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path: root/core/fxcodec/jbig2/JBig2_Image.cpp
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Diffstat (limited to 'core/fxcodec/jbig2/JBig2_Image.cpp')
-rw-r--r--core/fxcodec/jbig2/JBig2_Image.cpp195
1 files changed, 89 insertions, 106 deletions
diff --git a/core/fxcodec/jbig2/JBig2_Image.cpp b/core/fxcodec/jbig2/JBig2_Image.cpp
index 311c38270e..dddc1d29d0 100644
--- a/core/fxcodec/jbig2/JBig2_Image.cpp
+++ b/core/fxcodec/jbig2/JBig2_Image.cpp
@@ -665,74 +665,46 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
int32_t y,
JBig2ComposeOp op,
const FX_RECT* pSrcRect) {
- int32_t xs0, ys0, xs1, ys1, xd0, yd0, xd1, yd1, xx, yy, w, h, middleDwords,
- lineLeft;
- FX_DWORD s1, d1, d2, shift, shift1, shift2, tmp, tmp1, tmp2, maskL, maskR,
- maskM;
- uint8_t *lineSrc, *lineDst, *sp, *dp;
- int32_t sw, sh;
if (!m_pData) {
return FALSE;
}
+ // TODO(weili): Check whether the range check is correct. Should x>=1048576?
if (x < -1048576 || x > 1048576 || y < -1048576 || y > 1048576) {
return FALSE;
}
- sw = pSrcRect->Width();
- sh = pSrcRect->Height();
- if (y < 0) {
- ys0 = -y;
- } else {
- ys0 = 0;
- }
- if (y + sh > pDst->m_nHeight) {
- ys1 = pDst->m_nHeight - y;
- } else {
- ys1 = sh;
- }
- if (x < 0) {
- xs0 = -x;
- } else {
- xs0 = 0;
- }
- if (x + sw > pDst->m_nWidth) {
- xs1 = pDst->m_nWidth - x;
- } else {
- xs1 = sw;
- }
+ int32_t sw = pSrcRect->Width();
+ int32_t sh = pSrcRect->Height();
+ int32_t ys0 = y < 0 ? -y : 0;
+ int32_t ys1 = y + sh > pDst->m_nHeight ? pDst->m_nHeight - y : sh;
+ int32_t xs0 = x < 0 ? -x : 0;
+ int32_t xs1 = x + sw > pDst->m_nWidth ? pDst->m_nWidth - x : sw;
if ((ys0 >= ys1) || (xs0 >= xs1)) {
return 0;
}
- w = xs1 - xs0;
- h = ys1 - ys0;
- if (y < 0) {
- yd0 = 0;
- } else {
- yd0 = y;
- }
- if (x < 0) {
- xd0 = 0;
- } else {
- xd0 = x;
- }
- xd1 = xd0 + w;
- yd1 = yd0 + h;
- d1 = xd0 & 31;
- d2 = xd1 & 31;
- s1 = xs0 & 31;
- maskL = 0xffffffff >> d1;
- maskR = 0xffffffff << ((32 - (xd1 & 31)) % 32);
- maskM = maskL & maskR;
- lineSrc = m_pData + (pSrcRect->top + ys0) * m_nStride +
- (((xs0 + pSrcRect->left) >> 5) << 2);
- lineLeft = m_nStride - ((xs0 >> 5) << 2);
- lineDst = pDst->m_pData + yd0 * pDst->m_nStride + ((xd0 >> 5) << 2);
+ int32_t w = xs1 - xs0;
+ int32_t h = ys1 - ys0;
+ int32_t yd0 = y < 0 ? 0 : y;
+ int32_t xd0 = x < 0 ? 0 : x;
+ int32_t xd1 = xd0 + w;
+ int32_t yd1 = yd0 + h;
+ int32_t d1 = xd0 & 31;
+ int32_t d2 = xd1 & 31;
+ int32_t s1 = xs0 & 31;
+ int32_t maskL = 0xffffffff >> d1;
+ int32_t maskR = 0xffffffff << ((32 - (xd1 & 31)) % 32);
+ int32_t maskM = maskL & maskR;
+ uint8_t* lineSrc = m_pData + (pSrcRect->top + ys0) * m_nStride +
+ (((xs0 + pSrcRect->left) >> 5) << 2);
+ int32_t lineLeft = m_nStride - ((xs0 >> 5) << 2);
+ uint8_t* lineDst = pDst->m_pData + yd0 * pDst->m_nStride + ((xd0 >> 5) << 2);
if ((xd0 & ~31) == ((xd1 - 1) & ~31)) {
if ((xs0 & ~31) == ((xs1 - 1) & ~31)) {
if (s1 > d1) {
- shift = s1 - d1;
- for (yy = yd0; yy < yd1; yy++) {
- tmp1 = JBIG2_GETDWORD(lineSrc) << shift;
- tmp2 = JBIG2_GETDWORD(lineDst);
+ FX_DWORD shift = s1 - d1;
+ for (int32_t yy = yd0; yy < yd1; yy++) {
+ FX_DWORD tmp1 = JBIG2_GETDWORD(lineSrc) << shift;
+ FX_DWORD tmp2 = JBIG2_GETDWORD(lineDst);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskM) | ((tmp1 | tmp2) & maskM);
@@ -758,10 +730,11 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
lineDst += pDst->m_nStride;
}
} else {
- shift = d1 - s1;
- for (yy = yd0; yy < yd1; yy++) {
- tmp1 = JBIG2_GETDWORD(lineSrc) >> shift;
- tmp2 = JBIG2_GETDWORD(lineDst);
+ FX_DWORD shift = d1 - s1;
+ for (int32_t yy = yd0; yy < yd1; yy++) {
+ FX_DWORD tmp1 = JBIG2_GETDWORD(lineSrc) >> shift;
+ FX_DWORD tmp2 = JBIG2_GETDWORD(lineDst);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskM) | ((tmp1 | tmp2) & maskM);
@@ -788,12 +761,13 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
}
}
} else {
- shift1 = s1 - d1;
- shift2 = 32 - shift1;
- for (yy = yd0; yy < yd1; yy++) {
- tmp1 = (JBIG2_GETDWORD(lineSrc) << shift1) |
- (JBIG2_GETDWORD(lineSrc + 4) >> shift2);
- tmp2 = JBIG2_GETDWORD(lineDst);
+ FX_DWORD shift1 = s1 - d1;
+ FX_DWORD shift2 = 32 - shift1;
+ for (int32_t yy = yd0; yy < yd1; yy++) {
+ FX_DWORD tmp1 = (JBIG2_GETDWORD(lineSrc) << shift1) |
+ (JBIG2_GETDWORD(lineSrc + 4) >> shift2);
+ FX_DWORD tmp2 = JBIG2_GETDWORD(lineDst);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskM) | ((tmp1 | tmp2) & maskM);
@@ -821,16 +795,17 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
}
} else {
if (s1 > d1) {
- shift1 = s1 - d1;
- shift2 = 32 - shift1;
- middleDwords = (xd1 >> 5) - ((xd0 + 31) >> 5);
- for (yy = yd0; yy < yd1; yy++) {
- sp = lineSrc;
- dp = lineDst;
+ FX_DWORD shift1 = s1 - d1;
+ FX_DWORD shift2 = 32 - shift1;
+ int32_t middleDwords = (xd1 >> 5) - ((xd0 + 31) >> 5);
+ for (int32_t yy = yd0; yy < yd1; yy++) {
+ uint8_t* sp = lineSrc;
+ uint8_t* dp = lineDst;
if (d1 != 0) {
- tmp1 = (JBIG2_GETDWORD(sp) << shift1) |
- (JBIG2_GETDWORD(sp + 4) >> shift2);
- tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp1 = (JBIG2_GETDWORD(sp) << shift1) |
+ (JBIG2_GETDWORD(sp + 4) >> shift2);
+ FX_DWORD tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskL) | ((tmp1 | tmp2) & maskL);
@@ -855,10 +830,11 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
sp += 4;
dp += 4;
}
- for (xx = 0; xx < middleDwords; xx++) {
- tmp1 = (JBIG2_GETDWORD(sp) << shift1) |
- (JBIG2_GETDWORD(sp + 4) >> shift2);
- tmp2 = JBIG2_GETDWORD(dp);
+ for (int32_t xx = 0; xx < middleDwords; xx++) {
+ FX_DWORD tmp1 = (JBIG2_GETDWORD(sp) << shift1) |
+ (JBIG2_GETDWORD(sp + 4) >> shift2);
+ FX_DWORD tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = tmp1 | tmp2;
@@ -884,11 +860,12 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
dp += 4;
}
if (d2 != 0) {
- tmp1 =
+ FX_DWORD tmp1 =
(JBIG2_GETDWORD(sp) << shift1) |
(((sp + 4) < lineSrc + lineLeft ? JBIG2_GETDWORD(sp + 4) : 0) >>
shift2);
- tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskR) | ((tmp1 | tmp2) & maskR);
@@ -915,13 +892,14 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
lineDst += pDst->m_nStride;
}
} else if (s1 == d1) {
- middleDwords = (xd1 >> 5) - ((xd0 + 31) >> 5);
- for (yy = yd0; yy < yd1; yy++) {
- sp = lineSrc;
- dp = lineDst;
+ int32_t middleDwords = (xd1 >> 5) - ((xd0 + 31) >> 5);
+ for (int32_t yy = yd0; yy < yd1; yy++) {
+ uint8_t* sp = lineSrc;
+ uint8_t* dp = lineDst;
if (d1 != 0) {
- tmp1 = JBIG2_GETDWORD(sp);
- tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp1 = JBIG2_GETDWORD(sp);
+ FX_DWORD tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskL) | ((tmp1 | tmp2) & maskL);
@@ -946,9 +924,10 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
sp += 4;
dp += 4;
}
- for (xx = 0; xx < middleDwords; xx++) {
- tmp1 = JBIG2_GETDWORD(sp);
- tmp2 = JBIG2_GETDWORD(dp);
+ for (int32_t xx = 0; xx < middleDwords; xx++) {
+ FX_DWORD tmp1 = JBIG2_GETDWORD(sp);
+ FX_DWORD tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = tmp1 | tmp2;
@@ -974,8 +953,9 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
dp += 4;
}
if (d2 != 0) {
- tmp1 = JBIG2_GETDWORD(sp);
- tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp1 = JBIG2_GETDWORD(sp);
+ FX_DWORD tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskR) | ((tmp1 | tmp2) & maskR);
@@ -1002,15 +982,16 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
lineDst += pDst->m_nStride;
}
} else {
- shift1 = d1 - s1;
- shift2 = 32 - shift1;
- middleDwords = (xd1 >> 5) - ((xd0 + 31) >> 5);
- for (yy = yd0; yy < yd1; yy++) {
- sp = lineSrc;
- dp = lineDst;
+ FX_DWORD shift1 = d1 - s1;
+ FX_DWORD shift2 = 32 - shift1;
+ int32_t middleDwords = (xd1 >> 5) - ((xd0 + 31) >> 5);
+ for (int32_t yy = yd0; yy < yd1; yy++) {
+ uint8_t* sp = lineSrc;
+ uint8_t* dp = lineDst;
if (d1 != 0) {
- tmp1 = JBIG2_GETDWORD(sp) >> shift1;
- tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp1 = JBIG2_GETDWORD(sp) >> shift1;
+ FX_DWORD tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskL) | ((tmp1 | tmp2) & maskL);
@@ -1034,10 +1015,11 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
dp[3] = (uint8_t)tmp;
dp += 4;
}
- for (xx = 0; xx < middleDwords; xx++) {
- tmp1 = (JBIG2_GETDWORD(sp) << shift2) |
- ((JBIG2_GETDWORD(sp + 4)) >> shift1);
- tmp2 = JBIG2_GETDWORD(dp);
+ for (int32_t xx = 0; xx < middleDwords; xx++) {
+ FX_DWORD tmp1 = (JBIG2_GETDWORD(sp) << shift2) |
+ ((JBIG2_GETDWORD(sp + 4)) >> shift1);
+ FX_DWORD tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = tmp1 | tmp2;
@@ -1063,11 +1045,12 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
dp += 4;
}
if (d2 != 0) {
- tmp1 =
+ FX_DWORD tmp1 =
(JBIG2_GETDWORD(sp) << shift2) |
(((sp + 4) < lineSrc + lineLeft ? JBIG2_GETDWORD(sp + 4) : 0) >>
shift1);
- tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp2 = JBIG2_GETDWORD(dp);
+ FX_DWORD tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskR) | ((tmp1 | tmp2) & maskR);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 02:20:07 +0000