static SRes Decode(ISeqOutStream *outStream, ISeqInStream *inStream)
{
UInt64 unpackSize;
int i;
SRes res = 0;
CLzmaDec state;
/* header: 5 bytes of LZMA properties and 8 bytes of uncompressed size */
unsigned char header[LZMA_PROPS_SIZE + 8];
/* Read and parse header */
RINOK(SeqInStream_Read(inStream, header, sizeof(header)));
unpackSize = 0;
for (i = 0; i < 8; i++)
unpackSize += (UInt64)header[LZMA_PROPS_SIZE + i] << (i * 8);
LzmaDec_Construct(&state);
RINOK(LzmaDec_Allocate(&state, header, LZMA_PROPS_SIZE, &g_Alloc));
res = Decode2(&state, outStream, inStream, unpackSize);
LzmaDec_Free(&state, &g_Alloc);
return res;
}
static SRes Decode(ISeqOutStream *outStream, ISeqInStream *inStream, Gate2<int64, int64> progress)
{
UInt64 unpackSize;
int i;
SRes res = 0;
CLzmaDec state;
/* header: 5 bytes of LZMA properties and 8 bytes of uncompressed size */
unsigned char header[LZMA_PROPS_SIZE + 8];
/* Read and parse header */
IUppInStream *is = (IUppInStream *)inStream;
if(is->in.Get(header, sizeof(header)) != sizeof(header))
return SZ_ERROR_READ;
unpackSize = 0;
for(i = 0; i < 8; i++)
unpackSize += (UInt64)header[LZMA_PROPS_SIZE + i] << (i * 8);
LzmaDec_Construct(&state);
RINOK(LzmaDec_Allocate(&state, header, LZMA_PROPS_SIZE, &g_Alloc));
res = Decode2(&state, outStream, inStream, unpackSize, progress);
LzmaDec_Free(&state, &g_Alloc);
return res;
}
/// Decode
///
/// Remark: pvSrc can be used to decrypt the first part
///
/// @param archive Archive
/// @param src Compressed data
/// @param src_size Compressed data size
///
bool CPB2A::Decode(CArcFile* archive, u8* src, size_t src_size)
{
// Decrypt
Decrypt(src, src_size);
// Get image information
const u16 type = *reinterpret_cast<u16*>(&src[16]);
const s32 width = *reinterpret_cast<u16*>(&src[18]);
const s32 height = *reinterpret_cast<u16*>(&src[20]);
const u16 bpp = *reinterpret_cast<u16*>(&src[22]);
// Decompression
switch (type)
{
case 1:
Decode1(archive, src, src_size, width, height, bpp);
break;
case 2:
Decode2(archive, src, src_size, width, height, bpp);
break;
case 3:
case 4:
Decode4(archive, src, src_size, width, height, bpp);
break;
case 5:
Decode5(archive, src, src_size, width, height, bpp);
break;
case 6:
Decode6(archive, src, src_size, width, height, bpp);
break;
default: // Unknown
archive->OpenFile();
archive->WriteFile(src, src_size);
break;
}
return true;
}
