New input starting method based on JSON capabilities.
This commit is contained in:
Thulinma
parent
b4feaebbe8
commit
08953540f6
5 changed files with 159 additions and 119 deletions
205
lib/stream.cpp
205
lib/stream.cpp
|
|
@ -13,6 +13,7 @@
|
|||
#include "socket.h"
|
||||
#include "defines.h"
|
||||
#include "shared_memory.h"
|
||||
#include "dtsc.h"
|
||||
|
||||
std::string Util::getTmpFolder() {
|
||||
std::string dir;
|
||||
|
|
@ -46,7 +47,7 @@ std::string Util::getTmpFolder() {
|
|||
/// letters to lowercase. If a '?' character is found, everything following
|
||||
/// that character is deleted. The original string is modified. If a '+'
|
||||
/// exists, then only the part before the + is sanitized.
|
||||
void Util::Stream::sanitizeName(std::string & streamname) {
|
||||
void Util::sanitizeName(std::string & streamname) {
|
||||
//strip anything that isn't numbers, digits or underscores
|
||||
size_t index = streamname.find('+');
|
||||
if(index != std::string::npos){
|
||||
|
|
@ -68,113 +69,127 @@ void Util::Stream::sanitizeName(std::string & streamname) {
|
|||
}
|
||||
}
|
||||
|
||||
bool Util::Stream::getLive(std::string streamname) {
|
||||
JSON::Value ServConf = JSON::fromFile(getTmpFolder() + "streamlist");
|
||||
std::string bufferTime;
|
||||
std::string debugLvl;
|
||||
std::string player_bin = Util::getMyPath() + "MistInBuffer";
|
||||
DEBUG_MSG(DLVL_WARN, "Starting %s -p -s %s", player_bin.c_str(), streamname.c_str());
|
||||
char * argv[15] = {(char *)player_bin.c_str(), (char *)"-p", (char *)"-s", (char *)streamname.c_str()};
|
||||
int argNum = 3;
|
||||
if (ServConf["streams"][streamname].isMember("DVR")) {
|
||||
bufferTime = ServConf["streams"][streamname]["DVR"].asString();
|
||||
argv[++argNum] = (char *)"-b";
|
||||
argv[++argNum] = (char *)bufferTime.c_str();
|
||||
}
|
||||
if (Util::Config::printDebugLevel != DEBUG){
|
||||
debugLvl = JSON::Value((long long)Util::Config::printDebugLevel).asString();
|
||||
argv[++argNum] = (char *)"--debug";
|
||||
argv[++argNum] = (char *)debugLvl.c_str();
|
||||
}
|
||||
argv[++argNum] = (char *)0;
|
||||
|
||||
int pid = fork();
|
||||
if (pid == -1) {
|
||||
FAIL_MSG("Forking process for stream %s failed: %s", streamname.c_str(), strerror(errno));
|
||||
return false;
|
||||
}
|
||||
if (pid == 0){
|
||||
execvp(argv[0], argv);
|
||||
FAIL_MSG("Starting process %s for stream %s failed: %s", argv[0], streamname.c_str(), strerror(errno));
|
||||
_exit(42);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/// Starts a process for a VoD stream.
|
||||
bool Util::Stream::getVod(std::string filename, std::string streamname) {
|
||||
std::string player_bin = Util::getMyPath() + "MistInDTSC";
|
||||
bool selected = false;
|
||||
if (filename.substr(filename.size() - 5) == ".dtsc") {
|
||||
player_bin = Util::getMyPath() + "MistInDTSC";
|
||||
selected = true;
|
||||
}
|
||||
if (filename.substr(filename.size() - 4) == ".flv") {
|
||||
player_bin = Util::getMyPath() + "MistInFLV";
|
||||
selected = true;
|
||||
}
|
||||
INFO_MSG("Starting %s -p -s %s %s", player_bin.c_str(), streamname.c_str(), filename.c_str());
|
||||
char * argv[15] = {(char *)player_bin.c_str(), (char *)"-p", (char *)"-s", (char *)streamname.c_str(), (char *)filename.c_str()};
|
||||
int argNum = 4;
|
||||
std::string debugLvl;
|
||||
if (Util::Config::printDebugLevel != DEBUG){
|
||||
debugLvl = JSON::Value((long long)Util::Config::printDebugLevel).asString();
|
||||
argv[++argNum] = (char *)"--debug";
|
||||
argv[++argNum] = (char *)debugLvl.c_str();
|
||||
}
|
||||
argv[++argNum] = (char *)0;
|
||||
bool Util::startInput(std::string streamname, std::string filename, bool forkFirst) {
|
||||
IPC::sharedPage mistConfOut("!mistConfig", 4*1024*1024);
|
||||
IPC::semaphore configLock("!mistConfLock", O_CREAT | O_RDWR, ACCESSPERMS, 1);
|
||||
configLock.wait();
|
||||
DTSC::Scan config = DTSC::Scan(mistConfOut.mapped, mistConfOut.len);
|
||||
|
||||
int pid = fork();
|
||||
if (pid == -1) {
|
||||
FAIL_MSG("Forking process for stream %s failed: %s", streamname.c_str(), strerror(errno));
|
||||
sanitizeName(streamname);
|
||||
std::string smp = streamname.substr(0, streamname.find('+'));
|
||||
//check if smp (everything before +) exists
|
||||
DTSC::Scan stream_cfg = config.getMember("streams").getMember(smp);
|
||||
if (!stream_cfg){
|
||||
DEBUG_MSG(DLVL_MEDIUM, "Stream %s not configured", streamname.c_str());
|
||||
configLock.post();//unlock the config semaphore
|
||||
return false;
|
||||
}
|
||||
if (pid == 0){
|
||||
execvp(argv[0], argv);
|
||||
FAIL_MSG("Starting process %s for stream %s failed: %s", argv[0], streamname.c_str(), strerror(errno));
|
||||
_exit(42);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/// Probe for available streams. Currently first VoD, then Live.
|
||||
bool Util::Stream::getStream(std::string streamname) {
|
||||
sanitizeName(streamname);
|
||||
JSON::Value ServConf = JSON::fromFile(getTmpFolder() + "streamlist");
|
||||
std::string smp = streamname.substr(0,(streamname.find('+')));
|
||||
//check if smp (everything before +) exists
|
||||
///\todo Check if the input type used for this stream supports + syntax, if not, reject the request if smp != streamname.
|
||||
if (ServConf["streams"].isMember(smp)){
|
||||
//Check if the stream is already active, if yes, don't activate again.
|
||||
//Note: this uses the _whole_ stream name, including + (if any).
|
||||
//This means "test+a" and "test+b" have separate locks and do not interact with each other.
|
||||
|
||||
//If starting without filename parameter, check if the stream is already active.
|
||||
//If yes, don't activate again to prevent duplicate inputs.
|
||||
//It's still possible a duplicate starts anyway, this is caught in the inputs initializer.
|
||||
//Note: this uses the _whole_ stream name, including + (if any).
|
||||
//This means "test+a" and "test+b" have separate locks and do not interact with each other.
|
||||
if (!filename.size()){
|
||||
IPC::semaphore playerLock(std::string("/lock_" + streamname).c_str(), O_CREAT | O_RDWR, ACCESSPERMS, 1);
|
||||
if (!playerLock.tryWait()) {
|
||||
playerLock.close();
|
||||
DEBUG_MSG(DLVL_MEDIUM, "Stream %s already active - not activating again", streamname.c_str());
|
||||
configLock.post();//unlock the config semaphore
|
||||
return true;
|
||||
}
|
||||
playerLock.post();
|
||||
playerLock.close();
|
||||
if (ServConf["streams"][streamname]["source"].asString()[0] == '/') {
|
||||
DEBUG_MSG(DLVL_MEDIUM, "Activating VoD stream %s", streamname.c_str());
|
||||
return getVod(ServConf["streams"][streamname]["source"].asString(), streamname);
|
||||
} else {
|
||||
DEBUG_MSG(DLVL_MEDIUM, "Activating live stream %s", streamname.c_str());
|
||||
return getLive(streamname);
|
||||
filename = stream_cfg.getMember("source").asString();
|
||||
}
|
||||
|
||||
|
||||
std::string player_bin;
|
||||
bool selected = false;
|
||||
long long int curPrio = -1;
|
||||
//check in curConf for capabilities-inputs-<naam>-priority/source_match
|
||||
DTSC::Scan inputs = config.getMember("capabilities").getMember("inputs");
|
||||
DTSC::Scan input;
|
||||
unsigned int input_size = inputs.getSize();
|
||||
for (unsigned int i = 0; i < input_size; ++i){
|
||||
input = inputs.getIndice(i);
|
||||
|
||||
//if match voor current stream && priority is hoger dan wat we al hebben
|
||||
if (curPrio < input.getMember("priority").asInt()){
|
||||
std::string source = input.getMember("source_match").asString();
|
||||
std::string front = source.substr(0,source.find('*'));
|
||||
std::string back = source.substr(source.find('*')+1);
|
||||
DEBUG_MSG(DLVL_MEDIUM, "Checking input %s: %s (%s)", inputs.getIndiceName(i).c_str(), input.getMember("name").asString().c_str(), source.c_str());
|
||||
|
||||
if (filename.substr(0,front.size()) == front && filename.substr(filename.size()-back.size()) == back){
|
||||
player_bin = Util::getMyPath() + "MistIn" + input.getMember("name").asString();
|
||||
curPrio = input.getMember("priority").asInt();
|
||||
selected = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
DEBUG_MSG(DLVL_ERROR, "Stream not found: %s", streamname.c_str());
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!selected){
|
||||
configLock.post();//unlock the config semaphore
|
||||
FAIL_MSG("No compatible input found for stream %s: %s", streamname.c_str(), filename.c_str());
|
||||
return false;
|
||||
}
|
||||
|
||||
/// Create a stream on the system.
|
||||
/// Filters the streamname, removing invalid characters and
|
||||
/// converting all letters to lowercase.
|
||||
/// If a '?' character is found, everything following that character is deleted.
|
||||
Socket::Server Util::Stream::makeLive(std::string streamname) {
|
||||
sanitizeName(streamname);
|
||||
std::string loc = getTmpFolder() + "stream_" + streamname;
|
||||
//create and return the Socket::Server
|
||||
return Socket::Server(loc);
|
||||
//copy the neccessary arguments to separate storage so we can unlock the config semaphore safely
|
||||
std::map<std::string, std::string> str_args;
|
||||
//check required parameters
|
||||
DTSC::Scan required = input.getMember("required");
|
||||
unsigned int req_size = required.getSize();
|
||||
for (unsigned int i = 0; i < req_size; ++i){
|
||||
std::string opt = required.getIndiceName(i);
|
||||
if (!stream_cfg.getMember(opt)){
|
||||
configLock.post();//unlock the config semaphore
|
||||
FAIL_MSG("Required parameter %s for stream %s missing", opt.c_str(), streamname.c_str());
|
||||
return false;
|
||||
}
|
||||
str_args[required.getIndice(i).getMember("option").asString()] = stream_cfg.getMember(opt).asString();
|
||||
}
|
||||
//check optional parameters
|
||||
DTSC::Scan optional = input.getMember("optional");
|
||||
unsigned int opt_size = optional.getSize();
|
||||
for (unsigned int i = 0; i < opt_size; ++i){
|
||||
std::string opt = optional.getIndiceName(i);
|
||||
if (stream_cfg.getMember(opt)){
|
||||
str_args[optional.getIndice(i).getMember("option").asString()] = stream_cfg.getMember(opt).asString();
|
||||
}
|
||||
}
|
||||
|
||||
//finally, unlock the config semaphore
|
||||
configLock.post();
|
||||
|
||||
INFO_MSG("Starting %s -p -s %s %s", player_bin.c_str(), streamname.c_str(), filename.c_str());
|
||||
char * argv[30] = {(char *)player_bin.c_str(), (char *)"-s", (char *)streamname.c_str(), (char *)filename.c_str()};
|
||||
int argNum = 3;
|
||||
std::string debugLvl;
|
||||
if (Util::Config::printDebugLevel != DEBUG && !str_args.count("--debug")){
|
||||
debugLvl = JSON::Value((long long)Util::Config::printDebugLevel).asString();
|
||||
argv[++argNum] = (char *)"--debug";
|
||||
argv[++argNum] = (char *)debugLvl.c_str();
|
||||
}
|
||||
for (std::map<std::string, std::string>::iterator it = str_args.begin(); it != str_args.end(); ++it){
|
||||
argv[++argNum] = (char *)it->first.c_str();
|
||||
argv[++argNum] = (char *)it->second.c_str();
|
||||
}
|
||||
argv[++argNum] = (char *)0;
|
||||
|
||||
int pid = 1;
|
||||
if (forkFirst){
|
||||
pid = fork();
|
||||
if (pid == -1) {
|
||||
FAIL_MSG("Forking process for stream %s failed: %s", streamname.c_str(), strerror(errno));
|
||||
return false;
|
||||
}
|
||||
}
|
||||
if (pid == 0){
|
||||
execvp(argv[0], argv);
|
||||
FAIL_MSG("Starting process %s for stream %s failed: %s", argv[0], streamname.c_str(), strerror(errno));
|
||||
_exit(42);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue