Break apart the pageint.h file.

This CL separates pageint.h and the supporting cpp files into indivudal
class files.

Change-Id: Idcadce41976a8cd5f0d916e6a5ebbc283fd36527
Reviewed-on: https://pdfium-review.googlesource.com/5930
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>

1 files changed, 215 insertions, 0 deletions

diff --git a/core/fpdfapi/page/cpdf_devicecs.cpp b/core/fpdfapi/page/cpdf_devicecs.cpp
new file mode 100644
index 0000000000..d410b1fb4a
--- /dev/null
+++ b/core/fpdfapi/page/cpdf_devicecs.cpp
@@ -0,0 +1,215 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "core/fpdfapi/page/cpdf_devicecs.h"
+
+#include <limits.h>
+
+#include <algorithm>
+
+#include "core/fpdfapi/cpdf_modulemgr.h"
+#include "core/fpdfapi/parser/cpdf_array.h"
+#include "core/fpdfapi/parser/cpdf_dictionary.h"
+#include "core/fpdfapi/parser/cpdf_document.h"
+#include "core/fpdfapi/parser/cpdf_stream_acc.h"
+#include "core/fpdfapi/parser/cpdf_string.h"
+#include "core/fxcodec/fx_codec.h"
+#include "third_party/base/logging.h"
+#include "third_party/base/stl_util.h"
+
+namespace {
+
+float NormalizeChannel(float fVal) {
+  return pdfium::clamp(fVal, 0.0f, 1.0f);
+}
+
+}  // namespace
+
+uint32_t ComponentsForFamily(int family) {
+  if (family == PDFCS_DEVICERGB)
+    return 3;
+  if (family == PDFCS_DEVICEGRAY)
+    return 1;
+  ASSERT(family == PDFCS_DEVICECMYK);
+  return 4;
+}
+
+void sRGB_to_AdobeCMYK(float R,
+                       float G,
+                       float B,
+                       float& c,
+                       float& m,
+                       float& y,
+                       float& k) {
+  c = 1.0f - R;
+  m = 1.0f - G;
+  y = 1.0f - B;
+  k = std::min(c, std::min(m, y));
+}
+
+void ReverseRGB(uint8_t* pDestBuf, const uint8_t* pSrcBuf, int pixels) {
+  if (pDestBuf == pSrcBuf) {
+    for (int i = 0; i < pixels; i++) {
+      uint8_t temp = pDestBuf[2];
+      pDestBuf[2] = pDestBuf[0];
+      pDestBuf[0] = temp;
+      pDestBuf += 3;
+    }
+  } else {
+    for (int i = 0; i < pixels; i++) {
+      *pDestBuf++ = pSrcBuf[2];
+      *pDestBuf++ = pSrcBuf[1];
+      *pDestBuf++ = pSrcBuf[0];
+      pSrcBuf += 3;
+    }
+  }
+}
+
+CPDF_DeviceCS::CPDF_DeviceCS(int family)
+    : CPDF_ColorSpace(nullptr, family, ComponentsForFamily(family)) {
+  ASSERT(family == PDFCS_DEVICEGRAY || family == PDFCS_DEVICERGB ||
+         family == PDFCS_DEVICECMYK);
+}
+
+CPDF_DeviceCS::~CPDF_DeviceCS() {}
+
+bool CPDF_DeviceCS::GetRGB(float* pBuf, float* R, float* G, float* B) const {
+  switch (m_Family) {
+    case PDFCS_DEVICEGRAY:
+      *R = NormalizeChannel(*pBuf);
+      *G = *R;
+      *B = *R;
+      return true;
+    case PDFCS_DEVICERGB:
+      *R = NormalizeChannel(pBuf[0]);
+      *G = NormalizeChannel(pBuf[1]);
+      *B = NormalizeChannel(pBuf[2]);
+      return true;
+    case PDFCS_DEVICECMYK:
+      if (m_dwStdConversion) {
+        float k = pBuf[3];
+        *R = 1.0f - std::min(1.0f, pBuf[0] + k);
+        *G = 1.0f - std::min(1.0f, pBuf[1] + k);
+        *B = 1.0f - std::min(1.0f, pBuf[2] + k);
+      } else {
+        AdobeCMYK_to_sRGB(NormalizeChannel(pBuf[0]), NormalizeChannel(pBuf[1]),
+                          NormalizeChannel(pBuf[2]), NormalizeChannel(pBuf[3]),
+                          *R, *G, *B);
+      }
+      return true;
+    default:
+      NOTREACHED();
+      return false;
+  }
+}
+
+bool CPDF_DeviceCS::v_GetCMYK(float* pBuf,
+                              float* c,
+                              float* m,
+                              float* y,
+                              float* k) const {
+  if (m_Family != PDFCS_DEVICECMYK)
+    return false;
+
+  *c = pBuf[0];
+  *m = pBuf[1];
+  *y = pBuf[2];
+  *k = pBuf[3];
+  return true;
+}
+
+bool CPDF_DeviceCS::SetRGB(float* pBuf, float R, float G, float B) const {
+  switch (m_Family) {
+    case PDFCS_DEVICEGRAY:
+      if (R != G || R != B)
+        return false;
+      *pBuf = R;
+      return true;
+    case PDFCS_DEVICERGB:
+      pBuf[0] = R;
+      pBuf[1] = G;
+      pBuf[2] = B;
+      return true;
+    case PDFCS_DEVICECMYK:
+      sRGB_to_AdobeCMYK(R, G, B, pBuf[0], pBuf[1], pBuf[2], pBuf[3]);
+      return true;
+    default:
+      NOTREACHED();
+      return false;
+  }
+}
+
+bool CPDF_DeviceCS::v_SetCMYK(float* pBuf,
+                              float c,
+                              float m,
+                              float y,
+                              float k) const {
+  switch (m_Family) {
+    case PDFCS_DEVICEGRAY:
+      return false;
+    case PDFCS_DEVICERGB:
+      AdobeCMYK_to_sRGB(c, m, y, k, pBuf[0], pBuf[1], pBuf[2]);
+      return true;
+    case PDFCS_DEVICECMYK:
+      pBuf[0] = c;
+      pBuf[1] = m;
+      pBuf[2] = y;
+      pBuf[3] = k;
+      return true;
+    default:
+      NOTREACHED();
+      return false;
+  }
+}
+
+void CPDF_DeviceCS::TranslateImageLine(uint8_t* pDestBuf,
+                                       const uint8_t* pSrcBuf,
+                                       int pixels,
+                                       int image_width,
+                                       int image_height,
+                                       bool bTransMask) const {
+  switch (m_Family) {
+    case PDFCS_DEVICEGRAY:
+      for (int i = 0; i < pixels; i++) {
+        *pDestBuf++ = pSrcBuf[i];
+        *pDestBuf++ = pSrcBuf[i];
+        *pDestBuf++ = pSrcBuf[i];
+      }
+      break;
+    case PDFCS_DEVICERGB:
+      ReverseRGB(pDestBuf, pSrcBuf, pixels);
+      break;
+    case PDFCS_DEVICECMYK:
+      if (bTransMask) {
+        for (int i = 0; i < pixels; i++) {
+          int k = 255 - pSrcBuf[3];
+          pDestBuf[0] = ((255 - pSrcBuf[0]) * k) / 255;
+          pDestBuf[1] = ((255 - pSrcBuf[1]) * k) / 255;
+          pDestBuf[2] = ((255 - pSrcBuf[2]) * k) / 255;
+          pDestBuf += 3;
+          pSrcBuf += 4;
+        }
+      } else {
+        for (int i = 0; i < pixels; i++) {
+          if (m_dwStdConversion) {
+            uint8_t k = pSrcBuf[3];
+            pDestBuf[2] = 255 - std::min(255, pSrcBuf[0] + k);
+            pDestBuf[1] = 255 - std::min(255, pSrcBuf[1] + k);
+            pDestBuf[0] = 255 - std::min(255, pSrcBuf[2] + k);
+          } else {
+            AdobeCMYK_to_sRGB1(pSrcBuf[0], pSrcBuf[1], pSrcBuf[2], pSrcBuf[3],
+                               pDestBuf[2], pDestBuf[1], pDestBuf[0]);
+          }
+          pSrcBuf += 4;
+          pDestBuf += 3;
+        }
+      }
+      break;
+    default:
+      NOTREACHED();
+      break;
+  }
+}