ctx->tracksHeader.crc64)
{
fprintf(stderr,
"libaaruformat: Incorrect CRC found: 0x%" PRIx64 " found, expected 0x%" PRIx64
", continuing...\n",
crc64, ctx->tracksHeader.crc64);
break;
}
fprintf(stderr, "libaaruformat: Found %d tracks at position %" PRIu64 ".\n", ctx->tracksHeader.entries,
entry->offset);
ctx->imageInfo.HasPartitions = true;
ctx->imageInfo.HasSessions = true;
ctx->numberOfDataTracks = 0;
for(j = 0; j < ctx->tracksHeader.entries; j++)
{
if(ctx->trackEntries[j].sequence > 0 && ctx->trackEntries[j].sequence <= 99)
ctx->numberOfDataTracks++;
}
ctx->dataTracks = malloc(sizeof(TrackEntry) * ctx->numberOfDataTracks);
k = 0;
for(j = 0; j < ctx->tracksHeader.entries; j++)
{
if(ctx->trackEntries[j].sequence > 0 && ctx->trackEntries[j].sequence <= 99)
memcpy(&ctx->dataTracks[k++], &ctx->trackEntries[j], sizeof(TrackEntry));
}
process_tracks_block(ctx, entry);
break;
// CICM XML metadata block