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-rw-r--r--core/src/fxcodec/codec/fx_codec_jbig.cpp3
-rw-r--r--core/src/fxcodec/jbig2/JBig2_Context.cpp190
-rw-r--r--core/src/fxcodec/jbig2/JBig2_Context.h31
3 files changed, 62 insertions, 162 deletions
diff --git a/core/src/fxcodec/codec/fx_codec_jbig.cpp b/core/src/fxcodec/codec/fx_codec_jbig.cpp
index dca653de31..2cdff9f88c 100644
--- a/core/src/fxcodec/codec/fx_codec_jbig.cpp
+++ b/core/src/fxcodec/codec/fx_codec_jbig.cpp
@@ -54,8 +54,7 @@ FXCODEC_STATUS CCodec_Jbig2Module::StartDecode(void* pJbig2Context,
m_pJbig2Context->m_bFileReader = FALSE;
FXSYS_memset(dest_buf, 0, height * dest_pitch);
m_pJbig2Context->m_pContext = CJBig2_Context::CreateContext(
- global_data, global_size, src_buf, src_size, JBIG2_EMBED_STREAM,
- &m_SymbolDictCache, pPause);
+ global_data, global_size, src_buf, src_size, &m_SymbolDictCache, pPause);
if (!m_pJbig2Context->m_pContext) {
return FXCODEC_STATUS_ERROR;
}
diff --git a/core/src/fxcodec/jbig2/JBig2_Context.cpp b/core/src/fxcodec/jbig2/JBig2_Context.cpp
index c004c87503..bd2421e3f9 100644
--- a/core/src/fxcodec/jbig2/JBig2_Context.cpp
+++ b/core/src/fxcodec/jbig2/JBig2_Context.cpp
@@ -29,93 +29,49 @@ CJBig2_Context* CJBig2_Context::CreateContext(
FX_DWORD dwGlobalLength,
const uint8_t* pData,
FX_DWORD dwLength,
- int32_t nStreamType,
std::list<CJBig2_CachePair>* pSymbolDictCache,
IFX_Pause* pPause) {
return new CJBig2_Context(pGlobalData, dwGlobalLength, pData, dwLength,
- nStreamType, pSymbolDictCache, pPause);
+ pSymbolDictCache, pPause);
}
+
void CJBig2_Context::DestroyContext(CJBig2_Context* pContext) {
delete pContext;
}
+
CJBig2_Context::CJBig2_Context(const uint8_t* pGlobalData,
FX_DWORD dwGlobalLength,
const uint8_t* pData,
FX_DWORD dwLength,
- int32_t nStreamType,
std::list<CJBig2_CachePair>* pSymbolDictCache,
- IFX_Pause* pPause) {
+ IFX_Pause* pPause)
+ : m_nSegmentDecoded(0),
+ m_bInPage(false),
+ m_bBufSpecified(false),
+ m_PauseStep(10),
+ m_pPause(pPause),
+ m_ProcessingStatus(FXCODEC_STATUS_FRAME_READY),
+ m_pArithDecoder(NULL),
+ m_gbContext(NULL),
+ m_dwOffset(0),
+ m_pSymbolDictCache(pSymbolDictCache) {
if (pGlobalData && (dwGlobalLength > 0)) {
- m_pGlobalContext =
- new CJBig2_Context(NULL, 0, pGlobalData, dwGlobalLength,
- JBIG2_EMBED_STREAM, pSymbolDictCache, pPause);
+ m_pGlobalContext = new CJBig2_Context(
+ nullptr, 0, pGlobalData, dwGlobalLength, pSymbolDictCache, pPause);
} else {
- m_pGlobalContext = NULL;
- }
- m_pStream = new CJBig2_BitStream(pData, dwLength);
- m_nStreamType = nStreamType;
- m_nState = JBIG2_OUT_OF_PAGE;
- m_pPage = NULL;
- m_bBufSpecified = FALSE;
- m_pPause = pPause;
- m_nSegmentDecoded = 0;
- m_PauseStep = 10;
- m_pArithDecoder = NULL;
- m_pGRD = NULL;
- m_gbContext = NULL;
- m_dwOffset = 0;
- m_ProcessingStatus = FXCODEC_STATUS_FRAME_READY;
- m_pSymbolDictCache = pSymbolDictCache;
+ m_pGlobalContext = nullptr;
+ }
+
+ m_pStream.reset(new CJBig2_BitStream(pData, dwLength));
}
+
CJBig2_Context::~CJBig2_Context() {
delete m_pArithDecoder;
m_pArithDecoder = NULL;
- delete m_pGRD;
- m_pGRD = NULL;
FX_Free(m_gbContext);
m_gbContext = NULL;
delete m_pGlobalContext;
m_pGlobalContext = NULL;
- if (m_bBufSpecified) {
- delete m_pPage;
- }
- m_pPage = NULL;
- delete m_pStream;
- m_pStream = NULL;
-}
-
-int32_t CJBig2_Context::decodeFile(IFX_Pause* pPause) {
- if (m_pStream->getByteLeft() < 8)
- return JBIG2_ERROR_TOO_SHORT;
-
- const uint8_t fileID[] = {0x97, 0x4A, 0x42, 0x32, 0x0D, 0x0A, 0x1A, 0x0A};
- if (JBIG2_memcmp(m_pStream->getPointer(), fileID, 8) != 0)
- return JBIG2_ERROR_FILE_FORMAT;
-
- m_pStream->offset(8);
-
- uint8_t cFlags;
- if (m_pStream->read1Byte(&cFlags) != 0)
- return JBIG2_ERROR_TOO_SHORT;
-
- if (!(cFlags & 0x02)) {
- FX_DWORD dwTemp;
- if (m_pStream->readInteger(&dwTemp) != 0)
- return JBIG2_ERROR_TOO_SHORT;
-
- if (dwTemp > 0) {
- m_PageInfoList.clear();
- m_PageInfoList.resize(dwTemp);
- }
- }
-
- if (cFlags & 0x01) {
- m_nStreamType = JBIG2_SQUENTIAL_STREAM;
- return decode_SquentialOrgnazation(pPause);
- }
-
- m_nStreamType = JBIG2_RANDOM_STREAM;
- return decode_RandomOrgnazation_FirstPage(pPause);
}
int32_t CJBig2_Context::decode_SquentialOrgnazation(IFX_Pause* pPause) {
@@ -148,7 +104,7 @@ int32_t CJBig2_Context::decode_SquentialOrgnazation(IFX_Pause* pPause) {
return nRet;
}
if (m_pSegment->m_dwData_length != 0xffffffff) {
- m_dwOffset = m_dwOffset + m_pSegment->m_dwData_length;
+ m_dwOffset += m_pSegment->m_dwData_length;
m_pStream->setOffset(m_dwOffset);
} else {
m_pStream->offset(4);
@@ -217,44 +173,21 @@ int32_t CJBig2_Context::getFirstPage(uint8_t* pBuf,
return nRet;
}
}
- m_bFirstPage = TRUE;
m_PauseStep = 0;
- delete m_pPage;
- m_pPage = new CJBig2_Image(width, height, stride, pBuf);
- m_bBufSpecified = TRUE;
- if (m_pPage && pPause && pPause->NeedToPauseNow()) {
+ m_pPage.reset(new CJBig2_Image(width, height, stride, pBuf));
+ m_bBufSpecified = true;
+ if (pPause && pPause->NeedToPauseNow()) {
m_PauseStep = 1;
m_ProcessingStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
return nRet;
}
- int ret = Continue(pPause);
- return ret;
+ return Continue(pPause);
}
int32_t CJBig2_Context::Continue(IFX_Pause* pPause) {
m_ProcessingStatus = FXCODEC_STATUS_DECODE_READY;
int32_t nRet;
if (m_PauseStep <= 1) {
- switch (m_nStreamType) {
- case JBIG2_FILE_STREAM:
- nRet = decodeFile(pPause);
- break;
- case JBIG2_SQUENTIAL_STREAM:
- nRet = decode_SquentialOrgnazation(pPause);
- break;
- case JBIG2_RANDOM_STREAM:
- if (m_bFirstPage) {
- nRet = decode_RandomOrgnazation_FirstPage(pPause);
- } else {
- nRet = decode_RandomOrgnazation(pPause);
- }
- break;
- case JBIG2_EMBED_STREAM:
- nRet = decode_EmbedOrgnazation(pPause);
- break;
- default:
- m_ProcessingStatus = FXCODEC_STATUS_ERROR;
- return JBIG2_ERROR_STREAM_TYPE;
- }
+ nRet = decode_EmbedOrgnazation(pPause);
} else if (m_PauseStep == 2) {
nRet = decode_SquentialOrgnazation(pPause);
} else if (m_PauseStep == 3) {
@@ -280,19 +213,7 @@ int32_t CJBig2_Context::Continue(IFX_Pause* pPause) {
}
return nRet;
}
-int32_t CJBig2_Context::getFirstPage(CJBig2_Image** image, IFX_Pause* pPause) {
- int32_t nRet;
- m_bFirstPage = TRUE;
- m_PauseStep = 0;
- if (m_pGlobalContext) {
- nRet = m_pGlobalContext->decode_EmbedOrgnazation(pPause);
- if (nRet != JBIG2_SUCCESS) {
- return nRet;
- }
- }
- m_bBufSpecified = FALSE;
- return Continue(pPause);
-}
+
CJBig2_Segment* CJBig2_Context::findSegmentByNumber(FX_DWORD dwNumber) {
CJBig2_Segment* pSeg;
if (m_pGlobalContext) {
@@ -421,7 +342,7 @@ int32_t CJBig2_Context::ProcessingParseSegmentData(CJBig2_Segment* pSegment,
case 4:
case 6:
case 7:
- if (m_nState == JBIG2_OUT_OF_PAGE)
+ if (!m_bInPage)
return JBIG2_ERROR_FATAL;
return parseTextRegion(pSegment);
case 16:
@@ -429,19 +350,19 @@ int32_t CJBig2_Context::ProcessingParseSegmentData(CJBig2_Segment* pSegment,
case 20:
case 22:
case 23:
- if (m_nState == JBIG2_OUT_OF_PAGE)
+ if (!m_bInPage)
return JBIG2_ERROR_FATAL;
return parseHalftoneRegion(pSegment, pPause);
case 36:
case 38:
case 39:
- if (m_nState == JBIG2_OUT_OF_PAGE)
+ if (!m_bInPage)
return JBIG2_ERROR_FATAL;
return parseGenericRegion(pSegment, pPause);
case 40:
case 42:
case 43:
- if (m_nState == JBIG2_OUT_OF_PAGE)
+ if (!m_bInPage)
return JBIG2_ERROR_FATAL;
return parseGenericRefinementRegion(pSegment);
case 48: {
@@ -462,10 +383,9 @@ int32_t CJBig2_Context::ProcessingParseSegmentData(CJBig2_Segment* pSegment,
pPageInfo->m_bIsStriped = TRUE;
if (!m_bBufSpecified) {
- delete m_pPage;
FX_DWORD height =
bMaxHeight ? pPageInfo->m_wMaxStripeSize : pPageInfo->m_dwHeight;
- m_pPage = new CJBig2_Image(pPageInfo->m_dwWidth, height);
+ m_pPage.reset(new CJBig2_Image(pPageInfo->m_dwWidth, height));
}
if (!m_pPage->m_pData) {
@@ -475,10 +395,10 @@ int32_t CJBig2_Context::ProcessingParseSegmentData(CJBig2_Segment* pSegment,
m_pPage->fill((pPageInfo->m_cFlags & 4) ? 1 : 0);
m_PageInfoList.push_back(pPageInfo.release());
- m_nState = JBIG2_IN_PAGE;
+ m_bInPage = true;
} break;
case 49:
- m_nState = JBIG2_OUT_OF_PAGE;
+ m_bInPage = false;
return JBIG2_END_OF_PAGE;
break;
case 50:
@@ -709,7 +629,7 @@ int32_t CJBig2_Context::parseSymbolDict(CJBig2_Segment* pSegment,
}
if (!cache_hit) {
if (pSymbolDictDecoder->SDHUFF == 0) {
- pArithDecoder = new CJBig2_ArithDecoder(m_pStream);
+ pArithDecoder = new CJBig2_ArithDecoder(m_pStream.get());
pSegment->m_Result.sd =
pSymbolDictDecoder->decode_Arith(pArithDecoder, gbContext, grContext);
delete pArithDecoder;
@@ -721,7 +641,7 @@ int32_t CJBig2_Context::parseSymbolDict(CJBig2_Segment* pSegment,
m_pStream->offset(2);
} else {
pSegment->m_Result.sd = pSymbolDictDecoder->decode_Huffman(
- m_pStream, gbContext, grContext, pPause);
+ m_pStream.get(), gbContext, grContext, pPause);
if (pSegment->m_Result.sd == NULL) {
nRet = JBIG2_ERROR_FATAL;
goto failed;
@@ -873,7 +793,7 @@ int32_t CJBig2_Context::parseTextRegion(CJBig2_Segment* pSegment) {
pTRD->SBSYMS = NULL;
}
if (pTRD->SBHUFF == 1) {
- SBSYMCODES = decodeSymbolIDHuffmanTable(m_pStream, pTRD->SBNUMSYMS);
+ SBSYMCODES = decodeSymbolIDHuffmanTable(m_pStream.get(), pTRD->SBNUMSYMS);
if (SBSYMCODES == NULL) {
nRet = JBIG2_ERROR_FATAL;
goto failed;
@@ -1062,7 +982,7 @@ int32_t CJBig2_Context::parseTextRegion(CJBig2_Segment* pSegment) {
JBIG2_memset(grContext, 0, sizeof(JBig2ArithCtx) * dwTemp);
}
if (pTRD->SBHUFF == 0) {
- pArithDecoder = new CJBig2_ArithDecoder(m_pStream);
+ pArithDecoder = new CJBig2_ArithDecoder(m_pStream.get());
pSegment->m_nResultType = JBIG2_IMAGE_POINTER;
pSegment->m_Result.im = pTRD->decode_Arith(pArithDecoder, grContext);
delete pArithDecoder;
@@ -1074,7 +994,7 @@ int32_t CJBig2_Context::parseTextRegion(CJBig2_Segment* pSegment) {
m_pStream->offset(2);
} else {
pSegment->m_nResultType = JBIG2_IMAGE_POINTER;
- pSegment->m_Result.im = pTRD->decode_Huffman(m_pStream, grContext);
+ pSegment->m_Result.im = pTRD->decode_Huffman(m_pStream.get(), grContext);
if (pSegment->m_Result.im == NULL) {
nRet = JBIG2_ERROR_FATAL;
goto failed;
@@ -1156,7 +1076,7 @@ int32_t CJBig2_Context::parsePatternDict(CJBig2_Segment* pSegment,
pPDD->HDTEMPLATE == 0 ? 65536 : pPDD->HDTEMPLATE == 1 ? 8192 : 1024;
gbContext = FX_Alloc(JBig2ArithCtx, dwTemp);
JBIG2_memset(gbContext, 0, sizeof(JBig2ArithCtx) * dwTemp);
- pArithDecoder = new CJBig2_ArithDecoder(m_pStream);
+ pArithDecoder = new CJBig2_ArithDecoder(m_pStream.get());
pSegment->m_Result.pd =
pPDD->decode_Arith(pArithDecoder, gbContext, pPause);
delete pArithDecoder;
@@ -1169,7 +1089,7 @@ int32_t CJBig2_Context::parsePatternDict(CJBig2_Segment* pSegment,
m_pStream->alignByte();
m_pStream->offset(2);
} else {
- pSegment->m_Result.pd = pPDD->decode_MMR(m_pStream, pPause);
+ pSegment->m_Result.pd = pPDD->decode_MMR(m_pStream.get(), pPause);
if (pSegment->m_Result.pd == NULL) {
nRet = JBIG2_ERROR_FATAL;
goto failed;
@@ -1234,7 +1154,7 @@ int32_t CJBig2_Context::parseHalftoneRegion(CJBig2_Segment* pSegment,
dwTemp = pHRD->HTEMPLATE == 0 ? 65536 : pHRD->HTEMPLATE == 1 ? 8192 : 1024;
gbContext = FX_Alloc(JBig2ArithCtx, dwTemp);
JBIG2_memset(gbContext, 0, sizeof(JBig2ArithCtx) * dwTemp);
- pArithDecoder = new CJBig2_ArithDecoder(m_pStream);
+ pArithDecoder = new CJBig2_ArithDecoder(m_pStream.get());
pSegment->m_Result.im =
pHRD->decode_Arith(pArithDecoder, gbContext, pPause);
delete pArithDecoder;
@@ -1247,7 +1167,7 @@ int32_t CJBig2_Context::parseHalftoneRegion(CJBig2_Segment* pSegment,
m_pStream->alignByte();
m_pStream->offset(2);
} else {
- pSegment->m_Result.im = pHRD->decode_MMR(m_pStream, pPause);
+ pSegment->m_Result.im = pHRD->decode_MMR(m_pStream.get(), pPause);
if (pSegment->m_Result.im == NULL) {
nRet = JBIG2_ERROR_FATAL;
goto failed;
@@ -1279,8 +1199,8 @@ int32_t CJBig2_Context::parseGenericRegion(CJBig2_Segment* pSegment,
FX_DWORD dwTemp;
uint8_t cFlags;
int32_t i, nRet;
- if (m_pGRD == NULL) {
- m_pGRD = new CJBig2_GRDProc();
+ if (!m_pGRD) {
+ m_pGRD.reset(new CJBig2_GRDProc);
if ((parseRegionInfo(&m_ri) != JBIG2_SUCCESS) ||
(m_pStream->read1Byte(&cFlags) != 0)) {
nRet = JBIG2_ERROR_TOO_SHORT;
@@ -1323,7 +1243,7 @@ int32_t CJBig2_Context::parseGenericRegion(CJBig2_Segment* pSegment,
JBIG2_memset(m_gbContext, 0, sizeof(JBig2ArithCtx) * dwTemp);
}
if (m_pArithDecoder == NULL) {
- m_pArithDecoder = new CJBig2_ArithDecoder(m_pStream);
+ m_pArithDecoder = new CJBig2_ArithDecoder(m_pStream.get());
m_ProcessingStatus = m_pGRD->Start_decode_Arith(
&pSegment->m_Result.im, m_pArithDecoder, m_gbContext, pPause);
} else {
@@ -1361,8 +1281,8 @@ int32_t CJBig2_Context::parseGenericRegion(CJBig2_Segment* pSegment,
m_pStream->offset(2);
}
} else {
- FXCODEC_STATUS status =
- m_pGRD->Start_decode_MMR(&pSegment->m_Result.im, m_pStream, pPause);
+ FXCODEC_STATUS status = m_pGRD->Start_decode_MMR(&pSegment->m_Result.im,
+ m_pStream.get(), pPause);
while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
m_pGRD->Continue_decode(pPause);
}
@@ -1388,12 +1308,10 @@ int32_t CJBig2_Context::parseGenericRegion(CJBig2_Segment* pSegment,
delete pSegment->m_Result.im;
pSegment->m_Result.im = NULL;
}
- delete m_pGRD;
- m_pGRD = NULL;
+ m_pGRD.reset();
return JBIG2_SUCCESS;
failed:
- delete m_pGRD;
- m_pGRD = NULL;
+ m_pGRD.reset();
return nRet;
}
@@ -1442,14 +1360,14 @@ int32_t CJBig2_Context::parseGenericRefinementRegion(CJBig2_Segment* pSegment) {
}
pGRRD->GRREFERENCE = pSeg->m_Result.im;
} else {
- pGRRD->GRREFERENCE = m_pPage;
+ pGRRD->GRREFERENCE = m_pPage.get();
}
pGRRD->GRREFERENCEDX = 0;
pGRRD->GRREFERENCEDY = 0;
dwTemp = pGRRD->GRTEMPLATE ? 1 << 10 : 1 << 13;
grContext = FX_Alloc(JBig2ArithCtx, dwTemp);
JBIG2_memset(grContext, 0, sizeof(JBig2ArithCtx) * dwTemp);
- pArithDecoder = new CJBig2_ArithDecoder(m_pStream);
+ pArithDecoder = new CJBig2_ArithDecoder(m_pStream.get());
pSegment->m_nResultType = JBIG2_IMAGE_POINTER;
pSegment->m_Result.im = pGRRD->decode(pArithDecoder, grContext);
delete pArithDecoder;
@@ -1482,7 +1400,7 @@ failed:
}
int32_t CJBig2_Context::parseTable(CJBig2_Segment* pSegment) {
pSegment->m_nResultType = JBIG2_HUFFMAN_TABLE_POINTER;
- pSegment->m_Result.ht = new CJBig2_HuffmanTable(m_pStream);
+ pSegment->m_Result.ht = new CJBig2_HuffmanTable(m_pStream.get());
if (!pSegment->m_Result.ht->isOK()) {
delete pSegment->m_Result.ht;
pSegment->m_Result.ht = NULL;
diff --git a/core/src/fxcodec/jbig2/JBig2_Context.h b/core/src/fxcodec/jbig2/JBig2_Context.h
index 48bc794205..8681609ca0 100644
--- a/core/src/fxcodec/jbig2/JBig2_Context.h
+++ b/core/src/fxcodec/jbig2/JBig2_Context.h
@@ -30,10 +30,6 @@ using CJBig2_CachePair = std::pair<const uint8_t*, CJBig2_SymbolDict*>;
#define JBIG2_ERROR_FILE_FORMAT -4
#define JBIG2_ERROR_STREAM_TYPE -5
#define JBIG2_ERROR_LIMIT -6
-#define JBIG2_FILE_STREAM 0
-#define JBIG2_SQUENTIAL_STREAM 1
-#define JBIG2_RANDOM_STREAM 2
-#define JBIG2_EMBED_STREAM 3
#define JBIG2_MIN_SEGMENT_SIZE 11
class CJBig2_Context {
@@ -43,7 +39,6 @@ class CJBig2_Context {
FX_DWORD dwGlobalLength,
const uint8_t* pData,
FX_DWORD dwLength,
- int32_t nStreamType,
std::list<CJBig2_CachePair>* pSymbolDictCache,
IFX_Pause* pPause = NULL);
@@ -55,29 +50,19 @@ class CJBig2_Context {
int32_t stride,
IFX_Pause* pPause);
- int32_t getFirstPage(CJBig2_Image** image, IFX_Pause* pPause);
-
int32_t Continue(IFX_Pause* pPause);
FXCODEC_STATUS GetProcessingStatus() { return m_ProcessingStatus; }
private:
- enum JBig2State {
- JBIG2_OUT_OF_PAGE = 0,
- JBIG2_IN_PAGE,
- };
-
CJBig2_Context(const uint8_t* pGlobalData,
FX_DWORD dwGlobalLength,
const uint8_t* pData,
FX_DWORD dwLength,
- int32_t nStreamType,
std::list<CJBig2_CachePair>* pSymbolDictCache,
IFX_Pause* pPause);
~CJBig2_Context();
- int32_t decodeFile(IFX_Pause* pPause);
-
int32_t decode_SquentialOrgnazation(IFX_Pause* pPause);
int32_t decode_EmbedOrgnazation(IFX_Pause* pPause);
@@ -123,25 +108,23 @@ class CJBig2_Context {
private:
CJBig2_Context* m_pGlobalContext;
- int32_t m_nStreamType;
- CJBig2_BitStream* m_pStream;
- int32_t m_nState;
+ nonstd::unique_ptr<CJBig2_BitStream> m_pStream;
CJBig2_List<CJBig2_Segment> m_SegmentList;
CJBig2_List<JBig2PageInfo> m_PageInfoList;
- CJBig2_Image* m_pPage;
- FX_BOOL m_bBufSpecified;
+ nonstd::unique_ptr<CJBig2_Image> m_pPage;
size_t m_nSegmentDecoded;
- IFX_Pause* m_pPause;
+ bool m_bInPage;
+ bool m_bBufSpecified;
int32_t m_PauseStep;
+ IFX_Pause* m_pPause;
FXCODEC_STATUS m_ProcessingStatus;
- FX_BOOL m_bFirstPage;
CJBig2_ArithDecoder* m_pArithDecoder;
- CJBig2_GRDProc* m_pGRD;
+ nonstd::unique_ptr<CJBig2_GRDProc> m_pGRD;
JBig2ArithCtx* m_gbContext;
nonstd::unique_ptr<CJBig2_Segment> m_pSegment;
FX_DWORD m_dwOffset;
JBig2RegionInfo m_ri;
- std::list<CJBig2_CachePair>* m_pSymbolDictCache;
+ std::list<CJBig2_CachePair>* const m_pSymbolDictCache;
};
#endif // CORE_SRC_FXCODEC_JBIG2_JBIG2_CONTEXT_H_
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 04:46:23 +0000