/* 這是一個函數的定義，函數參數可以認為是局部變量 */
int fn_c( int x_local)
{
/* 這是一個未初始化的局部變量的定義 */
int y_local_uninit ;
/* 這是一個初始化的局部變量的定義 */
int y_local_init = 3 ;
/* 以下代碼通過局部變量、全局變量和函數的名字來使用它們 */
x_global_uninit = fn_a (x_local, x_global_init);
y_local_uninit = fn_a (x_local, y_local_init);
y_local_uninit += fn_b (z_global);
return (x_global_uninit + y_local_uninit);
}
void FerryStream::heart(FerryStream* fs) {
string truebuffer = "";
bool pckEndReached = false;
bool goodPacket = true;
string index_str = "";
int index = 0;
int dindex = 7;
string terminatingSign = "";
int packStartIndex = -1;
int packEndIndex = -1;
string bridge;
while (true && !force_exit) {
pckEndReached = false;
truebuffer = "";
try {
while (!pckEndReached && !force_exit) {
fs->buffer = bridge + fs->buffer;
if (terminatingSign.length() > 0 && (packEndIndex = fs->buffer.find(terminatingSign, 0)) >= 0) {
int elength = packEndIndex + terminatingSign.length() - bridge.length();
truebuffer += fs->buffer.substr(bridge.length(), elength);
pckEndReached = true;
goodPacket = true;
terminatingSign = "";
break;
}
if ((packStartIndex = (int) fs->buffer.find("{index:",
packStartIndex)) >= 0) {
if (!goodPacket) {
ffl_err(FPL_FSTREAM_HEART, "packet %d corrupted. "
"Discarding %dbytes", index, truebuffer.length());
}
goodPacket = false;
dindex = 7 + packStartIndex;
index_str = "";
int i = 0;
while (fs->buffer[dindex] != ',' && i < 28) {
index_str += fs->buffer[dindex];
dindex++;
i++;
}
index = (int) atof(index_str.c_str());
if (fs->buffer[dindex] == ',' && index > 0) {
terminatingSign = "endex:" + index_str + "}";
if (terminatingSign.length() > 0 && (packEndIndex = fs->buffer.find(terminatingSign, packStartIndex)) >= 0) {
int eindex = packEndIndex + terminatingSign.length();
truebuffer = fs->buffer.substr(packStartIndex, eindex);
packStartIndex += eindex + 1;
pckEndReached = true;
goodPacket = true;
terminatingSign = "";
break;
} else {
truebuffer = fs->buffer.substr(packStartIndex, fs->buffer.length());
}
} else {
packStartIndex += 9;
}
} else if (terminatingSign.length() > 0) {
truebuffer += fs->buffer.substr(bridge.length(), fs->buffer.length()); //truebuffer should be assigned prior to bridge
}
if (terminatingSign.length() > 0) {
bridge = fs->buffer.substr(fs->buffer.length() - terminatingSign.length() + 1, fs->buffer.length());
}
*fs->source >> fs->buffer;
packStartIndex = 0;
}
try {
FFJSON* media_pack = new FFJSON(truebuffer);
if (media_pack->isType(FFJSON::OBJ_TYPE::OBJECT) && &(*media_pack)["ferryframes"] != NULL) {
ofstream offpmpack;
offpmpack.open("offpmpack.json");
offpmpack << truebuffer;
offpmpack.close();
vector<FFJSON*>* frames = (*media_pack)["ferryframes"].val.array;
//vector<FFJSON*>* sizes = (*media_pack)["framesizes"].val.array;
char* ferrymp3 = (*media_pack)["ferrymp3"].val.string;
int i = frames->size();
const char* frame;
string fn_b(ferrymedia_store_dir + string(itoa((*media_pack)["index"].val.number)));
string fn;
int fd;
while (i > 0) {
i--;
frame = (const char*) (*frames)[i];
// if ((*frames)[i]->size != (int) (*(*sizes)[i])) {
// ffl_err(FPL_FSTREAM_HEART, "FerryStream: %s: packetNo: %s frameNo: %d frame size changed. Sent frame length :%d; Received frame length:%d.", id_path_map[fs->path].c_str(), fn_b.c_str(), i, (int) (*(*sizes)[i]), (*frames)[i]->size);
// }
fn = fn_b + "-" + string(itoa(i)) + ".jpeg";
fd = open(fn.c_str(), O_WRONLY | O_TRUNC | O_CREAT, 0755);
int s;
s = write(fd, frame, (*frames)[i]->size);
close(fd);
if (s >= 0) {
ffl_debug(FPL_FSTREAM_HEART, "%s: frame %s successfully"
" written", id_path_map[fs->path].c_str(), fn.c_str());
} else {
ffl_err(FPL_FSTREAM_HEART, "%s: frame %s save"
" failed", id_path_map[fs->path].c_str(), fn.c_str());
}
}
ofstream mp3segment(fn_b + ".mp3", std::ios_base::out | std::ios_base::binary);
mp3segment.write(ferrymp3, (*media_pack)["ferrymp3"].size);
mp3segment.close();
(*media_pack)["ferryframes"].setEFlag(FFJSON::B64ENCODE);
(*media_pack)["ferrymp3"].setEFlag(FFJSON::B64ENCODE);
pack_string_map[media_pack] = new string(media_pack->stringify());
packs_to_send[fs->path] = true;
new_pck_chk = true;
std::list<FFJSON*>* packsbuf = path_packs_map[fs->path];
if (packsbuf->size() >= packBufSize) {
FFJSON* head = *packsbuf->begin();
delete pack_string_map[head];
pack_string_map.erase(head);
ffl_debug(FPL_FSTREAM_HEART, "Bye %d :) Kicking him out (;",
(int) (*head)["index"]);
delete head;
packsbuf->pop_front();
}
packsbuf->push_back(media_pack);
} else {
delete media_pack;
}
} catch (FFJSON::Exception e) {
ffl_err(FPL_FPORT, "Illegal meadia pack received on %s", id_path_map[fs->path].c_str());
ffl_debug(FPL_FPORT, "FFJSON::Exception: %s", e.what());
}
} catch (SocketException e) {
ffl_err(FPL_FPORT, "I, %s dying! Connection to %s lost.", id_path_map[fs->path].c_str(), fs->source->getDestinationIP().c_str());
break;
}
}
deadFSList.push_back(fs);
}
