void CDVBSub::Render(SubPicDesc& spd, REFERENCE_TIME rt, RECT& bbox)
{
DVB_PAGE* pPage = FindPage(rt);
if (pPage != NULL) {
pPage->rendered = true;
TRACE_DVB(_T("DVB - Renderer - %s - %s\n"), ReftimeToString(pPage->rtStart), ReftimeToString(pPage->rtStop));
for (int i = 0; i < pPage->regionCount; i++) {
DVB_REGION* pRegion = &pPage->regions[i];
DVB_CLUT* pCLUT = FindClut(pPage, pRegion->CLUT_id);
if (pCLUT) {
for (int j = 0; j < pRegion->objectCount; j++) {
CompositionObject* pObject = FindObject(pPage, pRegion->objects[j].object_id);
if (pObject) {
short nX, nY;
nX = pRegion->horizAddr + pRegion->objects[j].object_horizontal_position;
nY = pRegion->vertAddr + pRegion->objects[j].object_vertical_position;
pObject->m_width = pRegion->width;
pObject->m_height = pRegion->height;
pObject->SetPalette(pCLUT->size, pCLUT->palette, m_Display.width > 720);
pObject->RenderDvb(spd, nX, nY);
TRACE_DVB(_T(" --> %d/%d - %d/%d\n"), i + 1, pPage->regionCount, j + 1, pRegion->objectCount);
}
}
}
}
bbox.left = 0;
bbox.top = 0;
bbox.right = m_Display.width;
bbox.bottom = m_Display.height;
}
}
void CDVBSub::EndOfStream()
{
// Enqueue the last page if necessary.
TRACE_DVB(_T("DVB - EndOfStream"));
if (m_pCurrentPage) {
TRACE_DVB(_T(": Enqueue last page"));
EnqueuePage(INVALID_TIME);
} else {
TRACE_DVB(_T(" ignored: no page to enqueue\n"));
}
}
STDMETHODIMP CDVBSub::Render(SubPicDesc& spd, REFERENCE_TIME rt, double fps, RECT& bbox)
{
CAutoLock cAutoLock(&m_csCritSec);
rt -= m_rtCurrentSegmentStart; // Make sure the timing are relative to the current segment start
RemoveOldPages(rt);
if (POSITION posPage = FindPage(rt)) {
const auto& pPage = m_pages.GetAt(posPage);
bool BT709 = m_infoSourceTarget.sourceMatrix == BT_709 ? true : m_infoSourceTarget.sourceMatrix == NONE ? (m_displayInfo.width > 720) : false;
pPage->rendered = true;
TRACE_DVB(_T("DVB - Renderer - %s - %s\n"),
ReftimeToString(pPage->rtStart + m_rtCurrentSegmentStart), ReftimeToString(pPage->rtStop + m_rtCurrentSegmentStart));
int nRegion = 1, nObject = 1;
for (POSITION pos = pPage->regionsPos.GetHeadPosition(); pos; nRegion++) {
DVB_REGION_POS regionPos = pPage->regionsPos.GetNext(pos);
if (POSITION posRegion = FindRegion(pPage, regionPos.id)) {
const auto& pRegion = pPage->regions.GetAt(posRegion);
if (POSITION posCLUT = FindClut(pPage, pRegion->CLUT_id)) {
const auto& pCLUT = pPage->CLUTs.GetAt(posCLUT);
for (POSITION posO = pRegion->objects.GetHeadPosition(); posO; nObject++) {
DVB_OBJECT objectPos = pRegion->objects.GetNext(posO);
if (POSITION posObject = FindObject(pPage, objectPos.object_id)) {
const auto& pObject = pPage->objects.GetAt(posObject);
short nX = regionPos.horizAddr + objectPos.object_horizontal_position;
short nY = regionPos.vertAddr + objectPos.object_vertical_position;
pObject->m_width = pRegion->width;
pObject->m_height = pRegion->height;
pObject->SetPalette(pCLUT->size, pCLUT->palette, BT709,
m_infoSourceTarget.sourceBlackLevel, m_infoSourceTarget.sourceWhiteLevel, m_infoSourceTarget.targetBlackLevel, m_infoSourceTarget.targetWhiteLevel);
pObject->RenderDvb(spd, nX, nY);
TRACE_DVB(_T(" --> %d/%d - %d/%d\n"), nRegion, pPage->regionsPos.GetCount(), nObject, pRegion->objects.GetCount());
}
}
}
}
}
bbox.left = 0;
bbox.top = 0;
bbox.right = m_displayInfo.width;
bbox.bottom = m_displayInfo.height;
}
return S_OK;
}
void CDVBSub::EndOfStream()
{
CAutoLock cAutoLock(&m_csCritSec);
// Enqueue the last page if necessary.
if (m_pCurrentPage) {
TRACE_DVB(_T("DVB - EndOfStream: Enqueue last page\n"));
EnqueuePage(INVALID_TIME);
} else {
TRACE_DVB(_T("DVB - EndOfStream ignored: no page to enqueue\n"));
}
}
HRESULT CDVBSub::AddToBuffer(BYTE* pData, int nSize)
{
bool bFirstChunk = (*((LONG*)pData) & 0x00FFFFFF) == 0x000f0020; // DVB sub start with 0x20 0x00 0x0F ...
if (m_nBufferWritePos > 0 || bFirstChunk) {
if (bFirstChunk) {
m_nBufferWritePos = 0;
m_nBufferReadPos = 0;
}
if (m_nBufferWritePos + nSize > m_nBufferSize) {
if (m_nBufferWritePos + nSize > 20 * BUFFER_CHUNK_GROW) {
// Too big to be a DVB sub !
TRACE_DVB("DVB - Too much data received...\n");
ASSERT(FALSE);
Reset();
return E_INVALIDARG;
}
BYTE* pPrev = m_pBuffer;
m_nBufferSize = max(m_nBufferWritePos + nSize, m_nBufferSize + BUFFER_CHUNK_GROW);
m_pBuffer = DNew BYTE[m_nBufferSize];
if (pPrev != NULL) {
memcpy_s(m_pBuffer, m_nBufferSize, pPrev, m_nBufferWritePos);
SAFE_DELETE(pPrev);
}
}
memcpy_s(m_pBuffer + m_nBufferWritePos, m_nBufferSize, pData, nSize);
m_nBufferWritePos += nSize;
return S_OK;
}
return S_FALSE;
}
HRESULT CDVBSub::EndOfStream()
{
if (m_pCurrentPage != NULL) {
TRACE_DVB (_T("DVB - EndOfStream() : %ws => %ws\n"), ReftimeToString(m_pCurrentPage->rtStart), ReftimeToString(m_pCurrentPage->rtStop));
m_Pages.AddTail (m_pCurrentPage.Detach());
}
return S_OK;
}
HRESULT CDVBSub::EnqueuePage(REFERENCE_TIME rtStop)
{
if (m_pCurrentPage->rtStart < rtStop && m_pCurrentPage->rtStop > rtStop) {
m_pCurrentPage->rtStop = rtStop;
}
TRACE_DVB(_T(" %s (%s - %s)\n"), ReftimeToString(rtStop), ReftimeToString(m_pCurrentPage->rtStart), ReftimeToString(m_pCurrentPage->rtStop));
m_Pages.AddTail(m_pCurrentPage.Detach());
return S_OK;
}
void CDVBSub::RemoveOldPages(REFERENCE_TIME rt)
{
// Cleanup the old pages. We keep a 2 min buffer to play nice with the queue.
while (!m_pages.IsEmpty() && m_pages.GetHead()->rtStop + 120 * 10000000i64 < rt) {
auto pPage = m_pages.RemoveHead();
if (!pPage->rendered) {
TRACE_DVB(_T("DVB - remove unrendered object, %s - %s\n"),
ReftimeToString(pPage->rtStart + m_rtCurrentSegmentStart), ReftimeToString(pPage->rtStop + m_rtCurrentSegmentStart));
}
}
}
HRESULT CDVBSub::EnqueuePage(REFERENCE_TIME rtStop)
{
ASSERT(m_pCurrentPage != nullptr);
if (m_pCurrentPage->rtStart < rtStop && m_pCurrentPage->rtStop > rtStop) {
m_pCurrentPage->rtStop = rtStop;
}
TRACE_DVB(_T("DVB - Enqueue page %s (%s - %s)\n"), ReftimeToString(rtStop), ReftimeToString(m_pCurrentPage->rtStart), ReftimeToString(m_pCurrentPage->rtStop));
m_pages.AddTail(m_pCurrentPage);
return S_OK;
}
HRESULT CDVBSub::UpdateTimeStamp(REFERENCE_TIME rtStop)
{
HRESULT hr = S_FALSE;
POSITION pos = m_Pages.GetTailPosition();
while (pos) {
DVB_PAGE* pPage = m_Pages.GetPrev(pos);
if (pPage->rtStop > rtStop) {
TRACE_DVB(_T("DVB - Updated end of display %s - %s --> %s - %s\n"), ReftimeToString(pPage->rtStart), ReftimeToString(pPage->rtStop),
ReftimeToString(pPage->rtStart), ReftimeToString(rtStop));
pPage->rtStop = rtStop;
hr = S_OK;
} else {
break;
}
}
return hr;
}
void CDVBSub::CleanOld(REFERENCE_TIME rt)
{
// Cleanup old PG
DVB_PAGE* pPage_old;
while (m_Pages.GetCount()>0) {
pPage_old = m_Pages.GetHead();
if (pPage_old->rtStop < rt) {
if (!pPage_old->Rendered) {
TRACE_DVB (_T("DVB - remove unrendered object, %ws => %ws, (rt = %ws)\n"),
ReftimeToString(pPage_old->rtStart), ReftimeToString(pPage_old->rtStop),
ReftimeToString(rt));
}
m_Pages.RemoveHead();
delete pPage_old;
} else {
break;
}
}
}
POSITION CDVBSub::GetStartPosition(REFERENCE_TIME rt, double fps)
{
DVB_PAGE* pPage;
// Cleanup old PG
while (m_Pages.GetCount() > 0) {
pPage = m_Pages.GetHead();
if (pPage->rtStop < rt) {
if (!pPage->Rendered) {
TRACE_DVB("DVB - remove unrendered object, %S - %S\n", ReftimeToString(pPage->rtStart), ReftimeToString(pPage->rtStop));
}
m_Pages.RemoveHead();
delete pPage;
} else {
break;
}
}
return m_Pages.GetHeadPosition();
}
void CDVBSub::Render(SubPicDesc& spd, REFERENCE_TIME rt, RECT& bbox)
{
DVB_PAGE* pPage = FindPage (rt);
if (pPage != NULL) {
pPage->Rendered = true;
for (int i=0; i<pPage->RegionCount; i++) {
CDVBSub::DVB_REGION* pRegion = &pPage->Regions[i];
for (int j=0; j<pRegion->ObjectCount; j++) {
CompositionObject* pObject = FindObject (pPage, pRegion->Objects[j].object_id);
if (pObject) {
SHORT nX, nY;
nX = pRegion->HorizAddr + pRegion->Objects[j].object_horizontal_position;
nY = pRegion->VertAddr + pRegion->Objects[j].object_vertical_position;
pObject->m_width = pRegion->width;
pObject->m_height = pRegion->height;
CDVBSub::DVB_CLUT* pClut = FindClut(pPage, pRegion->CLUT_id);
if (pClut != NULL) {
pObject->SetPalette(pClut->Size, pClut->Palette, m_Display.width > 720);
}
TRACE_DVB (_T("CDVBSub::Render() : size = %ld, %d:%d, ObjRes = %dx%d, SPDRes = %dx%d, %I64d = %ws, [%ws => %ws]\n"),
pObject->GetRLEDataSize(),
nX, nY,
pObject->m_width, pObject->m_height, spd.w, spd.h,
rt, ReftimeToString(rt),
ReftimeToString(pPage->rtStart), ReftimeToString(pPage->rtStop));
pObject->RenderDvb(spd, nX, nY);
}
}
}
bbox.left = 0;
bbox.top = 0;
bbox.right = m_Display.width < spd.w ? m_Display.width : spd.w;
ASSERT(spd.h >= 0);
bbox.bottom = m_Display.height < spd.h ? m_Display.height : spd.h;
}
}
POSITION CDVBSub::GetStartPosition(REFERENCE_TIME rt, double fps)
{
DVB_PAGE* pPage;
// Cleanup old PG
while (m_Pages.GetCount()>0) {
pPage = m_Pages.GetHead();
if (pPage->rtStop < rt) {
if (!pPage->Rendered) {
TRACE_DVB ("DVB - remove unrendered object, %S - %S\n", ReftimeToString(pPage->rtStart), ReftimeToString(pPage->rtStop));
}
//TRACE_HDMVSUB ("CHdmvSub:HDMV remove object %d %S => %S (rt=%S)\n", pPage->GetRLEDataSize(),
// ReftimeToString (pPage->rtStart), ReftimeToString(pPage->rtStop), ReftimeToString(rt));
m_Pages.RemoveHead();
delete pPage;
} else {
break;
}
}
return m_Pages.GetHeadPosition();
}
HRESULT CDVBSub::ParseObject(CGolombBuffer& gb, WORD wSegLength)
{
HRESULT hr = E_POINTER;
if (m_pCurrentPage) {
size_t nExpectedSize = 3;
size_t nEnd = gb.GetPos() + wSegLength;
short id = gb.ReadShort();
POSITION posObject = FindObject(m_pCurrentPage, id);
if (!posObject) {
posObject = m_pCurrentPage->objects.AddTail(CAutoPtr<CompositionObject>(DEBUG_NEW CompositionObject()));
}
const auto& pObject = m_pCurrentPage->objects.GetAt(posObject);
pObject->m_object_id_ref = id;
pObject->m_version_number = (BYTE)gb.BitRead(4);
BYTE object_coding_method = (BYTE)gb.BitRead(2); // object_coding_method
gb.BitRead(1); // non_modifying_colour_flag
gb.BitRead(1); // reserved
if (object_coding_method == 0x00) {
pObject->SetRLEData(gb.GetBufferPos(), wSegLength - nExpectedSize, wSegLength - nExpectedSize);
gb.SkipBytes(wSegLength - 3);
hr = (wSegLength >= nExpectedSize) ? S_OK : E_UNEXPECTED;
} else {
TRACE_DVB(_T("DVB - Text subtitles are currently not supported\n"));
m_pCurrentPage->objects.RemoveTail();
hr = E_NOTIMPL;
}
}
return hr;
}
HRESULT CDVBSub::ParseSample(IMediaSample* pSample)
{
CheckPointer (pSample, E_POINTER);
HRESULT hr;
BYTE* pData = NULL;
int nSize;
DVB_SEGMENT_TYPE nCurSegment;
hr = pSample->GetPointer(&pData);
if (FAILED(hr) || pData == NULL) {
return hr;
}
nSize = pSample->GetActualDataLength();
if (*((LONG*)pData) == 0xBD010000) {
CGolombBuffer gb (pData, nSize);
gb.SkipBytes(4);
WORD wLength = (WORD)gb.BitRead(16);
UNREFERENCED_PARAMETER(wLength);
if (gb.BitRead(2) != 2) {
return E_FAIL; // type
}
gb.BitRead(2); // scrambling
gb.BitRead(1); // priority
gb.BitRead(1); // alignment
gb.BitRead(1); // copyright
gb.BitRead(1); // original
BYTE fpts = (BYTE)gb.BitRead(1); // fpts
BYTE fdts = (BYTE)gb.BitRead(1); // fdts
gb.BitRead(1); // escr
gb.BitRead(1); // esrate
gb.BitRead(1); // dsmtrickmode
gb.BitRead(1); // morecopyright
gb.BitRead(1); // crc
gb.BitRead(1); // extension
gb.BitRead(8); // hdrlen
if (fpts) {
BYTE b = (BYTE)gb.BitRead(4);
if (!(fdts && b == 3 || !fdts && b == 2)) {
ASSERT(0);
return(E_FAIL);
}
REFERENCE_TIME pts = 0;
pts |= gb.BitRead(3) << 30;
MARKER; // 32..30
pts |= gb.BitRead(15) << 15;
MARKER; // 29..15
pts |= gb.BitRead(15);
MARKER; // 14..0
pts = 10000*pts/90;
m_rtStart = pts;
m_rtStop = pts+1;
} else {
m_rtStart = INVALID_TIME;
m_rtStop = INVALID_TIME;
}
nSize -= 14;
pData += 14;
pSample->GetTime(&m_rtStart, &m_rtStop);
pSample->GetMediaTime(&m_rtStart, &m_rtStop);
} else if (SUCCEEDED (pSample->GetTime(&m_rtStart, &m_rtStop))) {
pSample->SetTime(&m_rtStart, &m_rtStop);
}
if (AddToBuffer (pData, nSize) == S_OK) {
CGolombBuffer gb (m_pBuffer+m_nBufferReadPos, m_nBufferWritePos-m_nBufferReadPos);
int nLastPos = 0;
while (!gb.IsEOF()) {
if (gb.ReadByte() == 0x0F) {
WORD wPageId;
WORD wSegLength;
nCurSegment = (DVB_SEGMENT_TYPE) gb.ReadByte();
wPageId = gb.ReadShort();
wSegLength = gb.ReadShort();
if (gb.RemainingSize() < wSegLength) {
hr = S_FALSE;
break;
}
TRACE_DVB (_T("DVB - ParseSample, Segment = [%ws], PageId = [%d], SegLength/Buffer = [%d]/[%d]\n"), GetSegmentType(nCurSegment), wPageId, wSegLength, gb.RemainingSize());
switch (nCurSegment) {
case PAGE : {
CAutoPtr<DVB_PAGE> pPage;
ParsePage(gb, wSegLength, pPage);
if (pPage->PageState == DPS_ACQUISITION || pPage->PageState == DPS_MODE) {
TRACE_DVB (_T("DVB - Page start\n"));
if (m_pCurrentPage != NULL) {
m_pCurrentPage->rtStop = min(m_pCurrentPage->rtStop, m_rtStart);
TRACE_DVB (_T("DVB - store Page : %ws => %ws\n"), ReftimeToString(m_pCurrentPage->rtStart), ReftimeToString(m_pCurrentPage->rtStop));
m_Pages.AddTail (m_pCurrentPage.Detach());
}
UpdateTimeStamp(m_rtStart);
m_pCurrentPage = pPage;
m_pCurrentPage->rtStart = m_rtStart;
m_pCurrentPage->rtStop = m_pCurrentPage->rtStart + m_pCurrentPage->PageTimeOut * UNITS; // TODO - need to limit the duration of the segment
TRACE_DVB (_T("DVB - Page started : %ws, TimeOut = %d\n"), ReftimeToString(m_pCurrentPage->rtStart), m_pCurrentPage->PageTimeOut);
} else if (pPage->PageState == DPS_NORMAL) {
TRACE_DVB (_T("DVB - Page update\n"));
if (m_pCurrentPage && !m_pCurrentPage->RegionCount && pPage->RegionCount) {
m_pCurrentPage = pPage;
m_pCurrentPage->rtStart = m_rtStart;
m_pCurrentPage->rtStop = m_pCurrentPage->rtStart + m_pCurrentPage->PageTimeOut * UNITS; // TODO - need to limit the duration of the segment
TRACE_DVB (_T("DVB - Page started[update] : %ws, TimeOut = %d\n"), ReftimeToString(m_pCurrentPage->rtStart), m_pCurrentPage->PageTimeOut);
}
}
}
break;
case REGION :
ParseRegion(gb, wSegLength);
TRACE_DVB (_T("DVB - Region\n"));
break;
case CLUT :
ParseClut(gb, wSegLength);
TRACE_DVB (_T("DVB - Clut\n"));
break;
case OBJECT :
ParseObject(gb, wSegLength);
TRACE_DVB (_T("DVB - Object\n"));
break;
case DISPLAY :
ParseDisplay(gb, wSegLength);
TRACE_DVB (_T("DVB - Display\n"));
break;
case END_OF_DISPLAY :
/*
if (m_pCurrentPage != NULL && (m_pCurrentPage->rtStart != m_rtStart)) {
m_pCurrentPage->rtStop = max(m_pCurrentPage->rtStop, m_rtStart);
TRACE_DVB (_T("DVB - End display : %ws => %ws\n"), ReftimeToString(m_pCurrentPage->rtStart), ReftimeToString(m_pCurrentPage->rtStop));
m_Pages.AddTail (m_pCurrentPage.Detach());
}
*/
TRACE_DVB (_T("DVB - End display\n"));
break;
default :
TRACE_DVB (_T("DVB - unknown Segment\n"));
break;
}
nLastPos = gb.GetPos();
}
}
m_nBufferReadPos += nLastPos;
}
return hr;
}
HRESULT CDVBSub::ParseSample(IMediaSample* pSample)
{
CheckPointer(pSample, E_POINTER);
HRESULT hr;
BYTE* pData = NULL;
int nSize;
DVB_SEGMENT_TYPE nCurSegment;
hr = pSample->GetPointer(&pData);
if (FAILED(hr) || pData == NULL) {
return hr;
}
nSize = pSample->GetActualDataLength();
if (*((LONG*)pData) == 0xBD010000) {
CGolombBuffer gb(pData, nSize);
gb.SkipBytes(4);
WORD wLength = (WORD)gb.BitRead(16);
UNREFERENCED_PARAMETER(wLength);
if (gb.BitRead(2) != 2) {
return E_FAIL; // type
}
gb.BitRead(2); // scrambling
gb.BitRead(1); // priority
gb.BitRead(1); // alignment
gb.BitRead(1); // copyright
gb.BitRead(1); // original
BYTE fpts = (BYTE)gb.BitRead(1); // fpts
BYTE fdts = (BYTE)gb.BitRead(1); // fdts
gb.BitRead(1); // escr
gb.BitRead(1); // esrate
gb.BitRead(1); // dsmtrickmode
gb.BitRead(1); // morecopyright
gb.BitRead(1); // crc
gb.BitRead(1); // extension
gb.BitRead(8); // hdrlen
if (fpts) {
BYTE b = (BYTE)gb.BitRead(4);
if (!(fdts && b == 3 || !fdts && b == 2)) {
ASSERT(0);
return E_FAIL;
}
REFERENCE_TIME pts = 0;
pts |= gb.BitRead(3) << 30;
MARKER; // 32..30
pts |= gb.BitRead(15) << 15;
MARKER; // 29..15
pts |= gb.BitRead(15);
MARKER; // 14..0
pts = 10000 * pts / 90;
m_rtStart = pts;
m_rtStop = pts + 1;
} else {
m_rtStart = INVALID_TIME;
m_rtStop = INVALID_TIME;
}
nSize -= 14;
pData += 14;
pSample->GetTime(&m_rtStart, &m_rtStop);
pSample->GetMediaTime(&m_rtStart, &m_rtStop);
} else if (SUCCEEDED(pSample->GetTime(&m_rtStart, &m_rtStop))) {
pSample->SetTime(&m_rtStart, &m_rtStop);
}
//FILE* hFile = fopen("D:\\Sources\\mpc-hc\\A garder\\TestSubRip\\dvbsub.dat", "ab");
//if (hFile != NULL)
//{
// //BYTE Buff[5] = {48};
// //*((DWORD*)(Buff+1)) = lSampleLen;
// //fwrite(Buff, 1, sizeof(Buff), hFile);
// fwrite(pData, 1, lSampleLen, hFile);
// fclose(hFile);
//}
if (AddToBuffer(pData, nSize) == S_OK) {
CGolombBuffer gb(m_pBuffer + m_nBufferReadPos, m_nBufferWritePos - m_nBufferReadPos);
int nLastPos = 0;
while (!gb.IsEOF()) {
if (gb.ReadByte() == 0x0F) {
TRACE_DVB("DVB - ParseSample\n");
WORD wPageId;
WORD wSegLength;
nCurSegment = (DVB_SEGMENT_TYPE) gb.ReadByte();
wPageId = gb.ReadShort();
wSegLength = gb.ReadShort();
if (gb.RemainingSize() < wSegLength) {
hr = S_FALSE;
break;
}
switch (nCurSegment) {
case PAGE: {
CAutoPtr<DVB_PAGE> pPage;
ParsePage(gb, wSegLength, pPage);
if (pPage->PageState == DPS_ACQUISITION) {
if (m_pCurrentPage != NULL) {
m_pCurrentPage->rtStop = max(m_pCurrentPage->rtStop, m_rtStart);
m_Pages.AddTail(m_pCurrentPage.Detach());
}
UpdateTimeStamp(m_rtStart);
m_pCurrentPage = pPage;
m_pCurrentPage->rtStart = m_rtStart;
m_pCurrentPage->rtStop = m_pCurrentPage->rtStart + m_pCurrentPage->PageTimeOut * 1000000;
TRACE_DVB("DVB - Page started %S, TimeOut = %d\n", ReftimeToString(m_rtStart), m_pCurrentPage->PageTimeOut);
} else {
TRACE_DVB("DVB - Page update\n");
if (m_pCurrentPage && !m_pCurrentPage->RegionCount) {
m_pCurrentPage = pPage;
m_pCurrentPage->rtStart = m_rtStart;
m_pCurrentPage->rtStop = m_pCurrentPage->rtStart + m_pCurrentPage->PageTimeOut * 1000000;
TRACE_DVB("DVB - Page started[update] %S, TimeOut = %d\n", ReftimeToString(m_rtStart), m_pCurrentPage->PageTimeOut);
}
}
}
break;
case REGION:
ParseRegion(gb, wSegLength);
TRACE_DVB("DVB - Region\n");
break;
case CLUT:
ParseClut(gb, wSegLength);
TRACE_DVB("DVB - Clut\n");
break;
case OBJECT:
ParseObject(gb, wSegLength);
TRACE_DVB("DVB - Object\n");
break;
case DISPLAY:
ParseDisplay(gb, wSegLength);
TRACE_DVB("DVB - Display\n");
break;
case END_OF_DISPLAY:
if (m_pCurrentPage != NULL && (m_pCurrentPage->rtStart != m_rtStart)) {
m_pCurrentPage->rtStop = max(m_pCurrentPage->rtStop, m_rtStart);
TRACE_DVB("DVB - End display %S - %S\n", ReftimeToString(m_pCurrentPage->rtStart), ReftimeToString(m_pCurrentPage->rtStop));
m_Pages.AddTail(m_pCurrentPage.Detach());
}
break;
default:
break;
}
nLastPos = gb.GetPos();
}
}
m_nBufferReadPos += nLastPos;
}
return hr;
}
HRESULT CDVBSub::ParseSample(IMediaSample* pSample)
{
CheckPointer(pSample, E_POINTER);
HRESULT hr;
BYTE* pData = nullptr;
int nSize;
DVB_SEGMENT_TYPE nCurSegment;
hr = pSample->GetPointer(&pData);
if (FAILED(hr) || pData == nullptr) {
return hr;
}
nSize = pSample->GetActualDataLength();
if (*((LONG*)pData) == 0xBD010000) {
CGolombBuffer gb(pData, nSize);
gb.SkipBytes(4);
WORD wLength = (WORD)gb.BitRead(16);
UNREFERENCED_PARAMETER(wLength);
if (gb.BitRead(2) != 2) {
return E_FAIL; // type
}
gb.BitRead(2); // scrambling
gb.BitRead(1); // priority
gb.BitRead(1); // alignment
gb.BitRead(1); // copyright
gb.BitRead(1); // original
BYTE fpts = (BYTE)gb.BitRead(1); // fpts
BYTE fdts = (BYTE)gb.BitRead(1); // fdts
gb.BitRead(1); // escr
gb.BitRead(1); // esrate
gb.BitRead(1); // dsmtrickmode
gb.BitRead(1); // morecopyright
gb.BitRead(1); // crc
gb.BitRead(1); // extension
gb.BitRead(8); // hdrlen
if (fpts) {
BYTE b = (BYTE)gb.BitRead(4);
if (!(fdts && b == 3 || !fdts && b == 2)) {
ASSERT(0);
return E_FAIL;
}
REFERENCE_TIME pts = 0;
pts |= gb.BitRead(3) << 30;
MARKER; // 32..30
pts |= gb.BitRead(15) << 15;
MARKER; // 29..15
pts |= gb.BitRead(15);
MARKER; // 14..0
pts = 10000 * pts / 90;
m_rtStart = pts;
m_rtStop = pts + 1;
} else {
m_rtStart = INVALID_TIME;
m_rtStop = INVALID_TIME;
}
nSize -= 14;
pData += 14;
pSample->GetTime(&m_rtStart, &m_rtStop);
pSample->GetMediaTime(&m_rtStart, &m_rtStop);
} else if (SUCCEEDED(pSample->GetTime(&m_rtStart, &m_rtStop))) {
pSample->SetTime(&m_rtStart, &m_rtStop);
}
if (AddToBuffer(pData, nSize) == S_OK) {
CGolombBuffer gb(m_pBuffer + m_nBufferReadPos, m_nBufferWritePos - m_nBufferReadPos);
int nLastPos = 0;
while (gb.RemainingSize() >= 6) { // Ensure there is enough data to parse the entire segment header
if (gb.ReadByte() == 0x0F) {
TRACE_DVB(_T("DVB - ParseSample\n"));
WORD wPageId;
WORD wSegLength;
nCurSegment = (DVB_SEGMENT_TYPE)gb.ReadByte();
wPageId = gb.ReadShort();
wSegLength = gb.ReadShort();
if (gb.RemainingSize() < wSegLength) {
hr = S_FALSE;
break;
}
switch (nCurSegment) {
case PAGE: {
if (m_pCurrentPage != nullptr) {
TRACE_DVB(_T("DVB - Force End display"));
EnqueuePage(m_rtStart);
}
UpdateTimeStamp(m_rtStart);
CAutoPtr<DVB_PAGE> pPage;
ParsePage(gb, wSegLength, pPage);
if (pPage->pageState == DPS_ACQUISITION || pPage->pageState == DPS_MODE_CHANGE) {
m_pCurrentPage = pPage;
m_pCurrentPage->rtStart = m_rtStart;
m_pCurrentPage->rtStop = m_pCurrentPage->rtStart + m_pCurrentPage->pageTimeOut * 10000000;
TRACE_DVB(_T("DVB - Page started [pageState = %d] %s, TimeOut = %ds\n"), m_pCurrentPage->pageState, ReftimeToString(m_rtStart), m_pCurrentPage->pageTimeOut);
} else if (!m_Pages.IsEmpty()) {
m_pCurrentPage = pPage;
m_pCurrentPage->rtStart = m_rtStart;
m_pCurrentPage->rtStop = m_pCurrentPage->rtStart + m_pCurrentPage->pageTimeOut * 10000000;
// Copy data from the previous page
DVB_PAGE* pPrevPage = m_Pages.GetTail();
memcpy(m_pCurrentPage->regions, pPrevPage->regions, sizeof(m_pCurrentPage->regions));
for (POSITION pos = pPrevPage->objects.GetHeadPosition(); pos;) {
m_pCurrentPage->objects.AddTail(pPrevPage->objects.GetNext(pos)->Copy());
}
for (POSITION pos = pPrevPage->CLUTs.GetHeadPosition(); pos;) {
m_pCurrentPage->CLUTs.AddTail(DEBUG_NEW DVB_CLUT(*pPrevPage->CLUTs.GetNext(pos)));
}
TRACE_DVB(_T("DVB - Page started [update] %s, TimeOut = %ds\n"), ReftimeToString(m_rtStart), m_pCurrentPage->pageTimeOut);
} else {
TRACE_DVB(_T("DVB - Page update ignored %s\n"), ReftimeToString(m_rtStart));
}
}
break;
case REGION:
ParseRegion(gb, wSegLength);
TRACE_DVB(_T("DVB - Region\n"));
break;
case CLUT:
ParseClut(gb, wSegLength);
TRACE_DVB(_T("DVB - Clut\n"));
break;
case OBJECT:
ParseObject(gb, wSegLength);
TRACE_DVB(_T("DVB - Object\n"));
break;
case DISPLAY:
ParseDisplay(gb, wSegLength);
TRACE_DVB(_T("DVB - Display\n"));
break;
case END_OF_DISPLAY:
if (m_pCurrentPage == nullptr) {
TRACE_DVB(_T("DVB - Ignored End display %s: no current page\n"), ReftimeToString(m_rtStart));
} else if (m_pCurrentPage->rtStart < m_rtStart) {
TRACE_DVB(_T("DVB - End display"));
EnqueuePage(m_rtStart);
} else {
TRACE_DVB(_T("DVB - Ignored End display %s: no information on page duration\n"), ReftimeToString(m_rtStart));
}
break;
default:
break;
}
nLastPos = gb.GetPos();
}
}
m_nBufferReadPos += nLastPos;
}
return hr;
}
