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main.cpp
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main.cpp
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/*
* Copyright (C) 2016-2016 peak3d
* http://www.peak3d.de
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program 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 General Public License for more details.
*
* <http://www.gnu.org/licenses/>.
*
*/
#include "main.h"
#include "ADTSReader.h"
#include <bento4/Ap4Utils.h>
#include "TSReader.h"
#include "WebmReader.h"
#include "aes_decrypter.h"
#include "helpers.h"
#include "log.h"
#include "oscompat.h"
#include "parser/DASHTree.h"
#include "parser/HLSTree.h"
#include "parser/SmoothTree.h"
#include "parser/TTML.h"
#include <chrono>
#include <algorithm>
#include <iostream>
#include <math.h>
#include <sstream>
#include <stdio.h>
#include <string.h>
#include <kodi/Filesystem.h>
#include <kodi/General.h>
#include <kodi/addon-instance/VideoCodec.h>
#include <kodi/addon-instance/inputstream/StreamCodec.h>
#if defined(ANDROID)
#include <kodi/platform/android/System.h>
#endif
#ifdef CreateDirectory
#undef CreateDirectory
#endif
#define STREAM_TIME_BASE 1000000
#define SAFE_DELETE(p) \
do \
{ \
delete (p); \
(p) = NULL; \
} while (0)
void Log(const LogLevel loglevel, const char* format, ...)
{
ADDON_LOG addonLevel;
switch (loglevel)
{
case LogLevel::LOGLEVEL_FATAL:
addonLevel = ADDON_LOG::ADDON_LOG_FATAL;
break;
case LogLevel::LOGLEVEL_ERROR:
addonLevel = ADDON_LOG::ADDON_LOG_ERROR;
break;
case LogLevel::LOGLEVEL_WARNING:
addonLevel = ADDON_LOG::ADDON_LOG_WARNING;
break;
case LogLevel::LOGLEVEL_INFO:
addonLevel = ADDON_LOG::ADDON_LOG_INFO;
break;
default:
addonLevel = ADDON_LOG::ADDON_LOG_DEBUG;
}
char buffer[16384];
va_list args;
va_start(args, format);
vsprintf(buffer, format, args);
va_end(args);
kodi::Log(addonLevel, buffer);
}
static const AP4_Track::Type TIDC[adaptive::AdaptiveTree::STREAM_TYPE_COUNT] = {
AP4_Track::TYPE_UNKNOWN, AP4_Track::TYPE_VIDEO, AP4_Track::TYPE_AUDIO,
AP4_Track::TYPE_SUBTITLES};
/*******************************************************
kodi host - interface for decrypter libraries
********************************************************/
class ATTR_DLL_LOCAL KodiHost : public SSD::SSD_HOST
{
public:
#if defined(ANDROID)
virtual void* GetJNIEnv() override { return m_androidSystem.GetJNIEnv(); };
virtual int GetSDKVersion() override { return m_androidSystem.GetSDKVersion(); };
virtual const char* GetClassName() override
{
m_retvalHelper = m_androidSystem.GetClassName();
return m_retvalHelper.c_str();
};
#endif
virtual const char* GetLibraryPath() const override { return m_strLibraryPath.c_str(); };
virtual const char* GetProfilePath() const override { return m_strProfilePath.c_str(); };
virtual void* CURLCreate(const char* strURL) override
{
kodi::vfs::CFile* file = new kodi::vfs::CFile;
if (!file->CURLCreate(strURL))
{
delete file;
return nullptr;
}
return file;
};
virtual bool CURLAddOption(void* file,
CURLOPTIONS opt,
const char* name,
const char* value) override
{
const CURLOptiontype xbmcmap[] = {ADDON_CURL_OPTION_PROTOCOL, ADDON_CURL_OPTION_HEADER};
return static_cast<kodi::vfs::CFile*>(file)->CURLAddOption(xbmcmap[opt], name, value);
}
virtual const char* CURLGetProperty(void* file, CURLPROPERTY prop, const char* name) override
{
const FilePropertyTypes xbmcmap[] = {ADDON_FILE_PROPERTY_RESPONSE_HEADER};
m_strPropertyValue =
static_cast<kodi::vfs::CFile*>(file)->GetPropertyValue(xbmcmap[prop], name);
return m_strPropertyValue.c_str();
}
virtual bool CURLOpen(void* file) override
{
return static_cast<kodi::vfs::CFile*>(file)->CURLOpen(ADDON_READ_NO_CACHE);
};
virtual size_t ReadFile(void* file, void* lpBuf, size_t uiBufSize) override
{
return static_cast<kodi::vfs::CFile*>(file)->Read(lpBuf, uiBufSize);
};
virtual void CloseFile(void* file) override
{
return static_cast<kodi::vfs::CFile*>(file)->Close();
};
virtual bool CreateDir(const char* dir) override { return kodi::vfs::CreateDirectory(dir); };
virtual void Log(LOGLEVEL level, const char* msg) override
{
const ADDON_LOG xbmcmap[] = {ADDON_LOG_DEBUG, ADDON_LOG_INFO, ADDON_LOG_ERROR};
return kodi::Log(xbmcmap[level], msg);
};
void SetLibraryPath(const char* libraryPath)
{
m_strLibraryPath = libraryPath;
const char* pathSep(libraryPath[0] && libraryPath[1] == ':' && isalpha(libraryPath[0]) ? "\\"
: "/");
if (m_strLibraryPath.size() && m_strLibraryPath.back() != pathSep[0])
m_strLibraryPath += pathSep;
}
void SetProfilePath(const std::string& profilePath)
{
m_strProfilePath = profilePath;
const char* pathSep(profilePath[0] && profilePath[1] == ':' && isalpha(profilePath[0]) ? "\\"
: "/");
if (m_strProfilePath.size() && m_strProfilePath.back() != pathSep[0])
m_strProfilePath += pathSep;
//let us make cdm userdata out of the addonpath and share them between addons
m_strProfilePath.resize(
m_strProfilePath.find_last_of(pathSep[0], m_strProfilePath.length() - 2));
m_strProfilePath.resize(
m_strProfilePath.find_last_of(pathSep[0], m_strProfilePath.length() - 1));
m_strProfilePath.resize(
m_strProfilePath.find_last_of(pathSep[0], m_strProfilePath.length() - 1) + 1);
kodi::vfs::CreateDirectory(m_strProfilePath.c_str());
m_strProfilePath += "cdm";
m_strProfilePath += pathSep;
kodi::vfs::CreateDirectory(m_strProfilePath.c_str());
}
virtual bool GetBuffer(void* instance, SSD::SSD_PICTURE& picture) override
{
return instance ? static_cast<kodi::addon::CInstanceVideoCodec*>(instance)->GetFrameBuffer(
*reinterpret_cast<VIDEOCODEC_PICTURE*>(&picture))
: false;
}
virtual void ReleaseBuffer(void* instance, void* buffer) override
{
if (instance)
static_cast<kodi::addon::CInstanceVideoCodec*>(instance)->ReleaseFrameBuffer(buffer);
}
private:
std::string m_strProfilePath, m_strLibraryPath, m_strPropertyValue;
#if defined(ANDROID)
kodi::platform::CInterfaceAndroidSystem m_androidSystem;
std::string m_retvalHelper;
#endif
} * kodihost;
/*******************************************************
Bento4 Streams
********************************************************/
class ATTR_DLL_LOCAL AP4_DASHStream : public AP4_ByteStream
{
public:
// Constructor
AP4_DASHStream(adaptive::AdaptiveStream* stream) : stream_(stream){};
// AP4_ByteStream methods
AP4_Result ReadPartial(void* buffer, AP4_Size bytesToRead, AP4_Size& bytesRead) override
{
bytesRead = stream_->read(buffer, bytesToRead);
return bytesRead > 0 ? AP4_SUCCESS : AP4_ERROR_READ_FAILED;
};
AP4_Result WritePartial(const void* buffer,
AP4_Size bytesToWrite,
AP4_Size& bytesWritten) override
{
/* unimplemented */
return AP4_ERROR_NOT_SUPPORTED;
};
AP4_Result Seek(AP4_Position position) override
{
return stream_->seek(position) ? AP4_SUCCESS : AP4_ERROR_NOT_SUPPORTED;
};
AP4_Result Tell(AP4_Position& position) override
{
position = stream_->tell();
return AP4_SUCCESS;
};
AP4_Result GetSize(AP4_LargeSize& size) override { return AP4_ERROR_NOT_SUPPORTED; };
AP4_Result GetSegmentSize(AP4_LargeSize& size)
{
return stream_->getSize(size) ? AP4_SUCCESS : AP4_ERROR_EOS;
};
// AP4_Referenceable methods
void AddReference() override{};
void Release() override{};
bool waitingForSegment() const { return stream_->waitingForSegment(); }
void FixateInitialization(bool on) { stream_->FixateInitialization(on); }
void SetSegmentFileOffset(uint64_t offset) { stream_->SetSegmentFileOffset(offset); }
protected:
// members
adaptive::AdaptiveStream* stream_;
};
/*******************************************************
Kodi Streams implementation
********************************************************/
bool adaptive::AdaptiveTree::download(const char* url,
const std::map<std::string, std::string>& manifestHeaders,
void* opaque,
bool isManifest)
{
// open the file
kodi::vfs::CFile file;
if (!file.CURLCreate(url))
return false;
file.CURLAddOption(ADDON_CURL_OPTION_PROTOCOL, "seekable", "0");
file.CURLAddOption(ADDON_CURL_OPTION_PROTOCOL, "acceptencoding", "gzip");
for (const auto& entry : manifestHeaders)
{
file.CURLAddOption(ADDON_CURL_OPTION_HEADER, entry.first.c_str(), entry.second.c_str());
}
if (!file.CURLOpen(ADDON_READ_CHUNKED | ADDON_READ_NO_CACHE))
{
kodi::Log(ADDON_LOG_ERROR, "Download failed: %s", url);
return false;
}
effective_url_ = file.GetPropertyValue(ADDON_FILE_PROPERTY_EFFECTIVE_URL, "");
if (isManifest && !PreparePaths(effective_url_))
{
file.Close();
return false;
}
// read the file
static const unsigned int CHUNKSIZE = 16384;
char buf[CHUNKSIZE];
size_t nbRead;
while ((nbRead = file.Read(buf, CHUNKSIZE)) > 0 && ~nbRead && write_data(buf, nbRead, opaque))
;
etag_ = file.GetPropertyValue(ADDON_FILE_PROPERTY_RESPONSE_HEADER, "etag");
last_modified_ = file.GetPropertyValue(ADDON_FILE_PROPERTY_RESPONSE_HEADER, "last-modified");
//download_speed_ = file.GetFileDownloadSpeed();
file.Close();
kodi::Log(ADDON_LOG_DEBUG, "Download finished: %s", effective_url_.c_str());
return nbRead == 0;
}
bool KodiAdaptiveStream::download(const char* url,
const std::map<std::string, std::string>& mediaHeaders,
std::string* lockfreeBuffer)
{
kodi::vfs::CFile file;
// open the file
if (!file.CURLCreate(url))
return false;
file.CURLAddOption(ADDON_CURL_OPTION_PROTOCOL, "seekable", "0");
file.CURLAddOption(ADDON_CURL_OPTION_PROTOCOL, "acceptencoding", "gzip, deflate");
if (mediaHeaders.find("connection") == mediaHeaders.end())
file.CURLAddOption(ADDON_CURL_OPTION_HEADER, "connection", "keep-alive");
file.CURLAddOption(ADDON_CURL_OPTION_PROTOCOL, "failonerror", "false");
for (const auto& entry : mediaHeaders)
{
file.CURLAddOption(ADDON_CURL_OPTION_HEADER, entry.first.c_str(), entry.second.c_str());
}
if (file.CURLOpen(ADDON_READ_CHUNKED | ADDON_READ_NO_CACHE | ADDON_READ_AUDIO_VIDEO))
{
int returnCode = -1;
std::string proto = file.GetPropertyValue(ADDON_FILE_PROPERTY_RESPONSE_PROTOCOL, "");
std::string::size_type posResponseCode = proto.find(' ');
if (posResponseCode != std::string::npos)
returnCode = atoi(proto.c_str() + (posResponseCode + 1));
size_t nbRead = ~0UL;
if (returnCode >= 400)
{
kodi::Log(ADDON_LOG_ERROR, "Download failed with error %d: %s", returnCode, url);
}
else
{
// read the file
char* buf = (char*)malloc(32 * 1024);
size_t nbReadOverall = 0;
bool write_ok = true;
while ((nbRead = file.Read(buf, 32 * 1024)) > 0 && ~nbRead &&
(write_ok = write_data(buf, nbRead, lockfreeBuffer)))
nbReadOverall += nbRead;
free(buf);
if (write_ok)
{
if (!nbReadOverall)
{
kodi::Log(ADDON_LOG_ERROR, "Download doesn't provide any data: %s", url);
return false;
}
double current_download_speed_ = file.GetFileDownloadSpeed();
//Calculate the new downloadspeed to 1MB
static const size_t ref_packet = 1024 * 1024;
if (nbReadOverall >= ref_packet)
chooser_->set_download_speed(current_download_speed_);
else
{
double ratio = (double)nbReadOverall / ref_packet;
chooser_->set_download_speed((chooser_->get_download_speed() * (1.0 - ratio)) +
current_download_speed_ * ratio);
}
kodi::Log(ADDON_LOG_DEBUG,
"Download %s finished, avg speed: %0.2lfbyte/s, current speed: %0.2lfbyte/s", url,
chooser_->get_download_speed(), current_download_speed_);
//pass download speed to
}
else
kodi::Log(ADDON_LOG_DEBUG, "Download %s cancelled", url);
}
file.Close();
return nbRead == 0;
}
return false;
}
bool KodiAdaptiveStream::parseIndexRange(adaptive::AdaptiveTree::Representation* rep,
const std::string& buffer)
{
kodi::Log(ADDON_LOG_DEBUG, "Build segments from SIDX atom...");
AP4_MemoryByteStream byteStream((const AP4_Byte*)(buffer.data()), buffer.size());
adaptive::AdaptiveTree::AdaptationSet* adp(
const_cast<adaptive::AdaptiveTree::AdaptationSet*>(getAdaptationSet()));
if (rep->containerType_ == adaptive::AdaptiveTree::CONTAINERTYPE_WEBM)
{
if (!rep->indexRangeMin_)
return false;
WebmReader reader(&byteStream);
std::vector<WebmReader::CUEPOINT> cuepoints;
reader.GetCuePoints(cuepoints);
if (!cuepoints.empty())
{
adaptive::AdaptiveTree::Segment seg;
rep->timescale_ = 1000;
rep->SetScaling();
rep->segments_.data.reserve(cuepoints.size());
adp->segment_durations_.data.reserve(cuepoints.size());
for (const WebmReader::CUEPOINT& cue : cuepoints)
{
seg.startPTS_ = cue.pts;
seg.range_begin_ = cue.pos_start;
seg.range_end_ = cue.pos_end;
rep->segments_.data.push_back(seg);
if (adp->segment_durations_.data.size() < rep->segments_.data.size())
adp->segment_durations_.data.push_back(static_cast<const uint32_t>(cue.duration));
}
return true;
}
}
if (rep->containerType_ == adaptive::AdaptiveTree::CONTAINERTYPE_MP4)
{
if (!rep->indexRangeMin_)
{
AP4_File f(byteStream, AP4_DefaultAtomFactory::Instance_, true);
AP4_Movie* movie = f.GetMovie();
if (movie == NULL)
{
kodi::Log(ADDON_LOG_ERROR, "No MOOV in stream!");
return false;
}
rep->flags_ |= adaptive::AdaptiveTree::Representation::INITIALIZATION;
rep->initialization_.range_begin_ = 0;
AP4_Position pos;
byteStream.Tell(pos);
rep->initialization_.range_end_ = pos - 1;
}
adaptive::AdaptiveTree::Segment seg;
seg.startPTS_ = 0;
unsigned int numSIDX(1);
do
{
AP4_Atom* atom(NULL);
if (AP4_FAILED(AP4_DefaultAtomFactory::Instance_.CreateAtomFromStream(byteStream, atom)))
{
kodi::Log(ADDON_LOG_ERROR, "Unable to create SIDX from IndexRange bytes");
return false;
}
if (atom->GetType() == AP4_ATOM_TYPE_MOOF)
{
delete atom;
break;
}
else if (atom->GetType() != AP4_ATOM_TYPE_SIDX)
{
delete atom;
continue;
}
AP4_SidxAtom* sidx(AP4_DYNAMIC_CAST(AP4_SidxAtom, atom));
const AP4_Array<AP4_SidxAtom::Reference>& refs(sidx->GetReferences());
if (refs[0].m_ReferenceType == 1)
{
numSIDX = refs.ItemCount();
delete atom;
continue;
}
AP4_Position pos;
byteStream.Tell(pos);
seg.range_end_ = pos + getRepresentation()->indexRangeMin_ + sidx->GetFirstOffset() - 1;
rep->timescale_ = sidx->GetTimeScale();
rep->SetScaling();
for (unsigned int i(0); i < refs.ItemCount(); ++i)
{
seg.range_begin_ = seg.range_end_ + 1;
seg.range_end_ = seg.range_begin_ + refs[i].m_ReferencedSize - 1;
rep->segments_.data.push_back(seg);
if (adp->segment_durations_.data.size() < rep->segments_.data.size())
adp->segment_durations_.data.push_back(refs[i].m_SubsegmentDuration);
seg.startPTS_ += refs[i].m_SubsegmentDuration;
}
delete atom;
--numSIDX;
} while (numSIDX);
return true;
}
return false;
}
/*******************************************************
| CodecHandler
********************************************************/
class ATTR_DLL_LOCAL CodecHandler
{
public:
CodecHandler(AP4_SampleDescription* sd)
: sample_description(sd), naluLengthSize(0), pictureId(0), pictureIdPrev(0xFF){};
virtual ~CodecHandler(){};
virtual void UpdatePPSId(AP4_DataBuffer const&){};
virtual bool GetInformation(kodi::addon::InputstreamInfo& info)
{
AP4_GenericAudioSampleDescription* asd(nullptr);
if (sample_description)
{
if ((asd = dynamic_cast<AP4_GenericAudioSampleDescription*>(sample_description)))
{
if ((!info.GetChannels() && asd->GetChannelCount() != info.GetChannels()) ||
(!info.GetSampleRate() && asd->GetSampleRate() != info.GetSampleRate()) ||
(!info.GetBitsPerSample() && asd->GetSampleSize() != info.GetBitsPerSample()))
{
if (!info.GetChannels())
info.SetChannels(asd->GetChannelCount());
if (!info.GetSampleRate())
info.SetSampleRate(asd->GetSampleRate());
if (!info.GetBitsPerSample())
info.SetBitsPerSample(asd->GetSampleSize());
return true;
}
}
else
{
//Netflix Framerate
AP4_Atom* atom;
AP4_UnknownUuidAtom* nxfr;
static const AP4_UI08 uuid[16] = {0x4e, 0x65, 0x74, 0x66, 0x6c, 0x69, 0x78, 0x46,
0x72, 0x61, 0x6d, 0x65, 0x52, 0x61, 0x74, 0x65};
if ((atom = sample_description->GetDetails().GetChild(static_cast<const AP4_UI08*>(uuid),
0)) &&
(nxfr = dynamic_cast<AP4_UnknownUuidAtom*>(atom)) &&
nxfr->GetData().GetDataSize() == 10)
{
AP4_UI16 fpsRate = nxfr->GetData().GetData()[7] | nxfr->GetData().GetData()[6] << 8;
AP4_UI16 fpsScale = nxfr->GetData().GetData()[9] | nxfr->GetData().GetData()[8] << 8;
if (info.GetFpsScale() != fpsScale || info.GetFpsRate() != fpsRate)
{
info.SetFpsScale(fpsScale);
info.SetFpsRate(fpsRate);
return true;
}
}
}
}
return false;
};
virtual bool ExtraDataToAnnexB() { return false; };
virtual STREAMCODEC_PROFILE GetProfile() { return STREAMCODEC_PROFILE::CodecProfileNotNeeded; };
virtual bool Transform(AP4_UI64 pts, AP4_UI32 duration, AP4_DataBuffer& buf, AP4_UI64 timescale)
{
return false;
};
virtual bool ReadNextSample(AP4_Sample& sample, AP4_DataBuffer& buf) { return false; };
virtual void SetPTSOffset(AP4_UI64 offset){};
virtual bool TimeSeek(AP4_UI64 seekPos) { return true; };
virtual void Reset(){};
AP4_SampleDescription* sample_description;
AP4_DataBuffer extra_data;
AP4_UI08 naluLengthSize;
AP4_UI08 pictureId, pictureIdPrev;
};
/*********************** AVC ************************/
class ATTR_DLL_LOCAL AVCCodecHandler : public CodecHandler
{
public:
AVCCodecHandler(AP4_SampleDescription* sd)
: CodecHandler(sd), countPictureSetIds(0), needSliceInfo(false)
{
unsigned int width(0), height(0);
if (AP4_VideoSampleDescription* video_sample_description =
AP4_DYNAMIC_CAST(AP4_VideoSampleDescription, sample_description))
{
width = video_sample_description->GetWidth();
height = video_sample_description->GetHeight();
}
if (AP4_AvcSampleDescription* avc =
AP4_DYNAMIC_CAST(AP4_AvcSampleDescription, sample_description))
{
extra_data.SetData(avc->GetRawBytes().GetData(), avc->GetRawBytes().GetDataSize());
countPictureSetIds = avc->GetPictureParameters().ItemCount();
naluLengthSize = avc->GetNaluLengthSize();
needSliceInfo = (countPictureSetIds > 1 || !width || !height);
switch (avc->GetProfile())
{
case AP4_AVC_PROFILE_BASELINE:
codecProfile = STREAMCODEC_PROFILE::H264CodecProfileBaseline;
break;
case AP4_AVC_PROFILE_MAIN:
codecProfile = STREAMCODEC_PROFILE::H264CodecProfileMain;
break;
case AP4_AVC_PROFILE_EXTENDED:
codecProfile = STREAMCODEC_PROFILE::H264CodecProfileExtended;
break;
case AP4_AVC_PROFILE_HIGH:
codecProfile = STREAMCODEC_PROFILE::H264CodecProfileHigh;
break;
case AP4_AVC_PROFILE_HIGH_10:
codecProfile = STREAMCODEC_PROFILE::H264CodecProfileHigh10;
break;
case AP4_AVC_PROFILE_HIGH_422:
codecProfile = STREAMCODEC_PROFILE::H264CodecProfileHigh422;
break;
case AP4_AVC_PROFILE_HIGH_444:
codecProfile = STREAMCODEC_PROFILE::H264CodecProfileHigh444Predictive;
break;
default:
codecProfile = STREAMCODEC_PROFILE::CodecProfileUnknown;
break;
}
}
}
virtual bool ExtraDataToAnnexB() override
{
if (AP4_AvcSampleDescription* avc =
AP4_DYNAMIC_CAST(AP4_AvcSampleDescription, sample_description))
{
//calculate the size for annexb
size_t sz(0);
AP4_Array<AP4_DataBuffer>& pps(avc->GetPictureParameters());
for (unsigned int i(0); i < pps.ItemCount(); ++i)
sz += 4 + pps[i].GetDataSize();
AP4_Array<AP4_DataBuffer>& sps(avc->GetSequenceParameters());
for (unsigned int i(0); i < sps.ItemCount(); ++i)
sz += 4 + sps[i].GetDataSize();
extra_data.SetDataSize(sz);
uint8_t* cursor(extra_data.UseData());
for (unsigned int i(0); i < sps.ItemCount(); ++i)
{
cursor[0] = cursor[1] = cursor[2] = 0;
cursor[3] = 1;
memcpy(cursor + 4, sps[i].GetData(), sps[i].GetDataSize());
cursor += sps[i].GetDataSize() + 4;
}
for (unsigned int i(0); i < pps.ItemCount(); ++i)
{
cursor[0] = cursor[1] = cursor[2] = 0;
cursor[3] = 1;
memcpy(cursor + 4, pps[i].GetData(), pps[i].GetDataSize());
cursor += pps[i].GetDataSize() + 4;
}
return true;
}
return false;
}
virtual void UpdatePPSId(AP4_DataBuffer const& buffer) override
{
if (!needSliceInfo)
return;
//Search the Slice header NALU
const AP4_UI08* data(buffer.GetData());
unsigned int data_size(buffer.GetDataSize());
for (; data_size;)
{
// sanity check
if (data_size < naluLengthSize)
break;
// get the next NAL unit
AP4_UI32 nalu_size;
switch (naluLengthSize)
{
case 1:
nalu_size = *data++;
data_size--;
break;
case 2:
nalu_size = AP4_BytesToInt16BE(data);
data += 2;
data_size -= 2;
break;
case 4:
nalu_size = AP4_BytesToInt32BE(data);
data += 4;
data_size -= 4;
break;
default:
data_size = 0;
nalu_size = 1;
break;
}
if (nalu_size > data_size)
break;
// Stop further NALU processing
if (countPictureSetIds < 2)
needSliceInfo = false;
unsigned int nal_unit_type = *data & 0x1F;
if (
//nal_unit_type == AP4_AVC_NAL_UNIT_TYPE_CODED_SLICE_OF_NON_IDR_PICTURE ||
nal_unit_type == AP4_AVC_NAL_UNIT_TYPE_CODED_SLICE_OF_IDR_PICTURE //||
//nal_unit_type == AP4_AVC_NAL_UNIT_TYPE_CODED_SLICE_DATA_PARTITION_A ||
//nal_unit_type == AP4_AVC_NAL_UNIT_TYPE_CODED_SLICE_DATA_PARTITION_B ||
//nal_unit_type == AP4_AVC_NAL_UNIT_TYPE_CODED_SLICE_DATA_PARTITION_C
)
{
AP4_DataBuffer unescaped(data, data_size);
AP4_NalParser::Unescape(unescaped);
AP4_BitReader bits(unescaped.GetData(), unescaped.GetDataSize());
bits.SkipBits(8); // NAL Unit Type
AP4_AvcFrameParser::ReadGolomb(bits); // first_mb_in_slice
AP4_AvcFrameParser::ReadGolomb(bits); // slice_type
pictureId = AP4_AvcFrameParser::ReadGolomb(bits); //picture_set_id
}
// move to the next NAL unit
data += nalu_size;
data_size -= nalu_size;
}
}
virtual bool GetInformation(kodi::addon::InputstreamInfo& info) override
{
if (pictureId == pictureIdPrev)
return false;
pictureIdPrev = pictureId;
if (AP4_AvcSampleDescription* avc =
AP4_DYNAMIC_CAST(AP4_AvcSampleDescription, sample_description))
{
AP4_Array<AP4_DataBuffer>& ppsList(avc->GetPictureParameters());
AP4_AvcPictureParameterSet pps;
for (unsigned int i(0); i < ppsList.ItemCount(); ++i)
{
AP4_AvcFrameParser fp;
if (AP4_SUCCEEDED(fp.ParsePPS(ppsList[i].GetData(),
ppsList[i].GetDataSize(), pps)) &&
pps.pic_parameter_set_id == pictureId)
{
AP4_Array<AP4_DataBuffer>& spsList = avc->GetSequenceParameters();
AP4_AvcSequenceParameterSet sps;
for (unsigned int i(0); i < spsList.ItemCount(); ++i)
{
if (AP4_SUCCEEDED(fp.ParseSPS(spsList[i].GetData(),
spsList[i].GetDataSize(), sps)) &&
sps.seq_parameter_set_id == pps.seq_parameter_set_id)
{
unsigned int width = info.GetWidth();
unsigned int height = info.GetHeight();
unsigned int fps_ticks = info.GetFpsRate();
unsigned int fps_scale = info.GetFpsScale();
float aspect = info.GetAspect();
bool ret = sps.GetInfo(width, height);
ret = sps.GetVUIInfo(fps_ticks, fps_scale, aspect) || ret;
if (ret)
{
info.SetWidth(width);
info.SetHeight(height);
info.SetFpsRate(fps_ticks);
info.SetFpsScale(fps_scale);
info.SetAspect(aspect);
}
return ret;
}
}
break;
}
}
}
return false;
};
virtual STREAMCODEC_PROFILE GetProfile() override { return codecProfile; };
private:
unsigned int countPictureSetIds;
STREAMCODEC_PROFILE codecProfile;
bool needSliceInfo;
};
/*********************** HEVC ************************/
class ATTR_DLL_LOCAL HEVCCodecHandler : public CodecHandler
{
public:
HEVCCodecHandler(AP4_SampleDescription* sd) : CodecHandler(sd)
{
if (AP4_HevcSampleDescription* hevc =
AP4_DYNAMIC_CAST(AP4_HevcSampleDescription, sample_description))
{
extra_data.SetData(hevc->GetRawBytes().GetData(), hevc->GetRawBytes().GetDataSize());
naluLengthSize = hevc->GetNaluLengthSize();
}
}
virtual bool ExtraDataToAnnexB() override
{
if (AP4_HevcSampleDescription* hevc =
AP4_DYNAMIC_CAST(AP4_HevcSampleDescription, sample_description))
{
const AP4_Array<AP4_HvccAtom::Sequence>& sequences = hevc->GetSequences();
if (!sequences.ItemCount())
{
kodi::Log(ADDON_LOG_WARNING, "No available sequences for HEVC codec extra data");
return false;
}
//calculate the size for annexb
size_t sz(0);
for (const AP4_HvccAtom::Sequence *b(&sequences[0]), *e(&sequences[sequences.ItemCount()]);
b != e; ++b)
for (const AP4_DataBuffer *bn(&b->m_Nalus[0]), *en(&b->m_Nalus[b->m_Nalus.ItemCount()]);
bn != en; ++bn)
sz += (4 + bn->GetDataSize());
extra_data.SetDataSize(sz);
uint8_t* cursor(extra_data.UseData());
for (const AP4_HvccAtom::Sequence *b(&sequences[0]), *e(&sequences[sequences.ItemCount()]);
b != e; ++b)
for (const AP4_DataBuffer *bn(&b->m_Nalus[0]), *en(&b->m_Nalus[b->m_Nalus.ItemCount()]);
bn != en; ++bn)
{
cursor[0] = cursor[1] = cursor[2] = 0;
cursor[3] = 1;
memcpy(cursor + 4, bn->GetData(), bn->GetDataSize());
cursor += bn->GetDataSize() + 4;
}
kodi::Log(ADDON_LOG_DEBUG, "Converted %lu bytes HEVC codec extradata",
extra_data.GetDataSize());
return true;
}
kodi::Log(ADDON_LOG_WARNING, "No HevcSampleDescription - annexb extradata not available");
return false;
}
virtual bool GetInformation(kodi::addon::InputstreamInfo& info) override
{
if (!info.GetFpsRate())
{
if (AP4_HevcSampleDescription* hevc =
AP4_DYNAMIC_CAST(AP4_HevcSampleDescription, sample_description))
{
bool ret = false;
if (hevc->GetAverageFrameRate())
{
info.SetFpsRate(hevc->GetAverageFrameRate());
info.SetFpsScale(256);
ret = true;
}
else if (hevc->GetConstantFrameRate())
{
info.SetFpsRate(hevc->GetConstantFrameRate());
info.SetFpsScale(256);
ret = true;
}
return ret;
}
}
return false;
}
};
/*********************** MPEG ************************/
class ATTR_DLL_LOCAL MPEGCodecHandler : public CodecHandler
{
public:
MPEGCodecHandler(AP4_SampleDescription* sd) : CodecHandler(sd)
{
if (AP4_MpegSampleDescription* aac =
AP4_DYNAMIC_CAST(AP4_MpegSampleDescription, sample_description))
extra_data.SetData(aac->GetDecoderInfo().GetData(), aac->GetDecoderInfo().GetDataSize());
}
};
/*********************** VP9 ************************/
class ATTR_DLL_LOCAL VP9CodecHandler : public CodecHandler
{
public:
VP9CodecHandler(AP4_SampleDescription* sd) : CodecHandler(sd)
{
if (AP4_Atom* atom = sample_description->GetDetails().GetChild(AP4_ATOM_TYPE_VPCC, 0))
{
AP4_VpccAtom* vpcc(AP4_DYNAMIC_CAST(AP4_VpccAtom, atom));
if (vpcc)
extra_data.SetData(vpcc->GetData().GetData(), vpcc->GetData().GetDataSize());
}
}
};
/*********************** TTML ************************/
class ATTR_DLL_LOCAL TTMLCodecHandler : public CodecHandler
{
public:
TTMLCodecHandler(AP4_SampleDescription* sd) : CodecHandler(sd), m_ptsOffset(0){};
virtual bool Transform(AP4_UI64 pts,
AP4_UI32 duration,
AP4_DataBuffer& buf,
AP4_UI64 timescale) override
{
return m_ttml.Parse(buf.GetData(), buf.GetDataSize(), timescale, m_ptsOffset);
}
virtual bool ReadNextSample(AP4_Sample& sample, AP4_DataBuffer& buf) override
{
uint64_t pts;
uint32_t dur;
if (m_ttml.Prepare(pts, dur))
{
buf.SetData(static_cast<const AP4_Byte*>(m_ttml.GetData()), m_ttml.GetDataSize());
sample.SetDts(pts);
sample.SetCtsDelta(0);
sample.SetDuration(dur);
return true;
}
else
buf.SetDataSize(0);
return false;
}
virtual void SetPTSOffset(AP4_UI64 offset) override { m_ptsOffset = offset; };
virtual bool TimeSeek(AP4_UI64 seekPos) override { return m_ttml.TimeSeek(seekPos); };
virtual void Reset() override { m_ttml.Reset(); }
private:
TTML2SRT m_ttml;
AP4_UI64 m_ptsOffset;
};
/*********************** WebVTT ************************/
class ATTR_DLL_LOCAL WebVTTCodecHandler : public CodecHandler
{
public:
WebVTTCodecHandler(AP4_SampleDescription* sd) : CodecHandler(sd), m_ptsOffset(0)
{
if (sd) // WebVTT ISOBMFF format type (ISO/IEC 14496-30:2014)
{
// Inform Kodi subtitle parser that this is a WebVTT ISOBMFF format
// (the extra data must be 4 characters long as imposed in kodi core)
extra_data.SetData(reinterpret_cast<const AP4_Byte*>(&m_extraData), 4);
}
};
virtual bool Transform(AP4_UI64 pts,
AP4_UI32 duration,
AP4_DataBuffer& buf,
AP4_UI64 timescale) override
{
m_data.SetData(buf.GetData(), buf.GetDataSize());
m_pts = pts;
m_duration = duration;
return true;