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Diffstat (limited to 'core/src/fxcodec/codec/fx_codec.cpp')
-rw-r--r--core/src/fxcodec/codec/fx_codec.cpp1439
1 files changed, 719 insertions, 720 deletions
diff --git a/core/src/fxcodec/codec/fx_codec.cpp b/core/src/fxcodec/codec/fx_codec.cpp
index 96366fae2b..1ef85f91f0 100644
--- a/core/src/fxcodec/codec/fx_codec.cpp
+++ b/core/src/fxcodec/codec/fx_codec.cpp
@@ -8,748 +8,747 @@
#include "codec_int.h"
CCodec_ModuleMgr::CCodec_ModuleMgr()
- : m_pBasicModule(new CCodec_BasicModule),
- m_pFaxModule(new CCodec_FaxModule),
- m_pJpegModule(new CCodec_JpegModule),
- m_pJpxModule(new CCodec_JpxModule),
- m_pJbig2Module(new CCodec_Jbig2Module),
- m_pIccModule(new CCodec_IccModule),
- m_pFlateModule(new CCodec_FlateModule),
- m_pPngModule(new CCodec_PngModule),
- m_pGifModule(new CCodec_GifModule),
- m_pBmpModule(new CCodec_BmpModule),
- m_pTiffModule(new CCodec_TiffModule) {
-}
-CCodec_ScanlineDecoder::CCodec_ScanlineDecoder()
-{
- m_NextLine = -1;
- m_pDataCache = NULL;
- m_pLastScanline = NULL;
-}
-CCodec_ScanlineDecoder::~CCodec_ScanlineDecoder()
-{
- if (m_pDataCache) {
- FX_Free(m_pDataCache);
- }
-}
-uint8_t* CCodec_ScanlineDecoder::GetScanline(int line)
-{
- if (m_pDataCache && line < m_pDataCache->m_nCachedLines) {
- return &m_pDataCache->m_Data + line * m_Pitch;
- }
- if (m_NextLine == line + 1) {
- return m_pLastScanline;
- }
- if (m_NextLine < 0 || m_NextLine > line) {
- if (!v_Rewind()) {
- return NULL;
- }
- m_NextLine = 0;
- }
- while (m_NextLine < line) {
- ReadNextLine();
- m_NextLine ++;
- }
- m_pLastScanline = ReadNextLine();
- m_NextLine ++;
+ : m_pBasicModule(new CCodec_BasicModule),
+ m_pFaxModule(new CCodec_FaxModule),
+ m_pJpegModule(new CCodec_JpegModule),
+ m_pJpxModule(new CCodec_JpxModule),
+ m_pJbig2Module(new CCodec_Jbig2Module),
+ m_pIccModule(new CCodec_IccModule),
+ m_pFlateModule(new CCodec_FlateModule),
+ m_pPngModule(new CCodec_PngModule),
+ m_pGifModule(new CCodec_GifModule),
+ m_pBmpModule(new CCodec_BmpModule),
+ m_pTiffModule(new CCodec_TiffModule) {}
+CCodec_ScanlineDecoder::CCodec_ScanlineDecoder() {
+ m_NextLine = -1;
+ m_pDataCache = NULL;
+ m_pLastScanline = NULL;
+}
+CCodec_ScanlineDecoder::~CCodec_ScanlineDecoder() {
+ if (m_pDataCache) {
+ FX_Free(m_pDataCache);
+ }
+}
+uint8_t* CCodec_ScanlineDecoder::GetScanline(int line) {
+ if (m_pDataCache && line < m_pDataCache->m_nCachedLines) {
+ return &m_pDataCache->m_Data + line * m_Pitch;
+ }
+ if (m_NextLine == line + 1) {
return m_pLastScanline;
-}
-FX_BOOL CCodec_ScanlineDecoder::SkipToScanline(int line, IFX_Pause* pPause)
-{
- if (m_pDataCache && line < m_pDataCache->m_nCachedLines) {
- return FALSE;
- }
- if (m_NextLine == line || m_NextLine == line + 1) {
- return FALSE;
- }
- if (m_NextLine < 0 || m_NextLine > line) {
- v_Rewind();
- m_NextLine = 0;
- }
- m_pLastScanline = NULL;
- while (m_NextLine < line) {
- m_pLastScanline = ReadNextLine();
- m_NextLine ++;
- if (pPause && pPause->NeedToPauseNow()) {
- return TRUE;
- }
- }
+ }
+ if (m_NextLine < 0 || m_NextLine > line) {
+ if (!v_Rewind()) {
+ return NULL;
+ }
+ m_NextLine = 0;
+ }
+ while (m_NextLine < line) {
+ ReadNextLine();
+ m_NextLine++;
+ }
+ m_pLastScanline = ReadNextLine();
+ m_NextLine++;
+ return m_pLastScanline;
+}
+FX_BOOL CCodec_ScanlineDecoder::SkipToScanline(int line, IFX_Pause* pPause) {
+ if (m_pDataCache && line < m_pDataCache->m_nCachedLines) {
return FALSE;
-}
-uint8_t* CCodec_ScanlineDecoder::ReadNextLine()
-{
- uint8_t* pLine = v_GetNextLine();
- if (pLine == NULL) {
- return NULL;
- }
- if (m_pDataCache && m_NextLine == m_pDataCache->m_nCachedLines) {
- FXSYS_memcpy(&m_pDataCache->m_Data + m_NextLine * m_Pitch, pLine, m_Pitch);
- m_pDataCache->m_nCachedLines ++;
- }
- return pLine;
-}
-void CCodec_ScanlineDecoder::DownScale(int dest_width, int dest_height)
-{
- if (dest_width < 0) {
- dest_width = -dest_width;
- }
- if (dest_height < 0) {
- dest_height = -dest_height;
- }
- v_DownScale(dest_width, dest_height);
- if (m_pDataCache) {
- if (m_pDataCache->m_Height == m_OutputHeight && m_pDataCache->m_Width == m_OutputWidth) {
- return;
- }
- FX_Free(m_pDataCache);
- m_pDataCache = NULL;
- }
- m_pDataCache = (CCodec_ImageDataCache*)FX_TryAlloc(uint8_t, sizeof(CCodec_ImageDataCache) + m_Pitch * m_OutputHeight);
- if (m_pDataCache == NULL) {
- return;
- }
- m_pDataCache->m_Height = m_OutputHeight;
- m_pDataCache->m_Width = m_OutputWidth;
- m_pDataCache->m_nCachedLines = 0;
-}
-FX_BOOL CCodec_BasicModule::RunLengthEncode(const uint8_t* src_buf, FX_DWORD src_size, uint8_t*& dest_buf,
- FX_DWORD& dest_size)
-{
+ }
+ if (m_NextLine == line || m_NextLine == line + 1) {
return FALSE;
-}
-extern "C" double FXstrtod(const char* nptr, char** endptr)
-{
- double ret = 0.0;
- const char* ptr = nptr;
- const char* exp_ptr = NULL;
- int e_number = 0,
- e_signal = 0,
- e_point = 0,
- is_negative = 0;
- int exp_ret = 0, exp_sig = 1,
- fra_ret = 0, fra_count = 0, fra_base = 1;
- if(nptr == NULL) {
- return 0.0;
- }
- for (;; ptr++) {
- if(!e_number && !e_point && (*ptr == '\t' || *ptr == ' ')) {
- continue;
- }
- if(*ptr >= '0' && *ptr <= '9') {
- if(!e_number) {
- e_number = 1;
- }
- if(!e_point) {
- ret *= 10;
- ret += (*ptr - '0');
- } else {
- fra_count++;
- fra_ret *= 10;
- fra_ret += (*ptr - '0');
- }
- continue;
- }
- if(!e_point && *ptr == '.') {
- e_point = 1;
- continue;
- }
- if(!e_number && !e_point && !e_signal) {
- switch(*ptr) {
- case '-':
- is_negative = 1;
- case '+':
- e_signal = 1;
- continue;
- }
- }
- if(e_number && (*ptr == 'e' || *ptr == 'E')) {
-#define EXPONENT_DETECT(ptr) \
- for(;;ptr++){ \
- if(*ptr < '0' || *ptr > '9'){ \
- if(endptr) *endptr = (char*)ptr; \
- break; \
- }else{ \
- exp_ret *= 10; \
- exp_ret += (*ptr - '0'); \
- continue; \
- } \
- }
- exp_ptr = ptr++;
- if(*ptr == '+' || *ptr == '-') {
- exp_sig = (*ptr++ == '+') ? 1 : -1;
- if(*ptr < '0' || *ptr > '9') {
- if(endptr) {
- *endptr = (char*)exp_ptr;
- }
- break;
- }
- EXPONENT_DETECT(ptr);
- } else if(*ptr >= '0' && *ptr <= '9') {
- EXPONENT_DETECT(ptr);
- } else {
- if(endptr) {
- *endptr = (char*)exp_ptr;
- }
- break;
- }
-#undef EXPONENT_DETECT
- break;
- }
- if(ptr != nptr && !e_number) {
- if(endptr) {
- *endptr = (char*)nptr;
- }
- break;
+ }
+ if (m_NextLine < 0 || m_NextLine > line) {
+ v_Rewind();
+ m_NextLine = 0;
+ }
+ m_pLastScanline = NULL;
+ while (m_NextLine < line) {
+ m_pLastScanline = ReadNextLine();
+ m_NextLine++;
+ if (pPause && pPause->NeedToPauseNow()) {
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+uint8_t* CCodec_ScanlineDecoder::ReadNextLine() {
+ uint8_t* pLine = v_GetNextLine();
+ if (pLine == NULL) {
+ return NULL;
+ }
+ if (m_pDataCache && m_NextLine == m_pDataCache->m_nCachedLines) {
+ FXSYS_memcpy(&m_pDataCache->m_Data + m_NextLine * m_Pitch, pLine, m_Pitch);
+ m_pDataCache->m_nCachedLines++;
+ }
+ return pLine;
+}
+void CCodec_ScanlineDecoder::DownScale(int dest_width, int dest_height) {
+ if (dest_width < 0) {
+ dest_width = -dest_width;
+ }
+ if (dest_height < 0) {
+ dest_height = -dest_height;
+ }
+ v_DownScale(dest_width, dest_height);
+ if (m_pDataCache) {
+ if (m_pDataCache->m_Height == m_OutputHeight &&
+ m_pDataCache->m_Width == m_OutputWidth) {
+ return;
+ }
+ FX_Free(m_pDataCache);
+ m_pDataCache = NULL;
+ }
+ m_pDataCache = (CCodec_ImageDataCache*)FX_TryAlloc(
+ uint8_t, sizeof(CCodec_ImageDataCache) + m_Pitch * m_OutputHeight);
+ if (m_pDataCache == NULL) {
+ return;
+ }
+ m_pDataCache->m_Height = m_OutputHeight;
+ m_pDataCache->m_Width = m_OutputWidth;
+ m_pDataCache->m_nCachedLines = 0;
+}
+FX_BOOL CCodec_BasicModule::RunLengthEncode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) {
+ return FALSE;
+}
+extern "C" double FXstrtod(const char* nptr, char** endptr) {
+ double ret = 0.0;
+ const char* ptr = nptr;
+ const char* exp_ptr = NULL;
+ int e_number = 0, e_signal = 0, e_point = 0, is_negative = 0;
+ int exp_ret = 0, exp_sig = 1, fra_ret = 0, fra_count = 0, fra_base = 1;
+ if (nptr == NULL) {
+ return 0.0;
+ }
+ for (;; ptr++) {
+ if (!e_number && !e_point && (*ptr == '\t' || *ptr == ' ')) {
+ continue;
+ }
+ if (*ptr >= '0' && *ptr <= '9') {
+ if (!e_number) {
+ e_number = 1;
+ }
+ if (!e_point) {
+ ret *= 10;
+ ret += (*ptr - '0');
+ } else {
+ fra_count++;
+ fra_ret *= 10;
+ fra_ret += (*ptr - '0');
+ }
+ continue;
+ }
+ if (!e_point && *ptr == '.') {
+ e_point = 1;
+ continue;
+ }
+ if (!e_number && !e_point && !e_signal) {
+ switch (*ptr) {
+ case '-':
+ is_negative = 1;
+ case '+':
+ e_signal = 1;
+ continue;
+ }
+ }
+ if (e_number && (*ptr == 'e' || *ptr == 'E')) {
+#define EXPONENT_DETECT(ptr) \
+ for (;; ptr++) { \
+ if (*ptr < '0' || *ptr > '9') { \
+ if (endptr) \
+ *endptr = (char*)ptr; \
+ break; \
+ } else { \
+ exp_ret *= 10; \
+ exp_ret += (*ptr - '0'); \
+ continue; \
+ } \
+ }
+ exp_ptr = ptr++;
+ if (*ptr == '+' || *ptr == '-') {
+ exp_sig = (*ptr++ == '+') ? 1 : -1;
+ if (*ptr < '0' || *ptr > '9') {
+ if (endptr) {
+ *endptr = (char*)exp_ptr;
+ }
+ break;
}
- if(endptr) {
- *endptr = (char*)ptr;
+ EXPONENT_DETECT(ptr);
+ } else if (*ptr >= '0' && *ptr <= '9') {
+ EXPONENT_DETECT(ptr);
+ } else {
+ if (endptr) {
+ *endptr = (char*)exp_ptr;
}
break;
- }
- while(fra_count--) {
- fra_base *= 10;
- }
- ret += (double)fra_ret / (double)fra_base;
- if(exp_sig == 1) {
- while(exp_ret--) {
- ret *= 10.0;
- }
- } else {
- while(exp_ret--) {
- ret /= 10.0;
- }
- }
- return is_negative ? -ret : ret;
-}
-FX_BOOL CCodec_BasicModule::A85Encode(const uint8_t* src_buf, FX_DWORD src_size, uint8_t*& dest_buf,
- FX_DWORD& dest_size)
-{
- return FALSE;
-}
-CFX_DIBAttribute::CFX_DIBAttribute()
-{
- FXSYS_memset(this, 0, sizeof(CFX_DIBAttribute));
- m_nXDPI = -1;
- m_nYDPI = -1;
- m_fAspectRatio = -1.0f;
- m_pExif = new CFX_DIBAttributeExif;
-}
-CFX_DIBAttribute::~CFX_DIBAttribute()
-{
- if (m_pExif) {
- delete m_pExif;
- }
-}
-CFX_DIBAttributeExif::CFX_DIBAttributeExif()
-{
- m_pExifData = NULL;
- m_dwExifDataLen = 0;
-}
-CFX_DIBAttributeExif::~CFX_DIBAttributeExif()
-{
- clear();
-}
-void CFX_DIBAttributeExif::clear()
-{
- if (m_pExifData) {
- FX_Free(m_pExifData);
- }
- m_pExifData = NULL;
- FX_DWORD key = 0;
- uint8_t* buf = NULL;
- FX_POSITION pos = NULL;
- pos = m_TagHead.GetStartPosition();
- while (pos) {
- m_TagHead.GetNextAssoc(pos, key, buf);
- if (buf) {
- FX_Free(buf);
- }
- }
- m_TagHead.RemoveAll();
- pos = m_TagVal.GetStartPosition();
- while (pos) {
- m_TagVal.GetNextAssoc(pos, key, buf);
- if (buf) {
- FX_Free(buf);
- }
- }
- m_TagVal.RemoveAll();
-}
-static FX_WORD _Read2BytesL(uint8_t* data)
-{
- ASSERT(data);
- return data[0] | (data[1] << 8);
-}
-static FX_WORD _Read2BytesB(uint8_t* data)
-{
- ASSERT(data);
- return data[1] | (data[0] << 8);
-}
-static FX_DWORD _Read4BytesL(uint8_t* data)
-{
- return _Read2BytesL(data) | (_Read2BytesL(data + 2) << 16);
-}
-static FX_DWORD _Read4BytesB(uint8_t* data)
-{
- return _Read2BytesB(data + 2) | (_Read2BytesB(data) << 16);
-}
-typedef FX_WORD (*_Read2Bytes) (uint8_t* data);
-typedef FX_DWORD (*_Read4Bytes) (uint8_t* data);
-typedef void (*_Write2Bytes) (uint8_t* data, FX_WORD val);
-typedef void (*_Write4Bytes) (uint8_t* data, FX_DWORD val);
-uint8_t* CFX_DIBAttributeExif::ParseExifIFH(uint8_t* data, FX_DWORD len, _Read2Bytes* pReadWord, _Read4Bytes* pReadDword)
-{
+ }
+#undef EXPONENT_DETECT
+ break;
+ }
+ if (ptr != nptr && !e_number) {
+ if (endptr) {
+ *endptr = (char*)nptr;
+ }
+ break;
+ }
+ if (endptr) {
+ *endptr = (char*)ptr;
+ }
+ break;
+ }
+ while (fra_count--) {
+ fra_base *= 10;
+ }
+ ret += (double)fra_ret / (double)fra_base;
+ if (exp_sig == 1) {
+ while (exp_ret--) {
+ ret *= 10.0;
+ }
+ } else {
+ while (exp_ret--) {
+ ret /= 10.0;
+ }
+ }
+ return is_negative ? -ret : ret;
+}
+FX_BOOL CCodec_BasicModule::A85Encode(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ uint8_t*& dest_buf,
+ FX_DWORD& dest_size) {
+ return FALSE;
+}
+CFX_DIBAttribute::CFX_DIBAttribute() {
+ FXSYS_memset(this, 0, sizeof(CFX_DIBAttribute));
+ m_nXDPI = -1;
+ m_nYDPI = -1;
+ m_fAspectRatio = -1.0f;
+ m_pExif = new CFX_DIBAttributeExif;
+}
+CFX_DIBAttribute::~CFX_DIBAttribute() {
+ if (m_pExif) {
+ delete m_pExif;
+ }
+}
+CFX_DIBAttributeExif::CFX_DIBAttributeExif() {
+ m_pExifData = NULL;
+ m_dwExifDataLen = 0;
+}
+CFX_DIBAttributeExif::~CFX_DIBAttributeExif() {
+ clear();
+}
+void CFX_DIBAttributeExif::clear() {
+ if (m_pExifData) {
+ FX_Free(m_pExifData);
+ }
+ m_pExifData = NULL;
+ FX_DWORD key = 0;
+ uint8_t* buf = NULL;
+ FX_POSITION pos = NULL;
+ pos = m_TagHead.GetStartPosition();
+ while (pos) {
+ m_TagHead.GetNextAssoc(pos, key, buf);
+ if (buf) {
+ FX_Free(buf);
+ }
+ }
+ m_TagHead.RemoveAll();
+ pos = m_TagVal.GetStartPosition();
+ while (pos) {
+ m_TagVal.GetNextAssoc(pos, key, buf);
+ if (buf) {
+ FX_Free(buf);
+ }
+ }
+ m_TagVal.RemoveAll();
+}
+static FX_WORD _Read2BytesL(uint8_t* data) {
+ ASSERT(data);
+ return data[0] | (data[1] << 8);
+}
+static FX_WORD _Read2BytesB(uint8_t* data) {
+ ASSERT(data);
+ return data[1] | (data[0] << 8);
+}
+static FX_DWORD _Read4BytesL(uint8_t* data) {
+ return _Read2BytesL(data) | (_Read2BytesL(data + 2) << 16);
+}
+static FX_DWORD _Read4BytesB(uint8_t* data) {
+ return _Read2BytesB(data + 2) | (_Read2BytesB(data) << 16);
+}
+typedef FX_WORD (*_Read2Bytes)(uint8_t* data);
+typedef FX_DWORD (*_Read4Bytes)(uint8_t* data);
+typedef void (*_Write2Bytes)(uint8_t* data, FX_WORD val);
+typedef void (*_Write4Bytes)(uint8_t* data, FX_DWORD val);
+uint8_t* CFX_DIBAttributeExif::ParseExifIFH(uint8_t* data,
+ FX_DWORD len,
+ _Read2Bytes* pReadWord,
+ _Read4Bytes* pReadDword) {
+ if (len > 8) {
+ FX_BOOL tag = FALSE;
+ if (FXSYS_memcmp(data, "\x49\x49\x2a\x00", 4) == 0) {
+ if (pReadWord) {
+ *pReadWord = _Read2BytesL;
+ }
+ if (pReadDword) {
+ *pReadDword = _Read4BytesL;
+ }
+ tag = TRUE;
+ } else if (FXSYS_memcmp(data, "\x4d\x4d\x00\x2a", 4) == 0) {
+ if (pReadWord) {
+ *pReadWord = _Read2BytesB;
+ }
+ if (pReadDword) {
+ *pReadDword = _Read4BytesB;
+ }
+ tag = TRUE;
+ }
+ if (tag) {
+ data += 4;
+ if (pReadDword) {
+ data += (*pReadDword)(data)-4;
+ } else {
+ data += 4;
+ }
+ }
+ }
+ return data;
+}
+FX_BOOL CFX_DIBAttributeExif::ParseExifIFD(
+ CFX_MapPtrTemplate<FX_DWORD, uint8_t*>* pMap,
+ uint8_t* data,
+ FX_DWORD len) {
+ if (pMap && data) {
if (len > 8) {
- FX_BOOL tag = FALSE;
- if (FXSYS_memcmp(data, "\x49\x49\x2a\x00", 4) == 0) {
- if (pReadWord) {
- *pReadWord = _Read2BytesL;
- }
- if (pReadDword) {
- *pReadDword = _Read4BytesL;
- }
- tag = TRUE;
- } else if (FXSYS_memcmp(data, "\x4d\x4d\x00\x2a", 4) == 0) {
- if (pReadWord) {
- *pReadWord = _Read2BytesB;
- }
- if (pReadDword) {
- *pReadDword = _Read4BytesB;
- }
- tag = TRUE;
- }
- if (tag) {
- data += 4;
- if (pReadDword) {
- data += (*pReadDword)(data) - 4;
- } else {
- data += 4;
- }
+ FX_WORD wTagNum = m_readWord(data);
+ data += 2;
+ FX_DWORD wTag;
+ uint8_t* buf;
+ while (wTagNum--) {
+ wTag = m_readWord(data);
+ data += 2;
+ if (!pMap->Lookup(wTag, buf)) {
+ buf = FX_Alloc(uint8_t, 10);
+ if (buf == NULL) {
+ return FALSE;
+ }
+ FXSYS_memcpy(buf, data, 10);
+ pMap->SetAt(wTag, buf);
}
- }
- return data;
-}
-FX_BOOL CFX_DIBAttributeExif::ParseExifIFD(CFX_MapPtrTemplate<FX_DWORD, uint8_t*>* pMap, uint8_t* data, FX_DWORD len)
-{
- if (pMap && data) {
- if (len > 8) {
- FX_WORD wTagNum = m_readWord(data);
- data += 2;
- FX_DWORD wTag;
- uint8_t* buf;
- while (wTagNum--) {
- wTag = m_readWord(data);
- data += 2;
- if (!pMap->Lookup(wTag, buf)) {
- buf = FX_Alloc(uint8_t, 10);
- if (buf == NULL) {
- return FALSE;
- }
- FXSYS_memcpy(buf, data, 10);
- pMap->SetAt(wTag, buf);
- }
- data += 10;
+ data += 10;
+ }
+ FX_DWORD dwIFDOffset;
+ dwIFDOffset = m_readDword(data);
+ while (dwIFDOffset && dwIFDOffset < len) {
+ data = m_pExifData + dwIFDOffset;
+ wTagNum = m_readWord(data);
+ data += 2;
+ while (wTagNum--) {
+ wTag = m_readWord(data);
+ data += 2;
+ if (!pMap->Lookup(wTag, buf)) {
+ buf = FX_Alloc(uint8_t, 10);
+ if (buf == NULL) {
+ return FALSE;
}
- FX_DWORD dwIFDOffset;
- dwIFDOffset = m_readDword(data);
- while (dwIFDOffset && dwIFDOffset < len) {
- data = m_pExifData + dwIFDOffset;
- wTagNum = m_readWord(data);
- data += 2;
- while (wTagNum--) {
- wTag = m_readWord(data);
- data += 2;
- if (!pMap->Lookup(wTag, buf)) {
- buf = FX_Alloc(uint8_t, 10);
- if (buf == NULL) {
- return FALSE;
- }
- FXSYS_memcpy(buf, data, 10);
- pMap->SetAt(wTag, buf);
- }
- data += 10;
- }
- dwIFDOffset = m_readDword(data);
- }
- return TRUE;
+ FXSYS_memcpy(buf, data, 10);
+ pMap->SetAt(wTag, buf);
+ }
+ data += 10;
}
+ dwIFDOffset = m_readDword(data);
+ }
+ return TRUE;
}
- return FALSE;
+ }
+ return FALSE;
}
enum FX_ExifDataType {
- FX_UnsignedByte = 1,
- FX_AscString,
- FX_UnsignedShort,
- FX_UnsignedLong,
- FX_UnsignedRation,
- FX_SignedByte,
- FX_Undefined,
- FX_SignedShort,
- FX_SignedLong,
- FX_SignedRation,
- FX_SignedFloat,
- FX_DoubleFloat
+ FX_UnsignedByte = 1,
+ FX_AscString,
+ FX_UnsignedShort,
+ FX_UnsignedLong,
+ FX_UnsignedRation,
+ FX_SignedByte,
+ FX_Undefined,
+ FX_SignedShort,
+ FX_SignedLong,
+ FX_SignedRation,
+ FX_SignedFloat,
+ FX_DoubleFloat
};
-FX_BOOL CFX_DIBAttributeExif::ParseExif(CFX_MapPtrTemplate<FX_DWORD, uint8_t*>* pHead, uint8_t* data, FX_DWORD len, CFX_MapPtrTemplate<FX_DWORD, uint8_t*>* pVal)
-{
- if (pHead && data && pVal) {
- if (len > 8) {
- uint8_t* old_data = data;
- data = ParseExifIFH(data, len, &m_readWord, &m_readDword);
- if (data == old_data) {
- return FALSE;
- }
- if (pHead->GetCount() == 0) {
- if (!ParseExifIFD(pHead, data, len)) {
- return FALSE;
- }
- }
- FX_DWORD dwModuleNum;
- FX_WORD type;
- FX_DWORD dwSize;
- FX_DWORD tag;
- uint8_t* head;
- FX_POSITION pos = pHead->GetStartPosition();
- while (pos) {
- pHead->GetNextAssoc(pos, tag, head);
- uint8_t* val = NULL;
- uint8_t* buf = NULL;
- uint8_t* temp = NULL;
- int i;
- if (head) {
- type = m_readWord(head);
- head += 2;
- dwModuleNum = m_readDword(head);
- head += 4;
- switch (type) {
- case FX_UnsignedByte:
- case FX_AscString:
- case FX_SignedByte:
- case FX_Undefined:
- dwSize = dwModuleNum;
- val = FX_Alloc(uint8_t, dwSize);
- if (val == NULL) {
- return FALSE;
- }
- if (dwSize > 4) {
- FXSYS_memcpy(val, old_data + m_readDword(head), dwSize);
- } else {
- FXSYS_memcpy(val, head, dwSize);
- }
- break;
- case FX_UnsignedShort:
- case FX_SignedShort:
- dwSize = dwModuleNum << 1;
- val = FX_Alloc(uint8_t, dwSize);
- if (val == NULL) {
- return FALSE;
- }
- if (dwSize > 4) {
- FXSYS_memcpy(val, old_data + m_readDword(head), dwSize);
- } else {
- FXSYS_memcpy(val, head, dwSize);
- }
- buf = val;
- for(i = 0; i < (int)dwModuleNum; i ++) {
- *(FX_WORD*)buf = m_readWord(buf);
- buf += 2;
- }
- break;
- case FX_UnsignedLong:
- case FX_SignedLong:
- case FX_SignedFloat:
- dwSize = dwModuleNum << 2;
- val = FX_Alloc(uint8_t, dwSize);
- if (val == NULL) {
- return FALSE;
- }
- if (dwSize > 4) {
- FXSYS_memcpy(val, old_data + m_readDword(head), dwSize);
- } else {
- FXSYS_memcpy(val, head, dwSize);
- }
- buf = val;
- for(i = 0; i < (int)dwModuleNum; i ++) {
- *(FX_DWORD*)buf = m_readDword(buf);
- buf += 4;
- }
- break;
- case FX_UnsignedRation:
- case FX_SignedRation: {
- dwSize = dwModuleNum << 3;
- buf = FX_Alloc(uint8_t, dwSize);
- if (buf == NULL) {
- return FALSE;
- }
- if (dwSize > 4) {
- FXSYS_memcpy(buf, old_data + m_readDword(head), dwSize);
- } else {
- FXSYS_memcpy(buf, head, dwSize);
- }
- temp = buf;
- val = FX_Alloc(uint8_t, dwSize / 2);
- if (val == NULL) {
- FX_Free(buf);
- return FALSE;
- }
- for(i = 0; i < (int)dwModuleNum; i ++) {
- *(FX_DWORD*)temp = m_readDword(temp);
- *(FX_DWORD*)(temp + 4) = m_readDword(temp + 4);
- FX_DWORD* lNumerator = (FX_DWORD*)temp;
- FX_DWORD* lNenominator = (FX_DWORD*)(temp + 4);
- *(FX_FLOAT*)(val + i * 4) = (FX_FLOAT)(*lNumerator) / (FX_FLOAT)(*lNenominator);
- temp += 8;
- }
- FX_Free(buf);
- }
- break;
- case FX_DoubleFloat:
- dwSize = dwModuleNum << 3;
- val = FX_Alloc(uint8_t, dwSize);
- if (val == NULL) {
- return FALSE;
- }
- if (dwSize > 4) {
- FXSYS_memcpy(val, old_data + m_readDword(head), dwSize);
- } else {
- FXSYS_memcpy(val, head, dwSize);
- }
- buf = val;
- for(i = 0; i < (int)dwModuleNum; i ++) {
- *(FX_DWORD*)buf = m_readDword(buf);
- *(FX_DWORD*)(buf + 4) = m_readDword(buf + 4);
- buf += 8;
- }
- break;
- default:
- return FALSE;
- }
- }
- pVal->SetAt(tag, val);
- }
- return TRUE;
+FX_BOOL CFX_DIBAttributeExif::ParseExif(
+ CFX_MapPtrTemplate<FX_DWORD, uint8_t*>* pHead,
+ uint8_t* data,
+ FX_DWORD len,
+ CFX_MapPtrTemplate<FX_DWORD, uint8_t*>* pVal) {
+ if (pHead && data && pVal) {
+ if (len > 8) {
+ uint8_t* old_data = data;
+ data = ParseExifIFH(data, len, &m_readWord, &m_readDword);
+ if (data == old_data) {
+ return FALSE;
+ }
+ if (pHead->GetCount() == 0) {
+ if (!ParseExifIFD(pHead, data, len)) {
+ return FALSE;
}
- }
- return FALSE;
-}
-#define FXEXIF_INFOCONVERT(T) {T* src = (T*)ptr; T* dst = (T*)val; *dst = *src;}
-FX_BOOL CFX_DIBAttributeExif::GetInfo( FX_WORD tag, void* val )
-{
- if (m_TagVal.GetCount() == 0) {
- if (!ParseExif(&m_TagHead, m_pExifData, m_dwExifDataLen, &m_TagVal)) {
- return FALSE;
+ }
+ FX_DWORD dwModuleNum;
+ FX_WORD type;
+ FX_DWORD dwSize;
+ FX_DWORD tag;
+ uint8_t* head;
+ FX_POSITION pos = pHead->GetStartPosition();
+ while (pos) {
+ pHead->GetNextAssoc(pos, tag, head);
+ uint8_t* val = NULL;
+ uint8_t* buf = NULL;
+ uint8_t* temp = NULL;
+ int i;
+ if (head) {
+ type = m_readWord(head);
+ head += 2;
+ dwModuleNum = m_readDword(head);
+ head += 4;
+ switch (type) {
+ case FX_UnsignedByte:
+ case FX_AscString:
+ case FX_SignedByte:
+ case FX_Undefined:
+ dwSize = dwModuleNum;
+ val = FX_Alloc(uint8_t, dwSize);
+ if (val == NULL) {
+ return FALSE;
+ }
+ if (dwSize > 4) {
+ FXSYS_memcpy(val, old_data + m_readDword(head), dwSize);
+ } else {
+ FXSYS_memcpy(val, head, dwSize);
+ }
+ break;
+ case FX_UnsignedShort:
+ case FX_SignedShort:
+ dwSize = dwModuleNum << 1;
+ val = FX_Alloc(uint8_t, dwSize);
+ if (val == NULL) {
+ return FALSE;
+ }
+ if (dwSize > 4) {
+ FXSYS_memcpy(val, old_data + m_readDword(head), dwSize);
+ } else {
+ FXSYS_memcpy(val, head, dwSize);
+ }
+ buf = val;
+ for (i = 0; i < (int)dwModuleNum; i++) {
+ *(FX_WORD*)buf = m_readWord(buf);
+ buf += 2;
+ }
+ break;
+ case FX_UnsignedLong:
+ case FX_SignedLong:
+ case FX_SignedFloat:
+ dwSize = dwModuleNum << 2;
+ val = FX_Alloc(uint8_t, dwSize);
+ if (val == NULL) {
+ return FALSE;
+ }
+ if (dwSize > 4) {
+ FXSYS_memcpy(val, old_data + m_readDword(head), dwSize);
+ } else {
+ FXSYS_memcpy(val, head, dwSize);
+ }
+ buf = val;
+ for (i = 0; i < (int)dwModuleNum; i++) {
+ *(FX_DWORD*)buf = m_readDword(buf);
+ buf += 4;
+ }
+ break;
+ case FX_UnsignedRation:
+ case FX_SignedRation: {
+ dwSize = dwModuleNum << 3;
+ buf = FX_Alloc(uint8_t, dwSize);
+ if (buf == NULL) {
+ return FALSE;
+ }
+ if (dwSize > 4) {
+ FXSYS_memcpy(buf, old_data + m_readDword(head), dwSize);
+ } else {
+ FXSYS_memcpy(buf, head, dwSize);
+ }
+ temp = buf;
+ val = FX_Alloc(uint8_t, dwSize / 2);
+ if (val == NULL) {
+ FX_Free(buf);
+ return FALSE;
+ }
+ for (i = 0; i < (int)dwModuleNum; i++) {
+ *(FX_DWORD*)temp = m_readDword(temp);
+ *(FX_DWORD*)(temp + 4) = m_readDword(temp + 4);
+ FX_DWORD* lNumerator = (FX_DWORD*)temp;
+ FX_DWORD* lNenominator = (FX_DWORD*)(temp + 4);
+ *(FX_FLOAT*)(val + i * 4) =
+ (FX_FLOAT)(*lNumerator) / (FX_FLOAT)(*lNenominator);
+ temp += 8;
+ }
+ FX_Free(buf);
+ } break;
+ case FX_DoubleFloat:
+ dwSize = dwModuleNum << 3;
+ val = FX_Alloc(uint8_t, dwSize);
+ if (val == NULL) {
+ return FALSE;
+ }
+ if (dwSize > 4) {
+ FXSYS_memcpy(val, old_data + m_readDword(head), dwSize);
+ } else {
+ FXSYS_memcpy(val, head, dwSize);
+ }
+ buf = val;
+ for (i = 0; i < (int)dwModuleNum; i++) {
+ *(FX_DWORD*)buf = m_readDword(buf);
+ *(FX_DWORD*)(buf + 4) = m_readDword(buf + 4);
+ buf += 8;
+ }
+ break;
+ default:
+ return FALSE;
+ }
}
- }
- uint8_t* ptr = NULL;
- if (m_TagVal.Lookup(tag, ptr)) {
- switch (tag) {
- case EXIFTAG_USHORT_RESUNIT:
- FXEXIF_INFOCONVERT(FX_WORD);
- {
- FX_WORD* ptr = (FX_WORD*)val;
- *ptr -= 1;
- }
- break;
- case EXIFTAG_FLOAT_DPIX:
- case EXIFTAG_FLOAT_DPIY:
- FXEXIF_INFOCONVERT(FX_FLOAT);
- break;
- case EXIFTAG_USHORT_ORIENTATION:
- FXEXIF_INFOCONVERT(FX_WORD);
- break;
- default: {
- uint8_t** dst = (uint8_t**)val;
- *dst = ptr;
- }
+ pVal->SetAt(tag, val);
+ }
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+#define FXEXIF_INFOCONVERT(T) \
+ { \
+ T* src = (T*)ptr; \
+ T* dst = (T*)val; \
+ *dst = *src; \
+ }
+FX_BOOL CFX_DIBAttributeExif::GetInfo(FX_WORD tag, void* val) {
+ if (m_TagVal.GetCount() == 0) {
+ if (!ParseExif(&m_TagHead, m_pExifData, m_dwExifDataLen, &m_TagVal)) {
+ return FALSE;
+ }
+ }
+ uint8_t* ptr = NULL;
+ if (m_TagVal.Lookup(tag, ptr)) {
+ switch (tag) {
+ case EXIFTAG_USHORT_RESUNIT:
+ FXEXIF_INFOCONVERT(FX_WORD);
+ {
+ FX_WORD* ptr = (FX_WORD*)val;
+ *ptr -= 1;
}
- }
- return TRUE;
-}
-class CCodec_RLScanlineDecoder : public CCodec_ScanlineDecoder
-{
-public:
- CCodec_RLScanlineDecoder();
- virtual ~CCodec_RLScanlineDecoder();
- FX_BOOL Create(const uint8_t* src_buf, FX_DWORD src_size, int width, int height, int nComps, int bpc);
- virtual void v_DownScale(int dest_width, int dest_height) {}
- virtual FX_BOOL v_Rewind();
- virtual uint8_t* v_GetNextLine();
- virtual FX_DWORD GetSrcOffset()
- {
- return m_SrcOffset;
- }
-protected:
- FX_BOOL CheckDestSize();
- void GetNextOperator();
- void UpdateOperator(uint8_t used_bytes);
+ break;
+ case EXIFTAG_FLOAT_DPIX:
+ case EXIFTAG_FLOAT_DPIY:
+ FXEXIF_INFOCONVERT(FX_FLOAT);
+ break;
+ case EXIFTAG_USHORT_ORIENTATION:
+ FXEXIF_INFOCONVERT(FX_WORD);
+ break;
+ default: {
+ uint8_t** dst = (uint8_t**)val;
+ *dst = ptr;
+ }
+ }
+ }
+ return TRUE;
+}
+class CCodec_RLScanlineDecoder : public CCodec_ScanlineDecoder {
+ public:
+ CCodec_RLScanlineDecoder();
+ virtual ~CCodec_RLScanlineDecoder();
+ FX_BOOL Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc);
+ virtual void v_DownScale(int dest_width, int dest_height) {}
+ virtual FX_BOOL v_Rewind();
+ virtual uint8_t* v_GetNextLine();
+ virtual FX_DWORD GetSrcOffset() { return m_SrcOffset; }
+
+ protected:
+ FX_BOOL CheckDestSize();
+ void GetNextOperator();
+ void UpdateOperator(uint8_t used_bytes);
- uint8_t* m_pScanline;
- const uint8_t* m_pSrcBuf;
- FX_DWORD m_SrcSize;
- FX_DWORD m_dwLineBytes;
- FX_DWORD m_SrcOffset;
- FX_BOOL m_bEOD;
- uint8_t m_Operator;
+ uint8_t* m_pScanline;
+ const uint8_t* m_pSrcBuf;
+ FX_DWORD m_SrcSize;
+ FX_DWORD m_dwLineBytes;
+ FX_DWORD m_SrcOffset;
+ FX_BOOL m_bEOD;
+ uint8_t m_Operator;
};
CCodec_RLScanlineDecoder::CCodec_RLScanlineDecoder()
- : m_pScanline(NULL)
- , m_pSrcBuf(NULL)
- , m_SrcSize(0)
- , m_dwLineBytes(0)
- , m_SrcOffset(0)
- , m_bEOD(FALSE)
- , m_Operator(0)
-{
-}
-CCodec_RLScanlineDecoder::~CCodec_RLScanlineDecoder()
-{
- if (m_pScanline) {
- FX_Free(m_pScanline);
- }
-}
-FX_BOOL CCodec_RLScanlineDecoder::CheckDestSize()
-{
- FX_DWORD i = 0;
- FX_DWORD old_size = 0;
- FX_DWORD dest_size = 0;
- while (i < m_SrcSize) {
- if (m_pSrcBuf[i] < 128) {
- old_size = dest_size;
- dest_size += m_pSrcBuf[i] + 1;
- if (dest_size < old_size) {
- return FALSE;
- }
- i += m_pSrcBuf[i] + 2;
- } else if (m_pSrcBuf[i] > 128) {
- old_size = dest_size;
- dest_size += 257 - m_pSrcBuf[i];
- if (dest_size < old_size) {
- return FALSE;
- }
- i += 2;
- } else {
- break;
- }
- }
- if (((FX_DWORD)m_OrigWidth * m_nComps * m_bpc * m_OrigHeight + 7) / 8 > dest_size) {
+ : m_pScanline(NULL),
+ m_pSrcBuf(NULL),
+ m_SrcSize(0),
+ m_dwLineBytes(0),
+ m_SrcOffset(0),
+ m_bEOD(FALSE),
+ m_Operator(0) {}
+CCodec_RLScanlineDecoder::~CCodec_RLScanlineDecoder() {
+ if (m_pScanline) {
+ FX_Free(m_pScanline);
+ }
+}
+FX_BOOL CCodec_RLScanlineDecoder::CheckDestSize() {
+ FX_DWORD i = 0;
+ FX_DWORD old_size = 0;
+ FX_DWORD dest_size = 0;
+ while (i < m_SrcSize) {
+ if (m_pSrcBuf[i] < 128) {
+ old_size = dest_size;
+ dest_size += m_pSrcBuf[i] + 1;
+ if (dest_size < old_size) {
return FALSE;
- }
- return TRUE;
-}
-FX_BOOL CCodec_RLScanlineDecoder::Create(const uint8_t* src_buf, FX_DWORD src_size, int width, int height, int nComps, int bpc)
-{
- m_pSrcBuf = src_buf;
- m_SrcSize = src_size;
- m_OutputWidth = m_OrigWidth = width;
- m_OutputHeight = m_OrigHeight = height;
- m_nComps = nComps;
- m_bpc = bpc;
- m_bColorTransformed = FALSE;
- m_DownScale = 1;
- m_Pitch = (width * nComps * bpc + 31) / 32 * 4;
- m_dwLineBytes = (width * nComps * bpc + 7) / 8;
- m_pScanline = FX_Alloc(uint8_t, m_Pitch);
- return CheckDestSize();
-}
-FX_BOOL CCodec_RLScanlineDecoder::v_Rewind()
-{
- FXSYS_memset(m_pScanline, 0, m_Pitch);
- m_SrcOffset = 0;
- m_bEOD = FALSE;
- m_Operator = 0;
- return TRUE;
-}
-uint8_t* CCodec_RLScanlineDecoder::v_GetNextLine()
-{
- if (m_SrcOffset == 0) {
- GetNextOperator();
+ }
+ i += m_pSrcBuf[i] + 2;
+ } else if (m_pSrcBuf[i] > 128) {
+ old_size = dest_size;
+ dest_size += 257 - m_pSrcBuf[i];
+ if (dest_size < old_size) {
+ return FALSE;
+ }
+ i += 2;
} else {
- if (m_bEOD) {
- return NULL;
- }
- }
- FXSYS_memset(m_pScanline, 0, m_Pitch);
- FX_DWORD col_pos = 0;
- FX_BOOL eol = FALSE;
- while (m_SrcOffset < m_SrcSize && !eol) {
- if (m_Operator < 128) {
- FX_DWORD copy_len = m_Operator + 1;
- if (col_pos + copy_len >= m_dwLineBytes) {
- copy_len = m_dwLineBytes - col_pos;
- eol = TRUE;
- }
- if (copy_len >= m_SrcSize - m_SrcOffset) {
- copy_len = m_SrcSize - m_SrcOffset;
- m_bEOD = TRUE;
- }
- FXSYS_memcpy(m_pScanline + col_pos, m_pSrcBuf + m_SrcOffset, copy_len);
- col_pos += copy_len;
- UpdateOperator((uint8_t)copy_len);
- } else if (m_Operator > 128) {
- int fill = 0;
- if (m_SrcOffset - 1 < m_SrcSize - 1) {
- fill = m_pSrcBuf[m_SrcOffset];
- }
- FX_DWORD duplicate_len = 257 - m_Operator;
- if (col_pos + duplicate_len >= m_dwLineBytes) {
- duplicate_len = m_dwLineBytes - col_pos;
- eol = TRUE;
- }
- FXSYS_memset(m_pScanline + col_pos, fill, duplicate_len);
- col_pos += duplicate_len;
- UpdateOperator((uint8_t)duplicate_len);
- } else {
- m_bEOD = TRUE;
- break;
- }
- }
- return m_pScanline;
-}
-void CCodec_RLScanlineDecoder::GetNextOperator()
-{
- if (m_SrcOffset >= m_SrcSize) {
- m_Operator = 128;
- return;
- }
- m_Operator = m_pSrcBuf[m_SrcOffset];
- m_SrcOffset ++;
-}
-void CCodec_RLScanlineDecoder::UpdateOperator(uint8_t used_bytes)
-{
- if (used_bytes == 0) {
- return;
+ break;
}
+ }
+ if (((FX_DWORD)m_OrigWidth * m_nComps * m_bpc * m_OrigHeight + 7) / 8 >
+ dest_size) {
+ return FALSE;
+ }
+ return TRUE;
+}
+FX_BOOL CCodec_RLScanlineDecoder::Create(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc) {
+ m_pSrcBuf = src_buf;
+ m_SrcSize = src_size;
+ m_OutputWidth = m_OrigWidth = width;
+ m_OutputHeight = m_OrigHeight = height;
+ m_nComps = nComps;
+ m_bpc = bpc;
+ m_bColorTransformed = FALSE;
+ m_DownScale = 1;
+ m_Pitch = (width * nComps * bpc + 31) / 32 * 4;
+ m_dwLineBytes = (width * nComps * bpc + 7) / 8;
+ m_pScanline = FX_Alloc(uint8_t, m_Pitch);
+ return CheckDestSize();
+}
+FX_BOOL CCodec_RLScanlineDecoder::v_Rewind() {
+ FXSYS_memset(m_pScanline, 0, m_Pitch);
+ m_SrcOffset = 0;
+ m_bEOD = FALSE;
+ m_Operator = 0;
+ return TRUE;
+}
+uint8_t* CCodec_RLScanlineDecoder::v_GetNextLine() {
+ if (m_SrcOffset == 0) {
+ GetNextOperator();
+ } else {
+ if (m_bEOD) {
+ return NULL;
+ }
+ }
+ FXSYS_memset(m_pScanline, 0, m_Pitch);
+ FX_DWORD col_pos = 0;
+ FX_BOOL eol = FALSE;
+ while (m_SrcOffset < m_SrcSize && !eol) {
if (m_Operator < 128) {
- FXSYS_assert((FX_DWORD)m_Operator + 1 >= used_bytes);
- if (used_bytes == m_Operator + 1) {
- m_SrcOffset += used_bytes;
- GetNextOperator();
- return;
- }
- m_Operator -= used_bytes;
- m_SrcOffset += used_bytes;
- if (m_SrcOffset >= m_SrcSize) {
- m_Operator = 128;
- }
- return;
- }
- uint8_t count = 257 - m_Operator;
- FXSYS_assert((FX_DWORD)count >= used_bytes);
- if (used_bytes == count) {
- m_SrcOffset ++;
- GetNextOperator();
- return;
- }
- count -= used_bytes;
- m_Operator = 257 - count;
-}
-ICodec_ScanlineDecoder* CCodec_BasicModule::CreateRunLengthDecoder(const uint8_t* src_buf, FX_DWORD src_size, int width, int height,
- int nComps, int bpc)
-{
- CCodec_RLScanlineDecoder* pRLScanlineDecoder = new CCodec_RLScanlineDecoder;
- if (!pRLScanlineDecoder->Create(src_buf, src_size, width, height, nComps, bpc)) {
- delete pRLScanlineDecoder;
- return NULL;
- }
- return pRLScanlineDecoder;
+ FX_DWORD copy_len = m_Operator + 1;
+ if (col_pos + copy_len >= m_dwLineBytes) {
+ copy_len = m_dwLineBytes - col_pos;
+ eol = TRUE;
+ }
+ if (copy_len >= m_SrcSize - m_SrcOffset) {
+ copy_len = m_SrcSize - m_SrcOffset;
+ m_bEOD = TRUE;
+ }
+ FXSYS_memcpy(m_pScanline + col_pos, m_pSrcBuf + m_SrcOffset, copy_len);
+ col_pos += copy_len;
+ UpdateOperator((uint8_t)copy_len);
+ } else if (m_Operator > 128) {
+ int fill = 0;
+ if (m_SrcOffset - 1 < m_SrcSize - 1) {
+ fill = m_pSrcBuf[m_SrcOffset];
+ }
+ FX_DWORD duplicate_len = 257 - m_Operator;
+ if (col_pos + duplicate_len >= m_dwLineBytes) {
+ duplicate_len = m_dwLineBytes - col_pos;
+ eol = TRUE;
+ }
+ FXSYS_memset(m_pScanline + col_pos, fill, duplicate_len);
+ col_pos += duplicate_len;
+ UpdateOperator((uint8_t)duplicate_len);
+ } else {
+ m_bEOD = TRUE;
+ break;
+ }
+ }
+ return m_pScanline;
+}
+void CCodec_RLScanlineDecoder::GetNextOperator() {
+ if (m_SrcOffset >= m_SrcSize) {
+ m_Operator = 128;
+ return;
+ }
+ m_Operator = m_pSrcBuf[m_SrcOffset];
+ m_SrcOffset++;
+}
+void CCodec_RLScanlineDecoder::UpdateOperator(uint8_t used_bytes) {
+ if (used_bytes == 0) {
+ return;
+ }
+ if (m_Operator < 128) {
+ FXSYS_assert((FX_DWORD)m_Operator + 1 >= used_bytes);
+ if (used_bytes == m_Operator + 1) {
+ m_SrcOffset += used_bytes;
+ GetNextOperator();
+ return;
+ }
+ m_Operator -= used_bytes;
+ m_SrcOffset += used_bytes;
+ if (m_SrcOffset >= m_SrcSize) {
+ m_Operator = 128;
+ }
+ return;
+ }
+ uint8_t count = 257 - m_Operator;
+ FXSYS_assert((FX_DWORD)count >= used_bytes);
+ if (used_bytes == count) {
+ m_SrcOffset++;
+ GetNextOperator();
+ return;
+ }
+ count -= used_bytes;
+ m_Operator = 257 - count;
+}
+ICodec_ScanlineDecoder* CCodec_BasicModule::CreateRunLengthDecoder(
+ const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int width,
+ int height,
+ int nComps,
+ int bpc) {
+ CCodec_RLScanlineDecoder* pRLScanlineDecoder = new CCodec_RLScanlineDecoder;
+ if (!pRLScanlineDecoder->Create(src_buf, src_size, width, height, nComps,
+ bpc)) {
+ delete pRLScanlineDecoder;
+ return NULL;
+ }
+ return pRLScanlineDecoder;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 14:20:38 +0000