From e7a7d6960d605b668da0332ee75605d52d0c7543 Mon Sep 17 00:00:00 2001
From: whiterandrek
Date: Mon, 28 May 2018 18:57:36 +0300
Subject: PINK: add savestate metadata support

---
 engines/pink/detection.cpp | 20 +++++++++++++-
 engines/pink/pink.cpp      | 68 +++++++++++++++++++++++++++++++++++++++++-----
 engines/pink/pink.h        |  1 +
 3 files changed, 81 insertions(+), 8 deletions(-)

(limited to 'engines')

diff --git a/engines/pink/detection.cpp b/engines/pink/detection.cpp
index 619bf5d227..71b353526f 100644
--- a/engines/pink/detection.cpp
+++ b/engines/pink/detection.cpp
@@ -50,7 +50,7 @@ public:
 	virtual int getMaximumSaveSlot() const { return 99; }
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual void removeSaveState(const char *target, int slot) const;
-	//virtual SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const;
+	virtual SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const;
 	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
 };
 
@@ -58,6 +58,10 @@ bool PinkMetaEngine::hasFeature(MetaEngineFeature f) const {
 	return
 			(f == kSupportsListSaves) ||
 			(f == kSupportsDeleteSave) ||
+			(f == kSavesSupportMetaInfo) ||
+			(f == kSavesSupportThumbnail) ||
+			(f == kSavesSupportCreationDate) ||
+			(f == kSavesSupportPlayTime) ||
 			(f == kSupportsLoadingDuringStartup) ||
 			(f == kSimpleSavesNames);
 }
@@ -90,6 +94,20 @@ void PinkMetaEngine::removeSaveState(const char *target, int slot) const {
 	g_system->getSavefileManager()->removeSavefile(Pink::generateSaveName(slot, target));
 }
 
+SaveStateDescriptor PinkMetaEngine::querySaveMetaInfos(const char *target, int slot) const {
+	Common::ScopedPtr<Common::InSaveFile> f(g_system->getSavefileManager()->openForLoading(Pink::generateSaveName(slot, target)));
+
+	if (f) {
+		SaveStateDescriptor desc;
+		if (!Pink::readSaveHeader(*f.get(), desc))
+			return SaveStateDescriptor();
+
+		return desc;
+	}
+
+	return SaveStateDescriptor();
+}
+
 bool PinkMetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const {
 	if (desc)
 		*engine = new Pink::PinkEngine(syst, desc);
diff --git a/engines/pink/pink.cpp b/engines/pink/pink.cpp
index d886c77863..01f9ad1632 100644
--- a/engines/pink/pink.cpp
+++ b/engines/pink/pink.cpp
@@ -20,6 +20,8 @@
  *
  */
 
+#include <graphics/thumbnail.h>
+#include <graphics/surface.h>
 #include "common/debug-channels.h"
 #include "common/winexe_pe.h"
 #include "common/config-manager.h"
@@ -247,11 +249,15 @@ void PinkEngine::setCursor(uint cursorIndex) {
 }
 
 Common::Error PinkEngine::loadGameState(int slot) {
-	Common::SeekableReadStream *stream = _saveFileMan->openForLoading(generateSaveName(slot, _desc.gameId));
-	if (!stream)
+	Common::SeekableReadStream *in = _saveFileMan->openForLoading(generateSaveName(slot, _desc.gameId));
+	if (!in)
 		return Common::kNoGameDataFoundError;
 
-	Archive archive(stream);
+	SaveStateDescriptor desc;
+	if (!readSaveHeader(*in, desc))
+		return Common::kUnknownError;
+
+	Archive archive(in);
 	_variables.deserialize(archive);
 	_nextModule = archive.readString();
 	_nextPage = archive.readString();
@@ -265,11 +271,26 @@ bool PinkEngine::canLoadGameStateCurrently() {
 }
 
 Common::Error PinkEngine::saveGameState(int slot, const Common::String &desc) {
-	Common::WriteStream *stream = _saveFileMan->openForSaving(generateSaveName(slot, _desc.gameId));
-	if (!stream)
+	Common::OutSaveFile *out = _saveFileMan->openForSaving(generateSaveName(slot, _desc.gameId));
+	if (!out)
+		return Common::kUnknownError;
+
+	Archive archive(out);
+
+	out->write("pink", 4);
+	archive.writeString(desc);
+
+	TimeDate curTime;
+	_system->getTimeAndDate(curTime);
+
+	out->writeUint32LE(((curTime.tm_mday & 0xFF) << 24) | (((curTime.tm_mon + 1) & 0xFF) << 16) | ((curTime.tm_year + 1900) & 0xFFFF));
+	out->writeUint16LE(((curTime.tm_hour & 0xFF) << 8) | ((curTime.tm_min) & 0xFF));
+
+	out->writeUint32LE(getTotalPlayTime() / 1000);
+
+	if (!Graphics::saveThumbnail(*out))
 		return Common::kUnknownError;
 
-	Archive archive(stream);
 	_variables.serialize(archive);
 	archive.writeString(_nextModule);
 	archive.writeString(_nextPage);
@@ -277,7 +298,7 @@ Common::Error PinkEngine::saveGameState(int slot, const Common::String &desc) {
 	archive.writeString(_module->getName());
 	_module->saveState(archive);
 
-	delete stream;
+	delete out;
 
 	return Common::kNoError;
 }
@@ -303,4 +324,37 @@ Common::String generateSaveName(int slot, const char *gameId) {
 	return Common::String::format("%s.s%02d", gameId, slot);
 }
 
+bool readSaveHeader(Common::InSaveFile &in, SaveStateDescriptor &desc) {
+	char pink[4];
+	in.read(&pink, 4);
+	if (strcmp(pink, "pink"))
+		return false;
+
+	const Common::String description = in.readPascalString();
+	uint32 date = in.readUint32LE();
+	uint16 time = in.readUint16LE();
+	uint32 playTime = in.readUint32LE();
+	if (!Graphics::checkThumbnailHeader(in))
+		return false;
+
+	Graphics::Surface *thumbnail;
+	if (!Graphics::loadThumbnail(in, thumbnail))
+		return false;
+
+	int day = (date >> 24) & 0xFF;
+	int month = (date >> 16) & 0xFF;
+	int year = date & 0xFFFF;
+
+	int hour = (time >> 8) & 0xFF;
+	int minutes = time & 0xFF;
+
+	desc.setSaveDate(year, month, day);
+	desc.setSaveTime(hour, minutes);
+	desc.setPlayTime(playTime * 1000);
+	desc.setDescription(description);
+	desc.setThumbnail(thumbnail);
+
+	return true;
+}
+
 }
diff --git a/engines/pink/pink.h b/engines/pink/pink.h
index 1e0f703ec5..e6e698ed38 100644
--- a/engines/pink/pink.h
+++ b/engines/pink/pink.h
@@ -141,6 +141,7 @@ private:
 	const ADGameDescription _desc;
 };
 
+bool readSaveHeader(Common::InSaveFile &in, SaveStateDescriptor &desc);
 Common::String generateSaveName(int slot, const char *gameId);
 
 } // End of namespace Pink
-- 
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