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-rw-r--r--core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp138
-rw-r--r--core/src/fpdfapi/fpdf_render/render_int.h4
2 files changed, 67 insertions, 75 deletions
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
index 5f0abde2be..f3a1996ab4 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
@@ -253,20 +253,19 @@ FX_BOOL CPDF_DIBSource::Load(CPDF_Document* pDoc, const CPDF_Stream* pStream, CP
}
int CPDF_DIBSource::ContinueToLoadMask()
{
- FX_DWORD bpc = GetValidBpc();
if (m_bImageMask) {
m_bpp = 1;
- bpc = 1;
+ m_bpc = 1;
m_nComponents = 1;
m_AlphaFlag = 1;
- } else if (bpc * m_nComponents == 1) {
+ } else if (m_bpc * m_nComponents == 1) {
m_bpp = 1;
- } else if (bpc * m_nComponents <= 8) {
+ } else if (m_bpc * m_nComponents <= 8) {
m_bpp = 8;
} else {
m_bpp = 24;
}
- if (!bpc || !m_nComponents) {
+ if (!m_bpc || !m_nComponents) {
return 0;
}
FX_SAFE_DWORD pitch = m_Width;
@@ -451,6 +450,8 @@ int CPDF_DIBSource::ContinueLoadDIBSource(IFX_Pause* pPause)
}
FX_BOOL CPDF_DIBSource::LoadColorInfo(CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources)
{
+ m_bpc_orig = m_pDict->GetInteger(FX_BSTRC("BitsPerComponent"));
+ ValidateBpc();
if (m_pDict->GetInteger("ImageMask")) {
m_bImageMask = TRUE;
}
@@ -492,7 +493,6 @@ FX_BOOL CPDF_DIBSource::LoadColorInfo(CPDF_Dictionary* pFormResources, CPDF_Dict
if (m_pColorSpace == NULL) {
return FALSE;
}
- m_bpc = m_pDict->GetInteger(FX_BSTRC("BitsPerComponent"));
m_Family = m_pColorSpace->GetFamily();
m_nComponents = m_pColorSpace->CountComponents();
if (m_Family == PDFCS_ICCBASED && pCSObj->GetType() == PDFOBJ_NAME) {
@@ -565,8 +565,7 @@ int CPDF_DIBSource::CreateDecoder()
if (decoder.IsEmpty()) {
return 1;
}
- FX_DWORD bpc = GetValidBpc();
- if (bpc == 0) {
+ if (m_bpc == 0) {
return 0;
}
FX_LPCBYTE src_data = m_pStreamAcc->GetData();
@@ -579,17 +578,17 @@ int CPDF_DIBSource::CreateDecoder()
m_nComponents, pParams ? pParams->GetInteger(FX_BSTR("ColorTransform"), 1) : 1);
if (NULL == m_pDecoder) {
FX_BOOL bTransform = FALSE;
- int comps, tmp_bpc;
+ int comps, bpc;
ICodec_JpegModule* pJpegModule = CPDF_ModuleMgr::Get()->GetJpegModule();
- if (pJpegModule->LoadInfo(src_data, src_size, m_Width, m_Height, comps, tmp_bpc, bTransform)) {
+ if (pJpegModule->LoadInfo(src_data, src_size, m_Width, m_Height, comps, bpc, bTransform)) {
m_nComponents = comps;
- m_bpc = bpc = tmp_bpc;
+ m_bpc = bpc;
m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(src_data, src_size, m_Width, m_Height,
m_nComponents, bTransform);
}
}
} else if (decoder == FX_BSTRC("FlateDecode")) {
- m_pDecoder = FPDFAPI_CreateFlateDecoder(src_data, src_size, m_Width, m_Height, m_nComponents, bpc, pParams);
+ m_pDecoder = FPDFAPI_CreateFlateDecoder(src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc, pParams);
} else if (decoder == FX_BSTRC("JPXDecode")) {
LoadJpxBitmap();
return m_pCachedBitmap != NULL ? 1 : 0;
@@ -603,10 +602,10 @@ int CPDF_DIBSource::CreateDecoder()
m_Status = 1;
return 2;
} else if (decoder == FX_BSTRC("RunLengthDecode")) {
- m_pDecoder = CPDF_ModuleMgr::Get()->GetCodecModule()->GetBasicModule()->CreateRunLengthDecoder(src_data, src_size, m_Width, m_Height, m_nComponents, bpc);
+ m_pDecoder = CPDF_ModuleMgr::Get()->GetCodecModule()->GetBasicModule()->CreateRunLengthDecoder(src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc);
}
if (m_pDecoder) {
- FX_SAFE_DWORD requested_pitch = bpc;
+ FX_SAFE_DWORD requested_pitch = m_bpc;
requested_pitch *= m_nComponents;
requested_pitch *= m_Width;
requested_pitch += 7;
@@ -855,17 +854,16 @@ int CPDF_DIBSource::StartLoadMaskDIB()
}
void CPDF_DIBSource::LoadPalette()
{
- FX_DWORD bpc = GetValidBpc();
- if (bpc == 0) {
+ if (m_bpc == 0) {
return;
}
- if (bpc * m_nComponents > 8) {
+ if (m_bpc * m_nComponents > 8) {
return;
}
if (m_pColorSpace == NULL) {
return;
}
- if (bpc * m_nComponents == 1) {
+ if (m_bpc * m_nComponents == 1) {
if (m_bDefaultDecode && (m_Family == PDFCS_DEVICEGRAY || m_Family == PDFCS_DEVICERGB)) {
return;
}
@@ -889,16 +887,16 @@ void CPDF_DIBSource::LoadPalette()
}
return;
}
- if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY) && bpc == 8 && m_bDefaultDecode) {
+ if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY) && m_bpc == 8 && m_bDefaultDecode) {
} else {
- int palette_count = 1 << (bpc * m_nComponents);
+ int palette_count = 1 << (m_bpc * m_nComponents);
CFX_FixedBufGrow<FX_FLOAT, 16> color_values(m_nComponents);
FX_FLOAT* color_value = color_values;
for (int i = 0; i < palette_count; i ++) {
int color_data = i;
for (FX_DWORD j = 0; j < m_nComponents; j ++) {
- int encoded_component = color_data % (1 << bpc);
- color_data /= 1 << bpc;
+ int encoded_component = color_data % (1 << m_bpc);
+ color_data /= 1 << m_bpc;
color_value[j] = m_pCompData[j].m_DecodeMin + m_pCompData[j].m_DecodeStep * encoded_component;
}
FX_FLOAT R = 0, G = 0, B = 0;
@@ -917,49 +915,46 @@ void CPDF_DIBSource::LoadPalette()
}
}
}
-FX_DWORD CPDF_DIBSource::GetValidBpc() const
+void CPDF_DIBSource::ValidateBpc()
{
- FX_DWORD bpc = m_bpc;
+ m_bpc = m_bpc_orig;
CPDF_Object * pFilter = m_pDict ? m_pDict->GetElementValue(FX_BSTRC("Filter")) : NULL;
if (pFilter) {
if (pFilter->GetType() == PDFOBJ_NAME) {
CFX_ByteString filter = pFilter->GetString();
if (filter == FX_BSTRC("CCITTFaxDecode") || filter == FX_BSTRC("JBIG2Decode")) {
- bpc = 1;
+ m_bpc = 1;
}
if (filter == FX_BSTRC("RunLengthDecode") || filter == FX_BSTRC("DCTDecode")) {
- bpc = 8;
+ m_bpc = 8;
}
} else if (pFilter->GetType() == PDFOBJ_ARRAY) {
CPDF_Array *pArray = (CPDF_Array *)pFilter;
if (pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("CCITTFacDecode") ||
pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("JBIG2Decode")) {
- bpc = 1;
+ m_bpc = 1;
}
if (pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("RunLengthDecode") ||
pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("DCTDecode")) {
- bpc = 8;
+ m_bpc = 8;
}
}
}
- if (bpc != 1 && bpc != 2 && bpc != 4 && bpc != 8 && bpc != 16) {
- bpc = 0;
+ if (m_bpc != 1 && m_bpc != 2 && m_bpc != 4 && m_bpc != 8 && m_bpc != 16) {
+ m_bpc = 0;
}
-
- return bpc;
}
#define NORMALCOLOR_MAX(color, max) (color) > (max) ? (max) : (color) < 0 ? 0 : (color);
void CPDF_DIBSource::TranslateScanline24bpp(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan) const
{
- FX_DWORD bpc = GetValidBpc();
- if (bpc == 0) {
+ if (m_bpc == 0) {
return;
}
- int max_data = (1 << bpc) - 1;
+ int max_data = (1 << m_bpc) - 1;
if (m_bDefaultDecode) {
if (m_Family == PDFCS_DEVICERGB || m_Family == PDFCS_CALRGB) {
FX_LPCBYTE src_pos = src_scan;
- switch (bpc) {
+ switch (m_bpc) {
case 16:
for (int col = 0; col < m_Width; col ++) {
*dest_scan++ = src_pos[4];
@@ -980,12 +975,12 @@ void CPDF_DIBSource::TranslateScanline24bpp(FX_LPBYTE dest_scan, FX_LPCBYTE src_
int src_bit_pos = 0;
int dest_byte_pos = 0;
for (int column = 0; column < m_Width; column ++) {
- int R = _GetBits8(src_scan, src_bit_pos, bpc);
- src_bit_pos += bpc;
- int G = _GetBits8(src_scan, src_bit_pos, bpc);
- src_bit_pos += bpc;
- int B = _GetBits8(src_scan, src_bit_pos, bpc);
- src_bit_pos += bpc;
+ int R = _GetBits8(src_scan, src_bit_pos, m_bpc);
+ src_bit_pos += m_bpc;
+ int G = _GetBits8(src_scan, src_bit_pos, m_bpc);
+ src_bit_pos += m_bpc;
+ int B = _GetBits8(src_scan, src_bit_pos, m_bpc);
+ src_bit_pos += m_bpc;
R = NORMALCOLOR_MAX(R, max_data);
G = NORMALCOLOR_MAX(G, max_data);
B = NORMALCOLOR_MAX(B, max_data);
@@ -997,7 +992,7 @@ void CPDF_DIBSource::TranslateScanline24bpp(FX_LPBYTE dest_scan, FX_LPCBYTE src_
break;
}
return;
- } else if (bpc == 8) {
+ } else if (m_bpc == 8) {
if (m_nComponents == m_pColorSpace->CountComponents())
m_pColorSpace->TranslateImageLine(dest_scan, src_scan, m_Width, m_Width, m_Height,
m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK);
@@ -1007,7 +1002,7 @@ void CPDF_DIBSource::TranslateScanline24bpp(FX_LPBYTE dest_scan, FX_LPCBYTE src_
CFX_FixedBufGrow<FX_FLOAT, 16> color_values1(m_nComponents);
FX_FLOAT* color_values = color_values1;
FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
- if (bpc == 8) {
+ if (m_bpc == 8) {
int src_byte_pos = 0;
int dest_byte_pos = 0;
for (int column = 0; column < m_Width; column ++) {
@@ -1035,13 +1030,12 @@ void CPDF_DIBSource::TranslateScanline24bpp(FX_LPBYTE dest_scan, FX_LPCBYTE src_
} else {
int src_bit_pos = 0;
int dest_byte_pos = 0;
- FX_DWORD bpc = GetValidBpc();
for (int column = 0; column < m_Width; column ++) {
for (FX_DWORD color = 0; color < m_nComponents; color ++) {
- int data = _GetBits8(src_scan, src_bit_pos, bpc);
+ int data = _GetBits8(src_scan, src_bit_pos, m_bpc);
color_values[color] = m_pCompData[color].m_DecodeMin +
m_pCompData[color].m_DecodeStep * data;
- src_bit_pos += bpc;
+ src_bit_pos += m_bpc;
}
if (m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK) {
FX_FLOAT k = 1.0f - color_values[3];
@@ -1070,12 +1064,11 @@ FX_LPBYTE CPDF_DIBSource::GetBuffer() const
}
FX_LPCBYTE CPDF_DIBSource::GetScanline(int line) const
{
- FX_DWORD bpc = GetValidBpc();
- if (bpc == 0) {
+ if (m_bpc == 0) {
return NULL;
}
FX_SAFE_DWORD src_pitch = m_Width;
- src_pitch *= bpc;
+ src_pitch *= m_bpc;
src_pitch *= m_nComponents;
src_pitch += 7;
src_pitch /= 8;
@@ -1100,7 +1093,7 @@ FX_LPCBYTE CPDF_DIBSource::GetScanline(int line) const
FXSYS_memset8(pLineBuf, 0xff, m_Pitch);
return pLineBuf;
}
- if (bpc * m_nComponents == 1) {
+ if (m_bpc * m_nComponents == 1) {
if (m_bImageMask && m_bDefaultDecode) {
for (FX_DWORD i = 0; i < src_pitch_value; i++) {
m_pLineBuf[i] = ~pSrcLine[i];
@@ -1132,17 +1125,17 @@ FX_LPCBYTE CPDF_DIBSource::GetScanline(int line) const
}
return m_pLineBuf;
}
- if (bpc * m_nComponents <= 8) {
- if (bpc == 8) {
+ if (m_bpc * m_nComponents <= 8) {
+ if (m_bpc == 8) {
FXSYS_memcpy32(m_pLineBuf, pSrcLine, src_pitch_value);
} else {
int src_bit_pos = 0;
for (int col = 0; col < m_Width; col ++) {
int color_index = 0;
for (FX_DWORD color = 0; color < m_nComponents; color ++) {
- int data = _GetBits8(pSrcLine, src_bit_pos, bpc);
- color_index |= data << (color * bpc);
- src_bit_pos += bpc;
+ int data = _GetBits8(pSrcLine, src_bit_pos, m_bpc);
+ color_index |= data << (color * m_bpc);
+ src_bit_pos += m_bpc;
}
m_pLineBuf[col] = color_index;
}
@@ -1169,7 +1162,7 @@ FX_LPCBYTE CPDF_DIBSource::GetScanline(int line) const
return m_pLineBuf;
}
if (m_bColorKey) {
- if (m_nComponents == 3 && bpc == 8) {
+ if (m_nComponents == 3 && m_bpc == 8) {
FX_LPBYTE alpha_channel = m_pMaskedLine + 3;
for (int col = 0; col < m_Width; col ++) {
FX_LPCBYTE pPixel = pSrcLine + col * 3;
@@ -1214,10 +1207,9 @@ void CPDF_DIBSource::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_
return;
}
- FX_DWORD bpc = GetValidBpc();
FX_DWORD src_width = m_Width;
FX_SAFE_DWORD pitch = src_width;
- pitch *= bpc;
+ pitch *= m_bpc;
pitch *= m_nComponents;
pitch += 7;
pitch /= 8;
@@ -1241,7 +1233,7 @@ void CPDF_DIBSource::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_
pSrcLine = m_pStreamAcc->GetData() + line * src_pitch;
}
}
- int orig_Bpp = bpc * m_nComponents / 8;
+ int orig_Bpp = m_bpc * m_nComponents / 8;
int dest_Bpp = dest_bpp / 8;
if (pSrcLine == NULL) {
FXSYS_memset32(dest_scan, 0xff, dest_Bpp * clip_width);
@@ -1257,7 +1249,7 @@ void CPDF_DIBSource::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_
}
CFX_FixedBufGrow<FX_BYTE, 128> temp(orig_Bpp);
- if (bpc * m_nComponents == 1) {
+ if (m_bpc * m_nComponents == 1) {
FX_DWORD set_argb = (FX_DWORD) - 1, reset_argb = 0;
if (m_bImageMask) {
if (m_bDefaultDecode) {
@@ -1325,15 +1317,15 @@ void CPDF_DIBSource::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_
}
}
return;
- } else if (bpc * m_nComponents <= 8) {
- if (bpc < 8) {
+ } else if (m_bpc * m_nComponents <= 8) {
+ if (m_bpc < 8) {
int src_bit_pos = 0;
for (FX_DWORD col = 0; col < src_width; col ++) {
int color_index = 0;
for (FX_DWORD color = 0; color < m_nComponents; color ++) {
- int data = _GetBits8(pSrcLine, src_bit_pos, bpc);
- color_index |= data << (color * bpc);
- src_bit_pos += bpc;
+ int data = _GetBits8(pSrcLine, src_bit_pos, m_bpc);
+ color_index |= data << (color * m_bpc);
+ src_bit_pos += m_bpc;
}
m_pLineBuf[col] = color_index;
}
@@ -1382,14 +1374,14 @@ void CPDF_DIBSource::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_
} else {
int last_src_x = -1;
FX_ARGB last_argb;
- FX_FLOAT orig_Not8Bpp = (FX_FLOAT)bpc * (FX_FLOAT)m_nComponents / 8.0f;
- FX_FLOAT unit_To8Bpc = 255.0f / ((1 << bpc) - 1);
+ FX_FLOAT orig_Not8Bpp = (FX_FLOAT)m_bpc * (FX_FLOAT)m_nComponents / 8.0f;
+ FX_FLOAT unit_To8Bpc = 255.0f / ((1 << m_bpc) - 1);
for (int i = 0; i < clip_width; i ++) {
int dest_x = clip_left + i;
FX_DWORD src_x = (bFlipX ? (dest_width - dest_x - 1) : dest_x) * (FX_INT64)src_width / dest_width;
src_x %= src_width;
FX_LPCBYTE pSrcPixel = NULL;
- if (bpc % 8 == 0) {
+ if (m_bpc % 8 == 0) {
pSrcPixel = pSrcLine + src_x * orig_Bpp;
} else {
pSrcPixel = pSrcLine + (int)(src_x * orig_Not8Bpp);
@@ -1408,14 +1400,14 @@ void CPDF_DIBSource::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_
}
m_pColorSpace->TranslateImageLine(color, temp, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK);
} else {
- if (bpc < 8) {
+ if (m_bpc < 8) {
int src_bit_pos = 0;
if (src_x % 2) {
src_bit_pos = 4;
}
for (FX_DWORD i = 0; i < m_nComponents; i ++) {
- temp[i] = (FX_BYTE)(_GetBits8(pSrcPixel, src_bit_pos, bpc) * unit_To8Bpc);
- src_bit_pos += bpc;
+ temp[i] = (FX_BYTE)(_GetBits8(pSrcPixel, src_bit_pos, m_bpc) * unit_To8Bpc);
+ src_bit_pos += m_bpc;
}
m_pColorSpace->TranslateImageLine(color, temp, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK);
} else {
@@ -1428,7 +1420,7 @@ void CPDF_DIBSource::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_
}
if (m_bColorKey) {
int alpha = 0xff;
- if (m_nComponents == 3 && bpc == 8) {
+ if (m_nComponents == 3 && m_bpc == 8) {
alpha = (pSrcPixel[0] < m_pCompData[0].m_ColorKeyMin ||
pSrcPixel[0] > m_pCompData[0].m_ColorKeyMax ||
pSrcPixel[1] < m_pCompData[1].m_ColorKeyMin ||
diff --git a/core/src/fpdfapi/fpdf_render/render_int.h b/core/src/fpdfapi/fpdf_render/render_int.h
index fda3666871..af0e74e5e4 100644
--- a/core/src/fpdfapi/fpdf_render/render_int.h
+++ b/core/src/fpdfapi/fpdf_render/render_int.h
@@ -419,13 +419,13 @@ protected:
void LoadPalette();
FX_BOOL CreateDecoder();
void TranslateScanline24bpp(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan) const;
- FX_DWORD GetValidBpc() const;
+ void ValidateBpc();
CPDF_Document* m_pDocument;
const CPDF_Stream* m_pStream;
CPDF_StreamAcc* m_pStreamAcc;
const CPDF_Dictionary* m_pDict;
CPDF_ColorSpace* m_pColorSpace;
- FX_DWORD m_Family, m_bpc, m_nComponents, m_GroupFamily;
+ FX_DWORD m_Family, m_bpc, m_bpc_orig, m_nComponents, m_GroupFamily;
FX_BOOL m_bLoadMask;
FX_BOOL m_bDefaultDecode, m_bImageMask, m_bColorKey;
DIB_COMP_DATA* m_pCompData;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 17:14:50 +0000