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main.cpp
3670 lines (3196 loc) · 119 KB
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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 <algorithm>
#include <iostream>
#include <stdio.h>
#include <string.h>
#include <sstream>
#include <kodi/General.h>
#include <kodi/Filesystem.h>
#include <kodi/StreamCodec.h>
#include <kodi/addon-instance/VideoCodec.h>
#include "DemuxCrypto.h"
#include "aes_decrypter.h"
#include "helpers.h"
#include "log.h"
#include "parser/DASHTree.h"
#include "parser/SmoothTree.h"
#include "parser/HLSTree.h"
#include "parser/TTML.h"
#include "parser/WebVTT.h"
#include "TSReader.h"
#include "ADTSReader.h"
#include "WebmReader.h"
#include "Ap4Utils.h"
#include <dlfcn.h>
#if defined(ANDROID)
#include <kodi/platform/android/System.h>
#endif
#define DVD_TIME_BASE 1000000
#undef CreateDirectory
#define SAFE_DELETE(p) do { delete (p); (p)=NULL; } while (0)
//extern definition in helpers.h
bool preReleaseFeatures = false;
void Log(const LogLevel loglevel, const char* format, ...)
{
char buffer[16384];
va_list args;
va_start(args, format);
vsprintf(buffer, format, args);
va_end(args);
::kodi::addon::CAddonBase::m_interface->toKodi->addon_log_msg(::kodi::addon::CAddonBase::m_interface->toKodi->kodiBase, loglevel, 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 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(OpenFileFlags::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 CreateDirectory(const char *dir)override
{
return kodi::vfs::CreateDirectory(dir);
};
virtual void Log(LOGLEVEL level, const char *msg)override
{
const AddonLog 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 char *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 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
{
/* unimplemented */
return AP4_ERROR_NOT_SUPPORTED;
};
// 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 scanEffectiveURL)
{
// 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(OpenFileFlags::READ_CHUNKED | OpenFileFlags::READ_NO_CACHE))
{
kodi::Log(ADDON_LOG_ERROR, "Cannot download %s", url);
return false;
}
if (scanEffectiveURL)
{
effective_url_ = file.GetPropertyValue(ADDON_FILE_PROPERTY_EFFECTIVE_URL, "");
kodi::Log(ADDON_LOG_DEBUG, "Effective URL %s", effective_url_.c_str());
std::string::size_type paramPos = effective_url_.find_first_of('?');
if (paramPos != std::string::npos)
effective_url_.resize(paramPos);
paramPos = effective_url_.find_last_of('/');
if (paramPos != std::string::npos)
{
effective_filename_ = effective_url_.substr(paramPos + 1);
effective_url_.resize(paramPos + 1);
}
else
effective_url_.clear();
if (effective_url_ == base_url_)
effective_url_.clear();
}
// 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 %s finished", url);
return nbRead == 0;
}
bool KodiAdaptiveStream::download(const char* url, const std::map<std::string, std::string> &mediaHeaders)
{
bool retry = true;
kodi::vfs::CFile file;
std::string newUrl;
RETRY:
// 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(OpenFileFlags::READ_CHUNKED | OpenFileFlags::READ_NO_CACHE | OpenFileFlags::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 == 403 && retry && !getMediaRenewalUrl().empty())
{
retry = false;
std::vector<kodi::vfs::CDirEntry> items;
if (kodi::vfs::GetDirectory(getMediaRenewalUrl(), "", items) && items.size() == 1)
{
kodi::Log(ADDON_LOG_DEBUG, "Renewed URL: %s", items[0].Path().c_str());
setEffectiveURL(items[0].Path());
newUrl = buildDownloadUrl(url);
url = newUrl.c_str();
goto RETRY;
}
else
kodi::Log(ADDON_LOG_ERROR, "Retrieving renewal URL failed (%s)", getMediaRenewalUrl().c_str());
}
else if (returnCode >= 400)
{
kodi::Log(ADDON_LOG_ERROR, "Download %s failed with error: %d", url, returnCode);
}
else
{
// read the file
char *buf = (char*)malloc(32 * 1024);
size_t nbReadOverall = 0;
while ((nbRead = file.Read(buf, 32 * 1024)) > 0 && ~nbRead && write_data(buf, nbRead)) nbReadOverall += nbRead;
free(buf);
if (!nbReadOverall)
{
kodi::Log(ADDON_LOG_ERROR, "Download %s doesn't provide any data: invalid", 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)
set_download_speed(current_download_speed_);
else
{
double ratio = (double)nbReadOverall / ref_packet;
set_download_speed((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, get_download_speed(), current_download_speed_);
}
file.Close();
return nbRead == 0;
}
return false;
}
bool KodiAdaptiveStream::parseIndexRange()
{
kodi::Log(ADDON_LOG_DEBUG, "Build segments from SIDX atom...");
AP4_DASHStream byteStream(this);
adaptive::AdaptiveTree::Representation *rep(const_cast<adaptive::AdaptiveTree::Representation*>(getRepresentation()));
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;
}
if (1/*!(rep->flags_ & adaptive::AdaptiveTree::Representation::INITIALIZATION)*/)
{
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 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(INPUTSTREAM_INFO &info)
{
AP4_GenericAudioSampleDescription* asd(nullptr);
if (sample_description)
{
if ((asd = dynamic_cast<AP4_GenericAudioSampleDescription*>(sample_description)))
{
if ((!info.m_Channels && asd->GetChannelCount() != info.m_Channels)
|| (!info.m_SampleRate && asd->GetSampleRate() != info.m_SampleRate)
|| (!info.m_BitsPerSample && asd->GetSampleSize() != info.m_BitsPerSample))
{
if (!info.m_Channels)
info.m_Channels = asd->GetChannelCount();
if (!info.m_SampleRate)
info.m_SampleRate = asd->GetSampleRate();
if (!info.m_BitsPerSample)
info.m_BitsPerSample = 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.m_FpsScale != fpsScale || info.m_FpsRate != fpsRate)
{
info.m_FpsScale = fpsScale;
info.m_FpsRate = fpsRate;
return true;
}
}
}
}
return false;
};
virtual bool ExtraDataToAnnexB() { return false; };
virtual STREAMCODEC_PROFILE GetProfile() { return STREAMCODEC_PROFILE::CodecProfileNotNeeded; };
virtual bool Transform(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 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(INPUTSTREAM_INFO &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)
{
if (AP4_SUCCEEDED(AP4_AvcFrameParser::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(AP4_AvcFrameParser::ParseSPS(spsList[i].GetData(), spsList[i].GetDataSize(), sps)) && sps.seq_parameter_set_id == pps.seq_parameter_set_id)
{
bool ret = sps.GetInfo(info.m_Width, info.m_Height);
ret = sps.GetVUIInfo(info.m_FpsRate, info.m_FpsScale, info.m_Aspect) || ret;
return ret;
}
}
break;
}
}
}
return false;
};
virtual STREAMCODEC_PROFILE GetProfile() override
{
return codecProfile;
};
private:
unsigned int countPictureSetIds;
STREAMCODEC_PROFILE codecProfile;
bool needSliceInfo;
};
/*********************** HEVC ************************/
class 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(INPUTSTREAM_INFO &info) override
{
if (!info.m_FpsRate)
{
if (AP4_HevcSampleDescription *hevc = AP4_DYNAMIC_CAST(AP4_HevcSampleDescription, sample_description))
{
bool ret = false;
if (hevc->GetConstantFrameRate() && hevc->GetAverageFrameRate())
{
info.m_FpsRate = hevc->GetAverageFrameRate();
info.m_FpsScale = 256;
ret = true;
}
return ret;
}
}
return false;
}
};
/*********************** MPEG ************************/
class 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 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 TTMLCodecHandler : public CodecHandler
{
public:
TTMLCodecHandler(AP4_SampleDescription *sd)
:CodecHandler(sd)
,m_ptsOffset(0)
{};
virtual bool Transform(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;
};
/*********************** TTML ************************/
class WebVTTCodecHandler : public CodecHandler
{
public:
WebVTTCodecHandler(AP4_SampleDescription *sd)
:CodecHandler(sd)
, m_ptsOffset(0)
{};
virtual bool Transform(AP4_DataBuffer &buf, AP4_UI64 timescale) override
{
return m_webVtt.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_webVtt.Prepare(pts, dur))
{
buf.SetData(static_cast<const AP4_Byte*>(m_webVtt.GetData()), m_webVtt.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_webVtt.TimeSeek(seekPos);
};
virtual void Reset() override
{
m_webVtt.Reset();
}
private:
WebVTT m_webVtt;
AP4_UI64 m_ptsOffset;
};
/*******************************************************
| SampleReader
********************************************************/
class SampleReader
{
public:
virtual ~SampleReader() = default;
virtual bool EOS()const = 0;