summaryrefslogtreecommitdiff
path: root/core/fxge
diff options
context:
space:
mode:
Diffstat (limited to 'core/fxge')
-rw-r--r--core/fxge/dib/cstretchengine.cpp121
-rw-r--r--core/fxge/dib/cstretchengine.h48
2 files changed, 89 insertions, 80 deletions
diff --git a/core/fxge/dib/cstretchengine.cpp b/core/fxge/dib/cstretchengine.cpp
index 2915202daf..b7aa672a46 100644
--- a/core/fxge/dib/cstretchengine.cpp
+++ b/core/fxge/dib/cstretchengine.cpp
@@ -19,6 +19,10 @@ namespace {
const int kMaxDestValue = 16711680;
+int GetPitchRoundUpTo4Bytes(int bits_per_pixel) {
+ return (bits_per_pixel + 31) / 32 * 4;
+}
+
} // namespace
CStretchEngine::CWeightTable::CWeightTable()
@@ -223,17 +227,19 @@ CStretchEngine::CStretchEngine(ScanlineComposerIface* pDestBitmap,
int dest_height,
const FX_RECT& clip_rect,
const RetainPtr<CFX_DIBSource>& pSrcBitmap,
- int flags) {
- m_State = 0;
- m_DestFormat = dest_format;
- m_DestBpp = dest_format & 0xff;
- m_SrcBpp = pSrcBitmap->GetFormat() & 0xff;
- m_bHasAlpha = pSrcBitmap->GetFormat() & 0x200;
- m_pSrcPalette = pSrcBitmap->GetPalette();
- m_pDestBitmap = pDestBitmap;
- m_DestWidth = dest_width;
- m_DestHeight = dest_height;
- m_DestClip = clip_rect;
+ int flags)
+ : m_DestFormat(dest_format),
+ m_DestBpp(dest_format & 0xff),
+ m_SrcBpp(pSrcBitmap->GetFormat() & 0xff),
+ m_bHasAlpha(pSrcBitmap->GetFormat() & 0x200),
+ m_pSource(pSrcBitmap),
+ m_pSrcPalette(pSrcBitmap->GetPalette()),
+ m_SrcWidth(pSrcBitmap->GetWidth()),
+ m_SrcHeight(pSrcBitmap->GetHeight()),
+ m_pDestBitmap(pDestBitmap),
+ m_DestWidth(dest_width),
+ m_DestHeight(dest_height),
+ m_DestClip(clip_rect) {
uint32_t size = clip_rect.Width();
if (size && m_DestBpp > static_cast<int>(INT_MAX / size))
return;
@@ -242,17 +248,12 @@ CStretchEngine::CStretchEngine(ScanlineComposerIface* pDestBitmap,
if (size > INT_MAX - 31)
return;
- size += 31;
- size = size / 32 * 4;
+ size = GetPitchRoundUpTo4Bytes(size);
m_DestScanline.resize(size);
if (dest_format == FXDIB_Rgb32)
std::fill(m_DestScanline.begin(), m_DestScanline.end(), 255);
- m_InterPitch = (m_DestClip.Width() * m_DestBpp + 31) / 32 * 4;
- m_ExtraMaskPitch = (m_DestClip.Width() * 8 + 31) / 32 * 4;
- m_pSource = pSrcBitmap;
- m_SrcWidth = pSrcBitmap->GetWidth();
- m_SrcHeight = pSrcBitmap->GetHeight();
- m_SrcPitch = (m_SrcWidth * m_SrcBpp + 31) / 32 * 4;
+ m_InterPitch = GetPitchRoundUpTo4Bytes(m_DestClip.Width() * m_DestBpp);
+ m_ExtraMaskPitch = GetPitchRoundUpTo4Bytes(m_DestClip.Width() * 8);
if ((flags & FXDIB_NOSMOOTH) == 0) {
bool bInterpol = flags & FXDIB_INTERPOL || flags & FXDIB_BICUBIC_INTERPOL;
if (!bInterpol && abs(dest_width) != 0 &&
@@ -284,39 +285,36 @@ CStretchEngine::CStretchEngine(ScanlineComposerIface* pDestBitmap,
m_SrcClip.bottom = static_cast<int>(ceil(src_bottom));
FX_RECT src_rect(0, 0, m_SrcWidth, m_SrcHeight);
m_SrcClip.Intersect(src_rect);
- if (m_SrcBpp == 1) {
- if (m_DestBpp == 8)
- m_TransMethod = 1;
- else
- m_TransMethod = 2;
- } else if (m_SrcBpp == 8) {
- if (m_DestBpp == 8) {
- if (!m_bHasAlpha)
- m_TransMethod = 3;
- else
- m_TransMethod = 4;
- } else {
- if (!m_bHasAlpha)
- m_TransMethod = 5;
- else
- m_TransMethod = 6;
- }
- } else {
- if (!m_bHasAlpha)
- m_TransMethod = 7;
- else
- m_TransMethod = 8;
+
+ switch (m_SrcBpp) {
+ case 1:
+ m_TransMethod = m_DestBpp == 8 ? TransformMethod::k1BppTo8Bpp
+ : TransformMethod::k1BppToManyBpp;
+ break;
+ case 8:
+ if (m_DestBpp == 8) {
+ m_TransMethod = m_bHasAlpha ? TransformMethod::k8BppTo8BppWithAlpha
+ : TransformMethod::k8BppTo8Bpp;
+ } else {
+ m_TransMethod = m_bHasAlpha ? TransformMethod::k8BppToManyBppWithAlpha
+ : TransformMethod::k8BppToManyBpp;
+ }
+ break;
+ default:
+ m_TransMethod = m_bHasAlpha ? TransformMethod::kManyBpptoManyBppWithAlpha
+ : TransformMethod::kManyBpptoManyBpp;
+ break;
}
}
CStretchEngine::~CStretchEngine() {}
bool CStretchEngine::Continue(PauseIndicatorIface* pPause) {
- while (m_State == 1) {
+ while (m_State == State::kHorizontal) {
if (ContinueStretchHorz(pPause))
return true;
- m_State = 2;
+ m_State = State::kVertical;
StretchVert();
}
return false;
@@ -334,8 +332,7 @@ bool CStretchEngine::StartStretchHorz() {
m_InterBuf.resize(m_SrcClip.Height() * m_InterPitch);
if (m_pSource && m_bHasAlpha && m_pSource->m_pAlphaMask) {
m_ExtraAlphaBuf.resize(m_SrcClip.Height(), m_ExtraMaskPitch);
- uint32_t size = (m_DestClip.Width() * 8 + 31) / 32 * 4;
- m_DestMaskScanline.resize(size);
+ m_DestMaskScanline.resize(m_ExtraMaskPitch);
}
bool ret =
m_WeightTable.Calc(m_DestWidth, m_DestClip.left, m_DestClip.right,
@@ -344,7 +341,7 @@ bool CStretchEngine::StartStretchHorz() {
return false;
m_CurRow = m_SrcClip.top;
- m_State = 1;
+ m_State = State::kHorizontal;
return true;
}
@@ -377,8 +374,8 @@ bool CStretchEngine::ContinueStretchHorz(PauseIndicatorIface* pPause) {
}
// TODO(npm): reduce duplicated code here
switch (m_TransMethod) {
- case 1:
- case 2: {
+ case TransformMethod::k1BppTo8Bpp:
+ case TransformMethod::k1BppToManyBpp: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
PixelWeight* pWeights = m_WeightTable.GetPixelWeight(col);
int dest_a = 0;
@@ -397,7 +394,7 @@ bool CStretchEngine::ContinueStretchHorz(PauseIndicatorIface* pPause) {
}
break;
}
- case 3: {
+ case TransformMethod::k8BppTo8Bpp: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
PixelWeight* pWeights = m_WeightTable.GetPixelWeight(col);
int dest_a = 0;
@@ -415,7 +412,7 @@ bool CStretchEngine::ContinueStretchHorz(PauseIndicatorIface* pPause) {
}
break;
}
- case 4: {
+ case TransformMethod::k8BppTo8BppWithAlpha: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
PixelWeight* pWeights = m_WeightTable.GetPixelWeight(col);
int dest_a = 0;
@@ -439,7 +436,7 @@ bool CStretchEngine::ContinueStretchHorz(PauseIndicatorIface* pPause) {
}
break;
}
- case 5: {
+ case TransformMethod::k8BppToManyBpp: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
PixelWeight* pWeights = m_WeightTable.GetPixelWeight(col);
int dest_r_y = 0;
@@ -473,7 +470,7 @@ bool CStretchEngine::ContinueStretchHorz(PauseIndicatorIface* pPause) {
}
break;
}
- case 6: {
+ case TransformMethod::k8BppToManyBppWithAlpha: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
PixelWeight* pWeights = m_WeightTable.GetPixelWeight(col);
int dest_a = 0;
@@ -512,7 +509,7 @@ bool CStretchEngine::ContinueStretchHorz(PauseIndicatorIface* pPause) {
}
break;
}
- case 7: {
+ case TransformMethod::kManyBpptoManyBpp: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
PixelWeight* pWeights = m_WeightTable.GetPixelWeight(col);
int dest_r_y = 0;
@@ -541,7 +538,7 @@ bool CStretchEngine::ContinueStretchHorz(PauseIndicatorIface* pPause) {
}
break;
}
- case 8: {
+ case TransformMethod::kManyBpptoManyBppWithAlpha: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
PixelWeight* pWeights = m_WeightTable.GetPixelWeight(col);
int dest_a = 0;
@@ -604,9 +601,9 @@ void CStretchEngine::StretchVert() {
unsigned char* dest_scan_mask = m_DestMaskScanline.data();
PixelWeight* pWeights = table.GetPixelWeight(row);
switch (m_TransMethod) {
- case 1:
- case 2:
- case 3: {
+ case TransformMethod::k1BppTo8Bpp:
+ case TransformMethod::k1BppToManyBpp:
+ case TransformMethod::k8BppTo8Bpp: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
unsigned char* src_scan =
m_InterBuf.data() + (col - m_DestClip.left) * DestBpp;
@@ -627,7 +624,7 @@ void CStretchEngine::StretchVert() {
}
break;
}
- case 4: {
+ case TransformMethod::k8BppTo8BppWithAlpha: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
unsigned char* src_scan =
m_InterBuf.data() + (col - m_DestClip.left) * DestBpp;
@@ -656,8 +653,8 @@ void CStretchEngine::StretchVert() {
}
break;
}
- case 5:
- case 7: {
+ case TransformMethod::k8BppToManyBpp:
+ case TransformMethod::kManyBpptoManyBpp: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
unsigned char* src_scan =
m_InterBuf.data() + (col - m_DestClip.left) * DestBpp;
@@ -688,8 +685,8 @@ void CStretchEngine::StretchVert() {
}
break;
}
- case 6:
- case 8: {
+ case TransformMethod::k8BppToManyBppWithAlpha:
+ case TransformMethod::kManyBpptoManyBppWithAlpha: {
for (int col = m_DestClip.left; col < m_DestClip.right; ++col) {
unsigned char* src_scan =
m_InterBuf.data() + (col - m_DestClip.left) * DestBpp;
diff --git a/core/fxge/dib/cstretchengine.h b/core/fxge/dib/cstretchengine.h
index 91530cc01f..fa298f5376 100644
--- a/core/fxge/dib/cstretchengine.h
+++ b/core/fxge/dib/cstretchengine.h
@@ -57,31 +57,43 @@ class CStretchEngine {
size_t m_dwWeightTablesSize;
};
- FXDIB_Format m_DestFormat;
- int m_DestBpp;
- int m_SrcBpp;
- int m_bHasAlpha;
- UnownedPtr<ScanlineComposerIface> m_pDestBitmap;
- int m_DestWidth;
- int m_DestHeight;
- FX_RECT m_DestClip;
+ enum class State : uint8_t { kInitial, kHorizontal, kVertical };
+
+ enum class TransformMethod : uint8_t {
+ k1BppTo8Bpp,
+ k1BppToManyBpp,
+ k8BppTo8Bpp,
+ k8BppTo8BppWithAlpha,
+ k8BppToManyBpp,
+ k8BppToManyBppWithAlpha,
+ kManyBpptoManyBpp,
+ kManyBpptoManyBppWithAlpha
+ };
+
+ const FXDIB_Format m_DestFormat;
+ const int m_DestBpp;
+ const int m_SrcBpp;
+ const int m_bHasAlpha;
+ RetainPtr<CFX_DIBSource> const m_pSource;
+ const uint32_t* m_pSrcPalette;
+ const int m_SrcWidth;
+ const int m_SrcHeight;
+ UnownedPtr<ScanlineComposerIface> const m_pDestBitmap;
+ const int m_DestWidth;
+ const int m_DestHeight;
+ const FX_RECT m_DestClip;
std::vector<uint8_t> m_DestScanline;
std::vector<uint8_t> m_DestMaskScanline;
+ std::vector<uint8_t> m_InterBuf;
+ std::vector<uint8_t> m_ExtraAlphaBuf;
FX_RECT m_SrcClip;
- RetainPtr<CFX_DIBSource> m_pSource;
- uint32_t* m_pSrcPalette;
- int m_SrcWidth;
- int m_SrcHeight;
- int m_SrcPitch;
int m_InterPitch;
int m_ExtraMaskPitch;
- std::vector<uint8_t> m_InterBuf;
- std::vector<uint8_t> m_ExtraAlphaBuf;
- int m_TransMethod;
int m_Flags;
- CWeightTable m_WeightTable;
+ TransformMethod m_TransMethod;
+ State m_State = State::kInitial;
int m_CurRow;
- int m_State;
+ CWeightTable m_WeightTable;
};
#endif // CORE_FXGE_DIB_CSTRETCHENGINE_H_
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-20 04:10:18 +0000