Upstream version 9.38.198.0

[platform/framework/web/crosswalk.git] / src / third_party / pdfium / core / src / fpdfapi / fpdf_render / fpdf_render_pattern.cpp

diff --git a/src/third_party/pdfium/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp b/src/third_party/pdfium/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
index 4b4f929..b54f27a 100644 (file)
--- a/src/third_party/pdfium/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
+++ b/src/third_party/pdfium/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
@@ -66,12 +66,11 @@ static void _DrawAxialShading(CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2B
                 }
             }
         }
-        FX_FLOAT R, G, B;
+        FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
         pCS->GetRGB(pResults, R, G, B);
         rgb_array[i] = FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255)));
     }
     int pitch = pBitmap->GetPitch();
-    int Bpp = pBitmap->GetBPP() / 8;
     for (int row = 0; row < height; row ++) {
         FX_DWORD* dib_buf = (FX_DWORD*)(pBitmap->GetBuffer() + row * pitch);
         for (int column = 0; column < width; column ++) {
@@ -156,7 +155,6 @@ static void _DrawRadialShading(CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2
     int width = pBitmap->GetWidth();
     int height = pBitmap->GetHeight();
     int pitch = pBitmap->GetPitch();
-    int Bpp = pBitmap->GetBPP() / 8;
     FX_BOOL bDecreasing = FALSE;
     if (start_r > end_r) {
         int length = (int)FXSYS_sqrt((FXSYS_Mul(start_x - end_x, start_x - end_x) + FXSYS_Mul(start_y - end_y, start_y - end_y)));
@@ -245,7 +243,6 @@ static void _DrawFuncShading(CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2Bi
     int width = pBitmap->GetWidth();
     int height = pBitmap->GetHeight();
     int pitch = pBitmap->GetPitch();
-    int Bpp = pBitmap->GetBPP() / 8;
     int total_results = 0;
     for (int j = 0; j < nFuncs; j ++) {
         if (pFuncs[j]) {
@@ -389,6 +386,8 @@ static void _DrawFreeGouraudShading(CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pOb
         return;
     }
     CPDF_MeshVertex triangle[3];
+    FXSYS_memset32(triangle, 0, sizeof(triangle));
+
     while (!stream.m_BitStream.IsEOF()) {
         CPDF_MeshVertex vertex;
         FX_DWORD flag = stream.GetVertex(vertex, pObject2Bitmap);
@@ -663,6 +662,32 @@ struct CPDF_PatchDrawer {
         }
     }
 };
+
+FX_BOOL _CheckCoonTensorPara(const CPDF_MeshStream &stream)
+{
+    FX_BOOL bCoorBits = ( stream.m_nCoordBits== 1   ||
+                          stream.m_nCoordBits == 2  ||
+                          stream.m_nCoordBits == 4  ||
+                          stream.m_nCoordBits == 8  ||
+                          stream.m_nCoordBits == 12 ||
+                          stream.m_nCoordBits == 16 ||
+                          stream.m_nCoordBits == 24 ||
+                          stream.m_nCoordBits == 32   );
+
+    FX_BOOL bCompBits = ( stream.m_nCompBits == 1  || 
+                          stream.m_nCompBits == 2  ||
+                          stream.m_nCompBits == 4  ||
+                          stream.m_nCompBits == 8  ||
+                          stream.m_nCompBits == 12 ||
+                          stream.m_nCompBits == 16   );
+
+    FX_BOOL bFlagBits = ( stream.m_nFlagBits == 2  ||
+                          stream.m_nFlagBits == 4  ||
+                          stream.m_nFlagBits == 8    );
+
+    return bCoorBits && bCompBits && bFlagBits; 
+}
+
 static void _DrawCoonPatchMeshes(FX_BOOL bTensor, CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2Bitmap,
                                  CPDF_Stream* pShadingStream, CPDF_Function** pFuncs, int nFuncs,
                                  CPDF_ColorSpace* pCS, int fill_mode, int alpha)
@@ -677,6 +702,11 @@ static void _DrawCoonPatchMeshes(FX_BOOL bTensor, CFX_DIBitmap* pBitmap, CFX_Aff
     if (!stream.Load(pShadingStream, pFuncs, nFuncs, pCS)) {
         return;
     }
+
+    if (!_CheckCoonTensorPara(stream)) {
+        return;
+    }
+ 
     CPDF_PatchDrawer patch;
     patch.alpha = alpha;
     patch.pDevice = &device;
@@ -688,15 +718,19 @@ static void _DrawCoonPatchMeshes(FX_BOOL bTensor, CFX_DIBitmap* pBitmap, CFX_Aff
         pPoints[i].m_Flag = FXPT_BEZIERTO;
     }
     CFX_FloatPoint coords[16];
+    for (int i = 0; i < 16; i ++) {
+        coords[i].Set(0.0f, 0.0f);
+    }
+
     int point_count = bTensor ? 16 : 12;
     while (!stream.m_BitStream.IsEOF()) {
         FX_DWORD flag = stream.GetFlag();
-        int iStartPoint = 0, iStartColor = 0, i;
+        int iStartPoint = 0, iStartColor = 0, i = 0;
         if (flag) {
             iStartPoint = 4;
             iStartColor = 2;
             CFX_FloatPoint tempCoords[4];
-            for (int i = 0; i < 4; i ++) {
+            for (i = 0; i < 4; i ++) {
                 tempCoords[i] = coords[(flag * 3 + i) % 12];
             }
             FXSYS_memcpy32(coords, tempCoords, sizeof(CFX_FloatPoint) * 4);
@@ -710,7 +744,7 @@ static void _DrawCoonPatchMeshes(FX_BOOL bTensor, CFX_DIBitmap* pBitmap, CFX_Aff
             pObject2Bitmap->Transform(coords[i].x, coords[i].y);
         }
         for (i = iStartColor; i < 4; i ++) {
-            FX_FLOAT r, g, b;
+            FX_FLOAT r=0.0f, g=0.0f, b=0.0f;
             stream.GetColor(r, g, b);
             patch.patch_colors[i].comp[0] = (FX_INT32)(r * 255);
             patch.patch_colors[i].comp[1] = (FX_INT32)(g * 255);
@@ -736,8 +770,6 @@ static void _DrawCoonPatchMeshes(FX_BOOL bTensor, CFX_DIBitmap* pBitmap, CFX_Aff
 void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern, CFX_AffineMatrix* pMatrix,
                                     FX_RECT& clip_rect, int alpha, FX_BOOL bAlphaMode)
 {
-    int width = clip_rect.Width();
-    int height = clip_rect.Height();
     CPDF_Function** pFuncs = pPattern->m_pFunctions;
     int nFuncs = pPattern->m_nFuncs;
     CPDF_Dictionary* pDict = pPattern->m_pShadingObj->GetDict();
@@ -753,7 +785,7 @@ void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern, CFX_AffineMat
             for (int i = 0; i < pColorSpace->CountComponents(); i ++) {
                 comps[i] = pBackColor->GetNumber(i);
             }
-            FX_FLOAT R, G, B;
+            FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
             pColorSpace->GetRGB(comps, R, G, B);
             background = ArgbEncode(255, (FX_INT32)(R * 255), (FX_INT32)(G * 255), (FX_INT32)(B * 255));
         }