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Implement decompression of FLAC compressed data blocks.

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This commit is contained in:
Natalia Portillo
2022-10-12 13:16:44 +01:00
parent 27b2bcf866
commit fbcaf63f0d
2 changed files with 45 additions and 7 deletions
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1
README.md
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@@ -15,7 +15,6 @@ Things still to be implemented that are already in the C# version:
- Writing
- Hashing while writing (requires MD5, SHA1 and SHA256)
- Deduplication (requires SHA256)
- Compression
Things to be implemented not in the C# version:
- Compile for Dreamcast (KallistiOS preferibly)

51
src/read.c
View File

@@ -147,14 +147,14 @@ int32_t aaruf_read_sector(void* context, uint64_t sectorAddress, uint8_t* data,
if(cmpData == NULL)
{
fprintf(stderr, "Cannot allocate memory for block, not continuing...\n");
fprintf(stderr, "Cannot allocate memory for block...\n");
return AARUF_ERROR_NOT_ENOUGH_MEMORY;
}
block = malloc(blockHeader->length);
if(block == NULL)
{
fprintf(stderr, "Cannot allocate memory for block, not continuing...\n");
fprintf(stderr, "Cannot allocate memory for block...\n");
free(cmpData);
return AARUF_ERROR_NOT_ENOUGH_MEMORY;
}
@@ -163,7 +163,7 @@ int32_t aaruf_read_sector(void* context, uint64_t sectorAddress, uint8_t* data,
if(readBytes != LZMA_PROPERTIES_LENGTH)
{
fprintf(stderr, "Could not read LZMA properties, not continuing...\n");
fprintf(stderr, "Could not read LZMA properties...\n");
free(block);
free(cmpData);
return AARUF_ERROR_CANNOT_DECOMPRESS_BLOCK;
@@ -172,7 +172,7 @@ int32_t aaruf_read_sector(void* context, uint64_t sectorAddress, uint8_t* data,
readBytes = fread(cmpData, 1, lzmaSize, ctx->imageStream);
if(readBytes != lzmaSize)
{
fprintf(stderr, "Could not read compressed block, continuing...\n");
fprintf(stderr, "Could not read compressed block...\n");
free(cmpData);
free(block);
break;
@@ -184,7 +184,7 @@ int32_t aaruf_read_sector(void* context, uint64_t sectorAddress, uint8_t* data,
if(errorNo != 0)
{
fprintf(stderr, "Got error %d from LZMA, continuing...\n", errorNo);
fprintf(stderr, "Got error %d from LZMA...\n", errorNo);
free(cmpData);
free(block);
return AARUF_ERROR_CANNOT_DECOMPRESS_BLOCK;
@@ -192,7 +192,46 @@ int32_t aaruf_read_sector(void* context, uint64_t sectorAddress, uint8_t* data,
if(readBytes != blockHeader->length)
{
fprintf(stderr, "Error decompressing block, should be {0} bytes but got {1} bytes., continuing...\n");
fprintf(stderr, "Error decompressing block, should be {0} bytes but got {1} bytes...\n");
free(cmpData);
free(block);
return AARUF_ERROR_CANNOT_DECOMPRESS_BLOCK;
}
free(cmpData);
break;
case Flac:
cmpData = malloc(blockHeader->cmpLength);
if(cmpData == NULL)
{
fprintf(stderr, "Cannot allocate memory for block...\n");
return AARUF_ERROR_NOT_ENOUGH_MEMORY;
}
block = malloc(blockHeader->length);
if(block == NULL)
{
fprintf(stderr, "Cannot allocate memory for block...\n");
free(cmpData);
return AARUF_ERROR_NOT_ENOUGH_MEMORY;
}
readBytes = fread(cmpData, 1, blockHeader->cmpLength, ctx->imageStream);
if(readBytes != blockHeader->cmpLength)
{
fprintf(stderr, "Could not read compressed block...\n");
free(cmpData);
free(block);
break;
}
readBytes = aaruf_flac_decode_redbook_buffer(block, blockHeader->length, cmpData, blockHeader->cmpLength);
if(readBytes != blockHeader->length)
{
fprintf(stderr, "Error decompressing block, should be {0} bytes but got {1} bytes...\n");
free(cmpData);
free(block);
return AARUF_ERROR_CANNOT_DECOMPRESS_BLOCK;