Function FCEUSS_SaveMS

src/state.cpp:378–463

bool FCEUSS_SaveMS(EMUFILE* outstream, int compressionLevel)
{
	// reinit memory_savestate
	// memory_savestate is global variable which already has its vector of bytes, so no need to allocate memory every time we use save/loadstate
	memory_savestate.set_len(0);	// this also seeks to the beginning
	memory_savestate.unfail();

	EMUFILE* os = &memory_savestate;

	uint32 totalsize = 0;

	FCEUPPU_SaveState();
	FCEUSND_SaveState();
	totalsize=WriteStateChunk(os,1,SFCPU);
	totalsize+=WriteStateChunk(os,2,SFCPUC);
	totalsize+=WriteStateChunk(os,3,FCEUPPU_STATEINFO);
	totalsize+=WriteStateChunk(os,31,FCEU_NEWPPU_STATEINFO);
	totalsize+=WriteStateChunk(os,4,FCEUCTRL_STATEINFO);
	totalsize+=WriteStateChunk(os,5,FCEUSND_STATEINFO);
	if(FCEUMOV_Mode(MOVIEMODE_PLAY|MOVIEMODE_RECORD|MOVIEMODE_FINISHED))
	{
		totalsize+=WriteStateChunk(os,6,FCEUMOV_STATEINFO);

		//MBG TAS Editor HACK HACK HACK!
		//do not save the movie state if we are in Taseditor! That would be a huge waste of time and space!
		if(!FCEUMOV_Mode(MOVIEMODE_TASEDITOR))
		{
			os->fseek(5,SEEK_CUR);
			int size = FCEUMOV_WriteState(os);
			os->fseek(-(size+5),SEEK_CUR);
			os->fputc(7);
			write32le(size, os);
			os->fseek(size,SEEK_CUR);

			totalsize += 5 + size;
		}
	}
	// save back buffer
	{
		extern uint8 *XBackBuf;
		uint32 size = 256 * 256;
		os->fputc(8);
		write32le(size, os);
		os->fwrite((char*)XBackBuf,size);
		totalsize += 5 + size;
	}

	if(SPreSave) SPreSave();
	totalsize+=WriteStateChunk(os,0x10,SFMDATA);
	if(SPostSave) SPostSave();

	//save the length of the file
	size_t len = memory_savestate.size();

	//sanity check: len and totalsize should be the same
	if(len != totalsize)
	{
		FCEUD_PrintError("sanity violation: len != totalsize");