428 lines
14 KiB
C++
428 lines
14 KiB
C++
#include "input_ebml.h"
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#include <mist/defines.h>
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#include <mist/ebml.h>
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#include <mist/bitfields.h>
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namespace Mist{
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InputEBML::InputEBML(Util::Config *cfg) : Input(cfg){
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capa["name"] = "EBML";
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capa["desc"] = "Enables MKV and WebM input";
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capa["source_match"].append("/*.mkv");
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capa["source_match"].append("/*.mka");
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capa["source_match"].append("/*.mk3d");
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capa["source_match"].append("/*.mks");
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capa["source_match"].append("/*.webm");
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capa["priority"] = 9ll;
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capa["codecs"].append("H264");
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capa["codecs"].append("HEVC");
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capa["codecs"].append("VP8");
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capa["codecs"].append("VP9");
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capa["codecs"].append("opus");
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capa["codecs"].append("vorbis");
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capa["codecs"].append("theora");
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capa["codecs"].append("AAC");
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capa["codecs"].append("PCM");
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capa["codecs"].append("ALAW");
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capa["codecs"].append("ULAW");
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capa["codecs"].append("MP2");
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capa["codecs"].append("MPEG2");
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capa["codecs"].append("MP3");
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capa["codecs"].append("AC3");
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capa["codecs"].append("FLOAT");
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lastClusterBPos = 0;
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lastClusterTime = 0;
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bufferedPacks = 0;
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}
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bool InputEBML::checkArguments(){
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if (config->getString("input") == "-"){
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std::cerr << "Input from stdin not yet supported" << std::endl;
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return false;
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}
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if (!config->getString("streamname").size()){
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if (config->getString("output") == "-"){
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std::cerr << "Output to stdout not yet supported" << std::endl;
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return false;
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}
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}else{
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if (config->getString("output") != "-"){
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std::cerr << "File output in player mode not supported" << std::endl;
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return false;
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}
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}
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return true;
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}
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bool InputEBML::preRun(){
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// open File
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inFile = fopen(config->getString("input").c_str(), "r");
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if (!inFile){return false;}
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return true;
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}
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bool InputEBML::readElement(){
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ptr.size() = 0;
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readingMinimal = true;
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uint32_t needed = EBML::Element::needBytes(ptr, ptr.size(), readingMinimal);
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while (ptr.size() < needed){
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if (!ptr.allocate(needed)){return false;}
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if (!fread(ptr + ptr.size(), needed - ptr.size(), 1, inFile)){
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FAIL_MSG("Could not read more data!");
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return false;
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}
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ptr.size() = needed;
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needed = EBML::Element::needBytes(ptr, ptr.size(), readingMinimal);
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if (ptr.size() >= needed){
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// Make sure TrackEntry types are read whole
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if (readingMinimal && EBML::Element(ptr).getID() == EBML::EID_TRACKENTRY){
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readingMinimal = false;
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needed = EBML::Element::needBytes(ptr, ptr.size(), readingMinimal);
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}
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}
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}
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EBML::Element E(ptr);
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if (E.getID() == EBML::EID_CLUSTER){lastClusterBPos = Util::ftell(inFile);}
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if (E.getID() == EBML::EID_TIMECODE){lastClusterTime = E.getValUInt();}
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return true;
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}
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bool InputEBML::readExistingHeader(){
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if (!Input::readExistingHeader()){return false;}
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for (std::map<unsigned int, DTSC::Track>::iterator it = myMeta.tracks.begin();
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it != myMeta.tracks.end(); ++it){
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if (it->second.codec == "PCMLE"){
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it->second.codec = "PCM";
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swapEndianness.insert(it->first);
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}
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}
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return true;
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}
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bool InputEBML::readHeader(){
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if (!inFile){return false;}
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// Create header file from file
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uint64_t bench = Util::getMicros();
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while (readElement()){
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EBML::Element E(ptr, readingMinimal);
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if (E.getID() == EBML::EID_TRACKENTRY){
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EBML::Element tmpElem = E.findChild(EBML::EID_TRACKNUMBER);
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if (!tmpElem){
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ERROR_MSG("Track without track number encountered, ignoring");
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continue;
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}
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uint64_t trackNo = tmpElem.getValUInt();
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tmpElem = E.findChild(EBML::EID_CODECID);
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if (!tmpElem){
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ERROR_MSG("Track without codec id encountered, ignoring");
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continue;
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}
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std::string codec = tmpElem.getValString(), trueCodec, trueType, lang, init;
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if (codec == "V_MPEG4/ISO/AVC"){
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trueCodec = "H264";
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trueType = "video";
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tmpElem = E.findChild(EBML::EID_CODECPRIVATE);
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if (tmpElem){init = tmpElem.getValString();}
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}
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if (codec == "V_MPEGH/ISO/HEVC"){
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trueCodec = "HEVC";
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trueType = "video";
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tmpElem = E.findChild(EBML::EID_CODECPRIVATE);
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if (tmpElem){init = tmpElem.getValString();}
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}
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if (codec == "V_VP9"){
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trueCodec = "VP9";
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trueType = "video";
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}
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if (codec == "V_VP8"){
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trueCodec = "VP8";
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trueType = "video";
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}
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if (codec == "A_OPUS"){
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trueCodec = "opus";
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trueType = "audio";
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tmpElem = E.findChild(EBML::EID_CODECPRIVATE);
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if (tmpElem){init = tmpElem.getValString();}
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}
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if (codec == "A_VORBIS"){
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trueCodec = "vorbis";
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trueType = "audio";
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tmpElem = E.findChild(EBML::EID_CODECPRIVATE);
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if (tmpElem){init = tmpElem.getValString();}
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}
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if (codec == "V_THEORA"){
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trueCodec = "theora";
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trueType = "video";
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tmpElem = E.findChild(EBML::EID_CODECPRIVATE);
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if (tmpElem){init = tmpElem.getValString();}
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}
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if (codec == "A_AAC"){
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trueCodec = "AAC";
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trueType = "audio";
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tmpElem = E.findChild(EBML::EID_CODECPRIVATE);
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if (tmpElem){init = tmpElem.getValString();}
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}
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if (codec == "A_PCM/INT/BIG"){
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trueCodec = "PCM";
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trueType = "audio";
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}
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if (codec == "A_PCM/INT/LIT"){
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trueCodec = "PCMLE";
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trueType = "audio";
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}
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if (codec == "A_AC3"){
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trueCodec = "AC3";
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trueType = "audio";
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}
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if (codec == "A_MPEG/L3"){
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trueCodec = "MP3";
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trueType = "audio";
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}
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if (codec == "A_MPEG/L2"){
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trueCodec = "MP2";
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trueType = "audio";
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}
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if (codec == "V_MPEG2"){
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trueCodec = "MPEG2";
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trueType = "video";
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}
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if (codec == "A_PCM/FLOAT/IEEE"){
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trueCodec = "FLOAT";
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trueType = "audio";
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}
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if (codec == "A_MS/ACM"){
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tmpElem = E.findChild(EBML::EID_CODECPRIVATE);
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if (tmpElem){
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std::string WAVEFORMATEX = tmpElem.getValString();
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unsigned int formatTag = Bit::btohs_le(WAVEFORMATEX.data());
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switch (formatTag){
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case 3:
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trueCodec = "FLOAT";
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trueType = "audio";
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break;
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case 6:
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trueCodec = "ALAW";
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trueType = "audio";
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break;
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case 7:
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trueCodec = "ULAW";
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trueType = "audio";
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break;
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case 85:
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trueCodec = "MP3";
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trueType = "audio";
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break;
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default:
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ERROR_MSG("Unimplemented A_MS/ACM formatTag: %u", formatTag);
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break;
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}
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}
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}
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if (!trueCodec.size()){
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WARN_MSG("Unrecognised codec id %s ignoring", codec.c_str());
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continue;
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}
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tmpElem = E.findChild(EBML::EID_LANGUAGE);
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if (tmpElem){lang = tmpElem.getValString();}
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DTSC::Track &Trk = myMeta.tracks[trackNo];
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Trk.trackID = trackNo;
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Trk.lang = lang;
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Trk.codec = trueCodec;
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Trk.type = trueType;
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Trk.init = init;
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if (Trk.type == "video"){
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tmpElem = E.findChild(EBML::EID_PIXELWIDTH);
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Trk.width = tmpElem ? tmpElem.getValUInt() : 0;
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tmpElem = E.findChild(EBML::EID_PIXELHEIGHT);
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Trk.height = tmpElem ? tmpElem.getValUInt() : 0;
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Trk.fpks = 0;
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}
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if (Trk.type == "audio"){
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tmpElem = E.findChild(EBML::EID_CHANNELS);
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Trk.channels = tmpElem ? tmpElem.getValUInt() : 1;
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tmpElem = E.findChild(EBML::EID_BITDEPTH);
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Trk.size = tmpElem ? tmpElem.getValUInt() : 0;
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tmpElem = E.findChild(EBML::EID_SAMPLINGFREQUENCY);
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Trk.rate = tmpElem ? (int)tmpElem.getValFloat() : 8000;
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}
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INFO_MSG("Detected track: %s", Trk.getIdentifier().c_str());
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}
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if (E.getType() == EBML::ELEM_BLOCK){
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EBML::Block B(ptr);
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uint64_t tNum = B.getTrackNum();
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uint64_t newTime = lastClusterTime + B.getTimecode();
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trackPredictor &TP = packBuf[tNum];
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DTSC::Track &Trk = myMeta.tracks[tNum];
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bool isVideo = (Trk.type == "video");
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for (uint64_t frameNo = 0; frameNo < B.getFrameCount(); ++frameNo){
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if (frameNo){
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if (Trk.codec == "AAC"){
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newTime += 1000000 / Trk.rate;//assume ~1000 samples per frame
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}else{
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ERROR_MSG("Unknown frame duration for codec %s - timestamps WILL be wrong!", Trk.codec.c_str());
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}
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}
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uint32_t frameSize = B.getFrameSize(frameNo);
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if (frameSize){
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TP.add(newTime, 0, tNum, frameSize, lastClusterBPos,
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B.isKeyframe() && isVideo);
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}
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}
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while (TP.hasPackets()){
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packetData &C = TP.getPacketData(isVideo);
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myMeta.update(C.time, C.offset, C.track, C.dsize, C.bpos, C.key);
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TP.remove();
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}
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}
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}
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if (packBuf.size()){
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for (std::map<uint64_t, trackPredictor>::iterator it = packBuf.begin(); it != packBuf.end();
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++it){
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trackPredictor &TP = it->second;
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while (TP.hasPackets(true)){
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packetData &C = TP.getPacketData(myMeta.tracks[it->first].type == "video");
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myMeta.update(C.time, C.offset, C.track, C.dsize, C.bpos, C.key);
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TP.remove();
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}
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}
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}
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bench = Util::getMicros(bench);
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INFO_MSG("Header generated in %llu ms", bench / 1000);
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packBuf.clear();
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bufferedPacks = 0;
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myMeta.toFile(config->getString("input") + ".dtsh");
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for (std::map<unsigned int, DTSC::Track>::iterator it = myMeta.tracks.begin();
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it != myMeta.tracks.end(); ++it){
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if (it->second.codec == "PCMLE"){
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it->second.codec = "PCM";
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swapEndianness.insert(it->first);
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}
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}
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return true;
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}
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void InputEBML::fillPacket(packetData &C){
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if (swapEndianness.count(C.track)){
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switch (myMeta.tracks[C.track].size){
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case 16:{
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char *ptr = C.ptr;
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uint32_t ptrSize = C.dsize;
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for (uint32_t i = 0; i < ptrSize; i += 2){
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char tmpchar = ptr[i];
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ptr[i] = ptr[i + 1];
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ptr[i + 1] = tmpchar;
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}
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}break;
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case 24:{
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char *ptr = C.ptr;
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uint32_t ptrSize = C.dsize;
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for (uint32_t i = 0; i < ptrSize; i += 3){
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char tmpchar = ptr[i];
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ptr[i] = ptr[i + 2];
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ptr[i + 2] = tmpchar;
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}
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}break;
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case 32:{
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char *ptr = C.ptr;
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uint32_t ptrSize = C.dsize;
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for (uint32_t i = 0; i < ptrSize; i += 4){
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char tmpchar = ptr[i];
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ptr[i] = ptr[i + 3];
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ptr[i + 3] = tmpchar;
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tmpchar = ptr[i + 1];
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ptr[i + 1] = ptr[i + 2];
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ptr[i + 2] = tmpchar;
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}
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}break;
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}
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}
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thisPacket.genericFill(C.time, C.offset, C.track, C.ptr, C.dsize, C.bpos, C.key);
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}
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void InputEBML::getNext(bool smart){
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// Make sure we empty our buffer first
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if (bufferedPacks && packBuf.size()){
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for (std::map<uint64_t, trackPredictor>::iterator it = packBuf.begin();
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it != packBuf.end(); ++it){
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trackPredictor &TP = it->second;
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if (TP.hasPackets()){
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packetData &C = TP.getPacketData(myMeta.tracks[it->first].type == "video");
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fillPacket(C);
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TP.remove();
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--bufferedPacks;
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return;
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}
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}
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}
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EBML::Block B;
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do{
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if (!readElement()){
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// Make sure we empty our buffer first
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if (bufferedPacks && packBuf.size()){
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for (std::map<uint64_t, trackPredictor>::iterator it = packBuf.begin();
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it != packBuf.end(); ++it){
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trackPredictor &TP = it->second;
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if (TP.hasPackets(true)){
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packetData &C = TP.getPacketData(myMeta.tracks[it->first].type == "video");
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fillPacket(C);
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TP.remove();
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--bufferedPacks;
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return;
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}
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}
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}
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// No more buffer? Set to empty
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thisPacket.null();
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return;
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}
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B = EBML::Block(ptr);
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}while (!B || B.getType() != EBML::ELEM_BLOCK || !selectedTracks.count(B.getTrackNum()));
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uint64_t tNum = B.getTrackNum();
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uint64_t newTime = lastClusterTime + B.getTimecode();
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trackPredictor &TP = packBuf[tNum];
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DTSC::Track & Trk = myMeta.tracks[tNum];
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bool isVideo = (Trk.type == "video");
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for (uint64_t frameNo = 0; frameNo < B.getFrameCount(); ++frameNo){
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if (frameNo){
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if (Trk.codec == "AAC"){
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newTime += 1000000 / Trk.rate;//assume ~1000 samples per frame
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}else{
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ERROR_MSG("Unknown frame duration for codec %s - timestamps WILL be wrong!", Trk.codec.c_str());
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}
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}
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uint32_t frameSize = B.getFrameSize(frameNo);
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if (frameSize){
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TP.add(newTime, 0, tNum, frameSize, lastClusterBPos,
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B.isKeyframe() && isVideo, (void *)B.getFrameData(frameNo));
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++bufferedPacks;
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}
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}
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if (TP.hasPackets()){
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packetData &C = TP.getPacketData(isVideo);
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fillPacket(C);
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TP.remove();
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--bufferedPacks;
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}else{
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// We didn't set thisPacket yet. Read another.
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// Recursing is fine, this can only happen a few times in a row.
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getNext(smart);
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}
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}
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void InputEBML::seek(int seekTime){
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packBuf.clear();
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bufferedPacks = 0;
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DTSC::Track Trk = myMeta.tracks[getMainSelectedTrack()];
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uint64_t seekPos = Trk.keys[0].getBpos();
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for (unsigned int i = 0; i < Trk.keys.size(); i++){
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if (Trk.keys[i].getTime() > seekTime){break;}
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seekPos = Trk.keys[i].getBpos();
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}
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Util::fseek(inFile, seekPos, SEEK_SET);
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}
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}// namespace Mist
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