781 lines
28 KiB
C++
781 lines
28 KiB
C++
#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <semaphore.h>
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#include <iterator> //std::distance
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#include <mist/stream.h>
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#include <mist/defines.h>
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#include <mist/http_parser.h>
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#include <mist/timing.h>
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#include "output.h"
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namespace Mist {
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Util::Config * Output::config = NULL;
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JSON::Value Output::capa = JSON::Value();
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int getDTSCLen(char * mapped, long long int offset){
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return ntohl(((int*)(mapped + offset))[1]);
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}
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unsigned long long getDTSCTime(char * mapped, long long int offset){
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char * timePoint = mapped + offset + 12;
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return ((long long int)timePoint[0] << 56) | ((long long int)timePoint[1] << 48) | ((long long int)timePoint[2] << 40) | ((long long int)timePoint[3] << 32) | ((long long int)timePoint[4] << 24) | ((long long int)timePoint[5] << 16) | ((long long int)timePoint[6] << 8) | timePoint[7];
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}
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void Output::init(Util::Config * cfg){
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capa["optional"]["debug"]["name"] = "debug";
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capa["optional"]["debug"]["help"] = "The debug level at which messages need to be printed.";
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capa["optional"]["debug"]["option"] = "--debug";
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capa["optional"]["debug"]["type"] = "debug";
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}
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Output::Output(Socket::Connection & conn) : myConn(conn) {
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firstTime = 0;
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crc = getpid();
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parseData = false;
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wantRequest = true;
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sought = false;
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isInitialized = false;
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isBlocking = false;
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lastStats = 0;
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maxSkipAhead = 7500;
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minSkipAhead = 5000;
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realTime = 1000;
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if (myConn){
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setBlocking(true);
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}else{
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DEBUG_MSG(DLVL_WARN, "Warning: MistOut created with closed socket!");
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}
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sentHeader = false;
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}
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void Output::setBlocking(bool blocking){
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isBlocking = blocking;
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myConn.setBlocking(isBlocking);
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}
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Output::~Output(){}
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void Output::updateMeta(){
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//read metadata from page to myMeta variable
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IPC::semaphore liveMeta(std::string("liveMeta@" + streamName).c_str(), O_CREAT | O_RDWR, ACCESSPERMS, 1);
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bool lock = myMeta.live;
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if (lock){
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liveMeta.wait();
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}
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if (streamIndex.mapped){
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DTSC::Packet tmpMeta(streamIndex.mapped, streamIndex.len, true);
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if (tmpMeta.getVersion()){
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myMeta.reinit(tmpMeta);
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}
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}
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if (lock){
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liveMeta.post();
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}
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}
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/// Called when stream initialization has failed.
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/// The standard implementation will set isInitialized to false and close the client connection,
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/// thus causing the process to exit cleanly.
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void Output::onFail(){
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isInitialized = false;
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myConn.close();
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}
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void Output::negotiateWithBuffer(int tid){
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//Check whether the track exists
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if (!meta_out.tracks.count(tid)) {
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return;
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}
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//Do not re-negotiate already confirmed tracks
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if (trackMap.count(tid)){
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return;
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}
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//Do not re-negotiate if already at maximum for push tracks
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if (trackMap.size() >= 5){
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DEBUG_MSG(DLVL_FAIL, "Failed to negotiate for incoming track %d, already at maximum number of tracks", tid);
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return;
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}
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char * tmp = playerConn.getData();
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if (!tmp){
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DEBUG_MSG(DLVL_FAIL, "Failed to negotiate for incoming track %d, there does not seem to be a connection with the buffer", tid);
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return;
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}
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int bufConnOffset = trackMap.size();
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DEBUG_MSG(DLVL_DEVEL, "Starting negotiation for incoming track %d, at offset %d", tid, bufConnOffset);
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memset(tmp + 6 * bufConnOffset, 0, 4);
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tmp[6 * bufConnOffset] = 0x80;
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tmp[6 * bufConnOffset + 4] = 0xFF;
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tmp[6 * bufConnOffset + 5] = 0xFF;
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playerConn.keepAlive();
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unsigned int newTid = 0x80000000u;
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while (newTid == 0x80000000u){
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Util::sleep(100);
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newTid = ((long)(tmp[6 * bufConnOffset]) << 24) | ((long)(tmp[6 * bufConnOffset + 1]) << 16) | ((long)(tmp[6 * bufConnOffset + 2]) << 8) | tmp[6 * bufConnOffset + 3];
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}
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DEBUG_MSG(DLVL_VERYHIGH, "Track %d temporarily mapped to %d", tid, newTid);
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char pageName[100];
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sprintf(pageName, "liveStream_%s%d", streamName.c_str(), newTid);
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IPC::sharedPage metaPage(pageName, 8 * 1024 * 1024);
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DTSC::Meta tmpMeta = meta_out;
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tmpMeta.tracks.clear();
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tmpMeta.tracks[newTid] = meta_out.tracks[tid];
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tmpMeta.tracks[newTid].trackID = newTid;
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JSON::Value tmpVal = tmpMeta.toJSON();
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std::string tmpStr = tmpVal.toNetPacked();
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memcpy(metaPage.mapped, tmpStr.data(), tmpStr.size());
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DEBUG_MSG(DLVL_VERYHIGH, "Temporary metadata written for incoming track %d, handling as track %d", tid, newTid);
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unsigned short firstPage = 0xFFFF;
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unsigned int finalTid = newTid;
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while (firstPage == 0xFFFF){
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DEBUG_MSG(DLVL_VERYHIGH, "Re-checking at offset %d", bufConnOffset);
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Util::sleep(100);
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finalTid = ((long)(tmp[6 * bufConnOffset]) << 24) | ((long)(tmp[6 * bufConnOffset + 1]) << 16) | ((long)(tmp[6 * bufConnOffset + 2]) << 8) | tmp[6 * bufConnOffset + 3];
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firstPage = ((long)(tmp[6 * bufConnOffset + 4]) << 8) | tmp[6 * bufConnOffset + 5];
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if (finalTid == 0xFFFFFFFF){
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WARN_MSG("Buffer has declined incoming track %d", tid);
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return;
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}
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}
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//Reinitialize so we make sure we got the right values here
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finalTid = ((long)(tmp[6 * bufConnOffset]) << 24) | ((long)(tmp[6 * bufConnOffset + 1]) << 16) | ((long)(tmp[6 * bufConnOffset + 2]) << 8) | tmp[6 * bufConnOffset + 3];
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firstPage = ((long)(tmp[6 * bufConnOffset + 4]) << 8) | tmp[6 * bufConnOffset + 5];
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if (finalTid == 0xFFFFFFFF){
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WARN_MSG("Buffer has declined incoming track %d", tid);
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memset(tmp + 6 * bufConnOffset, 0, 6);
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return;
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}
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INFO_MSG("Buffer has indicated that incoming track %d should start writing on track %d, page %d", tid, finalTid, firstPage);
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memset(pageName, 0, 100);
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sprintf(pageName, "%s%d_%d", streamName.c_str(), finalTid, firstPage);
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curPages[finalTid].init(pageName, DEFAULT_DATA_PAGE_SIZE);
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trackMap[tid] = finalTid;
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bookKeeping[finalTid] = DTSCPageData();
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}
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void Output::negotiatePushTracks() {
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int i = 0;
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for (std::map<unsigned int, DTSC::Track>::iterator it = meta_out.tracks.begin(); it != meta_out.tracks.end() && i < 5; it++){
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negotiateWithBuffer(it->first);
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i++;
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}
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}
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void Output::bufferPacket(JSON::Value & pack){
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if (!pack["trackid"].asInt()){return;}
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if (myMeta.tracks[pack["trackid"].asInt()].type != "video"){
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if ((pack["time"].asInt() - bookKeeping[trackMap[pack["trackid"].asInt()]].lastKeyTime) >= 5000){
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pack["keyframe"] = 1LL;
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bookKeeping[trackMap[pack["trackid"].asInt()]].lastKeyTime = pack["time"].asInt();
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}
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}
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if (pack["trackid"].asInt() == 0){
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return;
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}
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//Re-negotiate declined tracks on each keyframe, to compensate for "broken" tracks
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if (!trackMap.count(pack["trackid"].asInt()) || !trackMap[pack["trackid"].asInt()]){
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if (pack.isMember("keyframe") && pack["keyframe"]){
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negotiateWithBuffer(pack["trackid"].asInt());
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}
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}
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if (!trackMap.count(pack["trackid"].asInt()) || !trackMap[pack["trackid"].asInt()]){
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//declined track;
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return;
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}
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pack["trackid"] = trackMap[pack["trackid"].asInt()];
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long long unsigned int tNum = pack["trackid"].asInt();
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if (!bookKeeping.count(tNum)){
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return;
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}
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int pageNum = bookKeeping[tNum].pageNum;
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std::string tmp = pack.toNetPacked();
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if (bookKeeping[tNum].curOffset > FLIP_DATA_PAGE_SIZE && pack.isMember("keyframe") && pack["keyframe"]){
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//open new page
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char nextPage[100];
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sprintf(nextPage, "%s%llu_%d", streamName.c_str(), tNum, bookKeeping[tNum].pageNum + bookKeeping[tNum].keyNum);
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INFO_MSG("Continuing track %llu on page %d, from pos %llu", tNum, bookKeeping[tNum].pageNum + bookKeeping[tNum].keyNum, bookKeeping[tNum].curOffset);
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curPages[tNum].init(nextPage, DEFAULT_DATA_PAGE_SIZE);
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bookKeeping[tNum].pageNum += bookKeeping[tNum].keyNum;
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bookKeeping[tNum].keyNum = 0;
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bookKeeping[tNum].curOffset = 0;
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}
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if (!curPages[tNum].mapped){
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//prevent page init failures from crashing everything.
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myConn.close();//closes the connection to trigger a clean shutdown
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return;
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}
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if (bookKeeping[tNum].curOffset + tmp.size() < (unsigned long long)curPages[tNum].len){
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bookKeeping[tNum].keyNum += (pack.isMember("keyframe") && pack["keyframe"]);
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memcpy(curPages[tNum].mapped + bookKeeping[tNum].curOffset, tmp.data(), tmp.size());
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bookKeeping[tNum].curOffset += tmp.size();
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}else{
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bookKeeping[tNum].curOffset += tmp.size();
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DEBUG_MSG(DLVL_WARN, "Can't buffer frame on page %d, track %llu, time %lld, keyNum %d, offset %llu", pageNum, tNum, pack["time"].asInt(), bookKeeping[tNum].pageNum + bookKeeping[tNum].keyNum, bookKeeping[tNum].curOffset);
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}
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}
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void Output::initialize(){
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if (isInitialized){
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return;
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}
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if (streamIndex.mapped){
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return;
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}
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if (streamName.size() < 1){
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return; //abort - no stream to initialize...
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}
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if (!Util::startInput(streamName)){
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DEBUG_MSG(DLVL_FAIL, "Opening stream disallowed - aborting initalization");
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onFail();
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return;
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}
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isInitialized = true;
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streamIndex.init(streamName, DEFAULT_META_PAGE_SIZE);
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if (!streamIndex.mapped){
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DEBUG_MSG(DLVL_FAIL, "Could not connect to server for %s\n", streamName.c_str());
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onFail();
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return;
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}
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statsPage = IPC::sharedClient("statistics", STAT_EX_SIZE, true);
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playerConn = IPC::sharedClient(streamName + "_users", 30, true);
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updateMeta();
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selectDefaultTracks();
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sought = false;
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}
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void Output::selectDefaultTracks(){
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if (!isInitialized){
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initialize();
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return;
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}
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//check which tracks don't actually exist
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std::set<long unsigned int> toRemove;
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for (std::set<long unsigned int>::iterator it = selectedTracks.begin(); it != selectedTracks.end(); it++){
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if (!myMeta.tracks.count(*it)){
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toRemove.insert(*it);
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}
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}
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//remove those from selectedtracks
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for (std::set<long unsigned int>::iterator it = toRemove.begin(); it != toRemove.end(); it++){
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selectedTracks.erase(*it);
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}
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//loop through all codec combinations, count max simultaneous active
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unsigned int bestSoFar = 0;
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unsigned int bestSoFarCount = 0;
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unsigned int index = 0;
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for (JSON::ArrIter it = capa["codecs"].ArrBegin(); it != capa["codecs"].ArrEnd(); it++){
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unsigned int genCounter = 0;
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unsigned int selCounter = 0;
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if ((*it).size() > 0){
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for (JSON::ArrIter itb = (*it).ArrBegin(); itb != (*it).ArrEnd(); itb++){
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if ((*itb).size() > 0){
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bool found = false;
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for (JSON::ArrIter itc = (*itb).ArrBegin(); itc != (*itb).ArrEnd() && !found; itc++){
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for (std::set<long unsigned int>::iterator itd = selectedTracks.begin(); itd != selectedTracks.end(); itd++){
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if (myMeta.tracks[*itd].codec == (*itc).asStringRef()){
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selCounter++;
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found = true;
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break;
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}
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}
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if (!found){
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for (std::map<unsigned int,DTSC::Track>::iterator trit = myMeta.tracks.begin(); trit != myMeta.tracks.end(); trit++){
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if (trit->second.codec == (*itc).asStringRef()){
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genCounter++;
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found = true;
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break;
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}
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}
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}
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}
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}
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}
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if (selCounter == selectedTracks.size()){
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if (selCounter + genCounter > bestSoFarCount){
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bestSoFarCount = selCounter + genCounter;
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bestSoFar = index;
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DEBUG_MSG(DLVL_HIGH, "Match (%u/%u): %s", selCounter, selCounter+genCounter, (*it).toString().c_str());
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}
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}else{
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DEBUG_MSG(DLVL_VERYHIGH, "Not a match for currently selected tracks: %s", (*it).toString().c_str());
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}
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}
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index++;
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}
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DEBUG_MSG(DLVL_MEDIUM, "Trying to fill: %s", capa["codecs"][bestSoFar].toString().c_str());
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//try to fill as many codecs simultaneously as possible
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if (capa["codecs"][bestSoFar].size() > 0){
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for (JSON::ArrIter itb = capa["codecs"][bestSoFar].ArrBegin(); itb != capa["codecs"][bestSoFar].ArrEnd(); itb++){
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if ((*itb).size() && myMeta.tracks.size()){
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bool found = false;
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for (JSON::ArrIter itc = (*itb).ArrBegin(); itc != (*itb).ArrEnd() && !found; itc++){
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if (selectedTracks.size()){
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for (std::set<long unsigned int>::iterator itd = selectedTracks.begin(); itd != selectedTracks.end(); itd++){
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if (myMeta.tracks[*itd].codec == (*itc).asStringRef()){
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found = true;
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break;
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}
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}
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}
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if (!found){
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for (std::map<unsigned int,DTSC::Track>::iterator trit = myMeta.tracks.begin(); trit != myMeta.tracks.end(); trit++){
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if (trit->second.codec == (*itc).asStringRef()){
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selectedTracks.insert(trit->first);
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found = true;
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break;
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}
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}
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}
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}
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}
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}
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}
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if (Util::Config::printDebugLevel >= DLVL_MEDIUM){
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//print the selected tracks
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std::stringstream selected;
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if (selectedTracks.size()){
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for (std::set<long unsigned int>::iterator it = selectedTracks.begin(); it != selectedTracks.end(); it++){
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if (it != selectedTracks.begin()){
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selected << ", ";
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}
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selected << (*it);
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}
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}
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DEBUG_MSG(DLVL_MEDIUM, "Selected tracks: %s (%lu)", selected.str().c_str(), selectedTracks.size());
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}
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}
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/// Clears the buffer, sets parseData to false, and generally makes not very much happen at all.
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void Output::stop(){
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buffer.clear();
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parseData = false;
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}
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unsigned int Output::getKeyForTime(long unsigned int trackId, long long timeStamp){
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DTSC::Track & trk = myMeta.tracks[trackId];
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if (!trk.keys.size()){
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return 0;
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}
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unsigned int keyNo = trk.keys.begin()->getNumber();
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unsigned int partCount = 0;
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std::deque<DTSC::Key>::iterator it;
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for (it = trk.keys.begin(); it != trk.keys.end() && it->getTime() <= timeStamp; it++){
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keyNo = it->getNumber();
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partCount += it->getParts();
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}
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//if the time is before the next keyframe but after the last part, correctly seek to next keyframe
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if (partCount && it != trk.keys.end() && timeStamp > it->getTime() - trk.parts[partCount-1].getDuration()){
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++keyNo;
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}
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return keyNo;
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}
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int Output::pageNumForKey(long unsigned int trackId, long long int keyNum){
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if (!indexPages.count(trackId)){
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char id[100];
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sprintf(id, "%s%lu", streamName.c_str(), trackId);
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indexPages[trackId].init(id, 8 * 1024);
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}
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char * mpd = indexPages[trackId].mapped;
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int len = indexPages[trackId].len / 8;
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for (int i = 0; i < len; i++){
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long amountKey = ntohl((((long long int*)mpd)[i]) & 0xFFFFFFFF);
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if (amountKey == 0){continue;}
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long tmpKey = ntohl(((((long long int*)mpd)[i]) >> 32) & 0xFFFFFFFF);
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if (tmpKey <= keyNum && ((tmpKey?tmpKey:1) + amountKey) > keyNum){
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return tmpKey;
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}
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}
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return -1;
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}
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void Output::loadPageForKey(long unsigned int trackId, long long int keyNum){
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if (myMeta.vod && keyNum > myMeta.tracks[trackId].keys.rbegin()->getNumber()){
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curPages.erase(trackId);
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currKeyOpen.erase(trackId);
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return;
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}
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DEBUG_MSG(DLVL_HIGH, "Loading track %lu, containing key %lld", trackId, keyNum);
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unsigned int timeout = 0;
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int pageNum = pageNumForKey(trackId, keyNum);
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while (pageNum == -1){
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if (!timeout){
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DEBUG_MSG(DLVL_DEVEL, "Requesting/waiting for page that has key %lu:%lld...", trackId, keyNum);
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}
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if (timeout++ > 100){
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DEBUG_MSG(DLVL_FAIL, "Timeout while waiting for requested page. Aborting.");
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curPages.erase(trackId);
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currKeyOpen.erase(trackId);
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return;
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}
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if (keyNum){
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nxtKeyNum[trackId] = keyNum-1;
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}else{
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nxtKeyNum[trackId] = 0;
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}
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stats();
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Util::sleep(100);
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pageNum = pageNumForKey(trackId, keyNum);
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}
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if (keyNum){
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nxtKeyNum[trackId] = keyNum-1;
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}else{
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nxtKeyNum[trackId] = 0;
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}
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stats();
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nxtKeyNum[trackId] = pageNum;
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if (currKeyOpen.count(trackId) && currKeyOpen[trackId] == (unsigned int)pageNum){
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return;
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}
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char id[100];
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snprintf(id, 100, "%s%lu_%d", streamName.c_str(), trackId, pageNum);
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curPages[trackId].init(id, DEFAULT_DATA_PAGE_SIZE);
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if (!(curPages[trackId].mapped)){
|
|
DEBUG_MSG(DLVL_FAIL, "Initializing page %s failed", curPages[trackId].name.c_str());
|
|
return;
|
|
}
|
|
currKeyOpen[trackId] = pageNum;
|
|
}
|
|
|
|
/// Prepares all tracks from selectedTracks for seeking to the specified ms position.
|
|
void Output::seek(unsigned long long pos){
|
|
sought = true;
|
|
firstTime = Util::getMS() - pos;
|
|
if (!isInitialized){
|
|
initialize();
|
|
}
|
|
buffer.clear();
|
|
currentPacket.null();
|
|
updateMeta();
|
|
DEBUG_MSG(DLVL_MEDIUM, "Seeking to %llums", pos);
|
|
for (std::set<long unsigned int>::iterator it = selectedTracks.begin(); it != selectedTracks.end(); it++){
|
|
seek(*it, pos);
|
|
}
|
|
}
|
|
|
|
bool Output::seek(unsigned int tid, unsigned long long pos, bool getNextKey){
|
|
loadPageForKey(tid, getKeyForTime(tid, pos) + (getNextKey?1:0));
|
|
if (!curPages.count(tid) || !curPages[tid].mapped){
|
|
DEBUG_MSG(DLVL_DEVEL, "Aborting seek to %llums in track %u, not available.", pos, tid);
|
|
return false;
|
|
}
|
|
sortedPageInfo tmp;
|
|
tmp.tid = tid;
|
|
tmp.offset = 0;
|
|
DTSC::Packet tmpPack;
|
|
tmpPack.reInit(curPages[tid].mapped + tmp.offset, 0, true);
|
|
tmp.time = tmpPack.getTime();
|
|
char * mpd = curPages[tid].mapped;
|
|
while ((long long)tmp.time < pos && tmpPack){
|
|
tmp.offset += tmpPack.getDataLen();
|
|
tmpPack.reInit(mpd + tmp.offset, 0, true);
|
|
tmp.time = tmpPack.getTime();
|
|
}
|
|
if (tmpPack){
|
|
buffer.insert(tmp);
|
|
return true;
|
|
}else{
|
|
//don't print anything for empty packets - not sign of corruption, just unfinished stream.
|
|
if (curPages[tid].mapped[tmp.offset] != 0){
|
|
DEBUG_MSG(DLVL_FAIL, "Noes! Couldn't find packet on track %d because of some kind of corruption error or somesuch.", tid);
|
|
}else{
|
|
DEBUG_MSG(DLVL_FAIL, "Track %d no data (key %u @ %u) - waiting...", tid, getKeyForTime(tid, pos) + (getNextKey?1:0), tmp.offset);
|
|
unsigned int i = 0;
|
|
while (curPages[tid].mapped[tmp.offset] == 0 && ++i < 42){
|
|
Util::wait(100);
|
|
}
|
|
if (curPages[tid].mapped[tmp.offset] == 0){
|
|
DEBUG_MSG(DLVL_FAIL, "Track %d no data (key %u) - timeout", tid, getKeyForTime(tid, pos) + (getNextKey?1:0));
|
|
}else{
|
|
return seek(tid, pos, getNextKey);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void Output::requestHandler(){
|
|
static bool firstData = true;//only the first time, we call onRequest if there's data buffered already.
|
|
if ((firstData && myConn.Received().size()) || myConn.spool()){
|
|
firstData = false;
|
|
DEBUG_MSG(DLVL_DONTEVEN, "onRequest");
|
|
onRequest();
|
|
}else{
|
|
if (!isBlocking && !parseData){
|
|
Util::sleep(500);
|
|
}
|
|
}
|
|
}
|
|
|
|
int Output::run() {
|
|
DEBUG_MSG(DLVL_MEDIUM, "MistOut client handler started");
|
|
while (myConn.connected() && (wantRequest || parseData)){
|
|
stats();
|
|
if (wantRequest){
|
|
requestHandler();
|
|
}
|
|
if (parseData){
|
|
if (!isInitialized){
|
|
initialize();
|
|
}
|
|
if ( !sentHeader){
|
|
DEBUG_MSG(DLVL_DONTEVEN, "sendHeader");
|
|
sendHeader();
|
|
}
|
|
prepareNext();
|
|
if (currentPacket){
|
|
sendNext();
|
|
}else{
|
|
if (!onFinish()){
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
DEBUG_MSG(DLVL_MEDIUM, "MistOut client handler shutting down: %s, %s, %s", myConn.connected() ? "conn_active" : "conn_closed", wantRequest ? "want_request" : "no_want_request", parseData ? "parsing_data" : "not_parsing_data");
|
|
stats();
|
|
playerConn.finish();
|
|
statsPage.finish();
|
|
myConn.close();
|
|
return 0;
|
|
}
|
|
|
|
/// Returns the ID of the main selected track, or 0 if no tracks are selected.
|
|
/// The main track is the first video track, if any, and otherwise the first other track.
|
|
long unsigned int Output::getMainSelectedTrack(){
|
|
if (!selectedTracks.size()){
|
|
return 0;
|
|
}
|
|
for (std::set<long unsigned int>::iterator it = selectedTracks.begin(); it != selectedTracks.end(); it++){
|
|
if (myMeta.tracks[*it].type == "video"){
|
|
return *it;
|
|
}
|
|
}
|
|
return *(selectedTracks.begin());
|
|
}
|
|
|
|
void Output::prepareNext(){
|
|
static int nonVideoCount = 0;
|
|
if (!sought){
|
|
if (myMeta.live){
|
|
long unsigned int mainTrack = getMainSelectedTrack();
|
|
unsigned long long seekPos = myMeta.tracks[mainTrack].keys.begin()->getTime();
|
|
if (seekPos < 5000){
|
|
seekPos = 0;
|
|
}
|
|
seek(seekPos);
|
|
}else{
|
|
seek(0);
|
|
}
|
|
}
|
|
static unsigned int emptyCount = 0;
|
|
if (!buffer.size()){
|
|
currentPacket.null();
|
|
DEBUG_MSG(DLVL_DEVEL, "Buffer completely played out");
|
|
onFinish();
|
|
return;
|
|
}
|
|
sortedPageInfo nxt = *(buffer.begin());
|
|
buffer.erase(buffer.begin());
|
|
|
|
DEBUG_MSG(DLVL_DONTEVEN, "Loading track %u (next=%lu), %llu ms", nxt.tid, nxtKeyNum[nxt.tid], nxt.time);
|
|
|
|
if (nxt.offset >= curPages[nxt.tid].len){
|
|
loadPageForKey(nxt.tid, ++nxtKeyNum[nxt.tid]);
|
|
nxt.offset = 0;
|
|
if (curPages.count(nxt.tid) && curPages[nxt.tid].mapped){
|
|
if (getDTSCTime(curPages[nxt.tid].mapped, nxt.offset) < nxt.time){
|
|
DEBUG_MSG(DLVL_DEVEL, "Time going backwards in track %u - dropping track.", nxt.tid);
|
|
}else{
|
|
nxt.time = getDTSCTime(curPages[nxt.tid].mapped, nxt.offset);
|
|
buffer.insert(nxt);
|
|
}
|
|
prepareNext();
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (!curPages.count(nxt.tid) || !curPages[nxt.tid].mapped){
|
|
//mapping failure? Drop this track and go to next.
|
|
//not an error - usually means end of stream.
|
|
DEBUG_MSG(DLVL_DEVEL, "Track %u no page - dropping track.", nxt.tid);
|
|
prepareNext();
|
|
return;
|
|
}
|
|
|
|
//have we arrived at the end of the memory page? (4 zeroes mark the end)
|
|
if (!memcmp(curPages[nxt.tid].mapped + nxt.offset, "\000\000\000\000", 4)){
|
|
//if we don't currently know where we are, we're lost. We should drop the track.
|
|
if (!nxt.time){
|
|
DEBUG_MSG(DLVL_DEVEL, "Timeless empty packet on track %u - dropping track.", nxt.tid);
|
|
prepareNext();
|
|
return;
|
|
}
|
|
//if this is a live stream, we might have just reached the live point.
|
|
//check where the next key is
|
|
int nextPage = pageNumForKey(nxt.tid, nxtKeyNum[nxt.tid]+1);
|
|
//are we live, and the next key hasn't shown up on another page? then we're waiting.
|
|
if (myMeta.live && currKeyOpen.count(nxt.tid) && (currKeyOpen[nxt.tid] == (unsigned int)nextPage || nextPage == -1)){
|
|
if (myMeta && ++emptyCount < 42){
|
|
//we're waiting for new data. Simply retry.
|
|
buffer.insert(nxt);
|
|
}else{
|
|
//after ~10 seconds, give up and drop the track.
|
|
DEBUG_MSG(DLVL_DEVEL, "Empty packet on track %u @ key %lu (next=%d) - could not reload, dropping track.", nxt.tid, nxtKeyNum[nxt.tid]+1, nextPage);
|
|
}
|
|
//keep updating the metadata at 250ms intervals while waiting for more data
|
|
Util::sleep(250);
|
|
updateMeta();
|
|
}else{
|
|
//if we're not live, we've simply reached the end of the page. Load the next key.
|
|
loadPageForKey(nxt.tid, ++nxtKeyNum[nxt.tid]);
|
|
nxt.offset = 0;
|
|
if (curPages.count(nxt.tid) && curPages[nxt.tid].mapped){
|
|
unsigned long long nextTime = getDTSCTime(curPages[nxt.tid].mapped, nxt.offset);
|
|
if (nextTime && nextTime < nxt.time){
|
|
DEBUG_MSG(DLVL_DEVEL, "Time going backwards in track %u - dropping track.", nxt.tid);
|
|
}else{
|
|
if (nextTime){
|
|
nxt.time = nextTime;
|
|
}
|
|
buffer.insert(nxt);
|
|
DEBUG_MSG(DLVL_MEDIUM, "Next page for track %u starts at %llu.", nxt.tid, nxt.time);
|
|
}
|
|
}else{
|
|
DEBUG_MSG(DLVL_DEVEL, "Could not load next memory page for track %u - dropping track.", nxt.tid);
|
|
}
|
|
}
|
|
prepareNext();
|
|
return;
|
|
}
|
|
currentPacket.reInit(curPages[nxt.tid].mapped + nxt.offset, 0, true);
|
|
if (currentPacket){
|
|
if (currentPacket.getTime() != nxt.time && nxt.time){
|
|
DEBUG_MSG(DLVL_MEDIUM, "ACTUALLY Loaded track %ld (next=%lu), %llu ms", currentPacket.getTrackId(), nxtKeyNum[nxt.tid], currentPacket.getTime());
|
|
}
|
|
if ((myMeta.tracks[nxt.tid].type == "video" && currentPacket.getFlag("keyframe")) || (++nonVideoCount % 30 == 0)){
|
|
if (myMeta.live){
|
|
updateMeta();
|
|
}
|
|
nxtKeyNum[nxt.tid] = getKeyForTime(nxt.tid, currentPacket.getTime());
|
|
DEBUG_MSG(DLVL_VERYHIGH, "Track %u @ %llums = key %lu", nxt.tid, currentPacket.getTime(), nxtKeyNum[nxt.tid]);
|
|
}
|
|
emptyCount = 0;
|
|
}
|
|
nxt.offset += currentPacket.getDataLen();
|
|
if (realTime){
|
|
while (nxt.time > (Util::getMS() - firstTime + maxSkipAhead)*1000/realTime) {
|
|
Util::sleep(nxt.time - (Util::getMS() - firstTime + minSkipAhead)*1000/realTime);
|
|
}
|
|
}
|
|
if (curPages[nxt.tid]){
|
|
if (nxt.offset < curPages[nxt.tid].len){
|
|
unsigned long long nextTime = getDTSCTime(curPages[nxt.tid].mapped, nxt.offset);
|
|
if (nextTime){
|
|
nxt.time = nextTime;
|
|
}else{
|
|
++nxt.time;
|
|
}
|
|
}
|
|
buffer.insert(nxt);
|
|
}
|
|
stats();
|
|
}
|
|
|
|
void Output::stats(){
|
|
static bool setHost = true;
|
|
if (!isInitialized){
|
|
return;
|
|
}
|
|
if (statsPage.getData()){
|
|
unsigned long long int now = Util::epoch();
|
|
if (now != lastStats){
|
|
lastStats = now;
|
|
IPC::statExchange tmpEx(statsPage.getData());
|
|
tmpEx.now(now);
|
|
if (setHost){
|
|
tmpEx.host(myConn.getBinHost());
|
|
setHost = false;
|
|
}
|
|
tmpEx.crc(crc);
|
|
tmpEx.streamName(streamName);
|
|
tmpEx.connector(capa["name"].asString());
|
|
tmpEx.up(myConn.dataUp());
|
|
tmpEx.down(myConn.dataDown());
|
|
tmpEx.time(now - myConn.connTime());
|
|
if (currentPacket){
|
|
tmpEx.lastSecond(currentPacket.getTime());
|
|
}else{
|
|
tmpEx.lastSecond(0);
|
|
}
|
|
statsPage.keepAlive();
|
|
}
|
|
}
|
|
int tNum = 0;
|
|
if (!playerConn.getData()){
|
|
playerConn = IPC::sharedClient(streamName + "_users", 30, true);
|
|
if (!playerConn.getData()){
|
|
DEBUG_MSG(DLVL_WARN, "Player connection failure - aborting output");
|
|
myConn.close();
|
|
return;
|
|
}
|
|
}
|
|
if (trackMap.size()){
|
|
for (std::map<int, int>::iterator it = trackMap.begin(); it != trackMap.end() && tNum < 5; it++){
|
|
unsigned int tId = it->second;
|
|
char * thisData = playerConn.getData() + (6 * tNum);
|
|
thisData[0] = ((tId >> 24) & 0xFF);
|
|
thisData[1] = ((tId >> 16) & 0xFF);
|
|
thisData[2] = ((tId >> 8) & 0xFF);
|
|
thisData[3] = ((tId) & 0xFF);
|
|
thisData[4] = 0xFF;
|
|
thisData[5] = 0xFF;
|
|
tNum ++;
|
|
}
|
|
}else{
|
|
for (std::set<unsigned long>::iterator it = selectedTracks.begin(); it != selectedTracks.end() && tNum < 5; it++){
|
|
unsigned int tId = *it;
|
|
char * thisData = playerConn.getData() + (6 * tNum);
|
|
thisData[0] = ((tId >> 24) & 0xFF);
|
|
thisData[1] = ((tId >> 16) & 0xFF);
|
|
thisData[2] = ((tId >> 8) & 0xFF);
|
|
thisData[3] = ((tId) & 0xFF);
|
|
thisData[4] = ((nxtKeyNum[tId] >> 8) & 0xFF);
|
|
thisData[5] = ((nxtKeyNum[tId]) & 0xFF);
|
|
tNum ++;
|
|
}
|
|
}
|
|
playerConn.keepAlive();
|
|
if (tNum >= 5){
|
|
DEBUG_MSG(DLVL_WARN, "Too many tracks selected, using only first 5");
|
|
}
|
|
}
|
|
|
|
void Output::onRequest(){
|
|
//simply clear the buffer, we don't support any kind of input by default
|
|
myConn.Received().clear();
|
|
wantRequest = false;
|
|
}
|
|
|
|
void Output::sendHeader(){
|
|
//just set the sentHeader bool to true, by default
|
|
sentHeader = true;
|
|
}
|
|
|
|
}
|