/********** This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. (See .) This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA **********/ // Copyright (c) 1996-2020, Live Networks, Inc. All rights reserved // A subclass of "RTSPServer" that creates "ServerMediaSession"s on demand, // based on whether or not the specified stream name exists as a file // Implementation #include "DynamicRTSPServer.hh" #include #include DynamicRTSPServer* DynamicRTSPServer::createNew(UsageEnvironment& env, Port ourPort, UserAuthenticationDatabase* authDatabase, unsigned reclamationTestSeconds) { int ourSocket = setUpOurSocket(env, ourPort); if (ourSocket == -1) return NULL; return new DynamicRTSPServer(env, ourSocket, ourPort, authDatabase, reclamationTestSeconds); } DynamicRTSPServer::DynamicRTSPServer(UsageEnvironment& env, int ourSocket, Port ourPort, UserAuthenticationDatabase* authDatabase, unsigned reclamationTestSeconds) : RTSPServer(env, ourSocket, ourPort, authDatabase, reclamationTestSeconds) { } DynamicRTSPServer::~DynamicRTSPServer() { } static ServerMediaSession* createNewSMS(UsageEnvironment& env, char const* fileName, FILE* fid); // forward ServerMediaSession* DynamicRTSPServer ::lookupServerMediaSession(char const* streamName, Boolean isFirstLookupInSession) { // First, check whether the specified "streamName" exists as a local file: FILE* fid = fopen(streamName, "rb"); Boolean const fileExists = fid != NULL; // Next, check whether we already have a "ServerMediaSession" for this file: ServerMediaSession* sms = RTSPServer::lookupServerMediaSession(streamName); Boolean const smsExists = sms != NULL; // Handle the four possibilities for "fileExists" and "smsExists": if (!fileExists) { if (smsExists) { // "sms" was created for a file that no longer exists. Remove it: removeServerMediaSession(sms); sms = NULL; } return NULL; } else { if (smsExists && isFirstLookupInSession) { // Remove the existing "ServerMediaSession" and create a new one, in case the underlying // file has changed in some way: removeServerMediaSession(sms); sms = NULL; } if (sms == NULL) { sms = createNewSMS(envir(), streamName, fid); addServerMediaSession(sms); } fclose(fid); return sms; } } // Special code for handling Matroska files: struct MatroskaDemuxCreationState { MatroskaFileServerDemux* demux; char watchVariable; }; static void onMatroskaDemuxCreation(MatroskaFileServerDemux* newDemux, void* clientData) { MatroskaDemuxCreationState* creationState = (MatroskaDemuxCreationState*)clientData; creationState->demux = newDemux; creationState->watchVariable = 1; } // END Special code for handling Matroska files: // Special code for handling Ogg files: struct OggDemuxCreationState { OggFileServerDemux* demux; char watchVariable; }; static void onOggDemuxCreation(OggFileServerDemux* newDemux, void* clientData) { OggDemuxCreationState* creationState = (OggDemuxCreationState*)clientData; creationState->demux = newDemux; creationState->watchVariable = 1; } // END Special code for handling Ogg files: #define NEW_SMS(description) do {\ char const* descStr = description\ ", streamed by the LIVE555 Media Server";\ sms = ServerMediaSession::createNew(env, fileName, fileName, descStr);\ } while(0) static ServerMediaSession* createNewSMS(UsageEnvironment& env, char const* fileName, FILE* /*fid*/) { // Use the file name extension to determine the type of "ServerMediaSession": char const* extension = strrchr(fileName, '.'); if (extension == NULL) return NULL; ServerMediaSession* sms = NULL; Boolean const reuseSource = False; if (strcmp(extension, ".aac") == 0) { // Assumed to be an AAC Audio (ADTS format) file: NEW_SMS("AAC Audio"); sms->addSubsession(ADTSAudioFileServerMediaSubsession::createNew(env, fileName, reuseSource)); } else if (strcmp(extension, ".amr") == 0) { // Assumed to be an AMR Audio file: NEW_SMS("AMR Audio"); sms->addSubsession(AMRAudioFileServerMediaSubsession::createNew(env, fileName, reuseSource)); } else if (strcmp(extension, ".ac3") == 0) { // Assumed to be an AC-3 Audio file: NEW_SMS("AC-3 Audio"); sms->addSubsession(AC3AudioFileServerMediaSubsession::createNew(env, fileName, reuseSource)); } else if (strcmp(extension, ".m4e") == 0) { // Assumed to be a MPEG-4 Video Elementary Stream file: NEW_SMS("MPEG-4 Video"); sms->addSubsession(MPEG4VideoFileServerMediaSubsession::createNew(env, fileName, reuseSource)); } else if (strcmp(extension, ".264") == 0) { // Assumed to be a H.264 Video Elementary Stream file: NEW_SMS("H.264 Video"); OutPacketBuffer::maxSize = 100000; // allow for some possibly large H.264 frames sms->addSubsession(H264VideoFileServerMediaSubsession::createNew(env, fileName, reuseSource)); } else if (strcmp(extension, ".265") == 0) { // Assumed to be a H.265 Video Elementary Stream file: NEW_SMS("H.265 Video"); OutPacketBuffer::maxSize = 100000; // allow for some possibly large H.265 frames sms->addSubsession(H265VideoFileServerMediaSubsession::createNew(env, fileName, reuseSource)); } else if (strcmp(extension, ".mp3") == 0) { // Assumed to be a MPEG-1 or 2 Audio file: NEW_SMS("MPEG-1 or 2 Audio"); // To stream using 'ADUs' rather than raw MP3 frames, uncomment the following: //#define STREAM_USING_ADUS 1 // To also reorder ADUs before streaming, uncomment the following: //#define INTERLEAVE_ADUS 1 // (For more information about ADUs and interleaving, // see ) Boolean useADUs = False; Interleaving* interleaving = NULL; #ifdef STREAM_USING_ADUS useADUs = True; #ifdef INTERLEAVE_ADUS unsigned char interleaveCycle[] = {0,2,1,3}; // or choose your own... unsigned const interleaveCycleSize = (sizeof interleaveCycle)/(sizeof (unsigned char)); interleaving = new Interleaving(interleaveCycleSize, interleaveCycle); #endif #endif sms->addSubsession(MP3AudioFileServerMediaSubsession::createNew(env, fileName, reuseSource, useADUs, interleaving)); } else if (strcmp(extension, ".mpg") == 0) { // Assumed to be a MPEG-1 or 2 Program Stream (audio+video) file: NEW_SMS("MPEG-1 or 2 Program Stream"); MPEG1or2FileServerDemux* demux = MPEG1or2FileServerDemux::createNew(env, fileName, reuseSource); sms->addSubsession(demux->newVideoServerMediaSubsession()); sms->addSubsession(demux->newAudioServerMediaSubsession()); } else if (strcmp(extension, ".vob") == 0) { // Assumed to be a VOB (MPEG-2 Program Stream, with AC-3 audio) file: NEW_SMS("VOB (MPEG-2 video with AC-3 audio)"); MPEG1or2FileServerDemux* demux = MPEG1or2FileServerDemux::createNew(env, fileName, reuseSource); sms->addSubsession(demux->newVideoServerMediaSubsession()); sms->addSubsession(demux->newAC3AudioServerMediaSubsession()); } else if (strcmp(extension, ".ts") == 0) { // Assumed to be a MPEG Transport Stream file: // Use an index file name that's the same as the TS file name, except with ".tsx": unsigned indexFileNameLen = strlen(fileName) + 2; // allow for trailing "x\0" char* indexFileName = new char[indexFileNameLen]; sprintf(indexFileName, "%sx", fileName); NEW_SMS("MPEG Transport Stream"); sms->addSubsession(MPEG2TransportFileServerMediaSubsession::createNew(env, fileName, indexFileName, reuseSource)); delete[] indexFileName; } else if (strcmp(extension, ".wav") == 0) { // Assumed to be a WAV Audio file: NEW_SMS("WAV Audio Stream"); // To convert 16-bit PCM data to 8-bit u-law, prior to streaming, // change the following to True: Boolean convertToULaw = False; sms->addSubsession(WAVAudioFileServerMediaSubsession::createNew(env, fileName, reuseSource, convertToULaw)); } else if (strcmp(extension, ".dv") == 0) { // Assumed to be a DV Video file // First, make sure that the RTPSinks' buffers will be large enough to handle the huge size of DV frames (as big as 288000). OutPacketBuffer::maxSize = 300000; NEW_SMS("DV Video"); sms->addSubsession(DVVideoFileServerMediaSubsession::createNew(env, fileName, reuseSource)); } else if (strcmp(extension, ".mkv") == 0 || strcmp(extension, ".webm") == 0) { // Assumed to be a Matroska file (note that WebM ('.webm') files are also Matroska files) OutPacketBuffer::maxSize = 300000; // allow for some possibly large VP8 or VP9 frames NEW_SMS("Matroska video+audio+(optional)subtitles"); // Create a Matroska file server demultiplexor for the specified file. // (We enter the event loop to wait for this to complete.) MatroskaDemuxCreationState creationState; creationState.watchVariable = 0; MatroskaFileServerDemux::createNew(env, fileName, onMatroskaDemuxCreation, &creationState); env.taskScheduler().doEventLoop(&creationState.watchVariable); ServerMediaSubsession* smss; while ((smss = creationState.demux->newServerMediaSubsession()) != NULL) { sms->addSubsession(smss); } } else if (strcmp(extension, ".ogg") == 0 || strcmp(extension, ".ogv") == 0 || strcmp(extension, ".opus") == 0) { // Assumed to be an Ogg file NEW_SMS("Ogg video and/or audio"); // Create a Ogg file server demultiplexor for the specified file. // (We enter the event loop to wait for this to complete.) OggDemuxCreationState creationState; creationState.watchVariable = 0; OggFileServerDemux::createNew(env, fileName, onOggDemuxCreation, &creationState); env.taskScheduler().doEventLoop(&creationState.watchVariable); ServerMediaSubsession* smss; while ((smss = creationState.demux->newServerMediaSubsession()) != NULL) { sms->addSubsession(smss); } } return sms; }