本文整理汇总了C++中EMUFILE_MEMORY::set_len方法的典型用法代码示例。如果您正苦于以下问题：C++ EMUFILE_MEMORY::set_len方法的具体用法？C++ EMUFILE_MEMORY::set_len怎么用？C++ EMUFILE_MEMORY::set_len使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类EMUFILE_MEMORY的用法示例。
在下文中一共展示了EMUFILE_MEMORY::set_len方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: FCEUSS_SaveMS
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 + 8;
os->fputc(8);
write32le(size, os);
os->fwrite((char*)XBackBuf,size);
totalsize += 5 + size;
}
if(SPreSave) SPreSave();
totalsize+=WriteStateChunk(os,0x10,SFMDATA);
if(SPreSave) SPostSave();
//save the length of the file
int len = memory_savestate.size();
//sanity check: len and totalsize should be the same
if(len != totalsize)
{
FCEUD_PrintError("sanity violation: len != totalsize");
return false;
}
int error = Z_OK;
uint8* cbuf = (uint8*)memory_savestate.buf();
uLongf comprlen = -1;
if(compressionLevel != Z_NO_COMPRESSION && (compressSavestates || FCEUMOV_Mode(MOVIEMODE_TASEDITOR)))
{
// worst case compression: zlib says "0.1% larger than sourceLen plus 12 bytes"
comprlen = (len>>9)+12 + len;
if (compressed_buf.size() < comprlen) compressed_buf.resize(comprlen);
cbuf = &compressed_buf[0];
// do compression
error = compress2(cbuf, &comprlen, (uint8*)memory_savestate.buf(), len, compressionLevel);
}