Clean up CLcmsCmm.

Make members const and private. Fix nits.

Change-Id: I945bc26438f8fbd6904dc1b15513ab9e51170dc7
Reviewed-on: https://pdfium-review.googlesource.com/36631
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>

3 files changed, 24 insertions, 18 deletions

diff --git a/core/fpdfapi/page/cpdf_colorspace.cpp b/core/fpdfapi/page/cpdf_colorspace.cpp
index b78fe9acfc..0138b81ca1 100644
--- a/core/fpdfapi/page/cpdf_colorspace.cpp
+++ b/core/fpdfapi/page/cpdf_colorspace.cpp
@@ -1019,7 +1019,7 @@ bool CPDF_ICCBasedCS::IsNormal() const {
   if (m_pProfile->IsSRGB())
     return true;
   if (m_pProfile->transform())
-    return m_pProfile->transform()->m_bNormal;
+    return m_pProfile->transform()->IsNormal();
   if (m_pAlterCS)
     return m_pAlterCS->IsNormal();
   return false;
diff --git a/core/fxcodec/codec/ccodec_iccmodule.h b/core/fxcodec/codec/ccodec_iccmodule.h
index 0d60c3fd4a..38d9ec8686 100644
--- a/core/fxcodec/codec/ccodec_iccmodule.h
+++ b/core/fxcodec/codec/ccodec_iccmodule.h
@@ -22,15 +22,21 @@
 
 class CLcmsCmm {
  public:
-  CLcmsCmm(int srcComponents,
-           cmsHTRANSFORM transform,
-           bool isLab,
+  CLcmsCmm(cmsHTRANSFORM transform,
+           int srcComponents,
+           bool bIsLab,
            bool bNormal);
   ~CLcmsCmm();
 
-  cmsHTRANSFORM m_hTransform;
-  int m_nSrcComponents;
-  bool m_bLab;
+  cmsHTRANSFORM transform() const { return m_hTransform; }
+  int components() const { return m_nSrcComponents; }
+  bool IsLab() const { return m_bLab; }
+  bool IsNormal() const { return m_bNormal; }
+
+ private:
+  const cmsHTRANSFORM m_hTransform;
+  const int m_nSrcComponents;
+  const bool m_bLab;
   const bool m_bNormal;
 };
 
@@ -52,7 +58,7 @@ class CCodec_IccModule {
   void SetComponents(uint32_t nComponents) { m_nComponents = nComponents; }
 
  protected:
-  uint32_t m_nComponents;
+  uint32_t m_nComponents = 0;
 };
 
 #endif  // CORE_FXCODEC_CODEC_CCODEC_ICCMODULE_H_
diff --git a/core/fxcodec/codec/fx_codec_icc.cpp b/core/fxcodec/codec/fx_codec_icc.cpp
index 60768f63bf..a7c7f98bba 100644
--- a/core/fxcodec/codec/fx_codec_icc.cpp
+++ b/core/fxcodec/codec/fx_codec_icc.cpp
@@ -25,20 +25,20 @@ bool Check3Components(cmsColorSpaceSignature cs) {
 
 }  // namespace
 
-CLcmsCmm::CLcmsCmm(int srcComponents,
-                   cmsHTRANSFORM hTransform,
-                   bool isLab,
+CLcmsCmm::CLcmsCmm(cmsHTRANSFORM hTransform,
+                   int srcComponents,
+                   bool bIsLab,
                    bool bNormal)
     : m_hTransform(hTransform),
       m_nSrcComponents(srcComponents),
-      m_bLab(isLab),
+      m_bLab(bIsLab),
       m_bNormal(bNormal) {}
 
 CLcmsCmm::~CLcmsCmm() {
   cmsDeleteTransform(m_hTransform);
 }
 
-CCodec_IccModule::CCodec_IccModule() : m_nComponents(0) {}
+CCodec_IccModule::CCodec_IccModule() {}
 
 CCodec_IccModule::~CCodec_IccModule() {}
 
@@ -111,7 +111,7 @@ std::unique_ptr<CLcmsCmm> CCodec_IccModule::CreateTransform_sRGB(
     return nullptr;
   }
   auto pCmm =
-      pdfium::MakeUnique<CLcmsCmm>(*nSrcComponents, hTransform, bLab, bNormal);
+      pdfium::MakeUnique<CLcmsCmm>(hTransform, *nSrcComponents, bLab, bNormal);
   cmsCloseProfile(srcProfile);
   cmsCloseProfile(dstProfile);
   return pCmm;
@@ -128,18 +128,18 @@ void CCodec_IccModule::Translate(CLcmsCmm* pTransform,
   // TODO(npm): Currently the CmsDoTransform method is part of LCMS and it will
   // apply some member of m_hTransform to the input. We need to go over all the
   // places which set transform to verify that only nSrcComponents are used.
-  if (pTransform->m_bLab) {
+  if (pTransform->IsLab()) {
     std::vector<double> inputs(std::max(nSrcComponents, 16u));
     for (uint32_t i = 0; i < nSrcComponents; ++i)
       inputs[i] = pSrcValues[i];
-    cmsDoTransform(pTransform->m_hTransform, inputs.data(), output, 1);
+    cmsDoTransform(pTransform->transform(), inputs.data(), output, 1);
   } else {
     std::vector<uint8_t> inputs(std::max(nSrcComponents, 16u));
     for (uint32_t i = 0; i < nSrcComponents; ++i) {
       inputs[i] =
           pdfium::clamp(static_cast<int>(pSrcValues[i] * 255.0f), 0, 255);
     }
-    cmsDoTransform(pTransform->m_hTransform, inputs.data(), output, 1);
+    cmsDoTransform(pTransform->transform(), inputs.data(), output, 1);
   }
   pDestValues[0] = output[2] / 255.0f;
   pDestValues[1] = output[1] / 255.0f;
@@ -151,5 +151,5 @@ void CCodec_IccModule::TranslateScanline(CLcmsCmm* pTransform,
                                          const unsigned char* pSrc,
                                          int32_t pixels) {
   if (pTransform)
-    cmsDoTransform(pTransform->m_hTransform, pSrc, pDest, pixels);
+    cmsDoTransform(pTransform->transform(), pSrc, pDest, pixels);
 }