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-rw-r--r--core/fxcodec/jbig2/JBig2_Image.cpp184
1 files changed, 94 insertions, 90 deletions
diff --git a/core/fxcodec/jbig2/JBig2_Image.cpp b/core/fxcodec/jbig2/JBig2_Image.cpp
index a8d28ace77..13323bac30 100644
--- a/core/fxcodec/jbig2/JBig2_Image.cpp
+++ b/core/fxcodec/jbig2/JBig2_Image.cpp
@@ -4,10 +4,13 @@
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+#include "core/fxcodec/jbig2/JBig2_Image.h"
+
#include <limits.h>
+
+#include <algorithm>
#include <memory>
-#include "core/fxcodec/jbig2/JBig2_Image.h"
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_memory.h"
#include "core/fxcrt/fx_safe_types.h"
@@ -248,63 +251,52 @@ bool CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
int32_t x,
int32_t y,
JBig2ComposeOp op) {
- int32_t xs0 = 0, ys0 = 0, xs1 = 0, ys1 = 0, xd0 = 0, yd0 = 0, xd1 = 0,
- yd1 = 0, xx = 0, yy = 0, w = 0, h = 0, middleDwords = 0, lineLeft = 0;
-
- uint32_t s1 = 0, d1 = 0, d2 = 0, shift = 0, shift1 = 0, shift2 = 0, tmp = 0,
- tmp1 = 0, tmp2 = 0, maskL = 0, maskR = 0, maskM = 0;
-
if (!m_pData)
return false;
if (x < -1048576 || x > 1048576 || y < -1048576 || y > 1048576)
return false;
- if (y < 0) {
- ys0 = -y;
- }
- if (y + m_nHeight > pDst->m_nHeight) {
- ys1 = pDst->m_nHeight - y;
- } else {
- ys1 = m_nHeight;
- }
- if (x < 0) {
- xs0 = -x;
- }
- if (x + m_nWidth > pDst->m_nWidth) {
+ int32_t xs0 = x < 0 ? -x : 0;
+ int32_t xs1;
+ if (x + m_nWidth > pDst->m_nWidth)
xs1 = pDst->m_nWidth - x;
- } else {
+ else
xs1 = m_nWidth;
- }
- if ((ys0 >= ys1) || (xs0 >= xs1)) {
- return 0;
- }
- w = xs1 - xs0;
- h = ys1 - ys0;
- if (y >= 0) {
- yd0 = y;
- }
- if (x >= 0) {
- 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;
+
+ int32_t ys0 = y < 0 ? -y : 0;
+ int32_t ys1;
+ if (y + m_nHeight > pDst->m_nHeight)
+ ys1 = pDst->m_nHeight - y;
+ else
+ ys1 = m_nHeight;
+
+ if (ys0 >= ys1 || xs0 >= xs1)
+ return false;
+
+ int32_t xd0 = std::max(x, 0);
+ int32_t yd0 = std::max(y, 0);
+ int32_t w = xs1 - xs0;
+ int32_t h = ys1 - ys0;
+ int32_t xd1 = xd0 + w;
+ int32_t yd1 = yd0 + h;
+ uint32_t d1 = xd0 & 31;
+ uint32_t d2 = xd1 & 31;
+ uint32_t s1 = xs0 & 31;
+ uint32_t maskL = 0xffffffff >> d1;
+ uint32_t maskR = 0xffffffff << ((32 - (xd1 & 31)) % 32);
+ uint32_t maskM = maskL & maskR;
uint8_t* lineSrc = data() + ys0 * m_nStride + ((xs0 >> 5) << 2);
- lineLeft = m_nStride - ((xs0 >> 5) << 2);
+ int32_t lineLeft = m_nStride - ((xs0 >> 5) << 2);
uint8_t* lineDst = pDst->data() + 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);
+ uint32_t shift = s1 - d1;
+ for (int32_t yy = yd0; yy < yd1; yy++) {
+ uint32_t tmp1 = JBIG2_GETDWORD(lineSrc) << shift;
+ uint32_t tmp2 = JBIG2_GETDWORD(lineDst);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskM) | ((tmp1 | tmp2) & maskM);
@@ -330,10 +322,11 @@ 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);
+ uint32_t shift = d1 - s1;
+ for (int32_t yy = yd0; yy < yd1; yy++) {
+ uint32_t tmp1 = JBIG2_GETDWORD(lineSrc) >> shift;
+ uint32_t tmp2 = JBIG2_GETDWORD(lineDst);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskM) | ((tmp1 | tmp2) & maskM);
@@ -360,12 +353,13 @@ 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);
+ uint32_t shift1 = s1 - d1;
+ uint32_t shift2 = 32 - shift1;
+ for (int32_t yy = yd0; yy < yd1; yy++) {
+ uint32_t tmp1 = (JBIG2_GETDWORD(lineSrc) << shift1) |
+ (JBIG2_GETDWORD(lineSrc + 4) >> shift2);
+ uint32_t tmp2 = JBIG2_GETDWORD(lineDst);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskM) | ((tmp1 | tmp2) & maskM);
@@ -396,16 +390,17 @@ bool CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
uint8_t* dp = nullptr;
if (s1 > d1) {
- shift1 = s1 - d1;
- shift2 = 32 - shift1;
- middleDwords = (xd1 >> 5) - ((xd0 + 31) >> 5);
- for (yy = yd0; yy < yd1; yy++) {
+ uint32_t shift1 = s1 - d1;
+ uint32_t shift2 = 32 - shift1;
+ int32_t middleDwords = (xd1 >> 5) - ((xd0 + 31) >> 5);
+ for (int32_t yy = yd0; yy < yd1; yy++) {
sp = lineSrc;
dp = lineDst;
if (d1 != 0) {
- tmp1 = (JBIG2_GETDWORD(sp) << shift1) |
- (JBIG2_GETDWORD(sp + 4) >> shift2);
- tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp1 = (JBIG2_GETDWORD(sp) << shift1) |
+ (JBIG2_GETDWORD(sp + 4) >> shift2);
+ uint32_t tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskL) | ((tmp1 | tmp2) & maskL);
@@ -430,10 +425,11 @@ 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++) {
+ uint32_t tmp1 = (JBIG2_GETDWORD(sp) << shift1) |
+ (JBIG2_GETDWORD(sp + 4) >> shift2);
+ uint32_t tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = tmp1 | tmp2;
@@ -459,11 +455,12 @@ bool CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
dp += 4;
}
if (d2 != 0) {
- tmp1 =
+ uint32_t tmp1 =
(JBIG2_GETDWORD(sp) << shift1) |
(((sp + 4) < lineSrc + lineLeft ? JBIG2_GETDWORD(sp + 4) : 0) >>
shift2);
- tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskR) | ((tmp1 | tmp2) & maskR);
@@ -490,13 +487,14 @@ 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++) {
+ int32_t middleDwords = (xd1 >> 5) - ((xd0 + 31) >> 5);
+ for (int32_t yy = yd0; yy < yd1; yy++) {
sp = lineSrc;
dp = lineDst;
if (d1 != 0) {
- tmp1 = JBIG2_GETDWORD(sp);
- tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp1 = JBIG2_GETDWORD(sp);
+ uint32_t tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskL) | ((tmp1 | tmp2) & maskL);
@@ -521,9 +519,10 @@ 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++) {
+ uint32_t tmp1 = JBIG2_GETDWORD(sp);
+ uint32_t tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = tmp1 | tmp2;
@@ -549,8 +548,9 @@ bool CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
dp += 4;
}
if (d2 != 0) {
- tmp1 = JBIG2_GETDWORD(sp);
- tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp1 = JBIG2_GETDWORD(sp);
+ uint32_t tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskR) | ((tmp1 | tmp2) & maskR);
@@ -577,15 +577,16 @@ 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++) {
+ uint32_t shift1 = d1 - s1;
+ uint32_t shift2 = 32 - shift1;
+ int32_t middleDwords = (xd1 >> 5) - ((xd0 + 31) >> 5);
+ for (int32_t yy = yd0; yy < yd1; yy++) {
sp = lineSrc;
dp = lineDst;
if (d1 != 0) {
- tmp1 = JBIG2_GETDWORD(sp) >> shift1;
- tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp1 = JBIG2_GETDWORD(sp) >> shift1;
+ uint32_t tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskL) | ((tmp1 | tmp2) & maskL);
@@ -609,10 +610,11 @@ 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++) {
+ uint32_t tmp1 = (JBIG2_GETDWORD(sp) << shift2) |
+ ((JBIG2_GETDWORD(sp + 4)) >> shift1);
+ uint32_t tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = tmp1 | tmp2;
@@ -638,11 +640,12 @@ bool CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
dp += 4;
}
if (d2 != 0) {
- tmp1 =
+ uint32_t tmp1 =
(JBIG2_GETDWORD(sp) << shift2) |
(((sp + 4) < lineSrc + lineLeft ? JBIG2_GETDWORD(sp + 4) : 0) >>
shift1);
- tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp2 = JBIG2_GETDWORD(dp);
+ uint32_t tmp = 0;
switch (op) {
case JBIG2_COMPOSE_OR:
tmp = (tmp2 & ~maskR) | ((tmp1 | tmp2) & maskR);
@@ -670,8 +673,9 @@ bool CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
}
}
}
- return 1;
+ return true;
}
+
bool CJBig2_Image::composeTo_opt2(CJBig2_Image* pDst,
int32_t x,
int32_t y,
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 09:03:32 +0000