/** ZSTD_compressSubBlock() :
* Compresses a single sub-block.
* @return : compressed size of the sub-block
* Or 0 if it failed to compress. */
private static nuint ZSTD_compressSubBlock(ZSTD_entropyCTables_t *entropy, ZSTD_entropyCTablesMetadata_t *entropyMetadata, seqDef_s *sequences, nuint nbSeq, byte *literals, nuint litSize, byte *llCode, byte *mlCode, byte *ofCode, ZSTD_CCtx_params_s *cctxParams, void *dst, nuint dstCapacity, int bmi2, int writeLitEntropy, int writeSeqEntropy, int *litEntropyWritten, int *seqEntropyWritten, uint lastBlock)
{
byte *ostart = (byte *)(dst);
byte *oend = ostart + dstCapacity;
byte *op = ostart + ZSTD_blockHeaderSize;
{
nuint cLitSize = ZSTD_compressSubBlock_literal((HUF_CElt_s *)(entropy->huf.CTable), &entropyMetadata->hufMetadata, literals, litSize, (void *)op, (nuint)(oend - op), bmi2, writeLitEntropy, litEntropyWritten);
{
nuint err_code = (cLitSize);
if ((ERR_isError(err_code)) != 0)
{
return(err_code);
}
}
if (cLitSize == 0)
{
return(0);
}
op += cLitSize;
}
{
nuint cSeqSize = ZSTD_compressSubBlock_sequences(&entropy->fse, &entropyMetadata->fseMetadata, sequences, nbSeq, llCode, mlCode, ofCode, cctxParams, (void *)op, (nuint)(oend - op), bmi2, writeSeqEntropy, seqEntropyWritten);
{
nuint err_code = (cSeqSize);
if ((ERR_isError(err_code)) != 0)
{
return(err_code);
}
}
if (cSeqSize == 0)
{
return(0);
}
op += cSeqSize;
}
{
nuint cSize = (nuint)((ulong)((op - ostart)) - ZSTD_blockHeaderSize);
uint cBlockHeader24 = lastBlock + (((uint)(blockType_e.bt_compressed)) << 1) + (uint)(cSize << 3);
MEM_writeLE24((void *)ostart, cBlockHeader24);
}
return((nuint)(op - ostart));
}
/** ZSTD_buildSuperBlockEntropy() :
* Builds entropy for the super-block.
* @return : 0 on success or error code */
private static nuint ZSTD_buildSuperBlockEntropy(seqStore_t *seqStorePtr, ZSTD_entropyCTables_t *prevEntropy, ZSTD_entropyCTables_t *nextEntropy, ZSTD_CCtx_params_s *cctxParams, ZSTD_entropyCTablesMetadata_t *entropyMetadata, void *workspace, nuint wkspSize)
{
nuint litSize = (nuint)(seqStorePtr->lit - seqStorePtr->litStart);
entropyMetadata->hufMetadata.hufDesSize = ZSTD_buildSuperBlockEntropy_literal((void *)seqStorePtr->litStart, litSize, &prevEntropy->huf, &nextEntropy->huf, &entropyMetadata->hufMetadata, ZSTD_disableLiteralsCompression(cctxParams), workspace, wkspSize);
{
nuint err_code = (entropyMetadata->hufMetadata.hufDesSize);
if ((ERR_isError(err_code)) != 0)
{
return(err_code);
}
}
entropyMetadata->fseMetadata.fseTablesSize = ZSTD_buildSuperBlockEntropy_sequences(seqStorePtr, &prevEntropy->fse, &nextEntropy->fse, cctxParams, &entropyMetadata->fseMetadata, workspace, wkspSize);
{
nuint err_code = (entropyMetadata->fseMetadata.fseTablesSize);
if ((ERR_isError(err_code)) != 0)
{
return(err_code);
}
}
return(0);
}
private static nuint ZSTD_estimateSubBlockSize(byte *literals, nuint litSize, byte *ofCodeTable, byte *llCodeTable, byte *mlCodeTable, nuint nbSeq, ZSTD_entropyCTables_t *entropy, ZSTD_entropyCTablesMetadata_t *entropyMetadata, void *workspace, nuint wkspSize, int writeLitEntropy, int writeSeqEntropy)
{
nuint cSizeEstimate = 0;
cSizeEstimate += ZSTD_estimateSubBlockSize_literal(literals, litSize, &entropy->huf, &entropyMetadata->hufMetadata, workspace, wkspSize, writeLitEntropy);
cSizeEstimate += ZSTD_estimateSubBlockSize_sequences(ofCodeTable, llCodeTable, mlCodeTable, nbSeq, &entropy->fse, &entropyMetadata->fseMetadata, workspace, wkspSize, writeSeqEntropy);
return(cSizeEstimate + ZSTD_blockHeaderSize);
}
