| /********** |
| 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 <http://www.gnu.org/copyleft/lesser.html>.) |
| |
| 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 program that converts a H.264 (Elementary Stream) video file into sequence of |
| // HLS (HTTP Live Streaming) segments, plus a ".m3u8" file that can be accessed via a web browser. |
| // main program |
| |
| #include "liveMedia.hh" |
| #include "BasicUsageEnvironment.hh" |
| |
| #define OUR_HLS_SEGMENTATION_DURATION 6 |
| #define OUR_HLS_FILENAME_PREFIX "hlsTest" |
| char const* inputFileName = "in.264"; |
| FILE* ourM3U8Fid = NULL; |
| |
| void segmentationCallback(void* clientData, char const* segmentFileName, double segmentDuration); // forward |
| void afterPlaying(void* clientData); // forward |
| |
| UsageEnvironment* env; |
| |
| int main(int argc, char** argv) { |
| // Begin by setting up our usage environment: |
| TaskScheduler* scheduler = BasicTaskScheduler::createNew(); |
| env = BasicUsageEnvironment::createNew(*scheduler); |
| |
| // Open the input file as a 'byte-stream file source': |
| FramedSource* inputSource = ByteStreamFileSource::createNew(*env, inputFileName); |
| if (inputSource == NULL) { |
| *env << "Unable to open file \"" << inputFileName |
| << "\" as a byte-stream file source\n"; |
| exit(1); |
| } |
| |
| // Create a 'framer' filter for this file source, to generate presentation times for each NAL unit: |
| H264VideoStreamFramer* framer |
| = H264VideoStreamFramer::createNew(*env, inputSource, |
| True/*includeStartCodeInOutput*/, |
| True/*insertAccessUnitDelimiters*/); |
| |
| // Then create a filter that packs the H.264 video data into a Transport Stream: |
| MPEG2TransportStreamFromESSource* tsFrames = MPEG2TransportStreamFromESSource::createNew(*env); |
| tsFrames->addNewVideoSource(framer, 5/*mpegVersion: H.264*/); |
| |
| // Create a 'HLS Segmenter' as the media sink: |
| MediaSink* outputSink |
| = HLSSegmenter::createNew(*env, OUR_HLS_SEGMENTATION_DURATION, OUR_HLS_FILENAME_PREFIX, |
| segmentationCallback); |
| |
| // Finally, start playing: |
| *env << "Beginning to read...\n"; |
| outputSink->startPlaying(*tsFrames, afterPlaying, NULL); |
| |
| env->taskScheduler().doEventLoop(); // does not return |
| |
| return 0; // only to prevent compiler warning |
| } |
| |
| void segmentationCallback(void* /*clientData*/, |
| char const* segmentFileName, double segmentDuration) { |
| if (ourM3U8Fid == NULL) { |
| // Open our ".m3u8" file for output, and write the prefix: |
| char* ourM3U8FileName = new char[strlen(OUR_HLS_FILENAME_PREFIX) + 5/*strlen(".m3u8")*/ + 1]; |
| sprintf(ourM3U8FileName, "%s.m3u8", OUR_HLS_FILENAME_PREFIX); |
| ourM3U8Fid = fopen(ourM3U8FileName, "wb"); |
| |
| fprintf(ourM3U8Fid, |
| "#EXTM3U\n" |
| "#EXT-X-VERSION:3\n" |
| "#EXT-X-INDEPENDENT-SEGMENTS\n" |
| "#EXT-X-TARGETDURATION:%u\n" |
| "#EXT-X-MEDIA-SEQUENCE:0\n", |
| OUR_HLS_SEGMENTATION_DURATION); |
| } |
| |
| // Update our ".m3u8" file with information about this most recent segment: |
| fprintf(ourM3U8Fid, |
| "#EXTINF:%f,\n" |
| "%s\n", |
| segmentDuration, |
| segmentFileName); |
| |
| fprintf(stderr, "Wrote segment \"%s\" (duration: %f seconds)\n", segmentFileName, segmentDuration); |
| } |
| |
| void afterPlaying(void* /*clientData*/) { |
| *env << "...Done reading\n"; |
| |
| // Complete and close our ".m3u8" file: |
| fprintf(ourM3U8Fid, "#EXT-X-ENDLIST\n"); |
| |
| fprintf(stderr, "Wrote %s.m3u8\n", OUR_HLS_FILENAME_PREFIX); |
| exit(0); |
| } |