WIA/RVZ: Move (de)compression to a different file

1 files changed, 1 insertions, 773 deletions

diff --git a/Source/Core/DiscIO/WIABlob.cpp b/Source/Core/DiscIO/WIABlob.cpp
index 8bf207f1cd..48731d69c1 100644
--- a/Source/Core/DiscIO/WIABlob.cpp
+++ b/Source/Core/DiscIO/WIABlob.cpp
@@ -16,8 +16,6 @@
 #include <type_traits>
 #include <utility>
 
-#include <bzlib.h>
-#include <lzma.h>
 #include <mbedtls/sha1.h>
 #include <zstd.h>
 
@@ -39,6 +37,7 @@
 #include "DiscIO/MultithreadedCompressor.h"
 #include "DiscIO/Volume.h"
 #include "DiscIO/VolumeWii.h"
+#include "DiscIO/WIACompression.h"
 #include "DiscIO/WiiEncryptionCache.h"
 
 namespace DiscIO
@@ -526,777 +525,6 @@ std::string WIAFileReader::VersionToString(u32 version)
     return StringFromFormat("%u.%02x.%02x.beta%u", a, b, c, d);
 }
 
-u32 WIAFileReader::LZMA2DictionarySize(u8 p)
-{
-  return (static_cast<u32>(2) | (p & 1)) << (p / 2 + 11);
-}
-
-WIAFileReader::Decompressor::~Decompressor() = default;
-
-bool WIAFileReader::NoneDecompressor::Decompress(const DecompressionBuffer& in,
-                                                 DecompressionBuffer* out, size_t* in_bytes_read)
-{
-  const size_t length =
-      std::min(in.bytes_written - *in_bytes_read, out->data.size() - out->bytes_written);
-
-  std::memcpy(out->data.data() + out->bytes_written, in.data.data() + *in_bytes_read, length);
-
-  *in_bytes_read += length;
-  out->bytes_written += length;
-
-  m_done = in.data.size() == *in_bytes_read;
-  return true;
-}
-
-WIAFileReader::PurgeDecompressor::PurgeDecompressor(u64 decompressed_size)
-    : m_decompressed_size(decompressed_size)
-{
-  mbedtls_sha1_init(&m_sha1_context);
-}
-
-bool WIAFileReader::PurgeDecompressor::Decompress(const DecompressionBuffer& in,
-                                                  DecompressionBuffer* out, size_t* in_bytes_read)
-{
-  if (!m_started)
-  {
-    mbedtls_sha1_starts_ret(&m_sha1_context);
-
-    // Include the exception lists in the SHA-1 calculation (but not in the compression...)
-    mbedtls_sha1_update_ret(&m_sha1_context, in.data.data(), *in_bytes_read);
-
-    m_started = true;
-  }
-
-  while (!m_done && in.bytes_written != *in_bytes_read &&
-         (m_segment_bytes_written < sizeof(m_segment) || out->data.size() != out->bytes_written))
-  {
-    if (m_segment_bytes_written == 0 && *in_bytes_read == in.data.size() - sizeof(SHA1))
-    {
-      const size_t zeroes_to_write = std::min<size_t>(m_decompressed_size - m_out_bytes_written,
-                                                      out->data.size() - out->bytes_written);
-
-      std::memset(out->data.data() + out->bytes_written, 0, zeroes_to_write);
-
-      out->bytes_written += zeroes_to_write;
-      m_out_bytes_written += zeroes_to_write;
-
-      if (m_out_bytes_written == m_decompressed_size && in.bytes_written == in.data.size())
-      {
-        SHA1 actual_hash;
-        mbedtls_sha1_finish_ret(&m_sha1_context, actual_hash.data());
-
-        SHA1 expected_hash;
-        std::memcpy(expected_hash.data(), in.data.data() + *in_bytes_read, expected_hash.size());
-
-        *in_bytes_read += expected_hash.size();
-        m_done = true;
-
-        if (actual_hash != expected_hash)
-          return false;
-      }
-
-      return true;
-    }
-
-    if (m_segment_bytes_written < sizeof(m_segment))
-    {
-      const size_t bytes_to_copy =
-          std::min(in.bytes_written - *in_bytes_read, sizeof(m_segment) - m_segment_bytes_written);
-
-      std::memcpy(reinterpret_cast<u8*>(&m_segment) + m_segment_bytes_written,
-                  in.data.data() + *in_bytes_read, bytes_to_copy);
-      mbedtls_sha1_update_ret(&m_sha1_context, in.data.data() + *in_bytes_read, bytes_to_copy);
-
-      *in_bytes_read += bytes_to_copy;
-      m_bytes_read += bytes_to_copy;
-      m_segment_bytes_written += bytes_to_copy;
-    }
-
-    if (m_segment_bytes_written < sizeof(m_segment))
-      return true;
-
-    const size_t offset = Common::swap32(m_segment.offset);
-    const size_t size = Common::swap32(m_segment.size);
-
-    if (m_out_bytes_written < offset)
-    {
-      const size_t zeroes_to_write =
-          std::min(offset - m_out_bytes_written, out->data.size() - out->bytes_written);
-
-      std::memset(out->data.data() + out->bytes_written, 0, zeroes_to_write);
-
-      out->bytes_written += zeroes_to_write;
-      m_out_bytes_written += zeroes_to_write;
-    }
-
-    if (m_out_bytes_written >= offset && m_out_bytes_written < offset + size)
-    {
-      const size_t bytes_to_copy = std::min(
-          std::min(offset + size - m_out_bytes_written, out->data.size() - out->bytes_written),
-          in.bytes_written - *in_bytes_read);
-
-      std::memcpy(out->data.data() + out->bytes_written, in.data.data() + *in_bytes_read,
-                  bytes_to_copy);
-      mbedtls_sha1_update_ret(&m_sha1_context, in.data.data() + *in_bytes_read, bytes_to_copy);
-
-      *in_bytes_read += bytes_to_copy;
-      m_bytes_read += bytes_to_copy;
-      out->bytes_written += bytes_to_copy;
-      m_out_bytes_written += bytes_to_copy;
-    }
-
-    if (m_out_bytes_written >= offset + size)
-      m_segment_bytes_written = 0;
-  }
-
-  return true;
-}
-
-WIAFileReader::Bzip2Decompressor::~Bzip2Decompressor()
-{
-  if (m_started)
-    BZ2_bzDecompressEnd(&m_stream);
-}
-
-bool WIAFileReader::Bzip2Decompressor::Decompress(const DecompressionBuffer& in,
-                                                  DecompressionBuffer* out, size_t* in_bytes_read)
-{
-  if (!m_started)
-  {
-    if (BZ2_bzDecompressInit(&m_stream, 0, 0) != BZ_OK)
-      return false;
-
-    m_started = true;
-  }
-
-  constexpr auto clamped_cast = [](size_t x) {
-    return static_cast<unsigned int>(
-        std::min<size_t>(std::numeric_limits<unsigned int>().max(), x));
-  };
-
-  char* const in_ptr = reinterpret_cast<char*>(const_cast<u8*>(in.data.data() + *in_bytes_read));
-  m_stream.next_in = in_ptr;
-  m_stream.avail_in = clamped_cast(in.bytes_written - *in_bytes_read);
-
-  char* const out_ptr = reinterpret_cast<char*>(out->data.data() + out->bytes_written);
-  m_stream.next_out = out_ptr;
-  m_stream.avail_out = clamped_cast(out->data.size() - out->bytes_written);
-
-  const int result = BZ2_bzDecompress(&m_stream);
-
-  *in_bytes_read += m_stream.next_in - in_ptr;
-  out->bytes_written += m_stream.next_out - out_ptr;
-
-  m_done = result == BZ_STREAM_END;
-  return result == BZ_OK || result == BZ_STREAM_END;
-}
-
-WIAFileReader::LZMADecompressor::LZMADecompressor(bool lzma2, const u8* filter_options,
-                                                  size_t filter_options_size)
-{
-  m_options.preset_dict = nullptr;
-
-  if (!lzma2 && filter_options_size == 5)
-  {
-    // The dictionary size is stored as a 32-bit little endian unsigned integer
-    static_assert(sizeof(m_options.dict_size) == sizeof(u32));
-    std::memcpy(&m_options.dict_size, filter_options + 1, sizeof(u32));
-
-    const u8 d = filter_options[0];
-    if (d >= (9 * 5 * 5))
-    {
-      m_error_occurred = true;
-    }
-    else
-    {
-      m_options.lc = d % 9;
-      const u8 e = d / 9;
-      m_options.pb = e / 5;
-      m_options.lp = e % 5;
-    }
-  }
-  else if (lzma2 && filter_options_size == 1)
-  {
-    const u8 d = filter_options[0];
-    if (d > 40)
-      m_error_occurred = true;
-    else
-      m_options.dict_size = d == 40 ? 0xFFFFFFFF : LZMA2DictionarySize(d);
-  }
-  else
-  {
-    m_error_occurred = true;
-  }
-
-  m_filters[0].id = lzma2 ? LZMA_FILTER_LZMA2 : LZMA_FILTER_LZMA1;
-  m_filters[0].options = &m_options;
-  m_filters[1].id = LZMA_VLI_UNKNOWN;
-  m_filters[1].options = nullptr;
-}
-
-WIAFileReader::LZMADecompressor::~LZMADecompressor()
-{
-  if (m_started)
-    lzma_end(&m_stream);
-}
-
-bool WIAFileReader::LZMADecompressor::Decompress(const DecompressionBuffer& in,
-                                                 DecompressionBuffer* out, size_t* in_bytes_read)
-{
-  if (!m_started)
-  {
-    if (m_error_occurred || lzma_raw_decoder(&m_stream, m_filters) != LZMA_OK)
-      return false;
-
-    m_started = true;
-  }
-
-  const u8* const in_ptr = in.data.data() + *in_bytes_read;
-  m_stream.next_in = in_ptr;
-  m_stream.avail_in = in.bytes_written - *in_bytes_read;
-
-  u8* const out_ptr = out->data.data() + out->bytes_written;
-  m_stream.next_out = out_ptr;
-  m_stream.avail_out = out->data.size() - out->bytes_written;
-
-  const lzma_ret result = lzma_code(&m_stream, LZMA_RUN);
-
-  *in_bytes_read += m_stream.next_in - in_ptr;
-  out->bytes_written += m_stream.next_out - out_ptr;
-
-  m_done = result == LZMA_STREAM_END;
-  return result == LZMA_OK || result == LZMA_STREAM_END;
-}
-
-WIAFileReader::ZstdDecompressor::ZstdDecompressor()
-{
-  m_stream = ZSTD_createDStream();
-}
-
-WIAFileReader::ZstdDecompressor::~ZstdDecompressor()
-{
-  ZSTD_freeDStream(m_stream);
-}
-
-bool WIAFileReader::ZstdDecompressor::Decompress(const DecompressionBuffer& in,
-                                                 DecompressionBuffer* out, size_t* in_bytes_read)
-{
-  if (!m_stream)
-    return false;
-
-  ZSTD_inBuffer in_buffer{in.data.data(), in.bytes_written, *in_bytes_read};
-  ZSTD_outBuffer out_buffer{out->data.data(), out->data.size(), out->bytes_written};
-
-  const size_t result = ZSTD_decompressStream(m_stream, &out_buffer, &in_buffer);
-
-  *in_bytes_read = in_buffer.pos;
-  out->bytes_written = out_buffer.pos;
-
-  m_done = result == 0;
-  return !ZSTD_isError(result);
-}
-
-WIAFileReader::RVZPackDecompressor::RVZPackDecompressor(std::unique_ptr<Decompressor> decompressor,
-                                                        DecompressionBuffer decompressed,
-                                                        u64 data_offset)
-    : m_decompressor(std::move(decompressor)), m_decompressed(std::move(decompressed)),
-      m_data_offset(data_offset)
-{
-}
-
-std::optional<bool> WIAFileReader::RVZPackDecompressor::ReadToDecompressed(
-    const DecompressionBuffer& in, size_t* in_bytes_read, size_t decompressed_bytes_read,
-    size_t bytes_to_read)
-{
-  if (m_decompressed.data.size() < decompressed_bytes_read + bytes_to_read)
-    m_decompressed.data.resize(decompressed_bytes_read + bytes_to_read);
-
-  if (m_decompressed.bytes_written < decompressed_bytes_read + bytes_to_read)
-  {
-    if (!m_decompressor->Decompress(in, &m_decompressed, in_bytes_read))
-      return false;
-
-    if (m_decompressed.bytes_written < decompressed_bytes_read + bytes_to_read)
-      return true;
-  }
-
-  return std::nullopt;
-}
-
-bool WIAFileReader::RVZPackDecompressor::Decompress(const DecompressionBuffer& in,
-                                                    DecompressionBuffer* out, size_t* in_bytes_read)
-{
-  while (out->data.size() != out->bytes_written && !Done())
-  {
-    if (m_size == 0)
-    {
-      if (m_decompressed.bytes_written == m_decompressed_bytes_read)
-      {
-        m_decompressed.data.resize(sizeof(u32));
-        m_decompressed.bytes_written = 0;
-        m_decompressed_bytes_read = 0;
-      }
-
-      std::optional<bool> result =
-          ReadToDecompressed(in, in_bytes_read, m_decompressed_bytes_read, sizeof(u32));
-      if (result)
-        return *result;
-
-      m_size = Common::swap32(m_decompressed.data.data() + m_decompressed_bytes_read);
-
-      m_junk = m_size & 0x80000000;
-      if (m_junk)
-      {
-        m_size &= 0x7FFFFFFF;
-
-        constexpr size_t SEED_SIZE = LaggedFibonacciGenerator::SEED_SIZE * sizeof(u32);
-
-        result = ReadToDecompressed(in, in_bytes_read, m_decompressed_bytes_read + sizeof(u32),
-                                    SEED_SIZE);
-        if (result)
-          return *result;
-
-        m_lfg.SetSeed(m_decompressed.data.data() + m_decompressed_bytes_read + sizeof(u32));
-        m_lfg.Forward(m_data_offset % VolumeWii::BLOCK_TOTAL_SIZE);
-
-        m_decompressed_bytes_read += SEED_SIZE;
-      }
-
-      m_decompressed_bytes_read += sizeof(u32);
-    }
-
-    size_t bytes_to_write = std::min<size_t>(m_size, out->data.size() - out->bytes_written);
-    if (m_junk)
-    {
-      m_lfg.GetBytes(bytes_to_write, out->data.data() + out->bytes_written);
-      out->bytes_written += bytes_to_write;
-    }
-    else
-    {
-      if (m_decompressed.bytes_written != m_decompressed_bytes_read)
-      {
-        bytes_to_write =
-            std::min(bytes_to_write, m_decompressed.bytes_written - m_decompressed_bytes_read);
-
-        std::memcpy(out->data.data() + out->bytes_written,
-                    m_decompressed.data.data() + m_decompressed_bytes_read, bytes_to_write);
-
-        m_decompressed_bytes_read += bytes_to_write;
-        out->bytes_written += bytes_to_write;
-      }
-      else
-      {
-        const size_t prev_out_bytes_written = out->bytes_written;
-        const size_t old_out_size = out->data.size();
-        const size_t new_out_size = out->bytes_written + bytes_to_write;
-
-        if (new_out_size < old_out_size)
-          out->data.resize(new_out_size);
-
-        if (!m_decompressor->Decompress(in, out, in_bytes_read))
-          return false;
-
-        out->data.resize(old_out_size);
-
-        bytes_to_write = out->bytes_written - prev_out_bytes_written;
-        if (bytes_to_write == 0)
-          return true;
-      }
-    }
-
-    m_data_offset += bytes_to_write;
-    m_size -= static_cast<u32>(bytes_to_write);
-  }
-
-  // If out is full but not all data has been read from in, give the decompressor a chance to read
-  // from in anyway. This is needed for the case where zstd has read everything except the checksum.
-  if (out->data.size() == out->bytes_written && in.bytes_written != *in_bytes_read)
-  {
-    if (!m_decompressor->Decompress(in, out, in_bytes_read))
-      return false;
-  }
-
-  return true;
-}
-
-bool WIAFileReader::RVZPackDecompressor::Done() const
-{
-  return m_size == 0 && m_decompressed.bytes_written == m_decompressed_bytes_read &&
-         m_decompressor->Done();
-}
-
-WIAFileReader::Compressor::~Compressor() = default;
-
-WIAFileReader::PurgeCompressor::PurgeCompressor()
-{
-  mbedtls_sha1_init(&m_sha1_context);
-}
-
-WIAFileReader::PurgeCompressor::~PurgeCompressor() = default;
-
-bool WIAFileReader::PurgeCompressor::Start()
-{
-  m_buffer.clear();
-  m_bytes_written = 0;
-
-  mbedtls_sha1_starts_ret(&m_sha1_context);
-
-  return true;
-}
-
-bool WIAFileReader::PurgeCompressor::AddPrecedingDataOnlyForPurgeHashing(const u8* data,
-                                                                         size_t size)
-{
-  mbedtls_sha1_update_ret(&m_sha1_context, data, size);
-  return true;
-}
-
-bool WIAFileReader::PurgeCompressor::Compress(const u8* data, size_t size)
-{
-  // We could add support for calling this twice if we're fine with
-  // making the code more complicated, but there's no need to support it
-  ASSERT_MSG(DISCIO, m_bytes_written == 0,
-             "Calling PurgeCompressor::Compress() twice is not supported");
-
-  m_buffer.resize(size + sizeof(PurgeSegment) + sizeof(SHA1));
-
-  size_t bytes_read = 0;
-
-  while (true)
-  {
-    const auto first_non_zero =
-        std::find_if(data + bytes_read, data + size, [](u8 x) { return x != 0; });
-
-    const u32 non_zero_data_start = static_cast<u32>(first_non_zero - data);
-    if (non_zero_data_start == size)
-      break;
-
-    size_t non_zero_data_end = non_zero_data_start;
-    size_t sequence_length = 0;
-    for (size_t i = non_zero_data_start; i < size; ++i)
-    {
-      if (data[i] == 0)
-      {
-        ++sequence_length;
-      }
-      else
-      {
-        sequence_length = 0;
-        non_zero_data_end = i + 1;
-      }
-
-      // To avoid wasting space, only count runs of zeroes that are of a certain length
-      // (unless there is nothing after the run of zeroes, then we might as well always count it)
-      if (sequence_length > sizeof(PurgeSegment))
-        break;
-    }
-
-    const u32 non_zero_data_length = static_cast<u32>(non_zero_data_end - non_zero_data_start);
-
-    const PurgeSegment segment{Common::swap32(non_zero_data_start),
-                               Common::swap32(non_zero_data_length)};
-    std::memcpy(m_buffer.data() + m_bytes_written, &segment, sizeof(segment));
-    m_bytes_written += sizeof(segment);
-
-    std::memcpy(m_buffer.data() + m_bytes_written, data + non_zero_data_start,
-                non_zero_data_length);
-    m_bytes_written += non_zero_data_length;
-
-    bytes_read = non_zero_data_end;
-  }
-
-  return true;
-}
-
-bool WIAFileReader::PurgeCompressor::End()
-{
-  mbedtls_sha1_update_ret(&m_sha1_context, m_buffer.data(), m_bytes_written);
-
-  mbedtls_sha1_finish_ret(&m_sha1_context, m_buffer.data() + m_bytes_written);
-  m_bytes_written += sizeof(SHA1);
-
-  ASSERT(m_bytes_written <= m_buffer.size());
-
-  return true;
-}
-
-const u8* WIAFileReader::PurgeCompressor::GetData() const
-{
-  return m_buffer.data();
-}
-
-size_t WIAFileReader::PurgeCompressor::GetSize() const
-{
-  return m_bytes_written;
-}
-
-WIAFileReader::Bzip2Compressor::Bzip2Compressor(int compression_level)
-    : m_compression_level(compression_level)
-{
-}
-
-WIAFileReader::Bzip2Compressor::~Bzip2Compressor()
-{
-  BZ2_bzCompressEnd(&m_stream);
-}
-
-bool WIAFileReader::Bzip2Compressor::Start()
-{
-  ASSERT_MSG(DISCIO, m_stream.state == nullptr,
-             "Called Bzip2Compressor::Start() twice without calling Bzip2Compressor::End()");
-
-  m_buffer.clear();
-  m_stream.next_out = reinterpret_cast<char*>(m_buffer.data());
-
-  return BZ2_bzCompressInit(&m_stream, m_compression_level, 0, 0) == BZ_OK;
-}
-
-bool WIAFileReader::Bzip2Compressor::Compress(const u8* data, size_t size)
-{
-  m_stream.next_in = reinterpret_cast<char*>(const_cast<u8*>(data));
-  m_stream.avail_in = static_cast<unsigned int>(size);
-
-  ExpandBuffer(size);
-
-  while (m_stream.avail_in != 0)
-  {
-    if (m_stream.avail_out == 0)
-      ExpandBuffer(0x100);
-
-    if (BZ2_bzCompress(&m_stream, BZ_RUN) != BZ_RUN_OK)
-      return false;
-  }
-
-  return true;
-}
-
-bool WIAFileReader::Bzip2Compressor::End()
-{
-  bool success = true;
-
-  while (true)
-  {
-    if (m_stream.avail_out == 0)
-      ExpandBuffer(0x100);
-
-    const int result = BZ2_bzCompress(&m_stream, BZ_FINISH);
-    if (result != BZ_FINISH_OK && result != BZ_STREAM_END)
-      success = false;
-    if (result != BZ_FINISH_OK)
-      break;
-  }
-
-  if (BZ2_bzCompressEnd(&m_stream) != BZ_OK)
-    success = false;
-
-  return success;
-}
-
-void WIAFileReader::Bzip2Compressor::ExpandBuffer(size_t bytes_to_add)
-{
-  const size_t bytes_written = GetSize();
-  m_buffer.resize(m_buffer.size() + bytes_to_add);
-  m_stream.next_out = reinterpret_cast<char*>(m_buffer.data()) + bytes_written;
-  m_stream.avail_out = static_cast<unsigned int>(m_buffer.size() - bytes_written);
-}
-
-const u8* WIAFileReader::Bzip2Compressor::GetData() const
-{
-  return m_buffer.data();
-}
-
-size_t WIAFileReader::Bzip2Compressor::GetSize() const
-{
-  return static_cast<size_t>(reinterpret_cast<u8*>(m_stream.next_out) - m_buffer.data());
-}
-
-WIAFileReader::LZMACompressor::LZMACompressor(bool lzma2, int compression_level,
-                                              u8 compressor_data_out[7],
-                                              u8* compressor_data_size_out)
-{
-  // lzma_lzma_preset returns false on success for some reason
-  if (lzma_lzma_preset(&m_options, static_cast<uint32_t>(compression_level)))
-  {
-    m_initialization_failed = true;
-    return;
-  }
-
-  if (!lzma2)
-  {
-    if (compressor_data_size_out)
-      *compressor_data_size_out = 5;
-
-    if (compressor_data_out)
-    {
-      ASSERT(m_options.lc < 9);
-      ASSERT(m_options.lp < 5);
-      ASSERT(m_options.pb < 5);
-      compressor_data_out[0] =
-          static_cast<u8>((m_options.pb * 5 + m_options.lp) * 9 + m_options.lc);
-
-      // The dictionary size is stored as a 32-bit little endian unsigned integer
-      static_assert(sizeof(m_options.dict_size) == sizeof(u32));
-      std::memcpy(compressor_data_out + 1, &m_options.dict_size, sizeof(u32));
-    }
-  }
-  else
-  {
-    if (compressor_data_size_out)
-      *compressor_data_size_out = 1;
-
-    if (compressor_data_out)
-    {
-      u8 encoded_dict_size = 0;
-      while (encoded_dict_size < 40 && m_options.dict_size > LZMA2DictionarySize(encoded_dict_size))
-        ++encoded_dict_size;
-
-      compressor_data_out[0] = encoded_dict_size;
-    }
-  }
-
-  m_filters[0].id = lzma2 ? LZMA_FILTER_LZMA2 : LZMA_FILTER_LZMA1;
-  m_filters[0].options = &m_options;
-  m_filters[1].id = LZMA_VLI_UNKNOWN;
-  m_filters[1].options = nullptr;
-}
-
-WIAFileReader::LZMACompressor::~LZMACompressor()
-{
-  lzma_end(&m_stream);
-}
-
-bool WIAFileReader::LZMACompressor::Start()
-{
-  if (m_initialization_failed)
-    return false;
-
-  m_buffer.clear();
-  m_stream.next_out = m_buffer.data();
-
-  return lzma_raw_encoder(&m_stream, m_filters) == LZMA_OK;
-}
-
-bool WIAFileReader::LZMACompressor::Compress(const u8* data, size_t size)
-{
-  m_stream.next_in = data;
-  m_stream.avail_in = size;
-
-  ExpandBuffer(size);
-
-  while (m_stream.avail_in != 0)
-  {
-    if (m_stream.avail_out == 0)
-      ExpandBuffer(0x100);
-
-    if (lzma_code(&m_stream, LZMA_RUN) != LZMA_OK)
-      return false;
-  }
-
-  return true;
-}
-
-bool WIAFileReader::LZMACompressor::End()
-{
-  while (true)
-  {
-    if (m_stream.avail_out == 0)
-      ExpandBuffer(0x100);
-
-    switch (lzma_code(&m_stream, LZMA_FINISH))
-    {
-    case LZMA_OK:
-      break;
-    case LZMA_STREAM_END:
-      return true;
-    default:
-      return false;
-    }
-  }
-}
-
-void WIAFileReader::LZMACompressor::ExpandBuffer(size_t bytes_to_add)
-{
-  const size_t bytes_written = GetSize();
-  m_buffer.resize(m_buffer.size() + bytes_to_add);
-  m_stream.next_out = m_buffer.data() + bytes_written;
-  m_stream.avail_out = m_buffer.size() - bytes_written;
-}
-
-const u8* WIAFileReader::LZMACompressor::GetData() const
-{
-  return m_buffer.data();
-}
-
-size_t WIAFileReader::LZMACompressor::GetSize() const
-{
-  return static_cast<size_t>(m_stream.next_out - m_buffer.data());
-}
-
-WIAFileReader::ZstdCompressor::ZstdCompressor(int compression_level)
-{
-  m_stream = ZSTD_createCStream();
-
-  if (ZSTD_isError(ZSTD_CCtx_setParameter(m_stream, ZSTD_c_compressionLevel, compression_level)))
-    m_stream = nullptr;
-}
-
-WIAFileReader::ZstdCompressor::~ZstdCompressor()
-{
-  ZSTD_freeCStream(m_stream);
-}
-
-bool WIAFileReader::ZstdCompressor::Start()
-{
-  if (!m_stream)
-    return false;
-
-  m_buffer.clear();
-  m_out_buffer = {};
-
-  return !ZSTD_isError(ZSTD_CCtx_reset(m_stream, ZSTD_reset_session_only));
-}
-
-bool WIAFileReader::ZstdCompressor::Compress(const u8* data, size_t size)
-{
-  ZSTD_inBuffer in_buffer{data, size, 0};
-
-  ExpandBuffer(size);
-
-  while (in_buffer.size != in_buffer.pos)
-  {
-    if (m_out_buffer.size == m_out_buffer.pos)
-      ExpandBuffer(0x100);
-
-    if (ZSTD_isError(ZSTD_compressStream(m_stream, &m_out_buffer, &in_buffer)))
-      return false;
-  }
-
-  return true;
-}
-
-bool WIAFileReader::ZstdCompressor::End()
-{
-  while (true)
-  {
-    if (m_out_buffer.size == m_out_buffer.pos)
-      ExpandBuffer(0x100);
-
-    const size_t result = ZSTD_endStream(m_stream, &m_out_buffer);
-    if (ZSTD_isError(result))
-      return false;
-    if (result == 0)
-      return true;
-  }
-}
-
-void WIAFileReader::ZstdCompressor::ExpandBuffer(size_t bytes_to_add)
-{
-  m_buffer.resize(m_buffer.size() + bytes_to_add);
-
-  m_out_buffer.dst = m_buffer.data();
-  m_out_buffer.size = m_buffer.size();
-}
-
 WIAFileReader::Chunk::Chunk() = default;
 
 WIAFileReader::Chunk::Chunk(File::IOFile* file, u64 offset_in_file, u64 compressed_size,