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Merge remote-tracking branch 'upstream/master'

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dP
2021-04-01 14:08:04 +03:00
parent 68bb40976f da3cfd2821
commit 55557c0529
8 changed files with 351 additions and 34 deletions
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1
Doxyfile
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@@ -290,6 +290,7 @@ INCLUDE_FILE_PATTERNS =
PREDEFINED = WITH_ZLIB \
WITH_LZO \
WITH_LIBLZMA \
WITH_ZSTD \
WITH_SDL \
WITH_PNG \
WITH_FONTCONFIG \

38
config.lib
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@@ -68,6 +68,7 @@ set_default() {
with_cocoa="1"
with_zlib="1"
with_lzma="1"
with_zstd="1"
with_lzo2="1"
with_xdg_basedir="1"
with_png="1"
@@ -340,6 +341,10 @@ detect_params() {
--without-liblzma) with_lzma="0";;
--with-liblzma=*) with_lzma="$optarg";;
--with-zstd) with_zstd="2";;
--without-zstd) with_zstd="0";;
--with-zstd=*) with_zstd="$optarg";;
--with-lzo2) with_lzo2="2";;
--without-lzo2) with_lzo2="0";;
--with-lzo2=*) with_lzo2="$optarg";;
@@ -824,6 +829,20 @@ check_params() {
fi
fi
pre_detect_with_zstd=$with_zstd
detect_zstd
if [ "$with_zstd" = "0" ] || [ -z "$zstd_config" ]; then
log 1 "WARNING: zstd was not detected or disabled"
if [ "$pre_detect_with_zstd" = "0" ]; then
log 1 "WARNING: We strongly suggest you to install zstd."
else
log 1 "configure: error: no zstd detected"
log 1 " If you want to compile without zstd use --without-zstd as parameter"
exit
fi
fi
pre_detect_with_lzo2=$with_lzo2
detect_lzo2
@@ -1480,8 +1499,8 @@ make_cflags_and_ldflags() {
CFLAGS="$CFLAGS -D$os"
CFLAGS_BUILD="$CFLAGS_BUILD -D$os"
CXXFLAGS="$CXXFLAGS -std=c++11"
CXXFLAGS_BUILD="$CXXFLAGS_BUILD -std=c++11"
CXXFLAGS="$CXXFLAGS -std=c++17"
CXXFLAGS_BUILD="$CXXFLAGS_BUILD -std=c++17"
if [ "$enable_debug" = "0" ]; then
# No debug, add default stuff
@@ -1690,6 +1709,17 @@ make_cflags_and_ldflags() {
fi
fi
if [ -n "$zstd_config" ]; then
CFLAGS="$CFLAGS -DWITH_ZSTD"
CFLAGS="$CFLAGS `$zstd_config --cflags | tr '\n\r' ' '`"
if [ "$enable_static" != "0" ]; then
LIBS="$LIBS `$zstd_config --libs --static | tr '\n\r' ' '`"
else
LIBS="$LIBS `$zstd_config --libs | tr '\n\r' ' '`"
fi
fi
if [ "$with_lzo2" != "0" ]; then
if [ "$enable_static" != "0" ] && [ "$os" != "OSX" ]; then
LIBS="$LIBS $lzo2"
@@ -2796,6 +2826,10 @@ detect_lzma() {
detect_pkg_config "$with_lzma" "liblzma" "lzma_config" "5.0"
}
detect_zstd() {
detect_pkg_config "$with_zstd" "libzstd" "zstd_config" "1.4"
}
detect_xdg_basedir() {
detect_pkg_config "$with_xdg_basedir" "libxdg-basedir" "xdg_basedir_config" "1.2"
}

7
src/crashlog.cpp
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@@ -56,6 +56,9 @@
#ifdef WITH_LIBLZMA
# include <lzma.h>
#endif
#ifdef WITH_ZSTD
#include <zstd.h>
#endif
#ifdef WITH_LZO
#include <lzo/lzo1x.h>
#endif
@@ -255,6 +258,10 @@ char *CrashLog::LogLibraries(char *buffer, const char *last) const
buffer += seprintf(buffer, last, " LZMA: %s\n", lzma_version_string());
#endif
#ifdef WITH_ZSTD
buffer += seprintf(buffer, last, " ZSTD: %s\n", ZSTD_versionString());
#endif
#ifdef WITH_LZO
buffer += seprintf(buffer, last, " LZO: %s\n", lzo_version_string());
#endif

1
src/network/network_client.cpp
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@@ -386,6 +386,7 @@ NetworkRecvStatus ClientNetworkGameSocketHandler::SendJoin()
p->Send_string(_settings_client.network.client_name); // Client name
p->Send_uint8 (_network_join_as); // PlayAs
p->Send_uint8 (NETLANG_ANY); // Language
p->Send_uint8 (citymania::GetAvailableLoadFormats()); // Compressnion formats that we can decompress
my_client->SendPacket(p);
return NETWORK_RECV_STATUS_OKAY;
}

8
src/network/network_server.cpp
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@@ -592,7 +592,7 @@ NetworkRecvStatus ServerNetworkGameSocketHandler::SendMap()
sent_packets = 4; // We start with trying 4 packets
/* Make a dump of the current game */
if (SaveWithFilter(this->savegame, true) != SL_OK) usererror("network savedump failed");
if (SaveWithFilter(this->savegame, true, this->cm_preset) != SL_OK) usererror("network savedump failed");
}
if (this->status == STATUS_MAP) {
@@ -908,9 +908,15 @@ NetworkRecvStatus ServerNetworkGameSocketHandler::Receive_CLIENT_JOIN(Packet *p)
p->Recv_string(name, sizeof(name));
playas = (Owner)p->Recv_uint8();
client_lang = (NetworkLanguage)p->Recv_uint8();
uint8 savegame_formats = p->CanReadFromPacket(1) ? p->Recv_uint8() : 23u /* assume non-modded has everything but zstd */;
if (this->HasClientQuit()) return NETWORK_RECV_STATUS_CONN_LOST;
/* Find common savegame compression format to use */
auto preset = citymania::FindCompatibleSavePreset("", savegame_formats);
if (!preset) return this->SendError(NETWORK_ERROR_NOT_EXPECTED);
this->cm_preset = *preset;
/* join another company does not affect these values */
switch (playas) {
case COMPANY_NEW_COMPANY: // New company

2
src/network/network_server.h
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@@ -12,6 +12,7 @@
#include "network_internal.h"
#include "core/tcp_listen.h"
#include "../saveload/saveload.h"
class ServerNetworkGameSocketHandler;
/** Make the code look slightly nicer/simpler. */
@@ -72,6 +73,7 @@ public:
struct PacketWriter *savegame; ///< Writer used to write the savegame.
NetworkAddress client_address; ///< IP-address of the client (so he can be banned)
citymania::SavePreset cm_preset; ///< Preset to use for the savegame
ServerNetworkGameSocketHandler(SOCKET s);
~ServerNetworkGameSocketHandler();

287
src/saveload/saveload.cpp
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@@ -44,6 +44,7 @@
#include "../fios.h"
#include "../error.h"
#include <atomic>
#include <sstream>
#include "table/strings.h"
@@ -2275,40 +2276,163 @@ struct LZMASaveFilter : SaveFilter {
#endif /* WITH_LIBLZMA */
/********************************************
********** START OF ZSTD CODE **************
********************************************/
#if defined(WITH_ZSTD)
#include <zstd.h>
/** Filter using ZSTD compression. */
struct ZSTDLoadFilter : LoadFilter {
ZSTD_DCtx *zstd; ///< ZSTD decompression context
byte fread_buf[MEMORY_CHUNK_SIZE]; ///< Buffer for reading from the file
ZSTD_inBuffer input; ///< ZSTD input buffer for fread_buf
/**
* Initialise this filter.
* @param chain The next filter in this chain.
*/
ZSTDLoadFilter(LoadFilter *chain) : LoadFilter(chain)
{
this->zstd = ZSTD_createDCtx();
if (!this->zstd) SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_INTERNAL_ERROR, "cannot initialize compressor");
this->input = {this->fread_buf, 0, 0};
}
/** Clean everything up. */
~ZSTDLoadFilter()
{
ZSTD_freeDCtx(this->zstd);
}
size_t Read(byte *buf, size_t size) override
{
ZSTD_outBuffer output{buf, size, 0};
do {
/* read more bytes from the file? */
if (this->input.pos == this->input.size) {
this->input.size = this->chain->Read(this->fread_buf, sizeof(this->fread_buf));
this->input.pos = 0;
}
size_t ret = ZSTD_decompressStream(this->zstd, &output, &this->input);
if (ZSTD_isError(ret)) SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_INTERNAL_ERROR, "libzstd returned error code");
if (ret == 0) break;
} while (output.pos < output.size);
return output.pos;
}
};
/** Filter using ZSTD compression. */
struct ZSTDSaveFilter : SaveFilter {
ZSTD_CCtx *zstd; ///< ZSTD compression context
/**
* Initialise this filter.
* @param chain The next filter in this chain.
* @param compression_level The requested level of compression.
*/
ZSTDSaveFilter(SaveFilter *chain, byte compression_level) : SaveFilter(chain)
{
this->zstd = ZSTD_createCCtx();
if (!this->zstd) SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_INTERNAL_ERROR, "cannot initialize compressor");
if (ZSTD_isError(ZSTD_CCtx_setParameter(this->zstd, ZSTD_c_compressionLevel, (int)compression_level - 100))) {
ZSTD_freeCCtx(this->zstd);
SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_INTERNAL_ERROR, "invalid compresison level");
}
}
/** Clean up what we allocated. */
~ZSTDSaveFilter()
{
ZSTD_freeCCtx(this->zstd);
}
/**
* Helper loop for writing the data.
* @param p The bytes to write.
* @param len Amount of bytes to write.
* @param mode Mode for ZSTD_compressStream2.
*/
void WriteLoop(byte *p, size_t len, ZSTD_EndDirective mode)
{
byte buf[MEMORY_CHUNK_SIZE]; // output buffer
ZSTD_inBuffer input{p, len, 0};
bool finished;
do {
ZSTD_outBuffer output{buf, sizeof(buf), 0};
size_t remaining = ZSTD_compressStream2(this->zstd, &output, &input, mode);
if (ZSTD_isError(remaining)) SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_INTERNAL_ERROR, "libzstd returned error code");
if (output.pos != 0) this->chain->Write(buf, output.pos);
finished = (mode == ZSTD_e_end ? (remaining == 0) : (input.pos == input.size));
} while (!finished);
}
void Write(byte *buf, size_t size) override
{
this->WriteLoop(buf, size, ZSTD_e_continue);
}
void Finish() override
{
this->WriteLoop(nullptr, 0, ZSTD_e_end);
this->chain->Finish();
}
};
#endif /* WITH_LIBZSTD */
/*******************************************
************* END OF CODE *****************
*******************************************/
/** The format for a reader/writer type of a savegame */
struct SaveLoadFormat {
const char *name; ///< name of the compressor/decompressor (debug-only)
uint32 tag; ///< the 4-letter tag by which it is identified in the savegame
// struct SaveLoadFormat {
// const char *name; ///< name of the compressor/decompressor (debug-only)
// uint32 tag; ///< the 4-letter tag by which it is identified in the savegame
LoadFilter *(*init_load)(LoadFilter *chain); ///< Constructor for the load filter.
SaveFilter *(*init_write)(SaveFilter *chain, byte compression); ///< Constructor for the save filter.
// LoadFilter *(*init_load)(LoadFilter *chain); ///< Constructor for the load filter.
// SaveFilter *(*init_write)(SaveFilter *chain, byte compression); ///< Constructor for the save filter.
byte min_compression; ///< the minimum compression level of this format
byte default_compression; ///< the default compression level of this format
byte max_compression; ///< the maximum compression level of this format
};
// byte min_compression; ///< the minimum compression level of this format
// byte default_compression; ///< the default compression level of this format
// byte max_compression; ///< the maximum compression level of this format
// };
/** The different saveload formats known/understood by OpenTTD. */
static const SaveLoadFormat _saveload_formats[] = {
static const citymania::SaveLoadFormat _saveload_formats[] = {
/* Roughly 5 times larger at only 1% of the CPU usage over zlib level 6. */
{0, "none", TO_BE32X('OTTN'), CreateLoadFilter<NoCompLoadFilter>, CreateSaveFilter<NoCompSaveFilter>, citymania::CompressionMethod::None, 0, 0, 0},
#if defined(WITH_LZO)
/* Roughly 75% larger than zlib level 6 at only ~7% of the CPU usage. */
{"lzo", TO_BE32X('OTTD'), CreateLoadFilter<LZOLoadFilter>, CreateSaveFilter<LZOSaveFilter>, 0, 0, 0},
{1, "lzo", TO_BE32X('OTTD'), CreateLoadFilter<LZOLoadFilter>, CreateSaveFilter<LZOSaveFilter>, citymania::CompressionMethod::LZO, 0, 0, 0},
#else
{"lzo", TO_BE32X('OTTD'), nullptr, nullptr, 0, 0, 0},
{1, "lzo", TO_BE32X('OTTD'), nullptr, nullptr, citymania::CompressionMethod::LZO, 0, 0, 0},
#endif
/* Roughly 5 times larger at only 1% of the CPU usage over zlib level 6. */
{"none", TO_BE32X('OTTN'), CreateLoadFilter<NoCompLoadFilter>, CreateSaveFilter<NoCompSaveFilter>, 0, 0, 0},
#if defined(WITH_ZLIB)
/* After level 6 the speed reduction is significant (1.5x to 2.5x slower per level), but the reduction in filesize is
* fairly insignificant (~1% for each step). Lower levels become ~5-10% bigger by each level than level 6 while level
* 1 is "only" 3 times as fast. Level 0 results in uncompressed savegames at about 8 times the cost of "none". */
{"zlib", TO_BE32X('OTTZ'), CreateLoadFilter<ZlibLoadFilter>, CreateSaveFilter<ZlibSaveFilter>, 0, 6, 9},
{2, "zlib", TO_BE32X('OTTZ'), CreateLoadFilter<ZlibLoadFilter>, CreateSaveFilter<ZlibSaveFilter>, citymania::CompressionMethod::Zlib, 0, 6, 9},
#else
{"zlib", TO_BE32X('OTTZ'), nullptr, nullptr, 0, 0, 0},
{2, "zlib", TO_BE32X('OTTZ'), nullptr, nullptr, citymania::CompressionMethod::Zlib, 0, 0, 0},
#endif
#if defined(WITH_ZSTD)
/* Zstd provides a decent compression rate at a very high compression/decompression speed. Compared to lzma level 2
* zstd saves are about 40% larger (on level 1) but it has about 30x faster compression and 5x decompression making it
* a good choice for multiplayer servers. And zstd level 1 seems to be the optimal one for client connection speed
* (compress + 10 MB/s download + decompress time), about 3x faster than lzma:2 and 1.5x than zlib:2 and lzo.
* As zstd has negative compression levels the values were increased by 100 moving zstd level range -100..22 into
* openttd 0..122. Also note that value 100 mathes zstd level 0 which is a special value for default level 3 (openttd 103) */
{3, "zstd", TO_BE32X('OTTS'), CreateLoadFilter<ZSTDLoadFilter>, CreateSaveFilter<ZSTDSaveFilter>, citymania::CompressionMethod::ZSTD, 0, 101, 122},
#else
{3, "zstd", TO_BE32X('OTTS'), nullptr, nullptr, citymania::CompressionMethod::ZSTD, 0, 0, 0},
#endif
#if defined(WITH_LIBLZMA)
/* Level 2 compression is speed wise as fast as zlib level 6 compression (old default), but results in ~10% smaller saves.
@@ -2316,12 +2440,111 @@ static const SaveLoadFormat _saveload_formats[] = {
* The next significant reduction in file size is at level 4, but that is already 4 times slower. Level 3 is primarily 50%
* slower while not improving the filesize, while level 0 and 1 are faster, but don't reduce savegame size much.
* It's OTTX and not e.g. OTTL because liblzma is part of xz-utils and .tar.xz is preferred over .tar.lzma. */
{"lzma", TO_BE32X('OTTX'), CreateLoadFilter<LZMALoadFilter>, CreateSaveFilter<LZMASaveFilter>, 0, 2, 9},
{4, "lzma", TO_BE32X('OTTX'), CreateLoadFilter<LZMALoadFilter>, CreateSaveFilter<LZMASaveFilter>, citymania::CompressionMethod::LZMA, 0, 2, 9},
#else
{"lzma", TO_BE32X('OTTX'), nullptr, nullptr, 0, 0, 0},
{4, "lzma", TO_BE32X('OTTX'), nullptr, nullptr, citymania::CompressionMethod::LZMA, 0, 0, 0},
#endif
};
namespace citymania { // citymania savegame format handling
static const std::string DEFAULT_NETWORK_SAVEGAME_COMPRESSION = "zstd:1 zlib:2 lzma:0 lzo:0";
/**
* Parses the savegame format and compression level string ("format:[compression_level]").
* @param str String to parse
* @return Parsest SavePreset or std::nullopt
*/
static std::optional<SavePreset> ParseSavePreset(const std::string &str)
{
auto delimiter_pos = str.find(':');
auto format = (delimiter_pos != std::string::npos ? str.substr(0, delimiter_pos) : str);
for (auto &slf : _saveload_formats) {
if (slf.init_write != nullptr && format == slf.name) {
/* If compression level wasn't specified use the default one */
if (delimiter_pos == std::string::npos) return SavePreset{&slf, slf.default_compression};
auto level_str = str.substr(delimiter_pos + 1);
int level;
try{
level = stoi(level_str);
} catch(const std::exception &e) {
/* Can't parse compression level, set it out ouf bounds to fail later */
level = (int)slf.max_compression + 1;
}
if (level != Clamp<int>(level, slf.min_compression, slf.max_compression)) {
/* Invalid compression level, show the error and use default level */
SetDParamStr(0, level_str.c_str());
ShowErrorMessage(STR_CONFIG_ERROR, STR_CONFIG_ERROR_INVALID_SAVEGAME_COMPRESSION_LEVEL, WL_CRITICAL);
return SavePreset{&slf, slf.default_compression};
}
return SavePreset{&slf, (byte)level};
}
}
SetDParamStr(0, str.c_str());
ShowErrorMessage(STR_CONFIG_ERROR, STR_CONFIG_ERROR_INVALID_SAVEGAME_COMPRESSION_ALGORITHM, WL_CRITICAL);
return {};
}
static_assert(lengthof(_saveload_formats) <= 8); // uint8 is used for the bitset of format ids
/**
* Finds the best savegame preset to use in network game based on server settings and client capabilies.
* @param server_formats String of space-separated format descriptions in form format[:compression_level] acceptable for the server (listed first take priority).
* @param client_formats Bitset of savegame formats available to the client (as returned by GetAvailableLoadFormats)
* @return SavePreset that satisfies both server and client or std::nullopt
*/
std::optional<SavePreset> FindCompatibleSavePreset(const std::string &server_formats, uint8 client_formats)
{
std::istringstream iss(server_formats.empty() ? DEFAULT_NETWORK_SAVEGAME_COMPRESSION : server_formats);
std::string preset_str;
while (std::getline(iss, preset_str, ' ')) {
auto preset = ParseSavePreset(preset_str);
if (!preset) continue;
if ((client_formats & (1 << preset->format->id)) != 0) return preset;
}
return {};
}
/**
* Return the bitset of savegame formats that this game instance can load
* @return bitset of available savegame formats
*/
uint8 GetAvailableLoadFormats()
{
return 3;
uint8 res = 0;
for(auto &slf : _saveload_formats) {
if (slf.init_load != nullptr) {
res &= (1 << slf.id);
}
}
return res;
}
/**
* Return the save preset to use for local game saves.
* @return SavePreset to use
*/
static SavePreset GetLocalSavePreset()
{
if (!StrEmpty(_savegame_format)) {
auto config = ParseSavePreset(_savegame_format);
if (config) return *config;
}
const citymania::SaveLoadFormat *def = lastof(_saveload_formats);
/* find default savegame format, the highest one with which files can be written */
while (!def->init_write) def--;
return {def, def->default_compression};
}
} // namespace citymania
/**
* Return the savegameformat of the game. Whether it was created with ZLIB compression
* uncompressed, or another type
@@ -2329,6 +2552,8 @@ static const SaveLoadFormat _saveload_formats[] = {
* @param compression_level Output for telling what compression level we want.
* @return Pointer to SaveLoadFormat struct giving all characteristics of this type of savegame
*/
#if 0
Citymania uses other way
static const SaveLoadFormat *GetSavegameFormat(char *s, byte *compression_level)
{
const SaveLoadFormat *def = lastof(_saveload_formats);
@@ -2376,6 +2601,8 @@ static const SaveLoadFormat *GetSavegameFormat(char *s, byte *compression_level)
return def;
}
#endif
/* actual loader/saver function */
void InitializeGame(uint size_x, uint size_y, bool reset_date, bool reset_settings);
extern bool AfterLoadGame();
@@ -2463,17 +2690,17 @@ static void SaveFileError()
* We have written the whole game into memory, _memory_savegame, now find
* and appropriate compressor and start writing to file.
*/
static SaveOrLoadResult SaveFileToDisk(bool threaded)
static SaveOrLoadResult SaveFileToDisk(bool threaded, citymania::SavePreset preset)
{
try {
byte compression;
const SaveLoadFormat *fmt = GetSavegameFormat(_savegame_format, &compression);
// byte compression;
// const SaveLoadFormat *fmt = GetSavegameFormat(_savegame_format, &compression);
/* We have written our stuff to memory, now write it to file! */
uint32 hdr[2] = { fmt->tag, TO_BE32(SAVEGAME_VERSION << 16) };
uint32 hdr[2] = { preset.format->tag, TO_BE32(SAVEGAME_VERSION << 16) };
_sl.sf->Write((byte*)hdr, sizeof(hdr));
_sl.sf = fmt->init_write(_sl.sf, compression);
_sl.sf = preset.format->init_write(_sl.sf, preset.compression_level);
_sl.dumper->Flush(_sl.sf);
ClearSaveLoadState();
@@ -2521,7 +2748,7 @@ void WaitTillSaved()
* @param threaded Whether to try to perform the saving asynchronously.
* @return Return the result of the action. #SL_OK or #SL_ERROR
*/
static SaveOrLoadResult DoSave(SaveFilter *writer, bool threaded)
static SaveOrLoadResult DoSave(SaveFilter *writer, bool threaded, citymania::SavePreset preset)
{
assert(!_sl.saveinprogress);
@@ -2535,10 +2762,10 @@ static SaveOrLoadResult DoSave(SaveFilter *writer, bool threaded)
SaveFileStart();
if (!threaded || !StartNewThread(&_save_thread, "ottd:savegame", &SaveFileToDisk, true)) {
if (!threaded || !StartNewThread(&_save_thread, "ottd:savegame", &SaveFileToDisk, true, std::move(preset))) {
if (threaded) DEBUG(sl, 1, "Cannot create savegame thread, reverting to single-threaded mode...");
SaveOrLoadResult result = SaveFileToDisk(false);
SaveOrLoadResult result = SaveFileToDisk(false, preset);
SaveFileDone();
return result;
@@ -2553,11 +2780,11 @@ static SaveOrLoadResult DoSave(SaveFilter *writer, bool threaded)
* @param threaded Whether to try to perform the saving asynchronously.
* @return Return the result of the action. #SL_OK or #SL_ERROR
*/
SaveOrLoadResult SaveWithFilter(SaveFilter *writer, bool threaded)
SaveOrLoadResult SaveWithFilter(SaveFilter *writer, bool threaded, citymania::SavePreset preset)
{
try {
_sl.action = SLA_SAVE;
return DoSave(writer, threaded);
return DoSave(writer, threaded, preset);
} catch (...) {
ClearSaveLoadState();
return SL_ERROR;
@@ -2585,7 +2812,7 @@ static SaveOrLoadResult DoLoad(LoadFilter *reader, bool load_check)
if (_sl.lf->Read((byte*)hdr, sizeof(hdr)) != sizeof(hdr)) SlError(STR_GAME_SAVELOAD_ERROR_FILE_NOT_READABLE);
/* see if we have any loader for this type. */
const SaveLoadFormat *fmt = _saveload_formats;
const citymania::SaveLoadFormat *fmt = _saveload_formats;
for (;;) {
/* No loader found, treat as version 0 and use LZO format */
if (fmt == endof(_saveload_formats)) {
@@ -2797,7 +3024,7 @@ SaveOrLoadResult SaveOrLoad(const char *filename, SaveLoadOperation fop, Detaile
DEBUG(desync, 1, "save: %08x; %02x; %s", _date, _date_fract, filename);
if (_network_server || !_settings_client.gui.threaded_saves) threaded = false;
return DoSave(new FileWriter(fh), threaded);
return DoSave(new FileWriter(fh), threaded, citymania::GetLocalSavePreset());
}
/* LOAD game */

41
src/saveload/saveload.h
View File

@@ -12,6 +12,9 @@
#include "../fileio_type.h"
#include "../strings_type.h"
#include "saveload_filter.h"
#include <optional>
#include <string>
/** SaveLoad versions
* Previous savegame versions, the trunk revision where they were
@@ -337,6 +340,42 @@ enum SavegameType {
SGT_INVALID = 0xFF, ///< broken savegame (used internally)
};
namespace citymania {
enum class CompressionMethod : uint8 {
None = 0u,
LZO = 1u,
Zlib = 2u,
ZSTD = 3u,
LZMA = 4u,
};
/** The format for a reader/writer type of a savegame */
struct SaveLoadFormat {
uint8 id; ///< unique integer id of this savegame format (olny used for networkking so is not guaranteed to be preserved between versions)
const char *name; ///< name of the compressor/decompressor (debug-only)
uint32 tag; ///< the 4-letter tag by which it is identified in the savegame
LoadFilter *(*init_load)(LoadFilter *chain); ///< Constructor for the load filter.
SaveFilter *(*init_write)(SaveFilter *chain, byte compression); ///< Constructor for the save filter.
CompressionMethod method; ///< compression method used in this format
byte min_compression; ///< the minimum compression level of this format
byte default_compression; ///< the default compression level of this format
byte max_compression; ///< the maximum compression level of this format
};
/** The preset to use for generating savegames */
struct SavePreset {
const SaveLoadFormat *format; ///< savegame format to use
byte compression_level; ///< compression level to use
};
std::optional<SavePreset> FindCompatibleSavePreset(const std::string &server_formats, uint8 client_format_flags);
uint8 GetAvailableLoadFormats();
} // namespace citymania
extern FileToSaveLoad _file_to_saveload;
void GenerateDefaultSaveName(char *buf, const char *last);
@@ -347,7 +386,7 @@ void WaitTillSaved();
void ProcessAsyncSaveFinish();
void DoExitSave();
SaveOrLoadResult SaveWithFilter(struct SaveFilter *writer, bool threaded);
SaveOrLoadResult SaveWithFilter(struct SaveFilter *writer, bool threaded, citymania::SavePreset preset);
SaveOrLoadResult LoadWithFilter(struct LoadFilter *reader);
typedef void ChunkSaveLoadProc();